metag: Remove arch/metag/

The earliest Meta architecture port of Linux I have a record of was an
import of a Meta port of Linux v2.4.1 in February 2004, which was worked
on significantly over the next few years by Graham Whaley, Will Newton,
Matt Fleming, myself and others.

Eventually the port was merged into mainline in v3.9 in March 2013, not
long after Imagination Technologies bought MIPS Technologies and shifted
its CPU focus over to the MIPS architecture.

As a result, though the port was maintained for a while, kept on life
support for a while longer, and useful for testing a few specific
drivers for which I don't have ready access to the equivalent MIPS
hardware, it is now essentially dead with no users.

It is also stuck using an out-of-tree toolchain based on GCC 4.2.4 which
is no longer maintained, now struggles to build modern kernels due to
toolchain bugs, and doesn't itself build with a modern GCC. The latest
buildroot port is still using an old uClibc snapshot which is no longer
served, and the latest uClibc doesn't build with GCC 4.2.4.

So lets call it a day and drop the Meta architecture port from the
kernel. RIP Meta.

Signed-off-by: James Hogan <jhogan@kernel.org>
Link: https://lkml.kernel.org/r/95906b76-6ce1-3f84-eaba-c29b4ae952eb@roeck-us.net
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Graham Whaley <graham.whaley@gmail.com>
Cc: linux-metag@vger.kernel.org

35 files changed, 0 insertions, 7495 deletions

diff --git a/arch/metag/kernel/.gitignore b/arch/metag/kernel/.gitignore
deleted file mode 100644
index c5f676c3c224..000000000000
--- a/arch/metag/kernel/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-vmlinux.lds
diff --git a/arch/metag/kernel/Makefile b/arch/metag/kernel/Makefile
deleted file mode 100644
index 73441d8c0369..000000000000
--- a/arch/metag/kernel/Makefile
+++ /dev/null
@@ -1,40 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-#
-# Makefile for the Linux/Meta kernel.
-#
-
-extra-y	+= head.o
-extra-y	+= vmlinux.lds
-
-obj-y	+= cachepart.o
-obj-y	+= clock.o
-obj-y	+= core_reg.o
-obj-y	+= devtree.o
-obj-y	+= dma.o
-obj-y	+= irq.o
-obj-y	+= kick.o
-obj-y	+= machines.o
-obj-y	+= process.o
-obj-y	+= ptrace.o
-obj-y	+= setup.o
-obj-y	+= signal.o
-obj-y	+= stacktrace.o
-obj-y	+= sys_metag.o
-obj-y	+= tbiunexp.o
-obj-y	+= time.o
-obj-y	+= topology.o
-obj-y	+= traps.o
-obj-y	+= user_gateway.o
-
-obj-$(CONFIG_PERF_EVENTS)		+= perf/
-
-obj-$(CONFIG_METAG_COREMEM)		+= coremem.o
-obj-$(CONFIG_METAG_DA)			+= da.o
-obj-$(CONFIG_DYNAMIC_FTRACE)		+= ftrace.o
-obj-$(CONFIG_FUNCTION_TRACER)		+= ftrace_stub.o
-obj-$(CONFIG_MODULES)			+= metag_ksyms.o
-obj-$(CONFIG_MODULES)			+= module.o
-obj-$(CONFIG_PERF_EVENTS)		+= perf_callchain.o
-obj-$(CONFIG_SMP)			+= smp.o
-obj-$(CONFIG_METAG_SUSPEND_MEM)		+= suspend.o
-obj-$(CONFIG_METAG_USER_TCM)		+= tcm.o
diff --git a/arch/metag/kernel/asm-offsets.c b/arch/metag/kernel/asm-offsets.c
deleted file mode 100644
index d9b348b99ff2..000000000000
--- a/arch/metag/kernel/asm-offsets.c
+++ /dev/null
@@ -1,15 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * This program is used to generate definitions needed by
- * assembly language modules.
- *
- */
-
-#include <linux/kbuild.h>
-#include <linux/thread_info.h>
-
-int main(void)
-{
-	DEFINE(THREAD_INFO_SIZE, sizeof(struct thread_info));
-	return 0;
-}
diff --git a/arch/metag/kernel/cachepart.c b/arch/metag/kernel/cachepart.c
deleted file mode 100644
index 6e0f8a80cc96..000000000000
--- a/arch/metag/kernel/cachepart.c
+++ /dev/null
@@ -1,132 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Meta cache partition manipulation.
- *
- * Copyright 2010 Imagination Technologies Ltd.
- */
-
-#include <linux/kernel.h>
-#include <linux/io.h>
-#include <linux/errno.h>
-#include <asm/processor.h>
-#include <asm/cachepart.h>
-#include <asm/metag_isa.h>
-#include <asm/metag_mem.h>
-
-#define SYSC_DCPART(n)	(SYSC_DCPART0 + SYSC_xCPARTn_STRIDE * (n))
-#define SYSC_ICPART(n)	(SYSC_ICPART0 + SYSC_xCPARTn_STRIDE * (n))
-
-#define CACHE_ASSOCIATIVITY 4 /* 4 way set-associative */
-#define ICACHE 0
-#define DCACHE 1
-
-/* The CORE_CONFIG2 register is not available on Meta 1 */
-#ifdef CONFIG_METAG_META21
-unsigned int get_dcache_size(void)
-{
-	unsigned int config2 = metag_in32(METAC_CORE_CONFIG2);
-	unsigned int sz = 0x1000 << ((config2 & METAC_CORECFG2_DCSZ_BITS)
-				     >> METAC_CORECFG2_DCSZ_S);
-	if (config2 & METAC_CORECFG2_DCSMALL_BIT)
-		sz >>= 6;
-	return sz;
-}
-
-unsigned int get_icache_size(void)
-{
-	unsigned int config2 = metag_in32(METAC_CORE_CONFIG2);
-	unsigned int sz = 0x1000 << ((config2 & METAC_CORE_C2ICSZ_BITS)
-				     >> METAC_CORE_C2ICSZ_S);
-	if (config2 & METAC_CORECFG2_ICSMALL_BIT)
-		sz >>= 6;
-	return sz;
-}
-
-unsigned int get_global_dcache_size(void)
-{
-	unsigned int cpart = metag_in32(SYSC_DCPART(hard_processor_id()));
-	unsigned int temp = cpart & SYSC_xCPARTG_AND_BITS;
-	return (get_dcache_size() * ((temp >> SYSC_xCPARTG_AND_S) + 1)) >> 4;
-}
-
-unsigned int get_global_icache_size(void)
-{
-	unsigned int cpart = metag_in32(SYSC_ICPART(hard_processor_id()));
-	unsigned int temp = cpart & SYSC_xCPARTG_AND_BITS;
-	return (get_icache_size() * ((temp >> SYSC_xCPARTG_AND_S) + 1)) >> 4;
-}
-
-static int get_thread_cache_size(unsigned int cache, int thread_id)
-{
-	unsigned int cache_size;
-	unsigned int t_cache_part;
-	unsigned int isEnabled;
-	unsigned int offset = 0;
-	isEnabled = (cache == DCACHE ? metag_in32(MMCU_DCACHE_CTRL_ADDR) & 0x1 :
-		metag_in32(MMCU_ICACHE_CTRL_ADDR) & 0x1);
-	if (!isEnabled)
-		return 0;
-#if PAGE_OFFSET >= LINGLOBAL_BASE
-	/* Checking for global cache */
-	cache_size = (cache == DCACHE ? get_global_dcache_size() :
-		get_global_icache_size());
-	offset = 8;
-#else
-	cache_size = (cache == DCACHE ? get_dcache_size() :
-		get_icache_size());
-#endif
-	t_cache_part = (cache == DCACHE ?
-		(metag_in32(SYSC_DCPART(thread_id)) >> offset) & 0xF :
-		(metag_in32(SYSC_ICPART(thread_id)) >> offset) & 0xF);
-	switch (t_cache_part) {
-	case 0xF:
-		return cache_size;
-	case 0x7:
-		return cache_size / 2;
-	case 0x3:
-		return cache_size / 4;
-	case 0x1:
-		return cache_size / 8;
-	case 0:
-		return cache_size / 16;
-	}
-	return -1;
-}
-
-void check_for_cache_aliasing(int thread_id)
-{
-	int thread_cache_size;
-	unsigned int cache_type;
-	for (cache_type = ICACHE; cache_type <= DCACHE; cache_type++) {
-		thread_cache_size =
-				get_thread_cache_size(cache_type, thread_id);
-		if (thread_cache_size < 0)
-			pr_emerg("Can't read %s cache size\n",
-				 cache_type ? "DCACHE" : "ICACHE");
-		else if (thread_cache_size == 0)
-			/* Cache is off. No need to check for aliasing */
-			continue;
-		if (thread_cache_size / CACHE_ASSOCIATIVITY > PAGE_SIZE) {
-			pr_emerg("Potential cache aliasing detected in %s on Thread %d\n",
-				 cache_type ? "DCACHE" : "ICACHE", thread_id);
-			pr_warn("Total %s size: %u bytes\n",
-				cache_type ? "DCACHE" : "ICACHE",
-				cache_type ? get_dcache_size()
-				: get_icache_size());
-			pr_warn("Thread %s size: %d bytes\n",
-				cache_type ? "CACHE" : "ICACHE",
-				thread_cache_size);
-			pr_warn("Page Size: %lu bytes\n", PAGE_SIZE);
-			panic("Potential cache aliasing detected");
-		}
-	}
-}
-
-#else
-
-void check_for_cache_aliasing(int thread_id)
-{
-	return;
-}
-
-#endif
diff --git a/arch/metag/kernel/clock.c b/arch/metag/kernel/clock.c
deleted file mode 100644
index 6339c9c6d0ab..000000000000
--- a/arch/metag/kernel/clock.c
+++ /dev/null
@@ -1,110 +0,0 @@
-/*
- * arch/metag/kernel/clock.c
- *
- * Copyright (C) 2012 Imagination Technologies Ltd.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/clk.h>
-#include <linux/delay.h>
-#include <linux/io.h>
-#include <linux/of.h>
-
-#include <asm/param.h>
-#include <asm/clock.h>
-
-struct meta_clock_desc _meta_clock;
-
-/* Default machine get_core_freq callback. */
-static unsigned long get_core_freq_default(void)
-{
-#ifdef CONFIG_METAG_META21
-	/*
-	 * Meta 2 cores divide down the core clock for the Meta timers, so we
-	 * can estimate the core clock from the divider.
-	 */
-	return (metag_in32(EXPAND_TIMER_DIV) + 1) * 1000000;
-#else
-	/*
-	 * On Meta 1 we don't know the core clock, but assuming the Meta timer
-	 * is correct it can be estimated based on loops_per_jiffy.
-	 */
-	return (loops_per_jiffy * HZ * 5) >> 1;
-#endif
-}
-
-static struct clk *clk_core;
-
-/* Clk based get_core_freq callback. */
-static unsigned long get_core_freq_clk(void)
-{
-	return clk_get_rate(clk_core);
-}
-
-/**
- * init_metag_core_clock() - Set up core clock from devicetree.
- *
- * Checks to see if a "core" clock is provided in the device tree, and overrides
- * the get_core_freq callback to use it.
- */
-static void __init init_metag_core_clock(void)
-{
-	/*
-	 * See if a core clock is provided by the devicetree (and
-	 * registered by the init callback above).
-	 */
-	struct device_node *node;
-	node = of_find_compatible_node(NULL, NULL, "img,meta");
-	if (!node) {
-		pr_warn("%s: no compatible img,meta DT node found\n",
-			__func__);
-		return;
-	}
-
-	clk_core = of_clk_get_by_name(node, "core");
-	if (IS_ERR(clk_core)) {
-		pr_warn("%s: no core clock found in DT\n",
-			__func__);
-		return;
-	}
-
-	/*
-	 * Override the core frequency callback to use
-	 * this clk.
-	 */
-	_meta_clock.get_core_freq = get_core_freq_clk;
-}
-
-/**
- * init_metag_clocks() - Set up clocks from devicetree.
- *
- * Set up important clocks from device tree. In particular any needed for clock
- * sources.
- */
-void __init init_metag_clocks(void)
-{
-	init_metag_core_clock();
-
-	pr_info("Core clock frequency: %lu Hz\n", get_coreclock());
-}
-
-/**
- * setup_meta_clocks() - Early set up of the Meta clock.
- * @desc:	Clock descriptor usually provided by machine description
- *
- * Ensures all callbacks are valid.
- */
-void __init setup_meta_clocks(struct meta_clock_desc *desc)
-{
-	/* copy callbacks */
-	if (desc)
-		_meta_clock = *desc;
-
-	/* set fallback functions */
-	if (!_meta_clock.get_core_freq)
-		_meta_clock.get_core_freq = get_core_freq_default;
-}
-
diff --git a/arch/metag/kernel/core_reg.c b/arch/metag/kernel/core_reg.c
deleted file mode 100644
index df2833f2766f..000000000000
--- a/arch/metag/kernel/core_reg.c
+++ /dev/null
@@ -1,118 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- *  Support for reading and writing Meta core internal registers.
- *
- *  Copyright (C) 2011 Imagination Technologies Ltd.
- *
- */
-
-#include <linux/delay.h>
-#include <linux/export.h>
-
-#include <asm/core_reg.h>
-#include <asm/global_lock.h>
-#include <asm/hwthread.h>
-#include <asm/io.h>
-#include <asm/metag_mem.h>
-#include <asm/metag_regs.h>
-
-#define UNIT_BIT_MASK		TXUXXRXRQ_UXX_BITS
-#define REG_BIT_MASK		TXUXXRXRQ_RX_BITS
-#define THREAD_BIT_MASK		TXUXXRXRQ_TX_BITS
-
-#define UNIT_SHIFTS		TXUXXRXRQ_UXX_S
-#define REG_SHIFTS		TXUXXRXRQ_RX_S
-#define THREAD_SHIFTS		TXUXXRXRQ_TX_S
-
-#define UNIT_VAL(x)		(((x) << UNIT_SHIFTS) & UNIT_BIT_MASK)
-#define REG_VAL(x)		(((x) << REG_SHIFTS) & REG_BIT_MASK)
-#define THREAD_VAL(x)		(((x) << THREAD_SHIFTS) & THREAD_BIT_MASK)
-
-/*
- * core_reg_write() - modify the content of a register in a core unit.
- * @unit:	The unit to be modified.
- * @reg:	Register number within the unit.
- * @thread:	The thread we want to access.
- * @val:	The new value to write.
- *
- * Check asm/metag_regs.h for a list/defines of supported units (ie: TXUPC_ID,
- * TXUTR_ID, etc), and regnums within the units (ie: TXMASKI_REGNUM,
- * TXPOLLI_REGNUM, etc).
- */
-void core_reg_write(int unit, int reg, int thread, unsigned int val)
-{
-	unsigned long flags;
-
-	/* TXUCT_ID has its own memory mapped registers */
-	if (unit == TXUCT_ID) {
-		void __iomem *cu_reg = __CU_addr(thread, reg);
-		metag_out32(val, cu_reg);
-		return;
-	}
-
-	__global_lock2(flags);
-
-	/* wait for ready */
-	while (!(metag_in32(TXUXXRXRQ) & TXUXXRXRQ_DREADY_BIT))
-		udelay(10);
-
-	/* set the value to write */
-	metag_out32(val, TXUXXRXDT);
-
-	/* set the register to write */
-	val = UNIT_VAL(unit) | REG_VAL(reg) | THREAD_VAL(thread);
-	metag_out32(val, TXUXXRXRQ);
-
-	/* wait for finish */
-	while (!(metag_in32(TXUXXRXRQ) & TXUXXRXRQ_DREADY_BIT))
-		udelay(10);
-
-	__global_unlock2(flags);
-}
-EXPORT_SYMBOL(core_reg_write);
-
-/*
- * core_reg_read() - read the content of a register in a core unit.
- * @unit:	The unit to be modified.
- * @reg:	Register number within the unit.
- * @thread:	The thread we want to access.
- *
- * Check asm/metag_regs.h for a list/defines of supported units (ie: TXUPC_ID,
- * TXUTR_ID, etc), and regnums within the units (ie: TXMASKI_REGNUM,
- * TXPOLLI_REGNUM, etc).
- */
-unsigned int core_reg_read(int unit, int reg, int thread)
-{
-	unsigned long flags;
-	unsigned int val;
-
-	/* TXUCT_ID has its own memory mapped registers */
-	if (unit == TXUCT_ID) {
-		void __iomem *cu_reg = __CU_addr(thread, reg);
-		val = metag_in32(cu_reg);
-		return val;
-	}
-
-	__global_lock2(flags);
-
-	/* wait for ready */
-	while (!(metag_in32(TXUXXRXRQ) & TXUXXRXRQ_DREADY_BIT))
-		udelay(10);
-
-	/* set the register to read */
-	val = (UNIT_VAL(unit) | REG_VAL(reg) | THREAD_VAL(thread) |
-							TXUXXRXRQ_RDnWR_BIT);
-	metag_out32(val, TXUXXRXRQ);
-
-	/* wait for finish */
-	while (!(metag_in32(TXUXXRXRQ) & TXUXXRXRQ_DREADY_BIT))
-		udelay(10);
-
-	/* read the register value */
-	val = metag_in32(TXUXXRXDT);
-
-	__global_unlock2(flags);
-
-	return val;
-}
-EXPORT_SYMBOL(core_reg_read);
diff --git a/arch/metag/kernel/da.c b/arch/metag/kernel/da.c
deleted file mode 100644
index a35dbed6fffa..000000000000
--- a/arch/metag/kernel/da.c
+++ /dev/null
@@ -1,25 +0,0 @@
-/*
- * Meta DA JTAG debugger control.
- *
- * Copyright 2012 Imagination Technologies Ltd.
- */
-
-
-#include <linux/export.h>
-#include <linux/io.h>
-#include <linux/kernel.h>
-#include <asm/da.h>
-#include <asm/metag_mem.h>
-
-bool _metag_da_present;
-EXPORT_SYMBOL_GPL(_metag_da_present);
-
-int __init metag_da_probe(void)
-{
-	_metag_da_present = (metag_in32(T0VECINT_BHALT) == 1);
-	if (_metag_da_present)
-		pr_info("DA present\n");
-	else
-		pr_info("DA not present\n");
-	return 0;
-}
diff --git a/arch/metag/kernel/devtree.c b/arch/metag/kernel/devtree.c
deleted file mode 100644
index 6af749a64438..000000000000
--- a/arch/metag/kernel/devtree.c
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- *  linux/arch/metag/kernel/devtree.c
- *
- *  Copyright (C) 2012 Imagination Technologies Ltd.
- *
- *  Based on ARM version:
- *  Copyright (C) 2009 Canonical Ltd. <jeremy.kerr@canonical.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/init.h>
-#include <linux/export.h>
-#include <linux/types.h>
-#include <linux/of_fdt.h>
-
-#include <asm/setup.h>
-#include <asm/page.h>
-#include <asm/mach/arch.h>
-
-static const void * __init arch_get_next_mach(const char *const **match)
-{
-	static const struct machine_desc *mdesc = __arch_info_begin;
-	const struct machine_desc *m = mdesc;
-
-	if (m >= __arch_info_end)
-		return NULL;
-
-	mdesc++;
-	*match = m->dt_compat;
-	return m;
-}
-
-/**
- * setup_machine_fdt - Machine setup when an dtb was passed to the kernel
- * @dt:		virtual address pointer to dt blob
- *
- * If a dtb was passed to the kernel, then use it to choose the correct
- * machine_desc and to setup the system.
- */
-const struct machine_desc * __init setup_machine_fdt(void *dt)
-{
-	const struct machine_desc *mdesc;
-
-	/* check device tree validity */
-	if (!early_init_dt_scan(dt))
-		return NULL;
-
-	mdesc = of_flat_dt_match_machine(NULL, arch_get_next_mach);
-	if (!mdesc)
-		dump_machine_table(); /* does not return */
-	pr_info("Machine name: %s\n", mdesc->name);
-
-	return mdesc;
-}
diff --git a/arch/metag/kernel/dma.c b/arch/metag/kernel/dma.c
deleted file mode 100644
index f0ab3a498328..000000000000
--- a/arch/metag/kernel/dma.c
+++ /dev/null
@@ -1,588 +0,0 @@
-/*
- *  Meta version derived from arch/powerpc/lib/dma-noncoherent.c
- *    Copyright (C) 2008 Imagination Technologies Ltd.
- *
- *  PowerPC version derived from arch/arm/mm/consistent.c
- *    Copyright (C) 2001 Dan Malek (dmalek@jlc.net)
- *
- *  Copyright (C) 2000 Russell King
- *
- * Consistent memory allocators.  Used for DMA devices that want to
- * share uncached memory with the processor core.  The function return
- * is the virtual address and 'dma_handle' is the physical address.
- * Mostly stolen from the ARM port, with some changes for PowerPC.
- *						-- Dan
- *
- * Reorganized to get rid of the arch-specific consistent_* functions
- * and provide non-coherent implementations for the DMA API. -Matt
- *
- * Added in_interrupt() safe dma_alloc_coherent()/dma_free_coherent()
- * implementation. This is pulled straight from ARM and barely
- * modified. -Matt
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/export.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/highmem.h>
-#include <linux/dma-mapping.h>
-#include <linux/slab.h>
-
-#include <asm/tlbflush.h>
-#include <asm/mmu.h>
-
-#define CONSISTENT_OFFSET(x)	(((unsigned long)(x) - CONSISTENT_START) \
-					>> PAGE_SHIFT)
-
-static u64 get_coherent_dma_mask(struct device *dev)
-{
-	u64 mask = ~0ULL;
-
-	if (dev) {
-		mask = dev->coherent_dma_mask;
-
-		/*
-		 * Sanity check the DMA mask - it must be non-zero, and
-		 * must be able to be satisfied by a DMA allocation.
-		 */
-		if (mask == 0) {
-			dev_warn(dev, "coherent DMA mask is unset\n");
-			return 0;
-		}
-	}
-
-	return mask;
-}
-/*
- * This is the page table (2MB) covering uncached, DMA consistent allocations
- */
-static pte_t *consistent_pte;
-static DEFINE_SPINLOCK(consistent_lock);
-
-/*
- * VM region handling support.
- *
- * This should become something generic, handling VM region allocations for
- * vmalloc and similar (ioremap, module space, etc).
- *
- * I envisage vmalloc()'s supporting vm_struct becoming:
- *
- *  struct vm_struct {
- *    struct metag_vm_region	region;
- *    unsigned long	flags;
- *    struct page	**pages;
- *    unsigned int	nr_pages;
- *    unsigned long	phys_addr;
- *  };
- *
- * get_vm_area() would then call metag_vm_region_alloc with an appropriate
- * struct metag_vm_region head (eg):
- *
- *  struct metag_vm_region vmalloc_head = {
- *	.vm_list	= LIST_HEAD_INIT(vmalloc_head.vm_list),
- *	.vm_start	= VMALLOC_START,
- *	.vm_end		= VMALLOC_END,
- *  };
- *
- * However, vmalloc_head.vm_start is variable (typically, it is dependent on
- * the amount of RAM found at boot time.)  I would imagine that get_vm_area()
- * would have to initialise this each time prior to calling
- * metag_vm_region_alloc().
- */
-struct metag_vm_region {
-	struct list_head vm_list;
-	unsigned long vm_start;
-	unsigned long vm_end;
-	struct page		*vm_pages;
-	int			vm_active;
-};
-
-static struct metag_vm_region consistent_head = {
-	.vm_list = LIST_HEAD_INIT(consistent_head.vm_list),
-	.vm_start = CONSISTENT_START,
-	.vm_end = CONSISTENT_END,
-};
-
-static struct metag_vm_region *metag_vm_region_alloc(struct metag_vm_region
-						     *head, size_t size,
-						     gfp_t gfp)
-{
-	unsigned long addr = head->vm_start, end = head->vm_end - size;
-	unsigned long flags;
-	struct metag_vm_region *c, *new;
-
-	new = kmalloc(sizeof(struct metag_vm_region), gfp);
-	if (!new)
-		goto out;
-
-	spin_lock_irqsave(&consistent_lock, flags);
-
-	list_for_each_entry(c, &head->vm_list, vm_list) {
-		if ((addr + size) < addr)
-			goto nospc;
-		if ((addr + size) <= c->vm_start)
-			goto found;
-		addr = c->vm_end;
-		if (addr > end)
-			goto nospc;
-	}
-
-found:
-	/*
-	 * Insert this entry _before_ the one we found.
-	 */
-	list_add_tail(&new->vm_list, &c->vm_list);
-	new->vm_start = addr;
-	new->vm_end = addr + size;
-	new->vm_active = 1;
-
-	spin_unlock_irqrestore(&consistent_lock, flags);
-	return new;
-
-nospc:
-	spin_unlock_irqrestore(&consistent_lock, flags);
-	kfree(new);
-out:
-	return NULL;
-}
-
-static struct metag_vm_region *metag_vm_region_find(struct metag_vm_region
-						    *head, unsigned long addr)
-{
-	struct metag_vm_region *c;
-
-	list_for_each_entry(c, &head->vm_list, vm_list) {
-		if (c->vm_active && c->vm_start == addr)
-			goto out;
-	}
-	c = NULL;
-out:
-	return c;
-}
-
-/*
- * Allocate DMA-coherent memory space and return both the kernel remapped
- * virtual and bus address for that space.
- */
-static void *metag_dma_alloc(struct device *dev, size_t size,
-		dma_addr_t *handle, gfp_t gfp, unsigned long attrs)
-{
-	struct page *page;
-	struct metag_vm_region *c;
-	unsigned long order;
-	u64 mask = get_coherent_dma_mask(dev);
-	u64 limit;
-
-	if (!consistent_pte) {
-		pr_err("%s: not initialised\n", __func__);
-		dump_stack();
-		return NULL;
-	}
-
-	if (!mask)
-		goto no_page;
-	size = PAGE_ALIGN(size);
-	limit = (mask + 1) & ~mask;
-	if ((limit && size >= limit)
-	    || size >= (CONSISTENT_END - CONSISTENT_START)) {
-		pr_warn("coherent allocation too big (requested %#x mask %#Lx)\n",
-			size, mask);
-		return NULL;
-	}
-
-	order = get_order(size);
-
-	if (mask != 0xffffffff)
-		gfp |= GFP_DMA;
-
-	page = alloc_pages(gfp, order);
-	if (!page)
-		goto no_page;
-
-	/*
-	 * Invalidate any data that might be lurking in the
-	 * kernel direct-mapped region for device DMA.
-	 */
-	{
-		void *kaddr = page_address(page);
-		memset(kaddr, 0, size);
-		flush_dcache_region(kaddr, size);
-	}
-
-	/*
-	 * Allocate a virtual address in the consistent mapping region.
-	 */
-	c = metag_vm_region_alloc(&consistent_head, size,
-				  gfp & ~(__GFP_DMA | __GFP_HIGHMEM));
-	if (c) {
-		unsigned long vaddr = c->vm_start;
-		pte_t *pte = consistent_pte + CONSISTENT_OFFSET(vaddr);
-		struct page *end = page + (1 << order);
-
-		c->vm_pages = page;
-		split_page(page, order);
-
-		/*
-		 * Set the "dma handle"
-		 */
-		*handle = page_to_bus(page);
-
-		do {
-			BUG_ON(!pte_none(*pte));
-
-			SetPageReserved(page);
-			set_pte_at(&init_mm, vaddr,
-				   pte, mk_pte(page,
-					       pgprot_writecombine
-					       (PAGE_KERNEL)));
-			page++;
-			pte++;
-			vaddr += PAGE_SIZE;
-		} while (size -= PAGE_SIZE);
-
-		/*
-		 * Free the otherwise unused pages.
-		 */
-		while (page < end) {
-			__free_page(page);
-			page++;
-		}
-
-		return (void *)c->vm_start;
-	}
-
-	if (page)
-		__free_pages(page, order);
-no_page:
-	return NULL;
-}
-
-/*
- * free a page as defined by the above mapping.
- */
-static void metag_dma_free(struct device *dev, size_t size, void *vaddr,
-		dma_addr_t dma_handle, unsigned long attrs)
-{
-	struct metag_vm_region *c;
-	unsigned long flags, addr;
-	pte_t *ptep;
-
-	size = PAGE_ALIGN(size);
-
-	spin_lock_irqsave(&consistent_lock, flags);
-
-	c = metag_vm_region_find(&consistent_head, (unsigned long)vaddr);
-	if (!c)
-		goto no_area;
-
-	c->vm_active = 0;
-	if ((c->vm_end - c->vm_start) != size) {
-		pr_err("%s: freeing wrong coherent size (%ld != %d)\n",
-		       __func__, c->vm_end - c->vm_start, size);
-		dump_stack();
-		size = c->vm_end - c->vm_start;
-	}
-
-	ptep = consistent_pte + CONSISTENT_OFFSET(c->vm_start);
-	addr = c->vm_start;
-	do {
-		pte_t pte = ptep_get_and_clear(&init_mm, addr, ptep);
-		unsigned long pfn;
-
-		ptep++;
-		addr += PAGE_SIZE;
-
-		if (!pte_none(pte) && pte_present(pte)) {
-			pfn = pte_pfn(pte);
-
-			if (pfn_valid(pfn)) {
-				struct page *page = pfn_to_page(pfn);
-				__free_reserved_page(page);
-				continue;
-			}
-		}
-
-		pr_crit("%s: bad page in kernel page table\n",
-			__func__);
-	} while (size -= PAGE_SIZE);
-
-	flush_tlb_kernel_range(c->vm_start, c->vm_end);
-
-	list_del(&c->vm_list);
-
-	spin_unlock_irqrestore(&consistent_lock, flags);
-
-	kfree(c);
-	return;
-
-no_area:
-	spin_unlock_irqrestore(&consistent_lock, flags);
-	pr_err("%s: trying to free invalid coherent area: %p\n",
-	       __func__, vaddr);
-	dump_stack();
-}
-
-static int metag_dma_mmap(struct device *dev, struct vm_area_struct *vma,
-		void *cpu_addr, dma_addr_t dma_addr, size_t size,
-		unsigned long attrs)
-{
-	unsigned long flags, user_size, kern_size;
-	struct metag_vm_region *c;
-	int ret = -ENXIO;
-
-	if (attrs & DMA_ATTR_WRITE_COMBINE)
-		vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
-	else
-		vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
-
-	user_size = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
-
-	spin_lock_irqsave(&consistent_lock, flags);
-	c = metag_vm_region_find(&consistent_head, (unsigned long)cpu_addr);
-	spin_unlock_irqrestore(&consistent_lock, flags);
-
-	if (c) {
-		unsigned long off = vma->vm_pgoff;
-
-		kern_size = (c->vm_end - c->vm_start) >> PAGE_SHIFT;
-
-		if (off < kern_size &&
-		    user_size <= (kern_size - off)) {
-			ret = remap_pfn_range(vma, vma->vm_start,
-					      page_to_pfn(c->vm_pages) + off,
-					      user_size << PAGE_SHIFT,
-					      vma->vm_page_prot);
-		}
-	}
-
-
-	return ret;
-}
-
-/*
- * Initialise the consistent memory allocation.
- */
-static int __init dma_alloc_init(void)
-{
-	pgd_t *pgd, *pgd_k;
-	pud_t *pud, *pud_k;
-	pmd_t *pmd, *pmd_k;
-	pte_t *pte;
-	int ret = 0;
-
-	do {
-		int offset = pgd_index(CONSISTENT_START);
-		pgd = pgd_offset(&init_mm, CONSISTENT_START);
-		pud = pud_alloc(&init_mm, pgd, CONSISTENT_START);
-		pmd = pmd_alloc(&init_mm, pud, CONSISTENT_START);
-		WARN_ON(!pmd_none(*pmd));
-
-		pte = pte_alloc_kernel(pmd, CONSISTENT_START);
-		if (!pte) {
-			pr_err("%s: no pte tables\n", __func__);
-			ret = -ENOMEM;
-			break;
-		}
-
-		pgd_k = ((pgd_t *) mmu_get_base()) + offset;
-		pud_k = pud_offset(pgd_k, CONSISTENT_START);
-		pmd_k = pmd_offset(pud_k, CONSISTENT_START);
-		set_pmd(pmd_k, *pmd);
-
-		consistent_pte = pte;
-	} while (0);
-
-	return ret;
-}
-early_initcall(dma_alloc_init);
-
-/*
- * make an area consistent to devices.
- */
-static void dma_sync_for_device(void *vaddr, size_t size, int dma_direction)
-{
-	/*
-	 * Ensure any writes get through the write combiner. This is necessary
-	 * even with DMA_FROM_DEVICE, or the write may dirty the cache after
-	 * we've invalidated it and get written back during the DMA.
-	 */
-
-	barrier();
-
-	switch (dma_direction) {
-	case DMA_BIDIRECTIONAL:
-		/*
-		 * Writeback to ensure the device can see our latest changes and
-		 * so that we have no dirty lines, and invalidate the cache
-		 * lines too in preparation for receiving the buffer back
-		 * (dma_sync_for_cpu) later.
-		 */
-		flush_dcache_region(vaddr, size);
-		break;
-	case DMA_TO_DEVICE:
-		/*
-		 * Writeback to ensure the device can see our latest changes.
-		 * There's no need to invalidate as the device shouldn't write
-		 * to the buffer.
-		 */
-		writeback_dcache_region(vaddr, size);
-		break;
-	case DMA_FROM_DEVICE:
-		/*
-		 * Invalidate to ensure we have no dirty lines that could get
-		 * written back during the DMA. It's also safe to flush
-		 * (writeback) here if necessary.
-		 */
-		invalidate_dcache_region(vaddr, size);
-		break;
-	case DMA_NONE:
-		BUG();
-	}
-
-	wmb();
-}
-
-/*
- * make an area consistent to the core.
- */
-static void dma_sync_for_cpu(void *vaddr, size_t size, int dma_direction)
-{
-	/*
-	 * Hardware L2 cache prefetch doesn't occur across 4K physical
-	 * boundaries, however according to Documentation/DMA-API-HOWTO.txt
-	 * kmalloc'd memory is DMA'able, so accesses in nearby memory could
-	 * trigger a cache fill in the DMA buffer.
-	 *
-	 * This should never cause dirty lines, so a flush or invalidate should
-	 * be safe to allow us to see data from the device.
-	 */
-	if (_meta_l2c_pf_is_enabled()) {
-		switch (dma_direction) {
-		case DMA_BIDIRECTIONAL:
-		case DMA_FROM_DEVICE:
-			invalidate_dcache_region(vaddr, size);
-			break;
-		case DMA_TO_DEVICE:
-			/* The device shouldn't have written to the buffer */
-			break;
-		case DMA_NONE:
-			BUG();
-		}
-	}
-
-	rmb();
-}
-
-static dma_addr_t metag_dma_map_page(struct device *dev, struct page *page,
-		unsigned long offset, size_t size,
-		enum dma_data_direction direction, unsigned long attrs)
-{
-	if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC))
-		dma_sync_for_device((void *)(page_to_phys(page) + offset),
-				    size, direction);
-	return page_to_phys(page) + offset;
-}
-
-static void metag_dma_unmap_page(struct device *dev, dma_addr_t dma_address,
-		size_t size, enum dma_data_direction direction,
-		unsigned long attrs)
-{
-	if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC))
-		dma_sync_for_cpu(phys_to_virt(dma_address), size, direction);
-}
-
-static int metag_dma_map_sg(struct device *dev, struct scatterlist *sglist,
-		int nents, enum dma_data_direction direction,
-		unsigned long attrs)
-{
-	struct scatterlist *sg;
-	int i;
-
-	for_each_sg(sglist, sg, nents, i) {
-		BUG_ON(!sg_page(sg));
-
-		sg->dma_address = sg_phys(sg);
-
-		if (attrs & DMA_ATTR_SKIP_CPU_SYNC)
-			continue;
-
-		dma_sync_for_device(sg_virt(sg), sg->length, direction);
-	}
-
-	return nents;
-}
-
-
-static void metag_dma_unmap_sg(struct device *dev, struct scatterlist *sglist,
-		int nhwentries, enum dma_data_direction direction,
-		unsigned long attrs)
-{
-	struct scatterlist *sg;
-	int i;
-
-	for_each_sg(sglist, sg, nhwentries, i) {
-		BUG_ON(!sg_page(sg));
-
-		sg->dma_address = sg_phys(sg);
-
-		if (attrs & DMA_ATTR_SKIP_CPU_SYNC)
-			continue;
-
-		dma_sync_for_cpu(sg_virt(sg), sg->length, direction);
-	}
-}
-
-static void metag_dma_sync_single_for_cpu(struct device *dev,
-		dma_addr_t dma_handle, size_t size,
-		enum dma_data_direction direction)
-{
-	dma_sync_for_cpu(phys_to_virt(dma_handle), size, direction);
-}
-
-static void metag_dma_sync_single_for_device(struct device *dev,
-		dma_addr_t dma_handle, size_t size,
-		enum dma_data_direction direction)
-{
-	dma_sync_for_device(phys_to_virt(dma_handle), size, direction);
-}
-
-static void metag_dma_sync_sg_for_cpu(struct device *dev,
-		struct scatterlist *sglist, int nelems,
-		enum dma_data_direction direction)
-{
-	int i;
-	struct scatterlist *sg;
-
-	for_each_sg(sglist, sg, nelems, i)
-		dma_sync_for_cpu(sg_virt(sg), sg->length, direction);
-}
-
-static void metag_dma_sync_sg_for_device(struct device *dev,
-		struct scatterlist *sglist, int nelems,
-		enum dma_data_direction direction)
-{
-	int i;
-	struct scatterlist *sg;
-
-	for_each_sg(sglist, sg, nelems, i)
-		dma_sync_for_device(sg_virt(sg), sg->length, direction);
-}
-
-const struct dma_map_ops metag_dma_ops = {
-	.alloc			= metag_dma_alloc,
-	.free			= metag_dma_free,
-	.map_page		= metag_dma_map_page,
-	.map_sg			= metag_dma_map_sg,
-	.sync_single_for_device	= metag_dma_sync_single_for_device,
-	.sync_single_for_cpu	= metag_dma_sync_single_for_cpu,
-	.sync_sg_for_cpu	= metag_dma_sync_sg_for_cpu,
-	.mmap			= metag_dma_mmap,
-};
-EXPORT_SYMBOL(metag_dma_ops);
diff --git a/arch/metag/kernel/ftrace.c b/arch/metag/kernel/ftrace.c
deleted file mode 100644
index f7b23d300881..000000000000
--- a/arch/metag/kernel/ftrace.c
+++ /dev/null
@@ -1,121 +0,0 @@
-/*
- * Copyright (C) 2008 Imagination Technologies Ltd.
- * Licensed under the GPL
- *
- * Dynamic ftrace support.
- */
-
-#include <linux/ftrace.h>
-#include <linux/io.h>
-#include <linux/uaccess.h>
-
-#include <asm/cacheflush.h>
-
-#define D04_MOVT_TEMPLATE	0x02200005
-#define D04_CALL_TEMPLATE	0xAC200005
-#define D1RTP_MOVT_TEMPLATE	0x03200005
-#define D1RTP_CALL_TEMPLATE	0xAC200006
-
-static const unsigned long NOP[2] = {0xa0fffffe, 0xa0fffffe};
-static unsigned long movt_and_call_insn[2];
-
-static unsigned char *ftrace_nop_replace(void)
-{
-	return (char *)&NOP[0];
-}
-
-static unsigned char *ftrace_call_replace(unsigned long pc, unsigned long addr)
-{
-	unsigned long hi16, low16;
-
-	hi16 = (addr & 0xffff0000) >> 13;
-	low16 = (addr & 0x0000ffff) << 3;
-
-	/*
-	 * The compiler makes the call to mcount_wrapper()
-	 * (Meta's wrapper around mcount()) through the register
-	 * D0.4. So whenever we're patching one of those compiler-generated
-	 * calls we also need to go through D0.4. Otherwise use D1RtP.
-	 */
-	if (pc == (unsigned long)&ftrace_call) {
-		writel(D1RTP_MOVT_TEMPLATE | hi16, &movt_and_call_insn[0]);
-		writel(D1RTP_CALL_TEMPLATE | low16, &movt_and_call_insn[1]);
-	} else {
-		writel(D04_MOVT_TEMPLATE | hi16, &movt_and_call_insn[0]);
-		writel(D04_CALL_TEMPLATE | low16, &movt_and_call_insn[1]);
-	}
-
-	return (unsigned char *)&movt_and_call_insn[0];
-}
-
-static int ftrace_modify_code(unsigned long pc, unsigned char *old_code,
-			      unsigned char *new_code)
-{
-	unsigned char replaced[MCOUNT_INSN_SIZE];
-
-	/*
-	 * Note:
-	 * We are paranoid about modifying text, as if a bug was to happen, it
-	 * could cause us to read or write to someplace that could cause harm.
-	 * Carefully read and modify the code with probe_kernel_*(), and make
-	 * sure what we read is what we expected it to be before modifying it.
-	 */
-
-	/* read the text we want to modify */
-	if (probe_kernel_read(replaced, (void *)pc, MCOUNT_INSN_SIZE))
-		return -EFAULT;
-
-	/* Make sure it is what we expect it to be */
-	if (memcmp(replaced, old_code, MCOUNT_INSN_SIZE) != 0)
-		return -EINVAL;
-
-	/* replace the text with the new text */
-	if (probe_kernel_write((void *)pc, new_code, MCOUNT_INSN_SIZE))
-		return -EPERM;
-
-	flush_icache_range(pc, pc + MCOUNT_INSN_SIZE);
-
-	return 0;
-}
-
-int ftrace_update_ftrace_func(ftrace_func_t func)
-{
-	int ret;
-	unsigned long pc;
-	unsigned char old[MCOUNT_INSN_SIZE], *new;
-
-	pc = (unsigned long)&ftrace_call;
-	memcpy(old, &ftrace_call, MCOUNT_INSN_SIZE);
-	new = ftrace_call_replace(pc, (unsigned long)func);
-	ret = ftrace_modify_code(pc, old, new);
-
-	return ret;
-}
-
-int ftrace_make_nop(struct module *mod,
-		    struct dyn_ftrace *rec, unsigned long addr)
-{
-	unsigned char *new, *old;
-	unsigned long ip = rec->ip;
-
-	old = ftrace_call_replace(ip, addr);
-	new = ftrace_nop_replace();
-
-	return ftrace_modify_code(ip, old, new);
-}
-
-int ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr)
-{
-	unsigned char *new, *old;
-	unsigned long ip = rec->ip;
-
-	old = ftrace_nop_replace();
-	new = ftrace_call_replace(ip, addr);
-
-	return ftrace_modify_code(ip, old, new);
-}
-
-int __init ftrace_dyn_arch_init(void)
-{
-	return 0;
-}
diff --git a/arch/metag/kernel/ftrace_stub.S b/arch/metag/kernel/ftrace_stub.S
deleted file mode 100644
index 3acc288217c0..000000000000
--- a/arch/metag/kernel/ftrace_stub.S
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- * Copyright (C) 2008 Imagination Technologies Ltd.
- * Licensed under the GPL
- *
- */
-
-#include <asm/ftrace.h>
-
-	.text
-#ifdef CONFIG_DYNAMIC_FTRACE
-	.global	_mcount_wrapper
-	.type	_mcount_wrapper,function
-_mcount_wrapper:
-	MOV	PC,D0.4
-
-	.global _ftrace_caller
-	.type	_ftrace_caller,function
-_ftrace_caller:
-	MSETL   [A0StP], D0Ar6, D0Ar4, D0Ar2, D0.4
-	MOV     D1Ar1, D0.4
-	MOV     D0Ar2, D1RtP
-	SUB	D1Ar1,D1Ar1,#MCOUNT_INSN_SIZE
-
-	.global _ftrace_call
-_ftrace_call:
-	MOVT	D1RtP,#HI(_ftrace_stub)
-	CALL	D1RtP,#LO(_ftrace_stub)
-	GETL    D0.4,  D1RtP, [A0StP++#(-8)]
-	GETL    D0Ar2, D1Ar1, [A0StP++#(-8)]
-	GETL    D0Ar4, D1Ar3, [A0StP++#(-8)]
-	GETL    D0Ar6, D1Ar5, [A0StP++#(-8)]
-	MOV     PC, D0.4
-#else
-
-	.global	_mcount_wrapper
-	.type	_mcount_wrapper,function
-_mcount_wrapper:
-	MSETL   [A0StP], D0Ar6, D0Ar4, D0Ar2, D0.4
-	MOV     D1Ar1, D0.4
-	MOV     D0Ar2, D1RtP
-	MOVT    D0Re0,#HI(_ftrace_trace_function)
-	ADD	D0Re0,D0Re0,#LO(_ftrace_trace_function)
-	GET	D1Ar3,[D0Re0]
-	MOVT	D1Re0,#HI(_ftrace_stub)
-	ADD	D1Re0,D1Re0,#LO(_ftrace_stub)
-	CMP	D1Ar3,D1Re0
-	BEQ	$Ltrace_exit
-	MOV	D1RtP,D1Ar3
-	SUB	D1Ar1,D1Ar1,#MCOUNT_INSN_SIZE
-	SWAP	PC,D1RtP
-$Ltrace_exit:
-	GETL    D0.4,  D1RtP, [A0StP++#(-8)]
-	GETL    D0Ar2, D1Ar1, [A0StP++#(-8)]
-	GETL    D0Ar4, D1Ar3, [A0StP++#(-8)]
-	GETL    D0Ar6, D1Ar5, [A0StP++#(-8)]
-	MOV     PC, D0.4
-
-#endif	/* CONFIG_DYNAMIC_FTRACE */
-
-	.global _ftrace_stub
-_ftrace_stub:
-	MOV 	PC,D1RtP
diff --git a/arch/metag/kernel/head.S b/arch/metag/kernel/head.S
deleted file mode 100644
index 3ed27813413e..000000000000
--- a/arch/metag/kernel/head.S
+++ /dev/null
@@ -1,66 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-	! Copyright 2005,2006,2007,2009 Imagination Technologies
-
-#include <linux/init.h>
-#include <asm/metag_mem.h>
-#include <generated/asm-offsets.h>
-#undef __exit
-
-	__HEAD
-	! Setup the stack and get going into _metag_start_kernel
-	.global	__start
-	.type   __start,function
-__start:
-	! D1Ar1 contains pTBI (ISTAT)
-	! D0Ar2 contains pTBI
-	! D1Ar3 contains __pTBISegs
-	! D0Ar4 contains kernel arglist pointer
-
-	MOVT    D0Re0,#HI(___pTBIs)
-	ADD     D0Re0,D0Re0,#LO(___pTBIs)
-	SETL    [D0Re0],D0Ar2,D1Ar1
-	MOVT    D0Re0,#HI(___pTBISegs)
-	ADD     D0Re0,D0Re0,#LO(___pTBISegs)
-	SETD    [D0Re0],D1Ar3
-	MOV	A0FrP,#0
-	MOV	D0Re0,#0
-	MOV	D1Re0,#0
-	MOV	D1Ar3,#0
-	MOV	D1Ar1,D0Ar4			!Store kernel boot params
-	MOV	D1Ar5,#0
-	MOV	D0Ar6,#0
-#ifdef CONFIG_METAG_DSP
-	MOV	D0.8,#0
-#endif
-	MOVT    A0StP,#HI(_init_thread_union)
-	ADD	A0StP,A0StP,#LO(_init_thread_union)
-	ADD     A0StP,A0StP,#THREAD_INFO_SIZE
-	MOVT	D1RtP,#HI(_metag_start_kernel)
-	CALL	D1RtP,#LO(_metag_start_kernel)
-	.size	__start,.-__start
-
-	!! Needed by TBX
-	.global	__exit
-	.type   __exit,function
-__exit:
-	XOR     TXENABLE,D0Re0,D0Re0
-	.size	__exit,.-__exit
-
-#ifdef CONFIG_SMP
-	.global _secondary_startup
-	.type _secondary_startup,function
-_secondary_startup:
-#if CONFIG_PAGE_OFFSET < LINGLOBAL_BASE
-	! In case GCOn has just been turned on we need to fence any writes that
-	! the boot thread might have performed prior to coherency taking effect.
-	MOVT	D0Re0,#HI(LINSYSEVENT_WR_ATOMIC_UNLOCK)
-	MOV	D1Re0,#0
-	SETD	[D0Re0], D1Re0
-#endif
-	MOVT	A0StP,#HI(_secondary_data_stack)
-	ADD	A0StP,A0StP,#LO(_secondary_data_stack)
-	GETD	A0StP,[A0StP]
-	ADD	A0StP,A0StP,#THREAD_INFO_SIZE
-	B	_secondary_start_kernel
-	.size	_secondary_startup,.-_secondary_startup
-#endif
diff --git a/arch/metag/kernel/irq.c b/arch/metag/kernel/irq.c
deleted file mode 100644
index 704cf17f8370..000000000000
--- a/arch/metag/kernel/irq.c
+++ /dev/null
@@ -1,293 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Linux/Meta general interrupt handling code
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/irqchip/metag-ext.h>
-#include <linux/irqchip/metag.h>
-#include <linux/irqdomain.h>
-#include <linux/ratelimit.h>
-
-#include <asm/core_reg.h>
-#include <asm/mach/arch.h>
-#include <linux/uaccess.h>
-
-#ifdef CONFIG_4KSTACKS
-union irq_ctx {
-	struct thread_info      tinfo;
-	u32                     stack[THREAD_SIZE/sizeof(u32)];
-};
-
-static union irq_ctx *hardirq_ctx[NR_CPUS] __read_mostly;
-static union irq_ctx *softirq_ctx[NR_CPUS] __read_mostly;
-#endif
-
-static struct irq_domain *root_domain;
-
-static unsigned int startup_meta_irq(struct irq_data *data)
-{
-	tbi_startup_interrupt(data->hwirq);
-	return 0;
-}
-
-static void shutdown_meta_irq(struct irq_data *data)
-{
-	tbi_shutdown_interrupt(data->hwirq);
-}
-
-void do_IRQ(int irq, struct pt_regs *regs)
-{
-	struct pt_regs *old_regs = set_irq_regs(regs);
-#ifdef CONFIG_4KSTACKS
-	struct irq_desc *desc;
-	union irq_ctx *curctx, *irqctx;
-	u32 *isp;
-#endif
-
-	irq_enter();
-
-	irq = irq_linear_revmap(root_domain, irq);
-
-#ifdef CONFIG_DEBUG_STACKOVERFLOW
-	/* Debugging check for stack overflow: is there less than 1KB free? */
-	{
-		unsigned long sp;
-
-		sp = __core_reg_get(A0StP);
-		sp &= THREAD_SIZE - 1;
-
-		if (unlikely(sp > (THREAD_SIZE - 1024)))
-			pr_err("Stack overflow in do_IRQ: %ld\n", sp);
-	}
-#endif
-
-
-#ifdef CONFIG_4KSTACKS
-	curctx = (union irq_ctx *) current_thread_info();
-	irqctx = hardirq_ctx[smp_processor_id()];
-
-	/*
-	 * this is where we switch to the IRQ stack. However, if we are
-	 * already using the IRQ stack (because we interrupted a hardirq
-	 * handler) we can't do that and just have to keep using the
-	 * current stack (which is the irq stack already after all)
-	 */
-	if (curctx != irqctx) {
-		/* build the stack frame on the IRQ stack */
-		isp = (u32 *) ((char *)irqctx + sizeof(struct thread_info));
-		irqctx->tinfo.task = curctx->tinfo.task;
-
-		/*
-		 * Copy the softirq bits in preempt_count so that the
-		 * softirq checks work in the hardirq context.
-		 */
-		irqctx->tinfo.preempt_count =
-			(irqctx->tinfo.preempt_count & ~SOFTIRQ_MASK) |
-			(curctx->tinfo.preempt_count & SOFTIRQ_MASK);
-
-		desc = irq_to_desc(irq);
-
-		asm volatile (
-			"MOV   D0.5,%0\n"
-			"MOV   D1Ar1,%1\n"
-			"MOV   D1RtP,%2\n"
-			"SWAP  A0StP,D0.5\n"
-			"SWAP  PC,D1RtP\n"
-			"MOV   A0StP,D0.5\n"
-			:
-			: "r" (isp), "r" (desc), "r" (desc->handle_irq)
-			: "memory", "cc", "D1Ar1", "D0Ar2", "D1Ar3", "D0Ar4",
-			  "D1Ar5", "D0Ar6", "D0Re0", "D1Re0", "D0.4", "D1RtP",
-			  "D0.5"
-			);
-	} else
-#endif
-		generic_handle_irq(irq);
-
-	irq_exit();
-
-	set_irq_regs(old_regs);
-}
-
-#ifdef CONFIG_4KSTACKS
-
-static char softirq_stack[NR_CPUS * THREAD_SIZE] __page_aligned_bss;
-
-static char hardirq_stack[NR_CPUS * THREAD_SIZE] __page_aligned_bss;
-
-/*
- * allocate per-cpu stacks for hardirq and for softirq processing
- */
-void irq_ctx_init(int cpu)
-{
-	union irq_ctx *irqctx;
-
-	if (hardirq_ctx[cpu])
-		return;
-
-	irqctx = (union irq_ctx *) &hardirq_stack[cpu * THREAD_SIZE];
-	irqctx->tinfo.task              = NULL;
-	irqctx->tinfo.cpu               = cpu;
-	irqctx->tinfo.preempt_count     = HARDIRQ_OFFSET;
-	irqctx->tinfo.addr_limit        = MAKE_MM_SEG(0);
-
-	hardirq_ctx[cpu] = irqctx;
-
-	irqctx = (union irq_ctx *) &softirq_stack[cpu * THREAD_SIZE];
-	irqctx->tinfo.task              = NULL;
-	irqctx->tinfo.cpu               = cpu;
-	irqctx->tinfo.preempt_count     = 0;
-	irqctx->tinfo.addr_limit        = MAKE_MM_SEG(0);
-
-	softirq_ctx[cpu] = irqctx;
-
-	pr_info("CPU %u irqstacks, hard=%p soft=%p\n",
-		cpu, hardirq_ctx[cpu], softirq_ctx[cpu]);
-}
-
-void irq_ctx_exit(int cpu)
-{
-	hardirq_ctx[smp_processor_id()] = NULL;
-}
-
-extern asmlinkage void __do_softirq(void);
-
-void do_softirq_own_stack(void)
-{
-	struct thread_info *curctx;
-	union irq_ctx *irqctx;
-	u32 *isp;
-
-	curctx = current_thread_info();
-	irqctx = softirq_ctx[smp_processor_id()];
-	irqctx->tinfo.task = curctx->task;
-
-	/* build the stack frame on the softirq stack */
-	isp = (u32 *) ((char *)irqctx + sizeof(struct thread_info));
-
-	asm volatile (
-		"MOV   D0.5,%0\n"
-		"SWAP  A0StP,D0.5\n"
-		"CALLR D1RtP,___do_softirq\n"
-		"MOV   A0StP,D0.5\n"
-		:
-		: "r" (isp)
-		: "memory", "cc", "D1Ar1", "D0Ar2", "D1Ar3", "D0Ar4",
-		  "D1Ar5", "D0Ar6", "D0Re0", "D1Re0", "D0.4", "D1RtP",
-		  "D0.5"
-		);
-}
-#endif
-
-static struct irq_chip meta_irq_type = {
-	.name = "META-IRQ",
-	.irq_startup = startup_meta_irq,
-	.irq_shutdown = shutdown_meta_irq,
-};
-
-/**
- * tbisig_map() - Map a TBI signal number to a virtual IRQ number.
- * @hw:		Number of the TBI signal. Must be in range.
- *
- * Returns:	The virtual IRQ number of the TBI signal number IRQ specified by
- *		@hw.
- */
-int tbisig_map(unsigned int hw)
-{
-	return irq_create_mapping(root_domain, hw);
-}
-
-/**
- * metag_tbisig_map() - map a tbi signal to a Linux virtual IRQ number
- * @d:		root irq domain
- * @irq:	virtual irq number
- * @hw:		hardware irq number (TBI signal number)
- *
- * This sets up a virtual irq for a specified TBI signal number.
- */
-static int metag_tbisig_map(struct irq_domain *d, unsigned int irq,
-			    irq_hw_number_t hw)
-{
-#ifdef CONFIG_SMP
-	irq_set_chip_and_handler(irq, &meta_irq_type, handle_percpu_irq);
-#else
-	irq_set_chip_and_handler(irq, &meta_irq_type, handle_simple_irq);
-#endif
-	return 0;
-}
-
-static const struct irq_domain_ops metag_tbisig_domain_ops = {
-	.map = metag_tbisig_map,
-};
-
-/*
- * void init_IRQ(void)
- *
- * Parameters:	None
- *
- * Returns:	Nothing
- *
- * This function should be called during kernel startup to initialize
- * the IRQ handling routines.
- */
-void __init init_IRQ(void)
-{
-	root_domain = irq_domain_add_linear(NULL, 32,
-					    &metag_tbisig_domain_ops, NULL);
-	if (unlikely(!root_domain))
-		panic("init_IRQ: cannot add root IRQ domain");
-
-	irq_ctx_init(smp_processor_id());
-
-	init_internal_IRQ();
-	init_external_IRQ();
-
-	if (machine_desc->init_irq)
-		machine_desc->init_irq();
-}
-
-int __init arch_probe_nr_irqs(void)
-{
-	if (machine_desc->nr_irqs)
-		nr_irqs = machine_desc->nr_irqs;
-	return 0;
-}
-
-#ifdef CONFIG_HOTPLUG_CPU
-/*
- * The CPU has been marked offline.  Migrate IRQs off this CPU.  If
- * the affinity settings do not allow other CPUs, force them onto any
- * available CPU.
- */
-void migrate_irqs(void)
-{
-	unsigned int i, cpu = smp_processor_id();
-
-	for_each_active_irq(i) {
-		struct irq_data *data = irq_get_irq_data(i);
-		struct cpumask *mask;
-		unsigned int newcpu;
-
-		if (irqd_is_per_cpu(data))
-			continue;
-
-		mask = irq_data_get_affinity_mask(data);
-		if (!cpumask_test_cpu(cpu, mask))
-			continue;
-
-		newcpu = cpumask_any_and(mask, cpu_online_mask);
-
-		if (newcpu >= nr_cpu_ids) {
-			pr_info_ratelimited("IRQ%u no longer affine to CPU%u\n",
-					    i, cpu);
-
-			cpumask_setall(mask);
-		}
-		irq_set_affinity(i, mask);
-	}
-}
-#endif /* CONFIG_HOTPLUG_CPU */
diff --git a/arch/metag/kernel/kick.c b/arch/metag/kernel/kick.c
deleted file mode 100644
index beb377621322..000000000000
--- a/arch/metag/kernel/kick.c
+++ /dev/null
@@ -1,110 +0,0 @@
-/*
- *  Copyright (C) 2009 Imagination Technologies
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file COPYING in the main directory of this archive
- * for more details.
- *
- * The Meta KICK interrupt mechanism is generally a useful feature, so
- * we provide an interface for registering multiple interrupt
- * handlers. All the registered interrupt handlers are "chained". When
- * a KICK interrupt is received the first function in the list is
- * called. If that interrupt handler cannot handle the KICK the next
- * one is called, then the next until someone handles it (or we run
- * out of functions). As soon as one function handles the interrupt no
- * other handlers are called.
- *
- * The only downside of chaining interrupt handlers is that each
- * handler must be able to detect whether the KICK was intended for it
- * or not.  For example, when the IPI handler runs and it sees that
- * there are no IPI messages it must not signal that the KICK was
- * handled, thereby giving the other handlers a chance to run.
- *
- * The reason that we provide our own interface for calling KICK
- * handlers instead of using the generic kernel infrastructure is that
- * the KICK handlers require access to a CPU's pTBI structure. So we
- * pass it as an argument.
- */
-#include <linux/export.h>
-#include <linux/hardirq.h>
-#include <linux/irq.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/types.h>
-
-#include <asm/traps.h>
-
-/*
- * All accesses/manipulations of kick_handlers_list should be
- * performed while holding kick_handlers_lock.
- */
-static DEFINE_SPINLOCK(kick_handlers_lock);
-static LIST_HEAD(kick_handlers_list);
-
-void kick_register_func(struct kick_irq_handler *kh)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&kick_handlers_lock, flags);
-
-	list_add_tail(&kh->list, &kick_handlers_list);
-
-	spin_unlock_irqrestore(&kick_handlers_lock, flags);
-}
-EXPORT_SYMBOL(kick_register_func);
-
-void kick_unregister_func(struct kick_irq_handler *kh)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&kick_handlers_lock, flags);
-
-	list_del(&kh->list);
-
-	spin_unlock_irqrestore(&kick_handlers_lock, flags);
-}
-EXPORT_SYMBOL(kick_unregister_func);
-
-TBIRES
-kick_handler(TBIRES State, int SigNum, int Triggers, int Inst, PTBI pTBI)
-{
-	struct pt_regs *old_regs;
-	struct kick_irq_handler *kh;
-	struct list_head *lh;
-	int handled = 0;
-	TBIRES ret;
-
-	head_end(State, ~INTS_OFF_MASK);
-
-	/* If we interrupted user code handle any critical sections. */
-	if (State.Sig.SaveMask & TBICTX_PRIV_BIT)
-		restart_critical_section(State);
-
-	trace_hardirqs_off();
-
-	old_regs = set_irq_regs((struct pt_regs *)State.Sig.pCtx);
-	irq_enter();
-
-	/*
-	 * There is no need to disable interrupts here because we
-	 * can't nest KICK interrupts in a KICK interrupt handler.
-	 */
-	spin_lock(&kick_handlers_lock);
-
-	list_for_each(lh, &kick_handlers_list) {
-		kh = list_entry(lh, struct kick_irq_handler, list);
-
-		ret = kh->func(State, SigNum, Triggers, Inst, pTBI, &handled);
-		if (handled)
-			break;
-	}
-
-	spin_unlock(&kick_handlers_lock);
-
-	WARN_ON(!handled);
-
-	irq_exit();
-	set_irq_regs(old_regs);
-
-	return tail_end(ret);
-}
diff --git a/arch/metag/kernel/machines.c b/arch/metag/kernel/machines.c
deleted file mode 100644
index e49790181051..000000000000
--- a/arch/metag/kernel/machines.c
+++ /dev/null
@@ -1,21 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- *  arch/metag/kernel/machines.c
- *
- *  Copyright (C) 2012 Imagination Technologies Ltd.
- *
- *  Generic Meta Boards.
- */
-
-#include <linux/init.h>
-#include <asm/irq.h>
-#include <asm/mach/arch.h>
-
-static const char *meta_boards_compat[] __initdata = {
-	"img,meta",
-	NULL,
-};
-
-MACHINE_START(META, "Generic Meta")
-	.dt_compat	= meta_boards_compat,
-MACHINE_END
diff --git a/arch/metag/kernel/metag_ksyms.c b/arch/metag/kernel/metag_ksyms.c
deleted file mode 100644
index e312386efb72..000000000000
--- a/arch/metag/kernel/metag_ksyms.c
+++ /dev/null
@@ -1,55 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/export.h>
-#include <linux/types.h>
-
-#include <asm/checksum.h>
-#include <asm/div64.h>
-#include <asm/ftrace.h>
-#include <asm/page.h>
-#include <asm/string.h>
-#include <asm/tbx.h>
-
-EXPORT_SYMBOL(clear_page);
-EXPORT_SYMBOL(copy_page);
-
-#ifdef CONFIG_FLATMEM
-/* needed for the pfn_valid macro */
-EXPORT_SYMBOL(max_pfn);
-EXPORT_SYMBOL(min_low_pfn);
-#endif
-
-/* Network checksum functions */
-EXPORT_SYMBOL(csum_partial);
-
-/* TBI symbols */
-EXPORT_SYMBOL(__TBI);
-EXPORT_SYMBOL(__TBIFindSeg);
-EXPORT_SYMBOL(__TBIPoll);
-EXPORT_SYMBOL(__TBITimeStamp);
-
-#define DECLARE_EXPORT(name) extern void name(void); EXPORT_SYMBOL(name)
-
-/* libgcc functions */
-DECLARE_EXPORT(__ashldi3);
-DECLARE_EXPORT(__ashrdi3);
-DECLARE_EXPORT(__lshrdi3);
-DECLARE_EXPORT(__udivsi3);
-DECLARE_EXPORT(__divsi3);
-DECLARE_EXPORT(__umodsi3);
-DECLARE_EXPORT(__modsi3);
-DECLARE_EXPORT(__muldi3);
-DECLARE_EXPORT(__cmpdi2);
-DECLARE_EXPORT(__ucmpdi2);
-
-/* Maths functions */
-EXPORT_SYMBOL(div_u64);
-EXPORT_SYMBOL(div_s64);
-
-/* String functions */
-EXPORT_SYMBOL(memcpy);
-EXPORT_SYMBOL(memset);
-EXPORT_SYMBOL(memmove);
-
-#ifdef CONFIG_FUNCTION_TRACER
-EXPORT_SYMBOL(mcount_wrapper);
-#endif
diff --git a/arch/metag/kernel/module.c b/arch/metag/kernel/module.c
deleted file mode 100644
index bb8dfba9a763..000000000000
--- a/arch/metag/kernel/module.c
+++ /dev/null
@@ -1,284 +0,0 @@
-/*  Kernel module help for Meta.
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-*/
-#include <linux/moduleloader.h>
-#include <linux/elf.h>
-#include <linux/vmalloc.h>
-#include <linux/fs.h>
-#include <linux/string.h>
-#include <linux/kernel.h>
-#include <linux/sort.h>
-
-#include <asm/unaligned.h>
-
-/* Count how many different relocations (different symbol, different
-   addend) */
-static unsigned int count_relocs(const Elf32_Rela *rela, unsigned int num)
-{
-	unsigned int i, r_info, r_addend, _count_relocs;
-
-	_count_relocs = 0;
-	r_info = 0;
-	r_addend = 0;
-	for (i = 0; i < num; i++)
-		/* Only count relbranch relocs, others don't need stubs */
-		if (ELF32_R_TYPE(rela[i].r_info) == R_METAG_RELBRANCH &&
-		    (r_info != ELF32_R_SYM(rela[i].r_info) ||
-		     r_addend != rela[i].r_addend)) {
-			_count_relocs++;
-			r_info = ELF32_R_SYM(rela[i].r_info);
-			r_addend = rela[i].r_addend;
-		}
-
-	return _count_relocs;
-}
-
-static int relacmp(const void *_x, const void *_y)
-{
-	const Elf32_Rela *x, *y;
-
-	y = (Elf32_Rela *)_x;
-	x = (Elf32_Rela *)_y;
-
-	/* Compare the entire r_info (as opposed to ELF32_R_SYM(r_info) only) to
-	 * make the comparison cheaper/faster. It won't affect the sorting or
-	 * the counting algorithms' performance
-	 */
-	if (x->r_info < y->r_info)
-		return -1;
-	else if (x->r_info > y->r_info)
-		return 1;
-	else if (x->r_addend < y->r_addend)
-		return -1;
-	else if (x->r_addend > y->r_addend)
-		return 1;
-	else
-		return 0;
-}
-
-static void relaswap(void *_x, void *_y, int size)
-{
-	uint32_t *x, *y, tmp;
-	int i;
-
-	y = (uint32_t *)_x;
-	x = (uint32_t *)_y;
-
-	for (i = 0; i < sizeof(Elf32_Rela) / sizeof(uint32_t); i++) {
-		tmp = x[i];
-		x[i] = y[i];
-		y[i] = tmp;
-	}
-}
-
-/* Get the potential trampolines size required of the init and
-   non-init sections */
-static unsigned long get_plt_size(const Elf32_Ehdr *hdr,
-				  const Elf32_Shdr *sechdrs,
-				  const char *secstrings,
-				  int is_init)
-{
-	unsigned long ret = 0;
-	unsigned i;
-
-	/* Everything marked ALLOC (this includes the exported
-	   symbols) */
-	for (i = 1; i < hdr->e_shnum; i++) {
-		/* If it's called *.init*, and we're not init, we're
-		   not interested */
-		if ((strstr(secstrings + sechdrs[i].sh_name, ".init") != NULL)
-		    != is_init)
-			continue;
-
-		/* We don't want to look at debug sections. */
-		if (strstr(secstrings + sechdrs[i].sh_name, ".debug") != NULL)
-			continue;
-
-		if (sechdrs[i].sh_type == SHT_RELA) {
-			pr_debug("Found relocations in section %u\n", i);
-			pr_debug("Ptr: %p.  Number: %u\n",
-				 (void *)hdr + sechdrs[i].sh_offset,
-				 sechdrs[i].sh_size / sizeof(Elf32_Rela));
-
-			/* Sort the relocation information based on a symbol and
-			 * addend key. This is a stable O(n*log n) complexity
-			 * alogrithm but it will reduce the complexity of
-			 * count_relocs() to linear complexity O(n)
-			 */
-			sort((void *)hdr + sechdrs[i].sh_offset,
-			     sechdrs[i].sh_size / sizeof(Elf32_Rela),
-			     sizeof(Elf32_Rela), relacmp, relaswap);
-
-			ret += count_relocs((void *)hdr
-					     + sechdrs[i].sh_offset,
-					     sechdrs[i].sh_size
-					     / sizeof(Elf32_Rela))
-				* sizeof(struct metag_plt_entry);
-		}
-	}
-
-	return ret;
-}
-
-int module_frob_arch_sections(Elf32_Ehdr *hdr,
-			      Elf32_Shdr *sechdrs,
-			      char *secstrings,
-			      struct module *me)
-{
-	unsigned int i;
-
-	/* Find .plt and .init.plt sections */
-	for (i = 0; i < hdr->e_shnum; i++) {
-		if (strcmp(secstrings + sechdrs[i].sh_name, ".init.plt") == 0)
-			me->arch.init_plt_section = i;
-		else if (strcmp(secstrings + sechdrs[i].sh_name, ".plt") == 0)
-			me->arch.core_plt_section = i;
-	}
-	if (!me->arch.core_plt_section || !me->arch.init_plt_section) {
-		pr_err("Module doesn't contain .plt or .init.plt sections.\n");
-		return -ENOEXEC;
-	}
-
-	/* Override their sizes */
-	sechdrs[me->arch.core_plt_section].sh_size
-		= get_plt_size(hdr, sechdrs, secstrings, 0);
-	sechdrs[me->arch.core_plt_section].sh_type = SHT_NOBITS;
-	sechdrs[me->arch.init_plt_section].sh_size
-		= get_plt_size(hdr, sechdrs, secstrings, 1);
-	sechdrs[me->arch.init_plt_section].sh_type = SHT_NOBITS;
-	return 0;
-}
-
-/* Set up a trampoline in the PLT to bounce us to the distant function */
-static uint32_t do_plt_call(void *location, Elf32_Addr val,
-			    Elf32_Shdr *sechdrs, struct module *mod)
-{
-	struct metag_plt_entry *entry;
-	/* Instructions used to do the indirect jump.  */
-	uint32_t tramp[2];
-
-	/* We have to trash a register, so we assume that any control
-	   transfer more than 21-bits away must be a function call
-	   (so we can use a call-clobbered register).  */
-
-	/* MOVT D0Re0,#HI(v) */
-	tramp[0] = 0x02000005 | (((val & 0xffff0000) >> 16) << 3);
-	/* JUMP D0Re0,#LO(v) */
-	tramp[1] = 0xac000001 | ((val & 0x0000ffff) << 3);
-
-	/* Init, or core PLT? */
-	if (location >= mod->core_layout.base
-	    && location < mod->core_layout.base + mod->core_layout.size)
-		entry = (void *)sechdrs[mod->arch.core_plt_section].sh_addr;
-	else
-		entry = (void *)sechdrs[mod->arch.init_plt_section].sh_addr;
-
-	/* Find this entry, or if that fails, the next avail. entry */
-	while (entry->tramp[0])
-		if (entry->tramp[0] == tramp[0] && entry->tramp[1] == tramp[1])
-			return (uint32_t)entry;
-		else
-			entry++;
-
-	entry->tramp[0] = tramp[0];
-	entry->tramp[1] = tramp[1];
-
-	return (uint32_t)entry;
-}
-
-int apply_relocate_add(Elf32_Shdr *sechdrs,
-		   const char *strtab,
-		   unsigned int symindex,
-		   unsigned int relsec,
-		   struct module *me)
-{
-	unsigned int i;
-	Elf32_Rela *rel = (void *)sechdrs[relsec].sh_addr;
-	Elf32_Sym *sym;
-	Elf32_Addr relocation;
-	uint32_t *location;
-	int32_t value;
-
-	pr_debug("Applying relocate section %u to %u\n", relsec,
-		 sechdrs[relsec].sh_info);
-	for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
-		/* This is where to make the change */
-		location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr
-			+ rel[i].r_offset;
-		/* This is the symbol it is referring to.  Note that all
-		   undefined symbols have been resolved.  */
-		sym = (Elf32_Sym *)sechdrs[symindex].sh_addr
-			+ ELF32_R_SYM(rel[i].r_info);
-		relocation = sym->st_value + rel[i].r_addend;
-
-		switch (ELF32_R_TYPE(rel[i].r_info)) {
-		case R_METAG_NONE:
-			break;
-		case R_METAG_HIADDR16:
-			relocation >>= 16;
-		case R_METAG_LOADDR16:
-			*location = (*location & 0xfff80007) |
-				((relocation & 0xffff) << 3);
-			break;
-		case R_METAG_ADDR32:
-			/*
-			 * Packed data structures may cause a misaligned
-			 * R_METAG_ADDR32 to be emitted.
-			 */
-			put_unaligned(relocation, location);
-			break;
-		case R_METAG_GETSETOFF:
-			*location += ((relocation & 0xfff) << 7);
-			break;
-		case R_METAG_RELBRANCH:
-			if (*location & (0x7ffff << 5)) {
-				pr_err("bad relbranch relocation\n");
-				break;
-			}
-
-			/* This jump is too big for the offset slot. Build
-			 * a PLT to jump through to get to where we want to go.
-			 * NB: 21bit check - not scaled to 19bit yet
-			 */
-			if (((int32_t)(relocation -
-				       (uint32_t)location) > 0xfffff) ||
-			    ((int32_t)(relocation -
-				       (uint32_t)location) < -0xfffff)) {
-				relocation = do_plt_call(location, relocation,
-							 sechdrs, me);
-			}
-
-			value = relocation - (uint32_t)location;
-
-			/* branch instruction aligned */
-			value /= 4;
-
-			if ((value > 0x7ffff) || (value < -0x7ffff)) {
-				/*
-				 * this should have been caught by the code
-				 * above!
-				 */
-				pr_err("overflow of relbranch reloc\n");
-			}
-
-			*location = (*location & (~(0x7ffff << 5))) |
-				((value & 0x7ffff) << 5);
-			break;
-
-		default:
-			pr_err("module %s: Unknown relocation: %u\n",
-			       me->name, ELF32_R_TYPE(rel[i].r_info));
-			return -ENOEXEC;
-		}
-	}
-	return 0;
-}
diff --git a/arch/metag/kernel/perf/Makefile b/arch/metag/kernel/perf/Makefile
deleted file mode 100644
index b158cb27208d..000000000000
--- a/arch/metag/kernel/perf/Makefile
+++ /dev/null
@@ -1,3 +0,0 @@
-# Makefile for performance event core
-
-obj-y += perf_event.o
diff --git a/arch/metag/kernel/perf/perf_event.c b/arch/metag/kernel/perf/perf_event.c
deleted file mode 100644
index 7e793eb0c1fe..000000000000
--- a/arch/metag/kernel/perf/perf_event.c
+++ /dev/null
@@ -1,879 +0,0 @@
-/*
- * Meta performance counter support.
- *  Copyright (C) 2012 Imagination Technologies Ltd
- *
- * This code is based on the sh pmu code:
- *  Copyright (C) 2009 Paul Mundt
- *
- * and on the arm pmu code:
- *  Copyright (C) 2009 picoChip Designs, Ltd., James Iles
- *  Copyright (C) 2010 ARM Ltd., Will Deacon <will.deacon@arm.com>
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- */
-
-#include <linux/atomic.h>
-#include <linux/export.h>
-#include <linux/init.h>
-#include <linux/irqchip/metag.h>
-#include <linux/perf_event.h>
-#include <linux/slab.h>
-
-#include <asm/core_reg.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/processor.h>
-
-#include "perf_event.h"
-
-static int _hw_perf_event_init(struct perf_event *);
-static void _hw_perf_event_destroy(struct perf_event *);
-
-/* Determines which core type we are */
-static struct metag_pmu *metag_pmu __read_mostly;
-
-/* Processor specific data */
-static DEFINE_PER_CPU(struct cpu_hw_events, cpu_hw_events);
-
-/* PMU admin */
-const char *perf_pmu_name(void)
-{
-	if (!metag_pmu)
-		return NULL;
-
-	return metag_pmu->name;
-}
-EXPORT_SYMBOL_GPL(perf_pmu_name);
-
-int perf_num_counters(void)
-{
-	if (metag_pmu)
-		return metag_pmu->max_events;
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(perf_num_counters);
-
-static inline int metag_pmu_initialised(void)
-{
-	return !!metag_pmu;
-}
-
-static void release_pmu_hardware(void)
-{
-	int irq;
-	unsigned int version = (metag_pmu->version &
-			(METAC_ID_MINOR_BITS | METAC_ID_REV_BITS)) >>
-			METAC_ID_REV_S;
-
-	/* Early cores don't have overflow interrupts */
-	if (version < 0x0104)
-		return;
-
-	irq = internal_irq_map(17);
-	if (irq >= 0)
-		free_irq(irq, (void *)1);
-
-	irq = internal_irq_map(16);
-	if (irq >= 0)
-		free_irq(irq, (void *)0);
-}
-
-static int reserve_pmu_hardware(void)
-{
-	int err = 0, irq[2];
-	unsigned int version = (metag_pmu->version &
-			(METAC_ID_MINOR_BITS | METAC_ID_REV_BITS)) >>
-			METAC_ID_REV_S;
-
-	/* Early cores don't have overflow interrupts */
-	if (version < 0x0104)
-		goto out;
-
-	/*
-	 * Bit 16 on HWSTATMETA is the interrupt for performance counter 0;
-	 * similarly, 17 is the interrupt for performance counter 1.
-	 * We can't (yet) interrupt on the cycle counter, because it's a
-	 * register, however it holds a 32-bit value as opposed to 24-bit.
-	 */
-	irq[0] = internal_irq_map(16);
-	if (irq[0] < 0) {
-		pr_err("unable to map internal IRQ %d\n", 16);
-		goto out;
-	}
-	err = request_irq(irq[0], metag_pmu->handle_irq, IRQF_NOBALANCING,
-			"metagpmu0", (void *)0);
-	if (err) {
-		pr_err("unable to request IRQ%d for metag PMU counters\n",
-				irq[0]);
-		goto out;
-	}
-
-	irq[1] = internal_irq_map(17);
-	if (irq[1] < 0) {
-		pr_err("unable to map internal IRQ %d\n", 17);
-		goto out_irq1;
-	}
-	err = request_irq(irq[1], metag_pmu->handle_irq, IRQF_NOBALANCING,
-			"metagpmu1", (void *)1);
-	if (err) {
-		pr_err("unable to request IRQ%d for metag PMU counters\n",
-				irq[1]);
-		goto out_irq1;
-	}
-
-	return 0;
-
-out_irq1:
-	free_irq(irq[0], (void *)0);
-out:
-	return err;
-}
-
-/* PMU operations */
-static void metag_pmu_enable(struct pmu *pmu)
-{
-}
-
-static void metag_pmu_disable(struct pmu *pmu)
-{
-}
-
-static int metag_pmu_event_init(struct perf_event *event)
-{
-	int err = 0;
-	atomic_t *active_events = &metag_pmu->active_events;
-
-	if (!metag_pmu_initialised()) {
-		err = -ENODEV;
-		goto out;
-	}
-
-	if (has_branch_stack(event))
-		return -EOPNOTSUPP;
-
-	event->destroy = _hw_perf_event_destroy;
-
-	if (!atomic_inc_not_zero(active_events)) {
-		mutex_lock(&metag_pmu->reserve_mutex);
-		if (atomic_read(active_events) == 0)
-			err = reserve_pmu_hardware();
-
-		if (!err)
-			atomic_inc(active_events);
-
-		mutex_unlock(&metag_pmu->reserve_mutex);
-	}
-
-	/* Hardware and caches counters */
-	switch (event->attr.type) {
-	case PERF_TYPE_HARDWARE:
-	case PERF_TYPE_HW_CACHE:
-	case PERF_TYPE_RAW:
-		err = _hw_perf_event_init(event);
-		break;
-
-	default:
-		return -ENOENT;
-	}
-
-	if (err)
-		event->destroy(event);
-
-out:
-	return err;
-}
-
-void metag_pmu_event_update(struct perf_event *event,
-		struct hw_perf_event *hwc, int idx)
-{
-	u64 prev_raw_count, new_raw_count;
-	s64 delta;
-
-	/*
-	 * If this counter is chained, it may be that the previous counter
-	 * value has been changed beneath us.
-	 *
-	 * To get around this, we read and exchange the new raw count, then
-	 * add the delta (new - prev) to the generic counter atomically.
-	 *
-	 * Without interrupts, this is the simplest approach.
-	 */
-again:
-	prev_raw_count = local64_read(&hwc->prev_count);
-	new_raw_count = metag_pmu->read(idx);
-
-	if (local64_cmpxchg(&hwc->prev_count, prev_raw_count,
-			new_raw_count) != prev_raw_count)
-		goto again;
-
-	/*
-	 * Calculate the delta and add it to the counter.
-	 */
-	delta = (new_raw_count - prev_raw_count) & MAX_PERIOD;
-
-	local64_add(delta, &event->count);
-	local64_sub(delta, &hwc->period_left);
-}
-
-int metag_pmu_event_set_period(struct perf_event *event,
-		struct hw_perf_event *hwc, int idx)
-{
-	s64 left = local64_read(&hwc->period_left);
-	s64 period = hwc->sample_period;
-	int ret = 0;
-
-	/* The period may have been changed */
-	if (unlikely(period != hwc->last_period))
-		left += period - hwc->last_period;
-
-	if (unlikely(left <= -period)) {
-		left = period;
-		local64_set(&hwc->period_left, left);
-		hwc->last_period = period;
-		ret = 1;
-	}
-
-	if (unlikely(left <= 0)) {
-		left += period;
-		local64_set(&hwc->period_left, left);
-		hwc->last_period = period;
-		ret = 1;
-	}
-
-	if (left > (s64)metag_pmu->max_period)
-		left = metag_pmu->max_period;
-
-	if (metag_pmu->write) {
-		local64_set(&hwc->prev_count, -(s32)left);
-		metag_pmu->write(idx, -left & MAX_PERIOD);
-	}
-
-	perf_event_update_userpage(event);
-
-	return ret;
-}
-
-static void metag_pmu_start(struct perf_event *event, int flags)
-{
-	struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
-	struct hw_perf_event *hwc = &event->hw;
-	int idx = hwc->idx;
-
-	if (WARN_ON_ONCE(idx == -1))
-		return;
-
-	/*
-	 * We always have to reprogram the period, so ignore PERF_EF_RELOAD.
-	 */
-	if (flags & PERF_EF_RELOAD)
-		WARN_ON_ONCE(!(hwc->state & PERF_HES_UPTODATE));
-
-	hwc->state = 0;
-
-	/*
-	 * Reset the period.
-	 * Some counters can't be stopped (i.e. are core global), so when the
-	 * counter was 'stopped' we merely disabled the IRQ. If we don't reset
-	 * the period, then we'll either: a) get an overflow too soon;
-	 * or b) too late if the overflow happened since disabling.
-	 * Obviously, this has little bearing on cores without the overflow
-	 * interrupt, as the performance counter resets to zero on write
-	 * anyway.
-	 */
-	if (metag_pmu->max_period)
-		metag_pmu_event_set_period(event, hwc, hwc->idx);
-	cpuc->events[idx] = event;
-	metag_pmu->enable(hwc, idx);
-}
-
-static void metag_pmu_stop(struct perf_event *event, int flags)
-{
-	struct hw_perf_event *hwc = &event->hw;
-
-	/*
-	 * We should always update the counter on stop; see comment above
-	 * why.
-	 */
-	if (!(hwc->state & PERF_HES_STOPPED)) {
-		metag_pmu_event_update(event, hwc, hwc->idx);
-		metag_pmu->disable(hwc, hwc->idx);
-		hwc->state |= PERF_HES_STOPPED | PERF_HES_UPTODATE;
-	}
-}
-
-static int metag_pmu_add(struct perf_event *event, int flags)
-{
-	struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
-	struct hw_perf_event *hwc = &event->hw;
-	int idx = 0, ret = 0;
-
-	perf_pmu_disable(event->pmu);
-
-	/* check whether we're counting instructions */
-	if (hwc->config == 0x100) {
-		if (__test_and_set_bit(METAG_INST_COUNTER,
-				cpuc->used_mask)) {
-			ret = -EAGAIN;
-			goto out;
-		}
-		idx = METAG_INST_COUNTER;
-	} else {
-		/* Check whether we have a spare counter */
-		idx = find_first_zero_bit(cpuc->used_mask,
-				atomic_read(&metag_pmu->active_events));
-		if (idx >= METAG_INST_COUNTER) {
-			ret = -EAGAIN;
-			goto out;
-		}
-
-		__set_bit(idx, cpuc->used_mask);
-	}
-	hwc->idx = idx;
-
-	/* Make sure the counter is disabled */
-	metag_pmu->disable(hwc, idx);
-
-	hwc->state = PERF_HES_STOPPED | PERF_HES_UPTODATE;
-	if (flags & PERF_EF_START)
-		metag_pmu_start(event, PERF_EF_RELOAD);
-
-	perf_event_update_userpage(event);
-out:
-	perf_pmu_enable(event->pmu);
-	return ret;
-}
-
-static void metag_pmu_del(struct perf_event *event, int flags)
-{
-	struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
-	struct hw_perf_event *hwc = &event->hw;
-	int idx = hwc->idx;
-
-	WARN_ON(idx < 0);
-	metag_pmu_stop(event, PERF_EF_UPDATE);
-	cpuc->events[idx] = NULL;
-	__clear_bit(idx, cpuc->used_mask);
-
-	perf_event_update_userpage(event);
-}
-
-static void metag_pmu_read(struct perf_event *event)
-{
-	struct hw_perf_event *hwc = &event->hw;
-
-	/* Don't read disabled counters! */
-	if (hwc->idx < 0)
-		return;
-
-	metag_pmu_event_update(event, hwc, hwc->idx);
-}
-
-static struct pmu pmu = {
-	.pmu_enable	= metag_pmu_enable,
-	.pmu_disable	= metag_pmu_disable,
-
-	.event_init	= metag_pmu_event_init,
-
-	.add		= metag_pmu_add,
-	.del		= metag_pmu_del,
-	.start		= metag_pmu_start,
-	.stop		= metag_pmu_stop,
-	.read		= metag_pmu_read,
-};
-
-/* Core counter specific functions */
-static const int metag_general_events[] = {
-	[PERF_COUNT_HW_CPU_CYCLES] = 0x03,
-	[PERF_COUNT_HW_INSTRUCTIONS] = 0x100,
-	[PERF_COUNT_HW_CACHE_REFERENCES] = -1,
-	[PERF_COUNT_HW_CACHE_MISSES] = -1,
-	[PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = -1,
-	[PERF_COUNT_HW_BRANCH_MISSES] = -1,
-	[PERF_COUNT_HW_BUS_CYCLES] = -1,
-	[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = -1,
-	[PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = -1,
-	[PERF_COUNT_HW_REF_CPU_CYCLES] = -1,
-};
-
-static const int metag_pmu_cache_events[C(MAX)][C(OP_MAX)][C(RESULT_MAX)] = {
-	[C(L1D)] = {
-		[C(OP_READ)] = {
-			[C(RESULT_ACCESS)] = 0x08,
-			[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
-		},
-		[C(OP_WRITE)] = {
-			[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
-			[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
-		},
-		[C(OP_PREFETCH)] = {
-			[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
-			[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
-		},
-	},
-	[C(L1I)] = {
-		[C(OP_READ)] = {
-			[C(RESULT_ACCESS)] = 0x09,
-			[C(RESULT_MISS)] = 0x0a,
-		},
-		[C(OP_WRITE)] = {
-			[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
-			[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
-		},
-		[C(OP_PREFETCH)] = {
-			[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
-			[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
-		},
-	},
-	[C(LL)] = {
-		[C(OP_READ)] = {
-			[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
-			[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
-		},
-		[C(OP_WRITE)] = {
-			[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
-			[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
-		},
-		[C(OP_PREFETCH)] = {
-			[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
-			[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
-		},
-	},
-	[C(DTLB)] = {
-		[C(OP_READ)] = {
-			[C(RESULT_ACCESS)] = 0xd0,
-			[C(RESULT_MISS)] = 0xd2,
-		},
-		[C(OP_WRITE)] = {
-			[C(RESULT_ACCESS)] = 0xd4,
-			[C(RESULT_MISS)] = 0xd5,
-		},
-		[C(OP_PREFETCH)] = {
-			[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
-			[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
-		},
-	},
-	[C(ITLB)] = {
-		[C(OP_READ)] = {
-			[C(RESULT_ACCESS)] = 0xd1,
-			[C(RESULT_MISS)] = 0xd3,
-		},
-		[C(OP_WRITE)] = {
-			[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
-			[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
-		},
-		[C(OP_PREFETCH)] = {
-			[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
-			[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
-		},
-	},
-	[C(BPU)] = {
-		[C(OP_READ)] = {
-			[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
-			[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
-		},
-		[C(OP_WRITE)] = {
-			[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
-			[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
-		},
-		[C(OP_PREFETCH)] = {
-			[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
-			[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
-		},
-	},
-	[C(NODE)] = {
-		[C(OP_READ)] = {
-			[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
-			[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
-		},
-		[C(OP_WRITE)] = {
-			[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
-			[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
-		},
-		[C(OP_PREFETCH)] = {
-			[C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
-			[C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
-		},
-	},
-};
-
-
-static void _hw_perf_event_destroy(struct perf_event *event)
-{
-	atomic_t *active_events = &metag_pmu->active_events;
-	struct mutex *pmu_mutex = &metag_pmu->reserve_mutex;
-
-	if (atomic_dec_and_mutex_lock(active_events, pmu_mutex)) {
-		release_pmu_hardware();
-		mutex_unlock(pmu_mutex);
-	}
-}
-
-static int _hw_perf_cache_event(int config, int *evp)
-{
-	unsigned long type, op, result;
-	int ev;
-
-	if (!metag_pmu->cache_events)
-		return -EINVAL;
-
-	/* Unpack config */
-	type = config & 0xff;
-	op = (config >> 8) & 0xff;
-	result = (config >> 16) & 0xff;
-
-	if (type >= PERF_COUNT_HW_CACHE_MAX ||
-			op >= PERF_COUNT_HW_CACHE_OP_MAX ||
-			result >= PERF_COUNT_HW_CACHE_RESULT_MAX)
-		return -EINVAL;
-
-	ev = (*metag_pmu->cache_events)[type][op][result];
-	if (ev == 0)
-		return -EOPNOTSUPP;
-	if (ev == -1)
-		return -EINVAL;
-	*evp = ev;
-	return 0;
-}
-
-static int _hw_perf_event_init(struct perf_event *event)
-{
-	struct perf_event_attr *attr = &event->attr;
-	struct hw_perf_event *hwc = &event->hw;
-	int mapping = 0, err;
-
-	switch (attr->type) {
-	case PERF_TYPE_HARDWARE:
-		if (attr->config >= PERF_COUNT_HW_MAX)
-			return -EINVAL;
-
-		mapping = metag_pmu->event_map(attr->config);
-		break;
-
-	case PERF_TYPE_HW_CACHE:
-		err = _hw_perf_cache_event(attr->config, &mapping);
-		if (err)
-			return err;
-		break;
-
-	case PERF_TYPE_RAW:
-		mapping = attr->config;
-		break;
-	}
-
-	/* Return early if the event is unsupported */
-	if (mapping == -1)
-		return -EINVAL;
-
-	/*
-	 * Don't assign an index until the event is placed into the hardware.
-	 * -1 signifies that we're still deciding where to put it. On SMP
-	 * systems each core has its own set of counters, so we can't do any
-	 * constraint checking yet.
-	 */
-	hwc->idx = -1;
-
-	/* Store the event encoding */
-	hwc->config |= (unsigned long)mapping;
-
-	/*
-	 * For non-sampling runs, limit the sample_period to half of the
-	 * counter width. This way, the new counter value should be less
-	 * likely to overtake the previous one (unless there are IRQ latency
-	 * issues...)
-	 */
-	if (metag_pmu->max_period) {
-		if (!hwc->sample_period) {
-			hwc->sample_period = metag_pmu->max_period >> 1;
-			hwc->last_period = hwc->sample_period;
-			local64_set(&hwc->period_left, hwc->sample_period);
-		}
-	}
-
-	return 0;
-}
-
-static void metag_pmu_enable_counter(struct hw_perf_event *event, int idx)
-{
-	struct cpu_hw_events *events = this_cpu_ptr(&cpu_hw_events);
-	unsigned int config = event->config;
-	unsigned int tmp = config & 0xf0;
-	unsigned long flags;
-
-	raw_spin_lock_irqsave(&events->pmu_lock, flags);
-
-	/*
-	 * Check if we're enabling the instruction counter (index of
-	 * MAX_HWEVENTS - 1)
-	 */
-	if (METAG_INST_COUNTER == idx) {
-		WARN_ONCE((config != 0x100),
-			"invalid configuration (%d) for counter (%d)\n",
-			config, idx);
-		local64_set(&event->prev_count, __core_reg_get(TXTACTCYC));
-		goto unlock;
-	}
-
-	/* Check for a core internal or performance channel event. */
-	if (tmp) {
-		/* PERF_ICORE/PERF_CHAN only exist since Meta2 */
-#ifdef METAC_2_1
-		void *perf_addr;
-
-		/*
-		 * Anything other than a cycle count will write the low-
-		 * nibble to the correct counter register.
-		 */
-		switch (tmp) {
-		case 0xd0:
-			perf_addr = (void *)PERF_ICORE(idx);
-			break;
-
-		case 0xf0:
-			perf_addr = (void *)PERF_CHAN(idx);
-			break;
-
-		default:
-			perf_addr = NULL;
-			break;
-		}
-
-		if (perf_addr)
-			metag_out32((config & 0x0f), perf_addr);
-#endif
-
-		/*
-		 * Now we use the high nibble as the performance event to
-		 * to count.
-		 */
-		config = tmp >> 4;
-	}
-
-	tmp = ((config & 0xf) << 28) |
-			((1 << 24) << hard_processor_id());
-	if (metag_pmu->max_period)
-		/*
-		 * Cores supporting overflow interrupts may have had the counter
-		 * set to a specific value that needs preserving.
-		 */
-		tmp |= metag_in32(PERF_COUNT(idx)) & 0x00ffffff;
-	else
-		/*
-		 * Older cores reset the counter on write, so prev_count needs
-		 * resetting too so we can calculate a correct delta.
-		 */
-		local64_set(&event->prev_count, 0);
-
-	metag_out32(tmp, PERF_COUNT(idx));
-unlock:
-	raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
-}
-
-static void metag_pmu_disable_counter(struct hw_perf_event *event, int idx)
-{
-	struct cpu_hw_events *events = this_cpu_ptr(&cpu_hw_events);
-	unsigned int tmp = 0;
-	unsigned long flags;
-
-	/*
-	 * The cycle counter can't be disabled per se, as it's a hardware
-	 * thread register which is always counting. We merely return if this
-	 * is the counter we're attempting to disable.
-	 */
-	if (METAG_INST_COUNTER == idx)
-		return;
-
-	/*
-	 * The counter value _should_ have been read prior to disabling,
-	 * as if we're running on an early core then the value gets reset to
-	 * 0, and any read after that would be useless. On the newer cores,
-	 * however, it's better to read-modify-update this for purposes of
-	 * the overflow interrupt.
-	 * Here we remove the thread id AND the event nibble (there are at
-	 * least two events that count events that are core global and ignore
-	 * the thread id mask). This only works because we don't mix thread
-	 * performance counts, and event 0x00 requires a thread id mask!
-	 */
-	raw_spin_lock_irqsave(&events->pmu_lock, flags);
-
-	tmp = metag_in32(PERF_COUNT(idx));
-	tmp &= 0x00ffffff;
-	metag_out32(tmp, PERF_COUNT(idx));
-
-	raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
-}
-
-static u64 metag_pmu_read_counter(int idx)
-{
-	u32 tmp = 0;
-
-	if (METAG_INST_COUNTER == idx) {
-		tmp = __core_reg_get(TXTACTCYC);
-		goto out;
-	}
-
-	tmp = metag_in32(PERF_COUNT(idx)) & 0x00ffffff;
-out:
-	return tmp;
-}
-
-static void metag_pmu_write_counter(int idx, u32 val)
-{
-	struct cpu_hw_events *events = this_cpu_ptr(&cpu_hw_events);
-	u32 tmp = 0;
-	unsigned long flags;
-
-	/*
-	 * This _shouldn't_ happen, but if it does, then we can just
-	 * ignore the write, as the register is read-only and clear-on-write.
-	 */
-	if (METAG_INST_COUNTER == idx)
-		return;
-
-	/*
-	 * We'll keep the thread mask and event id, and just update the
-	 * counter itself. Also , we should bound the value to 24-bits.
-	 */
-	raw_spin_lock_irqsave(&events->pmu_lock, flags);
-
-	val &= 0x00ffffff;
-	tmp = metag_in32(PERF_COUNT(idx)) & 0xff000000;
-	val |= tmp;
-	metag_out32(val, PERF_COUNT(idx));
-
-	raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
-}
-
-static int metag_pmu_event_map(int idx)
-{
-	return metag_general_events[idx];
-}
-
-static irqreturn_t metag_pmu_counter_overflow(int irq, void *dev)
-{
-	int idx = (int)dev;
-	struct cpu_hw_events *cpuhw = this_cpu_ptr(&cpu_hw_events);
-	struct perf_event *event = cpuhw->events[idx];
-	struct hw_perf_event *hwc = &event->hw;
-	struct pt_regs *regs = get_irq_regs();
-	struct perf_sample_data sampledata;
-	unsigned long flags;
-	u32 counter = 0;
-
-	/*
-	 * We need to stop the core temporarily from generating another
-	 * interrupt while we disable this counter. However, we don't want
-	 * to flag the counter as free
-	 */
-	__global_lock2(flags);
-	counter = metag_in32(PERF_COUNT(idx));
-	metag_out32((counter & 0x00ffffff), PERF_COUNT(idx));
-	__global_unlock2(flags);
-
-	/* Update the counts and reset the sample period */
-	metag_pmu_event_update(event, hwc, idx);
-	perf_sample_data_init(&sampledata, 0, hwc->last_period);
-	metag_pmu_event_set_period(event, hwc, idx);
-
-	/*
-	 * Enable the counter again once core overflow processing has
-	 * completed. Note the counter value may have been modified while it was
-	 * inactive to set it up ready for the next interrupt.
-	 */
-	if (!perf_event_overflow(event, &sampledata, regs)) {
-		__global_lock2(flags);
-		counter = (counter & 0xff000000) |
-			  (metag_in32(PERF_COUNT(idx)) & 0x00ffffff);
-		metag_out32(counter, PERF_COUNT(idx));
-		__global_unlock2(flags);
-	}
-
-	return IRQ_HANDLED;
-}
-
-static struct metag_pmu _metag_pmu = {
-	.handle_irq	= metag_pmu_counter_overflow,
-	.enable		= metag_pmu_enable_counter,
-	.disable	= metag_pmu_disable_counter,
-	.read		= metag_pmu_read_counter,
-	.write		= metag_pmu_write_counter,
-	.event_map	= metag_pmu_event_map,
-	.cache_events	= &metag_pmu_cache_events,
-	.max_period	= MAX_PERIOD,
-	.max_events	= MAX_HWEVENTS,
-};
-
-/* PMU CPU hotplug notifier */
-static int metag_pmu_starting_cpu(unsigned int cpu)
-{
-	struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);
-
-	memset(cpuc, 0, sizeof(struct cpu_hw_events));
-	raw_spin_lock_init(&cpuc->pmu_lock);
-
-	return 0;
-}
-
-/* PMU Initialisation */
-static int __init init_hw_perf_events(void)
-{
-	int ret = 0, cpu;
-	u32 version = *(u32 *)METAC_ID;
-	int major = (version & METAC_ID_MAJOR_BITS) >> METAC_ID_MAJOR_S;
-	int min_rev = (version & (METAC_ID_MINOR_BITS | METAC_ID_REV_BITS))
-			>> METAC_ID_REV_S;
-
-	/* Not a Meta 2 core, then not supported */
-	if (0x02 > major) {
-		pr_info("no hardware counter support available\n");
-		goto out;
-	} else if (0x02 == major) {
-		metag_pmu = &_metag_pmu;
-
-		if (min_rev < 0x0104) {
-			/*
-			 * A core without overflow interrupts, and clear-on-
-			 * write counters.
-			 */
-			metag_pmu->handle_irq = NULL;
-			metag_pmu->write = NULL;
-			metag_pmu->max_period = 0;
-		}
-
-		metag_pmu->name = "meta2";
-		metag_pmu->version = version;
-		metag_pmu->pmu = pmu;
-	}
-
-	pr_info("enabled with %s PMU driver, %d counters available\n",
-			metag_pmu->name, metag_pmu->max_events);
-
-	/*
-	 * Early cores have "limited" counters - they have no overflow
-	 * interrupts - and so are unable to do sampling without extra work
-	 * and timer assistance.
-	 */
-	if (metag_pmu->max_period == 0) {
-		metag_pmu->pmu.capabilities |= PERF_PMU_CAP_NO_INTERRUPT;
-	}
-
-	/* Initialise the active events and reservation mutex */
-	atomic_set(&metag_pmu->active_events, 0);
-	mutex_init(&metag_pmu->reserve_mutex);
-
-	/* Clear the counters */
-	metag_out32(0, PERF_COUNT(0));
-	metag_out32(0, PERF_COUNT(1));
-
-	cpuhp_setup_state(CPUHP_AP_PERF_METAG_STARTING,
-			  "perf/metag:starting", metag_pmu_starting_cpu,
-			  NULL);
-
-	ret = perf_pmu_register(&pmu, metag_pmu->name, PERF_TYPE_RAW);
-	if (ret)
-		cpuhp_remove_state_nocalls(CPUHP_AP_PERF_METAG_STARTING);
-	return ret;
-}
-early_initcall(init_hw_perf_events);
diff --git a/arch/metag/kernel/perf/perf_event.h b/arch/metag/kernel/perf/perf_event.h
deleted file mode 100644
index fd10a1345b67..000000000000
--- a/arch/metag/kernel/perf/perf_event.h
+++ /dev/null
@@ -1,106 +0,0 @@
-/*
- * Meta performance counter support.
- *  Copyright (C) 2012 Imagination Technologies Ltd
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- */
-
-#ifndef METAG_PERF_EVENT_H_
-#define METAG_PERF_EVENT_H_
-
-#include <linux/kernel.h>
-#include <linux/interrupt.h>
-#include <linux/perf_event.h>
-
-/* For performance counter definitions */
-#include <asm/metag_mem.h>
-
-/*
- * The Meta core has two performance counters, with 24-bit resolution. Newer
- * cores generate an overflow interrupt on transition from 0xffffff to 0.
- *
- * Each counter consists of the counter id, hardware thread id, and the count
- * itself; each counter can be assigned to multiple hardware threads at any
- * one time, with the returned count being an aggregate of events. A small
- * number of events are thread global, i.e. they count the aggregate of all
- * threads' events, regardless of the thread selected.
- *
- * Newer cores can store an arbitrary 24-bit number in the counter, whereas
- * older cores will clear the counter bits on write.
- *
- * We also have a pseudo-counter in the form of the thread active cycles
- * counter (which, incidentally, is also bound to
- */
-
-#define MAX_HWEVENTS		3
-#define MAX_PERIOD		((1UL << 24) - 1)
-#define METAG_INST_COUNTER	(MAX_HWEVENTS - 1)
-
-/**
- * struct cpu_hw_events - a processor core's performance events
- * @events:	an array of perf_events active for a given index.
- * @used_mask:	a bitmap of in-use counters.
- * @pmu_lock:	a perf counter lock
- *
- * This is a per-cpu/core structure that maintains a record of its
- * performance counters' state.
- */
-struct cpu_hw_events {
-	struct perf_event	*events[MAX_HWEVENTS];
-	unsigned long		used_mask[BITS_TO_LONGS(MAX_HWEVENTS)];
-	raw_spinlock_t		pmu_lock;
-};
-
-/**
- * struct metag_pmu - the Meta PMU structure
- * @pmu:		core pmu structure
- * @name:		pmu name
- * @version:		core version
- * @handle_irq:		overflow interrupt handler
- * @enable:		enable a counter
- * @disable:		disable a counter
- * @read:		read the value of a counter
- * @write:		write a value to a counter
- * @event_map:		kernel event to counter event id map
- * @cache_events:	kernel cache counter to core cache counter map
- * @max_period:		maximum value of the counter before overflow
- * @max_events:		maximum number of counters available at any one time
- * @active_events:	number of active counters
- * @reserve_mutex:	counter reservation mutex
- *
- * This describes the main functionality and data used by the performance
- * event core.
- */
-struct metag_pmu {
-	struct pmu	pmu;
-	const char	*name;
-	u32		version;
-	irqreturn_t	(*handle_irq)(int irq_num, void *dev);
-	void		(*enable)(struct hw_perf_event *evt, int idx);
-	void		(*disable)(struct hw_perf_event *evt, int idx);
-	u64		(*read)(int idx);
-	void		(*write)(int idx, u32 val);
-	int		(*event_map)(int idx);
-	const int	(*cache_events)[PERF_COUNT_HW_CACHE_MAX]
-				[PERF_COUNT_HW_CACHE_OP_MAX]
-				[PERF_COUNT_HW_CACHE_RESULT_MAX];
-	u32		max_period;
-	int		max_events;
-	atomic_t	active_events;
-	struct mutex	reserve_mutex;
-};
-
-/* Convenience macros for accessing the perf counters */
-/* Define some convenience accessors */
-#define PERF_COUNT(x)	(PERF_COUNT0 + (sizeof(u64) * (x)))
-#define PERF_ICORE(x)	(PERF_ICORE0 + (sizeof(u64) * (x)))
-#define PERF_CHAN(x)	(PERF_CHAN0 + (sizeof(u64) * (x)))
-
-/* Cache index macros */
-#define C(x) PERF_COUNT_HW_CACHE_##x
-#define CACHE_OP_UNSUPPORTED	0xfffe
-#define CACHE_OP_NONSENSE	0xffff
-
-#endif
diff --git a/arch/metag/kernel/perf_callchain.c b/arch/metag/kernel/perf_callchain.c
deleted file mode 100644
index d325ba101de0..000000000000
--- a/arch/metag/kernel/perf_callchain.c
+++ /dev/null
@@ -1,97 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Perf callchain handling code.
- *
- *   Based on the ARM perf implementation.
- */
-
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/perf_event.h>
-#include <linux/uaccess.h>
-#include <asm/ptrace.h>
-#include <asm/stacktrace.h>
-
-static bool is_valid_call(unsigned long calladdr)
-{
-	unsigned int callinsn;
-
-	/* Check the possible return address is aligned. */
-	if (!(calladdr & 0x3)) {
-		if (!get_user(callinsn, (unsigned int *)calladdr)) {
-			/* Check for CALLR or SWAP PC,D1RtP. */
-			if ((callinsn & 0xff000000) == 0xab000000 ||
-			    callinsn == 0xa3200aa0)
-				return true;
-		}
-	}
-	return false;
-}
-
-static struct metag_frame __user *
-user_backtrace(struct metag_frame __user *user_frame,
-	       struct perf_callchain_entry_ctx *entry)
-{
-	struct metag_frame frame;
-	unsigned long calladdr;
-
-	/* We cannot rely on having frame pointers in user code. */
-	while (1) {
-		/* Also check accessibility of one struct frame beyond */
-		if (!access_ok(VERIFY_READ, user_frame, sizeof(frame)))
-			return 0;
-		if (__copy_from_user_inatomic(&frame, user_frame,
-					      sizeof(frame)))
-			return 0;
-
-		--user_frame;
-
-		calladdr = frame.lr - 4;
-		if (is_valid_call(calladdr)) {
-			perf_callchain_store(entry, calladdr);
-			return user_frame;
-		}
-	}
-
-	return 0;
-}
-
-void
-perf_callchain_user(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs)
-{
-	unsigned long sp = regs->ctx.AX[0].U0;
-	struct metag_frame __user *frame;
-
-	frame = (struct metag_frame __user *)sp;
-
-	--frame;
-
-	while ((entry->nr < entry->max_stack) && frame)
-		frame = user_backtrace(frame, entry);
-}
-
-/*
- * Gets called by walk_stackframe() for every stackframe. This will be called
- * whist unwinding the stackframe and is like a subroutine return so we use
- * the PC.
- */
-static int
-callchain_trace(struct stackframe *fr,
-		void *data)
-{
-	struct perf_callchain_entry_ctx *entry = data;
-	perf_callchain_store(entry, fr->pc);
-	return 0;
-}
-
-void
-perf_callchain_kernel(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs)
-{
-	struct stackframe fr;
-
-	fr.fp = regs->ctx.AX[1].U0;
-	fr.sp = regs->ctx.AX[0].U0;
-	fr.lr = regs->ctx.DX[4].U1;
-	fr.pc = regs->ctx.CurrPC;
-	walk_stackframe(&fr, callchain_trace, entry);
-}
diff --git a/arch/metag/kernel/process.c b/arch/metag/kernel/process.c
deleted file mode 100644
index 0909834c83a7..000000000000
--- a/arch/metag/kernel/process.c
+++ /dev/null
@@ -1,448 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright (C) 2005,2006,2007,2008,2009,2010,2011 Imagination Technologies
- *
- * This file contains the architecture-dependent parts of process handling.
- *
- */
-
-#include <linux/errno.h>
-#include <linux/export.h>
-#include <linux/sched.h>
-#include <linux/sched/debug.h>
-#include <linux/sched/task.h>
-#include <linux/sched/task_stack.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/unistd.h>
-#include <linux/ptrace.h>
-#include <linux/user.h>
-#include <linux/reboot.h>
-#include <linux/elfcore.h>
-#include <linux/fs.h>
-#include <linux/tick.h>
-#include <linux/slab.h>
-#include <linux/mman.h>
-#include <linux/pm.h>
-#include <linux/syscalls.h>
-#include <linux/uaccess.h>
-#include <linux/smp.h>
-#include <asm/core_reg.h>
-#include <asm/user_gateway.h>
-#include <asm/tcm.h>
-#include <asm/traps.h>
-#include <asm/switch_to.h>
-
-/*
- * Wait for the next interrupt and enable local interrupts
- */
-void arch_cpu_idle(void)
-{
-	int tmp;
-
-	/*
-	 * Quickly jump straight into the interrupt entry point without actually
-	 * triggering an interrupt. When TXSTATI gets read the processor will
-	 * block until an interrupt is triggered.
-	 */
-	asm volatile (/* Switch into ISTAT mode */
-		      "RTH\n\t"
-		      /* Enable local interrupts */
-		      "MOV	TXMASKI, %1\n\t"
-		      /*
-		       * We can't directly "SWAP PC, PCX", so we swap via a
-		       * temporary. Essentially we do:
-		       *  PCX_new = 1f (the place to continue execution)
-		       *  PC = PCX_old
-		       */
-		      "ADD	%0, CPC0, #(1f-.)\n\t"
-		      "SWAP	PCX, %0\n\t"
-		      "MOV	PC, %0\n"
-		      /* Continue execution here with interrupts enabled */
-		      "1:"
-		      : "=a" (tmp)
-		      : "r" (get_trigger_mask()));
-}
-
-#ifdef CONFIG_HOTPLUG_CPU
-void arch_cpu_idle_dead(void)
-{
-	cpu_die();
-}
-#endif
-
-void (*pm_power_off)(void);
-EXPORT_SYMBOL(pm_power_off);
-
-void (*soc_restart)(char *cmd);
-void (*soc_halt)(void);
-
-void machine_restart(char *cmd)
-{
-	if (soc_restart)
-		soc_restart(cmd);
-	hard_processor_halt(HALT_OK);
-}
-
-void machine_halt(void)
-{
-	if (soc_halt)
-		soc_halt();
-	smp_send_stop();
-	hard_processor_halt(HALT_OK);
-}
-
-void machine_power_off(void)
-{
-	if (pm_power_off)
-		pm_power_off();
-	smp_send_stop();
-	hard_processor_halt(HALT_OK);
-}
-
-#define FLAG_Z 0x8
-#define FLAG_N 0x4
-#define FLAG_O 0x2
-#define FLAG_C 0x1
-
-void show_regs(struct pt_regs *regs)
-{
-	int i;
-	const char *AX0_names[] = {"A0StP", "A0FrP"};
-	const char *AX1_names[] = {"A1GbP", "A1LbP"};
-
-	const char *DX0_names[] = {
-		"D0Re0",
-		"D0Ar6",
-		"D0Ar4",
-		"D0Ar2",
-		"D0FrT",
-		"D0.5 ",
-		"D0.6 ",
-		"D0.7 "
-	};
-
-	const char *DX1_names[] = {
-		"D1Re0",
-		"D1Ar5",
-		"D1Ar3",
-		"D1Ar1",
-		"D1RtP",
-		"D1.5 ",
-		"D1.6 ",
-		"D1.7 "
-	};
-
-	show_regs_print_info(KERN_INFO);
-
-	pr_info(" pt_regs @ %p\n", regs);
-	pr_info(" SaveMask = 0x%04hx\n", regs->ctx.SaveMask);
-	pr_info(" Flags = 0x%04hx (%c%c%c%c)\n", regs->ctx.Flags,
-		regs->ctx.Flags & FLAG_Z ? 'Z' : 'z',
-		regs->ctx.Flags & FLAG_N ? 'N' : 'n',
-		regs->ctx.Flags & FLAG_O ? 'O' : 'o',
-		regs->ctx.Flags & FLAG_C ? 'C' : 'c');
-	pr_info(" TXRPT = 0x%08x\n", regs->ctx.CurrRPT);
-	pr_info(" PC = 0x%08x\n", regs->ctx.CurrPC);
-
-	/* AX regs */
-	for (i = 0; i < 2; i++) {
-		pr_info(" %s = 0x%08x    ",
-			AX0_names[i],
-			regs->ctx.AX[i].U0);
-		printk(" %s = 0x%08x\n",
-			AX1_names[i],
-			regs->ctx.AX[i].U1);
-	}
-
-	if (regs->ctx.SaveMask & TBICTX_XEXT_BIT)
-		pr_warn(" Extended state present - AX2.[01] will be WRONG\n");
-
-	/* Special place with AXx.2 */
-	pr_info(" A0.2  = 0x%08x    ",
-		regs->ctx.Ext.AX2.U0);
-	printk(" A1.2  = 0x%08x\n",
-		regs->ctx.Ext.AX2.U1);
-
-	/* 'extended' AX regs (nominally, just AXx.3) */
-	for (i = 0; i < (TBICTX_AX_REGS - 3); i++) {
-		pr_info(" A0.%d  = 0x%08x    ", i + 3, regs->ctx.AX3[i].U0);
-		printk(" A1.%d  = 0x%08x\n", i + 3, regs->ctx.AX3[i].U1);
-	}
-
-	for (i = 0; i < 8; i++) {
-		pr_info(" %s = 0x%08x    ", DX0_names[i], regs->ctx.DX[i].U0);
-		printk(" %s = 0x%08x\n", DX1_names[i], regs->ctx.DX[i].U1);
-	}
-
-	show_trace(NULL, (unsigned long *)regs->ctx.AX[0].U0, regs);
-}
-
-/*
- * Copy architecture-specific thread state
- */
-int copy_thread(unsigned long clone_flags, unsigned long usp,
-		unsigned long kthread_arg, struct task_struct *tsk)
-{
-	struct pt_regs *childregs = task_pt_regs(tsk);
-	void *kernel_context = ((void *) childregs +
-				sizeof(struct pt_regs));
-	unsigned long global_base;
-
-	BUG_ON(((unsigned long)childregs) & 0x7);
-	BUG_ON(((unsigned long)kernel_context) & 0x7);
-
-	memset(&tsk->thread.kernel_context, 0,
-			sizeof(tsk->thread.kernel_context));
-
-	tsk->thread.kernel_context = __TBISwitchInit(kernel_context,
-						     ret_from_fork,
-						     0, 0);
-
-	if (unlikely(tsk->flags & PF_KTHREAD)) {
-		/*
-		 * Make sure we don't leak any kernel data to child's regs
-		 * if kernel thread becomes a userspace thread in the future
-		 */
-		memset(childregs, 0 , sizeof(struct pt_regs));
-
-		global_base = __core_reg_get(A1GbP);
-		childregs->ctx.AX[0].U1 = (unsigned long) global_base;
-		childregs->ctx.AX[0].U0 = (unsigned long) kernel_context;
-		/* Set D1Ar1=kthread_arg and D1RtP=usp (fn) */
-		childregs->ctx.DX[4].U1 = usp;
-		childregs->ctx.DX[3].U1 = kthread_arg;
-		tsk->thread.int_depth = 2;
-		return 0;
-	}
-
-	/*
-	 * Get a pointer to where the new child's register block should have
-	 * been pushed.
-	 * The Meta's stack grows upwards, and the context is the the first
-	 * thing to be pushed by TBX (phew)
-	 */
-	*childregs = *current_pt_regs();
-	/* Set the correct stack for the clone mode */
-	if (usp)
-		childregs->ctx.AX[0].U0 = ALIGN(usp, 8);
-	tsk->thread.int_depth = 1;
-
-	/* set return value for child process */
-	childregs->ctx.DX[0].U0 = 0;
-
-	/* The TLS pointer is passed as an argument to sys_clone. */
-	if (clone_flags & CLONE_SETTLS)
-		tsk->thread.tls_ptr =
-				(__force void __user *)childregs->ctx.DX[1].U1;
-
-#ifdef CONFIG_METAG_FPU
-	if (tsk->thread.fpu_context) {
-		struct meta_fpu_context *ctx;
-
-		ctx = kmemdup(tsk->thread.fpu_context,
-			      sizeof(struct meta_fpu_context), GFP_ATOMIC);
-		tsk->thread.fpu_context = ctx;
-	}
-#endif
-
-#ifdef CONFIG_METAG_DSP
-	if (tsk->thread.dsp_context) {
-		struct meta_ext_context *ctx;
-		int i;
-
-		ctx = kmemdup(tsk->thread.dsp_context,
-			      sizeof(struct meta_ext_context), GFP_ATOMIC);
-		for (i = 0; i < 2; i++)
-			ctx->ram[i] = kmemdup(ctx->ram[i], ctx->ram_sz[i],
-					      GFP_ATOMIC);
-		tsk->thread.dsp_context = ctx;
-	}
-#endif
-
-	return 0;
-}
-
-#ifdef CONFIG_METAG_FPU
-static void alloc_fpu_context(struct thread_struct *thread)
-{
-	thread->fpu_context = kzalloc(sizeof(struct meta_fpu_context),
-				      GFP_ATOMIC);
-}
-
-static void clear_fpu(struct thread_struct *thread)
-{
-	thread->user_flags &= ~TBICTX_FPAC_BIT;
-	kfree(thread->fpu_context);
-	thread->fpu_context = NULL;
-}
-#else
-static void clear_fpu(struct thread_struct *thread)
-{
-}
-#endif
-
-#ifdef CONFIG_METAG_DSP
-static void clear_dsp(struct thread_struct *thread)
-{
-	if (thread->dsp_context) {
-		kfree(thread->dsp_context->ram[0]);
-		kfree(thread->dsp_context->ram[1]);
-
-		kfree(thread->dsp_context);
-
-		thread->dsp_context = NULL;
-	}
-
-	__core_reg_set(D0.8, 0);
-}
-#else
-static void clear_dsp(struct thread_struct *thread)
-{
-}
-#endif
-
-struct task_struct *__sched __switch_to(struct task_struct *prev,
-					struct task_struct *next)
-{
-	TBIRES to, from;
-
-	to.Switch.pCtx = next->thread.kernel_context;
-	to.Switch.pPara = prev;
-
-#ifdef CONFIG_METAG_FPU
-	if (prev->thread.user_flags & TBICTX_FPAC_BIT) {
-		struct pt_regs *regs = task_pt_regs(prev);
-		TBIRES state;
-
-		state.Sig.SaveMask = prev->thread.user_flags;
-		state.Sig.pCtx = &regs->ctx;
-
-		if (!prev->thread.fpu_context)
-			alloc_fpu_context(&prev->thread);
-		if (prev->thread.fpu_context)
-			__TBICtxFPUSave(state, prev->thread.fpu_context);
-	}
-	/*
-	 * Force a restore of the FPU context next time this process is
-	 * scheduled.
-	 */
-	if (prev->thread.fpu_context)
-		prev->thread.fpu_context->needs_restore = true;
-#endif
-
-
-	from = __TBISwitch(to, &prev->thread.kernel_context);
-
-	/* Restore TLS pointer for this process. */
-	set_gateway_tls(current->thread.tls_ptr);
-
-	return (struct task_struct *) from.Switch.pPara;
-}
-
-void flush_thread(void)
-{
-	clear_fpu(&current->thread);
-	clear_dsp(&current->thread);
-}
-
-/*
- * Free current thread data structures etc.
- */
-void exit_thread(struct task_struct *tsk)
-{
-	clear_fpu(&tsk->thread);
-	clear_dsp(&tsk->thread);
-}
-
-/* TODO: figure out how to unwind the kernel stack here to figure out
- * where we went to sleep. */
-unsigned long get_wchan(struct task_struct *p)
-{
-	return 0;
-}
-
-int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpu)
-{
-	/* Returning 0 indicates that the FPU state was not stored (as it was
-	 * not in use) */
-	return 0;
-}
-
-#ifdef CONFIG_METAG_USER_TCM
-
-#define ELF_MIN_ALIGN	PAGE_SIZE
-
-#define ELF_PAGESTART(_v) ((_v) & ~(unsigned long)(ELF_MIN_ALIGN-1))
-#define ELF_PAGEOFFSET(_v) ((_v) & (ELF_MIN_ALIGN-1))
-#define ELF_PAGEALIGN(_v) (((_v) + ELF_MIN_ALIGN - 1) & ~(ELF_MIN_ALIGN - 1))
-
-#define BAD_ADDR(x) ((unsigned long)(x) >= TASK_SIZE)
-
-unsigned long __metag_elf_map(struct file *filep, unsigned long addr,
-			      struct elf_phdr *eppnt, int prot, int type,
-			      unsigned long total_size)
-{
-	unsigned long map_addr, size;
-	unsigned long page_off = ELF_PAGEOFFSET(eppnt->p_vaddr);
-	unsigned long raw_size = eppnt->p_filesz + page_off;
-	unsigned long off = eppnt->p_offset - page_off;
-	unsigned int tcm_tag;
-	addr = ELF_PAGESTART(addr);
-	size = ELF_PAGEALIGN(raw_size);
-
-	/* mmap() will return -EINVAL if given a zero size, but a
-	 * segment with zero filesize is perfectly valid */
-	if (!size)
-		return addr;
-
-	tcm_tag = tcm_lookup_tag(addr);
-
-	if (tcm_tag != TCM_INVALID_TAG)
-		type &= ~MAP_FIXED;
-
-	/*
-	* total_size is the size of the ELF (interpreter) image.
-	* The _first_ mmap needs to know the full size, otherwise
-	* randomization might put this image into an overlapping
-	* position with the ELF binary image. (since size < total_size)
-	* So we first map the 'big' image - and unmap the remainder at
-	* the end. (which unmap is needed for ELF images with holes.)
-	*/
-	if (total_size) {
-		total_size = ELF_PAGEALIGN(total_size);
-		map_addr = vm_mmap(filep, addr, total_size, prot, type, off);
-		if (!BAD_ADDR(map_addr))
-			vm_munmap(map_addr+size, total_size-size);
-	} else
-		map_addr = vm_mmap(filep, addr, size, prot, type, off);
-
-	if (!BAD_ADDR(map_addr) && tcm_tag != TCM_INVALID_TAG) {
-		struct tcm_allocation *tcm;
-		unsigned long tcm_addr;
-
-		tcm = kmalloc(sizeof(*tcm), GFP_KERNEL);
-		if (!tcm)
-			return -ENOMEM;
-
-		tcm_addr = tcm_alloc(tcm_tag, raw_size);
-		if (tcm_addr != addr) {
-			kfree(tcm);
-			return -ENOMEM;
-		}
-
-		tcm->tag = tcm_tag;
-		tcm->addr = tcm_addr;
-		tcm->size = raw_size;
-
-		list_add(&tcm->list, &current->mm->context.tcm);
-
-		eppnt->p_vaddr = map_addr;
-		if (copy_from_user((void *) addr, (void __user *) map_addr,
-				   raw_size))
-			return -EFAULT;
-	}
-
-	return map_addr;
-}
-#endif
diff --git a/arch/metag/kernel/ptrace.c b/arch/metag/kernel/ptrace.c
deleted file mode 100644
index e615603a4b0a..000000000000
--- a/arch/metag/kernel/ptrace.c
+++ /dev/null
@@ -1,427 +0,0 @@
-/*
- *  Copyright (C) 2005-2012 Imagination Technologies Ltd.
- *
- * This file is subject to the terms and conditions of the GNU General
- * Public License.  See the file COPYING in the main directory of
- * this archive for more details.
- */
-
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/errno.h>
-#include <linux/ptrace.h>
-#include <linux/user.h>
-#include <linux/regset.h>
-#include <linux/tracehook.h>
-#include <linux/elf.h>
-#include <linux/uaccess.h>
-#include <linux/sched/task_stack.h>
-
-#include <trace/syscall.h>
-
-#define CREATE_TRACE_POINTS
-#include <trace/events/syscalls.h>
-
-/*
- * user_regset definitions.
- */
-
-static unsigned long user_txstatus(const struct pt_regs *regs)
-{
-	unsigned long data = (unsigned long)regs->ctx.Flags;
-
-	if (regs->ctx.SaveMask & TBICTX_CBUF_BIT)
-		data |= USER_GP_REGS_STATUS_CATCH_BIT;
-
-	return data;
-}
-
-int metag_gp_regs_copyout(const struct pt_regs *regs,
-			  unsigned int pos, unsigned int count,
-			  void *kbuf, void __user *ubuf)
-{
-	const void *ptr;
-	unsigned long data;
-	int ret;
-
-	/* D{0-1}.{0-7} */
-	ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
-				  regs->ctx.DX, 0, 4*16);
-	if (ret)
-		goto out;
-	/* A{0-1}.{0-1} */
-	ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
-				  regs->ctx.AX, 4*16, 4*20);
-	if (ret)
-		goto out;
-	/* A{0-1}.2 */
-	if (regs->ctx.SaveMask & TBICTX_XEXT_BIT)
-		ptr = regs->ctx.Ext.Ctx.pExt;
-	else
-		ptr = &regs->ctx.Ext.AX2;
-	ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
-				  ptr, 4*20, 4*22);
-	if (ret)
-		goto out;
-	/* A{0-1}.3 */
-	ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
-				  &regs->ctx.AX3, 4*22, 4*24);
-	if (ret)
-		goto out;
-	/* PC */
-	ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
-				  &regs->ctx.CurrPC, 4*24, 4*25);
-	if (ret)
-		goto out;
-	/* TXSTATUS */
-	data = user_txstatus(regs);
-	ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
-				  &data, 4*25, 4*26);
-	if (ret)
-		goto out;
-	/* TXRPT, TXBPOBITS, TXMODE */
-	ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
-				  &regs->ctx.CurrRPT, 4*26, 4*29);
-	if (ret)
-		goto out;
-	/* Padding */
-	ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
-				       4*29, 4*30);
-out:
-	return ret;
-}
-
-int metag_gp_regs_copyin(struct pt_regs *regs,
-			 unsigned int pos, unsigned int count,
-			 const void *kbuf, const void __user *ubuf)
-{
-	void *ptr;
-	unsigned long data;
-	int ret;
-
-	/* D{0-1}.{0-7} */
-	ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
-				 regs->ctx.DX, 0, 4*16);
-	if (ret)
-		goto out;
-	/* A{0-1}.{0-1} */
-	ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
-				 regs->ctx.AX, 4*16, 4*20);
-	if (ret)
-		goto out;
-	/* A{0-1}.2 */
-	if (regs->ctx.SaveMask & TBICTX_XEXT_BIT)
-		ptr = regs->ctx.Ext.Ctx.pExt;
-	else
-		ptr = &regs->ctx.Ext.AX2;
-	ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
-				 ptr, 4*20, 4*22);
-	if (ret)
-		goto out;
-	/* A{0-1}.3 */
-	ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
-				 &regs->ctx.AX3, 4*22, 4*24);
-	if (ret)
-		goto out;
-	/* PC */
-	ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
-				 &regs->ctx.CurrPC, 4*24, 4*25);
-	if (ret)
-		goto out;
-	/* TXSTATUS */
-	data = user_txstatus(regs);
-	ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
-				 &data, 4*25, 4*26);
-	if (ret)
-		goto out;
-	regs->ctx.Flags = data & 0xffff;
-	if (data & USER_GP_REGS_STATUS_CATCH_BIT)
-		regs->ctx.SaveMask |= TBICTX_XCBF_BIT | TBICTX_CBUF_BIT;
-	else
-		regs->ctx.SaveMask &= ~TBICTX_CBUF_BIT;
-	/* TXRPT, TXBPOBITS, TXMODE */
-	ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
-				 &regs->ctx.CurrRPT, 4*26, 4*29);
-out:
-	return ret;
-}
-
-static int metag_gp_regs_get(struct task_struct *target,
-			     const struct user_regset *regset,
-			     unsigned int pos, unsigned int count,
-			     void *kbuf, void __user *ubuf)
-{
-	const struct pt_regs *regs = task_pt_regs(target);
-	return metag_gp_regs_copyout(regs, pos, count, kbuf, ubuf);
-}
-
-static int metag_gp_regs_set(struct task_struct *target,
-			     const struct user_regset *regset,
-			     unsigned int pos, unsigned int count,
-			     const void *kbuf, const void __user *ubuf)
-{
-	struct pt_regs *regs = task_pt_regs(target);
-	return metag_gp_regs_copyin(regs, pos, count, kbuf, ubuf);
-}
-
-int metag_cb_regs_copyout(const struct pt_regs *regs,
-			  unsigned int pos, unsigned int count,
-			  void *kbuf, void __user *ubuf)
-{
-	int ret;
-
-	/* TXCATCH{0-3} */
-	if (regs->ctx.SaveMask & TBICTX_XCBF_BIT)
-		ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
-					  regs->extcb0, 0, 4*4);
-	else
-		ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
-					       0, 4*4);
-	return ret;
-}
-
-int metag_cb_regs_copyin(struct pt_regs *regs,
-			 unsigned int pos, unsigned int count,
-			 const void *kbuf, const void __user *ubuf)
-{
-	int ret;
-
-	/* TXCATCH{0-3} */
-	ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
-				 regs->extcb0, 0, 4*4);
-	return ret;
-}
-
-static int metag_cb_regs_get(struct task_struct *target,
-			     const struct user_regset *regset,
-			     unsigned int pos, unsigned int count,
-			     void *kbuf, void __user *ubuf)
-{
-	const struct pt_regs *regs = task_pt_regs(target);
-	return metag_cb_regs_copyout(regs, pos, count, kbuf, ubuf);
-}
-
-static int metag_cb_regs_set(struct task_struct *target,
-			     const struct user_regset *regset,
-			     unsigned int pos, unsigned int count,
-			     const void *kbuf, const void __user *ubuf)
-{
-	struct pt_regs *regs = task_pt_regs(target);
-	return metag_cb_regs_copyin(regs, pos, count, kbuf, ubuf);
-}
-
-int metag_rp_state_copyout(const struct pt_regs *regs,
-			   unsigned int pos, unsigned int count,
-			   void *kbuf, void __user *ubuf)
-{
-	unsigned long mask;
-	u64 *ptr;
-	int ret, i;
-
-	/* Empty read pipeline */
-	if (!(regs->ctx.SaveMask & TBICTX_CBRP_BIT)) {
-		ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
-					       0, 4*13);
-		goto out;
-	}
-
-	mask = (regs->ctx.CurrDIVTIME & TXDIVTIME_RPMASK_BITS) >>
-		TXDIVTIME_RPMASK_S;
-
-	/* Read pipeline entries */
-	ptr = (void *)&regs->extcb0[1];
-	for (i = 0; i < 6; ++i, ++ptr) {
-		if (mask & (1 << i))
-			ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
-						  ptr, 8*i, 8*(i + 1));
-		else
-			ret = user_regset_copyout_zero(&pos, &count, &kbuf,
-						       &ubuf, 8*i, 8*(i + 1));
-		if (ret)
-			goto out;
-	}
-	/* Mask of entries */
-	ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
-				  &mask, 4*12, 4*13);
-out:
-	return ret;
-}
-
-int metag_rp_state_copyin(struct pt_regs *regs,
-			  unsigned int pos, unsigned int count,
-			  const void *kbuf, const void __user *ubuf)
-{
-	struct user_rp_state rp;
-	unsigned long long *ptr;
-	int ret, i;
-
-	if (count < 4*13)
-		return -EINVAL;
-	/* Read the entire pipeline before making any changes */
-	ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
-				 &rp, 0, 4*13);
-	if (ret)
-		goto out;
-
-	/* Write pipeline entries */
-	ptr = (void *)&regs->extcb0[1];
-	for (i = 0; i < 6; ++i, ++ptr)
-		if (rp.mask & (1 << i))
-			*ptr = rp.entries[i];
-
-	/* Update RPMask in TXDIVTIME */
-	regs->ctx.CurrDIVTIME &= ~TXDIVTIME_RPMASK_BITS;
-	regs->ctx.CurrDIVTIME |= (rp.mask << TXDIVTIME_RPMASK_S)
-				 & TXDIVTIME_RPMASK_BITS;
-
-	/* Set/clear flags to indicate catch/read pipeline state */
-	if (rp.mask)
-		regs->ctx.SaveMask |= TBICTX_XCBF_BIT | TBICTX_CBRP_BIT;
-	else
-		regs->ctx.SaveMask &= ~TBICTX_CBRP_BIT;
-out:
-	return ret;
-}
-
-static int metag_rp_state_get(struct task_struct *target,
-			      const struct user_regset *regset,
-			      unsigned int pos, unsigned int count,
-			      void *kbuf, void __user *ubuf)
-{
-	const struct pt_regs *regs = task_pt_regs(target);
-	return metag_rp_state_copyout(regs, pos, count, kbuf, ubuf);
-}
-
-static int metag_rp_state_set(struct task_struct *target,
-			      const struct user_regset *regset,
-			      unsigned int pos, unsigned int count,
-			      const void *kbuf, const void __user *ubuf)
-{
-	struct pt_regs *regs = task_pt_regs(target);
-	return metag_rp_state_copyin(regs, pos, count, kbuf, ubuf);
-}
-
-static int metag_tls_get(struct task_struct *target,
-			const struct user_regset *regset,
-			unsigned int pos, unsigned int count,
-			void *kbuf, void __user *ubuf)
-{
-	void __user *tls = target->thread.tls_ptr;
-	return user_regset_copyout(&pos, &count, &kbuf, &ubuf, &tls, 0, -1);
-}
-
-static int metag_tls_set(struct task_struct *target,
-			const struct user_regset *regset,
-			unsigned int pos, unsigned int count,
-			const void *kbuf, const void __user *ubuf)
-{
-	int ret;
-	void __user *tls = target->thread.tls_ptr;
-
-	ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, &tls, 0, -1);
-	if (ret)
-		return ret;
-
-	target->thread.tls_ptr = tls;
-	return ret;
-}
-
-enum metag_regset {
-	REGSET_GENERAL,
-	REGSET_CBUF,
-	REGSET_READPIPE,
-	REGSET_TLS,
-};
-
-static const struct user_regset metag_regsets[] = {
-	[REGSET_GENERAL] = {
-		.core_note_type = NT_PRSTATUS,
-		.n = ELF_NGREG,
-		.size = sizeof(long),
-		.align = sizeof(long long),
-		.get = metag_gp_regs_get,
-		.set = metag_gp_regs_set,
-	},
-	[REGSET_CBUF] = {
-		.core_note_type = NT_METAG_CBUF,
-		.n = sizeof(struct user_cb_regs) / sizeof(long),
-		.size = sizeof(long),
-		.align = sizeof(long long),
-		.get = metag_cb_regs_get,
-		.set = metag_cb_regs_set,
-	},
-	[REGSET_READPIPE] = {
-		.core_note_type = NT_METAG_RPIPE,
-		.n = sizeof(struct user_rp_state) / sizeof(long),
-		.size = sizeof(long),
-		.align = sizeof(long long),
-		.get = metag_rp_state_get,
-		.set = metag_rp_state_set,
-	},
-	[REGSET_TLS] = {
-		.core_note_type = NT_METAG_TLS,
-		.n = 1,
-		.size = sizeof(void *),
-		.align = sizeof(void *),
-		.get = metag_tls_get,
-		.set = metag_tls_set,
-	},
-};
-
-static const struct user_regset_view user_metag_view = {
-	.name = "metag",
-	.e_machine = EM_METAG,
-	.regsets = metag_regsets,
-	.n = ARRAY_SIZE(metag_regsets)
-};
-
-const struct user_regset_view *task_user_regset_view(struct task_struct *task)
-{
-	return &user_metag_view;
-}
-
-/*
- * Called by kernel/ptrace.c when detaching..
- *
- * Make sure single step bits etc are not set.
- */
-void ptrace_disable(struct task_struct *child)
-{
-	/* nothing to do.. */
-}
-
-long arch_ptrace(struct task_struct *child, long request, unsigned long addr,
-		 unsigned long data)
-{
-	int ret;
-
-	switch (request) {
-	default:
-		ret = ptrace_request(child, request, addr, data);
-		break;
-	}
-
-	return ret;
-}
-
-int syscall_trace_enter(struct pt_regs *regs)
-{
-	int ret = 0;
-
-	if (test_thread_flag(TIF_SYSCALL_TRACE))
-		ret = tracehook_report_syscall_entry(regs);
-
-	if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
-		trace_sys_enter(regs, regs->ctx.DX[0].U1);
-
-	return ret ? -1 : regs->ctx.DX[0].U1;
-}
-
-void syscall_trace_leave(struct pt_regs *regs)
-{
-	if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
-		trace_sys_exit(regs, regs->ctx.DX[0].U1);
-
-	if (test_thread_flag(TIF_SYSCALL_TRACE))
-		tracehook_report_syscall_exit(regs, 0);
-}
diff --git a/arch/metag/kernel/setup.c b/arch/metag/kernel/setup.c
deleted file mode 100644
index 1166f1fbfd63..000000000000
--- a/arch/metag/kernel/setup.c
+++ /dev/null
@@ -1,622 +0,0 @@
-/*
- * Copyright (C) 2005-2012 Imagination Technologies Ltd.
- *
- * This file contains the architecture-dependant parts of system setup.
- *
- */
-
-#include <linux/export.h>
-#include <linux/bootmem.h>
-#include <linux/console.h>
-#include <linux/cpu.h>
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/fs.h>
-#include <linux/genhd.h>
-#include <linux/init.h>
-#include <linux/initrd.h>
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/memblock.h>
-#include <linux/mm.h>
-#include <linux/of_fdt.h>
-#include <linux/pfn.h>
-#include <linux/root_dev.h>
-#include <linux/sched.h>
-#include <linux/seq_file.h>
-#include <linux/start_kernel.h>
-#include <linux/string.h>
-
-#include <asm/cachepart.h>
-#include <asm/clock.h>
-#include <asm/core_reg.h>
-#include <asm/cpu.h>
-#include <asm/da.h>
-#include <asm/highmem.h>
-#include <asm/hwthread.h>
-#include <asm/l2cache.h>
-#include <asm/mach/arch.h>
-#include <asm/metag_mem.h>
-#include <asm/metag_regs.h>
-#include <asm/mmu.h>
-#include <asm/mmzone.h>
-#include <asm/processor.h>
-#include <asm/sections.h>
-#include <asm/setup.h>
-#include <asm/traps.h>
-
-/* Priv protect as many registers as possible. */
-#define DEFAULT_PRIV	(TXPRIVEXT_COPRO_BITS		| \
-			 TXPRIVEXT_TXTRIGGER_BIT	| \
-			 TXPRIVEXT_TXGBLCREG_BIT	| \
-			 TXPRIVEXT_ILOCK_BIT		| \
-			 TXPRIVEXT_TXITACCYC_BIT	| \
-			 TXPRIVEXT_TXDIVTIME_BIT	| \
-			 TXPRIVEXT_TXAMAREGX_BIT	| \
-			 TXPRIVEXT_TXTIMERI_BIT		| \
-			 TXPRIVEXT_TXSTATUS_BIT		| \
-			 TXPRIVEXT_TXDISABLE_BIT)
-
-/* Meta2 specific bits. */
-#ifdef CONFIG_METAG_META12
-#define META2_PRIV	0
-#else
-#define META2_PRIV	(TXPRIVEXT_TXTIMER_BIT		| \
-			 TXPRIVEXT_TRACE_BIT)
-#endif
-
-/* Unaligned access checking bits. */
-#ifdef CONFIG_METAG_UNALIGNED
-#define UNALIGNED_PRIV	TXPRIVEXT_ALIGNREW_BIT
-#else
-#define UNALIGNED_PRIV	0
-#endif
-
-#define PRIV_BITS 	(DEFAULT_PRIV			| \
-			 META2_PRIV			| \
-			 UNALIGNED_PRIV)
-
-/*
- * Protect access to:
- * 0x06000000-0x07ffffff Direct mapped region
- * 0x05000000-0x05ffffff MMU table region (Meta1)
- * 0x04400000-0x047fffff Cache flush region
- * 0x84000000-0x87ffffff Core cache memory region (Meta2)
- *
- * Allow access to:
- * 0x80000000-0x81ffffff Core code memory region (Meta2)
- */
-#ifdef CONFIG_METAG_META12
-#define PRIVSYSR_BITS	TXPRIVSYSR_ALL_BITS
-#else
-#define PRIVSYSR_BITS	(TXPRIVSYSR_ALL_BITS & ~TXPRIVSYSR_CORECODE_BIT)
-#endif
-
-/* Protect all 0x02xxxxxx and 0x048xxxxx. */
-#define PIOREG_BITS	0xffffffff
-
-/*
- * Protect all 0x04000xx0 (system events)
- * except write combiner flush and write fence (system events 4 and 5).
- */
-#define PSYREG_BITS	0xfffffffb
-
-
-extern char _heap_start[];
-
-#ifdef CONFIG_DA_CONSOLE
-/* Our early channel based console driver */
-extern struct console dash_console;
-#endif
-
-const struct machine_desc *machine_desc __initdata;
-
-/*
- * Map a Linux CPU number to a hardware thread ID
- * In SMP this will be setup with the correct mapping at startup; in UP this
- * will map to the HW thread on which we are running.
- */
-u8 cpu_2_hwthread_id[NR_CPUS] __read_mostly = {
-	[0 ... NR_CPUS-1] = BAD_HWTHREAD_ID
-};
-EXPORT_SYMBOL_GPL(cpu_2_hwthread_id);
-
-/*
- * Map a hardware thread ID to a Linux CPU number
- * In SMP this will be fleshed out with the correct CPU ID for a particular
- * hardware thread. In UP this will be initialised with the boot CPU ID.
- */
-u8 hwthread_id_2_cpu[4] __read_mostly = {
-	[0 ... 3] = BAD_CPU_ID
-};
-
-/* The relative offset of the MMU mapped memory (from ldlk or bootloader)
- * to the real physical memory.  This is needed as we have to use the
- * physical addresses in the MMU tables (pte entries), and not the virtual
- * addresses.
- * This variable is used in the __pa() and __va() macros, and should
- * probably only be used via them.
- */
-unsigned int meta_memoffset;
-EXPORT_SYMBOL(meta_memoffset);
-
-static char __initdata *original_cmd_line;
-
-DEFINE_PER_CPU(PTBI, pTBI);
-
-/*
- * Mapping are specified as "CPU_ID:HWTHREAD_ID", e.g.
- *
- *	"hwthread_map=0:1,1:2,2:3,3:0"
- *
- *	Linux CPU ID	HWTHREAD_ID
- *	---------------------------
- *	    0		      1
- *	    1		      2
- *	    2		      3
- *	    3		      0
- */
-static int __init parse_hwthread_map(char *p)
-{
-	int cpu;
-
-	while (*p) {
-		cpu = (*p++) - '0';
-		if (cpu < 0 || cpu > 9)
-			goto err_cpu;
-
-		p++;		/* skip semi-colon */
-		cpu_2_hwthread_id[cpu] = (*p++) - '0';
-		if (cpu_2_hwthread_id[cpu] >= 4)
-			goto err_thread;
-		hwthread_id_2_cpu[cpu_2_hwthread_id[cpu]] = cpu;
-
-		if (*p == ',')
-			p++;		/* skip comma */
-	}
-
-	return 0;
-err_cpu:
-	pr_err("%s: hwthread_map cpu argument out of range\n", __func__);
-	return -EINVAL;
-err_thread:
-	pr_err("%s: hwthread_map thread argument out of range\n", __func__);
-	return -EINVAL;
-}
-early_param("hwthread_map", parse_hwthread_map);
-
-void __init dump_machine_table(void)
-{
-	struct machine_desc *p;
-	const char **compat;
-
-	pr_info("Available machine support:\n\tNAME\t\tCOMPATIBLE LIST\n");
-	for_each_machine_desc(p) {
-		pr_info("\t%s\t[", p->name);
-		for (compat = p->dt_compat; compat && *compat; ++compat)
-			printk(" '%s'", *compat);
-		printk(" ]\n");
-	}
-
-	pr_info("\nPlease check your kernel config and/or bootloader.\n");
-
-	hard_processor_halt(HALT_PANIC);
-}
-
-#ifdef CONFIG_METAG_HALT_ON_PANIC
-static int metag_panic_event(struct notifier_block *this, unsigned long event,
-			     void *ptr)
-{
-	hard_processor_halt(HALT_PANIC);
-	return NOTIFY_DONE;
-}
-
-static struct notifier_block metag_panic_block = {
-	metag_panic_event,
-	NULL,
-	0
-};
-#endif
-
-void __init setup_arch(char **cmdline_p)
-{
-	unsigned long start_pfn;
-	unsigned long text_start = (unsigned long)(&_stext);
-	unsigned long cpu = smp_processor_id();
-	unsigned long heap_start, heap_end;
-	unsigned long start_pte;
-	PTBI _pTBI;
-	PTBISEG p_heap;
-	int heap_id, i;
-
-	metag_cache_probe();
-
-	metag_da_probe();
-#ifdef CONFIG_DA_CONSOLE
-	if (metag_da_enabled()) {
-		/* An early channel based console driver */
-		register_console(&dash_console);
-		add_preferred_console("ttyDA", 1, NULL);
-	}
-#endif
-
-	/* try interpreting the argument as a device tree */
-	machine_desc = setup_machine_fdt(original_cmd_line);
-	/* if it doesn't look like a device tree it must be a command line */
-	if (!machine_desc) {
-#ifdef CONFIG_METAG_BUILTIN_DTB
-		/* try the embedded device tree */
-		machine_desc = setup_machine_fdt(__dtb_start);
-		if (!machine_desc)
-			panic("Invalid embedded device tree.");
-#else
-		/* use the default machine description */
-		machine_desc = default_machine_desc();
-#endif
-#ifndef CONFIG_CMDLINE_FORCE
-		/* append the bootloader cmdline to any builtin fdt cmdline */
-		if (boot_command_line[0] && original_cmd_line[0])
-			strlcat(boot_command_line, " ", COMMAND_LINE_SIZE);
-		strlcat(boot_command_line, original_cmd_line,
-			COMMAND_LINE_SIZE);
-#endif
-	}
-	setup_meta_clocks(machine_desc->clocks);
-
-	*cmdline_p = boot_command_line;
-	parse_early_param();
-
-	/*
-	 * Make sure we don't alias in dcache or icache
-	 */
-	check_for_cache_aliasing(cpu);
-
-
-#ifdef CONFIG_METAG_HALT_ON_PANIC
-	atomic_notifier_chain_register(&panic_notifier_list,
-				       &metag_panic_block);
-#endif
-
-#ifdef CONFIG_DUMMY_CONSOLE
-	conswitchp = &dummy_con;
-#endif
-
-	if (!(__core_reg_get(TXSTATUS) & TXSTATUS_PSTAT_BIT))
-		panic("Privilege must be enabled for this thread.");
-
-	_pTBI = __TBI(TBID_ISTAT_BIT);
-
-	per_cpu(pTBI, cpu) = _pTBI;
-
-	if (!per_cpu(pTBI, cpu))
-		panic("No TBI found!");
-
-	/*
-	 * Initialize all interrupt vectors to our copy of __TBIUnExpXXX,
-	 * rather than the version from the bootloader. This makes call
-	 * stacks easier to understand and may allow us to unmap the
-	 * bootloader at some point.
-	 */
-	for (i = 0; i <= TBID_SIGNUM_MAX; i++)
-		_pTBI->fnSigs[i] = __TBIUnExpXXX;
-
-	/* A Meta requirement is that the kernel is loaded (virtually)
-	 * at the PAGE_OFFSET.
-	 */
-	if (PAGE_OFFSET != text_start)
-		panic("Kernel not loaded at PAGE_OFFSET (%#x) but at %#lx.",
-		      PAGE_OFFSET, text_start);
-
-	start_pte = mmu_read_second_level_page(text_start);
-
-	/*
-	 * Kernel pages should have the PRIV bit set by the bootloader.
-	 */
-	if (!(start_pte & _PAGE_KERNEL))
-		panic("kernel pte does not have PRIV set");
-
-	/*
-	 * See __pa and __va in include/asm/page.h.
-	 * This value is negative when running in local space but the
-	 * calculations work anyway.
-	 */
-	meta_memoffset = text_start - (start_pte & PAGE_MASK);
-
-	/* Now lets look at the heap space */
-	heap_id = (__TBIThreadId() & TBID_THREAD_BITS)
-		+ TBID_SEG(0, TBID_SEGSCOPE_LOCAL, TBID_SEGTYPE_HEAP);
-
-	p_heap = __TBIFindSeg(NULL, heap_id);
-
-	if (!p_heap)
-		panic("Could not find heap from TBI!");
-
-	/* The heap begins at the first full page after the kernel data. */
-	heap_start = (unsigned long) &_heap_start;
-
-	/* The heap ends at the end of the heap segment specified with
-	 * ldlk.
-	 */
-	if (is_global_space(text_start)) {
-		pr_debug("WARNING: running in global space!\n");
-		heap_end = (unsigned long)p_heap->pGAddr + p_heap->Bytes;
-	} else {
-		heap_end = (unsigned long)p_heap->pLAddr + p_heap->Bytes;
-	}
-
-	ROOT_DEV = Root_RAM0;
-
-	/* init_mm is the mm struct used for the first task.  It is then
-	 * cloned for all other tasks spawned from that task.
-	 *
-	 * Note - we are using the virtual addresses here.
-	 */
-	init_mm.start_code = (unsigned long)(&_stext);
-	init_mm.end_code = (unsigned long)(&_etext);
-	init_mm.end_data = (unsigned long)(&_edata);
-	init_mm.brk = (unsigned long)heap_start;
-
-	min_low_pfn = PFN_UP(__pa(text_start));
-	max_low_pfn = PFN_DOWN(__pa(heap_end));
-
-	pfn_base = min_low_pfn;
-
-	/* Round max_pfn up to a 4Mb boundary. The free_bootmem_node()
-	 * call later makes sure to keep the rounded up pages marked reserved.
-	 */
-	max_pfn = max_low_pfn + ((1 << MAX_ORDER) - 1);
-	max_pfn &= ~((1 << MAX_ORDER) - 1);
-
-	start_pfn = PFN_UP(__pa(heap_start));
-
-	if (min_low_pfn & ((1 << MAX_ORDER) - 1)) {
-		/* Theoretically, we could expand the space that the
-		 * bootmem allocator covers - much as we do for the
-		 * 'high' address, and then tell the bootmem system
-		 * that the lowest chunk is 'not available'.  Right
-		 * now it is just much easier to constrain the
-		 * user to always MAX_ORDER align their kernel space.
-		 */
-
-		panic("Kernel must be %d byte aligned, currently at %#lx.",
-		      1 << (MAX_ORDER + PAGE_SHIFT),
-		      min_low_pfn << PAGE_SHIFT);
-	}
-
-#ifdef CONFIG_HIGHMEM
-	highstart_pfn = highend_pfn = max_pfn;
-	high_memory = (void *) __va(PFN_PHYS(highstart_pfn));
-#else
-	high_memory = (void *)__va(PFN_PHYS(max_pfn));
-#endif
-
-	paging_init(heap_end);
-
-	setup_priv();
-
-	/* Setup the boot cpu's mapping. The rest will be setup below. */
-	cpu_2_hwthread_id[smp_processor_id()] = hard_processor_id();
-	hwthread_id_2_cpu[hard_processor_id()] = smp_processor_id();
-
-	unflatten_and_copy_device_tree();
-
-#ifdef CONFIG_SMP
-	smp_init_cpus();
-#endif
-
-	if (machine_desc->init_early)
-		machine_desc->init_early();
-}
-
-static int __init customize_machine(void)
-{
-	/* customizes platform devices, or adds new ones */
-	if (machine_desc->init_machine)
-		machine_desc->init_machine();
-
-	return 0;
-}
-arch_initcall(customize_machine);
-
-static int __init init_machine_late(void)
-{
-	if (machine_desc->init_late)
-		machine_desc->init_late();
-	return 0;
-}
-late_initcall(init_machine_late);
-
-#ifdef CONFIG_PROC_FS
-/*
- *	Get CPU information for use by the procfs.
- */
-static const char *get_cpu_capabilities(unsigned int txenable)
-{
-#ifdef CONFIG_METAG_META21
-	/* See CORE_ID in META HTP.GP TRM - Architecture Overview 2.1.238 */
-	int coreid = metag_in32(METAC_CORE_ID);
-	unsigned int dsp_type = (coreid >> 3) & 7;
-	unsigned int fpu_type = (coreid >> 7) & 3;
-
-	switch (dsp_type | fpu_type << 3) {
-	case (0x00): return "EDSP";
-	case (0x01): return "DSP";
-	case (0x08): return "EDSP+LFPU";
-	case (0x09): return "DSP+LFPU";
-	case (0x10): return "EDSP+FPU";
-	case (0x11): return "DSP+FPU";
-	}
-	return "UNKNOWN";
-
-#else
-	if (!(txenable & TXENABLE_CLASS_BITS))
-		return "DSP";
-	else
-		return "";
-#endif
-}
-
-static int show_cpuinfo(struct seq_file *m, void *v)
-{
-	const char *cpu;
-	unsigned int txenable, thread_id, major, minor;
-	unsigned long clockfreq = get_coreclock();
-#ifdef CONFIG_SMP
-	int i;
-	unsigned long lpj;
-#endif
-
-	cpu = "META";
-
-	txenable = __core_reg_get(TXENABLE);
-	major = (txenable & TXENABLE_MAJOR_REV_BITS) >> TXENABLE_MAJOR_REV_S;
-	minor = (txenable & TXENABLE_MINOR_REV_BITS) >> TXENABLE_MINOR_REV_S;
-	thread_id = (txenable >> 8) & 0x3;
-
-#ifdef CONFIG_SMP
-	for_each_online_cpu(i) {
-		lpj = per_cpu(cpu_data, i).loops_per_jiffy;
-		txenable = core_reg_read(TXUCT_ID, TXENABLE_REGNUM,
-							cpu_2_hwthread_id[i]);
-
-		seq_printf(m, "CPU:\t\t%s %d.%d (thread %d)\n"
-			      "Clocking:\t%lu.%1luMHz\n"
-			      "BogoMips:\t%lu.%02lu\n"
-			      "Calibration:\t%lu loops\n"
-			      "Capabilities:\t%s\n\n",
-			      cpu, major, minor, i,
-			      clockfreq / 1000000, (clockfreq / 100000) % 10,
-			      lpj / (500000 / HZ), (lpj / (5000 / HZ)) % 100,
-			      lpj,
-			      get_cpu_capabilities(txenable));
-	}
-#else
-	seq_printf(m, "CPU:\t\t%s %d.%d (thread %d)\n"
-		   "Clocking:\t%lu.%1luMHz\n"
-		   "BogoMips:\t%lu.%02lu\n"
-		   "Calibration:\t%lu loops\n"
-		   "Capabilities:\t%s\n",
-		   cpu, major, minor, thread_id,
-		   clockfreq / 1000000, (clockfreq / 100000) % 10,
-		   loops_per_jiffy / (500000 / HZ),
-		   (loops_per_jiffy / (5000 / HZ)) % 100,
-		   loops_per_jiffy,
-		   get_cpu_capabilities(txenable));
-#endif /* CONFIG_SMP */
-
-#ifdef CONFIG_METAG_L2C
-	if (meta_l2c_is_present()) {
-		seq_printf(m, "L2 cache:\t%s\n"
-			      "L2 cache size:\t%d KB\n",
-			      meta_l2c_is_enabled() ? "enabled" : "disabled",
-			      meta_l2c_size() >> 10);
-	}
-#endif
-	return 0;
-}
-
-static void *c_start(struct seq_file *m, loff_t *pos)
-{
-	return (void *)(*pos == 0);
-}
-static void *c_next(struct seq_file *m, void *v, loff_t *pos)
-{
-	return NULL;
-}
-static void c_stop(struct seq_file *m, void *v)
-{
-}
-const struct seq_operations cpuinfo_op = {
-	.start = c_start,
-	.next  = c_next,
-	.stop  = c_stop,
-	.show  = show_cpuinfo,
-};
-#endif /* CONFIG_PROC_FS */
-
-void __init metag_start_kernel(char *args)
-{
-	/* Zero the timer register so timestamps are from the point at
-	 * which the kernel started running.
-	 */
-	__core_reg_set(TXTIMER, 0);
-
-	/* Clear the bss. */
-	memset(__bss_start, 0,
-	       (unsigned long)__bss_stop - (unsigned long)__bss_start);
-
-	/* Remember where these are for use in setup_arch */
-	original_cmd_line = args;
-
-	current_thread_info()->cpu = hard_processor_id();
-
-	start_kernel();
-}
-
-/**
- * setup_priv() - Set up privilege protection registers.
- *
- * Set up privilege protection registers such as TXPRIVEXT to prevent userland
- * from touching our precious registers and sensitive memory areas.
- */
-void setup_priv(void)
-{
-	unsigned int offset = hard_processor_id() << TXPRIVREG_STRIDE_S;
-
-	__core_reg_set(TXPRIVEXT, PRIV_BITS);
-
-	metag_out32(PRIVSYSR_BITS, T0PRIVSYSR + offset);
-	metag_out32(PIOREG_BITS,   T0PIOREG   + offset);
-	metag_out32(PSYREG_BITS,   T0PSYREG   + offset);
-}
-
-PTBI pTBI_get(unsigned int cpu)
-{
-	return per_cpu(pTBI, cpu);
-}
-EXPORT_SYMBOL(pTBI_get);
-
-#if defined(CONFIG_METAG_DSP) && defined(CONFIG_METAG_FPU)
-static char capabilities[] = "dsp fpu";
-#elif defined(CONFIG_METAG_DSP)
-static char capabilities[] = "dsp";
-#elif defined(CONFIG_METAG_FPU)
-static char capabilities[] = "fpu";
-#else
-static char capabilities[] = "";
-#endif
-
-static struct ctl_table caps_kern_table[] = {
-	{
-		.procname	= "capabilities",
-		.data		= capabilities,
-		.maxlen		= sizeof(capabilities),
-		.mode		= 0444,
-		.proc_handler	= proc_dostring,
-	},
-	{}
-};
-
-static struct ctl_table caps_root_table[] = {
-	{
-		.procname	= "kernel",
-		.mode		= 0555,
-		.child		= caps_kern_table,
-	},
-	{}
-};
-
-static int __init capabilities_register_sysctl(void)
-{
-	struct ctl_table_header *caps_table_header;
-
-	caps_table_header = register_sysctl_table(caps_root_table);
-	if (!caps_table_header) {
-		pr_err("Unable to register CAPABILITIES sysctl\n");
-		return -ENOMEM;
-	}
-
-	return 0;
-}
-
-core_initcall(capabilities_register_sysctl);
diff --git a/arch/metag/kernel/signal.c b/arch/metag/kernel/signal.c
deleted file mode 100644
index e64e8b0a9363..000000000000
--- a/arch/metag/kernel/signal.c
+++ /dev/null
@@ -1,336 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- *  Copyright (C) 1991,1992  Linus Torvalds
- *  Copyright (C) 2005-2012  Imagination Technologies Ltd.
- *
- *  1997-11-28  Modified for POSIX.1b signals by Richard Henderson
- *
- */
-
-#include <linux/sched.h>
-#include <linux/sched/task_stack.h>
-#include <linux/mm.h>
-#include <linux/smp.h>
-#include <linux/kernel.h>
-#include <linux/signal.h>
-#include <linux/errno.h>
-#include <linux/wait.h>
-#include <linux/ptrace.h>
-#include <linux/unistd.h>
-#include <linux/stddef.h>
-#include <linux/personality.h>
-#include <linux/uaccess.h>
-#include <linux/tracehook.h>
-
-#include <asm/ucontext.h>
-#include <asm/cacheflush.h>
-#include <asm/switch.h>
-#include <asm/syscall.h>
-#include <asm/syscalls.h>
-
-#define REG_FLAGS	ctx.SaveMask
-#define REG_RETVAL	ctx.DX[0].U0
-#define REG_SYSCALL	ctx.DX[0].U1
-#define REG_SP		ctx.AX[0].U0
-#define REG_ARG1	ctx.DX[3].U1
-#define REG_ARG2	ctx.DX[3].U0
-#define REG_ARG3	ctx.DX[2].U1
-#define REG_PC		ctx.CurrPC
-#define REG_RTP		ctx.DX[4].U1
-
-struct rt_sigframe {
-	struct siginfo info;
-	struct ucontext uc;
-	unsigned long retcode[2];
-};
-
-static int restore_sigcontext(struct pt_regs *regs,
-			      struct sigcontext __user *sc)
-{
-	int err;
-
-	/* Always make any pending restarted system calls return -EINTR */
-	current->restart_block.fn = do_no_restart_syscall;
-
-	err = metag_gp_regs_copyin(regs, 0, sizeof(struct user_gp_regs), NULL,
-				   &sc->regs);
-	if (!err)
-		err = metag_cb_regs_copyin(regs, 0,
-					   sizeof(struct user_cb_regs), NULL,
-					   &sc->cb);
-	if (!err)
-		err = metag_rp_state_copyin(regs, 0,
-					    sizeof(struct user_rp_state), NULL,
-					    &sc->rp);
-
-	/* This is a user-mode context. */
-	regs->REG_FLAGS |= TBICTX_PRIV_BIT;
-
-	return err;
-}
-
-long sys_rt_sigreturn(void)
-{
-	/* NOTE - Meta stack goes UPWARDS - so we wind the stack back */
-	struct pt_regs *regs = current_pt_regs();
-	struct rt_sigframe __user *frame;
-	sigset_t set;
-
-	frame = (__force struct rt_sigframe __user *)(regs->REG_SP -
-						      sizeof(*frame));
-
-	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
-		goto badframe;
-
-	if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
-		goto badframe;
-
-	set_current_blocked(&set);
-
-	if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
-		goto badframe;
-
-	if (restore_altstack(&frame->uc.uc_stack))
-		goto badframe;
-
-	return regs->REG_RETVAL;
-
-badframe:
-	force_sig(SIGSEGV, current);
-
-	return 0;
-}
-
-static int setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs,
-			    unsigned long mask)
-{
-	int err;
-
-	err = metag_gp_regs_copyout(regs, 0, sizeof(struct user_gp_regs), NULL,
-				    &sc->regs);
-
-	if (!err)
-		err = metag_cb_regs_copyout(regs, 0,
-					    sizeof(struct user_cb_regs), NULL,
-					    &sc->cb);
-	if (!err)
-		err = metag_rp_state_copyout(regs, 0,
-					     sizeof(struct user_rp_state), NULL,
-					     &sc->rp);
-
-	/* OK, clear that cbuf flag in the old context, or our stored
-	 * catch buffer will be restored when we go to call the signal
-	 * handler. Also clear out the CBRP RA/RD pipe bit incase
-	 * that is pending as well!
-	 * Note that as we have already stored this context, these
-	 * flags will get restored on sigreturn to their original
-	 * state.
-	 */
-	regs->REG_FLAGS &= ~(TBICTX_XCBF_BIT | TBICTX_CBUF_BIT |
-			     TBICTX_CBRP_BIT);
-
-	/* Clear out the LSM_STEP bits in case we are in the middle of
-	 * and MSET/MGET.
-	 */
-	regs->ctx.Flags &= ~TXSTATUS_LSM_STEP_BITS;
-
-	err |= __put_user(mask, &sc->oldmask);
-
-	return err;
-}
-
-/*
- * Determine which stack to use..
- */
-static void __user *get_sigframe(struct ksignal *ksig, unsigned long sp)
-{
-	sp = sigsp(sp, ksig);
-	sp = (sp + 7) & ~7;			/* 8byte align stack */
-
-	return (void __user *)sp;
-}
-
-static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
-			  struct pt_regs *regs)
-{
-	struct rt_sigframe __user *frame;
-	int err;
-	unsigned long code;
-
-	frame = get_sigframe(ksig, regs->REG_SP);
-	if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
-		return -EFAULT;
-
-	err = copy_siginfo_to_user(&frame->info, &ksig->info);
-
-	/* Create the ucontext.  */
-	err |= __put_user(0, &frame->uc.uc_flags);
-	err |= __put_user(0, (unsigned long __user *)&frame->uc.uc_link);
-	err |= __save_altstack(&frame->uc.uc_stack, regs->REG_SP);
-	err |= setup_sigcontext(&frame->uc.uc_mcontext,
-				regs, set->sig[0]);
-	err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
-
-	if (err)
-		return -EFAULT;
-
-	/* Set up to return from userspace.  */
-
-	/* MOV D1Re0 (D1.0), #__NR_rt_sigreturn */
-	code = 0x03000004 | (__NR_rt_sigreturn << 3);
-	err |= __put_user(code, (unsigned long __user *)(&frame->retcode[0]));
-
-	/* SWITCH #__METAG_SW_SYS */
-	code = __METAG_SW_ENCODING(SYS);
-	err |= __put_user(code, (unsigned long __user *)(&frame->retcode[1]));
-
-	if (err)
-		return -EFAULT;
-
-	/* Set up registers for signal handler */
-	regs->REG_RTP = (unsigned long) frame->retcode;
-	regs->REG_SP = (unsigned long) frame + sizeof(*frame);
-	regs->REG_ARG1 = ksig->sig;
-	regs->REG_ARG2 = (unsigned long) &frame->info;
-	regs->REG_ARG3 = (unsigned long) &frame->uc;
-	regs->REG_PC = (unsigned long) ksig->ka.sa.sa_handler;
-
-	pr_debug("SIG deliver (%s:%d): sp=%p pc=%08x pr=%08x\n",
-		 current->comm, current->pid, frame, regs->REG_PC,
-		 regs->REG_RTP);
-
-	/* Now pass size of 'new code' into sigtramp so we can do a more
-	 * effective cache flush - directed rather than 'full flush'.
-	 */
-	flush_cache_sigtramp(regs->REG_RTP, sizeof(frame->retcode));
-
-	return 0;
-}
-
-static void handle_signal(struct ksignal *ksig, struct pt_regs *regs)
-{
-	sigset_t *oldset = sigmask_to_save();
-	int ret;
-
-	/* Set up the stack frame */
-	ret = setup_rt_frame(ksig, oldset, regs);
-
-	signal_setup_done(ret, ksig, test_thread_flag(TIF_SINGLESTEP));
-}
-
- /*
-  * Notes for Meta.
-  * We have moved from the old 2.4.9 SH way of using syscall_nr (in the stored
-  * context) to passing in the syscall flag on the stack.
-  * This is because having syscall_nr in our context does not fit with TBX, and
-  * corrupted the stack.
-  */
-static int do_signal(struct pt_regs *regs, int syscall)
-{
-	unsigned int retval = 0, continue_addr = 0, restart_addr = 0;
-	int restart = 0;
-	struct ksignal ksig;
-
-	/*
-	 * By the end of rt_sigreturn the context describes the point that the
-	 * signal was taken (which may happen to be just before a syscall if
-	 * it's already been restarted). This should *never* be mistaken for a
-	 * system call in need of restarting.
-	 */
-	if (syscall == __NR_rt_sigreturn)
-		syscall = -1;
-
-	/* Did we come from a system call? */
-	if (syscall >= 0) {
-		continue_addr = regs->REG_PC;
-		restart_addr = continue_addr - 4;
-		retval = regs->REG_RETVAL;
-
-		/*
-		 * Prepare for system call restart. We do this here so that a
-		 * debugger will see the already changed PC.
-		 */
-		switch (retval) {
-		case -ERESTART_RESTARTBLOCK:
-			restart = -2;
-		case -ERESTARTNOHAND:
-		case -ERESTARTSYS:
-		case -ERESTARTNOINTR:
-			++restart;
-			regs->REG_PC = restart_addr;
-			break;
-		}
-	}
-
-	/*
-	 * Get the signal to deliver. When running under ptrace, at this point
-	 * the debugger may change all our registers ...
-	 */
-	get_signal(&ksig);
-
-	/*
-	 * Depending on the signal settings we may need to revert the decision
-	 * to restart the system call. But skip this if a debugger has chosen to
-	 * restart at a different PC.
-	 */
-	if (regs->REG_PC != restart_addr)
-		restart = 0;
-	if (ksig.sig > 0) {
-		if (unlikely(restart)) {
-			if (retval == -ERESTARTNOHAND
-			    || retval == -ERESTART_RESTARTBLOCK
-			    || (retval == -ERESTARTSYS
-				&& !(ksig.ka.sa.sa_flags & SA_RESTART))) {
-				regs->REG_RETVAL = -EINTR;
-				regs->REG_PC = continue_addr;
-			}
-		}
-
-		/* Whee! Actually deliver the signal.  */
-		handle_signal(&ksig, regs);
-		return 0;
-	}
-
-	/* Handlerless -ERESTART_RESTARTBLOCK re-enters via restart_syscall */
-	if (unlikely(restart < 0))
-		regs->REG_SYSCALL = __NR_restart_syscall;
-
-	/*
-	 * If there's no signal to deliver, we just put the saved sigmask back.
-	 */
-	restore_saved_sigmask();
-
-	return restart;
-}
-
-int do_work_pending(struct pt_regs *regs, unsigned int thread_flags,
-		    int syscall)
-{
-	do {
-		if (likely(thread_flags & _TIF_NEED_RESCHED)) {
-			schedule();
-		} else {
-			if (unlikely(!user_mode(regs)))
-				return 0;
-			local_irq_enable();
-			if (thread_flags & _TIF_SIGPENDING) {
-				int restart = do_signal(regs, syscall);
-				if (unlikely(restart)) {
-					/*
-					 * Restart without handlers.
-					 * Deal with it without leaving
-					 * the kernel space.
-					 */
-					return restart;
-				}
-				syscall = -1;
-			} else {
-				clear_thread_flag(TIF_NOTIFY_RESUME);
-				tracehook_notify_resume(regs);
-			}
-		}
-		local_irq_disable();
-		thread_flags = current_thread_info()->flags;
-	} while (thread_flags & _TIF_WORK_MASK);
-	return 0;
-}
diff --git a/arch/metag/kernel/smp.c b/arch/metag/kernel/smp.c
deleted file mode 100644
index 2dbbb7c66043..000000000000
--- a/arch/metag/kernel/smp.c
+++ /dev/null
@@ -1,668 +0,0 @@
-/*
- *  Copyright (C) 2009,2010,2011 Imagination Technologies Ltd.
- *
- *  Copyright (C) 2002 ARM Limited, All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/atomic.h>
-#include <linux/completion.h>
-#include <linux/delay.h>
-#include <linux/init.h>
-#include <linux/spinlock.h>
-#include <linux/sched/mm.h>
-#include <linux/sched/hotplug.h>
-#include <linux/sched/task_stack.h>
-#include <linux/interrupt.h>
-#include <linux/cache.h>
-#include <linux/profile.h>
-#include <linux/errno.h>
-#include <linux/mm.h>
-#include <linux/err.h>
-#include <linux/cpu.h>
-#include <linux/smp.h>
-#include <linux/seq_file.h>
-#include <linux/irq.h>
-#include <linux/bootmem.h>
-
-#include <asm/cacheflush.h>
-#include <asm/cachepart.h>
-#include <asm/core_reg.h>
-#include <asm/cpu.h>
-#include <asm/global_lock.h>
-#include <asm/metag_mem.h>
-#include <asm/mmu_context.h>
-#include <asm/pgtable.h>
-#include <asm/pgalloc.h>
-#include <asm/processor.h>
-#include <asm/setup.h>
-#include <asm/tlbflush.h>
-#include <asm/hwthread.h>
-#include <asm/traps.h>
-
-#define SYSC_DCPART(n)	(SYSC_DCPART0 + SYSC_xCPARTn_STRIDE * (n))
-#define SYSC_ICPART(n)	(SYSC_ICPART0 + SYSC_xCPARTn_STRIDE * (n))
-
-DECLARE_PER_CPU(PTBI, pTBI);
-
-void *secondary_data_stack;
-
-/*
- * structures for inter-processor calls
- * - A collection of single bit ipi messages.
- */
-struct ipi_data {
-	spinlock_t lock;
-	unsigned long ipi_count;
-	unsigned long bits;
-};
-
-static DEFINE_PER_CPU(struct ipi_data, ipi_data) = {
-	.lock	= __SPIN_LOCK_UNLOCKED(ipi_data.lock),
-};
-
-static DEFINE_SPINLOCK(boot_lock);
-
-static DECLARE_COMPLETION(cpu_running);
-
-/*
- * "thread" is assumed to be a valid Meta hardware thread ID.
- */
-static int boot_secondary(unsigned int thread, struct task_struct *idle)
-{
-	u32 val;
-
-	/*
-	 * set synchronisation state between this boot processor
-	 * and the secondary one
-	 */
-	spin_lock(&boot_lock);
-
-	core_reg_write(TXUPC_ID, 0, thread, (unsigned int)secondary_startup);
-	core_reg_write(TXUPC_ID, 1, thread, 0);
-
-	/*
-	 * Give the thread privilege (PSTAT) and clear potentially problematic
-	 * bits in the process (namely ISTAT, CBMarker, CBMarkerI, LSM_STEP).
-	 */
-	core_reg_write(TXUCT_ID, TXSTATUS_REGNUM, thread, TXSTATUS_PSTAT_BIT);
-
-	/* Clear the minim enable bit. */
-	val = core_reg_read(TXUCT_ID, TXPRIVEXT_REGNUM, thread);
-	core_reg_write(TXUCT_ID, TXPRIVEXT_REGNUM, thread, val & ~0x80);
-
-	/*
-	 * set the ThreadEnable bit (0x1) in the TXENABLE register
-	 * for the specified thread - off it goes!
-	 */
-	val = core_reg_read(TXUCT_ID, TXENABLE_REGNUM, thread);
-	core_reg_write(TXUCT_ID, TXENABLE_REGNUM, thread, val | 0x1);
-
-	/*
-	 * now the secondary core is starting up let it run its
-	 * calibrations, then wait for it to finish
-	 */
-	spin_unlock(&boot_lock);
-
-	return 0;
-}
-
-/**
- * describe_cachepart_change: describe a change to cache partitions.
- * @thread:	Hardware thread number.
- * @label:	Label of cache type, e.g. "dcache" or "icache".
- * @sz:		Total size of the cache.
- * @old:	Old cache partition configuration (*CPART* register).
- * @new:	New cache partition configuration (*CPART* register).
- *
- * If the cache partition has changed, prints a message to the log describing
- * those changes.
- */
-static void describe_cachepart_change(unsigned int thread, const char *label,
-				      unsigned int sz, unsigned int old,
-				      unsigned int new)
-{
-	unsigned int lor1, land1, gor1, gand1;
-	unsigned int lor2, land2, gor2, gand2;
-	unsigned int diff = old ^ new;
-
-	if (!diff)
-		return;
-
-	pr_info("Thread %d: %s partition changed:", thread, label);
-	if (diff & (SYSC_xCPARTL_OR_BITS | SYSC_xCPARTL_AND_BITS)) {
-		lor1   = (old & SYSC_xCPARTL_OR_BITS)  >> SYSC_xCPARTL_OR_S;
-		lor2   = (new & SYSC_xCPARTL_OR_BITS)  >> SYSC_xCPARTL_OR_S;
-		land1  = (old & SYSC_xCPARTL_AND_BITS) >> SYSC_xCPARTL_AND_S;
-		land2  = (new & SYSC_xCPARTL_AND_BITS) >> SYSC_xCPARTL_AND_S;
-		pr_cont(" L:%#x+%#x->%#x+%#x",
-			(lor1 * sz) >> 4,
-			((land1 + 1) * sz) >> 4,
-			(lor2 * sz) >> 4,
-			((land2 + 1) * sz) >> 4);
-	}
-	if (diff & (SYSC_xCPARTG_OR_BITS | SYSC_xCPARTG_AND_BITS)) {
-		gor1   = (old & SYSC_xCPARTG_OR_BITS)  >> SYSC_xCPARTG_OR_S;
-		gor2   = (new & SYSC_xCPARTG_OR_BITS)  >> SYSC_xCPARTG_OR_S;
-		gand1  = (old & SYSC_xCPARTG_AND_BITS) >> SYSC_xCPARTG_AND_S;
-		gand2  = (new & SYSC_xCPARTG_AND_BITS) >> SYSC_xCPARTG_AND_S;
-		pr_cont(" G:%#x+%#x->%#x+%#x",
-			(gor1 * sz) >> 4,
-			((gand1 + 1) * sz) >> 4,
-			(gor2 * sz) >> 4,
-			((gand2 + 1) * sz) >> 4);
-	}
-	if (diff & SYSC_CWRMODE_BIT)
-		pr_cont(" %sWR",
-			(new & SYSC_CWRMODE_BIT) ? "+" : "-");
-	if (diff & SYSC_DCPART_GCON_BIT)
-		pr_cont(" %sGCOn",
-			(new & SYSC_DCPART_GCON_BIT) ? "+" : "-");
-	pr_cont("\n");
-}
-
-/**
- * setup_smp_cache: ensure cache coherency for new SMP thread.
- * @thread:	New hardware thread number.
- *
- * Ensures that coherency is enabled and that the threads share the same cache
- * partitions.
- */
-static void setup_smp_cache(unsigned int thread)
-{
-	unsigned int this_thread, lflags;
-	unsigned int dcsz, dcpart_this, dcpart_old, dcpart_new;
-	unsigned int icsz, icpart_old, icpart_new;
-
-	/*
-	 * Copy over the current thread's cache partition configuration to the
-	 * new thread so that they share cache partitions.
-	 */
-	__global_lock2(lflags);
-	this_thread = hard_processor_id();
-	/* Share dcache partition */
-	dcpart_this = metag_in32(SYSC_DCPART(this_thread));
-	dcpart_old = metag_in32(SYSC_DCPART(thread));
-	dcpart_new = dcpart_this;
-#if PAGE_OFFSET < LINGLOBAL_BASE
-	/*
-	 * For the local data cache to be coherent the threads must also have
-	 * GCOn enabled.
-	 */
-	dcpart_new |= SYSC_DCPART_GCON_BIT;
-	metag_out32(dcpart_new, SYSC_DCPART(this_thread));
-#endif
-	metag_out32(dcpart_new, SYSC_DCPART(thread));
-	/* Share icache partition too */
-	icpart_new = metag_in32(SYSC_ICPART(this_thread));
-	icpart_old = metag_in32(SYSC_ICPART(thread));
-	metag_out32(icpart_new, SYSC_ICPART(thread));
-	__global_unlock2(lflags);
-
-	/*
-	 * Log if the cache partitions were altered so the user is aware of any
-	 * potential unintentional cache wastage.
-	 */
-	dcsz = get_dcache_size();
-	icsz = get_dcache_size();
-	describe_cachepart_change(this_thread, "dcache", dcsz,
-				  dcpart_this, dcpart_new);
-	describe_cachepart_change(thread, "dcache", dcsz,
-				  dcpart_old, dcpart_new);
-	describe_cachepart_change(thread, "icache", icsz,
-				  icpart_old, icpart_new);
-}
-
-int __cpu_up(unsigned int cpu, struct task_struct *idle)
-{
-	unsigned int thread = cpu_2_hwthread_id[cpu];
-	int ret;
-
-	load_pgd(swapper_pg_dir, thread);
-
-	flush_tlb_all();
-
-	setup_smp_cache(thread);
-
-	/*
-	 * Tell the secondary CPU where to find its idle thread's stack.
-	 */
-	secondary_data_stack = task_stack_page(idle);
-
-	wmb();
-
-	/*
-	 * Now bring the CPU into our world.
-	 */
-	ret = boot_secondary(thread, idle);
-	if (ret == 0) {
-		/*
-		 * CPU was successfully started, wait for it
-		 * to come online or time out.
-		 */
-		wait_for_completion_timeout(&cpu_running,
-					    msecs_to_jiffies(1000));
-
-		if (!cpu_online(cpu))
-			ret = -EIO;
-	}
-
-	secondary_data_stack = NULL;
-
-	if (ret) {
-		pr_crit("CPU%u: processor failed to boot\n", cpu);
-
-		/*
-		 * FIXME: We need to clean up the new idle thread. --rmk
-		 */
-	}
-
-	return ret;
-}
-
-#ifdef CONFIG_HOTPLUG_CPU
-
-/*
- * __cpu_disable runs on the processor to be shutdown.
- */
-int __cpu_disable(void)
-{
-	unsigned int cpu = smp_processor_id();
-
-	/*
-	 * Take this CPU offline.  Once we clear this, we can't return,
-	 * and we must not schedule until we're ready to give up the cpu.
-	 */
-	set_cpu_online(cpu, false);
-
-	/*
-	 * OK - migrate IRQs away from this CPU
-	 */
-	migrate_irqs();
-
-	/*
-	 * Flush user cache and TLB mappings, and then remove this CPU
-	 * from the vm mask set of all processes.
-	 */
-	flush_cache_all();
-	local_flush_tlb_all();
-
-	clear_tasks_mm_cpumask(cpu);
-
-	return 0;
-}
-
-/*
- * called on the thread which is asking for a CPU to be shutdown -
- * waits until shutdown has completed, or it is timed out.
- */
-void __cpu_die(unsigned int cpu)
-{
-	if (!cpu_wait_death(cpu, 1))
-		pr_err("CPU%u: unable to kill\n", cpu);
-}
-
-/*
- * Called from the idle thread for the CPU which has been shutdown.
- *
- * Note that we do not return from this function. If this cpu is
- * brought online again it will need to run secondary_startup().
- */
-void cpu_die(void)
-{
-	local_irq_disable();
-	idle_task_exit();
-	irq_ctx_exit(smp_processor_id());
-
-	(void)cpu_report_death();
-
-	asm ("XOR	TXENABLE, D0Re0,D0Re0\n");
-}
-#endif /* CONFIG_HOTPLUG_CPU */
-
-/*
- * Called by both boot and secondaries to move global data into
- * per-processor storage.
- */
-void smp_store_cpu_info(unsigned int cpuid)
-{
-	struct cpuinfo_metag *cpu_info = &per_cpu(cpu_data, cpuid);
-
-	cpu_info->loops_per_jiffy = loops_per_jiffy;
-}
-
-/*
- * This is the secondary CPU boot entry.  We're using this CPUs
- * idle thread stack and the global page tables.
- */
-asmlinkage void secondary_start_kernel(void)
-{
-	struct mm_struct *mm = &init_mm;
-	unsigned int cpu = smp_processor_id();
-
-	/*
-	 * All kernel threads share the same mm context; grab a
-	 * reference and switch to it.
-	 */
-	mmget(mm);
-	mmgrab(mm);
-	current->active_mm = mm;
-	cpumask_set_cpu(cpu, mm_cpumask(mm));
-	enter_lazy_tlb(mm, current);
-	local_flush_tlb_all();
-
-	/*
-	 * TODO: Some day it might be useful for each Linux CPU to
-	 * have its own TBI structure. That would allow each Linux CPU
-	 * to run different interrupt handlers for the same IRQ
-	 * number.
-	 *
-	 * For now, simply copying the pointer to the boot CPU's TBI
-	 * structure is sufficient because we always want to run the
-	 * same interrupt handler whatever CPU takes the interrupt.
-	 */
-	per_cpu(pTBI, cpu) = __TBI(TBID_ISTAT_BIT);
-
-	if (!per_cpu(pTBI, cpu))
-		panic("No TBI found!");
-
-	per_cpu_trap_init(cpu);
-	irq_ctx_init(cpu);
-
-	preempt_disable();
-
-	setup_priv();
-
-	notify_cpu_starting(cpu);
-
-	pr_info("CPU%u (thread %u): Booted secondary processor\n",
-		cpu, cpu_2_hwthread_id[cpu]);
-
-	calibrate_delay();
-	smp_store_cpu_info(cpu);
-
-	/*
-	 * OK, now it's safe to let the boot CPU continue
-	 */
-	set_cpu_online(cpu, true);
-	complete(&cpu_running);
-
-	/*
-	 * Enable local interrupts.
-	 */
-	tbi_startup_interrupt(TBID_SIGNUM_TRT);
-	local_irq_enable();
-
-	/*
-	 * OK, it's off to the idle thread for us
-	 */
-	cpu_startup_entry(CPUHP_AP_ONLINE_IDLE);
-}
-
-void __init smp_cpus_done(unsigned int max_cpus)
-{
-	int cpu;
-	unsigned long bogosum = 0;
-
-	for_each_online_cpu(cpu)
-		bogosum += per_cpu(cpu_data, cpu).loops_per_jiffy;
-
-	pr_info("SMP: Total of %d processors activated (%lu.%02lu BogoMIPS).\n",
-		num_online_cpus(),
-		bogosum / (500000/HZ),
-		(bogosum / (5000/HZ)) % 100);
-}
-
-void __init smp_prepare_cpus(unsigned int max_cpus)
-{
-	unsigned int cpu = smp_processor_id();
-
-	init_new_context(current, &init_mm);
-	current_thread_info()->cpu = cpu;
-
-	smp_store_cpu_info(cpu);
-	init_cpu_present(cpu_possible_mask);
-}
-
-void __init smp_prepare_boot_cpu(void)
-{
-	unsigned int cpu = smp_processor_id();
-
-	per_cpu(pTBI, cpu) = __TBI(TBID_ISTAT_BIT);
-
-	if (!per_cpu(pTBI, cpu))
-		panic("No TBI found!");
-}
-
-static void smp_cross_call(cpumask_t callmap, enum ipi_msg_type msg);
-
-static void send_ipi_message(const struct cpumask *mask, enum ipi_msg_type msg)
-{
-	unsigned long flags;
-	unsigned int cpu;
-	cpumask_t map;
-
-	cpumask_clear(&map);
-	local_irq_save(flags);
-
-	for_each_cpu(cpu, mask) {
-		struct ipi_data *ipi = &per_cpu(ipi_data, cpu);
-
-		spin_lock(&ipi->lock);
-
-		/*
-		 * KICK interrupts are queued in hardware so we'll get
-		 * multiple interrupts if we call smp_cross_call()
-		 * multiple times for one msg. The problem is that we
-		 * only have one bit for each message - we can't queue
-		 * them in software.
-		 *
-		 * The first time through ipi_handler() we'll clear
-		 * the msg bit, having done all the work. But when we
-		 * return we'll get _another_ interrupt (and another,
-		 * and another until we've handled all the queued
-		 * KICKs). Running ipi_handler() when there's no work
-		 * to do is bad because that's how kick handler
-		 * chaining detects who the KICK was intended for.
-		 * See arch/metag/kernel/kick.c for more details.
-		 *
-		 * So only add 'cpu' to 'map' if we haven't already
-		 * queued a KICK interrupt for 'msg'.
-		 */
-		if (!(ipi->bits & (1 << msg))) {
-			ipi->bits |= 1 << msg;
-			cpumask_set_cpu(cpu, &map);
-		}
-
-		spin_unlock(&ipi->lock);
-	}
-
-	/*
-	 * Call the platform specific cross-CPU call function.
-	 */
-	smp_cross_call(map, msg);
-
-	local_irq_restore(flags);
-}
-
-void arch_send_call_function_ipi_mask(const struct cpumask *mask)
-{
-	send_ipi_message(mask, IPI_CALL_FUNC);
-}
-
-void arch_send_call_function_single_ipi(int cpu)
-{
-	send_ipi_message(cpumask_of(cpu), IPI_CALL_FUNC);
-}
-
-void show_ipi_list(struct seq_file *p)
-{
-	unsigned int cpu;
-
-	seq_puts(p, "IPI:");
-
-	for_each_present_cpu(cpu)
-		seq_printf(p, " %10lu", per_cpu(ipi_data, cpu).ipi_count);
-
-	seq_putc(p, '\n');
-}
-
-static DEFINE_SPINLOCK(stop_lock);
-
-/*
- * Main handler for inter-processor interrupts
- *
- * For Meta, the ipimask now only identifies a single
- * category of IPI (Bit 1 IPIs have been replaced by a
- * different mechanism):
- *
- *  Bit 0 - Inter-processor function call
- */
-static int do_IPI(void)
-{
-	unsigned int cpu = smp_processor_id();
-	struct ipi_data *ipi = &per_cpu(ipi_data, cpu);
-	unsigned long msgs, nextmsg;
-	int handled = 0;
-
-	ipi->ipi_count++;
-
-	spin_lock(&ipi->lock);
-	msgs = ipi->bits;
-	nextmsg = msgs & -msgs;
-	ipi->bits &= ~nextmsg;
-	spin_unlock(&ipi->lock);
-
-	if (nextmsg) {
-		handled = 1;
-
-		nextmsg = ffz(~nextmsg);
-		switch (nextmsg) {
-		case IPI_RESCHEDULE:
-			scheduler_ipi();
-			break;
-
-		case IPI_CALL_FUNC:
-			generic_smp_call_function_interrupt();
-			break;
-
-		default:
-			pr_crit("CPU%u: Unknown IPI message 0x%lx\n",
-				cpu, nextmsg);
-			break;
-		}
-	}
-
-	return handled;
-}
-
-void smp_send_reschedule(int cpu)
-{
-	send_ipi_message(cpumask_of(cpu), IPI_RESCHEDULE);
-}
-
-static void stop_this_cpu(void *data)
-{
-	unsigned int cpu = smp_processor_id();
-
-	if (system_state <= SYSTEM_RUNNING) {
-		spin_lock(&stop_lock);
-		pr_crit("CPU%u: stopping\n", cpu);
-		dump_stack();
-		spin_unlock(&stop_lock);
-	}
-
-	set_cpu_online(cpu, false);
-
-	local_irq_disable();
-
-	hard_processor_halt(HALT_OK);
-}
-
-void smp_send_stop(void)
-{
-	smp_call_function(stop_this_cpu, NULL, 0);
-}
-
-/*
- * not supported here
- */
-int setup_profiling_timer(unsigned int multiplier)
-{
-	return -EINVAL;
-}
-
-/*
- * We use KICKs for inter-processor interrupts.
- *
- * For every CPU in "callmap" the IPI data must already have been
- * stored in that CPU's "ipi_data" member prior to calling this
- * function.
- */
-static void kick_raise_softirq(cpumask_t callmap, unsigned int irq)
-{
-	int cpu;
-
-	for_each_cpu(cpu, &callmap) {
-		unsigned int thread;
-
-		thread = cpu_2_hwthread_id[cpu];
-
-		BUG_ON(thread == BAD_HWTHREAD_ID);
-
-		metag_out32(1, T0KICKI + (thread * TnXKICK_STRIDE));
-	}
-}
-
-static TBIRES ipi_handler(TBIRES State, int SigNum, int Triggers,
-		   int Inst, PTBI pTBI, int *handled)
-{
-	*handled = do_IPI();
-
-	return State;
-}
-
-static struct kick_irq_handler ipi_irq = {
-	.func = ipi_handler,
-};
-
-static void smp_cross_call(cpumask_t callmap, enum ipi_msg_type msg)
-{
-	kick_raise_softirq(callmap, 1);
-}
-
-static inline unsigned int get_core_count(void)
-{
-	int i;
-	unsigned int ret = 0;
-
-	for (i = 0; i < CONFIG_NR_CPUS; i++) {
-		if (core_reg_read(TXUCT_ID, TXENABLE_REGNUM, i))
-			ret++;
-	}
-
-	return ret;
-}
-
-/*
- * Initialise the CPU possible map early - this describes the CPUs
- * which may be present or become present in the system.
- */
-void __init smp_init_cpus(void)
-{
-	unsigned int i, ncores = get_core_count();
-
-	/* If no hwthread_map early param was set use default mapping */
-	for (i = 0; i < NR_CPUS; i++)
-		if (cpu_2_hwthread_id[i] == BAD_HWTHREAD_ID) {
-			cpu_2_hwthread_id[i] = i;
-			hwthread_id_2_cpu[i] = i;
-		}
-
-	for (i = 0; i < ncores; i++)
-		set_cpu_possible(i, true);
-
-	kick_register_func(&ipi_irq);
-}
diff --git a/arch/metag/kernel/stacktrace.c b/arch/metag/kernel/stacktrace.c
deleted file mode 100644
index 09d67b7f51ca..000000000000
--- a/arch/metag/kernel/stacktrace.c
+++ /dev/null
@@ -1,187 +0,0 @@
-#include <linux/export.h>
-#include <linux/sched.h>
-#include <linux/sched/debug.h>
-#include <linux/sched/task_stack.h>
-#include <linux/stacktrace.h>
-
-#include <asm/stacktrace.h>
-
-#if defined(CONFIG_FRAME_POINTER)
-
-#ifdef CONFIG_KALLSYMS
-#include <linux/kallsyms.h>
-#include <linux/module.h>
-
-static unsigned long tbi_boing_addr;
-static unsigned long tbi_boing_size;
-
-static void tbi_boing_init(void)
-{
-	/* We need to know where TBIBoingVec is and it's size */
-	unsigned long size;
-	unsigned long offset;
-	char modname[MODULE_NAME_LEN];
-	char name[KSYM_NAME_LEN];
-	tbi_boing_addr = kallsyms_lookup_name("___TBIBoingVec");
-	if (!tbi_boing_addr)
-		tbi_boing_addr = 1;
-	else if (!lookup_symbol_attrs(tbi_boing_addr, &size,
-				      &offset, modname, name))
-		tbi_boing_size = size;
-}
-#endif
-
-/*
- * Unwind the current stack frame and store the new register values in the
- * structure passed as argument. Unwinding is equivalent to a function return,
- * hence the new PC value rather than LR should be used for backtrace.
- */
-int notrace unwind_frame(struct stackframe *frame)
-{
-	struct metag_frame *fp = (struct metag_frame *)frame->fp;
-	unsigned long lr;
-	unsigned long fpnew;
-
-	if (frame->fp & 0x7)
-		return -EINVAL;
-
-	fpnew = fp->fp;
-	lr = fp->lr - 4;
-
-#ifdef CONFIG_KALLSYMS
-	/* If we've reached TBIBoingVec then we're at an interrupt
-	 * entry point or a syscall entry point. The frame pointer
-	 * points to a pt_regs which can be used to continue tracing on
-	 * the other side of the boing.
-	 */
-	if (!tbi_boing_addr)
-		tbi_boing_init();
-	if (tbi_boing_size && lr >= tbi_boing_addr &&
-	    lr < tbi_boing_addr + tbi_boing_size) {
-		struct pt_regs *regs = (struct pt_regs *)fpnew;
-		if (user_mode(regs))
-			return -EINVAL;
-		fpnew = regs->ctx.AX[1].U0;
-		lr = regs->ctx.DX[4].U1;
-	}
-#endif
-
-	/* stack grows up, so frame pointers must decrease */
-	if (fpnew < (ALIGN_DOWN((unsigned long)fp, THREAD_SIZE) +
-		     sizeof(struct thread_info)) || fpnew >= (unsigned long)fp)
-		return -EINVAL;
-
-	/* restore the registers from the stack frame */
-	frame->fp = fpnew;
-	frame->pc = lr;
-
-	return 0;
-}
-#else
-int notrace unwind_frame(struct stackframe *frame)
-{
-	struct metag_frame *sp = (struct metag_frame *)frame->sp;
-
-	if (frame->sp & 0x7)
-		return -EINVAL;
-
-	while (!kstack_end(sp)) {
-		unsigned long addr = sp->lr - 4;
-		sp--;
-
-		if (__kernel_text_address(addr)) {
-			frame->sp = (unsigned long)sp;
-			frame->pc = addr;
-			return 0;
-		}
-	}
-	return -EINVAL;
-}
-#endif
-
-void notrace walk_stackframe(struct stackframe *frame,
-		     int (*fn)(struct stackframe *, void *), void *data)
-{
-	while (1) {
-		int ret;
-
-		if (fn(frame, data))
-			break;
-		ret = unwind_frame(frame);
-		if (ret < 0)
-			break;
-	}
-}
-EXPORT_SYMBOL(walk_stackframe);
-
-#ifdef CONFIG_STACKTRACE
-struct stack_trace_data {
-	struct stack_trace *trace;
-	unsigned int no_sched_functions;
-	unsigned int skip;
-};
-
-static int save_trace(struct stackframe *frame, void *d)
-{
-	struct stack_trace_data *data = d;
-	struct stack_trace *trace = data->trace;
-	unsigned long addr = frame->pc;
-
-	if (data->no_sched_functions && in_sched_functions(addr))
-		return 0;
-	if (data->skip) {
-		data->skip--;
-		return 0;
-	}
-
-	trace->entries[trace->nr_entries++] = addr;
-
-	return trace->nr_entries >= trace->max_entries;
-}
-
-void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
-{
-	struct stack_trace_data data;
-	struct stackframe frame;
-
-	data.trace = trace;
-	data.skip = trace->skip;
-
-	if (tsk != current) {
-#ifdef CONFIG_SMP
-		/*
-		 * What guarantees do we have here that 'tsk' is not
-		 * running on another CPU?  For now, ignore it as we
-		 * can't guarantee we won't explode.
-		 */
-		if (trace->nr_entries < trace->max_entries)
-			trace->entries[trace->nr_entries++] = ULONG_MAX;
-		return;
-#else
-		data.no_sched_functions = 1;
-		frame.fp = thread_saved_fp(tsk);
-		frame.sp = thread_saved_sp(tsk);
-		frame.lr = 0;		/* recovered from the stack */
-		frame.pc = thread_saved_pc(tsk);
-#endif
-	} else {
-		register unsigned long current_sp asm ("A0StP");
-
-		data.no_sched_functions = 0;
-		frame.fp = (unsigned long)__builtin_frame_address(0);
-		frame.sp = current_sp;
-		frame.lr = (unsigned long)__builtin_return_address(0);
-		frame.pc = (unsigned long)save_stack_trace_tsk;
-	}
-
-	walk_stackframe(&frame, save_trace, &data);
-	if (trace->nr_entries < trace->max_entries)
-		trace->entries[trace->nr_entries++] = ULONG_MAX;
-}
-
-void save_stack_trace(struct stack_trace *trace)
-{
-	save_stack_trace_tsk(current, trace);
-}
-EXPORT_SYMBOL_GPL(save_stack_trace);
-#endif
diff --git a/arch/metag/kernel/sys_metag.c b/arch/metag/kernel/sys_metag.c
deleted file mode 100644
index 27d96499dd38..000000000000
--- a/arch/metag/kernel/sys_metag.c
+++ /dev/null
@@ -1,181 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * This file contains various random system calls that
- * have a non-standard calling sequence on the Linux/Meta
- * platform.
- */
-
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/syscalls.h>
-#include <linux/mman.h>
-#include <linux/file.h>
-#include <linux/fs.h>
-#include <linux/uaccess.h>
-#include <linux/unistd.h>
-#include <asm/cacheflush.h>
-#include <asm/core_reg.h>
-#include <asm/global_lock.h>
-#include <asm/switch.h>
-#include <asm/syscall.h>
-#include <asm/syscalls.h>
-#include <asm/user_gateway.h>
-
-#define merge_64(hi, lo) ((((unsigned long long)(hi)) << 32) + \
-			  ((lo) & 0xffffffffUL))
-
-int metag_mmap_check(unsigned long addr, unsigned long len,
-		     unsigned long flags)
-{
-	/* We can't have people trying to write to the bottom of the
-	 * memory map, there are mysterious unspecified things there that
-	 * we don't want people trampling on.
-	 */
-	if ((flags & MAP_FIXED) && (addr < TASK_UNMAPPED_BASE))
-		return -EINVAL;
-
-	return 0;
-}
-
-asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
-			  unsigned long prot, unsigned long flags,
-			  unsigned long fd, unsigned long pgoff)
-{
-	/* The shift for mmap2 is constant, regardless of PAGE_SIZE setting. */
-	if (pgoff & ((1 << (PAGE_SHIFT - 12)) - 1))
-		return -EINVAL;
-
-	pgoff >>= PAGE_SHIFT - 12;
-
-	return sys_mmap_pgoff(addr, len, prot, flags, fd, pgoff);
-}
-
-asmlinkage int sys_metag_setglobalbit(char __user *addr, int mask)
-{
-	char tmp;
-	int ret = 0;
-	unsigned int flags;
-
-	if (!((__force unsigned int)addr >= LINCORE_BASE))
-		return -EFAULT;
-
-	__global_lock2(flags);
-
-	metag_data_cache_flush((__force void *)addr, sizeof(mask));
-
-	ret = __get_user(tmp, addr);
-	if (ret)
-		goto out;
-	tmp |= mask;
-	ret = __put_user(tmp, addr);
-
-	metag_data_cache_flush((__force void *)addr, sizeof(mask));
-
-out:
-	__global_unlock2(flags);
-
-	return ret;
-}
-
-#define TXDEFR_FPU_MASK ((0x1f << 16) | 0x1f)
-
-asmlinkage void sys_metag_set_fpu_flags(unsigned int flags)
-{
-	unsigned int temp;
-
-	flags &= TXDEFR_FPU_MASK;
-
-	temp = __core_reg_get(TXDEFR);
-	temp &= ~TXDEFR_FPU_MASK;
-	temp |= flags;
-	__core_reg_set(TXDEFR, temp);
-}
-
-asmlinkage int sys_metag_set_tls(void __user *ptr)
-{
-	current->thread.tls_ptr = ptr;
-	set_gateway_tls(ptr);
-
-	return 0;
-}
-
-asmlinkage void *sys_metag_get_tls(void)
-{
-	return (__force void *)current->thread.tls_ptr;
-}
-
-asmlinkage long sys_truncate64_metag(const char __user *path, unsigned long lo,
-				     unsigned long hi)
-{
-	return sys_truncate64(path, merge_64(hi, lo));
-}
-
-asmlinkage long sys_ftruncate64_metag(unsigned int fd, unsigned long lo,
-				      unsigned long hi)
-{
-	return sys_ftruncate64(fd, merge_64(hi, lo));
-}
-
-asmlinkage long sys_fadvise64_64_metag(int fd, unsigned long offs_lo,
-				       unsigned long offs_hi,
-				       unsigned long len_lo,
-				       unsigned long len_hi, int advice)
-{
-	return sys_fadvise64_64(fd, merge_64(offs_hi, offs_lo),
-				merge_64(len_hi, len_lo), advice);
-}
-
-asmlinkage long sys_readahead_metag(int fd, unsigned long lo, unsigned long hi,
-				    size_t count)
-{
-	return sys_readahead(fd, merge_64(hi, lo), count);
-}
-
-asmlinkage ssize_t sys_pread64_metag(unsigned long fd, char __user *buf,
-				     size_t count, unsigned long lo,
-				     unsigned long hi)
-{
-	return sys_pread64(fd, buf, count, merge_64(hi, lo));
-}
-
-asmlinkage ssize_t sys_pwrite64_metag(unsigned long fd, char __user *buf,
-				      size_t count, unsigned long lo,
-				      unsigned long hi)
-{
-	return sys_pwrite64(fd, buf, count, merge_64(hi, lo));
-}
-
-asmlinkage long sys_sync_file_range_metag(int fd, unsigned long offs_lo,
-					  unsigned long offs_hi,
-					  unsigned long len_lo,
-					  unsigned long len_hi,
-					  unsigned int flags)
-{
-	return sys_sync_file_range(fd, merge_64(offs_hi, offs_lo),
-				   merge_64(len_hi, len_lo), flags);
-}
-
-/* Provide the actual syscall number to call mapping. */
-#undef __SYSCALL
-#define __SYSCALL(nr, call) [nr] = (call),
-
-/*
- * We need wrappers for anything with unaligned 64bit arguments
- */
-#define sys_truncate64		sys_truncate64_metag
-#define sys_ftruncate64		sys_ftruncate64_metag
-#define sys_fadvise64_64	sys_fadvise64_64_metag
-#define sys_readahead		sys_readahead_metag
-#define sys_pread64		sys_pread64_metag
-#define sys_pwrite64		sys_pwrite64_metag
-#define sys_sync_file_range	sys_sync_file_range_metag
-
-/*
- * Note that we can't include <linux/unistd.h> here since the header
- * guard will defeat us; <asm/unistd.h> checks for __SYSCALL as well.
- */
-const void *sys_call_table[__NR_syscalls] = {
-	[0 ... __NR_syscalls-1] = sys_ni_syscall,
-#include <asm/unistd.h>
-};
diff --git a/arch/metag/kernel/tbiunexp.S b/arch/metag/kernel/tbiunexp.S
deleted file mode 100644
index 2664808086c7..000000000000
--- a/arch/metag/kernel/tbiunexp.S
+++ /dev/null
@@ -1,23 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/* Pass a breakpoint through to Codescape */
-
-#include <asm/tbx.h>
-
-	.text
-        .global	___TBIUnExpXXX
-        .type   ___TBIUnExpXXX,function
-___TBIUnExpXXX:
-	TSTT	D0Ar2,#TBICTX_CRIT_BIT	! Result of nestable int call?
-	BZ	$LTBINormCase		! UnExpXXX at background level
-	MOV	D0Re0,TXMASKI		! Read TXMASKI
-	XOR	TXMASKI,D1Re0,D1Re0	! Turn off BGNDHALT handling!
-	OR	D0Ar2,D0Ar2,D0Re0	! Preserve bits cleared
-$LTBINormCase:
-	MSETL 	[A0StP],D0Ar6,D0Ar4,D0Ar2	! Save args on stack
-	SETL 	[A0StP++],D0Ar2,D1Ar1	! Init area for returned values
-	SWITCH 	#0xC20208		! Total stack frame size 8 Dwords
-					!            write back size 2 Dwords
-	GETL 	D0Re0,D1Re0,[--A0StP]	! Get result
-	SUB 	A0StP,A0StP,#(8*3)	! Recover stack frame
-	MOV 	PC,D1RtP
-        .size   	___TBIUnExpXXX,.-___TBIUnExpXXX
diff --git a/arch/metag/kernel/tcm.c b/arch/metag/kernel/tcm.c
deleted file mode 100644
index 1d7b4e33b114..000000000000
--- a/arch/metag/kernel/tcm.c
+++ /dev/null
@@ -1,152 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright (C) 2010 Imagination Technologies Ltd.
- */
-
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/spinlock.h>
-#include <linux/stddef.h>
-#include <linux/genalloc.h>
-#include <linux/string.h>
-#include <linux/list.h>
-#include <linux/slab.h>
-#include <asm/page.h>
-#include <asm/tcm.h>
-
-struct tcm_pool {
-	struct list_head list;
-	unsigned int tag;
-	unsigned long start;
-	unsigned long end;
-	struct gen_pool *pool;
-};
-
-static LIST_HEAD(pool_list);
-
-static struct tcm_pool *find_pool(unsigned int tag)
-{
-	struct list_head *lh;
-	struct tcm_pool *pool;
-
-	list_for_each(lh, &pool_list) {
-		pool = list_entry(lh, struct tcm_pool, list);
-		if (pool->tag == tag)
-			return pool;
-	}
-
-	return NULL;
-}
-
-/**
- * tcm_alloc - allocate memory from a TCM pool
- * @tag: tag of the pool to allocate memory from
- * @len: number of bytes to be allocated
- *
- * Allocate the requested number of bytes from the pool matching
- * the specified tag. Returns the address of the allocated memory
- * or zero on failure.
- */
-unsigned long tcm_alloc(unsigned int tag, size_t len)
-{
-	unsigned long vaddr;
-	struct tcm_pool *pool;
-
-	pool = find_pool(tag);
-	if (!pool)
-		return 0;
-
-	vaddr = gen_pool_alloc(pool->pool, len);
-	if (!vaddr)
-		return 0;
-
-	return vaddr;
-}
-
-/**
- * tcm_free - free a block of memory to a TCM pool
- * @tag: tag of the pool to free memory to
- * @addr: address of the memory to be freed
- * @len: number of bytes to be freed
- *
- * Free the requested number of bytes at a specific address to the
- * pool matching the specified tag.
- */
-void tcm_free(unsigned int tag, unsigned long addr, size_t len)
-{
-	struct tcm_pool *pool;
-
-	pool = find_pool(tag);
-	if (!pool)
-		return;
-	gen_pool_free(pool->pool, addr, len);
-}
-
-/**
- * tcm_lookup_tag - find the tag matching an address
- * @p: memory address to lookup the tag for
- *
- * Find the tag of the tcm memory region that contains the
- * specified address. Returns %TCM_INVALID_TAG if no such
- * memory region could be found.
- */
-unsigned int tcm_lookup_tag(unsigned long p)
-{
-	struct list_head *lh;
-	struct tcm_pool *pool;
-	unsigned long addr = (unsigned long) p;
-
-	list_for_each(lh, &pool_list) {
-		pool = list_entry(lh, struct tcm_pool, list);
-		if (addr >= pool->start && addr < pool->end)
-			return pool->tag;
-	}
-
-	return TCM_INVALID_TAG;
-}
-
-/**
- * tcm_add_region - add a memory region to TCM pool list
- * @reg: descriptor of region to be added
- *
- * Add a region of memory to the TCM pool list. Returns 0 on success.
- */
-int __init tcm_add_region(struct tcm_region *reg)
-{
-	struct tcm_pool *pool;
-
-	pool = kmalloc(sizeof(*pool), GFP_KERNEL);
-	if (!pool) {
-		pr_err("Failed to alloc memory for TCM pool!\n");
-		return -ENOMEM;
-	}
-
-	pool->tag = reg->tag;
-	pool->start = reg->res.start;
-	pool->end = reg->res.end;
-
-	/*
-	 * 2^3 = 8 bytes granularity to allow for 64bit access alignment.
-	 * -1 = NUMA node specifier.
-	 */
-	pool->pool = gen_pool_create(3, -1);
-
-	if (!pool->pool) {
-		pr_err("Failed to create TCM pool!\n");
-		kfree(pool);
-		return -ENOMEM;
-	}
-
-	if (gen_pool_add(pool->pool, reg->res.start,
-			 reg->res.end - reg->res.start + 1, -1)) {
-		pr_err("Failed to add memory to TCM pool!\n");
-		return -ENOMEM;
-	}
-	pr_info("Added %s TCM pool (%08x bytes @ %08x)\n",
-		reg->res.name, reg->res.end - reg->res.start + 1,
-		reg->res.start);
-
-	list_add_tail(&pool->list, &pool_list);
-
-	return 0;
-}
diff --git a/arch/metag/kernel/time.c b/arch/metag/kernel/time.c
deleted file mode 100644
index 1e809e3b43d1..000000000000
--- a/arch/metag/kernel/time.c
+++ /dev/null
@@ -1,26 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright (C) 2005-2013 Imagination Technologies Ltd.
- *
- * This file contains the Meta-specific time handling details.
- *
- */
-
-#include <clocksource/metag_generic.h>
-#include <linux/clk-provider.h>
-#include <linux/init.h>
-#include <asm/clock.h>
-
-void __init time_init(void)
-{
-#ifdef CONFIG_COMMON_CLK
-	/* Init clocks from device tree */
-	of_clk_init(NULL);
-#endif
-
-	/* Init meta clocks, particularly the core clock */
-	init_metag_clocks();
-
-	/* Set up the timer clock sources */
-	metag_generic_timer_init();
-}
diff --git a/arch/metag/kernel/topology.c b/arch/metag/kernel/topology.c
deleted file mode 100644
index 4ba595701f7d..000000000000
--- a/arch/metag/kernel/topology.c
+++ /dev/null
@@ -1,78 +0,0 @@
-/*
- *  Copyright (C) 2007  Paul Mundt
- *  Copyright (C) 2010  Imagination Technolohies Ltd.
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- */
-#include <linux/cpu.h>
-#include <linux/cpumask.h>
-#include <linux/init.h>
-#include <linux/percpu.h>
-#include <linux/node.h>
-#include <linux/nodemask.h>
-#include <linux/topology.h>
-
-#include <asm/cpu.h>
-
-DEFINE_PER_CPU(struct cpuinfo_metag, cpu_data);
-
-cpumask_t cpu_core_map[NR_CPUS];
-EXPORT_SYMBOL(cpu_core_map);
-
-static cpumask_t cpu_coregroup_map(unsigned int cpu)
-{
-	return *cpu_possible_mask;
-}
-
-const struct cpumask *cpu_coregroup_mask(unsigned int cpu)
-{
-	return &cpu_core_map[cpu];
-}
-
-int arch_update_cpu_topology(void)
-{
-	unsigned int cpu;
-
-	for_each_possible_cpu(cpu)
-		cpu_core_map[cpu] = cpu_coregroup_map(cpu);
-
-	return 0;
-}
-
-static int __init topology_init(void)
-{
-	int i, ret;
-
-#ifdef CONFIG_NEED_MULTIPLE_NODES
-	for_each_online_node(i)
-		register_one_node(i);
-#endif
-
-	for_each_present_cpu(i) {
-		struct cpuinfo_metag *cpuinfo = &per_cpu(cpu_data, i);
-#ifdef CONFIG_HOTPLUG_CPU
-		cpuinfo->cpu.hotpluggable = 1;
-#endif
-		ret = register_cpu(&cpuinfo->cpu, i);
-		if (unlikely(ret))
-			pr_warn("%s: register_cpu %d failed (%d)\n",
-				__func__, i, ret);
-	}
-
-#if defined(CONFIG_NUMA) && !defined(CONFIG_SMP)
-	/*
-	 * In the UP case, make sure the CPU association is still
-	 * registered under each node. Without this, sysfs fails
-	 * to make the connection between nodes other than node0
-	 * and cpu0.
-	 */
-	for_each_online_node(i)
-		if (i != numa_node_id())
-			register_cpu_under_node(raw_smp_processor_id(), i);
-#endif
-
-	return 0;
-}
-subsys_initcall(topology_init);
diff --git a/arch/metag/kernel/traps.c b/arch/metag/kernel/traps.c
deleted file mode 100644
index 3b62b1b0c0b5..000000000000
--- a/arch/metag/kernel/traps.c
+++ /dev/null
@@ -1,992 +0,0 @@
-/*
- *  Meta exception handling.
- *
- *  Copyright (C) 2005,2006,2007,2008,2009,2012 Imagination Technologies Ltd.
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file COPYING in the main directory of this archive
- * for more details.
- */
-
-#include <linux/export.h>
-#include <linux/sched.h>
-#include <linux/sched/debug.h>
-#include <linux/sched/task.h>
-#include <linux/sched/task_stack.h>
-#include <linux/signal.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/preempt.h>
-#include <linux/ptrace.h>
-#include <linux/module.h>
-#include <linux/kallsyms.h>
-#include <linux/kdebug.h>
-#include <linux/kexec.h>
-#include <linux/unistd.h>
-#include <linux/smp.h>
-#include <linux/slab.h>
-#include <linux/syscalls.h>
-
-#include <asm/bug.h>
-#include <asm/core_reg.h>
-#include <asm/irqflags.h>
-#include <asm/siginfo.h>
-#include <asm/traps.h>
-#include <asm/hwthread.h>
-#include <asm/setup.h>
-#include <asm/switch.h>
-#include <asm/user_gateway.h>
-#include <asm/syscall.h>
-#include <asm/syscalls.h>
-
-/* Passing syscall arguments as long long is quicker. */
-typedef unsigned int (*LPSYSCALL) (unsigned long long,
-				   unsigned long long,
-				   unsigned long long);
-
-/*
- * Users of LNKSET should compare the bus error bits obtained from DEFR
- * against TXDEFR_LNKSET_SUCCESS only as the failure code will vary between
- * different cores revisions.
- */
-#define TXDEFR_LNKSET_SUCCESS 0x02000000
-#define TXDEFR_LNKSET_FAILURE 0x04000000
-
-/*
- * Our global TBI handle.  Initialised from setup.c/setup_arch.
- */
-DECLARE_PER_CPU(PTBI, pTBI);
-
-#ifdef CONFIG_SMP
-static DEFINE_PER_CPU(unsigned int, trigger_mask);
-#else
-unsigned int global_trigger_mask;
-EXPORT_SYMBOL(global_trigger_mask);
-#endif
-
-unsigned long per_cpu__stack_save[NR_CPUS];
-
-static const char * const trap_names[] = {
-	[TBIXXF_SIGNUM_IIF] = "Illegal instruction fault",
-	[TBIXXF_SIGNUM_PGF] = "Privilege violation",
-	[TBIXXF_SIGNUM_DHF] = "Unaligned data access fault",
-	[TBIXXF_SIGNUM_IGF] = "Code fetch general read failure",
-	[TBIXXF_SIGNUM_DGF] = "Data access general read/write fault",
-	[TBIXXF_SIGNUM_IPF] = "Code fetch page fault",
-	[TBIXXF_SIGNUM_DPF] = "Data access page fault",
-	[TBIXXF_SIGNUM_IHF] = "Instruction breakpoint",
-	[TBIXXF_SIGNUM_DWF] = "Read-only data access fault",
-};
-
-const char *trap_name(int trapno)
-{
-	if (trapno >= 0 && trapno < ARRAY_SIZE(trap_names)
-			&& trap_names[trapno])
-		return trap_names[trapno];
-	return "Unknown fault";
-}
-
-static DEFINE_SPINLOCK(die_lock);
-
-void __noreturn die(const char *str, struct pt_regs *regs,
-		    long err, unsigned long addr)
-{
-	static int die_counter;
-
-	oops_enter();
-
-	spin_lock_irq(&die_lock);
-	console_verbose();
-	bust_spinlocks(1);
-	pr_err("%s: err %04lx (%s) addr %08lx [#%d]\n", str, err & 0xffff,
-	       trap_name(err & 0xffff), addr, ++die_counter);
-
-	print_modules();
-	show_regs(regs);
-
-	pr_err("Process: %s (pid: %d, stack limit = %p)\n", current->comm,
-	       task_pid_nr(current), task_stack_page(current) + THREAD_SIZE);
-
-	bust_spinlocks(0);
-	add_taint(TAINT_DIE, LOCKDEP_NOW_UNRELIABLE);
-	if (kexec_should_crash(current))
-		crash_kexec(regs);
-
-	if (in_interrupt())
-		panic("Fatal exception in interrupt");
-
-	if (panic_on_oops)
-		panic("Fatal exception");
-
-	spin_unlock_irq(&die_lock);
-	oops_exit();
-	do_exit(SIGSEGV);
-}
-
-#ifdef CONFIG_METAG_DSP
-/*
- * The ECH encoding specifies the size of a DSPRAM as,
- *
- *		"slots" / 4
- *
- * A "slot" is the size of two DSPRAM bank entries; an entry from
- * DSPRAM bank A and an entry from DSPRAM bank B. One DSPRAM bank
- * entry is 4 bytes.
- */
-#define SLOT_SZ	8
-static inline unsigned int decode_dspram_size(unsigned int size)
-{
-	unsigned int _sz = size & 0x7f;
-
-	return _sz * SLOT_SZ * 4;
-}
-
-static void dspram_save(struct meta_ext_context *dsp_ctx,
-			unsigned int ramA_sz, unsigned int ramB_sz)
-{
-	unsigned int ram_sz[2];
-	int i;
-
-	ram_sz[0] = ramA_sz;
-	ram_sz[1] = ramB_sz;
-
-	for (i = 0; i < 2; i++) {
-		if (ram_sz[i] != 0) {
-			unsigned int sz;
-
-			if (i == 0)
-				sz = decode_dspram_size(ram_sz[i] >> 8);
-			else
-				sz = decode_dspram_size(ram_sz[i]);
-
-			if (dsp_ctx->ram[i] == NULL) {
-				dsp_ctx->ram[i] = kmalloc(sz, GFP_KERNEL);
-
-				if (dsp_ctx->ram[i] == NULL)
-					panic("couldn't save DSP context");
-			} else {
-				if (ram_sz[i] > dsp_ctx->ram_sz[i]) {
-					kfree(dsp_ctx->ram[i]);
-
-					dsp_ctx->ram[i] = kmalloc(sz,
-								  GFP_KERNEL);
-
-					if (dsp_ctx->ram[i] == NULL)
-						panic("couldn't save DSP context");
-				}
-			}
-
-			if (i == 0)
-				__TBIDspramSaveA(ram_sz[i], dsp_ctx->ram[i]);
-			else
-				__TBIDspramSaveB(ram_sz[i], dsp_ctx->ram[i]);
-
-			dsp_ctx->ram_sz[i] = ram_sz[i];
-		}
-	}
-}
-#endif /* CONFIG_METAG_DSP */
-
-/*
- * Allow interrupts to be nested and save any "extended" register
- * context state, e.g. DSP regs and RAMs.
- */
-static void nest_interrupts(TBIRES State, unsigned long mask)
-{
-#ifdef CONFIG_METAG_DSP
-	struct meta_ext_context *dsp_ctx;
-	unsigned int D0_8;
-
-	/*
-	 * D0.8 may contain an ECH encoding. The upper 16 bits
-	 * tell us what DSP resources the current process is
-	 * using. OR the bits into the SaveMask so that
-	 * __TBINestInts() knows what resources to save as
-	 * part of this context.
-	 *
-	 * Don't save the context if we're nesting interrupts in the
-	 * kernel because the kernel doesn't use DSP hardware.
-	 */
-	D0_8 = __core_reg_get(D0.8);
-
-	if (D0_8 && (State.Sig.SaveMask & TBICTX_PRIV_BIT)) {
-		State.Sig.SaveMask |= (D0_8 >> 16);
-
-		dsp_ctx = current->thread.dsp_context;
-		if (dsp_ctx == NULL) {
-			dsp_ctx = kzalloc(sizeof(*dsp_ctx), GFP_KERNEL);
-			if (dsp_ctx == NULL)
-				panic("couldn't save DSP context: ENOMEM");
-
-			current->thread.dsp_context = dsp_ctx;
-		}
-
-		current->thread.user_flags |= (D0_8 & 0xffff0000);
-		__TBINestInts(State, &dsp_ctx->regs, mask);
-		dspram_save(dsp_ctx, D0_8 & 0x7f00, D0_8 & 0x007f);
-	} else
-		__TBINestInts(State, NULL, mask);
-#else
-	__TBINestInts(State, NULL, mask);
-#endif
-}
-
-void head_end(TBIRES State, unsigned long mask)
-{
-	unsigned int savemask = (unsigned short)State.Sig.SaveMask;
-	unsigned int ctx_savemask = (unsigned short)State.Sig.pCtx->SaveMask;
-
-	if (savemask & TBICTX_PRIV_BIT) {
-		ctx_savemask |= TBICTX_PRIV_BIT;
-		current->thread.user_flags = savemask;
-	}
-
-	/* Always undo the sleep bit */
-	ctx_savemask &= ~TBICTX_WAIT_BIT;
-
-	/* Always save the catch buffer and RD pipe if they are dirty */
-	savemask |= TBICTX_XCBF_BIT;
-
-	/* Only save the catch and RD if we have not already done so.
-	 * Note - the RD bits are in the pCtx only, and not in the
-	 * State.SaveMask.
-	 */
-	if ((savemask & TBICTX_CBUF_BIT) ||
-	    (ctx_savemask & TBICTX_CBRP_BIT)) {
-		/* Have we already saved the buffers though?
-		 * - See TestTrack 5071 */
-		if (ctx_savemask & TBICTX_XCBF_BIT) {
-			/* Strip off the bits so the call to __TBINestInts
-			 * won't save the buffers again. */
-			savemask &= ~TBICTX_CBUF_BIT;
-			ctx_savemask &= ~TBICTX_CBRP_BIT;
-		}
-	}
-
-#ifdef CONFIG_METAG_META21
-	{
-		unsigned int depth, txdefr;
-
-		/*
-		 * Save TXDEFR state.
-		 *
-		 * The process may have been interrupted after a LNKSET, but
-		 * before it could read the DEFR state, so we mustn't lose that
-		 * state or it could end up retrying an atomic operation that
-		 * succeeded.
-		 *
-		 * All interrupts are disabled at this point so we
-		 * don't need to perform any locking. We must do this
-		 * dance before we use LNKGET or LNKSET.
-		 */
-		BUG_ON(current->thread.int_depth > HARDIRQ_BITS);
-
-		depth = current->thread.int_depth++;
-
-		txdefr = __core_reg_get(TXDEFR);
-
-		txdefr &= TXDEFR_BUS_STATE_BITS;
-		if (txdefr & TXDEFR_LNKSET_SUCCESS)
-			current->thread.txdefr_failure &= ~(1 << depth);
-		else
-			current->thread.txdefr_failure |= (1 << depth);
-	}
-#endif
-
-	State.Sig.SaveMask = savemask;
-	State.Sig.pCtx->SaveMask = ctx_savemask;
-
-	nest_interrupts(State, mask);
-
-#ifdef CONFIG_METAG_POISON_CATCH_BUFFERS
-	/* Poison the catch registers.  This shows up any mistakes we have
-	 * made in their handling MUCH quicker.
-	 */
-	__core_reg_set(TXCATCH0, 0x87650021);
-	__core_reg_set(TXCATCH1, 0x87654322);
-	__core_reg_set(TXCATCH2, 0x87654323);
-	__core_reg_set(TXCATCH3, 0x87654324);
-#endif /* CONFIG_METAG_POISON_CATCH_BUFFERS */
-}
-
-TBIRES tail_end_sys(TBIRES State, int syscall, int *restart)
-{
-	struct pt_regs *regs = (struct pt_regs *)State.Sig.pCtx;
-	unsigned long flags;
-
-	local_irq_disable();
-
-	if (user_mode(regs)) {
-		flags = current_thread_info()->flags;
-		if (flags & _TIF_WORK_MASK &&
-		    do_work_pending(regs, flags, syscall)) {
-			*restart = 1;
-			return State;
-		}
-
-#ifdef CONFIG_METAG_FPU
-		if (current->thread.fpu_context &&
-		    current->thread.fpu_context->needs_restore) {
-			__TBICtxFPURestore(State, current->thread.fpu_context);
-			/*
-			 * Clearing this bit ensures the FP unit is not made
-			 * active again unless it is used.
-			 */
-			State.Sig.SaveMask &= ~TBICTX_FPAC_BIT;
-			current->thread.fpu_context->needs_restore = false;
-		}
-		State.Sig.TrigMask |= TBI_TRIG_BIT(TBID_SIGNUM_DFR);
-#endif
-	}
-
-	/* TBI will turn interrupts back on at some point. */
-	if (!irqs_disabled_flags((unsigned long)State.Sig.TrigMask))
-		trace_hardirqs_on();
-
-#ifdef CONFIG_METAG_DSP
-	/*
-	 * If we previously saved an extended context then restore it
-	 * now. Otherwise, clear D0.8 because this process is not
-	 * using DSP hardware.
-	 */
-	if (State.Sig.pCtx->SaveMask & TBICTX_XEXT_BIT) {
-		unsigned int D0_8;
-		struct meta_ext_context *dsp_ctx = current->thread.dsp_context;
-
-		/* Make sure we're going to return to userland. */
-		BUG_ON(current->thread.int_depth != 1);
-
-		if (dsp_ctx->ram_sz[0] > 0)
-			__TBIDspramRestoreA(dsp_ctx->ram_sz[0],
-					    dsp_ctx->ram[0]);
-		if (dsp_ctx->ram_sz[1] > 0)
-			__TBIDspramRestoreB(dsp_ctx->ram_sz[1],
-					    dsp_ctx->ram[1]);
-
-		State.Sig.SaveMask |= State.Sig.pCtx->SaveMask;
-		__TBICtxRestore(State, current->thread.dsp_context);
-		D0_8 = __core_reg_get(D0.8);
-		D0_8 |= current->thread.user_flags & 0xffff0000;
-		D0_8 |= (dsp_ctx->ram_sz[1] | dsp_ctx->ram_sz[0]) & 0xffff;
-		__core_reg_set(D0.8, D0_8);
-	} else
-		__core_reg_set(D0.8, 0);
-#endif /* CONFIG_METAG_DSP */
-
-#ifdef CONFIG_METAG_META21
-	{
-		unsigned int depth, txdefr;
-
-		/*
-		 * If there hasn't been a LNKSET since the last LNKGET then the
-		 * link flag will be set, causing the next LNKSET to succeed if
-		 * the addresses match. The two LNK operations may not be a pair
-		 * (e.g. see atomic_read()), so the LNKSET should fail.
-		 * We use a conditional-never LNKSET to clear the link flag
-		 * without side effects.
-		 */
-		asm volatile("LNKSETDNV [D0Re0],D0Re0");
-
-		depth = --current->thread.int_depth;
-
-		BUG_ON(user_mode(regs) && depth);
-
-		txdefr = __core_reg_get(TXDEFR);
-
-		txdefr &= ~TXDEFR_BUS_STATE_BITS;
-
-		/* Do we need to restore a failure code into TXDEFR? */
-		if (current->thread.txdefr_failure & (1 << depth))
-			txdefr |= (TXDEFR_LNKSET_FAILURE | TXDEFR_BUS_TRIG_BIT);
-		else
-			txdefr |= (TXDEFR_LNKSET_SUCCESS | TXDEFR_BUS_TRIG_BIT);
-
-		__core_reg_set(TXDEFR, txdefr);
-	}
-#endif
-	return State;
-}
-
-#ifdef CONFIG_SMP
-/*
- * If we took an interrupt in the middle of __kuser_get_tls then we need
- * to rewind the PC to the start of the function in case the process
- * gets migrated to another thread (SMP only) and it reads the wrong tls
- * data.
- */
-static inline void _restart_critical_section(TBIRES State)
-{
-	unsigned long get_tls_start;
-	unsigned long get_tls_end;
-
-	get_tls_start = (unsigned long)__kuser_get_tls -
-		(unsigned long)&__user_gateway_start;
-
-	get_tls_start += USER_GATEWAY_PAGE;
-
-	get_tls_end = (unsigned long)__kuser_get_tls_end -
-		(unsigned long)&__user_gateway_start;
-
-	get_tls_end += USER_GATEWAY_PAGE;
-
-	if ((State.Sig.pCtx->CurrPC >= get_tls_start) &&
-	    (State.Sig.pCtx->CurrPC < get_tls_end))
-		State.Sig.pCtx->CurrPC = get_tls_start;
-}
-#else
-/*
- * If we took an interrupt in the middle of
- * __kuser_cmpxchg then we need to rewind the PC to the
- * start of the function.
- */
-static inline void _restart_critical_section(TBIRES State)
-{
-	unsigned long cmpxchg_start;
-	unsigned long cmpxchg_end;
-
-	cmpxchg_start = (unsigned long)__kuser_cmpxchg -
-		(unsigned long)&__user_gateway_start;
-
-	cmpxchg_start += USER_GATEWAY_PAGE;
-
-	cmpxchg_end = (unsigned long)__kuser_cmpxchg_end -
-		(unsigned long)&__user_gateway_start;
-
-	cmpxchg_end += USER_GATEWAY_PAGE;
-
-	if ((State.Sig.pCtx->CurrPC >= cmpxchg_start) &&
-	    (State.Sig.pCtx->CurrPC < cmpxchg_end))
-		State.Sig.pCtx->CurrPC = cmpxchg_start;
-}
-#endif
-
-/* Used by kick_handler() */
-void restart_critical_section(TBIRES State)
-{
-	_restart_critical_section(State);
-}
-
-TBIRES trigger_handler(TBIRES State, int SigNum, int Triggers, int Inst,
-		       PTBI pTBI)
-{
-	head_end(State, ~INTS_OFF_MASK);
-
-	/* If we interrupted user code handle any critical sections. */
-	if (State.Sig.SaveMask & TBICTX_PRIV_BIT)
-		_restart_critical_section(State);
-
-	trace_hardirqs_off();
-
-	do_IRQ(SigNum, (struct pt_regs *)State.Sig.pCtx);
-
-	return tail_end(State);
-}
-
-static unsigned int load_fault(PTBICTXEXTCB0 pbuf)
-{
-	return pbuf->CBFlags & TXCATCH0_READ_BIT;
-}
-
-static unsigned long fault_address(PTBICTXEXTCB0 pbuf)
-{
-	return pbuf->CBAddr;
-}
-
-static void unhandled_fault(struct pt_regs *regs, unsigned long addr,
-			    int signo, int code, int trapno)
-{
-	if (user_mode(regs)) {
-		siginfo_t info;
-
-		if (show_unhandled_signals && unhandled_signal(current, signo)
-		    && printk_ratelimit()) {
-
-			pr_info("pid %d unhandled fault: pc 0x%08x, addr 0x%08lx, trap %d (%s)\n",
-				current->pid, regs->ctx.CurrPC, addr,
-				trapno, trap_name(trapno));
-			print_vma_addr(" in ", regs->ctx.CurrPC);
-			print_vma_addr(" rtp in ", regs->ctx.DX[4].U1);
-			printk("\n");
-			show_regs(regs);
-		}
-
-		info.si_signo = signo;
-		info.si_errno = 0;
-		info.si_code = code;
-		info.si_addr = (__force void __user *)addr;
-		info.si_trapno = trapno;
-		force_sig_info(signo, &info, current);
-	} else {
-		die("Oops", regs, trapno, addr);
-	}
-}
-
-static int handle_data_fault(PTBICTXEXTCB0 pcbuf, struct pt_regs *regs,
-			     unsigned int data_address, int trapno)
-{
-	int ret;
-
-	ret = do_page_fault(regs, data_address, !load_fault(pcbuf), trapno);
-
-	return ret;
-}
-
-static unsigned long get_inst_fault_address(struct pt_regs *regs)
-{
-	return regs->ctx.CurrPC;
-}
-
-TBIRES fault_handler(TBIRES State, int SigNum, int Triggers,
-		     int Inst, PTBI pTBI)
-{
-	struct pt_regs *regs = (struct pt_regs *)State.Sig.pCtx;
-	PTBICTXEXTCB0 pcbuf = (PTBICTXEXTCB0)&regs->extcb0;
-	unsigned long data_address;
-
-	head_end(State, ~INTS_OFF_MASK);
-
-	/* Hardware breakpoint or data watch */
-	if ((SigNum == TBIXXF_SIGNUM_IHF) ||
-	    ((SigNum == TBIXXF_SIGNUM_DHF) &&
-	     (pcbuf[0].CBFlags & (TXCATCH0_WATCH1_BIT |
-				  TXCATCH0_WATCH0_BIT)))) {
-		State = __TBIUnExpXXX(State, SigNum, Triggers, Inst,
-				      pTBI);
-		return tail_end(State);
-	}
-
-	local_irq_enable();
-
-	data_address = fault_address(pcbuf);
-
-	switch (SigNum) {
-	case TBIXXF_SIGNUM_IGF:
-		/* 1st-level entry invalid (instruction fetch) */
-	case TBIXXF_SIGNUM_IPF: {
-		/* 2nd-level entry invalid (instruction fetch) */
-		unsigned long addr = get_inst_fault_address(regs);
-		do_page_fault(regs, addr, 0, SigNum);
-		break;
-	}
-
-	case TBIXXF_SIGNUM_DGF:
-		/* 1st-level entry invalid (data access) */
-	case TBIXXF_SIGNUM_DPF:
-		/* 2nd-level entry invalid (data access) */
-	case TBIXXF_SIGNUM_DWF:
-		/* Write to read only page */
-		handle_data_fault(pcbuf, regs, data_address, SigNum);
-		break;
-
-	case TBIXXF_SIGNUM_IIF:
-		/* Illegal instruction */
-		unhandled_fault(regs, regs->ctx.CurrPC, SIGILL, ILL_ILLOPC,
-				SigNum);
-		break;
-
-	case TBIXXF_SIGNUM_DHF:
-		/* Unaligned access */
-		unhandled_fault(regs, data_address, SIGBUS, BUS_ADRALN,
-				SigNum);
-		break;
-	case TBIXXF_SIGNUM_PGF:
-		/* Privilege violation */
-		unhandled_fault(regs, data_address, SIGSEGV, SEGV_ACCERR,
-				SigNum);
-		break;
-	default:
-		BUG();
-		break;
-	}
-
-	return tail_end(State);
-}
-
-static bool switch_is_syscall(unsigned int inst)
-{
-	return inst == __METAG_SW_ENCODING(SYS);
-}
-
-static bool switch_is_legacy_syscall(unsigned int inst)
-{
-	return inst == __METAG_SW_ENCODING(SYS_LEGACY);
-}
-
-static inline void step_over_switch(struct pt_regs *regs, unsigned int inst)
-{
-	regs->ctx.CurrPC += 4;
-}
-
-static inline int test_syscall_work(void)
-{
-	return current_thread_info()->flags & _TIF_WORK_SYSCALL_MASK;
-}
-
-TBIRES switch1_handler(TBIRES State, int SigNum, int Triggers,
-		       int Inst, PTBI pTBI)
-{
-	struct pt_regs *regs = (struct pt_regs *)State.Sig.pCtx;
-	unsigned int sysnumber;
-	unsigned long long a1_a2, a3_a4, a5_a6;
-	LPSYSCALL syscall_entry;
-	int restart;
-
-	head_end(State, ~INTS_OFF_MASK);
-
-	/*
-	 * If this is not a syscall SWITCH it could be a breakpoint.
-	 */
-	if (!switch_is_syscall(Inst)) {
-		/*
-		 * Alert the user if they're trying to use legacy system
-		 * calls. This suggests they need to update their C
-		 * library and build against up to date kernel headers.
-		 */
-		if (switch_is_legacy_syscall(Inst))
-			pr_warn_once("WARNING: A legacy syscall was made. Your userland needs updating.\n");
-		/*
-		 * We don't know how to handle the SWITCH and cannot
-		 * safely ignore it, so treat all unknown switches
-		 * (including breakpoints) as traps.
-		 */
-		force_sig(SIGTRAP, current);
-		return tail_end(State);
-	}
-
-	local_irq_enable();
-
-restart_syscall:
-	restart = 0;
-	sysnumber = regs->ctx.DX[0].U1;
-
-	if (test_syscall_work())
-		sysnumber = syscall_trace_enter(regs);
-
-	/* Skip over the SWITCH instruction - or you just get 'stuck' on it! */
-	step_over_switch(regs, Inst);
-
-	if (sysnumber >= __NR_syscalls) {
-		pr_debug("unknown syscall number: %d\n", sysnumber);
-		syscall_entry = (LPSYSCALL) sys_ni_syscall;
-	} else {
-		syscall_entry = (LPSYSCALL) sys_call_table[sysnumber];
-	}
-
-	/* Use 64bit loads for speed. */
-	a5_a6 = *(unsigned long long *)&regs->ctx.DX[1];
-	a3_a4 = *(unsigned long long *)&regs->ctx.DX[2];
-	a1_a2 = *(unsigned long long *)&regs->ctx.DX[3];
-
-	/* here is the actual call to the syscall handler functions */
-	regs->ctx.DX[0].U0 = syscall_entry(a1_a2, a3_a4, a5_a6);
-
-	if (test_syscall_work())
-		syscall_trace_leave(regs);
-
-	State = tail_end_sys(State, sysnumber, &restart);
-	/* Handlerless restarts shouldn't go via userland */
-	if (restart)
-		goto restart_syscall;
-	return State;
-}
-
-TBIRES switchx_handler(TBIRES State, int SigNum, int Triggers,
-		       int Inst, PTBI pTBI)
-{
-	struct pt_regs *regs = (struct pt_regs *)State.Sig.pCtx;
-
-	/*
-	 * This can be caused by any user process simply executing an unusual
-	 * SWITCH instruction. If there's no DA, __TBIUnExpXXX will cause the
-	 * thread to stop, so signal a SIGTRAP instead.
-	 */
-	head_end(State, ~INTS_OFF_MASK);
-	if (user_mode(regs))
-		force_sig(SIGTRAP, current);
-	else
-		State = __TBIUnExpXXX(State, SigNum, Triggers, Inst, pTBI);
-	return tail_end(State);
-}
-
-#ifdef CONFIG_METAG_META21
-TBIRES fpe_handler(TBIRES State, int SigNum, int Triggers, int Inst, PTBI pTBI)
-{
-	struct pt_regs *regs = (struct pt_regs *)State.Sig.pCtx;
-	unsigned int error_state = Triggers;
-	siginfo_t info;
-
-	head_end(State, ~INTS_OFF_MASK);
-
-	local_irq_enable();
-
-	info.si_signo = SIGFPE;
-
-	if (error_state & TXSTAT_FPE_INVALID_BIT)
-		info.si_code = FPE_FLTINV;
-	else if (error_state & TXSTAT_FPE_DIVBYZERO_BIT)
-		info.si_code = FPE_FLTDIV;
-	else if (error_state & TXSTAT_FPE_OVERFLOW_BIT)
-		info.si_code = FPE_FLTOVF;
-	else if (error_state & TXSTAT_FPE_UNDERFLOW_BIT)
-		info.si_code = FPE_FLTUND;
-	else if (error_state & TXSTAT_FPE_INEXACT_BIT)
-		info.si_code = FPE_FLTRES;
-	else
-		info.si_code = FPE_FIXME;
-	info.si_errno = 0;
-	info.si_addr = (__force void __user *)regs->ctx.CurrPC;
-	force_sig_info(SIGFPE, &info, current);
-
-	return tail_end(State);
-}
-#endif
-
-#ifdef CONFIG_METAG_SUSPEND_MEM
-struct traps_context {
-	PTBIAPIFN fnSigs[TBID_SIGNUM_MAX + 1];
-};
-
-static struct traps_context *metag_traps_context;
-
-int traps_save_context(void)
-{
-	unsigned long cpu = smp_processor_id();
-	PTBI _pTBI = per_cpu(pTBI, cpu);
-	struct traps_context *context;
-
-	context = kzalloc(sizeof(*context), GFP_ATOMIC);
-	if (!context)
-		return -ENOMEM;
-
-	memcpy(context->fnSigs, (void *)_pTBI->fnSigs, sizeof(context->fnSigs));
-
-	metag_traps_context = context;
-	return 0;
-}
-
-int traps_restore_context(void)
-{
-	unsigned long cpu = smp_processor_id();
-	PTBI _pTBI = per_cpu(pTBI, cpu);
-	struct traps_context *context = metag_traps_context;
-
-	metag_traps_context = NULL;
-
-	memcpy((void *)_pTBI->fnSigs, context->fnSigs, sizeof(context->fnSigs));
-
-	kfree(context);
-	return 0;
-}
-#endif
-
-#ifdef CONFIG_SMP
-static inline unsigned int _get_trigger_mask(void)
-{
-	unsigned long cpu = smp_processor_id();
-	return per_cpu(trigger_mask, cpu);
-}
-
-unsigned int get_trigger_mask(void)
-{
-	return _get_trigger_mask();
-}
-EXPORT_SYMBOL(get_trigger_mask);
-
-static void set_trigger_mask(unsigned int mask)
-{
-	unsigned long cpu = smp_processor_id();
-	per_cpu(trigger_mask, cpu) = mask;
-}
-
-void arch_local_irq_enable(void)
-{
-	preempt_disable();
-	arch_local_irq_restore(_get_trigger_mask());
-	preempt_enable_no_resched();
-}
-EXPORT_SYMBOL(arch_local_irq_enable);
-#else
-static void set_trigger_mask(unsigned int mask)
-{
-	global_trigger_mask = mask;
-}
-#endif
-
-void per_cpu_trap_init(unsigned long cpu)
-{
-	TBIRES int_context;
-	unsigned int thread = cpu_2_hwthread_id[cpu];
-
-	set_trigger_mask(TBI_INTS_INIT(thread) | /* interrupts */
-			 TBI_TRIG_BIT(TBID_SIGNUM_LWK) | /* low level kick */
-			 TBI_TRIG_BIT(TBID_SIGNUM_SW1));
-
-	/* non-priv - use current stack */
-	int_context.Sig.pCtx = NULL;
-	/* Start with interrupts off */
-	int_context.Sig.TrigMask = INTS_OFF_MASK;
-	int_context.Sig.SaveMask = 0;
-
-	/* And call __TBIASyncTrigger() */
-	__TBIASyncTrigger(int_context);
-}
-
-void __init trap_init(void)
-{
-	unsigned long cpu = smp_processor_id();
-	PTBI _pTBI = per_cpu(pTBI, cpu);
-
-	_pTBI->fnSigs[TBID_SIGNUM_XXF] = fault_handler;
-	_pTBI->fnSigs[TBID_SIGNUM_SW0] = switchx_handler;
-	_pTBI->fnSigs[TBID_SIGNUM_SW1] = switch1_handler;
-	_pTBI->fnSigs[TBID_SIGNUM_SW2] = switchx_handler;
-	_pTBI->fnSigs[TBID_SIGNUM_SW3] = switchx_handler;
-	_pTBI->fnSigs[TBID_SIGNUM_LWK] = kick_handler;
-
-#ifdef CONFIG_METAG_META21
-	_pTBI->fnSigs[TBID_SIGNUM_DFR] = __TBIHandleDFR;
-	_pTBI->fnSigs[TBID_SIGNUM_FPE] = fpe_handler;
-#endif
-
-	per_cpu_trap_init(cpu);
-}
-
-void tbi_startup_interrupt(int irq)
-{
-	unsigned long cpu = smp_processor_id();
-	PTBI _pTBI = per_cpu(pTBI, cpu);
-
-	BUG_ON(irq > TBID_SIGNUM_MAX);
-
-	/* For TR1 and TR2, the thread id is encoded in the irq number */
-	if (irq >= TBID_SIGNUM_T10 && irq < TBID_SIGNUM_TR3)
-		cpu = hwthread_id_2_cpu[(irq - TBID_SIGNUM_T10) % 4];
-
-	set_trigger_mask(get_trigger_mask() | TBI_TRIG_BIT(irq));
-
-	_pTBI->fnSigs[irq] = trigger_handler;
-}
-
-void tbi_shutdown_interrupt(int irq)
-{
-	unsigned long cpu = smp_processor_id();
-	PTBI _pTBI = per_cpu(pTBI, cpu);
-
-	BUG_ON(irq > TBID_SIGNUM_MAX);
-
-	set_trigger_mask(get_trigger_mask() & ~TBI_TRIG_BIT(irq));
-
-	_pTBI->fnSigs[irq] = __TBIUnExpXXX;
-}
-
-int ret_from_fork(TBIRES arg)
-{
-	struct task_struct *prev = arg.Switch.pPara;
-	struct task_struct *tsk = current;
-	struct pt_regs *regs = task_pt_regs(tsk);
-	int (*fn)(void *);
-	TBIRES Next;
-
-	schedule_tail(prev);
-
-	if (tsk->flags & PF_KTHREAD) {
-		fn = (void *)regs->ctx.DX[4].U1;
-		BUG_ON(!fn);
-
-		fn((void *)regs->ctx.DX[3].U1);
-	}
-
-	if (test_syscall_work())
-		syscall_trace_leave(regs);
-
-	preempt_disable();
-
-	Next.Sig.TrigMask = get_trigger_mask();
-	Next.Sig.SaveMask = 0;
-	Next.Sig.pCtx = &regs->ctx;
-
-	set_gateway_tls(current->thread.tls_ptr);
-
-	preempt_enable_no_resched();
-
-	/* And interrupts should come back on when we resume the real usermode
-	 * code. Call __TBIASyncResume()
-	 */
-	__TBIASyncResume(tail_end(Next));
-	/* ASyncResume should NEVER return */
-	BUG();
-	return 0;
-}
-
-void show_trace(struct task_struct *tsk, unsigned long *sp,
-		struct pt_regs *regs)
-{
-	unsigned long addr;
-#ifdef CONFIG_FRAME_POINTER
-	unsigned long fp, fpnew;
-	unsigned long stack;
-#endif
-
-	if (regs && user_mode(regs))
-		return;
-
-	printk("\nCall trace: ");
-#ifdef CONFIG_KALLSYMS
-	printk("\n");
-#endif
-
-	if (!tsk)
-		tsk = current;
-
-#ifdef CONFIG_FRAME_POINTER
-	if (regs) {
-		print_ip_sym(regs->ctx.CurrPC);
-		fp = regs->ctx.AX[1].U0;
-	} else {
-		fp = __core_reg_get(A0FrP);
-	}
-
-	/* detect when the frame pointer has been used for other purposes and
-	 * doesn't point to the stack (it may point completely elsewhere which
-	 * kstack_end may not detect).
-	 */
-	stack = (unsigned long)task_stack_page(tsk);
-	while (fp >= stack && fp + 8 <= stack + THREAD_SIZE) {
-		addr = __raw_readl((unsigned long *)(fp + 4)) - 4;
-		if (kernel_text_address(addr))
-			print_ip_sym(addr);
-		else
-			break;
-		/* stack grows up, so frame pointers must decrease */
-		fpnew = __raw_readl((unsigned long *)(fp + 0));
-		if (fpnew >= fp)
-			break;
-		fp = fpnew;
-	}
-#else
-	while (!kstack_end(sp)) {
-		addr = (*sp--) - 4;
-		if (kernel_text_address(addr))
-			print_ip_sym(addr);
-	}
-#endif
-
-	printk("\n");
-
-	debug_show_held_locks(tsk);
-}
-
-void show_stack(struct task_struct *tsk, unsigned long *sp)
-{
-	if (!tsk)
-		tsk = current;
-	if (tsk == current)
-		sp = (unsigned long *)current_stack_pointer;
-	else
-		sp = (unsigned long *)tsk->thread.kernel_context->AX[0].U0;
-
-	show_trace(tsk, sp, NULL);
-}
diff --git a/arch/metag/kernel/user_gateway.S b/arch/metag/kernel/user_gateway.S
deleted file mode 100644
index 7833fb8f9ddd..000000000000
--- a/arch/metag/kernel/user_gateway.S
+++ /dev/null
@@ -1,98 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Copyright (C) 2010 Imagination Technologies Ltd.
- *
- * This file contains code that can be accessed from userspace and can
- * access certain kernel data structures without the overhead of a system
- * call.
- */
-
-#include <asm/metag_regs.h>
-#include <asm/user_gateway.h>
-
-/*
- * User helpers.
- *
- * These are segment of kernel provided user code reachable from user space
- * at a fixed address in kernel memory.  This is used to provide user space
- * with some operations which require kernel help because of unimplemented
- * native feature and/or instructions in some Meta CPUs. The idea is for
- * this code to be executed directly in user mode for best efficiency but
- * which is too intimate with the kernel counter part to be left to user
- * libraries.  The kernel reserves the right to change this code as needed
- * without warning. Only the entry points and their results are guaranteed
- * to be stable.
- *
- * Each segment is 64-byte aligned.  This mechanism should be used only for
- * for things that are really small and justified, and not be abused freely.
- */
-	.text
-	.global	___user_gateway_start
-___user_gateway_start:
-
-	/* get_tls
-	 * Offset:	 0
-	 * Description:	 Get the TLS pointer for this process.
-	 */
-	.global	___kuser_get_tls
-	.type	___kuser_get_tls,function
-___kuser_get_tls:
-	MOVT	D1Ar1,#HI(USER_GATEWAY_PAGE + USER_GATEWAY_TLS)
-	ADD	D1Ar1,D1Ar1,#LO(USER_GATEWAY_PAGE + USER_GATEWAY_TLS)
-	MOV	D1Ar3,TXENABLE
-	AND	D1Ar3,D1Ar3,#(TXENABLE_THREAD_BITS)
-	LSR	D1Ar3,D1Ar3,#(TXENABLE_THREAD_S - 2)
-	GETD	D0Re0,[D1Ar1+D1Ar3]
-___kuser_get_tls_end:		/* Beyond this point the read will complete */
-	MOV	PC,D1RtP
-	.size	___kuser_get_tls,.-___kuser_get_tls
-	.global	___kuser_get_tls_end
-
-	/* cmpxchg
-	 * Offset:	 64
-	 * Description:  Replace the value at 'ptr' with 'newval' if the current
-	 *		 value is 'oldval'. Return zero if we succeeded,
-	 *		 non-zero otherwise.
-	 *
-	 * Reference prototype:
-	 *
-	 *	int __kuser_cmpxchg(int oldval, int newval, unsigned long *ptr)
-	 *
-	 */
-	.balign 64
-	.global ___kuser_cmpxchg
-	.type   ___kuser_cmpxchg,function
-___kuser_cmpxchg:
-#ifdef CONFIG_SMP
-	/*
-	 * We must use LNKGET/LNKSET with an SMP kernel because the other method
-	 * does not provide atomicity across multiple CPUs.
-	 */
-0:	LNKGETD	D0Re0,[D1Ar3]
-	CMP	D0Re0,D1Ar1
-	LNKSETDZ [D1Ar3],D0Ar2
-	BNZ	1f
-	DEFR	D0Re0,TXSTAT
-	ANDT	D0Re0,D0Re0,#HI(0x3f000000)
-	CMPT	D0Re0,#HI(0x02000000)
-	BNE	0b
-#ifdef CONFIG_METAG_LNKGET_AROUND_CACHE
-	DCACHE  [D1Ar3], D0Re0
-#endif
-1:	MOV	D0Re0,#1
-	XORZ	D0Re0,D0Re0,D0Re0
-	MOV	PC,D1RtP
-#else
-	GETD	D0Re0,[D1Ar3]
-	CMP	D0Re0,D1Ar1
-	SETDZ	[D1Ar3],D0Ar2
-___kuser_cmpxchg_end:		/* Beyond this point the write will complete */
-	MOV	D0Re0,#1
-	XORZ	D0Re0,D0Re0,D0Re0
-	MOV	PC,D1RtP
-#endif /* CONFIG_SMP */
-	.size	___kuser_cmpxchg,.-___kuser_cmpxchg
-	.global	___kuser_cmpxchg_end
-
-	.global	___user_gateway_end
-___user_gateway_end:
diff --git a/arch/metag/kernel/vmlinux.lds.S b/arch/metag/kernel/vmlinux.lds.S
deleted file mode 100644
index 1efadae2ea8e..000000000000
--- a/arch/metag/kernel/vmlinux.lds.S
+++ /dev/null
@@ -1,74 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/* ld script to make Meta Linux kernel */
-
-#include <asm/thread_info.h>
-#include <asm/page.h>
-#include <asm/cache.h>
-
-#include <asm-generic/vmlinux.lds.h>
-
-OUTPUT_FORMAT("elf32-metag", "elf32-metag", "elf32-metag")
-OUTPUT_ARCH(metag)
-ENTRY(__start)
-
-_jiffies = _jiffies_64;
-SECTIONS
-{
-  . = CONFIG_PAGE_OFFSET;
-  _text = .;
-  __text = .;
-  __stext = .;
-  HEAD_TEXT_SECTION
-  .text : {
-	TEXT_TEXT
-	SCHED_TEXT
-	CPUIDLE_TEXT
-	LOCK_TEXT
-	KPROBES_TEXT
-	IRQENTRY_TEXT
-	SOFTIRQENTRY_TEXT
-	*(.text.*)
-	*(.gnu.warning)
-	}
-
-  __etext = .;			/* End of text section */
-
-  __sdata = .;
-  RO_DATA_SECTION(PAGE_SIZE)
-  RW_DATA_SECTION(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
-  __edata = .;			/* End of data section */
-
-  EXCEPTION_TABLE(16)
-  NOTES
-
-  . = ALIGN(PAGE_SIZE);		/* Init code and data */
-  ___init_begin = .;
-  INIT_TEXT_SECTION(PAGE_SIZE)
-  INIT_DATA_SECTION(16)
-
-  .init.arch.info : {
-	  ___arch_info_begin = .;
-	  *(.arch.info.init)
-	  ___arch_info_end = .;
-  }
-
-  PERCPU_SECTION(L1_CACHE_BYTES)
-
-  ___init_end = .;
-
-  BSS_SECTION(0, PAGE_SIZE, 0)
-
-  __end = .;
-
-  . = ALIGN(PAGE_SIZE);
-  __heap_start = .;
-
-  DWARF_DEBUG
-
-  /* When something in the kernel is NOT compiled as a module, the
-   * module cleanup code and data are put into these segments.  Both
-   * can then be thrown away, as cleanup code is never called unless
-   * it's a module.
-   */
-  DISCARDS
-}