CRIS: Drop support for the CRIS port

The port was added back in 2000 so it's no longer even a good source
of inspiration for newer ports (if it ever was)

The last SoC (ARTPEC-3) with a CRIS main CPU was launched in 2008.

Coupled with time and working developer board hardware being
in low supply, it's time to drop the port from Linux.

So long and thanks for all the fish!

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

14 files changed, 0 insertions, 1314 deletions

diff --git a/arch/cris/kernel/Makefile b/arch/cris/kernel/Makefile
deleted file mode 100644
index f6bfee6c8c1b..000000000000
--- a/arch/cris/kernel/Makefile
+++ /dev/null
@@ -1,17 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-#
-# Makefile for the CRIS port.
-#
-
-CPPFLAGS_vmlinux.lds := -DDRAM_VIRTUAL_BASE=0x$(CONFIG_ETRAX_DRAM_VIRTUAL_BASE)
-extra-y := vmlinux.lds
-
-obj-y := process.o traps.o irq.o ptrace.o setup.o time.o sys_cris.o
-obj-y += stacktrace.o
-
-obj-$(CONFIG_MODULES)		+= crisksyms.o
-obj-$(CONFIG_MODULES)		+= module.o
-obj-$(CONFIG_SYSTEM_PROFILER)	+= profile.o
-
-clean:
-
diff --git a/arch/cris/kernel/asm-offsets.c b/arch/cris/kernel/asm-offsets.c
deleted file mode 100644
index 0a5129941485..000000000000
--- a/arch/cris/kernel/asm-offsets.c
+++ /dev/null
@@ -1,60 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/kbuild.h>
-#include <linux/sched.h>
-#include <asm/thread_info.h>
-
-/*
- * Generate definitions needed by assembly language modules.
- * This code generates raw asm output which is post-processed to extract
- * and format the required data.
- */
-
-#if !defined(CONFIG_ETRAX_ARCH_V10) && !defined(CONFIG_ETRAX_ARCH_V32)
-#error One of ARCH v10 and ARCH v32 must be true!
-#endif
-
-int main(void)
-{
-#define ENTRY(entry) DEFINE(PT_ ## entry, offsetof(struct pt_regs, entry))
-	ENTRY(orig_r10);
-	ENTRY(r13);
-	ENTRY(r12);
-	ENTRY(r11);
-	ENTRY(r10);
-	ENTRY(r9);
-#ifdef CONFIG_ETRAX_ARCH_V32
-	ENTRY(acr);
-	ENTRY(srs);
-#endif
-	ENTRY(mof);
-#ifdef CONFIG_ETRAX_ARCH_V10
-	ENTRY(dccr);
-#else
-	ENTRY(ccs);
-#endif
-	ENTRY(srp);
-	BLANK();
-#undef ENTRY
-#define ENTRY(entry) DEFINE(TI_ ## entry, offsetof(struct thread_info, entry))
-	ENTRY(task);
-	ENTRY(flags);
-	ENTRY(preempt_count);
-	BLANK();
-#undef ENTRY
-#define ENTRY(entry) DEFINE(THREAD_ ## entry, offsetof(struct thread_struct, entry))
-	ENTRY(ksp);
-	ENTRY(usp);
-#ifdef CONFIG_ETRAX_ARCH_V10
-	ENTRY(dccr);
-#else
-	ENTRY(ccs);
-#endif
-	BLANK();
-#undef ENTRY
-#define ENTRY(entry) DEFINE(TASK_ ## entry, offsetof(struct task_struct, entry))
-	ENTRY(pid);
-	BLANK();
-	DEFINE(LCLONE_VM, CLONE_VM);
-	DEFINE(LCLONE_UNTRACED, CLONE_UNTRACED);
-	return 0;
-}
diff --git a/arch/cris/kernel/crisksyms.c b/arch/cris/kernel/crisksyms.c
deleted file mode 100644
index 7024f7278c89..000000000000
--- a/arch/cris/kernel/crisksyms.c
+++ /dev/null
@@ -1,69 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/module.h>
-#include <linux/user.h>
-#include <linux/elfcore.h>
-#include <linux/sched.h>
-#include <linux/in6.h>
-#include <linux/interrupt.h>
-#include <linux/pm.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/tty.h>
-
-#include <asm/processor.h>
-#include <linux/uaccess.h>
-#include <asm/checksum.h>
-#include <asm/io.h>
-#include <asm/delay.h>
-#include <asm/irq.h>
-#include <asm/pgtable.h>
-#include <asm/fasttimer.h>
-
-extern void __Udiv(void);
-extern void __Umod(void);
-extern void __Div(void);
-extern void __Mod(void);
-extern void __ashldi3(void);
-extern void __ashrdi3(void);
-extern void __lshrdi3(void);
-extern void __negdi2(void);
-extern void iounmap(volatile void * __iomem);
-
-/* Platform dependent support */
-EXPORT_SYMBOL(loops_per_usec);
-
-/* Math functions */
-EXPORT_SYMBOL(__Udiv);
-EXPORT_SYMBOL(__Umod);
-EXPORT_SYMBOL(__Div);
-EXPORT_SYMBOL(__Mod);
-EXPORT_SYMBOL(__ashldi3);
-EXPORT_SYMBOL(__ashrdi3);
-EXPORT_SYMBOL(__lshrdi3);
-EXPORT_SYMBOL(__negdi2);
-
-/* Memory functions */
-EXPORT_SYMBOL(__ioremap);
-EXPORT_SYMBOL(iounmap);
-
-#undef memcpy
-#undef memset
-extern void * memset(void *, int, __kernel_size_t);
-extern void * memcpy(void *, const void *, __kernel_size_t);
-EXPORT_SYMBOL(memcpy);
-EXPORT_SYMBOL(memset);
-#ifdef CONFIG_ETRAX_ARCH_V32
-#undef strcmp
-EXPORT_SYMBOL(strcmp);
-#endif
-
-#ifdef CONFIG_ETRAX_FAST_TIMER
-/* Fast timer functions */
-EXPORT_SYMBOL(fast_timer_list);
-EXPORT_SYMBOL(start_one_shot_timer);
-EXPORT_SYMBOL(del_fast_timer);
-EXPORT_SYMBOL(schedule_usleep);
-#endif
-EXPORT_SYMBOL(csum_partial);
-EXPORT_SYMBOL(csum_partial_copy_from_user);
-EXPORT_SYMBOL(csum_partial_copy_nocheck);
diff --git a/arch/cris/kernel/irq.c b/arch/cris/kernel/irq.c
deleted file mode 100644
index 726cdf4bf2d8..000000000000
--- a/arch/cris/kernel/irq.c
+++ /dev/null
@@ -1,72 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- *
- *	linux/arch/cris/kernel/irq.c
- *
- *      Copyright (c) 2000,2007 Axis Communications AB
- *
- *      Authors: Bjorn Wesen (bjornw@axis.com)
- *
- * This file contains the code used by various IRQ handling routines:
- * asking for different IRQs should be done through these routines
- * instead of just grabbing them. Thus setups with different IRQ numbers
- * shouldn't result in any weird surprises, and installing new handlers
- * should be easier.
- *
- */
-
-/*
- * IRQs are in fact implemented a bit like signal handlers for the kernel.
- * Naturally it's not a 1:1 relation, but there are similarities.
- */
-
-#include <linux/module.h>
-#include <linux/ptrace.h>
-#include <linux/irq.h>
-#include <linux/sched/debug.h>
-
-#include <linux/kernel_stat.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/ioport.h>
-#include <linux/interrupt.h>
-#include <linux/timex.h>
-#include <linux/random.h>
-#include <linux/init.h>
-#include <linux/seq_file.h>
-#include <linux/errno.h>
-#include <linux/spinlock.h>
-
-#include <asm/io.h>
-#include <arch/system.h>
-
-/* called by the assembler IRQ entry functions defined in irq.h
- * to dispatch the interrupts to registered handlers
- */
-
-asmlinkage void do_IRQ(int irq, struct pt_regs * regs)
-{
-	unsigned long sp;
-	struct pt_regs *old_regs;
-
-	trace_hardirqs_off();
-
-	old_regs = set_irq_regs(regs);
-	irq_enter();
-	sp = rdsp();
-	if (unlikely((sp & (PAGE_SIZE - 1)) < (PAGE_SIZE/8))) {
-		printk("do_IRQ: stack overflow: %lX\n", sp);
-		show_stack(NULL, (unsigned long *)sp);
-	}
-	generic_handle_irq(irq);
-	irq_exit();
-	set_irq_regs(old_regs);
-}
-
-void weird_irq(void)
-{
-	local_irq_disable();
-	printk("weird irq\n");
-	while(1);
-}
-
diff --git a/arch/cris/kernel/module.c b/arch/cris/kernel/module.c
deleted file mode 100644
index af04cb6b6dc9..000000000000
--- a/arch/cris/kernel/module.c
+++ /dev/null
@@ -1,82 +0,0 @@
-/*  Kernel module help for i386.
-    Copyright (C) 2001 Rusty Russell.
-
-    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.
-
-    You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-*/
-#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/slab.h>
-
-#if 0
-#define DEBUGP printk
-#else
-#define DEBUGP(fmt , ...)
-#endif
-
-#ifdef CONFIG_ETRAX_KMALLOCED_MODULES
-void *module_alloc(unsigned long size)
-{
-	return kmalloc(size, GFP_KERNEL);
-}
-
-/* Free memory returned from module_alloc */
-void module_memfree(void *module_region)
-{
-	kfree(module_region);
-}
-#endif
-
-int apply_relocate_add(Elf32_Shdr *sechdrs,
-		       const char *strtab,
-		       unsigned int symindex,
-		       unsigned int relsec,
-		       struct module *me)
-{
-  	unsigned int i;
-	Elf32_Rela *rela = (void *)sechdrs[relsec].sh_addr;
-
-	DEBUGP ("Applying add relocate section %u to %u\n", relsec,
-		sechdrs[relsec].sh_info);
-
-	for (i = 0; i < sechdrs[relsec].sh_size / sizeof (*rela); i++) {
-		/* This is where to make the change */
-		uint32_t *loc
-			= ((void *)sechdrs[sechdrs[relsec].sh_info].sh_addr
-			   + rela[i].r_offset);
-		/* This is the symbol it is referring to.  Note that all
-		   undefined symbols have been resolved.  */
-		Elf32_Sym *sym
-			= ((Elf32_Sym *)sechdrs[symindex].sh_addr
-			   + ELF32_R_SYM (rela[i].r_info));
-		switch (ELF32_R_TYPE(rela[i].r_info)) {
-		case R_CRIS_32:
-			*loc = sym->st_value + rela[i].r_addend;
-			break;
-		case R_CRIS_32_PCREL:
-			*loc = sym->st_value - (unsigned)loc + rela[i].r_addend - 4;
-			 break;
-		default:
-			printk(KERN_ERR "module %s: Unknown relocation: %u\n",
-			       me->name, ELF32_R_TYPE(rela[i].r_info));
-			return -ENOEXEC;
-		}
-	}
-
-	return 0;
-}
diff --git a/arch/cris/kernel/process.c b/arch/cris/kernel/process.c
deleted file mode 100644
index 50e5cf09841d..000000000000
--- a/arch/cris/kernel/process.c
+++ /dev/null
@@ -1,81 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- *  linux/arch/cris/kernel/process.c
- *
- *  Copyright (C) 1995  Linus Torvalds
- *  Copyright (C) 2000-2002  Axis Communications AB
- *
- *  Authors:   Bjorn Wesen (bjornw@axis.com)
- *
- */
-
-/*
- * This file handles the architecture-dependent parts of process handling..
- */
-
-#include <linux/atomic.h>
-#include <asm/pgtable.h>
-#include <linux/uaccess.h>
-#include <asm/irq.h>
-#include <linux/module.h>
-#include <linux/spinlock.h>
-#include <linux/init_task.h>
-#include <linux/sched.h>
-#include <linux/sched/task.h>
-#include <linux/fs.h>
-#include <linux/user.h>
-#include <linux/elfcore.h>
-#include <linux/mqueue.h>
-#include <linux/reboot.h>
-#include <linux/rcupdate.h>
-
-//#define DEBUG
-
-extern void default_idle(void);
-
-void (*pm_power_off)(void);
-EXPORT_SYMBOL(pm_power_off);
-
-void arch_cpu_idle(void)
-{
-	default_idle();
-}
-
-void hard_reset_now (void);
-
-void machine_restart(char *cmd)
-{
-	hard_reset_now();
-}
-
-/*
- * Similar to machine_power_off, but don't shut off power.  Add code
- * here to freeze the system for e.g. post-mortem debug purpose when
- * possible.  This halt has nothing to do with the idle halt.
- */
-
-void machine_halt(void)
-{
-}
-
-/* If or when software power-off is implemented, add code here.  */
-
-void machine_power_off(void)
-{
-}
-
-/*
- * When a process does an "exec", machine state like FPU and debug
- * registers need to be reset.  This is a hook function for that.
- * Currently we don't have any such state to reset, so this is empty.
- */
-
-void flush_thread(void)
-{
-}
-
-/* Fill in the fpu structure for a core dump. */
-int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpu)
-{
-        return 0;
-}
diff --git a/arch/cris/kernel/profile.c b/arch/cris/kernel/profile.c
deleted file mode 100644
index d2f978ad129a..000000000000
--- a/arch/cris/kernel/profile.c
+++ /dev/null
@@ -1,87 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/init.h>
-#include <linux/errno.h>
-#include <linux/kernel.h>
-#include <linux/proc_fs.h>
-#include <linux/slab.h>
-#include <linux/types.h>
-#include <asm/ptrace.h>
-#include <linux/uaccess.h>
-
-#define SAMPLE_BUFFER_SIZE 8192
-
-static char *sample_buffer;
-static char *sample_buffer_pos;
-static int prof_running = 0;
-
-void cris_profile_sample(struct pt_regs *regs)
-{
-	if (!prof_running)
-		return;
-
-	if (user_mode(regs))
-		*(unsigned int*)sample_buffer_pos = current->pid;
-	else
-		*(unsigned int*)sample_buffer_pos = 0;
-
-	*(unsigned int *)(sample_buffer_pos + 4) = instruction_pointer(regs);
-	sample_buffer_pos += 8;
-
-	if (sample_buffer_pos == sample_buffer + SAMPLE_BUFFER_SIZE)
-		sample_buffer_pos = sample_buffer;
-}
-
-static ssize_t
-read_cris_profile(struct file *file, char __user *buf,
-		  size_t count, loff_t *ppos)
-{
-	unsigned long p = *ppos;
-	ssize_t ret;
-
-	ret = simple_read_from_buffer(buf, count, ppos, sample_buffer,
-						SAMPLE_BUFFER_SIZE);
-	if (ret < 0)
-		return ret;
-
-	memset(sample_buffer + p, 0, ret);
-
-	return ret;
-}
-
-static ssize_t
-write_cris_profile(struct file *file, const char __user *buf,
-		   size_t count, loff_t *ppos)
-{
-	sample_buffer_pos = sample_buffer;
-	memset(sample_buffer, 0, SAMPLE_BUFFER_SIZE);
-	return count < SAMPLE_BUFFER_SIZE ? count : SAMPLE_BUFFER_SIZE;
-}
-
-static const struct file_operations cris_proc_profile_operations = {
-	.read		= read_cris_profile,
-	.write		= write_cris_profile,
-	.llseek		= default_llseek,
-};
-
-static int __init init_cris_profile(void)
-{
-	struct proc_dir_entry *entry;
-
-	sample_buffer = kmalloc(SAMPLE_BUFFER_SIZE, GFP_KERNEL);
-	if (!sample_buffer) {
-		return -ENOMEM;
-	}
-
-	sample_buffer_pos = sample_buffer;
-
-	entry = proc_create("system_profile", S_IWUSR | S_IRUGO, NULL,
-			    &cris_proc_profile_operations);
-	if (entry) {
-		proc_set_size(entry, SAMPLE_BUFFER_SIZE);
-	}
-	prof_running = 1;
-
-	return 0;
-}
-__initcall(init_cris_profile);
-
diff --git a/arch/cris/kernel/ptrace.c b/arch/cris/kernel/ptrace.c
deleted file mode 100644
index af42789a1544..000000000000
--- a/arch/cris/kernel/ptrace.c
+++ /dev/null
@@ -1,68 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- *  linux/arch/cris/kernel/ptrace.c
- *
- * Parts taken from the m68k port.
- *
- * Copyright (c) 2000, 2001, 2002 Axis Communications AB
- *
- * Authors:   Bjorn Wesen
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/smp.h>
-#include <linux/errno.h>
-#include <linux/ptrace.h>
-#include <linux/user.h>
-#include <linux/tracehook.h>
-
-#include <linux/uaccess.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm/processor.h>
-
-
-/* notification of userspace execution resumption
- * - triggered by current->work.notify_resume
- */
-extern int do_signal(int canrestart, struct pt_regs *regs);
-
-
-void do_notify_resume(int canrestart, struct pt_regs *regs,
-		      __u32 thread_info_flags)
-{
-	/* deal with pending signal delivery */
-	if (thread_info_flags & _TIF_SIGPENDING)
-		do_signal(canrestart,regs);
-
-	if (thread_info_flags & _TIF_NOTIFY_RESUME) {
-		clear_thread_flag(TIF_NOTIFY_RESUME);
-		tracehook_notify_resume(regs);
-	}
-}
-
-void do_work_pending(int syscall, struct pt_regs *regs,
-		     unsigned int thread_flags)
-{
-	do {
-		if (likely(thread_flags & _TIF_NEED_RESCHED)) {
-			schedule();
-		} else {
-			if (unlikely(!user_mode(regs)))
-				return;
-			local_irq_enable();
-			if (thread_flags & _TIF_SIGPENDING) {
-				do_signal(syscall, regs);
-				syscall = 0;
-			} 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);
-}
diff --git a/arch/cris/kernel/setup.c b/arch/cris/kernel/setup.c
deleted file mode 100644
index 1b61a7207afb..000000000000
--- a/arch/cris/kernel/setup.c
+++ /dev/null
@@ -1,214 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- *
- *  linux/arch/cris/kernel/setup.c
- *
- *  Copyright (C) 1995  Linus Torvalds
- *  Copyright (c) 2001  Axis Communications AB
- */
-
-/*
- * This file handles the architecture-dependent parts of initialization
- */
-
-#include <linux/init.h>
-#include <linux/mm.h>
-#include <linux/bootmem.h>
-#include <asm/pgtable.h>
-#include <linux/seq_file.h>
-#include <linux/screen_info.h>
-#include <linux/utsname.h>
-#include <linux/pfn.h>
-#include <linux/cpu.h>
-#include <linux/of.h>
-#include <linux/of_fdt.h>
-#include <asm/setup.h>
-#include <arch/system.h>
-#include <asm/sections.h>
-
-/*
- * Setup options
- */
-struct screen_info screen_info;
-
-extern int root_mountflags;
-
-char __initdata cris_command_line[COMMAND_LINE_SIZE] = { 0, };
-
-extern const unsigned long text_start, edata; /* set by the linker script */
-extern unsigned long dram_start, dram_end;
-
-extern unsigned long romfs_start, romfs_length, romfs_in_flash; /* from head.S */
-
-static struct cpu cpu_devices[NR_CPUS];
-
-extern void show_etrax_copyright(void);		/* arch-vX/kernel/setup.c */
-
-/* This mainly sets up the memory area, and can be really confusing.
- *
- * The physical DRAM is virtually mapped into dram_start to dram_end
- * (usually c0000000 to c0000000 + DRAM size). The physical address is
- * given by the macro __pa().
- *
- * In this DRAM, the kernel code and data is loaded, in the beginning.
- * It really starts at c0004000 to make room for some special pages -
- * the start address is text_start. The kernel data ends at _end. After
- * this the ROM filesystem is appended (if there is any).
- *
- * Between this address and dram_end, we have RAM pages usable to the
- * boot code and the system.
- *
- */
-
-void __init setup_arch(char **cmdline_p)
-{
-	extern void init_etrax_debug(void);
-	unsigned long bootmap_size;
-	unsigned long start_pfn, max_pfn;
-	unsigned long memory_start;
-
-#ifdef CONFIG_OF
-	early_init_dt_scan(__dtb_start);
-#endif
-
-	/* register an initial console printing routine for printk's */
-
-	init_etrax_debug();
-
-	/* we should really poll for DRAM size! */
-
-	high_memory = &dram_end;
-
-	if(romfs_in_flash || !romfs_length) {
-		/* if we have the romfs in flash, or if there is no rom filesystem,
-		 * our free area starts directly after the BSS
-		 */
-		memory_start = (unsigned long) &_end;
-	} else {
-		/* otherwise the free area starts after the ROM filesystem */
-		printk("ROM fs in RAM, size %lu bytes\n", romfs_length);
-		memory_start = romfs_start + romfs_length;
-	}
-
-	/* process 1's initial memory region is the kernel code/data */
-
-	init_mm.start_code = (unsigned long) &text_start;
-	init_mm.end_code =   (unsigned long) &_etext;
-	init_mm.end_data =   (unsigned long) &_edata;
-	init_mm.brk =        (unsigned long) &_end;
-
-	/* min_low_pfn points to the start of DRAM, start_pfn points
-	 * to the first DRAM pages after the kernel, and max_low_pfn
-	 * to the end of DRAM.
-	 */
-
-        /*
-         * partially used pages are not usable - thus
-         * we are rounding upwards:
-         */
-
-        start_pfn = PFN_UP(memory_start);  /* usually c0000000 + kernel + romfs */
-	max_pfn =   PFN_DOWN((unsigned long)high_memory); /* usually c0000000 + dram size */
-
-        /*
-         * Initialize the boot-time allocator (start, end)
-	 *
-	 * We give it access to all our DRAM, but we could as well just have
-	 * given it a small slice. No point in doing that though, unless we
-	 * have non-contiguous memory and want the boot-stuff to be in, say,
-	 * the smallest area.
-	 *
-	 * It will put a bitmap of the allocated pages in the beginning
-	 * of the range we give it, but it won't mark the bitmaps pages
-	 * as reserved. We have to do that ourselves below.
-	 *
-	 * We need to use init_bootmem_node instead of init_bootmem
-	 * because our map starts at a quite high address (min_low_pfn).
-         */
-
-	max_low_pfn = max_pfn;
-	min_low_pfn = PAGE_OFFSET >> PAGE_SHIFT;
-
-	bootmap_size = init_bootmem_node(NODE_DATA(0), start_pfn,
-					 min_low_pfn,
-					 max_low_pfn);
-
-	/* And free all memory not belonging to the kernel (addr, size) */
-
-	free_bootmem(PFN_PHYS(start_pfn), PFN_PHYS(max_pfn - start_pfn));
-
-        /*
-         * Reserve the bootmem bitmap itself as well. We do this in two
-         * steps (first step was init_bootmem()) because this catches
-         * the (very unlikely) case of us accidentally initializing the
-         * bootmem allocator with an invalid RAM area.
-	 *
-	 * Arguments are start, size
-         */
-
-	reserve_bootmem(PFN_PHYS(start_pfn), bootmap_size, BOOTMEM_DEFAULT);
-
-	unflatten_and_copy_device_tree();
-
-	/* paging_init() sets up the MMU and marks all pages as reserved */
-
-	paging_init();
-
-	*cmdline_p = cris_command_line;
-
-#ifdef CONFIG_ETRAX_CMDLINE
-        if (!strcmp(cris_command_line, "")) {
-		strlcpy(cris_command_line, CONFIG_ETRAX_CMDLINE, COMMAND_LINE_SIZE);
-		cris_command_line[COMMAND_LINE_SIZE - 1] = '\0';
-	}
-#endif
-
-	/* Save command line for future references. */
-	memcpy(boot_command_line, cris_command_line, COMMAND_LINE_SIZE);
-	boot_command_line[COMMAND_LINE_SIZE - 1] = '\0';
-
-	/* give credit for the CRIS port */
-	show_etrax_copyright();
-
-	/* Setup utsname */
-	strcpy(init_utsname()->machine, cris_machine_name);
-}
-
-#ifdef CONFIG_PROC_FS
-static void *c_start(struct seq_file *m, loff_t *pos)
-{
-	return *pos < nr_cpu_ids ? (void *)(int)(*pos + 1) : NULL;
-}
-
-static void *c_next(struct seq_file *m, void *v, loff_t *pos)
-{
-	++*pos;
-	return c_start(m, pos);
-}
-
-static void c_stop(struct seq_file *m, void *v)
-{
-}
-
-extern int show_cpuinfo(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 */
-
-static int __init topology_init(void)
-{
-	int i;
-
-	for_each_possible_cpu(i) {
-		 return register_cpu(&cpu_devices[i], i);
-	}
-
-	return 0;
-}
-
-subsys_initcall(topology_init);
diff --git a/arch/cris/kernel/stacktrace.c b/arch/cris/kernel/stacktrace.c
deleted file mode 100644
index f1cc3aaacd8d..000000000000
--- a/arch/cris/kernel/stacktrace.c
+++ /dev/null
@@ -1,76 +0,0 @@
-#include <linux/sched.h>
-#include <linux/sched/debug.h>
-#include <linux/stacktrace.h>
-#include <asm/stacktrace.h>
-
-void walk_stackframe(unsigned long sp,
-		     int (*fn)(unsigned long addr, void *data),
-		     void *data)
-{
-	unsigned long high = ALIGN(sp, THREAD_SIZE);
-
-	for (; sp <= high - 4; sp += 4) {
-		unsigned long addr = *(unsigned long *) sp;
-
-		if (!kernel_text_address(addr))
-			continue;
-
-		if (fn(addr, data))
-			break;
-	}
-}
-
-struct stack_trace_data {
-	struct stack_trace *trace;
-	unsigned int no_sched_functions;
-	unsigned int skip;
-};
-
-#ifdef CONFIG_STACKTRACE
-
-static int save_trace(unsigned long addr, void *d)
-{
-	struct stack_trace_data *data = d;
-	struct stack_trace *trace = data->trace;
-
-	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;
-	unsigned long sp;
-
-	data.trace = trace;
-	data.skip = trace->skip;
-
-	if (tsk != current) {
-		data.no_sched_functions = 1;
-		sp = tsk->thread.ksp;
-	} else {
-		data.no_sched_functions = 0;
-		sp = rdsp();
-	}
-
-	walk_stackframe(sp, 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 /* CONFIG_STACKTRACE */
diff --git a/arch/cris/kernel/sys_cris.c b/arch/cris/kernel/sys_cris.c
deleted file mode 100644
index ecea13f1d760..000000000000
--- a/arch/cris/kernel/sys_cris.c
+++ /dev/null
@@ -1,36 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/* $Id: sys_cris.c,v 1.6 2004/03/11 11:38:40 starvik Exp $
- *
- * linux/arch/cris/kernel/sys_cris.c
- *
- * This file contains various random system calls that
- * have a non-standard calling sequence on some platforms.
- * Since we don't have to do any backwards compatibility, our
- * versions are done in the most "normal" way possible.
- *
- */
-
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/syscalls.h>
-#include <linux/mm.h>
-#include <linux/fs.h>
-#include <linux/smp.h>
-#include <linux/sem.h>
-#include <linux/msg.h>
-#include <linux/shm.h>
-#include <linux/stat.h>
-#include <linux/mman.h>
-#include <linux/file.h>
-#include <linux/ipc.h>
-
-#include <linux/uaccess.h>
-#include <asm/segment.h>
-
-asmlinkage long
-sys_mmap2(unsigned long addr, unsigned long len, unsigned long prot,
-          unsigned long flags, unsigned long fd, unsigned long pgoff)
-{
-	/* bug(?): 8Kb pages here */
-        return sys_mmap_pgoff(addr, len, prot, flags, fd, pgoff);
-}
diff --git a/arch/cris/kernel/time.c b/arch/cris/kernel/time.c
deleted file mode 100644
index 593239274f98..000000000000
--- a/arch/cris/kernel/time.c
+++ /dev/null
@@ -1,73 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- *  linux/arch/cris/kernel/time.c
- *
- *  Copyright (C) 1991, 1992, 1995  Linus Torvalds
- *  Copyright (C) 1999, 2000, 2001 Axis Communications AB
- *
- * 1994-07-02    Alan Modra
- *	fixed set_rtc_mmss, fixed time.year for >= 2000, new mktime
- * 1995-03-26    Markus Kuhn
- *      fixed 500 ms bug at call to set_rtc_mmss, fixed DS12887
- *      precision CMOS clock update
- * 1996-05-03    Ingo Molnar
- *      fixed time warps in do_[slow|fast]_gettimeoffset()
- * 1997-09-10	Updated NTP code according to technical memorandum Jan '96
- *		"A Kernel Model for Precision Timekeeping" by Dave Mills
- *
- * Linux/CRIS specific code:
- *
- * Authors:    Bjorn Wesen
- *             Johan Adolfsson
- *
- */
-
-#include <linux/errno.h>
-#include <linux/module.h>
-#include <linux/param.h>
-#include <linux/jiffies.h>
-#include <linux/bcd.h>
-#include <linux/timex.h>
-#include <linux/init.h>
-#include <linux/profile.h>
-#include <linux/sched/clock.h>
-
-
-#define D(x)
-
-#define TICK_SIZE tick
-
-extern unsigned long loops_per_jiffy; /* init/main.c */
-unsigned long loops_per_usec;
-
-extern void cris_profile_sample(struct pt_regs* regs);
-
-void
-cris_do_profile(struct pt_regs* regs)
-{
-
-#ifdef CONFIG_SYSTEM_PROFILER
-        cris_profile_sample(regs);
-#endif
-
-#ifdef CONFIG_PROFILING
-	profile_tick(CPU_PROFILING);
-#endif
-}
-
-#ifndef CONFIG_GENERIC_SCHED_CLOCK
-unsigned long long sched_clock(void)
-{
-	return (unsigned long long)jiffies * (NSEC_PER_SEC / HZ) +
-		get_ns_in_jiffie();
-}
-#endif
-
-static int
-__init init_udelay(void)
-{
-	loops_per_usec = (loops_per_jiffy * HZ) / 1000000;
-	return 0;
-}
-
-__initcall(init_udelay);
diff --git a/arch/cris/kernel/traps.c b/arch/cris/kernel/traps.c
deleted file mode 100644
index d4bc80469218..000000000000
--- a/arch/cris/kernel/traps.c
+++ /dev/null
@@ -1,241 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- *  linux/arch/cris/traps.c
- *
- *  Here we handle the break vectors not used by the system call
- *  mechanism, as well as some general stack/register dumping
- *  things.
- *
- *  Copyright (C) 2000-2007 Axis Communications AB
- *
- *  Authors:   Bjorn Wesen
- *             Hans-Peter Nilsson
- *
- */
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/utsname.h>
-#include <linux/sched/debug.h>
-#ifdef CONFIG_KALLSYMS
-#include <linux/kallsyms.h>
-#endif
-
-#include <asm/pgtable.h>
-#include <linux/uaccess.h>
-#include <arch/system.h>
-
-extern void arch_enable_nmi(void);
-extern void stop_watchdog(void);
-extern void reset_watchdog(void);
-extern void show_registers(struct pt_regs *regs);
-
-#ifdef CONFIG_DEBUG_BUGVERBOSE
-extern void handle_BUG(struct pt_regs *regs);
-#else
-#define handle_BUG(regs)
-#endif
-
-static int kstack_depth_to_print = 24;
-
-void (*nmi_handler)(struct pt_regs *);
-
-void show_trace(unsigned long *stack)
-{
-	unsigned long addr, module_start, module_end;
-	extern char _stext[], _etext[];
-	int i;
-
-	pr_err("\nCall Trace: ");
-
-	i = 1;
-	module_start = VMALLOC_START;
-	module_end = VMALLOC_END;
-
-	while (((long)stack & (THREAD_SIZE - 1)) != 0) {
-		if (__get_user(addr, stack)) {
-			/* This message matches "failing address" marked
-			   s390 in ksymoops, so lines containing it will
-			   not be filtered out by ksymoops.  */
-			pr_err("Failing address 0x%lx\n", (unsigned long)stack);
-			break;
-		}
-		stack++;
-
-		/*
-		 * If the address is either in the text segment of the
-		 * kernel, or in the region which contains vmalloc'ed
-		 * memory, it *may* be the address of a calling
-		 * routine; if so, print it so that someone tracing
-		 * down the cause of the crash will be able to figure
-		 * out the call path that was taken.
-		 */
-		if (((addr >= (unsigned long)_stext) &&
-		     (addr <= (unsigned long)_etext)) ||
-		    ((addr >= module_start) && (addr <= module_end))) {
-#ifdef CONFIG_KALLSYMS
-			print_ip_sym(addr);
-#else
-			if (i && ((i % 8) == 0))
-				pr_err("\n       ");
-			pr_err("[<%08lx>] ", addr);
-			i++;
-#endif
-		}
-	}
-}
-
-/*
- * These constants are for searching for possible module text
- * segments. MODULE_RANGE is a guess of how much space is likely
- * to be vmalloced.
- */
-
-#define MODULE_RANGE (8*1024*1024)
-
-/*
- * The output (format, strings and order) is adjusted to be usable with
- * ksymoops-2.4.1 with some necessary CRIS-specific patches.  Please don't
- * change it unless you're serious about adjusting ksymoops and syncing
- * with the ksymoops maintainer.
- */
-
-void
-show_stack(struct task_struct *task, unsigned long *sp)
-{
-	unsigned long *stack, addr;
-	int i;
-
-	/*
-	 * debugging aid: "show_stack(NULL);" prints a
-	 * back trace.
-	 */
-
-	if (sp == NULL) {
-		if (task)
-			sp = (unsigned long*)task->thread.ksp;
-		else
-			sp = (unsigned long*)rdsp();
-	}
-
-	stack = sp;
-
-	pr_err("\nStack from %08lx:\n       ", (unsigned long)stack);
-	for (i = 0; i < kstack_depth_to_print; i++) {
-		if (((long)stack & (THREAD_SIZE-1)) == 0)
-			break;
-		if (i && ((i % 8) == 0))
-			pr_err("\n       ");
-		if (__get_user(addr, stack)) {
-			/* This message matches "failing address" marked
-			   s390 in ksymoops, so lines containing it will
-			   not be filtered out by ksymoops.  */
-			pr_err("Failing address 0x%lx\n", (unsigned long)stack);
-			break;
-		}
-		stack++;
-		pr_err("%08lx ", addr);
-	}
-	show_trace(sp);
-}
-
-#if 0
-/* displays a short stack trace */
-
-int
-show_stack(void)
-{
-	unsigned long *sp = (unsigned long *)rdusp();
-	int i;
-
-	pr_err("Stack dump [0x%08lx]:\n", (unsigned long)sp);
-	for (i = 0; i < 16; i++)
-		pr_err("sp + %d: 0x%08lx\n", i*4, sp[i]);
-	return 0;
-}
-#endif
-
-void set_nmi_handler(void (*handler)(struct pt_regs *))
-{
-	nmi_handler = handler;
-	arch_enable_nmi();
-}
-
-#ifdef CONFIG_DEBUG_NMI_OOPS
-void oops_nmi_handler(struct pt_regs *regs)
-{
-	stop_watchdog();
-	oops_in_progress = 1;
-	pr_err("NMI!\n");
-	show_registers(regs);
-	oops_in_progress = 0;
-	oops_exit();
-	pr_err("\n"); /* Flush mtdoops.  */
-}
-
-static int __init oops_nmi_register(void)
-{
-	set_nmi_handler(oops_nmi_handler);
-	return 0;
-}
-
-__initcall(oops_nmi_register);
-
-#endif
-
-/*
- * This gets called from entry.S when the watchdog has bitten. Show something
- * similar to an Oops dump, and if the kernel is configured to be a nice
- * doggy, then halt instead of reboot.
- */
-void watchdog_bite_hook(struct pt_regs *regs)
-{
-#ifdef CONFIG_ETRAX_WATCHDOG_NICE_DOGGY
-	local_irq_disable();
-	stop_watchdog();
-	show_registers(regs);
-
-	while (1)
-		; /* Do nothing. */
-#else
-	show_registers(regs);
-#endif
-}
-
-/* This is normally the Oops function. */
-void die_if_kernel(const char *str, struct pt_regs *regs, long err)
-{
-	if (user_mode(regs))
-		return;
-
-#ifdef CONFIG_ETRAX_WATCHDOG_NICE_DOGGY
-	/*
-	 * This printout might take too long and could trigger
-	 * the watchdog normally. If NICE_DOGGY is set, simply
-	 * stop the watchdog during the printout.
-	 */
-	stop_watchdog();
-#endif
-
-	oops_enter();
-	handle_BUG(regs);
-
-	pr_err("Linux %s %s\n", utsname()->release, utsname()->version);
-	pr_err("%s: %04lx\n", str, err & 0xffff);
-
-	show_registers(regs);
-
-	oops_exit();
-	oops_in_progress = 0;
-	pr_err("\n"); /* Flush mtdoops.  */
-
-#ifdef CONFIG_ETRAX_WATCHDOG_NICE_DOGGY
-	reset_watchdog();
-#endif
-	do_exit(SIGSEGV);
-}
-
-void __init trap_init(void)
-{
-	/* Nothing needs to be done */
-}
diff --git a/arch/cris/kernel/vmlinux.lds.S b/arch/cris/kernel/vmlinux.lds.S
deleted file mode 100644
index 9b232e0f673e..000000000000
--- a/arch/cris/kernel/vmlinux.lds.S
+++ /dev/null
@@ -1,138 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/* ld script to make the Linux/CRIS kernel
- * Authors: Bjorn Wesen (bjornw@axis.com)
- *
- * It is VERY DANGEROUS to fiddle around with the symbols in this
- * script. It is for example quite vital that all generated sections
- * that are used are actually named here, otherwise the linker will
- * put them at the end, where the init stuff is which is FREED after
- * the kernel has booted.
- */
-
-#include <asm-generic/vmlinux.lds.h>
-#include <asm/page.h>
-#include <asm/thread_info.h>
-
-#ifdef CONFIG_ETRAX_VMEM_SIZE
-#define __CONFIG_ETRAX_VMEM_SIZE CONFIG_ETRAX_VMEM_SIZE
-#else
-#define __CONFIG_ETRAX_VMEM_SIZE 0
-#endif
-
-
-jiffies = jiffies_64;
-SECTIONS
-{
-	. = DRAM_VIRTUAL_BASE;
-	dram_start = .;
-#ifdef CONFIG_ETRAX_ARCH_V10
-	ibr_start = .;
-#else
-	ebp_start = .;
-	/* The boot section is only necessary until the VCS top */
-	/* level testbench includes both flash and DRAM. */
-	.boot : { *(.boot) }
-#endif
-
-	/* see head.S and pages reserved at the start */
-	. = DRAM_VIRTUAL_BASE + 0x4000;
-
-	_text = .;			/* Text and read-only data. */
-	text_start = .;			/* Lots of aliases. */
-	_stext = .;
-	__stext = .;
-	.text : {
-		HEAD_TEXT
-		TEXT_TEXT
-		SCHED_TEXT
-		CPUIDLE_TEXT
-		LOCK_TEXT
-		*(.fixup)
-		*(.text.__*)
-	}
-
-	_etext = . ;			/* End of text section. */
-	__etext = .;
-
-	EXCEPTION_TABLE(4)
-
-	_sdata = .;
-	RODATA
-
-	. = ALIGN (4);
-	___data_start = . ;
-	__Sdata = . ;
-	.data : {			/* Data */
-		CACHELINE_ALIGNED_DATA(32)
-		READ_MOSTLY_DATA(32)
-		DATA_DATA
-	}
-	__edata = . ;			/* End of data section. */
-	_edata = . ;
-
-	BUG_TABLE
-
-	INIT_TASK_DATA_SECTION(PAGE_SIZE)
-
-	. = ALIGN(PAGE_SIZE);		/* Init code and data. */
-	__init_begin = .;
-	INIT_TEXT_SECTION(PAGE_SIZE)
-	.init.data : { INIT_DATA }
-	.init.setup : { INIT_SETUP(16) }
-	.initcall.init : {
-		INIT_CALLS
-	}
-
-	.con_initcall.init : {
-		CON_INITCALL
-	}
-	SECURITY_INIT
-
-	/* .exit.text is discarded at runtime, not link time,
-	 * to deal with references from __bug_table
-	 */
-	.exit.text : {
-		EXIT_TEXT
-	}
-	.exit.data : {
-		EXIT_DATA
-	}
-
-#ifdef CONFIG_ETRAX_ARCH_V10
-#ifdef CONFIG_BLK_DEV_INITRD
-	.init.ramfs : {
-		__initramfs_start = .;
-		*(.init.ramfs)
-		__initramfs_end = .;
-	}
-#endif
-#endif
-	__vmlinux_end = .;		/* Last address of the physical file. */
-#ifdef CONFIG_ETRAX_ARCH_V32
-	PERCPU_SECTION(32)
-
-	.init.ramfs : {
-		INIT_RAM_FS
-	}
-#endif
-
-	/*
-	 * We fill to the next page, so we can discard all init
-	 * pages without needing to consider what payload might be
-	 * appended to the kernel image.
-	 */
-	. = ALIGN(PAGE_SIZE);
-
-	__init_end = .;
-
-	__data_end = . ;		/* Move to _edata ? */
-	BSS_SECTION(1, 1, 1)
-
-	. =  ALIGN (0x20);
-	_end = .;
-	__end = .;
-
-	dram_end = dram_start + (CONFIG_ETRAX_DRAM_SIZE - __CONFIG_ETRAX_VMEM_SIZE)*1024*1024;
-
-	DISCARDS
-}