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>

1 files changed, 0 insertions, 96 deletions

diff --git a/arch/cris/arch-v10/mm/fault.c b/arch/cris/arch-v10/mm/fault.c
deleted file mode 100644
index e6c225169642..000000000000
--- a/arch/cris/arch-v10/mm/fault.c
+++ /dev/null
@@ -1,96 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- *  linux/arch/cris/mm/fault.c
- *
- *  Low level bus fault handler
- *
- *
- *  Copyright (C) 2000-2007  Axis Communications AB
- *
- *  Authors:  Bjorn Wesen
- *
- */
-
-#include <linux/mm.h>
-#include <linux/uaccess.h>
-#include <asm/pgtable.h>
-#include <arch/svinto.h>
-#include <asm/mmu_context.h>
-
-/* debug of low-level TLB reload */
-#undef DEBUG
-
-#ifdef DEBUG
-#define D(x) x
-#else
-#define D(x)
-#endif
-
-extern const struct exception_table_entry
-	*search_exception_tables(unsigned long addr);
-
-asmlinkage void do_page_fault(unsigned long address, struct pt_regs *regs,
-                              int protection, int writeaccess);
-
-/* fast TLB-fill fault handler
- * this is called from entry.S with interrupts disabled
- */
-
-void
-handle_mmu_bus_fault(struct pt_regs *regs)
-{
-	int cause;
-	int select;
-#ifdef DEBUG
-	int index;
-	int page_id;
-	int acc, inv;
-#endif
-	pgd_t* pgd = (pgd_t*)per_cpu(current_pgd, smp_processor_id());
-	pmd_t *pmd;
-	pte_t pte;
-	int miss, we, writeac;
-	unsigned long address;
-	unsigned long flags;
-
-	cause = *R_MMU_CAUSE;
-
-	address = cause & PAGE_MASK; /* get faulting address */
-	select = *R_TLB_SELECT;
-
-#ifdef DEBUG
-	page_id = IO_EXTRACT(R_MMU_CAUSE,  page_id,   cause);
-	acc     = IO_EXTRACT(R_MMU_CAUSE,  acc_excp,  cause);
-	inv     = IO_EXTRACT(R_MMU_CAUSE,  inv_excp,  cause);
-	index   = IO_EXTRACT(R_TLB_SELECT, index,     select);
-#endif
-	miss    = IO_EXTRACT(R_MMU_CAUSE,  miss_excp, cause);
-	we      = IO_EXTRACT(R_MMU_CAUSE,  we_excp,   cause);
-	writeac = IO_EXTRACT(R_MMU_CAUSE,  wr_rd,     cause);
-
-	D(printk("bus_fault from IRP 0x%lx: addr 0x%lx, miss %d, inv %d, we %d, acc %d, dx %d pid %d\n",
-		 regs->irp, address, miss, inv, we, acc, index, page_id));
-
-	/* leave it to the MM system fault handler */
-	if (miss)
-		do_page_fault(address, regs, 0, writeac);
-        else
-		do_page_fault(address, regs, 1, we);
-
-        /* Reload TLB with new entry to avoid an extra miss exception.
-	 * do_page_fault may have flushed the TLB so we have to restore
-	 * the MMU registers.
-	 */
-	local_irq_save(flags);
-	pmd = (pmd_t *)(pgd + pgd_index(address));
-	if (pmd_none(*pmd))
-		goto exit;
-	pte = *pte_offset_kernel(pmd, address);
-	if (!pte_present(pte))
-		goto exit;
-	*R_TLB_SELECT = select;
-	*R_TLB_HI = cause;
-	*R_TLB_LO = pte_val(pte);
-exit:
-	local_irq_restore(flags);
-}