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, 196 deletions

diff --git a/arch/cris/arch-v32/kernel/traps.c b/arch/cris/arch-v32/kernel/traps.c
deleted file mode 100644
index ba54c7eccbaa..000000000000
--- a/arch/cris/arch-v32/kernel/traps.c
+++ /dev/null
@@ -1,196 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright (C) 2003-2006, Axis Communications AB.
- */
-
-#include <linux/ptrace.h>
-#include <linux/extable.h>
-#include <linux/uaccess.h>
-#include <linux/sched/debug.h>
-
-#include <hwregs/supp_reg.h>
-#include <hwregs/intr_vect_defs.h>
-#include <asm/irq.h>
-
-void show_registers(struct pt_regs *regs)
-{
-	/*
-	 * It's possible to use either the USP register or current->thread.usp.
-	 * USP might not correspond to the current process for all cases this
-	 * function is called, and current->thread.usp isn't up to date for the
-	 * current process. Experience shows that using USP is the way to go.
-	 */
-	unsigned long usp = rdusp();
-	unsigned long d_mmu_cause;
-	unsigned long i_mmu_cause;
-
-	printk("CPU: %d\n", smp_processor_id());
-
-	printk("ERP: %08lx SRP: %08lx  CCS: %08lx USP: %08lx MOF: %08lx\n",
-	       regs->erp, regs->srp, regs->ccs, usp, regs->mof);
-
-	printk(" r0: %08lx  r1: %08lx   r2: %08lx  r3: %08lx\n",
-	       regs->r0, regs->r1, regs->r2, regs->r3);
-
-	printk(" r4: %08lx  r5: %08lx   r6: %08lx  r7: %08lx\n",
-	       regs->r4, regs->r5, regs->r6, regs->r7);
-
-	printk(" r8: %08lx  r9: %08lx  r10: %08lx r11: %08lx\n",
-	       regs->r8, regs->r9, regs->r10, regs->r11);
-
-	printk("r12: %08lx r13: %08lx oR10: %08lx acr: %08lx\n",
-	       regs->r12, regs->r13, regs->orig_r10, regs->acr);
-
-	printk(" sp: %08lx\n", (unsigned long)regs);
-
-	SUPP_BANK_SEL(BANK_IM);
-	SUPP_REG_RD(RW_MM_CAUSE, i_mmu_cause);
-
-	SUPP_BANK_SEL(BANK_DM);
-	SUPP_REG_RD(RW_MM_CAUSE, d_mmu_cause);
-
-	printk("       Data MMU Cause: %08lx\n", d_mmu_cause);
-	printk("Instruction MMU Cause: %08lx\n", i_mmu_cause);
-
-	printk("Process %s (pid: %d, stackpage=%08lx)\n",
-	       current->comm, current->pid, (unsigned long)current);
-
-	/*
-	 * When in-kernel, we also print out the stack and code at the
-	 * time of the fault..
-	 */
-	if (!user_mode(regs)) {
-		int i;
-
-		show_stack(NULL, (unsigned long *)usp);
-
-		/*
-		 * If the previous stack-dump wasn't a kernel one, dump the
-		 * kernel stack now.
-		 */
-		if (usp != 0)
-			show_stack(NULL, NULL);
-
-		printk("\nCode: ");
-
-		if (regs->erp < PAGE_OFFSET)
-			goto bad_value;
-
-		/*
-		 * Quite often the value at regs->erp doesn't point to the
-		 * interesting instruction, which often is the previous
-		 * instruction. So dump at an offset large enough that the
-		 * instruction decoding should be in sync at the interesting
-		 * point, but small enough to fit on a row. The regs->erp
-		 * location is pointed out in a ksymoops-friendly way by
-		 * wrapping the byte for that address in parenthesises.
-		 */
-		for (i = -12; i < 12; i++) {
-			unsigned char c;
-
-			if (__get_user(c, &((unsigned char *)regs->erp)[i])) {
-bad_value:
-				printk(" Bad IP value.");
-				break;
-			}
-
-			if (i == 0)
-				printk("(%02x) ", c);
-			else
-				printk("%02x ", c);
-		}
-		printk("\n");
-	}
-}
-
-void arch_enable_nmi(void)
-{
-	unsigned long flags;
-
-	local_save_flags(flags);
-	flags |= (1 << 30); /* NMI M flag is at bit 30 */
-	local_irq_restore(flags);
-}
-
-extern void (*nmi_handler)(struct pt_regs *);
-void handle_nmi(struct pt_regs *regs)
-{
-#ifdef CONFIG_ETRAXFS
-	reg_intr_vect_r_nmi r;
-#endif
-
-	if (nmi_handler)
-		nmi_handler(regs);
-
-#ifdef CONFIG_ETRAXFS
-	/* Wait until nmi is no longer active. */
-	do {
-		r = REG_RD(intr_vect, regi_irq, r_nmi);
-	} while (r.ext == regk_intr_vect_on);
-#endif
-}
-
-
-#ifdef CONFIG_BUG
-extern void die_if_kernel(const char *str, struct pt_regs *regs, long err);
-
-/* Copy of the regs at BUG() time.  */
-struct pt_regs BUG_regs;
-
-void do_BUG(char *file, unsigned int line)
-{
-	printk("kernel BUG at %s:%d!\n", file, line);
-	die_if_kernel("Oops", &BUG_regs, 0);
-}
-EXPORT_SYMBOL(do_BUG);
-
-void fixup_BUG(struct pt_regs *regs)
-{
-	BUG_regs = *regs;
-
-#ifdef CONFIG_DEBUG_BUGVERBOSE
-	/*
-	 * Fixup the BUG arguments through exception handlers.
-	 */
-	{
-		const struct exception_table_entry *fixup;
-
-		/*
-		 * ERP points at the "break 14" + 2, compensate for the 2
-		 * bytes.
-		 */
-		fixup = search_exception_tables(instruction_pointer(regs) - 2);
-		if (fixup) {
-			/* Adjust the instruction pointer in the stackframe. */
-			instruction_pointer(regs) = fixup->fixup;
-			arch_fixup(regs);
-		}
-	}
-#else
-	/* Dont try to lookup the filename + line, just dump regs.  */
-	do_BUG("unknown", 0);
-#endif
-}
-
-/*
- * Break 14 handler. Save regs and jump into the fixup_BUG.
- */
-__asm__  ( ".text\n\t"
-	   ".global breakh_BUG\n\t"
-	   "breakh_BUG:\n\t"
-	   SAVE_ALL
-	   KGDB_FIXUP
-	   "move.d $sp, $r10\n\t"
-	   "jsr fixup_BUG\n\t"
-	   "nop\n\t"
-	   "jump ret_from_intr\n\t"
-	   "nop\n\t");
-
-
-#ifdef CONFIG_DEBUG_BUGVERBOSE
-void
-handle_BUG(struct pt_regs *regs)
-{
-}
-#endif
-#endif