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, 241 deletions

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 */
-}