drm: Fix authentication kernel crash
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / arch / mips / wrppmc / reset.c
blobcc5474b24f0657f6b51091d6f2779427a03d3e78
1 /*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
6 * Copyright (C) 1997 Ralf Baechle
7 */
8 #include <linux/irqflags.h>
9 #include <linux/kernel.h>
11 #include <asm/cacheflush.h>
12 #include <asm/mipsregs.h>
13 #include <asm/processor.h>
15 void wrppmc_machine_restart(char *command)
18 * Ouch, we're still alive ... This time we take the silver bullet ...
19 * ... and find that we leave the hardware in a state in which the
20 * kernel in the flush locks up somewhen during of after the PCI
21 * detection stuff.
23 local_irq_disable();
24 set_c0_status(ST0_BEV | ST0_ERL);
25 change_c0_config(CONF_CM_CMASK, CONF_CM_UNCACHED);
26 flush_cache_all();
27 write_c0_wired(0);
28 __asm__ __volatile__("jr\t%0"::"r"(0xbfc00000));
31 void wrppmc_machine_halt(void)
33 local_irq_disable();
35 printk(KERN_NOTICE "You can safely turn off the power\n");
36 while (1) {
37 if (cpu_wait)
38 cpu_wait();