[SCSI] qla1280: remove SG_SEGMENTS
[linux-2.6/kvm.git] / arch / mips / cobalt / reset.c
blob084c8e59f42c9686b5a9c1132208a4ae597d93e3
1 /*
2 * Cobalt Reset operations
4 * This file is subject to the terms and conditions of the GNU General Public
5 * License. See the file "COPYING" in the main directory of this archive
6 * for more details.
8 * Copyright (C) 1995, 1996, 1997 by Ralf Baechle
9 * Copyright (C) 2001 by Liam Davies (ldavies@agile.tv)
11 #include <linux/sched.h>
12 #include <linux/mm.h>
13 #include <asm/cacheflush.h>
14 #include <asm/io.h>
15 #include <asm/processor.h>
16 #include <asm/reboot.h>
17 #include <asm/system.h>
18 #include <asm/mipsregs.h>
20 void cobalt_machine_restart(char *command)
22 *(volatile char *)0xbc000000 = 0x0f;
25 * Ouch, we're still alive ... This time we take the silver bullet ...
26 * ... and find that we leave the hardware in a state in which the
27 * kernel in the flush locks up somewhen during of after the PCI
28 * detection stuff.
30 set_c0_status(ST0_BEV | ST0_ERL);
31 change_c0_config(CONF_CM_CMASK, CONF_CM_UNCACHED);
32 flush_cache_all();
33 write_c0_wired(0);
34 __asm__ __volatile__(
35 "jr\t%0"
37 : "r" (0xbfc00000));
40 extern int led_state;
41 #define kLED 0xBC000000
42 #define LEDSet(x) (*(volatile unsigned char *) kLED) = (( unsigned char)x)
44 void cobalt_machine_halt(void)
46 int mark;
48 /* Blink our cute? little LED (number 3)... */
49 while (1) {
50 led_state = led_state | ( 1 << 3 );
51 LEDSet(led_state);
52 mark = jiffies;
53 while (jiffies<(mark+HZ));
54 led_state = led_state & ~( 1 << 3 );
55 LEDSet(led_state);
56 mark = jiffies;
57 while (jiffies<(mark+HZ));
62 * This triggers the luser mode device driver for the power switch ;-)
64 void cobalt_machine_power_off(void)
66 printk("You can switch the machine off now.\n");
67 cobalt_machine_halt();