blob: 805a0e88507b5b0b8b4cec03f5f389edb13c68f5 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * Cobalt Reset operations
3 *
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.
7 *
8 * Copyright (C) 1995, 1996, 1997 by Ralf Baechle
9 * Copyright (C) 2001 by Liam Davies (ldavies@agile.tv)
10 */
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>
Ralf Baechlec4ed38a2005-02-21 16:18:36 +000019#include <asm/cobalt/cobalt.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070020
21void cobalt_machine_halt(void)
22{
Ralf Baechlec4ed38a2005-02-21 16:18:36 +000023 int state, last, diff;
24 unsigned long mark;
Linus Torvalds1da177e2005-04-16 15:20:36 -070025
Ralf Baechlec4ed38a2005-02-21 16:18:36 +000026 /*
27 * turn off bar on Qube, flash power off LED on RaQ (0.5Hz)
28 *
29 * restart if ENTER and SELECT are pressed
30 */
31
32 last = COBALT_KEY_PORT;
33
34 for (state = 0;;) {
35
36 state ^= COBALT_LED_POWER_OFF;
37 COBALT_LED_PORT = state;
38
39 diff = COBALT_KEY_PORT ^ last;
40 last ^= diff;
41
42 if((diff & (COBALT_KEY_ENTER | COBALT_KEY_SELECT)) && !(~last & (COBALT_KEY_ENTER | COBALT_KEY_SELECT)))
43 COBALT_LED_PORT = COBALT_LED_RESET;
44
45 for (mark = jiffies; jiffies - mark < HZ;)
46 ;
Linus Torvalds1da177e2005-04-16 15:20:36 -070047 }
48}
49
Ralf Baechlec4ed38a2005-02-21 16:18:36 +000050void cobalt_machine_restart(char *command)
51{
52 COBALT_LED_PORT = COBALT_LED_RESET;
53
54 /* we should never get here */
55 cobalt_machine_halt();
56}
57
Linus Torvalds1da177e2005-04-16 15:20:36 -070058/*
59 * This triggers the luser mode device driver for the power switch ;-)
60 */
61void cobalt_machine_power_off(void)
62{
63 printk("You can switch the machine off now.\n");
64 cobalt_machine_halt();
65}