tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Thomas Horsten <thh@lasat.com>
3 * Copyright (C) 2000 LASAT Networks A/S.
4 *
5 * This program is free software; you can distribute it and/or modify it
6 * under the terms of the GNU General Public License (Version 2) as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * for more details.
13 *
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
17 *
18 * Reset the LASAT board.
19 */
20#include <linux/config.h>
21#include <linux/kernel.h>
22#include <asm/reboot.h>
23#include <asm/system.h>
24#include <asm/lasat/lasat.h>
25#include "picvue.h"
26#include "prom.h"
27
28static void lasat_machine_restart(char *command);
29static void lasat_machine_halt(void);
30
31/* Used to set machine to boot in service mode via /proc interface */
32int lasat_boot_to_service = 0;
33
34static void lasat_machine_restart(char *command)
35{
36 local_irq_disable();
37
38 if (lasat_boot_to_service) {
39 printk("machine_restart: Rebooting to service mode\n");
40 *(volatile unsigned int *)0xa0000024 = 0xdeadbeef;
41 *(volatile unsigned int *)0xa00000fc = 0xfedeabba;
42 }
43 *lasat_misc->reset_reg = 0xbedead;
44 for (;;) ;
45}
46
47#define MESSAGE "System halted"
48static void lasat_machine_halt(void)
49{
50 local_irq_disable();
51
52 /* Disable interrupts and loop forever */
53 printk(KERN_NOTICE MESSAGE "\n");
54#ifdef CONFIG_PICVUE
55 pvc_clear();
56 pvc_write_string(MESSAGE, 0, 0);
57#endif
58 prom_monitor();
59 for (;;) ;
60}
61
62void lasat_reboot_setup(void)
63{
64 _machine_restart = lasat_machine_restart;
65 _machine_halt = lasat_machine_halt;
66 _machine_power_off = lasat_machine_halt;
67}