93 lines
1.9 KiB
C
93 lines
1.9 KiB
C
/*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation; either version 2 of the License, or (at your
|
|
* option) any later version.
|
|
*
|
|
* Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology
|
|
* Author: Fuxin Zhang, zhangfx@lemote.com
|
|
* Copyright (C) 2009 Lemote, Inc.
|
|
* Author: Zhangjin Wu, wuzhangjin@gmail.com
|
|
*/
|
|
#include <linux/init.h>
|
|
#include <linux/pm.h>
|
|
|
|
#include <asm/idle.h>
|
|
#include <asm/reboot.h>
|
|
|
|
#include <loongson.h>
|
|
#include <boot_param.h>
|
|
|
|
static inline void loongson_reboot(void)
|
|
{
|
|
#ifndef CONFIG_CPU_JUMP_WORKAROUNDS
|
|
((void (*)(void))ioremap_nocache(LOONGSON_BOOT_BASE, 4)) ();
|
|
#else
|
|
void (*func)(void);
|
|
|
|
func = (void *)ioremap_nocache(LOONGSON_BOOT_BASE, 4);
|
|
|
|
__asm__ __volatile__(
|
|
" .set noat \n"
|
|
" jr %[func] \n"
|
|
" .set at \n"
|
|
: /* No outputs */
|
|
: [func] "r" (func));
|
|
#endif
|
|
}
|
|
|
|
static void loongson_restart(char *command)
|
|
{
|
|
#ifndef CONFIG_LEFI_FIRMWARE_INTERFACE
|
|
/* do preparation for reboot */
|
|
mach_prepare_reboot();
|
|
|
|
/* reboot via jumping to boot base address */
|
|
loongson_reboot();
|
|
#else
|
|
void (*fw_restart)(void) = (void *)loongson_sysconf.restart_addr;
|
|
|
|
fw_restart();
|
|
while (1) {
|
|
if (cpu_wait)
|
|
cpu_wait();
|
|
}
|
|
#endif
|
|
}
|
|
|
|
static void loongson_poweroff(void)
|
|
{
|
|
#ifndef CONFIG_LEFI_FIRMWARE_INTERFACE
|
|
mach_prepare_shutdown();
|
|
unreachable();
|
|
#else
|
|
void (*fw_poweroff)(void) = (void *)loongson_sysconf.poweroff_addr;
|
|
|
|
fw_poweroff();
|
|
while (1) {
|
|
if (cpu_wait)
|
|
cpu_wait();
|
|
}
|
|
#endif
|
|
}
|
|
|
|
static void loongson_halt(void)
|
|
{
|
|
pr_notice("\n\n** You can safely turn off the power now **\n\n");
|
|
while (1) {
|
|
if (cpu_wait)
|
|
cpu_wait();
|
|
}
|
|
}
|
|
|
|
static int __init mips_reboot_setup(void)
|
|
{
|
|
_machine_restart = loongson_restart;
|
|
_machine_halt = loongson_halt;
|
|
pm_power_off = loongson_poweroff;
|
|
|
|
return 0;
|
|
}
|
|
|
|
arch_initcall(mips_reboot_setup);
|