linux/arch/mips/qemu/q-reset.c

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#include <asm/io.h>
#include <asm/reboot.h>
#include <asm/cacheflush.h>
#include <asm/qemu.h>
static void qemu_machine_restart(char *command)
{
volatile unsigned int *reg = (unsigned int *)QEMU_RESTART_REG;
set_c0_status(ST0_BEV | ST0_ERL);
change_c0_config(CONF_CM_CMASK, CONF_CM_UNCACHED);
flush_cache_all();
write_c0_wired(0);
*reg = 42;
while (1)
cpu_wait();
}
static void qemu_machine_halt(void)
{
volatile unsigned int *reg = (unsigned int *)QEMU_HALT_REG;
*reg = 42;
while (1)
cpu_wait();
}
void qemu_reboot_setup(void)
{
_machine_restart = qemu_machine_restart;
_machine_halt = qemu_machine_halt;
}