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q-reset.c

#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;
}

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