arch/mips/qemu/q-reset.c

   1
   2 #include <asm/io.h>
   3 #include <asm/reboot.h>
   4 #include <asm/cacheflush.h>
   5 #include <asm/qemu.h>
   6
   7 static void qemu_machine_restart(char *command)
   8 {
   9         volatile unsigned int *reg = (unsigned int *)QEMU_RESTART_REG;
  10
  11         set_c0_status(ST0_BEV | ST0_ERL);
  12         change_c0_config(CONF_CM_CMASK, CONF_CM_UNCACHED);
  13         flush_cache_all();
  14         write_c0_wired(0);
  15         *reg = 42;
  16         while (1)
  17                 cpu_wait();
  18 }
  19
  20 static void qemu_machine_halt(void)
  21 {
  22         volatile unsigned int *reg = (unsigned int *)QEMU_HALT_REG;
  23
  24         *reg = 42;
  25         while (1)
  26                 cpu_wait();
  27 }
  28
  29 void qemu_reboot_setup(void)
  30 {
  31         _machine_restart = qemu_machine_restart;
  32         _machine_halt = qemu_machine_halt;
  33 }