diff options
| -rw-r--r-- | arch/x86/kernel/reboot_64.c | 20 | ||||
| -rw-r--r-- | include/asm-x86/emergency-restart.h | 9 |
2 files changed, 22 insertions, 7 deletions
diff --git a/arch/x86/kernel/reboot_64.c b/arch/x86/kernel/reboot_64.c index 307f996a393..d6bdf93ffca 100644 --- a/arch/x86/kernel/reboot_64.c +++ b/arch/x86/kernel/reboot_64.c @@ -9,6 +9,7 @@ #include <linux/pm.h> #include <linux/kdebug.h> #include <linux/sched.h> +#include <linux/efi.h> #include <acpi/reboot.h> #include <asm/io.h> #include <asm/delay.h> @@ -28,20 +29,17 @@ void (*pm_power_off)(void); EXPORT_SYMBOL(pm_power_off); static long no_idt[3]; -static enum { - BOOT_TRIPLE = 't', - BOOT_KBD = 'k', - BOOT_ACPI = 'a' -} reboot_type = BOOT_KBD; +enum reboot_type reboot_type = BOOT_KBD; static int reboot_mode = 0; int reboot_force; -/* reboot=t[riple] | k[bd] [, [w]arm | [c]old] +/* reboot=t[riple] | k[bd] | e[fi] [, [w]arm | [c]old] warm Don't set the cold reboot flag cold Set the cold reboot flag triple Force a triple fault (init) kbd Use the keyboard controller. cold reset (default) acpi Use the RESET_REG in the FADT + efi Use efi reset_system runtime service force Avoid anything that could hang. */ static int __init reboot_setup(char *str) @@ -60,6 +58,7 @@ static int __init reboot_setup(char *str) case 'a': case 'b': case 'k': + case 'e': reboot_type = *str; break; case 'f': @@ -155,7 +154,14 @@ void machine_emergency_restart(void) acpi_reboot(); reboot_type = BOOT_KBD; break; - } + + case BOOT_EFI: + if (efi_enabled) + efi.reset_system(reboot_mode ? EFI_RESET_WARM : EFI_RESET_COLD, + EFI_SUCCESS, 0, NULL); + reboot_type = BOOT_KBD; + break; + } } } diff --git a/include/asm-x86/emergency-restart.h b/include/asm-x86/emergency-restart.h index 680c3956334..54189084462 100644 --- a/include/asm-x86/emergency-restart.h +++ b/include/asm-x86/emergency-restart.h @@ -1,6 +1,15 @@ #ifndef _ASM_EMERGENCY_RESTART_H #define _ASM_EMERGENCY_RESTART_H +enum reboot_type { + BOOT_TRIPLE = 't', + BOOT_KBD = 'k', + BOOT_ACPI = 'a', + BOOT_EFI = 'e' +}; + +extern enum reboot_type reboot_type; + extern void machine_emergency_restart(void); #endif /* _ASM_EMERGENCY_RESTART_H */ |