Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / firmware / efi / reboot.c

diff --git a/kernel/drivers/firmware/efi/reboot.c b/kernel/drivers/firmware/efi/reboot.c
new file mode 100644 (file)
index 0000000..9c59d1c
--- /dev/null
+++ b/kernel/drivers/firmware/efi/reboot.c
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2014 Intel Corporation; author Matt Fleming
+ * Copyright (c) 2014 Red Hat, Inc., Mark Salter <msalter@redhat.com>
+ */
+#include <linux/efi.h>
+#include <linux/reboot.h>
+
+int efi_reboot_quirk_mode = -1;
+
+void efi_reboot(enum reboot_mode reboot_mode, const char *__unused)
+{
+       int efi_mode;
+
+       if (!efi_enabled(EFI_RUNTIME_SERVICES))
+               return;
+
+       switch (reboot_mode) {
+       case REBOOT_WARM:
+       case REBOOT_SOFT:
+               efi_mode = EFI_RESET_WARM;
+               break;
+       default:
+               efi_mode = EFI_RESET_COLD;
+               break;
+       }
+
+       /*
+        * If a quirk forced an EFI reset mode, always use that.
+        */
+       if (efi_reboot_quirk_mode != -1)
+               efi_mode = efi_reboot_quirk_mode;
+
+       efi.reset_system(efi_mode, EFI_SUCCESS, 0, NULL);
+}
+
+bool __weak efi_poweroff_required(void)
+{
+       return false;
+}
+
+static void efi_power_off(void)
+{
+       efi.reset_system(EFI_RESET_SHUTDOWN, EFI_SUCCESS, 0, NULL);
+}
+
+static int __init efi_shutdown_init(void)
+{
+       if (!efi_enabled(EFI_RUNTIME_SERVICES))
+               return -ENODEV;
+
+       if (efi_poweroff_required())
+               pm_power_off = efi_power_off;
+
+       return 0;
+}
+late_initcall(efi_shutdown_init);