1 files changed, 90 insertions, 0 deletions
diff --git a/grub-core/commands/efi/efifwsetup.c b/grub-core/commands/efi/efifwsetup.c
new file mode 100644
index 0000000..eaca032
--- /dev/null
+++ b/grub-core/commands/efi/efifwsetup.c
@@ -0,0 +1,90 @@
+/* fwsetup.c - Reboot into firmware setup menu. */
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2012  Free Software Foundation, Inc.
+ *
+ *  GRUB is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/types.h>
+#include <grub/mm.h>
+#include <grub/misc.h>
+#include <grub/efi/api.h>
+#include <grub/efi/efi.h>
+#include <grub/command.h>
+#include <grub/i18n.h>
+
+GRUB_MOD_LICENSE ("GPLv3+");
+
+static grub_err_t
+grub_cmd_fwsetup (grub_command_t cmd __attribute__ ((unused)),
+		  int argc __attribute__ ((unused)),
+		  char **args __attribute__ ((unused)))
+{
+  grub_efi_uint64_t *old_os_indications;
+  grub_efi_uint64_t os_indications = GRUB_EFI_OS_INDICATIONS_BOOT_TO_FW_UI;
+  grub_err_t status;
+  grub_size_t oi_size;
+  grub_efi_guid_t global = GRUB_EFI_GLOBAL_VARIABLE_GUID;
+
+  grub_efi_get_variable ("OsIndications", &global, &oi_size,
+			 (void **) &old_os_indications);
+
+  if (old_os_indications != NULL && oi_size == sizeof (os_indications))
+    os_indications |= *old_os_indications;
+
+  status = grub_efi_set_variable ("OsIndications", &global, &os_indications,
+				  sizeof (os_indications));
+  if (status != GRUB_ERR_NONE)
+    return status;
+
+  grub_reboot ();
+
+  return GRUB_ERR_BUG;
+}
+
+static grub_command_t cmd = NULL;
+
+static grub_efi_boolean_t
+efifwsetup_is_supported (void)
+{
+  grub_efi_uint64_t *os_indications_supported = NULL;
+  grub_size_t oi_size = 0;
+  grub_efi_guid_t global = GRUB_EFI_GLOBAL_VARIABLE_GUID;
+
+  grub_efi_get_variable ("OsIndicationsSupported", &global, &oi_size,
+			 (void **) &os_indications_supported);
+
+  if (!os_indications_supported)
+    return 0;
+
+  if (*os_indications_supported & GRUB_EFI_OS_INDICATIONS_BOOT_TO_FW_UI)
+    return 1;
+
+  return 0;
+}
+
+GRUB_MOD_INIT (efifwsetup)
+{
+  if (efifwsetup_is_supported ())
+    cmd = grub_register_command ("fwsetup", grub_cmd_fwsetup, NULL,
+				 N_("Reboot into firmware setup menu."));
+
+}
+
+GRUB_MOD_FINI (efifwsetup)
+{
+  if (cmd)
+    grub_unregister_command (cmd);
+}