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Add efifwsetup module to reboot into firmware setup menu.

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This commit is contained in:
Colin Watson 2012-09-18 16:49:30 +01:00
parent d9d2221b0b
commit 1f3f90fb09
8 changed files with 324 additions and 0 deletions
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1
debian/changelog vendored
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@ -2,6 +2,7 @@ grub2 (2.00-5) UNRELEASED; urgency=low
* Backport from upstream:
- Remove extra layer of escaping from grub_probe.
- Add efifwsetup module to reboot into firmware setup menu.
* Switch watch file to point to ftp.gnu.org.
* Build-depend on liblzma-dev, enabling 'grub-mkimage -C xz'.

189
debian/patches/efifwsetup.patch vendored Normal file
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@ -0,0 +1,189 @@
Description: Add efifwsetup module to reboot into firmware setup menu
Author: Peter Jones <pjones@redhat.com>
Origin: upstream, http://bazaar.launchpad.net/~vcs-imports/grub/grub2-bzr/revision/4575
Forwarded: not-needed
Applied-Upstream: http://bazaar.launchpad.net/~vcs-imports/grub/grub2-bzr/revision/4575
Last-Update: 2012-09-18
Index: b/grub-core/Makefile.core.def
===================================================================
--- a/grub-core/Makefile.core.def
+++ b/grub-core/Makefile.core.def
@@ -573,6 +573,12 @@
};
module = {
+ name = efifwsetup;
+ efi = commands/efi/efifwsetup.c;
+ enable = efi;
+};
+
+module = {
name = blocklist;
common = commands/blocklist.c;
};
Index: b/grub-core/commands/efi/efifwsetup.c
===================================================================
--- /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;
+
+ old_os_indications = grub_efi_get_variable ("OsIndications", &global,
+ &oi_size);
+
+ 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;
+
+ os_indications_supported = grub_efi_get_variable ("OsIndicationsSupported",
+ &global, &oi_size);
+
+ 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);
+}
Index: b/grub-core/kern/efi/efi.c
===================================================================
--- a/grub-core/kern/efi/efi.c
+++ b/grub-core/kern/efi/efi.c
@@ -181,6 +181,36 @@
return grub_error (GRUB_ERR_IO, "set_virtual_address_map failed");
}
+grub_err_t
+grub_efi_set_variable(const char *var, const grub_efi_guid_t *guid,
+ void *data, grub_size_t datasize)
+{
+ grub_efi_status_t status;
+ grub_efi_runtime_services_t *r;
+ grub_efi_char16_t *var16;
+ grub_size_t len, len16;
+
+ len = grub_strlen (var);
+ len16 = len * GRUB_MAX_UTF16_PER_UTF8;
+ var16 = grub_malloc ((len16 + 1) * sizeof (var16[0]));
+ if (!var16)
+ return grub_errno;
+ len16 = grub_utf8_to_utf16 (var16, len16, (grub_uint8_t *) var, len, NULL);
+ var16[len16] = 0;
+
+ r = grub_efi_system_table->runtime_services;
+
+ status = efi_call_5 (r->set_variable, var16, guid,
+ (GRUB_EFI_VARIABLE_NON_VOLATILE
+ | GRUB_EFI_VARIABLE_BOOTSERVICE_ACCESS
+ | GRUB_EFI_VARIABLE_RUNTIME_ACCESS),
+ datasize, data);
+ if (status == GRUB_EFI_SUCCESS)
+ return GRUB_ERR_NONE;
+
+ return grub_error (GRUB_ERR_IO, "could not set EFI variable `%s'", var);
+}
+
void *
grub_efi_get_variable (const char *var, const grub_efi_guid_t *guid,
grub_size_t *datasize_out)
Index: b/include/grub/efi/api.h
===================================================================
--- a/include/grub/efi/api.h
+++ b/include/grub/efi/api.h
@@ -58,6 +58,8 @@
#define GRUB_EFI_OPEN_PROTOCOL_BY_DRIVER 0x00000010
#define GRUB_EFI_OPEN_PROTOCOL_BY_EXCLUSIVE 0x00000020
+#define GRUB_EFI_OS_INDICATIONS_BOOT_TO_FW_UI 0x0000000000000001ULL
+
#define GRUB_EFI_VARIABLE_NON_VOLATILE 0x0000000000000001
#define GRUB_EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002
#define GRUB_EFI_VARIABLE_RUNTIME_ACCESS 0x0000000000000004
Index: b/include/grub/efi/efi.h
===================================================================
--- a/include/grub/efi/efi.h
+++ b/include/grub/efi/efi.h
@@ -64,6 +64,11 @@
void *EXPORT_FUNC (grub_efi_get_variable) (const char *variable,
const grub_efi_guid_t *guid,
grub_size_t *datasize_out);
+grub_err_t
+EXPORT_FUNC (grub_efi_set_variable) (const char *var,
+ const grub_efi_guid_t *guid,
+ void *data,
+ grub_size_t datasize);
int
EXPORT_FUNC (grub_efi_compare_device_paths) (const grub_efi_device_path_t *dp1,
const grub_efi_device_path_t *dp2);

1
debian/patches/series vendored
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@ -19,3 +19,4 @@ mkconfig_mid_upgrade.patch
fix_powerpc_emu.patch
install_efi_fallback.patch
mkconfig_overescaping.patch
efifwsetup.patch

6
grub-core/Makefile.core.def
View File

@ -572,6 +572,12 @@ module = {
enable = efi;
};
module = {
name = efifwsetup;
efi = commands/efi/efifwsetup.c;
enable = efi;
};
module = {
name = blocklist;
common = commands/blocklist.c;

90
grub-core/commands/efi/efifwsetup.c Normal file
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@ -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;
old_os_indications = grub_efi_get_variable ("OsIndications", &global,
&oi_size);
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;
os_indications_supported = grub_efi_get_variable ("OsIndicationsSupported",
&global, &oi_size);
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);
}

30
grub-core/kern/efi/efi.c
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@ -181,6 +181,36 @@ grub_efi_set_virtual_address_map (grub_efi_uintn_t memory_map_size,
return grub_error (GRUB_ERR_IO, "set_virtual_address_map failed");
}
grub_err_t
grub_efi_set_variable(const char *var, const grub_efi_guid_t *guid,
void *data, grub_size_t datasize)
{
grub_efi_status_t status;
grub_efi_runtime_services_t *r;
grub_efi_char16_t *var16;
grub_size_t len, len16;
len = grub_strlen (var);
len16 = len * GRUB_MAX_UTF16_PER_UTF8;
var16 = grub_malloc ((len16 + 1) * sizeof (var16[0]));
if (!var16)
return grub_errno;
len16 = grub_utf8_to_utf16 (var16, len16, (grub_uint8_t *) var, len, NULL);
var16[len16] = 0;
r = grub_efi_system_table->runtime_services;
status = efi_call_5 (r->set_variable, var16, guid,
(GRUB_EFI_VARIABLE_NON_VOLATILE
| GRUB_EFI_VARIABLE_BOOTSERVICE_ACCESS
| GRUB_EFI_VARIABLE_RUNTIME_ACCESS),
datasize, data);
if (status == GRUB_EFI_SUCCESS)
return GRUB_ERR_NONE;
return grub_error (GRUB_ERR_IO, "could not set EFI variable `%s'", var);
}
void *
grub_efi_get_variable (const char *var, const grub_efi_guid_t *guid,
grub_size_t *datasize_out)

2
include/grub/efi/api.h
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@ -58,6 +58,8 @@
#define GRUB_EFI_OPEN_PROTOCOL_BY_DRIVER 0x00000010
#define GRUB_EFI_OPEN_PROTOCOL_BY_EXCLUSIVE 0x00000020
#define GRUB_EFI_OS_INDICATIONS_BOOT_TO_FW_UI 0x0000000000000001ULL
#define GRUB_EFI_VARIABLE_NON_VOLATILE 0x0000000000000001
#define GRUB_EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002
#define GRUB_EFI_VARIABLE_RUNTIME_ACCESS 0x0000000000000004

5
include/grub/efi/efi.h
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@ -64,6 +64,11 @@ grub_err_t EXPORT_FUNC (grub_efi_set_virtual_address_map) (grub_efi_uintn_t memo
void *EXPORT_FUNC (grub_efi_get_variable) (const char *variable,
const grub_efi_guid_t *guid,
grub_size_t *datasize_out);
grub_err_t
EXPORT_FUNC (grub_efi_set_variable) (const char *var,
const grub_efi_guid_t *guid,
void *data,
grub_size_t datasize);
int
EXPORT_FUNC (grub_efi_compare_device_paths) (const grub_efi_device_path_t *dp1,
const grub_efi_device_path_t *dp2);