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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:29:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:29:51 +0000
commit6e7a315eb67cb6c113cf37e1d66c4f11a51a2b3e (patch)
tree32451fa3cdd9321fb2591fada9891b2cb70a9cd1 /grub-core/lib/i386/reboot_trampoline.S
parentInitial commit. (diff)
downloadgrub2-6e7a315eb67cb6c113cf37e1d66c4f11a51a2b3e.tar.xz
grub2-6e7a315eb67cb6c113cf37e1d66c4f11a51a2b3e.zip
Adding upstream version 2.06.upstream/2.06upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'grub-core/lib/i386/reboot_trampoline.S')
-rw-r--r--grub-core/lib/i386/reboot_trampoline.S34
1 files changed, 34 insertions, 0 deletions
diff --git a/grub-core/lib/i386/reboot_trampoline.S b/grub-core/lib/i386/reboot_trampoline.S
new file mode 100644
index 0000000..c088cd0
--- /dev/null
+++ b/grub-core/lib/i386/reboot_trampoline.S
@@ -0,0 +1,34 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2011 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/symbol.h>
+#include <grub/i386/reboot.h>
+
+ .p2align 4
+
+VARIABLE(grub_reboot_start)
+ .code16
+
+ /* set 0x472 to 0x0000 for cold boot (0x1234 for warm boot) */
+ movw $0x0472, %di
+ xorw %ax, %ax
+ movw %ax, (%di)
+ ljmp $0xf000, $0xfff0
+
+ .code32
+VARIABLE(grub_reboot_end)