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authorAaron Durbin <adurbin@google.com>2008-01-30 07:31:17 -0500
committerIngo Molnar <mingo@elte.hu>2008-01-30 07:31:17 -0500
commitfa20efd2fcd9349770113c6f72fc76ce437b62f5 (patch)
tree15600837350257043966fe7b8d8cf0d1d8badd00 /Documentation/x86_64
parent5f561d3be8f0db54f9b4fc5cb5db05343f372431 (diff)
x86: add ACPI reboot option
Add the ability to reboot an x86_64 based machine using the RESET_REG in the FADT ACPI table. Signed-off-by: Aaron Durbin <adurbin@google.com> Cc: Len Brown <lenb@kernel.org> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'Documentation/x86_64')
-rw-r--r--Documentation/x86_64/boot-options.txt5
1 files changed, 4 insertions, 1 deletions
diff --git a/Documentation/x86_64/boot-options.txt b/Documentation/x86_64/boot-options.txt
index 945311840a10..d7a333258682 100644
--- a/Documentation/x86_64/boot-options.txt
+++ b/Documentation/x86_64/boot-options.txt
@@ -110,12 +110,15 @@ Idle loop
110 110
111Rebooting 111Rebooting
112 112
113 reboot=b[ios] | t[riple] | k[bd] [, [w]arm | [c]old] 113 reboot=b[ios] | t[riple] | k[bd] | a[cpi] [, [w]arm | [c]old]
114 bios Use the CPU reboot vector for warm reset 114 bios Use the CPU reboot vector for warm reset
115 warm Don't set the cold reboot flag 115 warm Don't set the cold reboot flag
116 cold Set the cold reboot flag 116 cold Set the cold reboot flag
117 triple Force a triple fault (init) 117 triple Force a triple fault (init)
118 kbd Use the keyboard controller. cold reset (default) 118 kbd Use the keyboard controller. cold reset (default)
119 acpi Use the ACPI RESET_REG in the FADT. If ACPI is not configured or the
120 ACPI reset does not work, the reboot path attempts the reset using
121 the keyboard controller.
119 122
120 Using warm reset will be much faster especially on big memory 123 Using warm reset will be much faster especially on big memory
121 systems because the BIOS will not go through the memory check. 124 systems because the BIOS will not go through the memory check.