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-rw-r--r--Documentation/x86_64/boot-options.txt9
1 files changed, 8 insertions, 1 deletions
diff --git a/Documentation/x86_64/boot-options.txt b/Documentation/x86_64/boot-options.txt
index d7a333258682..638bf46ca059 100644
--- a/Documentation/x86_64/boot-options.txt
+++ b/Documentation/x86_64/boot-options.txt
@@ -110,7 +110,7 @@ Idle loop
Rebooting
- reboot=b[ios] | t[riple] | k[bd] | a[cpi] [, [w]arm | [c]old]
+ reboot=b[ios] | t[riple] | k[bd] | a[cpi] | e[fi] [, [w]arm | [c]old]
bios Use the CPU reboot vector for warm reset
warm Don't set the cold reboot flag
cold Set the cold reboot flag
@@ -119,6 +119,9 @@ Rebooting
acpi Use the ACPI RESET_REG in the FADT. If ACPI is not configured or the
ACPI reset does not work, the reboot path attempts the reset using
the keyboard controller.
+ efi Use efi reset_system runtime service. If EFI is not configured or the
+ EFI reset does not work, the reboot path attempts the reset using
+ the keyboard controller.
Using warm reset will be much faster especially on big memory
systems because the BIOS will not go through the memory check.
@@ -303,4 +306,8 @@ Debugging
newfallback: use new unwinder but fall back to old if it gets
stuck (default)
+EFI
+
+ noefi Disable EFI support
+
Miscellaneous