Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9ad65e4748f55e3159283d7fa9d54fb30c086113
Commit: 9ad65e4748f55e3159283d7fa9d54fb30c086113
Parent: de18c850af701ac9512b7239e88fa45e4c168771
Author: Huang, Ying <[EMAIL PROTECTED]>
AuthorDate: Wed Jan 30 13:31:19 2008 +0100
Committer: Ingo Molnar <[EMAIL PROTECTED]>
CommitDate: Wed Jan 30 13:31:19 2008 +0100
x86: EFI runtime service support: document for EFI runtime services
This patch adds document for EFI x86_64 runtime services support.
Signed-off-by: Chandramouli Narayanan <[EMAIL PROTECTED]>
Signed-off-by: Huang Ying <[EMAIL PROTECTED]>
Cc: Andi Kleen <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Ingo Molnar <[EMAIL PROTECTED]>
Signed-off-by: Thomas Gleixner <[EMAIL PROTECTED]>
---
Documentation/x86_64/boot-options.txt | 9 ++++++++-
Documentation/x86_64/uefi.txt | 9 +++++++++
2 files changed, 17 insertions(+), 1 deletions(-)
diff --git a/Documentation/x86_64/boot-options.txt
b/Documentation/x86_64/boot-options.txt
index d7a3332..638bf46 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
diff --git a/Documentation/x86_64/uefi.txt b/Documentation/x86_64/uefi.txt
index 91a98ed..7d77120 100644
--- a/Documentation/x86_64/uefi.txt
+++ b/Documentation/x86_64/uefi.txt
@@ -19,6 +19,10 @@ Mechanics:
- Build the kernel with the following configuration.
CONFIG_FB_EFI=y
CONFIG_FRAMEBUFFER_CONSOLE=y
+ If EFI runtime services are expected, the following configuration should
+ be selected.
+ CONFIG_EFI=y
+ CONFIG_EFI_VARS=y or m # optional
- Create a VFAT partition on the disk
- Copy the following to the VFAT partition:
elilo bootloader with x86_64 support, elilo configuration file,
@@ -27,3 +31,8 @@ Mechanics:
can be found in the elilo sourceforge project.
- Boot to EFI shell and invoke elilo choosing the kernel image built
in first step.
+- If some or all EFI runtime services don't work, you can try following
+ kernel command line parameters to turn off some or all EFI runtime
+ services.
+ noefi turn off all EFI runtime services
+ reboot_type=k turn off EFI reboot runtime service
-
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