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| author | Huang, Ying <ying.huang@intel.com> | 2008-01-30 13:31:19 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-01-30 13:31:19 +0100 |
| commit | 9ad65e4748f55e3159283d7fa9d54fb30c086113 (patch) | |
| tree | c562b13be18497327cc772d52739cddcf369845d /Documentation/x86_64 | |
| parent | de18c850af701ac9512b7239e88fa45e4c168771 (diff) | |
| download | linux-9ad65e4748f55e3159283d7fa9d54fb30c086113.tar.gz linux-9ad65e4748f55e3159283d7fa9d54fb30c086113.tar.bz2 linux-9ad65e4748f55e3159283d7fa9d54fb30c086113.zip | |
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 <mouli@linux.intel.com>
Signed-off-by: Huang Ying <ying.huang@intel.com>
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.txt | 9 | ||||
| -rw-r--r-- | 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 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 diff --git a/Documentation/x86_64/uefi.txt b/Documentation/x86_64/uefi.txt index 91a98edfb588..7d77120a5184 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 |