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authorHuang, Ying <ying.huang@intel.com>2008-01-30 13:31:19 +0100
committerIngo Molnar <mingo@elte.hu>2008-01-30 13:31:19 +0100
commit5b83683f32b113d07edfb67a33ce389fc624423d (patch)
tree03efde0750c9d7e477ab695aeee26173ffcc4abf /arch/x86/Kconfig
parent8c8b8859b64baf6d7c33900e8720c7bafe775b2c (diff)
x86: EFI runtime service support
This patch adds basic runtime services support for EFI x86_64 system. The main file of the patch is the addition of efi_64.c for x86_64. This file is modeled after the EFI IA32 avatar. EFI runtime services initialization are implemented in efi_64.c. Some x86_64 specifics are worth noting here. On x86_64, parameters passed to EFI firmware services need to follow the EFI calling convention. For this purpose, a set of functions named efi_call<x> (<x> is the number of parameters) are implemented. EFI function calls are wrapped before calling the firmware service. The duplicated code between efi_32.c and efi_64.c is placed in efi.c to remove them from efi_32.c. 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 'arch/x86/Kconfig')
-rw-r--r--arch/x86/Kconfig2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index fef944bb920..23936301db5 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -959,7 +959,7 @@ config MTRR
config EFI
def_bool n
prompt "Boot from EFI support"
- depends on X86_32 && ACPI
+ depends on ACPI
---help---
This enables the kernel to boot on EFI platforms using
system configuration information passed to it from the firmware.