This patch adds document for EFI x86_64 boot support. The setup and
operation guide of EFI based system is documented in
Documentation/x86_64/uefi.txt.
Signed-off-by: Chandramouli Narayanan <[email protected]>
Signed-off-by: Huang Ying <[email protected]>
---
uefi.txt | 29 +++++++++++++++++++++++++++++
1 file changed, 29 insertions(+)
Index: linux-2.6.24-rc1/Documentation/x86_64/uefi.txt
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.24-rc1/Documentation/x86_64/uefi.txt 2007-10-24 17:10:21.000000000 +0800
@@ -0,0 +1,29 @@
+General note on [U]EFI x86_64 support
+-------------------------------------
+
+The nomenclature EFI and UEFI are used interchangeably in this document.
+
+Although the tools below are _not_ needed for building the kernel,
+the needed bootloader support and associated tools for x86_64 platforms
+with EFI firmware and specifications are listed below.
+
+1. UEFI specification: http://www.uefi.org
+
+2. Booting Linux kernel on UEFI x86_64 platform requires bootloader
+ support. Elilo with x86_64 support can be used.
+
+3. x86_64 platform with EFI/UEFI firmware.
+
+Mechanics:
+---------
+- Build the kernel with the following configuration.
+ CONFIG_FB_EFI=y
+ CONFIG_FRAMEBUFFER_CONSOLE=y
+- Create a VFAT partition on the disk
+- Copy the following to the VFAT partition:
+ elilo bootloader with x86_64 support, elilo configuration file,
+ kernel image built in first step and corresponding
+ initrd. Instructions on building elilo and its dependencies
+ can be found in the elilo sourceforge project.
+- Boot to EFI shell and invoke elilo choosing the kernel image built
+ in first step.
-
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