linux-kernel - [PATCH 2/2 -v2 resend] x86_64 EFI boot support: EFI boot document

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Message-Id: <1193218352.23935.149.camel@caritas-dev.intel.com>
Date:	Wed, 24 Oct 2007 17:32:32 +0800
From:	"Huang, Ying" <ying.huang@...el.com>
To:	akpm@...ux-foundation.org, "H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>, Andi Kleen <ak@...e.de>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Chandramouli Narayanan <mouli@...ux.intel.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"Antonino A. Daplas" <adaplas@....net>
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH 2/2 -v2 resend] x86_64 EFI boot support: EFI boot document

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 <mouli@...ux.intel.com>
Signed-off-by: Huang Ying <ying.huang@...el.com>

---

 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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