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Message-Id: <1185851583.23149.30.camel@caritas-dev.intel.com> Date: Tue, 31 Jul 2007 11:13:03 +0800 From: "Huang, Ying" <ying.huang@...el.com> To: ak@...e.de, akpm@...ux-foundation.org, Yinghai Lu <yhlu.kernel@...il.com>, "Eric W. Biederman" <ebiederm@...ssion.com>, Randy Dunlap <randy.dunlap@...cle.com>, Chandramouli Narayanan <mouli@...ux.intel.com> Cc: linux-kernel@...r.kernel.org Subject: [PATCH 5/5] x86_64 EFI support -v3: EFI document This patch adds document for EFI x86_64 support. The boot parameters added are documented in Documentation/i386/zero-page.txt. 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> --- i386/zero-page.txt | 18 ++++++++++++++---- x86_64/uefi.txt | 42 ++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 56 insertions(+), 4 deletions(-) Index: linux-2.6.23-rc1/Documentation/i386/zero-page.txt =================================================================== --- linux-2.6.23-rc1.orig/Documentation/i386/zero-page.txt 2007-07-30 11:28:45.000000000 +0800 +++ linux-2.6.23-rc1/Documentation/i386/zero-page.txt 2007-07-30 11:29:28.000000000 +0800 @@ -31,11 +31,11 @@ 0xb0 - 0x13f Free. Add more parameters here if you really need them. 0x140- 0x1be EDID_INFO Video mode setup -0x1c4 unsigned long EFI system table pointer -0x1c8 unsigned long EFI memory descriptor size -0x1cc unsigned long EFI memory descriptor version +0x1c4 unsigned long EFI system table pointer* +0x1c8 unsigned long EFI memory descriptor size* +0x1cc unsigned long EFI memory descriptor version* 0x1d0 unsigned long EFI memory descriptor map pointer -0x1d4 unsigned long EFI memory descriptor map size +0x1d4 unsigned long EFI memory descriptor map size* 0x1e0 unsigned long ALT_MEM_K, alternative mem check, in Kb 0x1e4 unsigned long Scratch field for the kernel setup code 0x1e8 char number of entries in E820MAP (below) @@ -87,3 +87,13 @@ 0x2d0 - 0xd00 E820MAP 0xd00 - 0xeff EDDBUF (edd.S) for disk signature read sector 0xd00 - 0xeeb EDDBUF (edd.S) for edd data + +Changes for x86_64 implementation: +--------------------------------- +For alignment purposes, the following parameters are rearranged. + +0x1b8 unsigned long EFI system table pointer +0x1c0 unsigned long EFI Loader signature +0x1c4 unsigned long EFI memory descriptor size +0x1c8 unsigned long EFI memory descriptor version +0x1cc unsigned long EFI memory descriptor map size Index: linux-2.6.23-rc1/Documentation/x86_64/uefi.txt =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ linux-2.6.23-rc1/Documentation/x86_64/uefi.txt 2007-07-30 11:29:28.000000000 +0800 @@ -0,0 +1,42 @@ +General note on [U]EFI x86_64 support +------------------------------------- + +This provides documentation on [U]EFI support for x86_64 architecture. +The nomenclature EFI and UEFI are used intechangeably 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 EFI64 enabled kernel requires boot loader support. +Patches to elilo and gnu-efi library with x86_64 support and documentation +have been submitted to respective project maintainers. + elilo: http://sourceforge.net/projects/elilo + gnu-efi library: http://sourceforge.net/projects/gnu-efi/ + gnu-efi-3.0d release now supports [U]EFI x86_64. + +3. The tool to convert ELF to PE-COFF image: + binutils-2.17.50.0.14 supports Intel64 EFI. + see http://www.kernel.org/pub/linux/devel/binutils/ + [ elilo/gnu-efi with x86_64 support need this binutils support ] + +4. x86_64 platform with EFI/UEFI firmware. + +Mechanics: +--------- +- Apply the EFI64 kernel patches and build with the following configuration. + CONFIG_EFI=y + EFI_FB=y + CONFIG_FRAMEBUFFER_CONSOLE=y + CONFIG_EFI_VARS=y + +- Create a VFAT partition on the disk +- Copy the following to the VFAT partition: + elilo bootloader with x86_64 support and elilo configuration file + efi64 kernel image and initrd. Instructions on building elilo + and its dependencies can be found in the elilo sourceforge project. +- Boot to EFI shell and invoke elilo choosing efi64 kernel image +- On UEFI2.0 firmware systems, pass vga=normal for boot messages to show up + console. You can pass along the 'resume' boot option to test suspend/resume. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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