diff options
| author | H. Peter Anvin <hpa@zytor.com> | 2008-05-30 17:19:03 -0700 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2008-05-30 17:19:03 -0700 |
| commit | 23deb06821442506615f34bd92ccd6a2422629d7 (patch) | |
| tree | 5e95dba1471007a161e19844fab2d60d422f5423 /Documentation/x86/x86_64/uefi.txt | |
| parent | 4039feb5bae72a5fed9ba6bc1a9cfd8dfe0a8613 (diff) | |
x86: move x86-specific documentation into Documentation/x86
The current organization of the x86 documentation makes it appear as
if the "i386" documentation doesn't apply to x86-64, which is does.
Thus, move that documentation into Documentation/x86, and move the
x86-64-specific stuff into Documentation/x86/x86_64 with the eventual
goal to move stuff that isn't actually 64-bit specific back into
Documentation/x86.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'Documentation/x86/x86_64/uefi.txt')
| -rw-r--r-- | Documentation/x86/x86_64/uefi.txt | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/Documentation/x86/x86_64/uefi.txt b/Documentation/x86/x86_64/uefi.txt new file mode 100644 index 00000000000..7d77120a518 --- /dev/null +++ b/Documentation/x86/x86_64/uefi.txt @@ -0,0 +1,38 @@ +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 + 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, + 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. +- 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 |