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Diffstat (limited to 'Documentation/x86_64/uefi.txt')
| -rw-r--r-- | Documentation/x86_64/uefi.txt | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/x86_64/uefi.txt b/Documentation/x86_64/uefi.txt index 91a98edfb58..7d77120a518 100644 --- a/Documentation/x86_64/uefi.txt +++ b/Documentation/x86_64/uefi.txt @@ -19,6 +19,10 @@ 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, @@ -27,3 +31,8 @@ Mechanics: 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 |