X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=Documentation%2Fx86_64%2Fuefi.txt;h=7d77120a51841aea77164a6aab2f682f10ca1a2d;hb=63e9b66e29357dd12e8b1d3ebf7036e7591f81e3;hp=91a98edfb58824a7461ccd03d6decccfa5b27e8c;hpb=982286d1b8e438f595cdc9304cc4c185c7b90a39;p=powerpc.git

diff --git a/Documentation/x86_64/uefi.txt b/Documentation/x86_64/uefi.txt
index 91a98edfb5..7d77120a51 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