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(parent: 481f75c) | patch
efi: Export more EFI table variables to sysfs
authorDave Young <dyoung@redhat.com>
Fri, 20 Dec 2013 10:02:17 +0000 (18:02 +0800)
committerMatt Fleming <matt.fleming@intel.com>
Sat, 21 Dec 2013 15:29:36 +0000 (15:29 +0000)
commita0998eb15afeffbf52a2c2829318f67df9ac57b8
tree5f19084e93f018407d8dfc3521d073250719e67ftree | snapshot (tar.gz zip)
parent481f75c043cf44ec11c7fbdbbf37d43463f1e719commit | diff
efi: Export more EFI table variables to sysfs

Export fw_vendor, runtime and config table physical addresses to
/sys/firmware/efi/{fw_vendor,runtime,config_table} because kexec kernels
need them.

From EFI spec these 3 variables will be updated to virtual address after
entering virtual mode. But kernel startup code will need the physical
address.

Signed-off-by: Dave Young <dyoung@redhat.com>
Tested-by: Toshi Kani <toshi.kani@hp.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Documentation/ABI/testing/sysfs-firmware-efi [new file with mode: 0644] blob
arch/x86/platform/efi/efi.c diff | blob | blame | history
drivers/firmware/efi/efi.c diff | blob | blame | history
include/linux/efi.h diff | blob | blame | history