diff options
| author |   Kweh, Hock Leong <hock.leong.kweh@intel.com> | 2016-04-25 21:07:01 +0100 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2016-04-28 11:34:05 +0200 |
| commit | 65117f1aa1b2d145fd5ca376bde642794d0aae1b (patch) | |
| tree | 05f8f72fd15dd3c98060ceda1cfb2be5f91c60b0 /drivers/firmware/efi/Kconfig | |
| parent | x86/efi: Force EFI reboot to process pending capsules (diff) | |
| download | linux-dev-65117f1aa1b2d145fd5ca376bde642794d0aae1b.tar.xz linux-dev-65117f1aa1b2d145fd5ca376bde642794d0aae1b.zip | |
efi: Add misc char driver interface to update EFI firmware
This patch introduces a kernel module to expose a capsule loader
interface (misc char device file note) for users to upload capsule
binaries.
Example:
cat firmware.bin > /dev/efi_capsule_loader
Any upload error will be returned while doing "cat" through file
operation write() function call.
Signed-off-by: Kweh, Hock Leong <hock.leong.kweh@intel.com>
[ Update comments and Kconfig text ]
Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk>
Reviewed-by: Bryan O'Donoghue <pure.logic@nexus-software.ie>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Peter Jones <pjones@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sam Protsenko <semen.protsenko@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: joeyli <jlee@suse.com>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/1461614832-17633-30-git-send-email-matt@codeblueprint.co.uk
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/firmware/efi/Kconfig')
| -rw-r--r-- | drivers/firmware/efi/Kconfig | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/firmware/efi/Kconfig b/drivers/firmware/efi/Kconfig index 0b0b635aa101..6394152f648f 100644 --- a/drivers/firmware/efi/Kconfig +++ b/drivers/firmware/efi/Kconfig @@ -102,6 +102,16 @@ config EFI_BOOTLOADER_CONTROL bootloader reads this reboot reason and takes particular action according to its policy. +config EFI_CAPSULE_LOADER + tristate "EFI capsule loader" + depends on EFI + help + This option exposes a loader interface "/dev/efi_capsule_loader" for + users to load EFI capsules. This driver requires working runtime + capsule support in the firmware, which many OEMs do not provide. + + Most users should say N. + endmenu config UEFI_CPER |