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| author | Jan Kiszka <jan.kiszka@siemens.com> | 2017-06-02 13:52:04 +0000 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-06-05 17:50:42 +0200 |
| commit | 2959c95d510cc45b246ba727eb8fdf8b601c6eec (patch) | |
| tree | 75d128ac47219fe8ddb5258bec080769f152d9c8 /drivers/firmware/efi | |
| parent | 2a457fb31df62c6b482f78e4f74aaed99271f44d (diff) | |
| download | linux-2959c95d510cc45b246ba727eb8fdf8b601c6eec.tar.gz linux-2959c95d510cc45b246ba727eb8fdf8b601c6eec.tar.bz2 linux-2959c95d510cc45b246ba727eb8fdf8b601c6eec.zip | |
efi/capsule: Add support for Quark security header
The firmware for Quark X102x prepends a security header to the capsule
which is needed to support the mandatory secure boot on this processor.
The header can be detected by checking for the "_CSH" signature and -
to avoid any GUID conflict - validating its size field to contain the
expected value. Then we need to look for the EFI header right after the
security header and pass the real header to __efi_capsule_setup_info.
To be minimal invasive and maximal safe, the quirk version of
efi_capsule_setup_info() is only effective on Quark processors.
Tested-by: Bryan O'Donoghue <pure.logic@nexus-software.ie>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/20170602135207.21708-11-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/firmware/efi')
| -rw-r--r-- | drivers/firmware/efi/Kconfig | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/firmware/efi/Kconfig b/drivers/firmware/efi/Kconfig index 2e78b0b96d74..394db40ed374 100644 --- a/drivers/firmware/efi/Kconfig +++ b/drivers/firmware/efi/Kconfig @@ -112,6 +112,15 @@ config EFI_CAPSULE_LOADER Most users should say N. +config EFI_CAPSULE_QUIRK_QUARK_CSH + boolean "Add support for Quark capsules with non-standard headers" + depends on X86 && !64BIT + select EFI_CAPSULE_LOADER + default y + help + Add support for processing Quark X1000 EFI capsules, whose header + layout deviates from the layout mandated by the UEFI specification. + config EFI_TEST tristate "EFI Runtime Service Tests Support" depends on EFI |