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spl: implement CRC check on U-Boot uImage

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SPL currently does not check uImage CRCs when loading U-Boot.

This patch adds checking the uImage CRC when SPL loads U-Boot. It does
this by reusing the existing config option SPL_CRC32_SUPPORT to allow
leaving out the CRC check on boards where the additional code size or
boot time is a problem (adding the CRC check currently adds ~1.4 kByte
to flash).

The SPL_CRC32_SUPPORT config option now gets enabled by default if SPL
support for legacy images is enabled to check the CRC on all boards
that don't actively take countermeasures.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Goldschmidt
2019-02-10 21:34:37 +01:00
committed by Tom Rini
parent 8502fe84a4
commit dae5c2dcdc
3 changed files with 50 additions and 7 deletions
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5
include/spl.h
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@@ -74,6 +74,11 @@ struct spl_image_info {
u32 size;
u32 flags;
void *arg;
#ifdef CONFIG_SPL_LEGACY_IMAGE_CRC_CHECK
ulong dcrc_data;
ulong dcrc_length;
ulong dcrc;
#endif
};
/*