Sandrine Bailleux 0b4e59211b TBBR: Reduce size of hash buffers when possible ... The TBBR implementation extracts hashes from certificates and stores them in static buffers. TF-A supports 3 variants of SHA right now: SHA-256, SHA-384 and SHA-512. When support for SHA-512 was added in commit 9a3088a5f5 ("tbbr: Add build flag HASH_ALG to let the user to select the SHA"), the hash buffers got unconditionally increased from 51 to 83 bytes each. We can reduce that space if we're using SHA-256 or SHA-384. This saves some BSS space in both BL1 and BL2: - BL1 with SHA-256: saving 168 bytes. - BL1 with SHA-384: saving 80 bytes. - BL2 with SHA-256: saving 384 bytes. - BL2 with SHA-384: saving 192 bytes. Change-Id: I0d02e5dc5f0162e82339c768609c9766cfe7e2bd Signed-off-by: Sandrine Bailleux <sandrine.bailleux@arm.com>		2020-02-18 09:47:12 +01:00
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tbbr_cot.c	TBBR: Reduce size of hash buffers when possible	2020-02-18 09:47:12 +01:00