Use LZ4 compression technique to compress FSP-S. This provides some
SPI ROM space savings (~36 KiB) in each CBFS. FSP-M is XIP and hence not
compressed. LZ4 is chosen over LZMA since the decompression saves
~25 ms for an extra overhead of ~1KiB.
LZ4 Compression:
fsps.bin 0xe6fc0 fsp 254262 LZ4 (290816 decompressed)
LZ4 Decompression:
17:starting LZ4 decompress (ignore for x86) 712,361 (1,072)
18:finished LZ4 decompress (ignore for x86) 750,695 (38,334)
LZMA Compression:
fsps.bin 0xe6fc0 fsp 253415 LZMA (290816 decompressed)
LZMA Decompression:
15:starting LZMA decompress (ignore for x86) 707,696 (1,150)
16:finished LZMA decompress (ignore for x86) 767,763 (60,067)
BUG=b:158034451
TEST=Build and boot volteer mainboard.
Change-Id: I91e33eb7b688b5383f3a0075a28ac21250314973
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42444
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
6abee84250