From 203af604644abc156acac61da3fe8c280639cd3a Mon Sep 17 00:00:00 2001 From: Karthikeyan Ramasubramanian Date: Wed, 17 Jun 2020 00:12:31 -0600 Subject: soc/intel/cannonlake: Enable FSP-S compression Use LZMA compression technique to compress FSP-S. This provides some SPI ROM space savings(~27 KiB) in each CBFS. FSP-M is XIP and hence not compressed. LZMA is chosen over LZ4 since it provides extra space savings of ~1 KiB for the decompression overhead of ~7 ms. LZMA Compression: fsps.bin 0xd1fc0 fsp 190132 LZMA (217088 decompressed) LZMA Decompression: 15:starting LZMA decompress (ignore for x86) 343,289 (417) 16:finished LZMA decompress (ignore for x86) 373,922 (30,632) LZ4 Compression: fsps.bin 0xd1fc0 fsp 191310 LZ4 (217088 decompressed) LZ4 Decompression: 17:starting LZ4 decompress (ignore for x86) 345,676 (581) 18:finished LZ4 decompress (ignore for x86) 369,101 (23,424) BUG=b:158034451 TEST=Build and boot helios mainboard. Change-Id: Ic0d0d81c81eaa365f3dbfdd2e00ac76cea287387 Signed-off-by: Karthikeyan Ramasubramanian Reviewed-on: https://review.coreboot.org/c/coreboot/+/42446 Reviewed-by: Furquan Shaikh Reviewed-by: Edward O'Callaghan Tested-by: build bot (Jenkins) --- src/soc/intel/cannonlake/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/src/soc/intel/cannonlake/Kconfig b/src/soc/intel/cannonlake/Kconfig index 6ec3f02e00..fc7fb460d0 100644 --- a/src/soc/intel/cannonlake/Kconfig +++ b/src/soc/intel/cannonlake/Kconfig @@ -67,6 +67,7 @@ config CPU_SPECIFIC_OPTIONS select CACHE_MRC_SETTINGS select CPU_INTEL_COMMON select CPU_INTEL_FIRMWARE_INTERFACE_TABLE + select FSP_COMPRESS_FSP_S_LZMA select FSP_M_XIP select GENERIC_GPIO_LIB select HAVE_FSP_GOP -- cgit v1.2.3