soc/intel/jasperlake: Enable FSP-S compression
Use LZ4 compression technique to compress FSP-S. This provides some
SPI ROM space savings(~60 KiB) in each CBFS. FSP-M is XIP and hence not
compressed. LZ4 is chosen over LZMA since the decompression saves
~50 ms for an extra overhead of ~1.5 KiB.
LZ4 Compression:
fsps.bin 0xa9fc0 fsp 203423 LZ4 (262144 decompressed)
LZ4 Decompression:
17:starting LZ4 decompress (ignore for x86) 433,550 (1,154)
18:finished LZ4 decompress (ignore for x86) 461,620 (28,069)
LZMA Compression:
fsps.bin 0xa9fc0 fsp 202132 LZMA (262144 decompressed)
LZMA Decompression:
15:starting LZMA decompress (ignore for x86) 478,448 (1,174)
16:finished LZMA decompress (ignore for x86) 557,725 (79,277)
BUG=b:158034451
TEST=Build and boot waddledoo mainboard.
Change-Id: I416b1d91d7f4836b1e9c641b0fe07b39876364ba
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42445
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Justin TerAvest <teravest@chromium.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
diff --git a/src/soc/intel/jasperlake/Kconfig b/src/soc/intel/jasperlake/Kconfig
index 4e514c4..72b0c5e 100644
--- a/src/soc/intel/jasperlake/Kconfig
+++ b/src/soc/intel/jasperlake/Kconfig
@@ -17,6 +17,7 @@
select CACHE_MRC_SETTINGS
select CPU_INTEL_COMMON
select CPU_INTEL_FIRMWARE_INTERFACE_TABLE
+ select FSP_COMPRESS_FSP_S_LZ4
select FSP_M_XIP
select GENERIC_GPIO_LIB
select HAVE_FSP_GOP