diff options
| author | Karthikeyan Ramasubramanian <kramasub@google.com> | 2020-06-16 23:29:28 -0600 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2020-06-18 08:33:09 +0000 |
| commit | 6abee842504bc41e1915d19588edeb62d3e0dca7 (patch) | |
| tree | 058973449fe12cd9ecc15d71e395f9521cc434a1 /src/soc | |
| parent | 8021b474fb83c201e3d8d9fbc82ef8d5d9ac4a54 (diff) | |
soc/intel/tigerlake: Enable FSP-S compression
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>
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/intel/tigerlake/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/soc/intel/tigerlake/Kconfig b/src/soc/intel/tigerlake/Kconfig index a61cbfc85e..f502940b0b 100644 --- a/src/soc/intel/tigerlake/Kconfig +++ b/src/soc/intel/tigerlake/Kconfig @@ -17,6 +17,7 @@ config CPU_SPECIFIC_OPTIONS 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 |