[coreboot-gerrit] Change in coreboot[master]: soc/mediatek/mt8183: Compress calibration blob with LZ4

[Hung-Te Lin (Code Review)]

Hung-Te Lin has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/36054 )

Change subject: soc/mediatek/mt8183: Compress calibration blob with LZ4
......................................................................

soc/mediatek/mt8183: Compress calibration blob with LZ4

The DRAM calibration blob can be compressed using pre-RAM algorithm
(currently LZ4), which will save ~12ms in boot time.

On Kodama, boot time difference:
 Before: 1,082,711
 After:  1,070,309

BUG=b:139099592
TEST=build and boot, cbfstool coreboot.rom print -v (see dram compressed)
BRANCH=kukui

Change-Id: Ic3bd49d67ee6f80a0e4d8f6945744642611edf64
Signed-off-by: Hung-Te Lin 
---
M src/soc/mediatek/mt8183/Makefile.inc
1 file changed, 1 insertion(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/54/36054/1

diff --git a/src/soc/mediatek/mt8183/Makefile.inc b/src/soc/mediatek/mt8183/Makefile.inc
index 70fd080..e3d3db0 100644
--- a/src/soc/mediatek/mt8183/Makefile.inc
+++ b/src/soc/mediatek/mt8183/Makefile.inc
@@ -84,7 +84,7 @@
 DRAM_CBFS := $(CONFIG_CBFS_PREFIX)/dram
 $(DRAM_CBFS)-file := $(MT8183_BLOB_DIR)/dram.elf
 $(DRAM_CBFS)-type := stage
-$(DRAM_CBFS)-compression := none
+$(DRAM_CBFS)-compression := $(CBFS_PRERAM_COMPRESS_FLAG)
 ifneq ($(wildcard $($(DRAM_CBFS)-file)),)
    cbfs-files-y += $(DRAM_CBFS)
 endif