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drivers/mrc_cache: Always generate an FMAP region

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This automatically generates an FMAP region for the MRC_CACHE driver
which is easier to handle than a cbfsfile.

Adds some spaces and more comments to Makefile.inc to improve
readability.

Tested on Thinkpad x200 with some proof of concept patches.

Change-Id: Iaaca36b1123b094ec1bbe5df4fb25660919173ca
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/23150
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Arthur Heymans
2018-01-07 23:12:49 +01:00
parent 1e931f3e47
commit 82aa8338c7
6 changed files with 69 additions and 43 deletions
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21
src/drivers/mrc_cache/Makefile.inc
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@@ -1,19 +1,2 @@
ifeq ($(CONFIG_CACHE_MRC_SETTINGS),y)
romstage-y += mrc_cache.c
ramstage-y += mrc_cache.c
# Create and add the MRC cache to the cbfs image
ifneq ($(CONFIG_CHROMEOS),y)
$(obj)/mrc.cache: $(obj)/config.h
dd if=/dev/zero count=1 \
bs=$(shell printf "%d" $(CONFIG_MRC_SETTINGS_CACHE_SIZE) ) | \
tr '\000' '\377' > $@
cbfs-files-y += mrc.cache
mrc.cache-file := $(obj)/mrc.cache
mrc.cache-position := $(CONFIG_MRC_SETTINGS_CACHE_BASE)
mrc.cache-type := mrc_cache
endif # ifneq ($(CONFIG_CHROMEOS),y)
endif # ifeq ($(CONFIG_CACHE_MRC_SETTINGS),y)
romstage-$(CONFIG_CACHE_MRC_SETTINGS) += mrc_cache.c
ramstage-$(CONFIG_CACHE_MRC_SETTINGS) += mrc_cache.c