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authorJulius Werner <jwerner@chromium.org>2016-05-31 18:11:10 -0700
committerMartin Roth <martinroth@google.com>2016-06-03 17:24:26 +0200
commit8e97d00755867a41913156ecb08c74aab7398cb2 (patch)
tree21661bb61324d01b1f21d83735a373609a1f2e51 /src/ec
parent3fa4350d6ae358826f12f40f55d917bf85ba7efd (diff)
downloadcoreboot-8e97d00755867a41913156ecb08c74aab7398cb2.tar.xz
chromeec: Move EC image hash to separate file in CBFS
The Chrome OS bootloader is changing its EC software sync mechanism to look for the hash of an EC image in a separate CBFS file, rather than using the CBFS hash attribute of the image itself (see http://crosreview.com/348061). This patch makes coreboot generate appropriate hash files for the new format when it builds and bundles a Chrome EC image. This also allows us to compress the EC image itself. Change-Id: I9aee6b8d24cdf41cb540db86a7569038fc7d9937 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://review.coreboot.org/15039 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Diffstat (limited to 'src/ec')
-rw-r--r--src/ec/google/chromeec/Makefile.inc15
1 files changed, 13 insertions, 2 deletions
diff --git a/src/ec/google/chromeec/Makefile.inc b/src/ec/google/chromeec/Makefile.inc
index 7ae1835ffc..4a03948e65 100644
--- a/src/ec/google/chromeec/Makefile.inc
+++ b/src/ec/google/chromeec/Makefile.inc
@@ -37,13 +37,21 @@ cbfs-files-$(if $(CONFIG_EC_GOOGLE_CHROMEEC_BOARDNAME),y) += ecrw
ecrw-file := $(obj)/mainboard/$(MAINBOARDDIR)/ecrw
ecrw-name := ecrw
ecrw-type := raw
-ecrw-options := -A sha256
+ecrw-compression := $(CBFS_COMPRESS_FLAG)
+cbfs-files-$(if $(CONFIG_EC_GOOGLE_CHROMEEC_BOARDNAME),y) += ecrw.hash
+ecrw.hash-file := $(obj)/mainboard/$(MAINBOARDDIR)/ecrw.hash
+ecrw.hash-name := ecrw.hash
+ecrw.hash-type := raw
cbfs-files-$(if $(CONFIG_EC_GOOGLE_CHROMEEC_PD_BOARDNAME),y) += pdrw
pdrw-file := $(obj)/mainboard/$(MAINBOARDDIR)/pdrw
pdrw-name := pdrw
pdrw-type := raw
-pdrw-options := -A sha256
+pdrw-compression := $(CBFS_COMPRESS_FLAG)
+cbfs-files-$(if $(CONFIG_EC_GOOGLE_CHROMEEC_PD_BOARDNAME),y) += pdrw.hash
+pdrw.hash-file := $(obj)/mainboard/$(MAINBOARDDIR)/pdrw.hash
+pdrw.hash-name := pdrw.hash
+pdrw.hash-type := raw
$(obj)/mainboard/$(MAINBOARDDIR)/ecrw:
$(MAKE) -C $(top)/3rdparty/chromeec \
@@ -63,6 +71,9 @@ $(obj)/mainboard/$(MAINBOARDDIR)/pdrw:
rw
cp $(obj)/external/chromeec/$(CONFIG_EC_GOOGLE_CHROMEEC_PD_BOARDNAME)/RW/ec.RW.flat $@
+$(obj)/mainboard/$(MAINBOARDDIR)/%.hash: $(obj)/mainboard/$(MAINBOARDDIR)/%
+ openssl dgst -sha256 -binary $< > $@
+
.PHONY: $(obj)/mainboard/$(MAINBOARDDIR)/ecrw $(obj)/mainboard/$(MAINBOARDDIR)/pdrw
endif