[coreboot-gerrit] New patch to review for coreboot: rotor: Compose BOOTBLOCK region

[Daisuke Nojiri (dnojiri@chromium.org)]

Daisuke Nojiri (dnojiri at chromium.org) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/16747

-gerrit

commit 2ffa0cbb62d996984a8c68d697761b44f2b5cee9
Author: Daisuke Nojiri <dnojiri at chromium.org>
Date:   Fri Sep 23 17:40:15 2016 -0700

    rotor: Compose BOOTBLOCK region
    
    This patch adds a Makefile rule for mvmap2315 to install a BDB and
    bootblock code in the BOOTBLOCK region.
    
    BUG=chrome-os-partner:51907
    BRANCH=none
    TEST=emerge-rotor coreboot and examined the output binary
    
    Change-Id: I1e20a09b12f8f8ed4d095aa588e3eb930f359fc5
    Signed-off-by: Daisuke Nojiri <dnojiri at chromium.org>
---
 src/soc/marvell/mvmap2315/Makefile.inc | 57 +++++++++++++++++++++++++++++++++-
 1 file changed, 56 insertions(+), 1 deletion(-)

diff --git a/src/soc/marvell/mvmap2315/Makefile.inc b/src/soc/marvell/mvmap2315/Makefile.inc
index d30ab68..f681c76 100644
--- a/src/soc/marvell/mvmap2315/Makefile.inc
+++ b/src/soc/marvell/mvmap2315/Makefile.inc
@@ -63,4 +63,59 @@ romstage-y += wdt.c
 
 CPPFLAGS_common += -Isrc/soc/marvell/mvmap2315/include/
 
-endif
+# Common Boot Flow parameters
+KEYDIR = $(VBOOT_SOURCE)/tests/testkeys
+BOOTBLOCK_REGION_SIZE = 131072
+BOOTBLOCK_LOAD_ADDRESS = -1
+BDB = $(obj)/bdb.bin
+
+# Calculate bootblock.raw.bin's size and offset
+.PHONY: bootblock_offset
+bootblock_offset: $(objcbfs)/bootblock.raw.bin
+	$(eval BOOTBLOCK_SIZE = $(call file-size, $<))
+	$(eval BOOTBLOCK_OFFSET = $(call int-subtract, \
+		$(BOOTBLOCK_REGION_SIZE) $(BOOTBLOCK_SIZE)))
+
+# Create a BDB. The followings are needed:
+# - Hash of bootblock.raw.bin
+# - Offset, type, partition, load address of bootblock.raw.bin
+# - a BDB key pair
+# - a data key pair
+# - futility (from vboot_reference)
+$(BDB): $(objcbfs)/bootblock.raw.bin $(FUTILITY) bootblock_offset
+	$(FUTILITY) bdb --create $@.tmp \
+		--bdbkey_pri $(KEYDIR)/bdbkey.pem \
+		--bdbkey_pub $(KEYDIR)/bdbkey.keyb \
+		--datakey_pri $(KEYDIR)/datakey.pem \
+		--datakey_pub $(KEYDIR)/datakey.keyb
+	$(FUTILITY) bdb --add $@.tmp \
+		--data $< \
+		--offset $(BOOTBLOCK_OFFSET) \
+		--partition -1 \
+		--type -1 \
+		--load_address $(BOOTBLOCK_LOAD_ADDRESS)
+	$(FUTILITY) bdb --resign $@.tmp \
+		--datakey_pri $(KEYDIR)/datakey.pem
+	$(FUTILITY) bdb --verify $@.tmp \
+		--key_digest $(VBOOT_SOURCE)/tests/testdata/bdbkey_digest.bin
+	mv $@.tmp $@
+
+# Overrides generic pattern rule *.raw.bin -> *.bin for bootblock.bin
+#
+# bootblock.bin is structured as follows:
+# +------------------+
+# |      BDB         |
+# +------------------+
+# | 000............0 |
+# +------------------+
+# |bootblock.raw.bin |
+# +------------------+
+# And this will be placed in BOOTBLOCK region.
+$(objcbfs)/bootblock.bin: $(objcbfs)/bootblock.raw.bin $(BDB) bootblock_offset
+	dd if=/dev/zero bs=1 count=$(BOOTBLOCK_REGION_SIZE) of=$@.tmp
+	dd if=$(BDB) bs=1 count=$(call file-size, $(BDB)) conv=notrunc of=$@.tmp
+	dd if=$(objcbfs)/bootblock.raw.bin bs=1 count=$(BOOTBLOCK_SIZE) \
+		seek=$(BOOTBLOCK_OFFSET) conv=notrunc of=$@.tmp
+	mv $@.tmp $@
+
+endif
\ No newline at end of file