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bcm963xx: image generation using image tagger

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This adds CFE tagged image generation in the BCM963xx target image Makefile.
It has to generate its own LZMA compressed kernel because CFE is a LZMA nazi.
It also seems that the Broadcom image tagger as well as CFE use AdvanceCOMP,
which is based on a slightly older LZMA SDK. Anyways, some of the code is
GPL, some of it is LGPL, so it might be that Broadcom owes some sources.
Also, LZMA has a bug which causes it to generate different output when you
are using stdin / stdout compared to plain files. I've just worked around
the issue by using plain files.

Signed-off-by: Axel Gembe <ago@bastart.eu.org>


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@11171 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nbd 2008-05-18 17:30:04 +00:00
parent 72ac579241
commit 8a5477f586
1 changed files with 27 additions and 0 deletions
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27
target/linux/brcm63xx/image/Makefile
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@ -27,25 +27,52 @@ define trxalign/squashfs
-a 1024
endef
define Image/Build/CFE
# Generate the tagged image
$(STAGING_DIR_HOST)/bin/imagetag -i $(KDIR)/vmlinux.lzma.cfe -f $(KDIR)/root.$(1) \
-o $(BIN_DIR)/openwrt-$(2)-$(1)-cfe.bin \
-b $(2) -c $(3) -e $(LOADADDR) -l $(LOADADDR)
# -b $(2) -c $(3) -e $(KERNEL_ENTRY) -l $(LOADADDR)
$(call prepare_generic_squashfs,$(BIN_DIR)/openwrt-$(2)-$(1)-cfe.bin)
endef
define Build/Clean
$(MAKE) -C lzma-loader clean
endef
define Image/Prepare
# Standard LZMA kernel
cat $(KDIR)/vmlinux | $(STAGING_DIR_HOST)/bin/lzma e -si -so -eos -lc1 -lp2 -pb2 > $(KDIR)/vmlinux.lzma
# CFE is a LZMA nazi! It took me hours to find out the parameters!
# Also I think lzma has a bug cause it generates different output depending on
# if you use stdin / stdout or not. Use files instead of stdio here, cause
# otherwise CFE will complain and not boot the image.
$(STAGING_DIR_HOST)/bin/lzma e -d22 -fb64 -a1 $(KDIR)/vmlinux $(KDIR)/vmlinux.lzma.tmp
# Strip out the length, CFE doesn't like this
dd if=$(KDIR)/vmlinux.lzma.tmp of=$(KDIR)/vmlinux.lzma.cfe bs=5 count=1
dd if=$(KDIR)/vmlinux.lzma.tmp of=$(KDIR)/vmlinux.lzma.cfe ibs=13 obs=5 skip=1 seek=1 conv=notrunc
rm -f $(KDIR)/vmlinux.lzma.tmp
# Build the LZMA loader
rm -f $(KDIR)/loader.gz
$(MAKE) -C lzma-loader \
BUILD_DIR="$(KDIR)" \
TARGET="$(KDIR)" \
clean install
echo -ne "\\x00" >> $(KDIR)/loader.gz
rm -f $(KDIR)/fs_mark
touch $(KDIR)/fs_mark
$(call prepare_generic_squashfs,$(KDIR)/fs_mark)
endef
define Image/Build
$(STAGING_DIR_HOST)/bin/trx -o $(BIN_DIR)/openwrt-$(BOARD)-$(1).trx -f $(KDIR)/loader.gz -f $(KDIR)/vmlinux.lzma $(call trxalign/$(1)) -f $(KDIR)/root.$(1)
$(call Image/Build/CFE,$(1),96345GW2,6345)
endef
$(eval $(call BuildImage))