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brcm63xx: add support for attaching dtbs to lzma kernels

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In preparation for switching to dtb based board identification, add
support for building lzma-loader and lzma cfe kernels with dtb
appended.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>

SVN-Revision: 42121
This commit is contained in:
Jonas Gorski 2014-08-11 11:36:55 +00:00
parent 0343c0288e
commit aa572fccb5
1 changed files with 26 additions and 5 deletions
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31
target/linux/brcm63xx/image/Makefile
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@ -31,6 +31,8 @@ define Image/LimitName16
$(shell expr substr "$(1)" 1 16)
endef
TARGET_DTBS:=
define Image/Build/CFE
# Generate the tagged image
$(STAGING_DIR_HOST)/bin/imagetag -i $(KDIR)/vmlinux.lzma.cfe -f $(KDIR)/root.$(1) \
@ -161,21 +163,40 @@ define Image/PrepareLoader
rm -f $(KDIR)/vmlinux$(1).lzma
endef
define Image/Prepare
define Image/PrepareLoaderDTB
# append dtb to vmlinux, then build a standard LZMA loader
cat $(KDIR)/vmlinux$(1) $(DTS_DIR)/$(2).dtb > $(KDIR)/vmlinux$(1)-$(2)
$(call Image/PrepareLoader,$(1)-$(2))
endef
define Image/PrepareCFELzmaKernel
# 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
$(STAGING_DIR_HOST)/bin/lzma e -d22 -fb64 -a1 $(KDIR)/vmlinux$(1) $(KDIR)/vmlinux$(1).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 $(KDIR)/vmlinux.lzma.tmp
dd if=$(KDIR)/vmlinux$(1).lzma.tmp of=$(KDIR)/vmlinux$(1).lzma.cfe bs=5 count=1
dd if=$(KDIR)/vmlinux$(1).lzma.tmp of=$(KDIR)/vmlinux$(1).lzma.cfe ibs=13 obs=5 skip=1 seek=1 conv=notrunc
rm -f $(KDIR)/vmlinux$(1).lzma.tmp
endef
define Image/PrepareCFELzmaKernelDTB
# compile the dts (the dtb will be later reused for the lzma loader)
$(LINUX_DIR)/scripts/dtc/dtc -O dtb -o $(DTS_DIR)/$(1).dtb ../dts/$(1).dts
cat $(KDIR)/vmlinux $(DTS_DIR)/$(1).dtb > $(KDIR)/vmlinux-$(1)
$(call Image/PrepareCFELzmaKernel,-$(1))
endef
define Image/Prepare
$(call Image/PrepareCFELzmaKernel,)
$(foreach board,$(sort $(TARGET_DTBS)), $(call Image/PrepareCFELzmaKernelDTB,$(board)))
ifeq ($(CONFIG_TARGET_ROOTFS_INITRAMFS),y)
$(call Image/PrepareLoader,-initramfs)
$(foreach board,$(sort $(TARGET_DTBS)), $(call Image/PrepareLoaderDTB,-initramfs,$(board)))
endif
rm -f $(KDIR)/fs_mark
touch $(KDIR)/fs_mark