microblaze: support U-BOOT image format
Two version are generated.
linux.bin.ub which is created from linux.bin file
and
simpleImage.<dts>.ub which is created from stripped simpleImage.<dts> file
Load address and entry point is for microblaze first instruction
which is CONFIG_KERNEL_BASE_ADDR variable.
There is possible for simpleImage format parse _start symbol too.
simpleImage.<dts> is still stripped elf file
I cleared simpleImage.<dts>.unstrip file because there are so big.
Signed-off-by: Michal Simek <monstr@monstr.eu>
diff --git a/arch/microblaze/boot/Makefile b/arch/microblaze/boot/Makefile
index 21f1332..902cf98 100644
--- a/arch/microblaze/boot/Makefile
+++ b/arch/microblaze/boot/Makefile
@@ -2,11 +2,13 @@
# arch/microblaze/boot/Makefile
#
+MKIMAGE := $(srctree)/scripts/mkuboot.sh
+
obj-y += linked_dtb.o
targets := linux.bin linux.bin.gz simpleImage.%
-OBJCOPYFLAGS_linux.bin := -O binary
+OBJCOPYFLAGS := -O binary
# Where the DTS files live
dtstree := $(srctree)/$(src)/dts
@@ -24,6 +26,7 @@
[ -n $(CONFIG_INITRAMFS_SOURCE) ] && [ ! -e $(CONFIG_INITRAMFS_SOURCE) ] && \
touch $(CONFIG_INITRAMFS_SOURCE) || echo "No CPIO image"
$(call if_changed,objcopy)
+ $(call if_changed,uimage)
@echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
$(obj)/linux.bin.gz: $(obj)/linux.bin FORCE
@@ -36,8 +39,16 @@
quiet_cmd_strip = STRIP $@
cmd_strip = $(STRIP) -K _start -K _end -K __log_buf -K _fdt_start vmlinux -o $@
+quiet_cmd_uimage = UIMAGE $@.ub
+ cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A microblaze -O linux -T kernel \
+ -C none -n 'Linux-$(KERNELRELEASE)' \
+ -a $(CONFIG_KERNEL_BASE_ADDR) -e $(CONFIG_KERNEL_BASE_ADDR) \
+ -d $@ $@.ub
+
$(obj)/simpleImage.%: vmlinux FORCE
$(call if_changed,cp,.unstrip)
+ $(call if_changed,objcopy)
+ $(call if_changed,uimage)
$(call if_changed,strip)
@echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
@@ -53,4 +64,4 @@
clean-kernel += linux.bin linux.bin.gz simpleImage.*
-clean-files += *.dtb
+clean-files += *.dtb simpleImage.*.unstrip