This is mostly useful during the initial port of barebox to a new board which is supported by u-boot. It also allows starting barebox from a SRAM-based u-boot SPL. A different load address can be set like this: make barebox.uimage UIMAGE_BASE=0x80000000 This patch was developed together with Sascha Hauer. Thanks! Signed-off-by: Jan Luebbe <jlu@xxxxxxxxxxxxxx> --- Makefile | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/Makefile b/Makefile index 0f1a319..9381e77 100644 --- a/Makefile +++ b/Makefile @@ -686,6 +686,22 @@ ifndef CONFIG_PBL_IMAGE $(call cmd,check_file_size,$(CONFIG_BAREBOX_MAX_IMAGE_SIZE)) endif +# By default the uImage load address is 2MB below CONFIG_TEXT_BASE, +# leaving space for the compressed PBL image at 1MB below CONFIG_TEXT_BASE. +UIMAGE_BASE ?= $(shell printf "0x%08x" $$(($(CONFIG_TEXT_BASE) - 0x200000))) + +# For development provide a target which makes barebox loadable by an +# unmodified u-boot +quiet_cmd_barebox_mkimage = MKIMAGE $@ + cmd_barebox_mkimage = $(srctree)/scripts/mkimage -A $(ARCH) -T firmware -C none \ + -O barebox -a $(UIMAGE_BASE) -e $(UIMAGE_BASE) \ + -n "barebox $(KERNELRELEASE)" -d $< $@ + +# barebox.uimage is build from the raw barebox binary, without any other +# headers. +barebox.uimage: $(KBUILD_BINARY) FORCE + $(call if_changed,barebox_mkimage) + ifdef CONFIG_X86 barebox.S: barebox ifdef CONFIG_X86_HDBOOT -- 1.7.10.4 _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
