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Commit 3c928320 authored by Magnus Damm's avatar Magnus Damm Committed by Paul Mundt
Browse files

sh: romImage support V2 



This patch contains support for the romImage build target V2.

The resulting romImage file should be burned to rom
or flash and could be used as small boot loader.

Board code should keep their setup code in the file
romimage.h located in their mach include directory.

Signed-off-by: default avatarMagnus Damm <damm@igel.co.jp>
Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent fd78a76a

arch/sh/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -195,7 +195,7 @@ libs-$(CONFIG_SUPERH32) := arch/sh/lib/ $(libs-y) 
libs-$(CONFIG_SUPERH64)		:= arch/sh/lib64/ $(libs-y)



BOOT_TARGETS = uImage uImage.bz2 uImage.gz uImage.lzma uImage.srec \

	       zImage vmlinux.srec

	       zImage vmlinux.srec romImage

PHONY += maketools $(BOOT_TARGETS) FORCE



maketools:  include/linux/version.h FORCE

arch/sh/boot/Makefile

+9 −2
Original line number Diff line number Diff line
@@ -24,9 +24,9 @@ suffix-$(CONFIG_KERNEL_GZIP) := gz 
suffix-$(CONFIG_KERNEL_BZIP2) := bz2

suffix-$(CONFIG_KERNEL_LZMA)  := lzma



targets := zImage vmlinux.srec uImage uImage.srec uImage.gz uImage.bz2 uImage.lzma

targets := zImage vmlinux.srec romImage uImage uImage.srec uImage.gz uImage.bz2 uImage.lzma

extra-y += vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma

subdir- := compressed

subdir- := compressed romimage



$(obj)/zImage: $(obj)/compressed/vmlinux FORCE

	$(call if_changed,objcopy)
@@ -35,6 +35,13 @@ $(obj)/zImage: $(obj)/compressed/vmlinux FORCE 
$(obj)/compressed/vmlinux: FORCE

	$(Q)$(MAKE) $(build)=$(obj)/compressed $@



$(obj)/romImage: $(obj)/romimage/vmlinux FORCE

	$(call if_changed,objcopy)

	@echo '  Kernel: $@ is ready'



$(obj)/romimage/vmlinux: $(obj)/zImage FORCE

	$(Q)$(MAKE) $(build)=$(obj)/romimage $@



KERNEL_MEMORY := 0x00000000

ifeq ($(CONFIG_PMB_FIXED),y)

KERNEL_MEMORY := $(shell /bin/bash -c 'printf "0x%08x" \

arch/sh/boot/romimage/Makefile

0 → 100644
+19 −0
Original line number Diff line number Diff line 
#

# linux/arch/sh/boot/romimage/Makefile

#

# create an image suitable for burning to flash from zImage

#



targets		:= vmlinux head.o



OBJECTS = $(obj)/head.o

LDFLAGS_vmlinux := --oformat $(ld-bfd) -Ttext 0 -e romstart



$(obj)/vmlinux: $(OBJECTS) $(obj)/piggy.o FORCE

	$(call if_changed,ld)

	@:



LDFLAGS_piggy.o := -r --format binary --oformat $(ld-bfd) -T



$(obj)/piggy.o: $(obj)/vmlinux.scr arch/sh/boot/zImage FORCE

	$(call if_changed,ld)

arch/sh/boot/romimage/head.S

0 → 100644
+10 −0
Original line number Diff line number Diff line 
/*

 *  linux/arch/sh/boot/romimage/head.S

 *

 * Board specific setup code, executed before zImage loader

 */



.text

	.global	romstart

romstart:

#include <romimage.h>

arch/sh/boot/romimage/vmlinux.scr

0 → 100644
+6 −0
Original line number Diff line number Diff line 
SECTIONS

{

  .text : {

	*(.data)

	}

}