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: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Magnus Damm 2009-07-29 15:04:05 +00:00 committed by Paul Mundt
parent fd78a76aef
commit 3c928320b2
6 changed files with 46 additions and 3 deletions

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@ -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

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@ -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" \

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@ -0,0 +1,19 @@
#
# 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)

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@ -0,0 +1,10 @@
/*
* linux/arch/sh/boot/romimage/head.S
*
* Board specific setup code, executed before zImage loader
*/
.text
.global romstart
romstart:
#include <romimage.h>

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@ -0,0 +1,6 @@
SECTIONS
{
.text : {
*(.data)
}
}

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@ -0,0 +1 @@
/* do nothing here by default */