From: Magnus Damm <magnus.damm@gmail.com>
To: linux-sh@vger.kernel.org
Subject: [PATCH] sh: romImage support V2
Date: Wed, 29 Jul 2009 15:04:05 +0000 [thread overview]
Message-ID: <20090729150405.4599.87883.sendpatchset@rx1.opensource.se> (raw)
From: Magnus Damm <damm@igel.co.jp>
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>
---
arch/sh/Makefile | 2 +-
arch/sh/boot/Makefile | 11 +++++++++--
arch/sh/boot/romimage/Makefile | 19 +++++++++++++++++++
arch/sh/boot/romimage/head.S | 10 ++++++++++
arch/sh/boot/romimage/vmlinux.scr | 6 ++++++
arch/sh/include/mach-common/romimage.h | 1 +
6 files changed, 46 insertions(+), 3 deletions(-)
--- 0001/arch/sh/Makefile
+++ work/arch/sh/Makefile 2009-07-29 22:59:44.000000000 +0900
@@ -195,7 +195,7 @@ libs-$(CONFIG_SUPERH32) := arch/sh/lib/
libs-$(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 $(BOOT_TARGETS) FORCE
maketools: include/linux/version.h FORCE
--- 0001/arch/sh/boot/Makefile
+++ work/arch/sh/boot/Makefile 2009-07-29 23:45:42.000000000 +0900
@@ -24,9 +24,9 @@ suffix-$(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
$(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" \
--- /dev/null
+++ work/arch/sh/boot/romimage/Makefile 2009-07-29 23:45:42.000000000 +0900
@@ -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)
--- /dev/null
+++ work/arch/sh/boot/romimage/head.S 2009-07-29 22:59:44.000000000 +0900
@@ -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>
--- /dev/null
+++ work/arch/sh/boot/romimage/vmlinux.scr 2009-07-29 23:45:42.000000000 +0900
@@ -0,0 +1,6 @@
+SECTIONS
+{
+ .text : {
+ *(.data)
+ }
+}
--- /dev/null
+++ work/arch/sh/include/mach-common/romimage.h 2009-07-29 22:59:44.000000000 +0900
@@ -0,0 +1 @@
+/* do nothing here by default */
next reply other threads:[~2009-07-29 15:04 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-29 15:04 Magnus Damm [this message]
-- strict thread matches above, loose matches on Subject: below --
2009-08-04 5:44 [PATCH] sh: romImage support V2 Paul Mundt
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