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authorMagnus Damm <damm@igel.co.jp>2009-07-29 15:04:05 +0000
committerPaul Mundt <lethal@linux-sh.org>2009-07-30 00:24:03 +0900
commit3c928320b2254cb6c8d8a7919a1fcf94ca7cae66 (patch)
treeee2682b83916592c63202cb8749e1e35cfc5728a /arch/sh/boot
parentfd78a76aefb5bf28a11d6960d29e03a11db62320 (diff)
downloadvexpress-lsk-3c928320b2254cb6c8d8a7919a1fcf94ca7cae66.tar.gz
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>
Diffstat (limited to 'arch/sh/boot')
-rw-r--r--arch/sh/boot/Makefile11
-rw-r--r--arch/sh/boot/romimage/Makefile19
-rw-r--r--arch/sh/boot/romimage/head.S10
-rw-r--r--arch/sh/boot/romimage/vmlinux.scr6
4 files changed, 44 insertions, 2 deletions
diff --git a/arch/sh/boot/Makefile b/arch/sh/boot/Makefile
index dd2a852041e..a1316872be6 100644
--- a/arch/sh/boot/Makefile
+++ b/arch/sh/boot/Makefile
@@ -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" \
diff --git a/arch/sh/boot/romimage/Makefile b/arch/sh/boot/romimage/Makefile
new file mode 100644
index 00000000000..5806eee84f6
--- /dev/null
+++ b/arch/sh/boot/romimage/Makefile
@@ -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)
diff --git a/arch/sh/boot/romimage/head.S b/arch/sh/boot/romimage/head.S
new file mode 100644
index 00000000000..97a087bc9c4
--- /dev/null
+++ b/arch/sh/boot/romimage/head.S
@@ -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>
diff --git a/arch/sh/boot/romimage/vmlinux.scr b/arch/sh/boot/romimage/vmlinux.scr
new file mode 100644
index 00000000000..287c08f8b4b
--- /dev/null
+++ b/arch/sh/boot/romimage/vmlinux.scr
@@ -0,0 +1,6 @@
+SECTIONS
+{
+ .text : {
+ *(.data)
+ }
+}