From 94aebe6cc3111c7c9e3cd1311cc9793d01cc3ded Mon Sep 17 00:00:00 2001
From: Stefan Roese <sr@denx.de>
Date: Thu, 5 Jan 2012 11:19:50 +0100
Subject: [PATCH] Makefile: Add u-boot.spr build target (SPEAr)

On x600 (SPEAr600) U-Boot is appended to U-Boot SPL. Both images are
created using mkimage (crc etc), so that the ROM bootloader can check
its integrity. Padding needs to be done to the SPL image (with
mkimage header) and not the binary. Otherwise the resulting image
which is loaded/copied by the ROM bootloader to SRAM doesn't fit.
The resulting image containing both U-Boot images is called u-boot.spr.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Amit Virdi <amit.virdi@st.com>
Cc: Vipin Kumar <vipin.kumar@st.com>
---
 Makefile  | 17 +++++++++++++++++
 config.mk |  4 ++++
 2 files changed, 21 insertions(+)

diff --git a/Makefile b/Makefile
index 0197239c8d2..85e36ecff59 100644
--- a/Makefile
+++ b/Makefile
@@ -456,6 +456,22 @@ $(obj)u-boot.sb:       $(obj)u-boot.bin $(obj)spl/u-boot-spl.bin
 		elftosb -zdf imx28 -c $(TOPDIR)/board/$(BOARDDIR)/u-boot.bd \
 			-o $(obj)u-boot.sb
 
+# On x600 (SPEAr600) U-Boot is appended to U-Boot SPL.
+# Both images are created using mkimage (crc etc), so that the ROM
+# bootloader can check its integrity. Padding needs to be done to the
+# SPL image (with mkimage header) and not the binary. Otherwise the resulting image
+# which is loaded/copied by the ROM bootloader to SRAM doesn't fit.
+# The resulting image containing both U-Boot images is called u-boot.spr
+$(obj)u-boot.spr:	$(obj)u-boot.img $(obj)spl/u-boot-spl.bin
+		$(obj)tools/mkimage -A $(ARCH) -T firmware -C none \
+		-a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n XLOADER \
+		-d $(obj)spl/u-boot-spl.bin $(obj)spl/u-boot-spl.img
+		tr "\000" "\377" < /dev/zero | dd ibs=1 count=$(CONFIG_SPL_PAD_TO) \
+			of=$(obj)spl/u-boot-spl-pad.img 2>/dev/null
+		dd if=$(obj)spl/u-boot-spl.img of=$(obj)spl/u-boot-spl-pad.img \
+			conv=notrunc 2>/dev/null
+		cat $(obj)spl/u-boot-spl-pad.img $(obj)u-boot.img > $@
+
 ifeq ($(CONFIG_SANDBOX),y)
 GEN_UBOOT = \
 		cd $(LNDIR) && $(CC) $(SYMS) -T $(obj)u-boot.lds \
@@ -775,6 +791,7 @@ clobber:	tidy
 	@rm -f $(obj)u-boot.ais
 	@rm -f $(obj)u-boot.dtb
 	@rm -f $(obj)u-boot.sb
+	@rm -f $(obj)u-boot.spr
 	@rm -f $(obj)tools/inca-swap-bytes
 	@rm -f $(obj)arch/powerpc/cpu/mpc824x/bedbug_603e.c
 	@rm -f $(obj)arch/powerpc/cpu/mpc83xx/ddr-gen?.c
diff --git a/config.mk b/config.mk
index c239f2315d4..3dcea6a8f99 100644
--- a/config.mk
+++ b/config.mk
@@ -205,6 +205,10 @@ ifneq ($(CONFIG_SPL_TEXT_BASE),)
 CPPFLAGS += -DCONFIG_SPL_TEXT_BASE=$(CONFIG_SPL_TEXT_BASE)
 endif
 
+ifneq ($(CONFIG_SPL_PAD_TO),)
+CPPFLAGS += -DCONFIG_SPL_PAD_TO=$(CONFIG_SPL_PAD_TO)
+endif
+
 ifeq ($(CONFIG_SPL_BUILD),y)
 CPPFLAGS += -DCONFIG_SPL_BUILD
 endif
-- 
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