imx: Add u-boot-with-spl.imx make target

This image combines the SPL with the i.MX header and U-Boot. This is a
convenient way of having a single image to program on some boot devices.

The i.MX header has to be added to the SPL before appending U-Boot, so that the
boot ROM loads only the SPL.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>

.gitignore

@@ -30,6 +30,7 @@
 /u-boot
 /u-boot.hex
 /u-boot.imx
+/u-boot-with-spl.imx
 /u-boot.map
 /u-boot.srec
 /u-boot.ldr

Makefile

@@ -486,6 +486,10 @@ $(obj)u-boot-with-spl.bin: $(obj)spl/u-boot-spl.bin $(obj)u-boot.bin
 		cat $(obj)spl/u-boot-spl-pad.bin $(obj)u-boot.bin > $@
 		rm $(obj)spl/u-boot-spl-pad.bin
 
+$(obj)u-boot-with-spl.imx: $(obj)spl/u-boot-spl.bin $(obj)u-boot.bin
+		$(MAKE) -C $(SRCTREE)/arch/arm/imx-common \
+			$(OBJTREE)/u-boot-with-spl.imx
+
 $(obj)u-boot.ubl:       $(obj)u-boot-with-spl.bin
 		$(obj)tools/mkimage -n $(UBL_CONFIG) -T ublimage \
 		-e $(CONFIG_SYS_TEXT_BASE) -d $< $(obj)u-boot.ubl
@@ -850,6 +854,7 @@ clobber:	tidy
 	@rm -f $(obj)u-boot.kwb
 	@rm -f $(obj)u-boot.pbl
 	@rm -f $(obj)u-boot.imx
+	@rm -f $(obj)u-boot-with-spl.imx
 	@rm -f $(obj)u-boot.ubl
 	@rm -f $(obj)u-boot.ais
 	@rm -f $(obj)u-boot.dtb

arch/arm/imx-common/Makefile

@@ -55,6 +55,12 @@ $(OBJTREE)/SPL: $(OBJTREE)/spl/u-boot-spl.bin $(OBJTREE)/$(patsubst "%",%,$(CONF
 	$(OBJTREE)/tools/mkimage -n $(filter-out %.bin,$^) -T imximage \
 	-e $(CONFIG_SPL_TEXT_BASE) -d $< $@
 
+$(OBJTREE)/u-boot-with-spl.imx: $(OBJTREE)/SPL $(OBJTREE)/u-boot.bin
+	$(OBJCOPY) ${OBJCFLAGS} --pad-to=$(CONFIG_SPL_PAD_TO) \
+		-I binary -O binary $< $(OBJTREE)/spl/u-boot-spl-pad.imx
+	cat $(OBJTREE)/spl/u-boot-spl-pad.imx $(OBJTREE)/u-boot.bin > $@
+	rm $(OBJTREE)/spl/u-boot-spl-pad.imx
+
 
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