scripts: sunxi: Build an raw SPL image

Introduce a new sunxi-spl-with-ecc.bin image with already the right header,
ECC, randomizer and padding for the BROM to be able to read it.

It needs to be flashed using a raw access to the NAND so that the
controller doesn't change a thing to it, since we already have all the
right parameters.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Reviewed-by: Heiko Schocher <hs@denx.de>

scripts/Makefile.spl

@@ -179,6 +179,10 @@ endif
 
 ifdef CONFIG_ARCH_SUNXI
 ALL-y	+= $(obj)/sunxi-spl.bin
+
+ifdef CONFIG_NAND_SUNXI
+ALL-y	+= $(obj)/sunxi-spl-with-ecc.bin
+endif
 endif
 
 ifeq ($(CONFIG_SYS_SOC),"at91")
@@ -300,6 +304,17 @@ cmd_mksunxiboot = $(objtree)/tools/mksunxiboot $< $@
 $(obj)/sunxi-spl.bin: $(obj)/$(SPL_BIN).bin FORCE
 	$(call if_changed,mksunxiboot)
 
+quiet_cmd_sunxi_spl_image_builder = SUNXI_SPL_IMAGE_BUILDER $@
+cmd_sunxi_spl_image_builder = $(objtree)/tools/sunxi-spl-image-builder \
+				-c $(CONFIG_NAND_SUNXI_SPL_ECC_STRENGTH)/$(CONFIG_NAND_SUNXI_SPL_ECC_SIZE) \
+				-p $(CONFIG_SYS_NAND_PAGE_SIZE) \
+				-o $(CONFIG_SYS_NAND_OOBSIZE) \
+				-u $(CONFIG_NAND_SUNXI_SPL_USABLE_PAGE_SIZE) \
+				-e $(CONFIG_SYS_NAND_BLOCK_SIZE) \
+				-s -b $< $@
+$(obj)/sunxi-spl-with-ecc.bin: $(obj)/sunxi-spl.bin
+	$(call if_changed,sunxi_spl_image_builder)
+
 # Rule to link u-boot-spl
 # May be overridden by arch/$(ARCH)/config.mk
 quiet_cmd_u-boot-spl ?= LD      $@