| Message ID | 20230310100752.3328321-1-luca.ceresoli@bootlin.com |
|---|---|
| State | Accepted |
| Commit | 95942f99a7057359c07bf383214d57154e2466fe |
| Delegated to: | Stefano Babic |
| Headers | show |
| Series | arm: imx: add u-boot-nand.imx to boot from NAND without SPL | expand |
> U-Boot can be booted from NAND without SPL by prepending the DCD header to > the actual U-Boot binary. However this requires prepending 1024 bytes to > u-boot.imx (DCD + u-boot.bin). > There is already a similar target to build spl/u-boot-nand-spl.imx, add the > same option for no-SPL boot. > Tested on i.MX6ULL. > The resulting layout of u-boot-nand.imx is: > - Offset 0x0000 (0 KiB): padding > - Offset 0x0400 (1 KiB): DCD header > - Offset 0x1000 (4 KiB): u-boot.bin > Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com> Applied to u-boot-imx, next, thanks ! Best regards, Stefano Babic
diff --git a/Makefile b/Makefile index e760bacf9451..db124476d6e6 100644 --- a/Makefile +++ b/Makefile @@ -1522,6 +1522,9 @@ endif u-boot.uim: u-boot.bin FORCE $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@ +u-boot-nand.imx: u-boot.imx FORCE + $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@ + u-boot-with-spl.imx u-boot-with-nand-spl.imx: SPL $(if $(CONFIG_OF_SEPARATE),u-boot.img,u-boot.uim) FORCE $(Q)$(MAKE) $(build)=arch/arm/mach-imx $@ diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile index 4dfc60eedc43..c386132dacd1 100644 --- a/arch/arm/mach-imx/Makefile +++ b/arch/arm/mach-imx/Makefile @@ -132,6 +132,12 @@ u-boot.imx: MKIMAGEOUTPUT = u-boot.imx.log u-boot.imx: u-boot.bin u-boot.cfgout $(PLUGIN).bin FORCE $(call if_changed,mkimage) +quiet_cmd_u-boot-nand_imx = GEN $@ +cmd_u-boot-nand_imx = (dd bs=1024 count=1 if=/dev/zero 2>/dev/null) | cat - $< > $@ + +u-boot-nand.imx: u-boot.imx FORCE + $(call if_changed,u-boot-nand_imx) + ifeq ($(CONFIG_MULTI_DTB_FIT),y) MKIMAGEFLAGS_u-boot-dtb.imx = -n $(filter-out $(PLUGIN).bin $< $(PHONY),$^) \ -T $(IMAGE_TYPE) -e $(CONFIG_TEXT_BASE)
U-Boot can be booted from NAND without SPL by prepending the DCD header to the actual U-Boot binary. However this requires prepending 1024 bytes to u-boot.imx (DCD + u-boot.bin). There is already a similar target to build spl/u-boot-nand-spl.imx, add the same option for no-SPL boot. Tested on i.MX6ULL. The resulting layout of u-boot-nand.imx is: - Offset 0x0000 (0 KiB): padding - Offset 0x0400 (1 KiB): DCD header - Offset 0x1000 (4 KiB): u-boot.bin Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com> --- Makefile | 3 +++ arch/arm/mach-imx/Makefile | 6 ++++++ 2 files changed, 9 insertions(+)