[U-Boot] [RESEND PATCH v3 1/2] Makefile: Add target to generate hex output for combined spl and dtb

[Simon Goldschmidt]

Am 27.09.2019 um 20:27 schrieb Dalon Westergreen:
> From: Dalon Westergreen <dalon.westergreen at intel.com>
> 
> Stratix10 requires a hex image of the spl plus spl devicetree offset to
> the Stratix10 onchip memory located at SPL_TEXT_BASE.  This patch adds
> a target to generate a hex file from the u-boot-spl binary including the
> dtb offset at SPL_TEST_BASE.
> 
> Objcopy is used to convert the $(SPL_BIN).bin, which includes the spl
> dtb, to a hex file.  the --change-address option is used to offset the
> hex to SPL_TEXT_BASE as objcopy on the spl binary will not result in
> a hex file appropriately offset at SPL_TEXT_BASE.
> 
> Signed-off-by: Dalon Westergreen <dalon.westergreen at intel.com>
> 
> ---
> Changes in v3:
>   -> Cleanup commit message and better describe the problem being
>      resolved
>   -> Remove extraneous hunk
>   -> use SPL_BIN instead of u-boot-spl
> Changes in v2:
>   -> Move spl hex file generation to SPL Makefile
>   -> Create hexfile from $(SPL_BIN).bin which will include the dtb
>      ifneq(build_dtb,)
> ---
>   Makefile             | 8 +++-----
>   scripts/Makefile.spl | 7 +++++++
>   2 files changed, 10 insertions(+), 5 deletions(-)
> 
> diff --git a/Makefile b/Makefile
> index 1d9ade948b..0bc9d1589f 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -1152,11 +1152,6 @@ OBJCOPYFLAGS_u-boot-nodtb.bin := -O binary \
>   		$(if $(CONFIG_X86_16BIT_INIT),-R .start16 -R .resetvec) \
>   		$(if $(CONFIG_MPC85XX_HAVE_RESET_VECTOR),-R .bootpg -R .resetvec)
>   
> -OBJCOPYFLAGS_u-boot-spl.hex = $(OBJCOPYFLAGS_u-boot.hex)
> -
> -spl/u-boot-spl.hex: spl/u-boot-spl FORCE
> -	$(call if_changed,objcopy)
> -
>   binary_size_check: u-boot-nodtb.bin FORCE
>   	@file_size=$(shell wc -c u-boot-nodtb.bin | awk '{print $$1}') ; \
>   	map_size=$(shell cat u-boot.map | \
> @@ -1756,6 +1751,9 @@ spl/u-boot-spl.bin: spl/u-boot-spl
>   	@:
>   	$(SPL_SIZE_CHECK)
>   
> +spl/u-boot-spl.hex: spl/u-boot-spl
> +	@:
> +
>   spl/u-boot-spl: tools prepare \
>   		$(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_SPL_OF_PLATDATA),dts/dt.dtb) \
>   		$(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_TPL_OF_PLATDATA),dts/dt.dtb)
> diff --git a/scripts/Makefile.spl b/scripts/Makefile.spl
> index 7af6b120b6..551002194e 100644
> --- a/scripts/Makefile.spl
> +++ b/scripts/Makefile.spl
> @@ -216,6 +216,8 @@ ifneq ($(CONFIG_TARGET_SOCFPGA_GEN5)$(CONFIG_TARGET_SOCFPGA_ARRIA10),)
>   ALL-y	+= $(obj)/$(SPL_BIN).sfp
>   endif
>   
> +ALL-$(CONFIG_TARGET_SOCFPGA_STRATIX10) += $(obj)/$(SPL_BIN).hex
> +
>   ifdef CONFIG_ARCH_SUNXI
>   ALL-y	+= $(obj)/sunxi-spl.bin
>   
> @@ -363,6 +365,11 @@ endif
>   $(obj)/$(SPL_BIN).sfp: $(obj)/$(SPL_BIN).bin FORCE
>   	$(call if_changed,mkimage)
>   
> +OBJCOPYFLAGS_$(SPL_BIN).hex := -I binary -O ihex --change-address=$(CONFIG_SPL_TEXT_BASE)
> +
> +$(obj)/$(SPL_BIN).hex: $(obj)/$(SPL_BIN).bin FORCE
> +	$(call if_changed,objcopy)
> +

While I like the idea of this patch, and I *think* that this is what an 
SPL hex should look like for all platforms, I'm not 100% sure that 
globally changing the rule and objcopy flags for u-boot-spl.hex is OK 
for all architectures?

Let's try to apply this at the start of next merge window, then we'll 
hopefully see if this does break any board.

Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt at gmail.com>

Regards,
Simon

>   quiet_cmd_mksunxiboot = MKSUNXI $@
>   cmd_mksunxiboot = $(objtree)/tools/mksunxiboot \
>   			--default-dt $(CONFIG_DEFAULT_DEVICE_TREE) $< $@
>