[Buildroot] [PATCH v2 1/2] boot/uboot: add support for i.MX28 SD format

Jörg Krause joerg.krause at embedded.rocks
Sun Mar 22 21:02:43 UTC 2015


Hi Arnout,

On So, 2015-03-22 at 14:25 +0100, Arnout Vandecappelle (Essensium/Mind)
wrote:
> From: Vincent Stehlé <vincent.stehle at freescale.com>
> 
> Allow to generate u-boot.sd, Freescale i.MX28 SB format with a header for
> booting from an SD card.
> 
> U-boot includes an mxsboot tool to generate this format, starting from
> v2011.12.
> 
> See u-boot doc/README.mxs (or doc/README.mx28_common before 2013.07).
> 
> [Arnout:
>  - Wrap Config.in help text at 72 columns.
>  - Remove v from U-Boot version specifier.
>  - Refer to different README name before 2013.07.
>  - Depend on host-elftosb

host-elftosb is not necessary anymore. BootStream support has been
merged upstream and it's not necessary to convert the u-boot binary with
elftosb. This should be removed for u-boot.sb make target as well. 

>  - Add comment to clarify sb -> sd conversion.]
> 
> Signed-off-by: Vincent Stehlé <vincent.stehle at freescale.com>
> Tested-by: Jörg Krause <joerg.krause at embedded.rocks>
> Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout at mind.be>
> Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout at mind.be>
> ---
>  boot/uboot/Config.in | 12 ++++++++++++
>  boot/uboot/uboot.mk  |  7 +++++++
>  2 files changed, 19 insertions(+)
> 
> diff --git a/boot/uboot/Config.in b/boot/uboot/Config.in
> index 03e6acc..3f39ee8 100644
> --- a/boot/uboot/Config.in
> +++ b/boot/uboot/Config.in
> @@ -117,6 +117,18 @@ config BR2_TARGET_UBOOT_FORMAT_SB
>  	depends on BR2_arm
>  	bool "u-boot.sb"
>  
> +config BR2_TARGET_UBOOT_FORMAT_SD
> +	depends on BR2_arm
> +	bool "u-boot.sd"
> +	help
> +	  This is Freescale i.MX28 SB format, with a header for booting

i.MX28 BootStream (.sb) format

> +	  from an SD card.
> +
> +	  U-boot includes an mxsboot tool to generate this format,
> +	  starting from 2011.12.
> +
> +	  See doc/README.mxs (or doc/README.mx28_common before 2013.07)
> +
>  config BR2_TARGET_UBOOT_FORMAT_CUSTOM
>  	bool "Custom (specify below)"
>  	help
> diff --git a/boot/uboot/uboot.mk b/boot/uboot/uboot.mk
> index a9ba054..630619a 100644
> --- a/boot/uboot/uboot.mk
> +++ b/boot/uboot/uboot.mk
> @@ -49,6 +49,11 @@ else ifeq ($(BR2_TARGET_UBOOT_FORMAT_SB),y)
>  UBOOT_BIN = u-boot.sb
>  UBOOT_MAKE_TARGET = $(UBOOT_BIN)
>  UBOOT_DEPENDENCIES += host-elftosb
> +else ifeq ($(BR2_TARGET_UBOOT_FORMAT_SD),y)
> +# BootStream (.sb) is generated by U-Boot, we convert it to SD format
> +UBOOT_BIN = u-boot.sd
> +UBOOT_MAKE_TARGET = u-boot.sb
> +UBOOT_DEPENDENCIES += host-elftosb
>  else ifeq ($(BR2_TARGET_UBOOT_FORMAT_CUSTOM),y)
>  UBOOT_BIN = $(call qstrip,$(BR2_TARGET_UBOOT_FORMAT_CUSTOM_NAME))
>  else
> @@ -116,6 +121,8 @@ define UBOOT_BUILD_CMDS
>  	$(TARGET_CONFIGURE_OPTS) 	\
>  		$(MAKE) -C $(@D) $(UBOOT_MAKE_OPTS) 		\
>  		$(UBOOT_MAKE_TARGET)
> +	$(if $(BR2_TARGET_UBOOT_FORMAT_SD),
> +		$(@D)/tools/mxsboot sd $(@D)/u-boot.sb $(@D)/u-boot.sd)
>  endef
>  
>  define UBOOT_BUILD_OMAP_IFT

Best regards
Jörg




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