[Buildroot] [PATCH 1/2] boot/uboot: add support for i.MX28 SD format
Arnout Vandecappelle
arnout at mind.be
Sun Mar 22 13:02:29 UTC 2015
On 18/03/15 19:06, Vincent Stehlé wrote:
> 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.
>
> Signed-off-by: Vincent Stehlé <vincent.stehle at freescale.com>
> ---
> boot/uboot/Config.in | 12 ++++++++++++
> boot/uboot/uboot.mk | 5 +++++
> 2 files changed, 17 insertions(+)
>
> diff --git a/boot/uboot/Config.in b/boot/uboot/Config.in
> index 03e6acc..cea993a 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 from an
Lines should wrap at 72 columns.
> + SD card.
> +
> + U-boot includes an mxsboot tool to generate this format, starting
> + from v2011.12.
U-Boot doesn't use v in its version specifiers.
> +
> + See doc/README.mxs.
Before 2013.07, it was called README.mx28_common
Before 2014.01, you needed elftosb to generate the BootStream image.
Unfortunately we can't automatically add that dependency because we can't detect
the U-Boot version. So, add this dependency unconditionally like is done for the
SB format.
> +
> 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..8fad5b4 100644
> --- a/boot/uboot/uboot.mk
> +++ b/boot/uboot/uboot.mk
> @@ -49,6 +49,9 @@ 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)
> +UBOOT_BIN = u-boot.sd
> +UBOOT_MAKE_TARGET = u-boot.sb
Since sb and sd are visually so similar, I think it's worthwhile to add a small
comment here to say which is which. E.g.
# BootStream (.sb) file is built by U-Boot, we convert it to SD file
I'll send an updated series with these changes.
Regards,
Arnout
> else ifeq ($(BR2_TARGET_UBOOT_FORMAT_CUSTOM),y)
> UBOOT_BIN = $(call qstrip,$(BR2_TARGET_UBOOT_FORMAT_CUSTOM_NAME))
> else
> @@ -116,6 +119,8 @@ 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
>
--
Arnout Vandecappelle arnout at mind be
Senior Embedded Software Architect +32-16-286500
Essensium/Mind http://www.mind.be
G.Geenslaan 9, 3001 Leuven, Belgium BE 872 984 063 RPR Leuven
LinkedIn profile: http://www.linkedin.com/in/arnoutvandecappelle
GPG fingerprint: 7CB5 E4CC 6C2E EFD4 6E3D A754 F963 ECAB 2450 2F1F
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