[Buildroot] [PATCH 1/1] Fix Image name not configurable (issue #28).

[Thomas Petazzoni]

Dear Mauro Condarelli,

On Sat, 29 Aug 2015 18:28:41 +0200, Mauro Condarelli wrote:
> Yann, All,
> 
> After the previous discussion on IRC I came up with this very different patch which does not touch the upstream package at all (even though I still think allowing user to chose isn't evil).
> Before I try to submit it I would like a comment.
> The aim is to force the booted image name according to requested kernel target if (and only if) user contextually requests the image to be installed.
> Obvious downside is user has no feedback of the change (and I don't know how to provide this feedback).
> Would this be more acceptable?
> 
> diff --git a/boot/at91bootstrap3/at91bootstrap3.mk b/boot/at91bootstrap3/at91bootstrap3.mk
> index fa67ea6..ccb5e95 100644
> --- a/boot/at91bootstrap3/at91bootstrap3.mk
> +++ b/boot/at91bootstrap3/at91bootstrap3.mk
> @@ -40,6 +40,23 @@ define AT91BOOTSTRAP3_INSTALL_IMAGES_CMDS
>          cp $(@D)/binaries/*.bin $(BINARIES_DIR)
>   endef
> +ifeq ($(BR2_LINUX_KERNEL_INSTALL_TARGET),y)
> +define AT91BOOTSTRAP3_KCONFIG_FIXUP_CMDS
> +       $(if $(BR2_LINUX_KERNEL_UIMAGE),
> +               $(call KCONFIG_SET_OPT,CONFIG_IMAGE_NAME,"uImage",$(@D)/.config))
> +       $(if $(BR2_LINUX_KERNEL_APPENDED_UIMAGE),
> +               $(call KCONFIG_SET_OPT,CONFIG_IMAGE_NAME,"uImage",$(@D)/.config))
> +       $(if $(BR2_LINUX_KERNEL_ZIMAGE),
> +               $(call KCONFIG_SET_OPT,CONFIG_IMAGE_NAME,"zImage",$(@D)/.config))
> +       $(if $(BR2_LINUX_KERNEL_APPENDED_ZIMAGE),
> +               $(call KCONFIG_SET_OPT,CONFIG_IMAGE_NAME,"zImage",$(@D)/.config))
> +       $(if $(BR2_LINUX_KERNEL_VMLINUX),
> +               $(call KCONFIG_SET_OPT,CONFIG_IMAGE_NAME,"vmlinux",$(@D)/.config))
> +       $(if $(BR2_LINUX_KERNEL_IMAGE_TARGET_CUSTOM),
> +               $(call KCONFIG_SET_OPT,CONFIG_IMAGE_NAME,$(BR2_LINUX_KERNEL_IMAGE_NAME),$(@D)/.config))
> +endef
> +endif

I think this is not correct because it assumes you want to boot the
Linux kernel directly from ATBootstrap, while many people usually do
AT91Bootstrap -> another bootloader (U-Boot or Barebox) -> Linux kernel.

Best regards,

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com