[Buildroot] [PATCH 14/46] u-boot: support building for mkimage

[Thomas Petazzoni <thomas.petazzoni@free-electrons.com>]

On Tue, 08 Jun 2010 23:45:58 +0200
Peter Korsgaard <jacmet@uclibc.org> wrote:

>  Thomas>  U_BOOT_VERSION:=$(call qstrip,$(BR2_UBOOT_VERSION))
>  Thomas> +U_BOOT_BOARD_NAME:=$(call
>  Thomas> qstrip,$(BR2_TARGET_UBOOT_BOARDNAME)) +
>  Thomas> +# An U-Boot version and board might not be specified if
>  Thomas> U-Boot isn't +# explicitly selected, but mkimage needs to be
>  Thomas> compiled. In this case, +# we just take a random U-Boot
>  Thomas> version and configuration. +ifeq ($(U_BOOT_VERSION),)
>  Thomas> +U_BOOT_VERSION=2010.03
>  Thomas> +U_BOOT_BOARD_NAME=smdk2410
>  Thomas> +endif
>   
>  Thomas>  # u-boot still uses arch=ppc for powerpc
>  Thomas>  U_BOOT_ARCH=$(KERNEL_ARCH:powerpc=ppc)
>  
> Does that work if KERNEL_ARCH != arm?

Yes, it was. But I looked more closely at this and discovered that it
was possible to build mkimage *without* configuring U-Boot. I've taken
advantage of this to not configure U-Boot with a fake board.

> Huh, isn't that supposed to be mkimage for the host? Why do you need
> to pass all this target stuff?

I've removed this and simplified the build of mkimage for the host.

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com