[PATCH] arm: ensure the build doesn't fail when kwbimage lacks the binary blob

[Sascha Hauer]

On Sun, May 12, 2013 at 01:35:53PM +0200, Thomas Petazzoni wrote:
> mach-mvebu images for Armada 370 and Armada XP SoC require a DDR3
> training code which should be extracted from existing bootable images
> for the relevant board. When such binary blob has not been extracted,
> the build of the .kwb and .kwbuart images will fail. This is annoying
> as it makes the build of all Armada 370/XP defconfig fail, which can
> be a problem for automated builds.
> 
> This proposal makes the failure of kwbimage not a fatal failure for
> the build process, and shows a warning. The user therefore sees:
> 
> ====================================================================
>   KWB     barebox.kwb
> Didn't find the file 'plathome-openblocks-ax3-binary.0' in '/home/thomas/projets/barebox' which is mandatory to generate the image
> This file generally contains the DDR3 training code, and should be extracted from an existing bootable
> image for your board. See 'kwbimage -x' to extract it from an existing image.
> Could not create image
> WARNING: Couldn't create KWB image due to previous errors.
>   KWBUART barebox.kwbuart
> Didn't find the file 'plathome-openblocks-ax3-binary.0' in '/home/thomas/projets/barebox' which is mandatory to generate the image
> This file generally contains the DDR3 training code, and should be extracted from an existing bootable
> image for your board. See 'kwbimage -x' to extract it from an existing image.
> Could not create image
> WARNING Couldn't create KWB image due to previous errors.
> ====================================================================
> 
> The only drawback is that barebox-flash-image, which normally points
> to barebox.kwb, becomes a state symbolic link.
> 
> Signed-off-by: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>

Folded this into the original commit and fixed the typo along the way.

Sascha

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