[U-Boot] [PATCH] mksunxi_fit_atf.sh: Allow for this to complete when bl31.bin is missing

[André Przywara]

On 22/05/17 20:40, Tom Rini wrote:
> In situations like an autobuilder we are likely to not have bl31.bin
> present and thus would fail to build and propagate the error upwards.
> Instead, print a big warning to stderr so that human will see that
> something is wrong but complete the build.

Yeah, that sounds like a good idea. Thanks!

To make this even more useful, we should both mention either ATF or "ARM
Trusted firmware" and board/sunxi/README.sunxi64, so that the
users have a clue how to fix it.

> Cc: Andre Przywara <andre.przywara at arm.com>
> Cc: Simon Glass <sjg at chromium.org>
> Cc: Maxime Ripard <maxime.ripard at free-electrons.com>
> Signed-off-by: Tom Rini <trini at konsulko.com>

With those hints above added:
Reviewed-by: Andre Przywara <andre.przywara at arm.com>

Cheers,
Andre.

> ---
>  board/sunxi/mksunxi_fit_atf.sh | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/board/sunxi/mksunxi_fit_atf.sh b/board/sunxi/mksunxi_fit_atf.sh
> index ecea1b839bdf..0deed6eeb14d 100755
> --- a/board/sunxi/mksunxi_fit_atf.sh
> +++ b/board/sunxi/mksunxi_fit_atf.sh
> @@ -7,6 +7,11 @@
>  
>  [ -z "$BL31" ] && BL31="bl31.bin"
>  
> +if [ ! -f $BL31 ]; then
> +	echo "WARNING: BL31 file $BL31 NOT found, resulting binary is non-functional" >&2
> +	BL31=/dev/null
> +fi
> +
>  cat << __HEADER_EOF
>  /dts-v1/;
>  
>