[PATCH 1/4] env: remove callback.o for an SPL build

[Tom Rini]

On Thu, Feb 27, 2020 at 01:56:10PM +0000, Rasmus Villemoes wrote:

> env.h says this about about callback declarations (U_BOOT_ENV_CALLBACK):
> 
>  * For SPL these are silently dropped to reduce code size, since environment
>  * callbacks are not supported with SPL.
> 
> So env_callback_init() does a lot of work to not find anything in the
> guaranteed empty env_clbk list. Drop callback.o entirely from the link
> and stub out the only public function defined in callback.o. This cuts
> about 600 bytes from the SPL on my ppc build.
> 
> Signed-off-by: Rasmus Villemoes <rasmus.villemoes at prevas.dk>
> Reviewed-by: Simon Glass <sjg at chromium.org>

Applied to u-boot/master, thanks!

-- 
Tom
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