[U-Boot] [PATCH 03/13] spl: Make image loader infrastructure more universal

[Tom Rini]

On Tue, May 07, 2019 at 12:25:32PM -0500, Andreas Dannenberg wrote:

> The current U-Boot SPL image loader infrastructure is very powerful,
> able to initialize and load from a variety of boot media however it
> is strongly geared towards loading specific types of images in a very
> specific way. To address the need being able to use this infrastructure
> to load arbitrary image files go ahead and refactor it as follows:
> 
> - Refactor existing spl_mmc_load_image function into superset function,
>   accepting additional arguments such as filenames and media load offset
>   (same concept can also be applied toother spl_XXX_load_image functions)
> - Extend the loader function to "remember" their peripheral initialization
>   status so that the init is only done once during the boot process,
> - Extend the FIT image loading function to allow skipping the parsing/
>   processing of the FIT contents (so that this can be done separately
>   in a more customized fashion)
> - Populate the SPL_LOAD_IMAGE_METHOD() list with a trampoline function,
>   invoking the newly refactored superset functions in a way to maintain
>   compatibility with the existing behavior
> 
> This refactoring initially covers MMC/SD card loading (RAW and FS-based).
> 
> Signed-off-by: Andreas Dannenberg <dannenberg at ti.com>

Reviewed-by: Tom Rini <trini at konsulko.com>

-- 
Tom
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