[PATCH 6/7] Kconfig: Document the limitations of the simple SPL_LOAD_FIT path

[Simon Glass]

Hi Alexandru,

On Thu, 11 Mar 2021 at 07:04, Alexandru Gagniuc <mr.nuke.me at gmail.com> wrote:
>
> The "simple" SPL_LOAD_FIT path is the most compliant with the format
> documented in doc/uImage.FIT/source_file_format.txt. The other two
> paths to load a FIT are SPL_LOAD_FIT_FULL and the "bootm" command.
>
> Since the Kconfig menu is the most likely place for a new user to see
> these options, it seems like the most logical candidate to document
> the limitations. This documents the _know_ issues, and is not intended

known

> to be a complete list of all follies.
>
> Signed-off-by: Alexandru Gagniuc <mr.nuke.me at gmail.com>
> ---
>  common/Kconfig.boot | 10 ++++++++++
>  1 file changed, 10 insertions(+)

Reviewed-by: Simon Glass <sjg at chromium.org>

>
> diff --git a/common/Kconfig.boot b/common/Kconfig.boot
> index 9c335f4f8c..f77e59a22a 100644
> --- a/common/Kconfig.boot
> +++ b/common/Kconfig.boot
> @@ -202,6 +202,16 @@ config SPL_LOAD_FIT
>           particular it can handle selecting from multiple device tree
>           and passing the correct one to U-Boot.
>
> +         This path has the following limitations:
> +
> +         1. "loadables" images, other than FTDs, which do not have a "load"

property

> +            will not be loaded. This limitation also applies to FPGA images
> +            with the correct "compatible" string.
> +         2. For FPGA images, only the "compatible" = "u-boot,fpga-legacy"
> +            loading method is supported.
> +         3. FDTs are only loaded for images with an "os" property of "u-boot".
> +            "linux" images are also supported with Falcon boot mode.
> +
>  config SPL_LOAD_FIT_ADDRESS
>         hex "load address of fit image"
>         depends on SPL_LOAD_FIT
> --
> 2.26.2
>

Regards,
Simon