[PATCH v2 2/5] bootstd: Add bootflow_iter_check_mmc() helper

[Julien Masson]

On Thu 13 Jun 2024 at 16:15, Mattijs Korpershoek <mkorpershoek at baylibre.com> wrote:

> Some bootflows might be able to only boot from MMC devices.
> 
> Add a helper function these bootflows can use.
> 
> Reviewed-by: Igor Opaniuk <igor.opaniuk at gmail.com>
> Signed-off-by: Mattijs Korpershoek <mkorpershoek at baylibre.com>
> ---
>  boot/bootflow.c    | 12 ++++++++++++
>  include/bootflow.h |  9 +++++++++
>  2 files changed, 21 insertions(+)
> 
> diff --git a/boot/bootflow.c b/boot/bootflow.c
> index 9aa3179c3881..59d77d2385f4 100644
> --- a/boot/bootflow.c
> +++ b/boot/bootflow.c
> @@ -575,6 +575,18 @@ int bootflow_iter_check_blk(const struct bootflow_iter *iter)
>  	return -ENOTSUPP;
>  }
>  
> +int bootflow_iter_check_mmc(const struct bootflow_iter *iter)
> +{
> +	const struct udevice *media = dev_get_parent(iter->dev);
> +	enum uclass_id id = device_get_uclass_id(media);
> +
> +	log_debug("uclass %d: %s\n", id, uclass_get_name(id));
> +	if (id == UCLASS_MMC)
> +		return 0;
> +
> +	return -ENOTSUPP;
> +}
> +
>  int bootflow_iter_check_sf(const struct bootflow_iter *iter)
>  {
>  	const struct udevice *media = dev_get_parent(iter->dev);
> diff --git a/include/bootflow.h b/include/bootflow.h
> index 080ee8501225..6058ddd89b16 100644
> --- a/include/bootflow.h
> +++ b/include/bootflow.h
> @@ -407,6 +407,15 @@ void bootflow_remove(struct bootflow *bflow);
>   */
>  int bootflow_iter_check_blk(const struct bootflow_iter *iter);
>  
> +/**
> + * bootflow_iter_check_mmc() - Check that a bootflow uses a MMC device
> + *
> + * This checks the bootdev in the bootflow to make sure it uses a mmc device
> + *
> + * Return: 0 if OK, -ENOTSUPP if some other device is used (e.g. ethernet)
> + */
> +int bootflow_iter_check_mmc(const struct bootflow_iter *iter);
> +
>  /**
>   * bootflow_iter_check_sf() - Check that a bootflow uses SPI FLASH
>   *
> 
> -- 
> 2.45.2
> 

Reviewed-by: Julien Masson <jmasson at baylibre.com>
-- 
Julien Masson