[PATCH v4 1/4] boot: Improve comments related to global bootmeths

[Mattijs Korpershoek]

Hi Simon,

Thank you for the patch.

On Thu, Oct 09, 2025 at 03:29, Simon Glass <sjg at chromium.org> wrote:

> Add a few comments about global bootmeths and first_glob_method
>
> Signed-off-by: Simon Glass <sjg at chromium.org>
> Reviewed-by: Heinrich Schuchardt <xypron.glpk at gmx.de>

Reviewed-by: Mattijs Korpershoek <mkorpershoek at kernel.org>

> ---
>
> (no changes since v3)
>
> Changes in v3:
> - Drop the spacing changes
>
>  boot/bootflow.c        | 1 +
>  boot/bootmeth-uclass.c | 1 +
>  include/bootflow.h     | 3 ++-
>  test/boot/bootflow.c   | 2 +-
>  4 files changed, 5 insertions(+), 2 deletions(-)
>
> diff --git a/boot/bootflow.c b/boot/bootflow.c
> index d79f303486d..15df7069209 100644
> --- a/boot/bootflow.c
> +++ b/boot/bootflow.c
> @@ -344,6 +344,7 @@ static int bootflow_check(struct bootflow_iter *iter, struct bootflow *bflow)
>  	struct udevice *dev;
>  	int ret;
>  
> +	/* handle global bootmeths if needed */
>  	if (IS_ENABLED(CONFIG_BOOTMETH_GLOBAL) && iter->doing_global) {
>  		bootflow_iter_set_dev(iter, NULL, 0);
>  		ret = bootmeth_get_bootflow(iter->method, bflow);
> diff --git a/boot/bootmeth-uclass.c b/boot/bootmeth-uclass.c
> index 188f6ea1895..bb2dd8447cf 100644
> --- a/boot/bootmeth-uclass.c
> +++ b/boot/bootmeth-uclass.c
> @@ -204,6 +204,7 @@ int bootmeth_setup_iter_order(struct bootflow_iter *iter, bool include_global)
>  		goto err_order;
>  	}
>  
> +	/* start with the global bootmeths */
>  	if (IS_ENABLED(CONFIG_BOOTMETH_GLOBAL) && include_global &&
>  	    iter->first_glob_method != -1 && iter->first_glob_method != count) {
>  		iter->cur_method = iter->first_glob_method;
> diff --git a/include/bootflow.h b/include/bootflow.h
> index 32422067723..2ef6eb25cf5 100644
> --- a/include/bootflow.h
> +++ b/include/bootflow.h
> @@ -250,7 +250,8 @@ enum bootflow_meth_flags_t {
>   * @cur_label: Current label being processed
>   * @num_methods: Number of bootmeth devices in @method_order
>   * @cur_method: Current method number, an index into @method_order
> - * @first_glob_method: First global method, if any, else -1
> + * @first_glob_method: Index of first global method within @method_order[], if
> + * any, else -1
>   * @cur_prio: Current priority being scanned
>   * @method_order: List of bootmeth devices to use, in order. The normal methods
>   *	appear first, then the global ones, if any
> diff --git a/test/boot/bootflow.c b/test/boot/bootflow.c
> index 8de5a310add..7cd83dc7443 100644
> --- a/test/boot/bootflow.c
> +++ b/test/boot/bootflow.c
> @@ -401,7 +401,7 @@ static int bootflow_system(struct unit_test_state *uts)
>  	ut_assertok(device_probe(dev));
>  	sandbox_set_fake_efi_mgr_dev(dev, true);
>  
> -	/* We should get a single 'bootmgr' method right at the end */
> +	/* We should get a single 'bootmgr' method at the start */
>  	bootstd_clear_glob();
>  	ut_assertok(run_command("bootflow scan -lH", 0));
>  	ut_assert_skip_to_line(
> -- 
> 2.43.0