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bootstd: Allow hunting for a bootdev by label

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Add a function to hunt for a bootdev label and find the bootdev produced
by the hunter (or already present).

Add a few extra flags so that we can distinguish between "mmc1", "mmc" and
"1" which all need to be handled differently.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2023-01-17 10:48:09 -07:00 • committed by Tom Rini
parent eacc261178
commit 66e3dce787
6 changed files with 195 additions and 5 deletions
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17
include/bootdev.h
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@ -316,6 +316,23 @@ int bootdev_hunt(const char *spec, bool show);
*/
int bootdev_hunt_prio(enum bootdev_prio_t prio, bool show);
/**
* bootdev_hunt_and_find_by_label() - Hunt for bootdevs by label
*
* Runs the hunter for the label, then tries to find the bootdev, possible
* created by the hunter
*
* @label: Label to look up (e.g. "mmc1" or "mmc0")
* @devp: Returns the bootdev device found, or NULL if none (note it does not
* return the media device, but its bootdev child)
* @method_flagsp: If non-NULL, returns any flags implied by the label
* (enum bootflow_meth_flags_t), 0 if none. Unset if function fails
* Return: 0 if OK, -EINVAL if the uclass is not supported by this board,
* -ENOENT if there is no device with that number
*/
int bootdev_hunt_and_find_by_label(const char *label, struct udevice **devp,
int *method_flagsp);
#if CONFIG_IS_ENABLED(BOOTSTD)
/**
* bootdev_setup_for_dev() - Bind a new bootdev device (deprecated)