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bootstd: Allow iterating to the next bootdev priortiy

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Add a function which moves to the next priority to be processed.

This works by storing the current priority in the bootflow iterator. The
logic to set this up is included in a subsequent commit.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2023-01-17 10:48:11 -07:00 • committed by Tom Rini
parent e4b694893f
commit 43e89a3069
4 changed files with 165 additions and 0 deletions
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14
include/bootdev.h
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@ -349,6 +349,20 @@ int bootdev_hunt_and_find_by_label(const char *label, struct udevice **devp,
int bootdev_next_label(struct bootflow_iter *iter, struct udevice **devp,
int *method_flagsp);
/**
* bootdev_next_prio() - Find the next bootdev in priority order
*
* This moves @devp to the next bootdev with the current priority. If there is
* none, then it moves to the next priority and scans for new bootdevs there.
*
* @iter: Interation info, containing iter->cur_prio
* @devp: On entry this is the previous bootdev that was considered. On exit
* this is the new bootdev, if any was found
* Returns 0 on success (*devp is updated), -ENODEV if there are no more
* bootdevs at any priority
*/
int bootdev_next_prio(struct bootflow_iter *iter, struct udevice **devp);
#if CONFIG_IS_ENABLED(BOOTSTD)
/**
* bootdev_setup_for_dev() - Bind a new bootdev device (deprecated)