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bootstd: mmc: Add a bootdev driver

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Add a bootdev driver for MMC. It mostly just calls the bootdev helper
function.

Add a function to obtain the block device for an MMC controller.

Fix up the comment for mmc_get_blk_desc() while we are here.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2022-04-24 23:31:14 -06:00 • committed by Tom Rini
parent 31aefaf89a
commit b8aa463e9b
5 changed files with 102 additions and 1 deletions
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12
include/mmc.h
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@ -956,10 +956,20 @@ int mmc_get_env_dev(void);
* mmc_get_blk_desc() - Get the block descriptor for an MMC device
*
* @mmc: MMC device
* Return: block device if found, else NULL
* Return: block descriptor if found, else NULL
*/
struct blk_desc *mmc_get_blk_desc(struct mmc *mmc);
/**
* mmc_get_blk() - Get the block device for an MMC device
*
* @dev: MMC device
* @blkp: Returns pointer to probed block device on sucesss
*
* Return: 0 on success, -ve on error
*/
int mmc_get_blk(struct udevice *dev, struct udevice **blkp);
/**
* mmc_send_ext_csd() - read the extended CSD register
*