mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-22 11:13:07 +00:00
b8aa463e9b
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>
62 lines
1.2 KiB
C
62 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Bootdevice for MMC
|
|
*
|
|
* Copyright 2021 Google LLC
|
|
* Written by Simon Glass <sjg@chromium.org>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <bootdev.h>
|
|
#include <dm.h>
|
|
#include <mmc.h>
|
|
|
|
static int mmc_get_bootflow(struct udevice *dev, struct bootflow_iter *iter,
|
|
struct bootflow *bflow)
|
|
{
|
|
struct udevice *mmc_dev = dev_get_parent(dev);
|
|
struct udevice *blk;
|
|
int ret;
|
|
|
|
ret = mmc_get_blk(mmc_dev, &blk);
|
|
/*
|
|
* If there is no media, indicate that no more partitions should be
|
|
* checked
|
|
*/
|
|
if (ret == -EOPNOTSUPP)
|
|
ret = -ESHUTDOWN;
|
|
if (ret)
|
|
return log_msg_ret("blk", ret);
|
|
assert(blk);
|
|
ret = bootdev_find_in_blk(dev, blk, iter, bflow);
|
|
if (ret)
|
|
return log_msg_ret("find", ret);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mmc_bootdev_bind(struct udevice *dev)
|
|
{
|
|
struct bootdev_uc_plat *ucp = dev_get_uclass_plat(dev);
|
|
|
|
ucp->prio = BOOTDEVP_0_INTERNAL_FAST;
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct bootdev_ops mmc_bootdev_ops = {
|
|
.get_bootflow = mmc_get_bootflow,
|
|
};
|
|
|
|
static const struct udevice_id mmc_bootdev_ids[] = {
|
|
{ .compatible = "u-boot,bootdev-mmc" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(mmc_bootdev) = {
|
|
.name = "mmc_bootdev",
|
|
.id = UCLASS_BOOTDEV,
|
|
.ops = &mmc_bootdev_ops,
|
|
.bind = mmc_bootdev_bind,
|
|
.of_match = mmc_bootdev_ids,
|
|
};
|