mirror of
https://github.com/AsahiLinux/u-boot
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62 lines
1.2 KiB
C
62 lines
1.2 KiB
C
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* Bootdevice for USB
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*
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* Copyright 2021 Google LLC
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* Written by Simon Glass <sjg@chromium.org>
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*/
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#include <common.h>
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#include <bootdev.h>
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#include <dm.h>
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#include <usb.h>
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static int usb_get_bootflow(struct udevice *dev, struct bootflow_iter *iter,
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struct bootflow *bflow)
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{
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struct udevice *blk;
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int ret;
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ret = bootdev_get_sibling_blk(dev, &blk);
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/*
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* If there is no media, indicate that no more partitions should be
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* checked
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*/
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if (ret == -EOPNOTSUPP)
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ret = -ESHUTDOWN;
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if (ret)
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return log_msg_ret("blk", ret);
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assert(blk);
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ret = bootdev_find_in_blk(dev, blk, iter, bflow);
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if (ret)
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return log_msg_ret("find", ret);
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return 0;
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}
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static int usb_bootdev_bind(struct udevice *dev)
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{
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struct bootdev_uc_plat *ucp = dev_get_uclass_plat(dev);
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ucp->prio = BOOTDEVP_3_SCAN_SLOW;
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return 0;
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}
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struct bootdev_ops usb_bootdev_ops = {
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.get_bootflow = usb_get_bootflow,
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};
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static const struct udevice_id usb_bootdev_ids[] = {
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{ .compatible = "u-boot,bootdev-usb" },
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{ }
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};
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U_BOOT_DRIVER(usb_bootdev) = {
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.name = "usb_bootdev",
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.id = UCLASS_BOOTDEV,
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.ops = &usb_bootdev_ops,
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.bind = usb_bootdev_bind,
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.of_match = usb_bootdev_ids,
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};
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