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"Das U-Boot" Source Tree
1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Bootdev for USB
4 *
5 * Copyright 2021 Google LLC
6 * Written by Simon Glass <sjg@chromium.org>
7 */
8
9#include <bootdev.h>
10#include <dm.h>
11#include <usb.h>
12
13static int usb_bootdev_bind(struct udevice *dev)
14{
15 struct bootdev_uc_plat *ucp = dev_get_uclass_plat(dev);
16
17 ucp->prio = BOOTDEVP_5_SCAN_SLOW;
18
19 return 0;
20}
21
22static int usb_bootdev_hunt(struct bootdev_hunter *info, bool show)
23{
24 if (usb_started)
25 return 0;
26
27 return usb_init();
28}
29
30struct bootdev_ops usb_bootdev_ops = {
31};
32
33static const struct udevice_id usb_bootdev_ids[] = {
34 { .compatible = "u-boot,bootdev-usb" },
35 { }
36};
37
38U_BOOT_DRIVER(usb_bootdev) = {
39 .name = "usb_bootdev",
40 .id = UCLASS_BOOTDEV,
41 .ops = &usb_bootdev_ops,
42 .bind = usb_bootdev_bind,
43 .of_match = usb_bootdev_ids,
44};
45
46BOOTDEV_HUNTER(usb_bootdev_hunter) = {
47 .prio = BOOTDEVP_5_SCAN_SLOW,
48 .uclass = UCLASS_USB,
49 .hunt = usb_bootdev_hunt,
50 .drv = DM_DRIVER_REF(usb_bootdev),
51};