1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2014
4 * Texas Instruments, <www.ti.com>
5 *
6 * Dan Murphy <dmurphy@ti.com>
7 *
8 * Derived work from spl_mmc.c
9 */
10
11 #include <common.h>
12 #include <spl.h>
13 #include <asm/u-boot.h>
14 #include <errno.h>
15 #include <usb.h>
16 #include <fat.h>
17
18 #ifdef CONFIG_USB_STORAGE
19 static int usb_stor_curr_dev = -1; /* current device */
20 #endif
21
spl_usb_load_image(struct spl_image_info * spl_image,struct spl_boot_device * bootdev)22 static int spl_usb_load_image(struct spl_image_info *spl_image,
23 struct spl_boot_device *bootdev)
24 {
25 int err;
26 struct blk_desc *stor_dev;
27
28 usb_stop();
29 err = usb_init();
30 if (err) {
31 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
32 printf("%s: usb init failed: err - %d\n", __func__, err);
33 #endif
34 return err;
35 }
36
37 #ifdef CONFIG_USB_STORAGE
38 /* try to recognize storage devices immediately */
39 usb_stor_curr_dev = usb_stor_scan(1);
40 stor_dev = blk_get_devnum_by_type(IF_TYPE_USB, usb_stor_curr_dev);
41 if (!stor_dev)
42 return -ENODEV;
43 #endif
44
45 debug("boot mode - FAT\n");
46
47 #ifdef CONFIG_SPL_OS_BOOT
48 if (spl_start_uboot() ||
49 spl_load_image_fat_os(spl_image, stor_dev,
50 CONFIG_SYS_USB_FAT_BOOT_PARTITION))
51 #endif
52 {
53 err = spl_load_image_fat(spl_image, stor_dev,
54 CONFIG_SYS_USB_FAT_BOOT_PARTITION,
55 CONFIG_SPL_FS_LOAD_PAYLOAD_NAME);
56 }
57
58 if (err) {
59 puts("Error loading from USB device\n");
60 return err;
61 }
62
63 return 0;
64 }
65 SPL_LOAD_IMAGE_METHOD("USB", 0, BOOT_DEVICE_USB, spl_usb_load_image);
66