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 static int usb_stor_curr_dev = -1; /* current device */
19
spl_usb_load_image(struct spl_image_info * spl_image,struct spl_boot_device * bootdev)20 static int spl_usb_load_image(struct spl_image_info *spl_image,
21 struct spl_boot_device *bootdev)
22 {
23 int err;
24 struct blk_desc *stor_dev;
25
26 usb_stop();
27 err = usb_init();
28 if (err) {
29 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
30 printf("%s: usb init failed: err - %d\n", __func__, err);
31 #endif
32 return err;
33 }
34
35 /* try to recognize storage devices immediately */
36 usb_stor_curr_dev = usb_stor_scan(1);
37 stor_dev = blk_get_devnum_by_type(IF_TYPE_USB, usb_stor_curr_dev);
38 if (!stor_dev)
39 return -ENODEV;
40
41 debug("boot mode - FAT\n");
42
43 #ifdef CONFIG_SPL_OS_BOOT
44 if (spl_start_uboot() ||
45 spl_load_image_fat_os(spl_image, stor_dev,
46 CONFIG_SYS_USB_FAT_BOOT_PARTITION))
47 #endif
48 {
49 err = spl_load_image_fat(spl_image, stor_dev,
50 CONFIG_SYS_USB_FAT_BOOT_PARTITION,
51 CONFIG_SPL_FS_LOAD_PAYLOAD_NAME);
52 }
53
54 if (err) {
55 puts("Error loading from USB device\n");
56 return err;
57 }
58
59 return 0;
60 }
61 SPL_LOAD_IMAGE_METHOD("USB", 0, BOOT_DEVICE_USB, spl_usb_load_image);
62