1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * (C) Copyright 2014
3*4882a593Smuzhiyun * Texas Instruments, <www.ti.com>
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Dan Murphy <dmurphy@ti.com>
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
8*4882a593Smuzhiyun *
9*4882a593Smuzhiyun * Derived work from spl_mmc.c
10*4882a593Smuzhiyun */
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun #include <common.h>
13*4882a593Smuzhiyun #include <spl.h>
14*4882a593Smuzhiyun #include <asm/u-boot.h>
15*4882a593Smuzhiyun #include <errno.h>
16*4882a593Smuzhiyun #include <usb.h>
17*4882a593Smuzhiyun #include <fat.h>
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun DECLARE_GLOBAL_DATA_PTR;
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun #ifdef CONFIG_USB_STORAGE
22*4882a593Smuzhiyun static int usb_stor_curr_dev = -1; /* current device */
23*4882a593Smuzhiyun #endif
24*4882a593Smuzhiyun
spl_usb_load_image(struct spl_image_info * spl_image,struct spl_boot_device * bootdev)25*4882a593Smuzhiyun static int spl_usb_load_image(struct spl_image_info *spl_image,
26*4882a593Smuzhiyun struct spl_boot_device *bootdev)
27*4882a593Smuzhiyun {
28*4882a593Smuzhiyun int err;
29*4882a593Smuzhiyun struct blk_desc *stor_dev;
30*4882a593Smuzhiyun
31*4882a593Smuzhiyun usb_stop();
32*4882a593Smuzhiyun err = usb_init();
33*4882a593Smuzhiyun if (err) {
34*4882a593Smuzhiyun #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
35*4882a593Smuzhiyun printf("%s: usb init failed: err - %d\n", __func__, err);
36*4882a593Smuzhiyun #endif
37*4882a593Smuzhiyun return err;
38*4882a593Smuzhiyun }
39*4882a593Smuzhiyun
40*4882a593Smuzhiyun #ifdef CONFIG_USB_STORAGE
41*4882a593Smuzhiyun /* try to recognize storage devices immediately */
42*4882a593Smuzhiyun usb_stor_curr_dev = usb_stor_scan(1);
43*4882a593Smuzhiyun stor_dev = blk_get_devnum_by_type(IF_TYPE_USB, usb_stor_curr_dev);
44*4882a593Smuzhiyun if (!stor_dev)
45*4882a593Smuzhiyun return -ENODEV;
46*4882a593Smuzhiyun #endif
47*4882a593Smuzhiyun
48*4882a593Smuzhiyun debug("boot mode - FAT\n");
49*4882a593Smuzhiyun
50*4882a593Smuzhiyun #ifdef CONFIG_SPL_OS_BOOT
51*4882a593Smuzhiyun if (spl_start_uboot() ||
52*4882a593Smuzhiyun spl_load_image_fat_os(spl_image, stor_dev,
53*4882a593Smuzhiyun CONFIG_SYS_USB_FAT_BOOT_PARTITION))
54*4882a593Smuzhiyun #endif
55*4882a593Smuzhiyun {
56*4882a593Smuzhiyun err = spl_load_image_fat(spl_image, stor_dev,
57*4882a593Smuzhiyun CONFIG_SYS_USB_FAT_BOOT_PARTITION,
58*4882a593Smuzhiyun CONFIG_SPL_FS_LOAD_PAYLOAD_NAME);
59*4882a593Smuzhiyun }
60*4882a593Smuzhiyun
61*4882a593Smuzhiyun if (err) {
62*4882a593Smuzhiyun puts("Error loading from USB device\n");
63*4882a593Smuzhiyun return err;
64*4882a593Smuzhiyun }
65*4882a593Smuzhiyun
66*4882a593Smuzhiyun return 0;
67*4882a593Smuzhiyun }
68*4882a593Smuzhiyun SPL_LOAD_IMAGE_METHOD("USB", 0, BOOT_DEVICE_USB, spl_usb_load_image);
69