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 <log.h>
13 #include <spl.h>
14 #include <asm/u-boot.h>
15 #include <errno.h>
16 #include <usb.h>
17 #include <fat.h>
18
19 static int usb_stor_curr_dev = -1; /* current device */
20
spl_usb_load(struct spl_image_info * spl_image,struct spl_boot_device * bootdev,int partition,const char * filename)21 int spl_usb_load(struct spl_image_info *spl_image,
22 struct spl_boot_device *bootdev, int partition,
23 const char *filename)
24 {
25 int err = 0;
26 struct blk_desc *stor_dev;
27 static bool usb_init_pending = true;
28
29 if (usb_init_pending) {
30 usb_stop();
31 err = usb_init();
32 usb_init_pending = false;
33 }
34
35 if (err) {
36 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
37 printf("%s: usb init failed: err - %d\n", __func__, err);
38 #endif
39 return err;
40 }
41
42 /* try to recognize storage devices immediately */
43 usb_stor_curr_dev = usb_stor_scan(1);
44 stor_dev = blk_get_devnum_by_type(IF_TYPE_USB, usb_stor_curr_dev);
45 if (!stor_dev)
46 return -ENODEV;
47
48 debug("boot mode - FAT\n");
49
50 #ifdef CONFIG_SPL_OS_BOOT
51 if (spl_start_uboot() ||
52 spl_load_image_fat_os(spl_image, stor_dev, partition))
53 #endif
54 {
55 err = spl_load_image_fat(spl_image, stor_dev, partition, filename);
56 }
57
58 if (err) {
59 puts("Error loading from USB device\n");
60 return err;
61 }
62
63 return 0;
64 }
65
spl_usb_load_image(struct spl_image_info * spl_image,struct spl_boot_device * bootdev)66 static int spl_usb_load_image(struct spl_image_info *spl_image,
67 struct spl_boot_device *bootdev)
68 {
69 return spl_usb_load(spl_image, bootdev,
70 CONFIG_SYS_USB_FAT_BOOT_PARTITION,
71 CONFIG_SPL_FS_LOAD_PAYLOAD_NAME);
72 }
73 SPL_LOAD_IMAGE_METHOD("USB", 0, BOOT_DEVICE_USB, spl_usb_load_image);
74