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 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