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