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 #ifdef CONFIG_USB_STORAGE 19 static int usb_stor_curr_dev = -1; /* current device */ 20 #endif 21 22 static int spl_usb_load_image(struct spl_image_info *spl_image, 23 struct spl_boot_device *bootdev) 24 { 25 int err; 26 struct blk_desc *stor_dev; 27 28 usb_stop(); 29 err = usb_init(); 30 if (err) { 31 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT 32 printf("%s: usb init failed: err - %d\n", __func__, err); 33 #endif 34 return err; 35 } 36 37 #ifdef CONFIG_USB_STORAGE 38 /* try to recognize storage devices immediately */ 39 usb_stor_curr_dev = usb_stor_scan(1); 40 stor_dev = blk_get_devnum_by_type(IF_TYPE_USB, usb_stor_curr_dev); 41 if (!stor_dev) 42 return -ENODEV; 43 #endif 44 45 debug("boot mode - FAT\n"); 46 47 #ifdef CONFIG_SPL_OS_BOOT 48 if (spl_start_uboot() || 49 spl_load_image_fat_os(spl_image, stor_dev, 50 CONFIG_SYS_USB_FAT_BOOT_PARTITION)) 51 #endif 52 { 53 err = spl_load_image_fat(spl_image, stor_dev, 54 CONFIG_SYS_USB_FAT_BOOT_PARTITION, 55 CONFIG_SPL_FS_LOAD_PAYLOAD_NAME); 56 } 57 58 if (err) { 59 puts("Error loading from USB device\n"); 60 return err; 61 } 62 63 return 0; 64 } 65 SPL_LOAD_IMAGE_METHOD("USB", 0, BOOT_DEVICE_USB, spl_usb_load_image); 66