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 static int spl_usb_load_image(struct spl_image_info *spl_image, 26 struct spl_boot_device *bootdev) 27 { 28 int err; 29 struct blk_desc *stor_dev; 30 31 usb_stop(); 32 err = usb_init(); 33 if (err) { 34 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT 35 printf("%s: usb init failed: err - %d\n", __func__, err); 36 #endif 37 return err; 38 } 39 40 #ifdef CONFIG_USB_STORAGE 41 /* try to recognize storage devices immediately */ 42 usb_stor_curr_dev = usb_stor_scan(1); 43 stor_dev = blk_get_devnum_by_type(IF_TYPE_USB, usb_stor_curr_dev); 44 if (!stor_dev) 45 return -ENODEV; 46 #endif 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, 53 CONFIG_SYS_USB_FAT_BOOT_PARTITION)) 54 #endif 55 { 56 err = spl_load_image_fat(spl_image, stor_dev, 57 CONFIG_SYS_USB_FAT_BOOT_PARTITION, 58 CONFIG_SPL_FS_LOAD_PAYLOAD_NAME); 59 } 60 61 if (err) { 62 puts("Error loading from USB device\n"); 63 return err; 64 } 65 66 return 0; 67 } 68 SPL_LOAD_IMAGE_METHOD("USB", 0, BOOT_DEVICE_USB, spl_usb_load_image); 69