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 19static int usb_stor_curr_dev = -1; /* current device */ 20 21int 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_uclass_id(UCLASS_USB, usb_stor_curr_dev); 45 if (!stor_dev) 46 return -ENODEV; 47 48 debug("boot mode - FAT\n"); 49 50#if CONFIG_IS_ENABLED(OS_BOOT) 51 if (spl_start_uboot() || 52 spl_load_image_fat_os(spl_image, bootdev, stor_dev, partition)) 53#endif 54 { 55 err = spl_load_image_fat(spl_image, bootdev, 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 66static 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} 73SPL_LOAD_IMAGE_METHOD("USB", 0, BOOT_DEVICE_USB, spl_usb_load_image); 74