git.sur5r.net Git - u-boot/blob - common/spl/spl_usb.c

   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);