common/spl/spl_sdp.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2016 Toradex
   4  * Author: Stefan Agner <stefan.agner@toradex.com>
   5  */
   6
   7 #include <common.h>
   8 #include <spl.h>
   9 #include <usb.h>
  10 #include <g_dnl.h>
  11 #include <sdp.h>
  12
  13 static int spl_sdp_load_image(struct spl_image_info *spl_image,
  14                               struct spl_boot_device *bootdev)
  15 {
  16         int ret;
  17         const int controller_index = 0;
  18
  19         g_dnl_clear_detach();
  20         ret = g_dnl_register("usb_dnl_sdp");
  21         if (ret) {
  22                 pr_err("SDP dnl register failed: %d\n", ret);
  23                 return ret;
  24         }
  25
  26         ret = sdp_init(controller_index);
  27         if (ret) {
  28                 pr_err("SDP init failed: %d\n", ret);
  29                 return -ENODEV;
  30         }
  31
  32         /*
  33          * This command either loads a legacy image, jumps and never returns,
  34          * or it loads a FIT image and returns it to be handled by the SPL
  35          * code.
  36          */
  37         ret = spl_sdp_handle(controller_index, spl_image);
  38         debug("SDP ended\n");
  39
  40         return ret;
  41 }
  42 SPL_LOAD_IMAGE_METHOD("USB SDP", 0, BOOT_DEVICE_BOARD, spl_sdp_load_image);