cmd/usb_gadget_sdp.c

   1 /*
   2  * cmd_sdp.c -- sdp command
   3  *
   4  * Copyright (C) 2016 Toradex
   5  * Author: Stefan Agner <stefan.agner@toradex.com>
   6  *
   7  * SPDX-License-Identifier:     GPL-2.0+
   8  */
   9
  10 #include <common.h>
  11 #include <g_dnl.h>
  12 #include <sdp.h>
  13 #include <usb.h>
  14
  15 static int do_sdp(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  16 {
  17         int ret = CMD_RET_FAILURE;
  18
  19         if (argc < 2)
  20                 return CMD_RET_USAGE;
  21
  22         char *usb_controller = argv[1];
  23         int controller_index = simple_strtoul(usb_controller, NULL, 0);
  24         board_usb_init(controller_index, USB_INIT_DEVICE);
  25
  26         g_dnl_clear_detach();
  27         g_dnl_register("usb_dnl_sdp");
  28
  29         ret = sdp_init(controller_index);
  30         if (ret) {
  31                 pr_err("SDP init failed: %d", ret);
  32                 goto exit;
  33         }
  34
  35         /* This command typically does not return but jumps to an image */
  36         sdp_handle(controller_index);
  37         pr_err("SDP ended");
  38
  39 exit:
  40         g_dnl_unregister();
  41         board_usb_cleanup(controller_index, USB_INIT_DEVICE);
  42
  43         return ret;
  44 }
  45
  46 U_BOOT_CMD(sdp, 2, 1, do_sdp,
  47         "Serial Downloader Protocol",
  48         "<USB_controller>\n"
  49         "  - serial downloader protocol via <USB_controller>\n"
  50 );