cmd/usb_gadget_sdp.c

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