usb_gadget_sdp.c 1.1 KB

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  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. #include <common.h>
  9. #include <g_dnl.h>
  10. #include <sdp.h>
  11. #include <usb.h>
  12. static int do_sdp(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  13. {
  14. int ret;
  15. if (argc < 2)
  16. return CMD_RET_USAGE;
  17. char *usb_controller = argv[1];
  18. int controller_index = simple_strtoul(usb_controller, NULL, 0);
  19. usb_gadget_initialize(controller_index);
  20. g_dnl_clear_detach();
  21. ret = g_dnl_register("usb_dnl_sdp");
  22. if (ret) {
  23. pr_err("SDP dnl register failed: %d\n", ret);
  24. goto exit_register;
  25. }
  26. ret = sdp_init(controller_index);
  27. if (ret) {
  28. pr_err("SDP init failed: %d\n", ret);
  29. goto exit;
  30. }
  31. /* This command typically does not return but jumps to an image */
  32. sdp_handle(controller_index);
  33. pr_err("SDP ended\n");
  34. exit:
  35. g_dnl_unregister();
  36. exit_register:
  37. usb_gadget_release(controller_index);
  38. return CMD_RET_FAILURE;
  39. }
  40. U_BOOT_CMD(sdp, 2, 1, do_sdp,
  41. "Serial Downloader Protocol",
  42. "<USB_controller>\n"
  43. " - serial downloader protocol via <USB_controller>\n"
  44. );