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
do_sdp(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])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 usb_gadget_initialize(controller_index);
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 usb_gadget_release(controller_index);
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 );
50