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 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