common/cmd_fastboot.c

   1 /*
   2  * Copyright 2008 - 2009 Windriver, <www.windriver.com>
   3  * Author: Tom Rix <Tom.Rix@windriver.com>
   4  *
   5  * (C) Copyright 2014 Linaro, Ltd.
   6  * Rob Herring <robh@kernel.org>
   7  *
   8  * SPDX-License-Identifier:     GPL-2.0+
   9  */
  10 #include <common.h>
  11 #include <command.h>
  12 #include <g_dnl.h>
  13 #include <usb.h>
  14
  15 static int do_fastboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
  16 {
  17         int controller_index;
  18         char *usb_controller;
  19         int ret;
  20
  21         if (argc < 2)
  22                 return CMD_RET_USAGE;
  23
  24         usb_controller = argv[1];
  25         controller_index = simple_strtoul(usb_controller, NULL, 0);
  26
  27         ret = board_usb_init(controller_index, USB_INIT_DEVICE);
  28         if (ret) {
  29                 error("USB init failed: %d", ret);
  30                 return CMD_RET_FAILURE;
  31         }
  32
  33         g_dnl_clear_detach();
  34         ret = g_dnl_register("usb_dnl_fastboot");
  35         if (ret)
  36                 return ret;
  37
  38         if (!g_dnl_board_usb_cable_connected()) {
  39                 puts("\rUSB cable not detected.\n" \
  40                      "Command exit.\n");
  41                 ret = CMD_RET_FAILURE;
  42                 goto exit;
  43         }
  44
  45         while (1) {
  46                 if (g_dnl_detach())
  47                         break;
  48                 if (ctrlc())
  49                         break;
  50                 usb_gadget_handle_interrupts(controller_index);
  51         }
  52
  53         ret = CMD_RET_SUCCESS;
  54
  55 exit:
  56         g_dnl_unregister();
  57         g_dnl_clear_detach();
  58         board_usb_cleanup(controller_index, USB_INIT_DEVICE);
  59
  60         return ret;
  61 }
  62
  63 U_BOOT_CMD(
  64         fastboot, 2, 1, do_fastboot,
  65         "use USB Fastboot protocol",
  66         "<USB_controller>\n"
  67         "    - run as a fastboot usb device"
  68 );