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 <console.h>
  13 #include <g_dnl.h>
  14 #include <usb.h>
  15
  16 static int do_fastboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
  17 {
  18         int controller_index;
  19         char *usb_controller;
  20         int ret;
  21
  22         if (argc < 2)
  23                 return CMD_RET_USAGE;
  24
  25         usb_controller = argv[1];
  26         controller_index = simple_strtoul(usb_controller, NULL, 0);
  27
  28         ret = board_usb_init(controller_index, USB_INIT_DEVICE);
  29         if (ret) {
  30                 pr_err("USB init failed: %d", ret);
  31                 return CMD_RET_FAILURE;
  32         }
  33
  34         g_dnl_clear_detach();
  35         ret = g_dnl_register("usb_dnl_fastboot");
  36         if (ret)
  37                 return ret;
  38
  39         if (!g_dnl_board_usb_cable_connected()) {
  40                 puts("\rUSB cable not detected.\n" \
  41                      "Command exit.\n");
  42                 ret = CMD_RET_FAILURE;
  43                 goto exit;
  44         }
  45
  46         while (1) {
  47                 if (g_dnl_detach())
  48                         break;
  49                 if (ctrlc())
  50                         break;
  51                 usb_gadget_handle_interrupts(controller_index);
  52         }
  53
  54         ret = CMD_RET_SUCCESS;
  55
  56 exit:
  57         g_dnl_unregister();
  58         g_dnl_clear_detach();
  59         board_usb_cleanup(controller_index, USB_INIT_DEVICE);
  60
  61         return ret;
  62 }
  63
  64 U_BOOT_CMD(
  65         fastboot, 2, 1, do_fastboot,
  66         "use USB Fastboot protocol",
  67         "<USB_controller>\n"
  68         "    - run as a fastboot usb device"
  69 );