common/cmd_dfu.c

   1 /*
   2  * cmd_dfu.c -- dfu command
   3  *
   4  * Copyright (C) 2012 Samsung Electronics
   5  * authors: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
   6  *          Lukasz Majewski <l.majewski@samsung.com>
   7  *
   8  * SPDX-License-Identifier:     GPL-2.0+
   9  */
  10
  11 #include <common.h>
  12 #include <dfu.h>
  13 #include <g_dnl.h>
  14 #include <usb.h>
  15
  16 static int do_dfu(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  17 {
  18         if (argc < 4)
  19                 return CMD_RET_USAGE;
  20
  21         char *usb_controller = argv[1];
  22         char *interface = argv[2];
  23         char *devstring = argv[3];
  24
  25         int ret, i = 0;
  26
  27         ret = dfu_init_env_entities(interface, devstring);
  28         if (ret)
  29                 goto done;
  30
  31         ret = CMD_RET_SUCCESS;
  32         if (argc > 4 && strcmp(argv[4], "list") == 0) {
  33                 dfu_show_entities();
  34                 goto done;
  35         }
  36
  37         int controller_index = simple_strtoul(usb_controller, NULL, 0);
  38         board_usb_init(controller_index, USB_INIT_DEVICE);
  39
  40         g_dnl_register("usb_dnl_dfu");
  41         while (1) {
  42                 if (dfu_reset())
  43                         /*
  44                          * This extra number of usb_gadget_handle_interrupts()
  45                          * calls is necessary to assure correct transmission
  46                          * completion with dfu-util
  47                          */
  48                         if (++i == 10)
  49                                 goto exit;
  50
  51                 if (ctrlc())
  52                         goto exit;
  53
  54                 usb_gadget_handle_interrupts();
  55         }
  56 exit:
  57         g_dnl_unregister();
  58 done:
  59         dfu_free_entities();
  60
  61         if (dfu_reset())
  62                 run_command("reset", 0);
  63
  64         return ret;
  65 }
  66
  67 U_BOOT_CMD(dfu, CONFIG_SYS_MAXARGS, 1, do_dfu,
  68         "Device Firmware Upgrade",
  69         "<USB_controller> <interface> <dev> [list]\n"
  70         "  - device firmware upgrade via <USB_controller>\n"
  71         "    on device <dev>, attached to interface\n"
  72         "    <interface>\n"
  73         "    [list] - list available alt settings\n"
  74 );