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
  15 static int do_dfu(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  16 {
  17         char *s = "dfu";
  18         int ret, i = 0;
  19
  20         if (argc < 3)
  21                 return CMD_RET_USAGE;
  22
  23         ret = dfu_init_env_entities(argv[1], simple_strtoul(argv[2], NULL, 10));
  24         if (ret)
  25                 return ret;
  26
  27         if (argc > 3 && strcmp(argv[3], "list") == 0) {
  28                 dfu_show_entities();
  29                 goto done;
  30         }
  31
  32 #ifdef CONFIG_TRATS
  33         board_usb_init();
  34 #endif
  35
  36         g_dnl_register(s);
  37         while (1) {
  38                 if (dfu_reset())
  39                         /*
  40                          * This extra number of usb_gadget_handle_interrupts()
  41                          * calls is necessary to assure correct transmission
  42                          * completion with dfu-util
  43                          */
  44                         if (++i == 10)
  45                                 goto exit;
  46
  47                 if (ctrlc())
  48                         goto exit;
  49
  50                 usb_gadget_handle_interrupts();
  51         }
  52 exit:
  53         g_dnl_unregister();
  54 done:
  55         dfu_free_entities();
  56
  57         if (dfu_reset())
  58                 run_command("reset", 0);
  59
  60         return CMD_RET_SUCCESS;
  61 }
  62
  63 U_BOOT_CMD(dfu, CONFIG_SYS_MAXARGS, 1, do_dfu,
  64         "Device Firmware Upgrade",
  65         "<interface> <dev> [list]\n"
  66         "  - device firmware upgrade on a device <dev>\n"
  67         "    attached to interface <interface>\n"
  68         "    [list] - list available alt settings"
  69 );