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 <command.h>
  13 #include <malloc.h>
  14 #include <dfu.h>
  15 #include <asm/errno.h>
  16 #include <g_dnl.h>
  17
  18 static int do_dfu(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  19 {
  20         char *s = "dfu";
  21         int ret, i = 0;
  22
  23         if (argc < 3)
  24                 return CMD_RET_USAGE;
  25
  26         ret = dfu_init_env_entities(argv[1], simple_strtoul(argv[2], NULL, 10));
  27         if (ret)
  28                 return ret;
  29
  30         if (argc > 3 && strcmp(argv[3], "list") == 0) {
  31                 dfu_show_entities();
  32                 goto done;
  33         }
  34
  35 #ifdef CONFIG_TRATS
  36         board_usb_init();
  37 #endif
  38
  39         g_dnl_register(s);
  40         while (1) {
  41                 if (dfu_reset())
  42                         /*
  43                          * This extra number of usb_gadget_handle_interrupts()
  44                          * calls is necessary to assure correct transmission
  45                          * completion with dfu-util
  46                          */
  47                         if (++i == 10)
  48                                 goto exit;
  49
  50                 if (ctrlc())
  51                         goto exit;
  52
  53                 usb_gadget_handle_interrupts();
  54         }
  55 exit:
  56         g_dnl_unregister();
  57 done:
  58         dfu_free_entities();
  59
  60         if (dfu_reset())
  61                 run_command("reset", 0);
  62
  63         return CMD_RET_SUCCESS;
  64 }
  65
  66 U_BOOT_CMD(dfu, CONFIG_SYS_MAXARGS, 1, do_dfu,
  67         "Device Firmware Upgrade",
  68         "<interface> <dev> [list]\n"
  69         "  - device firmware upgrade on a device <dev>\n"
  70         "    attached to interface <interface>\n"
  71         "    [list] - list available alt settings"
  72 );