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         const char *str_env;
  21         char *s = "dfu";
  22         int ret, i = 0;
  23         char *env_bkp;
  24
  25         if (argc < 3)
  26                 return CMD_RET_USAGE;
  27
  28         str_env = getenv("dfu_alt_info");
  29         if (str_env == NULL) {
  30                 printf("%s: \"dfu_alt_info\" env variable not defined!\n",
  31                        __func__);
  32                 return CMD_RET_FAILURE;
  33         }
  34
  35         env_bkp = strdup(str_env);
  36         ret = dfu_config_entities(env_bkp, argv[1],
  37                             (int)simple_strtoul(argv[2], NULL, 10));
  38         if (ret)
  39                 return CMD_RET_FAILURE;
  40
  41         if (argc > 3 && strcmp(argv[3], "list") == 0) {
  42                 dfu_show_entities();
  43                 goto done;
  44         }
  45
  46 #ifdef CONFIG_TRATS
  47         board_usb_init();
  48 #endif
  49
  50         g_dnl_register(s);
  51         while (1) {
  52                 if (dfu_reset())
  53                         /*
  54                          * This extra number of usb_gadget_handle_interrupts()
  55                          * calls is necessary to assure correct transmission
  56                          * completion with dfu-util
  57                          */
  58                         if (++i == 10)
  59                                 goto exit;
  60
  61                 if (ctrlc())
  62                         goto exit;
  63
  64                 usb_gadget_handle_interrupts();
  65         }
  66 exit:
  67         g_dnl_unregister();
  68 done:
  69         dfu_free_entities();
  70         free(env_bkp);
  71
  72         if (dfu_reset())
  73                 run_command("reset", 0);
  74
  75         return CMD_RET_SUCCESS;
  76 }
  77
  78 U_BOOT_CMD(dfu, CONFIG_SYS_MAXARGS, 1, do_dfu,
  79         "Device Firmware Upgrade",
  80         "<interface> <dev> [list]\n"
  81         "  - device firmware upgrade on a device <dev>\n"
  82         "    attached to interface <interface>\n"
  83         "    [list] - list available alt settings"
  84 );