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         char *env_bkp;
  23         int ret;
  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 (ctrlc())
  53                         goto exit;
  54
  55                 usb_gadget_handle_interrupts();
  56         }
  57 exit:
  58         g_dnl_unregister();
  59 done:
  60         dfu_free_entities();
  61         free(env_bkp);
  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 );