common/spl/spl_dfu.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2016
   4  * Texas Instruments, <www.ti.com>
   5  *
   6  * Ravi B <ravibabu@ti.com>
   7  */
   8 #include <common.h>
   9 #include <spl.h>
  10 #include <linux/compiler.h>
  11 #include <errno.h>
  12 #include <watchdog.h>
  13 #include <console.h>
  14 #include <g_dnl.h>
  15 #include <usb.h>
  16 #include <dfu.h>
  17 #include <environment.h>
  18
  19 static int run_dfu(int usb_index, char *interface, char *devstring)
  20 {
  21         int ret;
  22
  23         ret = dfu_init_env_entities(interface, devstring);
  24         if (ret) {
  25                 dfu_free_entities();
  26                 goto exit;
  27         }
  28
  29         run_usb_dnl_gadget(usb_index, "usb_dnl_dfu");
  30 exit:
  31         dfu_free_entities();
  32         return ret;
  33 }
  34
  35 int spl_dfu_cmd(int usbctrl, char *dfu_alt_info, char *interface, char *devstr)
  36 {
  37         char *str_env;
  38         int ret;
  39
  40         /* set default environment */
  41         set_default_env(NULL, 0);
  42         str_env = env_get(dfu_alt_info);
  43         if (!str_env) {
  44                 pr_err("\"dfu_alt_info\" env variable not defined!\n");
  45                 return -EINVAL;
  46         }
  47
  48         ret = env_set("dfu_alt_info", str_env);
  49         if (ret) {
  50                 pr_err("unable to set env variable \"dfu_alt_info\"!\n");
  51                 return -EINVAL;
  52         }
  53
  54         /* invoke dfu command */
  55         return run_dfu(usbctrl, interface, devstr);
  56 }