common/spl/spl_dfu.c

   1 /*
   2  * (C) Copyright 2016
   3  * Texas Instruments, <www.ti.com>
   4  *
   5  * Ravi B <ravibabu@ti.com>
   6  *
   7  * SPDX-License-Identifier:     GPL-2.0+
   8  */
   9 #include <common.h>
  10 #include <spl.h>
  11 #include <linux/compiler.h>
  12 #include <errno.h>
  13 #include <watchdog.h>
  14 #include <console.h>
  15 #include <g_dnl.h>
  16 #include <usb.h>
  17 #include <dfu.h>
  18 #include <environment.h>
  19
  20 static int run_dfu(int usb_index, char *interface, char *devstring)
  21 {
  22         int ret;
  23
  24         ret = dfu_init_env_entities(interface, devstring);
  25         if (ret) {
  26                 dfu_free_entities();
  27                 goto exit;
  28         }
  29
  30         run_usb_dnl_gadget(usb_index, "usb_dnl_dfu");
  31 exit:
  32         dfu_free_entities();
  33         return ret;
  34 }
  35
  36 int spl_dfu_cmd(int usbctrl, char *dfu_alt_info, char *interface, char *devstr)
  37 {
  38         char *str_env;
  39         int ret;
  40
  41         /* set default environment */
  42         set_default_env(0);
  43         str_env = env_get(dfu_alt_info);
  44         if (!str_env) {
  45                 pr_err("\"dfu_alt_info\" env variable not defined!\n");
  46                 return -EINVAL;
  47         }
  48
  49         ret = env_set("dfu_alt_info", str_env);
  50         if (ret) {
  51                 pr_err("unable to set env variable \"dfu_alt_info\"!\n");
  52                 return -EINVAL;
  53         }
  54
  55         /* invoke dfu command */
  56         return run_dfu(usbctrl, interface, devstr);
  57 }