board/intel/edison/edison.c

   1 /*
   2  * Copyright (c) 2017 Intel Corporation
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6 #include <common.h>
   7 #include <dwc3-uboot.h>
   8 #include <environment.h>
   9 #include <mmc.h>
  10 #include <u-boot/md5.h>
  11 #include <usb.h>
  12 #include <watchdog.h>
  13
  14 #include <linux/usb/gadget.h>
  15
  16 #include <asm/cache.h>
  17 #include <asm/scu.h>
  18 #include <asm/u-boot-x86.h>
  19
  20 DECLARE_GLOBAL_DATA_PTR;
  21
  22 static struct dwc3_device dwc3_device_data = {
  23         .maximum_speed = USB_SPEED_HIGH,
  24         .base = CONFIG_SYS_USB_OTG_BASE,
  25         .dr_mode = USB_DR_MODE_PERIPHERAL,
  26         .index = 0,
  27 };
  28
  29 int usb_gadget_handle_interrupts(int controller_index)
  30 {
  31         dwc3_uboot_handle_interrupt(controller_index);
  32         WATCHDOG_RESET();
  33         return 0;
  34 }
  35
  36 int board_usb_init(int index, enum usb_init_type init)
  37 {
  38         if (index == 0 && init == USB_INIT_DEVICE)
  39                 return dwc3_uboot_init(&dwc3_device_data);
  40         return -EINVAL;
  41 }
  42
  43 int board_usb_cleanup(int index, enum usb_init_type init)
  44 {
  45         if (index == 0 && init == USB_INIT_DEVICE) {
  46                 dwc3_uboot_exit(index);
  47                 return 0;
  48         }
  49         return -EINVAL;
  50 }
  51
  52 static void assign_serial(void)
  53 {
  54         struct mmc *mmc = find_mmc_device(0);
  55         unsigned char ssn[16];
  56         char usb0addr[18];
  57         char serial[33];
  58         int i;
  59
  60         if (!mmc)
  61                 return;
  62
  63         md5((unsigned char *)mmc->cid, sizeof(mmc->cid), ssn);
  64
  65         snprintf(usb0addr, sizeof(usb0addr), "02:00:86:%02x:%02x:%02x",
  66                  ssn[13], ssn[14], ssn[15]);
  67         env_set("usb0addr", usb0addr);
  68
  69         for (i = 0; i < 16; i++)
  70                 snprintf(&serial[2 * i], 3, "%02x", ssn[i]);
  71         env_set("serial#", serial);
  72
  73 #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
  74         env_save();
  75 #endif
  76 }
  77
  78 static void assign_hardware_id(void)
  79 {
  80         struct ipc_ifwi_version v;
  81         char hardware_id[4];
  82         int ret;
  83
  84         ret = scu_ipc_command(IPCMSG_GET_FW_REVISION, 1, NULL, 0, (u32 *)&v, 4);
  85         if (ret < 0)
  86                 printf("Can't retrieve hardware revision\n");
  87
  88         snprintf(hardware_id, sizeof(hardware_id), "%02X", v.hardware_id);
  89         env_set("hardware_id", hardware_id);
  90
  91 #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
  92         env_save();
  93 #endif
  94 }
  95
  96 int board_late_init(void)
  97 {
  98         if (!getenv("serial#"))
  99                 assign_serial();
 100
 101         if (!getenv("hardware_id"))
 102                 assign_hardware_id();
 103
 104         return 0;
 105 }