edison.c
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/*
* Copyright (c) 2017 Intel Corporation
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dwc3-uboot.h>
#include <environment.h>
#include <mmc.h>
#include <u-boot/md5.h>
#include <usb.h>
#include <watchdog.h>
#include <linux/usb/gadget.h>
#include <asm/cache.h>
#include <asm/scu.h>
#include <asm/u-boot-x86.h>
DECLARE_GLOBAL_DATA_PTR;
static struct dwc3_device dwc3_device_data = {
.maximum_speed = USB_SPEED_HIGH,
.base = CONFIG_SYS_USB_OTG_BASE,
.dr_mode = USB_DR_MODE_PERIPHERAL,
.index = 0,
};
int usb_gadget_handle_interrupts(int controller_index)
{
dwc3_uboot_handle_interrupt(controller_index);
WATCHDOG_RESET();
return 0;
}
int board_usb_init(int index, enum usb_init_type init)
{
if (index == 0 && init == USB_INIT_DEVICE)
return dwc3_uboot_init(&dwc3_device_data);
return -EINVAL;
}
int board_usb_cleanup(int index, enum usb_init_type init)
{
if (index == 0 && init == USB_INIT_DEVICE) {
dwc3_uboot_exit(index);
return 0;
}
return -EINVAL;
}
static void assign_serial(void)
{
struct mmc *mmc = find_mmc_device(0);
unsigned char ssn[16];
char usb0addr[18];
char serial[33];
int i;
if (!mmc)
return;
md5((unsigned char *)mmc->cid, sizeof(mmc->cid), ssn);
snprintf(usb0addr, sizeof(usb0addr), "02:00:86:%02x:%02x:%02x",
ssn[13], ssn[14], ssn[15]);
env_set("usb0addr", usb0addr);
for (i = 0; i < 16; i++)
snprintf(&serial[2 * i], 3, "%02x", ssn[i]);
env_set("serial#", serial);
#if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
env_save();
#endif
}
static void assign_hardware_id(void)
{
struct ipc_ifwi_version v;
char hardware_id[4];
int ret;
ret = scu_ipc_command(IPCMSG_GET_FW_REVISION, 1, NULL, 0, (u32 *)&v, 4);
if (ret < 0)
printf("Can't retrieve hardware revision\n");
snprintf(hardware_id, sizeof(hardware_id), "%02X", v.hardware_id);
env_set("hardware_id", hardware_id);
#if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
env_save();
#endif
}
int board_late_init(void)
{
if (!env_get("serial#"))
assign_serial();
if (!env_get("hardware_id"))
assign_hardware_id();
return 0;
}