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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2017-2020 ABB
*/
#include <common.h>
#include <i2c.h>
#include <asm/gpio.h>
#include "../common/common.h"
/*
* For FU1, the MAC address associated with the mgmt port should
* be the base address (as read from the IVM) + 4, and for FU2 it
* is + 10
*/
#define MAC_ADDRESS_OFFSET_FU1 4
#define MAC_ADDRESS_OFFSET_FU2 10
/*
* This function reads the state of GPIO40 and returns true (non-zero)
* if it is '1' and false(0) otherwise.
*
* This pin is routed to a pull-up on FU2 and a pull-down on
*/
#define GPIO_FU_DETECTION 40
int secu1_is_fu2(void)
{
int value;
int ret = gpio_request(GPIO_FU_DETECTION, "secu");
if (ret) {
printf("gpio: failed to request pin for FU detection\n");
return 1;
}
gpio_direction_input(GPIO_FU_DETECTION);
value = gpio_get_value(GPIO_FU_DETECTION);
if (value == 1)
printf("FU2 detected\n");
else
printf("FU1 detected\n");
return value;
}
static uchar ivm_content[CONFIG_SYS_IVM_EEPROM_MAX_LEN];
#if defined(CONFIG_HUSH_INIT_VAR)
int hush_init_var(void)
{
ivm_analyze_eeprom(ivm_content, CONFIG_SYS_IVM_EEPROM_MAX_LEN);
return 0;
}
#endif
int misc_init_r(void)
{
if (secu1_is_fu2())
ivm_read_eeprom(ivm_content, CONFIG_SYS_IVM_EEPROM_MAX_LEN,
MAC_ADDRESS_OFFSET_FU2);
else
ivm_read_eeprom(ivm_content, CONFIG_SYS_IVM_EEPROM_MAX_LEN,
MAC_ADDRESS_OFFSET_FU1);
return 0;
}
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