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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2022 Marek Vasut <marex@denx.de>
* Copyright 2022 DENX Software Engineering GmbH, Philip Oberfichtner <pro@denx.de>
*/
#include <common.h>
#include <dm.h>
#include <i2c_eeprom.h>
#include <net.h>
#include "dh_common.h"
bool dh_mac_is_in_env(const char *env)
{
unsigned char enetaddr[6];
return eth_env_get_enetaddr(env, enetaddr);
}
int dh_get_mac_from_eeprom(unsigned char *enetaddr, const char *alias)
{
struct udevice *dev;
int ret;
ofnode node;
node = ofnode_path(alias);
if (!ofnode_valid(node)) {
printf("%s: ofnode for %s not found!", __func__, alias);
return -ENOENT;
}
ret = uclass_get_device_by_ofnode(UCLASS_I2C_EEPROM, node, &dev);
if (ret) {
printf("%s: Cannot find EEPROM! ret = %d\n", __func__, ret);
return ret;
}
ret = i2c_eeprom_read(dev, 0xfa, enetaddr, 0x6);
if (ret) {
printf("%s: Error reading EEPROM! ret = %d\n", __func__, ret);
return ret;
}
if (!is_valid_ethaddr(enetaddr)) {
printf("%s: Address read from EEPROM is invalid!\n", __func__);
return -EINVAL;
}
return 0;
}
__weak int dh_setup_mac_address(void)
{
unsigned char enetaddr[6];
if (dh_mac_is_in_env("ethaddr"))
return 0;
if (!dh_get_mac_from_eeprom(enetaddr, "eeprom0"))
return eth_env_set_enetaddr("ethaddr", enetaddr);
printf("%s: Unable to set mac address!\n", __func__);
return -ENXIO;
}
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