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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2020 BayLibre, SAS
* Author: Neil Armstrong <narmstrong@baylibre.com>
*/
#include <common.h>
#include <dm.h>
#include <env.h>
#include <init.h>
#include <net.h>
#include <asm/io.h>
#include <asm/arch/sm.h>
#include <asm/arch/eth.h>
#include <asm/arch/boot.h>
#define EFUSE_MAC_OFFSET 20
#define EFUSE_MAC_SIZE 12
#define MAC_ADDR_LEN 6
int misc_init_r(void)
{
u8 mac_addr[MAC_ADDR_LEN];
char efuse_mac_addr[EFUSE_MAC_SIZE], tmp[3];
ssize_t len;
if (IS_ENABLED(CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG) &&
meson_get_soc_rev(tmp, sizeof(tmp)) > 0)
env_set("soc_rev", tmp);
if (!eth_env_get_enetaddr("ethaddr", mac_addr)) {
len = meson_sm_read_efuse(EFUSE_MAC_OFFSET,
efuse_mac_addr, EFUSE_MAC_SIZE);
if (len != EFUSE_MAC_SIZE)
return 0;
/* MAC is stored in ASCII format, 1bytes = 2characters */
for (int i = 0; i < 6; i++) {
tmp[0] = efuse_mac_addr[i * 2];
tmp[1] = efuse_mac_addr[i * 2 + 1];
tmp[2] = '\0';
mac_addr[i] = simple_strtoul(tmp, NULL, 16);
}
if (is_valid_ethaddr(mac_addr))
eth_env_set_enetaddr("ethaddr", mac_addr);
else
meson_generate_serial_ethaddr();
}
return 0;
}
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