u-boot/board/amlogic/p212/p212.c
Neil Armstrong 3f1f9f08eb board: amlogic: Generate unique MAC address for Q200 and P212 based boards
Enable unique MAC address generation for boards usins SoCs having
a known functional and valid unique serial number.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2019-07-04 16:04:59 +02:00

47 lines
1 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2016 BayLibre, SAS
* Author: Neil Armstrong <narmstrong@baylibre.com>
*/
#include <common.h>
#include <dm.h>
#include <environment.h>
#include <asm/io.h>
#include <asm/arch/gx.h>
#include <asm/arch/sm.h>
#include <asm/arch/eth.h>
#include <asm/arch/mem.h>
#define EFUSE_SN_OFFSET 20
#define EFUSE_SN_SIZE 16
#define EFUSE_MAC_OFFSET 52
#define EFUSE_MAC_SIZE 6
int misc_init_r(void)
{
u8 mac_addr[EFUSE_MAC_SIZE];
char serial[EFUSE_SN_SIZE];
ssize_t len;
meson_eth_init(PHY_INTERFACE_MODE_RMII,
MESON_USE_INTERNAL_RMII_PHY);
if (!eth_env_get_enetaddr("ethaddr", mac_addr)) {
len = meson_sm_read_efuse(EFUSE_MAC_OFFSET,
mac_addr, EFUSE_MAC_SIZE);
if (len == EFUSE_MAC_SIZE && is_valid_ethaddr(mac_addr))
eth_env_set_enetaddr("ethaddr", mac_addr);
else
meson_generate_serial_ethaddr();
}
if (!env_get("serial#")) {
len = meson_sm_read_efuse(EFUSE_SN_OFFSET, serial,
EFUSE_SN_SIZE);
if (len == EFUSE_SN_SIZE)
env_set("serial#", serial);
}
return 0;
}