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https://github.com/brain-hackers/u-boot-brain
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6de936b011
Add a proper Odroid-N2 board support to handle the Ethernet MAC address stored in the in-SoC eFuses. Signed-off-by: Pascal Vizeli <pvizeli@syshack.ch> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Tested-by: Anand Moon <linux.amoon@gmail.com>
50 lines
1.1 KiB
C
50 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2020 BayLibre, SAS
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* Author: Neil Armstrong <narmstrong@baylibre.com>
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*/
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#include <common.h>
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#include <dm.h>
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#include <env.h>
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#include <init.h>
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#include <net.h>
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#include <asm/io.h>
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#include <asm/arch/sm.h>
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#include <asm/arch/eth.h>
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#define EFUSE_MAC_OFFSET 20
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#define EFUSE_MAC_SIZE 12
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#define MAC_ADDR_LEN 6
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int misc_init_r(void)
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{
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u8 mac_addr[MAC_ADDR_LEN];
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char efuse_mac_addr[EFUSE_MAC_SIZE], tmp[3];
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ssize_t len;
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meson_eth_init(PHY_INTERFACE_MODE_RGMII, 0);
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if (!eth_env_get_enetaddr("ethaddr", mac_addr)) {
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len = meson_sm_read_efuse(EFUSE_MAC_OFFSET,
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efuse_mac_addr, EFUSE_MAC_SIZE);
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if (len != EFUSE_MAC_SIZE)
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return 0;
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/* MAC is stored in ASCII format, 1bytes = 2characters */
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for (int i = 0; i < 6; i++) {
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tmp[0] = efuse_mac_addr[i * 2];
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tmp[1] = efuse_mac_addr[i * 2 + 1];
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tmp[2] = '\0';
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mac_addr[i] = simple_strtoul(tmp, NULL, 16);
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}
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if (is_valid_ethaddr(mac_addr))
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eth_env_set_enetaddr("ethaddr", mac_addr);
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else
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meson_generate_serial_ethaddr();
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}
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return 0;
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}
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