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https://github.com/AsahiLinux/u-boot
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3f1f9f08eb
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>
47 lines
1 KiB
C
47 lines
1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2016 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 <environment.h>
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#include <asm/io.h>
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#include <asm/arch/gx.h>
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#include <asm/arch/sm.h>
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#include <asm/arch/eth.h>
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#include <asm/arch/mem.h>
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#define EFUSE_SN_OFFSET 20
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#define EFUSE_SN_SIZE 16
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#define EFUSE_MAC_OFFSET 52
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#define EFUSE_MAC_SIZE 6
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int misc_init_r(void)
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{
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u8 mac_addr[EFUSE_MAC_SIZE];
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char serial[EFUSE_SN_SIZE];
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ssize_t len;
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meson_eth_init(PHY_INTERFACE_MODE_RMII,
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MESON_USE_INTERNAL_RMII_PHY);
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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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mac_addr, EFUSE_MAC_SIZE);
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if (len == EFUSE_MAC_SIZE && 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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if (!env_get("serial#")) {
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len = meson_sm_read_efuse(EFUSE_SN_OFFSET, serial,
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EFUSE_SN_SIZE);
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if (len == EFUSE_SN_SIZE)
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env_set("serial#", serial);
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}
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return 0;
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}
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