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https://github.com/AsahiLinux/u-boot
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386f921cee
This is a starting point for unifying duplicate code in the DH board files. The functions for setting up MAC addresses are very similar for the i.MX6, i.MX8 and stm32mp1 based boards. All pre-existing implementations follow the same logic: (1) Check if ethaddr is already set in the environment (2) If not, try to get it from a board specific location (e.g. fuse) (3) If not, try to get it from eeprom After this commit, (1) and (3) are implemented as common functions, ready to be used by board specific files. Furthermore there is an implementation of (2) for imx based boards. Signed-off-by: Philip Oberfichtner <pro@denx.de> Reviewed-by: Marek Vasut <marex@denx.de>
65 lines
1.4 KiB
C
65 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2022 Marek Vasut <marex@denx.de>
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* Copyright 2022 DENX Software Engineering GmbH, Philip Oberfichtner <pro@denx.de>
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*/
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#include <common.h>
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#include <dm.h>
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#include <i2c_eeprom.h>
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#include <net.h>
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#include "dh_common.h"
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bool dh_mac_is_in_env(const char *env)
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{
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unsigned char enetaddr[6];
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return eth_env_get_enetaddr(env, enetaddr);
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}
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int dh_get_mac_from_eeprom(unsigned char *enetaddr, const char *alias)
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{
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struct udevice *dev;
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int ret;
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ofnode node;
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node = ofnode_path(alias);
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if (!ofnode_valid(node)) {
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printf("%s: ofnode for %s not found!", __func__, alias);
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return -ENOENT;
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}
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ret = uclass_get_device_by_ofnode(UCLASS_I2C_EEPROM, node, &dev);
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if (ret) {
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printf("%s: Cannot find EEPROM! ret = %d\n", __func__, ret);
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return ret;
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}
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ret = i2c_eeprom_read(dev, 0xfa, enetaddr, 0x6);
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if (ret) {
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printf("%s: Error reading EEPROM! ret = %d\n", __func__, ret);
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return ret;
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}
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if (!is_valid_ethaddr(enetaddr)) {
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printf("%s: Address read from EEPROM is invalid!\n", __func__);
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return -EINVAL;
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}
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return 0;
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}
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__weak int dh_setup_mac_address(void)
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{
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unsigned char enetaddr[6];
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if (dh_mac_is_in_env("ethaddr"))
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return 0;
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if (!dh_get_mac_from_eeprom(enetaddr, "eeprom0"))
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return eth_env_set_enetaddr("ethaddr", enetaddr);
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printf("%s: Unable to set mac address!\n", __func__);
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return -ENXIO;
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}
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