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https://github.com/AsahiLinux/u-boot
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829e8c73dd
It is much easier to point to eeprom which stores information like MAC
address directly via DT. eeprom which contains this information is
pointed by /chosen/xlnx,eeprom parameter.
For example:
chosen {
bootargs = "earlycon";
stdout-path = "serial0:115200n8";
+ xlnx,eeprom = &eeprom;
};
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
57 lines
1.3 KiB
C
57 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2014 - 2019 Xilinx, Inc.
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* Michal Simek <michal.simek@xilinx.com>
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*/
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#include <common.h>
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#include <dm/uclass.h>
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#include <i2c.h>
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#if !defined(CONFIG_DM_I2C)
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int zynq_board_read_rom_ethaddr(unsigned char *ethaddr)
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{
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#if defined(CONFIG_ZYNQ_GEM_EEPROM_ADDR) && \
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defined(CONFIG_ZYNQ_GEM_I2C_MAC_OFFSET) && \
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defined(CONFIG_ZYNQ_EEPROM_BUS)
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i2c_set_bus_num(CONFIG_ZYNQ_EEPROM_BUS);
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if (eeprom_read(CONFIG_ZYNQ_GEM_EEPROM_ADDR,
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CONFIG_ZYNQ_GEM_I2C_MAC_OFFSET,
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ethaddr, 6))
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printf("I2C EEPROM MAC address read failed\n");
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#endif
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return 0;
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}
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#else
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int zynq_board_read_rom_ethaddr(unsigned char *ethaddr)
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{
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int ret = -EINVAL;
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#if defined(CONFIG_ZYNQ_GEM_I2C_MAC_OFFSET)
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struct udevice *dev;
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ofnode eeprom;
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eeprom = ofnode_get_chosen_node("xlnx,eeprom");
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if (!ofnode_valid(eeprom))
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return -ENODEV;
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debug("%s: Path to EEPROM %s\n", __func__,
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ofnode_get_chosen_prop("xlnx,eeprom"));
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ret = uclass_get_device_by_ofnode(UCLASS_I2C_EEPROM, eeprom, &dev);
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if (ret)
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return ret;
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ret = dm_i2c_read(dev, CONFIG_ZYNQ_GEM_I2C_MAC_OFFSET, ethaddr, 6);
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if (ret)
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debug("%s: I2C EEPROM MAC address read failed\n", __func__);
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else
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debug("%s: I2C EEPROM MAC %pM\n", __func__, ethaddr);
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#endif
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return ret;
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}
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#endif
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