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d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commitc8ffd1356d, reversing changes made to2ee6f3a5f7. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
129 lines
2.9 KiB
C
129 lines
2.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2019 Microchip Technology Inc. and its subsidiaries
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*
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* Author: Tudor Ambarus <tudor.ambarus@microchip.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 <net.h>
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#include <linux/mtd/spi-nor.h>
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#include <netdev.h>
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#define ETH_ADDR_SIZE 6
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#ifdef CONFIG_SPI_FLASH_SST
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#define SFDP_MICROCHIP_MANUF_ID 0xbf
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#define SFDP_MICROCHIP_MEM_TYPE 0x26
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#define SFDP_MICROCHIP_DEV_ID 0x43
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#define SFDP_MICROCHIP_EUI_OFFSET 0x60
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#define SFDP_MICROCHIP_EUI48 0x30
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struct sst26vf064beui {
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u8 manufacturer_id;
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u8 memory_type;
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u8 device_id;
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u8 reserved;
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};
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/**
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* sst26vf064beui_check() - Check the validity of the EUI-48 information from
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* the sst26vf064beui SPI NOR Microchip SFDP table.
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* @manufacturer_sfdp: pointer to the Microchip manufacturer specific SFDP
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* table.
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*
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* Return: 0 on success, -errno otherwise.
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*/
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static int sst26vf064beui_check(const u8 *manufacturer_sfdp)
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{
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struct sst26vf064beui *sst26vf064beui =
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(struct sst26vf064beui *)manufacturer_sfdp;
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if (sst26vf064beui->manufacturer_id != SFDP_MICROCHIP_MANUF_ID)
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return -EINVAL;
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if (sst26vf064beui->memory_type != SFDP_MICROCHIP_MEM_TYPE)
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return -EINVAL;
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if (sst26vf064beui->device_id != SFDP_MICROCHIP_DEV_ID)
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return -EINVAL;
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/*
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* Check if the EUI-48 MAC address is programmed in the next six address
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* locations.
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*/
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if (manufacturer_sfdp[SFDP_MICROCHIP_EUI_OFFSET] !=
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SFDP_MICROCHIP_EUI48)
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return -EINVAL;
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return 0;
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}
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/**
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* sst26vf064beui_get_ethaddr() - Get the ethernet address from the
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* sst26vf064beui SPI NOR Microchip SFDP table.
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* @manufacturer_sfdp: pointer to the Microchip manufacturer specific SFDP
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* table.
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* @ethaddr: pointer where to fill the ethernet address
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* @size: size of the ethernet address.
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*
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* Return: 0 on success, -errno otherwise.
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*/
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static int sst26vf064beui_get_ethaddr(const u8 *manufacturer_sfdp,
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u8 *ethaddr, size_t size)
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{
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u64 eui_table[2];
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u64 *p = (u64 *)&manufacturer_sfdp[SFDP_MICROCHIP_EUI_OFFSET];
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int i, ret;
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ret = sst26vf064beui_check(manufacturer_sfdp);
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if (ret)
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return ret;
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for (i = 0; i < 2; i++)
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eui_table[i] = le64_to_cpu(p[i]);
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/* Ethaddr starts at offset one. */
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memcpy(ethaddr, &((u8 *)eui_table)[1], size);
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return 0;
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}
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#endif
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/**
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* at91_spi_nor_set_ethaddr() - Retrieve and set the ethernet address from the
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* SPI NOR manufacturer specific SFDP table.
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*/
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void at91_spi_nor_set_ethaddr(void)
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{
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struct udevice *dev;
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struct spi_nor *nor;
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const char *ethaddr_name = "ethaddr";
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u8 ethaddr[ETH_ADDR_SIZE] = {0};
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if (env_get(ethaddr_name))
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return;
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if (uclass_first_device_err(UCLASS_SPI_FLASH, &dev))
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return;
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nor = dev_get_uclass_priv(dev);
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if (!nor)
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return;
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if (!nor->manufacturer_sfdp)
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return;
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#ifdef CONFIG_SPI_FLASH_SST
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if (sst26vf064beui_get_ethaddr(nor->manufacturer_sfdp, ethaddr,
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ETH_ADDR_SIZE))
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return;
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#endif
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if (is_valid_ethaddr(ethaddr))
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eth_env_set_enetaddr(ethaddr_name, ethaddr);
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}
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