upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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501 lines
12 KiB
501 lines
12 KiB
/*
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* Copyright 2006, 2008-2009 Freescale Semiconductor
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* York Sun (yorksun@freescale.com)
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* Haiying Wang (haiying.wang@freescale.com)
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* Timur Tabi (timur@freescale.com)
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <command.h>
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#include <i2c.h>
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#include <linux/ctype.h>
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#include "../common/eeprom.h"
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#if !defined(CONFIG_SYS_I2C_EEPROM_CCID) && !defined(CONFIG_SYS_I2C_EEPROM_NXID)
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#error "Please define either CONFIG_SYS_I2C_EEPROM_CCID or CONFIG_SYS_I2C_EEPROM_NXID"
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#endif
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#define MAX_NUM_PORTS 8 /* This value must be 8 as defined in doc */
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/**
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* static eeprom: EEPROM layout for CCID or NXID formats
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*
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* See application note AN3638 for details.
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*/
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static struct __attribute__ ((__packed__)) eeprom {
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#ifdef CONFIG_SYS_I2C_EEPROM_CCID
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u8 id[4]; /* 0x00 - 0x03 EEPROM Tag 'CCID' */
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u8 major; /* 0x04 Board revision, major */
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u8 minor; /* 0x05 Board revision, minor */
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u8 sn[10]; /* 0x06 - 0x0F Serial Number*/
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u8 errata[2]; /* 0x10 - 0x11 Errata Level */
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u8 date[6]; /* 0x12 - 0x17 Build Date */
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u8 res_0[40]; /* 0x18 - 0x3f Reserved */
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u8 mac_count; /* 0x40 Number of MAC addresses */
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u8 mac_flag; /* 0x41 MAC table flags */
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u8 mac[MAX_NUM_PORTS][6]; /* 0x42 - 0x71 MAC addresses */
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u32 crc; /* 0x72 CRC32 checksum */
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#endif
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#ifdef CONFIG_SYS_I2C_EEPROM_NXID
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u8 id[4]; /* 0x00 - 0x03 EEPROM Tag 'NXID' */
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u8 sn[12]; /* 0x04 - 0x0F Serial Number */
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u8 errata[5]; /* 0x10 - 0x14 Errata Level */
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u8 date[6]; /* 0x15 - 0x1a Build Date */
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u8 res_0; /* 0x1b Reserved */
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u32 version; /* 0x1c - 0x1f NXID Version */
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u8 tempcal[8]; /* 0x20 - 0x27 Temperature Calibration Factors */
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u8 tempcalsys[2]; /* 0x28 - 0x29 System Temperature Calibration Factors */
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u8 tempcalflags; /* 0x2a Temperature Calibration Flags */
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u8 res_1[21]; /* 0x2b - 0x3f Reserved */
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u8 mac_count; /* 0x40 Number of MAC addresses */
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u8 mac_flag; /* 0x41 MAC table flags */
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u8 mac[MAX_NUM_PORTS][6]; /* 0x42 - 0x71 MAC addresses */
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u32 crc; /* 0x72 CRC32 checksum */
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#endif
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} e;
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/* Set to 1 if we've read EEPROM into memory */
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static int has_been_read = 0;
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#ifdef CONFIG_SYS_I2C_EEPROM_NXID
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/* Is this a valid NXID EEPROM? */
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#define is_valid ((e.id[0] == 'N') || (e.id[1] == 'X') || \
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(e.id[2] == 'I') || (e.id[3] == 'D'))
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#endif
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#ifdef CONFIG_SYS_I2C_EEPROM_CCID
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/* Is this a valid CCID EEPROM? */
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#define is_valid ((e.id[0] == 'C') || (e.id[1] == 'C') || \
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(e.id[2] == 'I') || (e.id[3] == 'D'))
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#endif
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/**
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* show_eeprom - display the contents of the EEPROM
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*/
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static void show_eeprom(void)
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{
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int i;
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unsigned int crc;
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/* EEPROM tag ID, either CCID or NXID */
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#ifdef CONFIG_SYS_I2C_EEPROM_NXID
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printf("ID: %c%c%c%c v%u\n", e.id[0], e.id[1], e.id[2], e.id[3],
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be32_to_cpu(e.version));
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#else
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printf("ID: %c%c%c%c\n", e.id[0], e.id[1], e.id[2], e.id[3]);
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#endif
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/* Serial number */
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printf("SN: %s\n", e.sn);
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/* Errata level. */
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#ifdef CONFIG_SYS_I2C_EEPROM_NXID
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printf("Errata: %s\n", e.errata);
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#else
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printf("Errata: %c%c\n",
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e.errata[0] ? e.errata[0] : '.',
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e.errata[1] ? e.errata[1] : '.');
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#endif
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/* Build date, BCD date values, as YYMMDDhhmmss */
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printf("Build date: 20%02x/%02x/%02x %02x:%02x:%02x %s\n",
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e.date[0], e.date[1], e.date[2],
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e.date[3] & 0x7F, e.date[4], e.date[5],
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e.date[3] & 0x80 ? "PM" : "");
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/* Show MAC addresses */
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for (i = 0; i < min(e.mac_count, MAX_NUM_PORTS); i++) {
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u8 *p = e.mac[i];
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printf("Eth%u: %02x:%02x:%02x:%02x:%02x:%02x\n", i,
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p[0], p[1], p[2], p[3], p[4], p[5]);
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}
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crc = crc32(0, (void *)&e, sizeof(e) - 4);
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if (crc == be32_to_cpu(e.crc))
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printf("CRC: %08x\n", be32_to_cpu(e.crc));
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else
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printf("CRC: %08x (should be %08x)\n",
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be32_to_cpu(e.crc), crc);
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#ifdef DEBUG
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printf("EEPROM dump: (0x%x bytes)\n", sizeof(e));
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for (i = 0; i < sizeof(e); i++) {
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if ((i % 16) == 0)
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printf("%02X: ", i);
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printf("%02X ", ((u8 *)&e)[i]);
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if (((i % 16) == 15) || (i == sizeof(e) - 1))
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printf("\n");
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}
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#endif
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}
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/**
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* read_eeprom - read the EEPROM into memory
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*/
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static int read_eeprom(void)
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{
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int ret;
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#ifdef CONFIG_SYS_EEPROM_BUS_NUM
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unsigned int bus;
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#endif
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if (has_been_read)
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return 0;
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#ifdef CONFIG_SYS_EEPROM_BUS_NUM
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bus = i2c_get_bus_num();
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i2c_set_bus_num(CONFIG_SYS_EEPROM_BUS_NUM);
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#endif
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ret = i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0, CONFIG_SYS_I2C_EEPROM_ADDR_LEN,
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(void *)&e, sizeof(e));
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#ifdef CONFIG_SYS_EEPROM_BUS_NUM
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i2c_set_bus_num(bus);
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#endif
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#ifdef DEBUG
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show_eeprom();
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#endif
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has_been_read = (ret == 0) ? 1 : 0;
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return ret;
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}
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/**
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* update_crc - update the CRC
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*
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* This function should be called after each update to the EEPROM structure,
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* to make sure the CRC is always correct.
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*/
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static void update_crc(void)
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{
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u32 crc;
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crc = crc32(0, (void *)&e, sizeof(e) - 4);
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e.crc = cpu_to_be32(crc);
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}
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/**
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* prog_eeprom - write the EEPROM from memory
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*/
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static int prog_eeprom(void)
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{
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int ret = 0; /* shut up gcc */
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int i;
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void *p;
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#ifdef CONFIG_SYS_EEPROM_BUS_NUM
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unsigned int bus;
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#endif
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/* Set the reserved values to 0xFF */
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#ifdef CONFIG_SYS_I2C_EEPROM_NXID
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e.res_0 = 0xFF;
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memset(e.res_1, 0xFF, sizeof(e.res_1));
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#else
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memset(e.res_0, 0xFF, sizeof(e.res_0));
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#endif
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update_crc();
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#ifdef CONFIG_SYS_EEPROM_BUS_NUM
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bus = i2c_get_bus_num();
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i2c_set_bus_num(CONFIG_SYS_EEPROM_BUS_NUM);
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#endif
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for (i = 0, p = &e; i < sizeof(e); i += 8, p += 8) {
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ret = i2c_write(CONFIG_SYS_I2C_EEPROM_ADDR, i, CONFIG_SYS_I2C_EEPROM_ADDR_LEN,
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p, min((sizeof(e) - i), 8));
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if (ret)
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break;
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udelay(5000); /* 5ms write cycle timing */
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}
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#ifdef CONFIG_SYS_EEPROM_BUS_NUM
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i2c_set_bus_num(bus);
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#endif
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if (ret) {
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printf("Programming failed.\n");
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return -1;
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}
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printf("Programming passed.\n");
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return 0;
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}
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/**
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* h2i - converts hex character into a number
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*
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* This function takes a hexadecimal character (e.g. '7' or 'C') and returns
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* the integer equivalent.
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*/
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static inline u8 h2i(char p)
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{
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if ((p >= '0') && (p <= '9'))
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return p - '0';
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if ((p >= 'A') && (p <= 'F'))
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return (p - 'A') + 10;
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if ((p >= 'a') && (p <= 'f'))
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return (p - 'a') + 10;
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return 0;
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}
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/**
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* set_date - stores the build date into the EEPROM
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*
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* This function takes a pointer to a string in the format "YYMMDDhhmmss"
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* (2-digit year, 2-digit month, etc), converts it to a 6-byte BCD string,
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* and stores it in the build date field of the EEPROM local copy.
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*/
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static void set_date(const char *string)
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{
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unsigned int i;
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if (strlen(string) != 12) {
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printf("Usage: mac date YYMMDDhhmmss\n");
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return;
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}
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for (i = 0; i < 6; i++)
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e.date[i] = h2i(string[2 * i]) << 4 | h2i(string[2 * i + 1]);
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update_crc();
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}
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/**
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* set_mac_address - stores a MAC address into the EEPROM
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*
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* This function takes a pointer to MAC address string
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* (i.e."XX:XX:XX:XX:XX:XX", where "XX" is a two-digit hex number) and
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* stores it in one of the MAC address fields of the EEPROM local copy.
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*/
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static void set_mac_address(unsigned int index, const char *string)
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{
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char *p = (char *) string;
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unsigned int i;
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if (!string) {
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printf("Usage: mac <n> XX:XX:XX:XX:XX:XX\n");
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return;
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}
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for (i = 0; *p && (i < 6); i++) {
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e.mac[index][i] = simple_strtoul(p, &p, 16);
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if (*p == ':')
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p++;
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}
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update_crc();
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}
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int do_mac(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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char cmd;
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if (argc == 1) {
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show_eeprom();
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return 0;
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}
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cmd = argv[1][0];
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if (cmd == 'r') {
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read_eeprom();
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return 0;
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}
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if (cmd == 'i') {
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#ifdef CONFIG_SYS_I2C_EEPROM_NXID
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memcpy(e.id, "NXID", sizeof(e.id));
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e.version = 0;
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#else
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memcpy(e.id, "CCID", sizeof(e.id));
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#endif
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return 0;
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}
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if (!is_valid) {
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printf("Please read the EEPROM ('r') and/or set the ID ('i') first.\n");
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return 0;
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}
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if (argc == 2) {
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switch (cmd) {
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case 's': /* save */
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prog_eeprom();
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break;
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default:
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cmd_usage(cmdtp);
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break;
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}
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return 0;
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}
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/* We know we have at least one parameter */
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switch (cmd) {
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case 'n': /* serial number */
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memset(e.sn, 0, sizeof(e.sn));
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strncpy((char *)e.sn, argv[2], sizeof(e.sn) - 1);
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update_crc();
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break;
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case 'e': /* errata */
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#ifdef CONFIG_SYS_I2C_EEPROM_NXID
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memset(e.errata, 0, 5);
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strncpy((char *)e.errata, argv[2], 4);
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#else
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e.errata[0] = argv[2][0];
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e.errata[1] = argv[2][1];
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#endif
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update_crc();
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break;
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case 'd': /* date BCD format YYMMDDhhmmss */
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set_date(argv[2]);
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break;
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case 'p': /* MAC table size */
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e.mac_count = simple_strtoul(argv[2], NULL, 16);
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update_crc();
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break;
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case '0' ... '7': /* "mac 0" through "mac 7" */
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set_mac_address(cmd - '0', argv[2]);
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break;
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case 'h': /* help */
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default:
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cmd_usage(cmdtp);
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break;
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}
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return 0;
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}
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/**
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* mac_read_from_eeprom - read the MAC addresses from EEPROM
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*
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* This function reads the MAC addresses from EEPROM and sets the
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* appropriate environment variables for each one read.
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*
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* The environment variables are only set if they haven't been set already.
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* This ensures that any user-saved variables are never overwritten.
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*
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* This function must be called after relocation.
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*/
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int mac_read_from_eeprom(void)
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{
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unsigned int i;
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u32 crc;
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puts("EEPROM: ");
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if (read_eeprom()) {
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printf("Read failed.\n");
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return -1;
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}
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if (!is_valid) {
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printf("Invalid ID (%02x %02x %02x %02x)\n",
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e.id[0], e.id[1], e.id[2], e.id[3]);
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return -1;
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}
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crc = crc32(0, (void *)&e, sizeof(e) - 4);
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if (crc != be32_to_cpu(e.crc)) {
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printf("CRC mismatch (%08x != %08x)\n", crc, be32_to_cpu(e.crc));
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return -1;
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}
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for (i = 0; i < min(e.mac_count, MAX_NUM_PORTS); i++) {
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if (memcmp(&e.mac[i], "\0\0\0\0\0\0", 6) &&
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memcmp(&e.mac[i], "\xFF\xFF\xFF\xFF\xFF\xFF", 6)) {
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char ethaddr[18];
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char enetvar[9];
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sprintf(ethaddr, "%02X:%02X:%02X:%02X:%02X:%02X",
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e.mac[i][0],
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e.mac[i][1],
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e.mac[i][2],
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e.mac[i][3],
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e.mac[i][4],
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e.mac[i][5]);
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sprintf(enetvar, i ? "eth%daddr" : "ethaddr", i);
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/* Only initialize environment variables that are blank
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* (i.e. have not yet been set)
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*/
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if (!getenv(enetvar))
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setenv(enetvar, ethaddr);
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}
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}
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#ifdef CONFIG_SYS_I2C_EEPROM_NXID
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printf("%c%c%c%c v%u\n", e.id[0], e.id[1], e.id[2], e.id[3],
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be32_to_cpu(e.version));
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#else
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printf("%c%c%c%c\n", e.id[0], e.id[1], e.id[2], e.id[3]);
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#endif
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return 0;
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}
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#ifdef CONFIG_SYS_I2C_EEPROM_CCID
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/**
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* get_cpu_board_revision - get the CPU board revision on 85xx boards
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*
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* Read the EEPROM to determine the board revision.
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*
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* This function is called before relocation, so we need to read a private
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* copy of the EEPROM into a local variable on the stack.
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*
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* Also, we assume that CONFIG_SYS_EEPROM_BUS_NUM == CONFIG_SYS_SPD_BUS_NUM. The global
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* variable i2c_bus_num must be compile-time initialized to CONFIG_SYS_SPD_BUS_NUM,
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* so that the SPD code will work. This means that all pre-relocation I2C
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* operations can only occur on the CONFIG_SYS_SPD_BUS_NUM bus. So if
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* CONFIG_SYS_EEPROM_BUS_NUM != CONFIG_SYS_SPD_BUS_NUM, then we can't read the EEPROM when
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* this function is called. Oh well.
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*/
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unsigned int get_cpu_board_revision(void)
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{
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struct board_eeprom {
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u32 id; /* 0x00 - 0x03 EEPROM Tag 'CCID' */
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u8 major; /* 0x04 Board revision, major */
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u8 minor; /* 0x05 Board revision, minor */
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} be;
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i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0, CONFIG_SYS_I2C_EEPROM_ADDR_LEN,
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(void *)&be, sizeof(be));
|
|
|
|
if (be.id != (('C' << 24) | ('C' << 16) | ('I' << 8) | 'D'))
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return MPC85XX_CPU_BOARD_REV(0, 0);
|
|
|
|
if ((be.major == 0xff) && (be.minor == 0xff))
|
|
return MPC85XX_CPU_BOARD_REV(0, 0);
|
|
|
|
return MPC85XX_CPU_BOARD_REV(be.major, be.minor);
|
|
}
|
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#endif
|
|
|