/* * Copyright 2006 Freescale Semiconductor * York Sun (yorksun@freescale.com) * Haiying Wang (haiying.wang@freescale.com) * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */#include <common.h>#include <command.h>#include <i2c.h>#include <linux/ctype.h>#ifdef CFG_ID_EEPROMtypedef struct {	unsigned char id[4];		/* 0x0000 - 0x0003 */	unsigned char sn[12];		/* 0x0004 - 0x000F */	unsigned char errata[5];	/* 0x0010 - 0x0014 */	unsigned char date[7];		/* 0x0015 - 0x001a */	unsigned char res_1[37];	/* 0x001b - 0x003f */	unsigned char tab_size;		/* 0x0040 */	unsigned char tab_flag;		/* 0x0041 */	unsigned char mac[8][6];	/* 0x0042 - 0x0071 */	unsigned char res_2[126];	/* 0x0072 - 0x00ef */	unsigned int crc;		/* 0x00f0 - 0x00f3 crc32 checksum */} EEPROM_data;static EEPROM_data mac_data;int mac_show(void){	int i;	unsigned char ethaddr[8][18];	printf("ID %c%c%c%c\n",	       mac_data.id[0],	       mac_data.id[1],	       mac_data.id[2],	       mac_data.id[3]);	printf("Errata %c%c%c%c%c\n",	       mac_data.errata[0],	       mac_data.errata[1],	       mac_data.errata[2],	       mac_data.errata[3],	       mac_data.errata[4]);	printf("Date %c%c%c%c%c%c%c\n",	       mac_data.date[0],	       mac_data.date[1],	       mac_data.date[2],	       mac_data.date[3],	       mac_data.date[4],	       mac_data.date[5],	       mac_data.date[6]);	for (i = 0; i < 8; i++) {		sprintf((char *)ethaddr[i],			"%02x:%02x:%02x:%02x:%02x:%02x",			mac_data.mac[i][0],			mac_data.mac[i][1],			mac_data.mac[i][2],			mac_data.mac[i][3],			mac_data.mac[i][4],			mac_data.mac[i][5]);		printf("MAC %d %s\n", i, ethaddr[i]);	}	setenv("ethaddr",  (char *)ethaddr[0]);	setenv("eth1addr", (char *)ethaddr[1]);	setenv("eth2addr", (char *)ethaddr[2]);	setenv("eth3addr", (char *)ethaddr[3]);	return 0;}int mac_read(void){	int ret, length;	unsigned int crc = 0;	unsigned char dev = ID_EEPROM_ADDR, *data;	length = sizeof(EEPROM_data);	ret = i2c_read(dev, 0, 1, (unsigned char *)(&mac_data), length);	if (ret) {		printf("Read failed.\n");		return -1;	}	data = (unsigned char *)(&mac_data);	printf("Check CRC on reading ...");	crc = crc32(crc, data, length - 4);	if (crc != mac_data.crc) {		printf("CRC checksum is invalid, in EEPROM CRC is %x, calculated CRC is %x\n",		     mac_data.crc, crc);		return -1;	} else {		printf("CRC OK\n");		mac_show();	}	return 0;}int mac_prog(void){	int ret, i, length;	unsigned int crc = 0;	unsigned char dev = ID_EEPROM_ADDR, *ptr;	unsigned char *eeprom_data = (unsigned char *)(&mac_data);	for (i = 0; i < sizeof(mac_data.res_1); i++)		mac_data.res_1[i] = 0;	for (i = 0; i < sizeof(mac_data.res_2); i++)		mac_data.res_2[i] = 0;	length = sizeof(EEPROM_data);	crc = crc32(crc, eeprom_data, length - 4);	mac_data.crc = crc;	for (i = 0, ptr = eeprom_data; i < length; i += 8, ptr += 8) {		ret =		    i2c_write(dev, i, 1, ptr,			      (length - i) < 8 ? (length - i) : 8);		udelay(5000);	/* 5ms write cycle timing */		if (ret)			break;	}	if (ret) {		printf("Programming failed.\n");		return -1;	} else {		printf("Programming %d bytes. Reading back ...\n", length);		mac_read();	}	return 0;}int do_mac(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]){	int i;	char cmd = 's';	unsigned long long mac_val;	if (i2c_probe(ID_EEPROM_ADDR) != 0)		return -1;	if (argc > 1) {		cmd = argv[1][0];		switch (cmd) {		case 'r':	/* display */			mac_read();			break;		case 's':	/* save */			mac_prog();			break;		case 'i':	/* id */			for (i = 0; i < 4; i++) {				mac_data.id[i] = argv[2][i];			}			break;		case 'n':	/* serial number */			for (i = 0; i < 12; i++) {				mac_data.sn[i] = argv[2][i];			}			break;		case 'e':	/* errata */			for (i = 0; i < 5; i++) {				mac_data.errata[i] = argv[2][i];			}			break;		case 'd':	/* date */			for (i = 0; i < 7; i++) {				mac_data.date[i] = argv[2][i];			}			break;		case 'p':	/* number of ports */			mac_data.tab_size =			    (unsigned char)simple_strtoul(argv[2], NULL, 16);			break;		case '0':	/* mac 0 */		case '1':	/* mac 1 */		case '2':	/* mac 2 */		case '3':	/* mac 3 */		case '4':	/* mac 4 */		case '5':	/* mac 5 */		case '6':	/* mac 6 */		case '7':	/* mac 7 */			mac_val = simple_strtoull(argv[2], NULL, 16);			for (i = 0; i < 6; i++) {				mac_data.mac[cmd - '0'][i] =				    *((unsigned char *)				      (((unsigned int)(&mac_val)) + i + 2));			}			break;		case 'h':	/* help */		default:			printf("Usage:\n%s\n", cmdtp->usage);			break;		}	} else {		mac_show();	}	return 0;}int mac_read_from_eeprom(void){	int length, i;	unsigned char dev = ID_EEPROM_ADDR;	unsigned char *data;	unsigned char ethaddr[4][18];	unsigned char enetvar[32];	unsigned int crc = 0;	length = sizeof(EEPROM_data);	if (i2c_read(dev, 0, 1, (unsigned char *)(&mac_data), length)) {		printf("Read failed.\n");		return -1;	}	data = (unsigned char *)(&mac_data);	crc = crc32(crc, data, length - 4);	if (crc != mac_data.crc) {		return -1;	} else {		for (i = 0; i < 4; i++) {			if (memcmp(&mac_data.mac[i], "\0\0\0\0\0\0", 6)) {				sprintf((char *)ethaddr[i],					"%02x:%02x:%02x:%02x:%02x:%02x",					mac_data.mac[i][0],					mac_data.mac[i][1],					mac_data.mac[i][2],					mac_data.mac[i][3],					mac_data.mac[i][4],					mac_data.mac[i][5]);				sprintf((char *)enetvar,					i ? "eth%daddr" : "ethaddr",					i);				setenv((char *)enetvar, (char *)ethaddr[i]);			}		}	}	return 0;}#endif /* CFG_ID_EEPROM */