/* * 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_EEPROM typedef 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(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", ethaddr[0]); setenv("eth1addr", ethaddr[1]); setenv("eth2addr", ethaddr[2]); setenv("eth3addr", 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(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(enetvar, i ? "eth%daddr" : "ethaddr", i); setenv(enetvar, ethaddr[i]); } } } return 0; } #endif /* CFG_ID_EEPROM */