diff options
| -rw-r--r-- | board/freescale/common/sys_eeprom.c | 598 | ||||
| -rw-r--r-- | include/configs/MPC8610HPCD.h | 8 | ||||
| -rw-r--r-- | include/configs/MPC8641HPCN.h | 8 |
3 files changed, 400 insertions, 214 deletions
diff --git a/board/freescale/common/sys_eeprom.c b/board/freescale/common/sys_eeprom.c index 8b13d06..d8631eb 100644 --- a/board/freescale/common/sys_eeprom.c +++ b/board/freescale/common/sys_eeprom.c @@ -1,7 +1,8 @@ /* - * Copyright 2006 Freescale Semiconductor + * Copyright 2006, 2008 Freescale Semiconductor * York Sun (yorksun@freescale.com) * Haiying Wang (haiying.wang@freescale.com) + * Timur Tabi (timur@freescale.com) * * See file CREDITS for list of people who contributed to this * project. @@ -27,258 +28,443 @@ #include <i2c.h> #include <linux/ctype.h> -typedef struct { - u8 id[4]; /* 0x0000 - 0x0003 EEPROM Tag */ - u8 sn[12]; /* 0x0004 - 0x000F Serial Number */ - u8 errata[5]; /* 0x0010 - 0x0014 Errata Level */ - u8 date[6]; /* 0x0015 - 0x001a Build Date */ - u8 res_0; /* 0x001b Reserved */ - u8 version[4]; /* 0x001c - 0x001f Version */ - u8 tempcal[8]; /* 0x0020 - 0x0027 Temperature Calibration Factors*/ - u8 tempcalsys[2]; /* 0x0028 - 0x0029 System Temperature Calibration Factors*/ - u8 res_1[22]; /* 0x0020 - 0x003f Reserved */ - u8 mac_size; /* 0x0040 Mac table size */ - u8 mac_flag; /* 0x0041 Mac table flags */ - u8 mac[8][6]; /* 0x0042 - 0x0071 Mac addresses */ - u32 crc; /* 0x0072 crc32 checksum */ -} EEPROM_data; - -static EEPROM_data mac_data; - -int mac_show(void) +#include "../common/eeprom.h" + +#if !defined(CFG_I2C_EEPROM_CCID) && !defined(CFG_I2C_EEPROM_NXID) +#error "Please define either CFG_I2C_EEPROM_CCID or CFG_I2C_EEPROM_NXID" +#endif + +/** + * static eeprom: EEPROM layout for CCID or NXID formats + * + * See application note AN3638 for details. + */ +static struct __attribute__ ((__packed__)) eeprom { +#ifdef CFG_I2C_EEPROM_CCID + u8 id[4]; /* 0x00 - 0x03 EEPROM Tag 'CCID' */ + u8 major; /* 0x04 Board revision, major */ + u8 minor; /* 0x05 Board revision, minor */ + u8 sn[10]; /* 0x06 - 0x0F Serial Number*/ + u8 errata[2]; /* 0x10 - 0x11 Errata Level */ + u8 date[6]; /* 0x12 - 0x17 Build Date */ + u8 res_0[40]; /* 0x18 - 0x3f Reserved */ + u8 mac_count; /* 0x40 Number of MAC addresses */ + u8 mac_flag; /* 0x41 MAC table flags */ + u8 mac[8][6]; /* 0x42 - 0x71 MAC addresses */ + u32 crc; /* 0x72 CRC32 checksum */ +#endif +#ifdef CFG_I2C_EEPROM_NXID + u8 id[4]; /* 0x00 - 0x03 EEPROM Tag 'NXID' */ + u8 sn[12]; /* 0x04 - 0x0F Serial Number */ + u8 errata[5]; /* 0x10 - 0x14 Errata Level */ + u8 date[6]; /* 0x15 - 0x1a Build Date */ + u8 res_0; /* 0x1b Reserved */ + u32 version; /* 0x1c - 0x1f NXID Version */ + u8 tempcal[8]; /* 0x20 - 0x27 Temperature Calibration Factors */ + u8 tempcalsys[2]; /* 0x28 - 0x29 System Temperature Calibration Factors */ + u8 tempcalflags; /* 0x2a Temperature Calibration Flags */ + u8 res_1[21]; /* 0x2b - 0x3f Reserved */ + u8 mac_count; /* 0x40 Number of MAC addresses */ + u8 mac_flag; /* 0x41 MAC table flags */ + u8 mac[8][6]; /* 0x42 - 0x71 MAC addresses */ + u32 crc; /* 0x72 CRC32 checksum */ +#endif +} e; + +/* Set to 1 if we've read EEPROM into memory */ +static int has_been_read = 0; + +#ifdef CFG_I2C_EEPROM_NXID +/* Is this a valid NXID EEPROM? */ +#define is_valid (*((u32 *)e.id) == (('N' << 24) | ('X' << 16) | ('I' << 8) | 'D')) +#endif + +#ifdef CFG_I2C_EEPROM_CCID +/* Is this a valid CCID EEPROM? */ +#define is_valid (*((u32 *)e.id) == (('C' << 24) | ('C' << 16) | ('I' << 8) | 'D')) +#endif + +/** + * show_eeprom - display the contents of the EEPROM + */ +static void show_eeprom(void) { int i; - u8 mac_size; - unsigned char ethaddr[8][18]; - unsigned char enetvar[32]; - - /* Show EEPROM tagID, - * always the four characters 'NXID'. - */ - printf("ID "); - for (i = 0; i < 4; i++) - printf("%c", mac_data.id[i]); - printf("\n"); - - /* Show Serial number, - * 0 to 11 charaters of errata information. - */ - printf("SN "); - for (i = 0; i < 12; i++) - printf("%c", mac_data.sn[i]); - printf("\n"); - - /* Show Errata Level, - * 0 to 4 characters of errata information. - */ - printf("Errata "); - for (i = 0; i < 5; i++) - printf("%c", mac_data.errata[i]); - printf("\n"); - - /* Show Build Date, - * BCD date values, as YYMMDDhhmmss. - */ - printf("Date 20%02x/%02x/%02x %02x:%02x:%02x\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]); - - /* Show MAC table size, - * Value from 0 to 7 indicating how many MAC - * addresses are stored in the system EEPROM. - */ - if((mac_data.mac_size > 0) && (mac_data.mac_size <= 8)) - mac_size = mac_data.mac_size; - else - mac_size = 8; /* Set the max size */ - printf("MACSIZE %x\n", mac_size); - - /* Show Mac addresses */ - for (i = 0; i < mac_size; 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]); - - sprintf((char *)enetvar, - i ? "eth%daddr" : "ethaddr", i); - setenv((char *)enetvar, (char *)ethaddr[i]); + unsigned int crc; + + /* EEPROM tag ID, either CCID or NXID */ +#ifdef CFG_I2C_EEPROM_NXID + printf("ID: %c%c%c%c v%u\n", e.id[0], e.id[1], e.id[2], e.id[3], + be32_to_cpu(e.version)); +#else + printf("ID: %c%c%c%c\n", e.id[0], e.id[1], e.id[2], e.id[3]); +#endif + + /* Serial number */ + printf("SN: %s\n", e.sn); + + /* Errata level. */ +#ifdef CFG_I2C_EEPROM_NXID + printf("Errata: %s\n", e.errata); +#else + printf("Errata: %c%c\n", + e.errata[0] ? e.errata[0] : '.', + e.errata[1] ? e.errata[1] : '.'); +#endif + + /* Build date, BCD date values, as YYMMDDhhmmss */ + printf("Build date: 20%02x/%02x/%02x %02x:%02x:%02x %s\n", + e.date[0], e.date[1], e.date[2], + e.date[3] & 0x7F, e.date[4], e.date[5], + e.date[3] & 0x80 ? "PM" : ""); + + /* Show MAC addresses */ + for (i = 0; i < min(e.mac_count, 8); i++) { + u8 *p = e.mac[i]; + printf("Eth%u: %02x:%02x:%02x:%02x:%02x:%02x\n", i, + p[0], p[1], p[2], p[3], p[4], p[5]); } - return 0; + crc = crc32(0, (void *)&e, sizeof(e) - 4); + + if (crc == be32_to_cpu(e.crc)) + printf("CRC: %08x\n", be32_to_cpu(e.crc)); + else + printf("CRC: %08x (should be %08x)\n", + be32_to_cpu(e.crc), crc); + +#ifdef DEBUG + printf("EEPROM dump: (0x%x bytes)\n", sizeof(e)); + for (i = 0; i < sizeof(e); i++) { + if ((i % 16) == 0) + printf("%02X: ", i); + printf("%02X ", ((u8 *)&e)[i]); + if (((i % 16) == 15) || (i == sizeof(e) - 1)) + printf("\n"); + } +#endif } -int mac_read(void) +/** + * read_eeprom - read the EEPROM into memory + */ +static int read_eeprom(void) { - int ret, length; - unsigned int crc = 0; - unsigned char dev = ID_EEPROM_ADDR, *data; + int ret; +#ifdef CFG_EEPROM_BUS_NUM + unsigned int bus; +#endif - length = sizeof(EEPROM_data); - ret = i2c_read(dev, 0, 1, (unsigned char *)(&mac_data), length); - if (ret) { - printf("Read failed.\n"); - return -1; - } + if (has_been_read) + return 0; - 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; +#ifdef CFG_EEPROM_BUS_NUM + bus = i2c_get_bus_num(); + i2c_set_bus_num(CFG_EEPROM_BUS_NUM); +#endif + + ret = i2c_read(CFG_I2C_EEPROM_ADDR, 0, CFG_I2C_EEPROM_ADDR_LEN, + (void *)&e, sizeof(e)); + +#ifdef CFG_EEPROM_BUS_NUM + i2c_set_bus_num(bus); +#endif + +#ifdef DEBUG + show_eeprom(); +#endif + + has_been_read = (ret == 0) ? 1 : 0; + + return ret; } -int mac_prog(void) +/** + * prog_eeprom - write the EEPROM from memory + */ +static int prog_eeprom(void) { int ret, i, length; - unsigned int crc = 0; - unsigned char dev = ID_EEPROM_ADDR, *ptr; - unsigned char *eeprom_data = (unsigned char *)(&mac_data); - - mac_data.res_0 = 0; - memset((void *)mac_data.res_1, 0, sizeof(mac_data.res_1)); - - 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, min((length - i),8)); - udelay(5000); /* 5ms write cycle timing */ + unsigned int crc; + void *p; +#ifdef CFG_EEPROM_BUS_NUM + unsigned int bus; +#endif + + /* Set the reserved values to 0xFF */ +#ifdef CFG_I2C_EEPROM_NXID + e.res_0 = 0xFF; + memset(e.res_1, 0xFF, sizeof(e.res_1)); +#else + memset(e.res_0, 0xFF, sizeof(e.res_0)); +#endif + + length = sizeof(e); + crc = crc32(0, (void *)&e, length - 4); + e.crc = cpu_to_be32(crc); + +#ifdef CFG_EEPROM_BUS_NUM + bus = i2c_get_bus_num(); + i2c_set_bus_num(CFG_EEPROM_BUS_NUM); +#endif + + for (i = 0, p = &e; i < length; i += 8, p += 8) { + ret = i2c_write(CFG_I2C_EEPROM_ADDR, i, CFG_I2C_EEPROM_ADDR_LEN, + p, min((length - i), 8)); if (ret) break; + udelay(5000); /* 5ms write cycle timing */ } + +#ifdef CFG_EEPROM_BUS_NUM + i2c_set_bus_num(bus); +#endif + if (ret) { printf("Programming failed.\n"); return -1; - } else { - printf("Programming %d bytes. Reading back ...\n", length); - mac_read(); } + + printf("Programming passed.\n"); return 0; } -int do_mac(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) +/** + * h2i - converts hex character into a number + * + * This function takes a hexadecimal character (e.g. '7' or 'C') and returns + * the integer equivalent. + */ +static inline u8 h2i(char p) +{ + if ((p >= '0') && (p <= '9')) + return p - '0'; + + if ((p >= 'A') && (p <= 'F')) + return (p - 'A') + 10; + + if ((p >= 'a') && (p <= 'f')) + return (p - 'a') + 10; + + return 0; +} + +/** + * set_date - stores the build date into the EEPROM + * + * This function takes a pointer to a string in the format "YYMMDDhhmmss" + * (2-digit year, 2-digit month, etc), converts it to a 6-byte BCD string, + * and stores it in the build date field of the EEPROM local copy. + */ +static void set_date(const char *string) +{ + unsigned int i; + + if (strlen(string) != 12) { + printf("Usage: mac date YYMMDDhhmmss\n"); + return; + } + + for (i = 0; i < 6; i++) + e.date[i] = h2i(string[2 * i]) << 4 | h2i(string[2 * i + 1]); +} + +/** + * set_mac_address - stores a MAC address into the EEPROM + * + * This function takes a pointer to MAC address string + * (i.e."XX:XX:XX:XX:XX:XX", where "XX" is a two-digit hex number) and + * stores it in one of the MAC address fields of the EEPROM local copy. + */ +static void set_mac_address(unsigned int index, const char *string) +{ + char *p = (char *) string; + unsigned int i; + + if (!string) { + printf("Usage: mac <n> XX:XX:XX:XX:XX:XX\n"); + return; + } + + for (i = 0; *p && (i < 6); i++) { + e.mac[index][i] = simple_strtoul(p, &p, 16); + if (*p == ':') + p++; + } +} + +int do_mac(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) { int i; - char cmd = 's'; - unsigned long long mac_val; + char cmd; - if (i2c_probe(ID_EEPROM_ADDR) != 0) - return -1; + if (argc == 1) { + show_eeprom(); + return 0; + } + + cmd = argv[1][0]; + + if (cmd == 'r') { + read_eeprom(); + return 0; + } - if (argc > 1) { - cmd = argv[1][0]; + if ((cmd == 'i') && (argc > 2)) { + for (i = 0; i < 4; i++) + e.id[i] = argv[2][i]; + return 0; + } + + if (!is_valid) { + printf("Please read the EEPROM ('r') and/or set the ID ('i') first.\n"); + return 0; + } + + if (argc == 2) { 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]; - } + prog_eeprom(); break; - case 'e': /* errata */ - for (i = 0; i < 5; i++) { - mac_data.errata[i] = argv[2][i]; - } - break; - case 'd': /* date */ - mac_val = simple_strtoull(argv[2], NULL, 16); - for (i = 0; i < 6; i++) { - mac_data.date[i] = (mac_val >> (40 - 8 * i)); - } - break; - case 'p': /* mac table size */ - mac_data.mac_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; + } + + /* We know we have at least one parameter */ + + switch (cmd) { + case 'n': /* serial number */ + memset(e.sn, 0, sizeof(e.sn)); + strncpy((char *)e.sn, argv[2], sizeof(e.sn) - 1); + break; + case 'e': /* errata */ +#ifdef CFG_I2C_EEPROM_NXID + memset(e.errata, 0, 5); + strncpy((char *)e.errata, argv[2], 4); +#else + e.errata[0] = argv[2][0]; + e.errata[1] = argv[2][1]; +#endif + break; + case 'd': /* date BCD format YYMMDDhhmmss */ + set_date(argv[2]); + break; + case 'p': /* MAC table size */ + e.mac_count = simple_strtoul(argv[2], NULL, 16); + break; + case '0' ... '7': /* "mac 0" through "mac 7" */ + set_mac_address(cmd - '0', argv[2]); + break; + case 'h': /* help */ + default: + printf("Usage:\n%s\n", cmdtp->usage); + break; } + return 0; } +/** + * mac_read_from_eeprom - read the MAC addresses from EEPROM + * + * This function reads the MAC addresses from EEPROM and sets the + * appropriate environment variables for each one read. + * + * The environment variables are only set if they haven't been set already. + * This ensures that any user-saved variables are never overwritten. + * + * This function must be called after relocation. + */ 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)) { + unsigned int i; + + if (read_eeprom()) { printf("Read failed.\n"); return -1; } - data = (unsigned char *)(&mac_data); - crc = crc32(crc, data, length - 4); - if (crc != mac_data.crc) { + if (!is_valid) { + printf("Invalid ID (%02x %02x %02x %02x)\n", e.id[0], e.id[1], e.id[2], e.id[3]); 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]); - } + } + + if (be32_to_cpu(e.crc) != 0xFFFFFFFF) { + u32 crc = crc32(0, (void *)&e, sizeof(e) - 4); + + if (crc != be32_to_cpu(e.crc)) { + printf("CRC mismatch (%08x != %08x).\n", crc, + be32_to_cpu(e.crc)); + return -1; } } + + for (i = 0; i < min(4, e.mac_count); i++) { + if (memcmp(&e.mac[i], "\0\0\0\0\0\0", 6) && + memcmp(&e.mac[i], "\xFF\xFF\xFF\xFF\xFF\xFF", 6)) { + char ethaddr[18]; + char enetvar[9]; + + sprintf(ethaddr, "%02X:%02X:%02X:%02X:%02X:%02X", + e.mac[i][0], + e.mac[i][1], + e.mac[i][2], + e.mac[i][3], + e.mac[i][4], + e.mac[i][5]); + sprintf(enetvar, i ? "eth%daddr" : "ethaddr", i); + /* Only initialize environment variables that are blank + * (i.e. have not yet been set) + */ + if (!getenv(enetvar)) + setenv(enetvar, ethaddr); + } + } + return 0; } + +#ifdef CFG_I2C_EEPROM_CCID + +/** + * get_cpu_board_revision - get the CPU board revision on 85xx boards + * + * Read the EEPROM to determine the board revision. + * + * This function is called before relocation, so we need to read a private + * copy of the EEPROM into a local variable on the stack. + * + * Also, we assume that CFG_EEPROM_BUS_NUM == CFG_SPD_BUS_NUM. The global + * variable i2c_bus_num must be compile-time initialized to CFG_SPD_BUS_NUM, + * so that the SPD code will work. This means that all pre-relocation I2C + * operations can only occur on the CFG_SPD_BUS_NUM bus. So if + * CFG_EEPROM_BUS_NUM != CFG_SPD_BUS_NUM, then we can't read the EEPROM when + * this function is called. Oh well. + */ +unsigned int get_cpu_board_revision(void) +{ + struct board_eeprom { + u32 id; /* 0x00 - 0x03 EEPROM Tag 'CCID' */ + u8 major; /* 0x04 Board revision, major */ + u8 minor; /* 0x05 Board revision, minor */ + } be; + + i2c_read(CFG_I2C_EEPROM_ADDR, 0, CFG_I2C_EEPROM_ADDR_LEN, + (void *)&be, sizeof(be)); + + if (be.id != (('C' << 24) | ('C' << 16) | ('I' << 8) | 'D')) + 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(e.major, e.minor); +} + +#endif + diff --git a/include/configs/MPC8610HPCD.h b/include/configs/MPC8610HPCD.h index 98ae34c..06899b1 100644 --- a/include/configs/MPC8610HPCD.h +++ b/include/configs/MPC8610HPCD.h @@ -140,11 +140,11 @@ #endif #endif -#define CFG_ID_EEPROM -#ifdef CFG_ID_EEPROM #define CONFIG_ID_EEPROM -#endif -#define ID_EEPROM_ADDR 0x57 +#define CFG_I2C_EEPROM_NXID +#define CFG_ID_EEPROM +#define CFG_I2C_EEPROM_ADDR 0x57 +#define CFG_I2C_EEPROM_ADDR_LEN 1 #define CFG_FLASH_BASE 0xf0000000 /* start of FLASH 128M */ diff --git a/include/configs/MPC8641HPCN.h b/include/configs/MPC8641HPCN.h index 455e154..cd35494 100644 --- a/include/configs/MPC8641HPCN.h +++ b/include/configs/MPC8641HPCN.h @@ -152,11 +152,11 @@ extern unsigned long get_board_sys_clk(unsigned long dummy); #define CFG_DDR_CS5_BNDS 0x00000FFF /* Not done */ #endif -#define CFG_ID_EEPROM 1 -#ifdef CFG_ID_EEPROM #define CONFIG_ID_EEPROM -#endif -#define ID_EEPROM_ADDR 0x57 +#define CFG_I2C_EEPROM_NXID +#define CFG_ID_EEPROM +#define CFG_I2C_EEPROM_ADDR 0x57 +#define CFG_I2C_EEPROM_ADDR_LEN 1 /* * In MPC8641HPCN, allocate 16MB flash spaces at fe000000 and ff000000. |