Update Freescale sys_eeprom.c to handle CCID formats

Update the sys_eeprom.c file to handle both NXID and CCID EEPROM formats.  The
NXID format replaces the older CCID format, but it's important to support both
since most boards out there still use the CCID format.  This change is in
preparation for using one file to handle both formats.  This will also unify
EEPROM support for all Freescale 85xx and 86xx boards.

Also update the 86xx board header files to use the standard CFG_I2C_EEPROM_ADDR
instead of ID_EEPROM_ADDR.

Signed-off-by: Timur Tabi <timur@freescale.com>

1 files changed, 392 insertions, 206 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
+