Patchwork [U-Boot,07/10] km/common: move ivm functions from to ivm.c

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Submitter Holger Brunck
Date June 6, 2011, 8:22 a.m.
Message ID <1307348541-2466-8-git-send-email-holger.brunck@keymile.com>
Download mbox | patch
Permalink /patch/98820/
State Accepted
Commit 4f745bf4c8d8fa44ce640e551be974808a529889
Headers show

Comments

Holger Brunck - June 6, 2011, 8:22 a.m.
The file common.c grows in the past. So move the IVM specific
code into an ivm.c file.

Signed-off-by: Holger Brunck <holger.brunck@keymile.com>
Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>
cc: Heiko Schocher <hs@denx.de>
cc: Wolfgang Denk <wd@denx.de>
---
 board/keymile/common/common.c |  324 +--------------------------------------
 board/keymile/common/common.h |    1 +
 board/keymile/common/ivm.c    |  342 +++++++++++++++++++++++++++++++++++++++++
 board/keymile/km82xx/Makefile |    2 +-
 board/keymile/km83xx/Makefile |    2 +-
 board/keymile/km_arm/Makefile |    2 +-
 6 files changed, 352 insertions(+), 321 deletions(-)
 create mode 100644 board/keymile/common/ivm.c
Wolfgang Denk - July 27, 2011, 9:44 p.m.
Dear Holger Brunck,

In message <1307348541-2466-8-git-send-email-holger.brunck@keymile.com> you wrote:
> The file common.c grows in the past. So move the IVM specific
> code into an ivm.c file.
> 
> Signed-off-by: Holger Brunck <holger.brunck@keymile.com>
> Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>
> cc: Heiko Schocher <hs@denx.de>
> cc: Wolfgang Denk <wd@denx.de>
> ---
>  board/keymile/common/common.c |  324 +--------------------------------------
>  board/keymile/common/common.h |    1 +
>  board/keymile/common/ivm.c    |  342 +++++++++++++++++++++++++++++++++++++++++
>  board/keymile/km82xx/Makefile |    2 +-
>  board/keymile/km83xx/Makefile |    2 +-
>  board/keymile/km_arm/Makefile |    2 +-
>  6 files changed, 352 insertions(+), 321 deletions(-)
>  create mode 100644 board/keymile/common/ivm.c

Applied, thanks.

Best regards,

Wolfgang Denk

Patch

diff --git a/board/keymile/common/common.c b/board/keymile/common/common.c
index d8fcd39..010e969 100644
--- a/board/keymile/common/common.c
+++ b/board/keymile/common/common.c
@@ -2,6 +2,9 @@ 
  * (C) Copyright 2008
  * Heiko Schocher, DENX Software Engineering, hs@denx.de.
  *
+ * (C) Copyright 2011
+ * Holger Brunck, Keymile GmbH Hannover, holger.brunck@keymile.com
+ *
  * See file CREDITS for list of people who contributed to this
  * project.
  *
@@ -38,44 +41,13 @@ 
 #include <libfdt.h>
 #endif
 
-#include "../common/common.h"
+#include "common.h"
 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
 #include <i2c.h>
 
 static void i2c_write_start_seq(void);
-static int i2c_make_abort(void);
 DECLARE_GLOBAL_DATA_PTR;
 
-int ivm_calc_crc(unsigned char *buf, int len)
-{
-	const unsigned short crc_tab[16] = {
-		0x0000, 0xCC01, 0xD801, 0x1400,
-		0xF001, 0x3C00, 0x2800, 0xE401,
-		0xA001, 0x6C00, 0x7800, 0xB401,
-		0x5000, 0x9C01, 0x8801, 0x4400};
-
-	unsigned short crc     = 0;   /* final result */
-	unsigned short r1      = 0;   /* temp */
-	unsigned char  byte    = 0;   /* input buffer */
-	int	i;
-
-	/* calculate CRC from array data */
-	for (i = 0; i < len; i++) {
-		byte = buf[i];
-
-		/* lower 4 bits */
-		r1 = crc_tab[crc & 0xF];
-		crc = ((crc) >> 4) & 0x0FFF;
-		crc = crc ^ r1 ^ crc_tab[byte & 0xF];
-
-		/* upper 4 bits */
-		r1 = crc_tab[crc & 0xF];
-		crc = (crc >> 4) & 0x0FFF;
-		crc = crc ^ r1 ^ crc_tab[(byte >> 4) & 0xF];
-	}
-	return crc;
-}
-
 /*
  * Set Keymile specific environment variables
  * Currently only some memory layout variables are calculated here
@@ -111,290 +83,6 @@  int set_km_env(void)
 	return 0;
 }
 
-static int ivm_set_value(char *name, char *value)
-{
-	char tempbuf[256];
-
-	if (value != NULL) {
-		sprintf(tempbuf, "%s=%s", name, value);
-		return set_local_var(tempbuf, 0);
-	} else {
-		unset_local_var(name);
-	}
-	return 0;
-}
-
-static int ivm_get_value(unsigned char *buf, int len, char *name, int off,
-				int check)
-{
-	unsigned short	val;
-	unsigned char	valbuf[30];
-
-	if ((buf[off + 0] != buf[off + 2]) &&
-	    (buf[off + 2] != buf[off + 4])) {
-		printf("%s Error corrupted %s\n", __func__, name);
-		val = -1;
-	} else {
-		val = buf[off + 0] + (buf[off + 1] << 8);
-		if ((val == 0) && (check == 1))
-			val = -1;
-	}
-	sprintf((char *)valbuf, "%x", val);
-	ivm_set_value(name, (char *)valbuf);
-	return val;
-}
-
-#define INV_BLOCKSIZE		0x100
-#define INV_DATAADDRESS		0x21
-#define INVENTORYDATASIZE	(INV_BLOCKSIZE - INV_DATAADDRESS - 3)
-
-#define IVM_POS_SHORT_TEXT		0
-#define IVM_POS_MANU_ID			1
-#define IVM_POS_MANU_SERIAL		2
-#define IVM_POS_PART_NUMBER		3
-#define IVM_POS_BUILD_STATE		4
-#define IVM_POS_SUPPLIER_PART_NUMBER	5
-#define IVM_POS_DELIVERY_DATE		6
-#define IVM_POS_SUPPLIER_BUILD_STATE	7
-#define IVM_POS_CUSTOMER_ID		8
-#define IVM_POS_CUSTOMER_PROD_ID	9
-#define IVM_POS_HISTORY			10
-#define IVM_POS_SYMBOL_ONLY		11
-
-static char convert_char(char c)
-{
-	return (c < ' ' || c > '~') ? '.' : c;
-}
-
-static int ivm_findinventorystring(int type,
-					unsigned char* const string,
-					unsigned long maxlen,
-					unsigned char *buf)
-{
-	int xcode = 0;
-	unsigned long cr = 0;
-	unsigned long addr = INV_DATAADDRESS;
-	unsigned long size = 0;
-	unsigned long nr = type;
-	int stop = 0; 	/* stop on semicolon */
-
-	memset(string, '\0', maxlen);
-	switch (type) {
-		case IVM_POS_SYMBOL_ONLY:
-			nr = 0;
-			stop= 1;
-		break;
-		default:
-			nr = type;
-			stop = 0;
-	}
-
-	/* Look for the requested number of CR. */
-	while ((cr != nr) && (addr < INVENTORYDATASIZE)) {
-		if ((buf[addr] == '\r')) {
-			cr++;
-		}
-		addr++;
-	}
-
-	/*
-	 * the expected number of CR was found until the end of the IVM
-	 *  content --> fill string
-	 */
-	if (addr < INVENTORYDATASIZE) {
-		/* Copy the IVM string in the corresponding string */
-		for (; (buf[addr] != '\r')			&&
-			((buf[addr] != ';') ||  (!stop))	&&
-			(size < (maxlen - 1)			&&
-			(addr < INVENTORYDATASIZE)); addr++)
-		{
-			size += sprintf((char *)string + size, "%c",
-						convert_char (buf[addr]));
-		}
-
-		/*
-		 * copy phase is done: check if everything is ok. If not,
-		 * the inventory data is most probably corrupted: tell
-		 * the world there is a problem!
-		 */
-		if (addr == INVENTORYDATASIZE) {
-			xcode = -1;
-			printf("Error end of string not found\n");
-		} else if ((size >= (maxlen - 1)) &&
-			   (buf[addr] != '\r')) {
-			xcode = -1;
-			printf("string too long till next CR\n");
-		}
-	} else {
-		/*
-		 * some CR are missing...
-		 * the inventory data is most probably corrupted
-		 */
-		xcode = -1;
-		printf("not enough cr found\n");
-	}
-	return xcode;
-}
-
-#define GET_STRING(name, which, len) \
-	if (ivm_findinventorystring(which, valbuf, len, buf) == 0) { \
-		ivm_set_value(name, (char *)valbuf); \
-	}
-
-static int ivm_check_crc(unsigned char *buf, int block)
-{
-	unsigned long	crc;
-	unsigned long	crceeprom;
-
-	crc = ivm_calc_crc(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 2);
-	crceeprom = (buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 1] + \
-			buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 2] * 256);
-	if (crc != crceeprom) {
-		if (block == 0)
-			printf("Error CRC Block: %d EEprom: calculated: \
-			%lx EEprom: %lx\n", block, crc, crceeprom);
-		return -1;
-	}
-	return 0;
-}
-
-static int ivm_analyze_block2(unsigned char *buf, int len)
-{
-	unsigned char	valbuf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN];
-	unsigned long	count;
-
-	/* IVM_MacAddress */
-	sprintf((char *)valbuf, "%pM", buf);
-	ivm_set_value("IVM_MacAddress", (char *)valbuf);
-	/* if an offset is defined, add it */
-#if defined(CONFIG_PIGGY_MAC_ADRESS_OFFSET)
-	if (CONFIG_PIGGY_MAC_ADRESS_OFFSET > 0) {
-		unsigned long val = (buf[4] << 16) + (buf[5] << 8) + buf[6];
-
-		val += CONFIG_PIGGY_MAC_ADRESS_OFFSET;
-		buf[4] = (val >> 16) & 0xff;
-		buf[5] = (val >> 8) & 0xff;
-		buf[6] = val & 0xff;
-		sprintf((char *)valbuf, "%pM", buf);
-	}
-#endif
-	setenv((char *)"ethaddr", (char *)valbuf);
-
-	/* IVM_MacCount */
-	count = (buf[10] << 24) +
-		   (buf[11] << 16) +
-		   (buf[12] << 8)  +
-		    buf[13];
-	if (count == 0xffffffff)
-		count = 1;
-	sprintf((char *)valbuf, "%lx", count);
-	ivm_set_value("IVM_MacCount", (char *)valbuf);
-	return 0;
-}
-
-int ivm_analyze_eeprom(unsigned char *buf, int len)
-{
-	unsigned short	val;
-	unsigned char	valbuf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN];
-	unsigned char	*tmp;
-
-	if (ivm_check_crc(buf, 0) != 0)
-		return -1;
-
-	ivm_get_value(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN,
-			"IVM_BoardId", 0, 1);
-	val = ivm_get_value(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN,
-			"IVM_HWKey", 6, 1);
-	if (val != 0xffff) {
-		sprintf((char *)valbuf, "%x", ((val / 100) % 10));
-		ivm_set_value("IVM_HWVariant", (char *)valbuf);
-		sprintf((char *)valbuf, "%x", (val % 100));
-		ivm_set_value("IVM_HWVersion", (char *)valbuf);
-	}
-	ivm_get_value(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN,
-		"IVM_Functions", 12, 0);
-
-	GET_STRING("IVM_Symbol", IVM_POS_SYMBOL_ONLY, 8)
-	GET_STRING("IVM_DeviceName", IVM_POS_SHORT_TEXT, 64)
-	tmp = (unsigned char *) getenv("IVM_DeviceName");
-	if (tmp) {
-		int	len = strlen((char *)tmp);
-		int	i = 0;
-
-		while (i < len) {
-			if (tmp[i] == ';') {
-				ivm_set_value("IVM_ShortText",
-					(char *)&tmp[i + 1]);
-				break;
-			}
-			i++;
-		}
-		if (i >= len)
-			ivm_set_value("IVM_ShortText", NULL);
-	} else {
-		ivm_set_value("IVM_ShortText", NULL);
-	}
-	GET_STRING("IVM_ManufacturerID", IVM_POS_MANU_ID, 32)
-	GET_STRING("IVM_ManufacturerSerialNumber", IVM_POS_MANU_SERIAL, 20)
-	GET_STRING("IVM_ManufacturerPartNumber", IVM_POS_PART_NUMBER, 32)
-	GET_STRING("IVM_ManufacturerBuildState", IVM_POS_BUILD_STATE, 32)
-	GET_STRING("IVM_SupplierPartNumber", IVM_POS_SUPPLIER_PART_NUMBER, 32)
-	GET_STRING("IVM_DelieveryDate", IVM_POS_DELIVERY_DATE, 32)
-	GET_STRING("IVM_SupplierBuildState", IVM_POS_SUPPLIER_BUILD_STATE, 32)
-	GET_STRING("IVM_CustomerID", IVM_POS_CUSTOMER_ID, 32)
-	GET_STRING("IVM_CustomerProductID", IVM_POS_CUSTOMER_PROD_ID, 32)
-
-	if (ivm_check_crc(&buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN * 2], 2) != 0)
-		return 0;
-	ivm_analyze_block2(&buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN * 2],
-		CONFIG_SYS_IVM_EEPROM_PAGE_LEN);
-
-	return 0;
-}
-
-int ivm_read_eeprom(void)
-{
-#if defined(CONFIG_I2C_MUX)
-	I2C_MUX_DEVICE *dev = NULL;
-#endif
-	uchar i2c_buffer[CONFIG_SYS_IVM_EEPROM_MAX_LEN];
-	uchar	*buf;
-	unsigned dev_addr = CONFIG_SYS_IVM_EEPROM_ADR;
-	int ret;
-
-#if defined(CONFIG_I2C_MUX)
-	/* First init the Bus, select the Bus */
-#if defined(CONFIG_SYS_I2C_IVM_BUS)
-	dev = i2c_mux_ident_muxstring((uchar *)CONFIG_SYS_I2C_IVM_BUS);
-#else
-	buf = (unsigned char *) getenv("EEprom_ivm");
-	if (buf != NULL)
-		dev = i2c_mux_ident_muxstring(buf);
-#endif
-	if (dev == NULL) {
-		printf("Error couldnt add Bus for IVM\n");
-		return -1;
-	}
-	i2c_set_bus_num(dev->busid);
-#endif
-
-	buf = (unsigned char *) getenv("EEprom_ivm_addr");
-	if (buf != NULL)
-		dev_addr = simple_strtoul((char *)buf, NULL, 16);
-
-	/* add deblocking here */
-	i2c_make_abort();
-
-	ret = i2c_read(dev_addr, 0, 1, i2c_buffer,
-		CONFIG_SYS_IVM_EEPROM_MAX_LEN);
-	if (ret != 0) {
-		printf ("Error reading EEprom\n");
-		return -2;
-	}
-
-	return ivm_analyze_eeprom(i2c_buffer, CONFIG_SYS_IVM_EEPROM_MAX_LEN);
-}
-
 #if defined(CONFIG_SYS_I2C_INIT_BOARD)
 #define DELAY_ABORT_SEQ		62  /* @200kHz 9 clocks = 44us, 62us is ok */
 #define DELAY_HALF_PERIOD	(500 / (CONFIG_SYS_I2C_SPEED / 1000))
@@ -480,7 +168,7 @@  static void i2c_write_start_seq(void)
  * This I2C Deblocking mechanism was developed by Keymile in association
  * with Anatech and Atmel in 1998.
  */
-static int i2c_make_abort(void)
+int i2c_make_abort(void)
 {
 
 #if defined(CONFIG_HARD_I2C) && !defined(MACH_TYPE_KM_KIRKWOOD)
@@ -548,7 +236,7 @@  static void i2c_write_start_seq(void)
 	out_8(&dev->cr, (I2C_CR_MEN));
 }
 
-static int i2c_make_abort(void)
+int i2c_make_abort(void)
 {
 	struct fsl_i2c *dev;
 	dev = (struct fsl_i2c *) (CONFIG_SYS_IMMR + CONFIG_SYS_I2C_OFFSET);
diff --git a/board/keymile/common/common.h b/board/keymile/common/common.h
index cee24d4..edf6e3a 100644
--- a/board/keymile/common/common.h
+++ b/board/keymile/common/common.h
@@ -138,4 +138,5 @@  int fdt_get_node_and_value(void *blob,
 				void **var);
 
 int i2c_soft_read_pin(void);
+int i2c_make_abort(void);
 #endif /* __KEYMILE_COMMON_H */
diff --git a/board/keymile/common/ivm.c b/board/keymile/common/ivm.c
new file mode 100644
index 0000000..d0cb0d2
--- /dev/null
+++ b/board/keymile/common/ivm.c
@@ -0,0 +1,342 @@ 
+/*
+ * (C) Copyright 2011
+ * Holger Brunck, Keymile GmbH Hannover, holger.brunck@keymile.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 <hush.h>
+#include <i2c.h>
+#include "common.h"
+
+int ivm_calc_crc(unsigned char *buf, int len)
+{
+	const unsigned short crc_tab[16] = {
+		0x0000, 0xCC01, 0xD801, 0x1400,
+		0xF001, 0x3C00, 0x2800, 0xE401,
+		0xA001, 0x6C00, 0x7800, 0xB401,
+		0x5000, 0x9C01, 0x8801, 0x4400};
+
+	unsigned short crc     = 0;   /* final result */
+	unsigned short r1      = 0;   /* temp */
+	unsigned char  byte    = 0;   /* input buffer */
+	int	i;
+
+	/* calculate CRC from array data */
+	for (i = 0; i < len; i++) {
+		byte = buf[i];
+
+		/* lower 4 bits */
+		r1 = crc_tab[crc & 0xF];
+		crc = ((crc) >> 4) & 0x0FFF;
+		crc = crc ^ r1 ^ crc_tab[byte & 0xF];
+
+		/* upper 4 bits */
+		r1 = crc_tab[crc & 0xF];
+		crc = (crc >> 4) & 0x0FFF;
+		crc = crc ^ r1 ^ crc_tab[(byte >> 4) & 0xF];
+	}
+	return crc;
+}
+
+static int ivm_set_value(char *name, char *value)
+{
+	char tempbuf[256];
+
+	if (value != NULL) {
+		sprintf(tempbuf, "%s=%s", name, value);
+		return set_local_var(tempbuf, 0);
+	} else {
+		unset_local_var(name);
+	}
+	return 0;
+}
+
+static int ivm_get_value(unsigned char *buf, int len, char *name, int off,
+				int check)
+{
+	unsigned short	val;
+	unsigned char	valbuf[30];
+
+	if ((buf[off + 0] != buf[off + 2]) &&
+	    (buf[off + 2] != buf[off + 4])) {
+		printf("%s Error corrupted %s\n", __func__, name);
+		val = -1;
+	} else {
+		val = buf[off + 0] + (buf[off + 1] << 8);
+		if ((val == 0) && (check == 1))
+			val = -1;
+	}
+	sprintf((char *)valbuf, "%x", val);
+	ivm_set_value(name, (char *)valbuf);
+	return val;
+}
+
+#define INV_BLOCKSIZE		0x100
+#define INV_DATAADDRESS		0x21
+#define INVENTORYDATASIZE	(INV_BLOCKSIZE - INV_DATAADDRESS - 3)
+
+#define IVM_POS_SHORT_TEXT		0
+#define IVM_POS_MANU_ID			1
+#define IVM_POS_MANU_SERIAL		2
+#define IVM_POS_PART_NUMBER		3
+#define IVM_POS_BUILD_STATE		4
+#define IVM_POS_SUPPLIER_PART_NUMBER	5
+#define IVM_POS_DELIVERY_DATE		6
+#define IVM_POS_SUPPLIER_BUILD_STATE	7
+#define IVM_POS_CUSTOMER_ID		8
+#define IVM_POS_CUSTOMER_PROD_ID	9
+#define IVM_POS_HISTORY			10
+#define IVM_POS_SYMBOL_ONLY		11
+
+static char convert_char(char c)
+{
+	return (c < ' ' || c > '~') ? '.' : c;
+}
+
+static int ivm_findinventorystring(int type,
+					unsigned char *const string,
+					unsigned long maxlen,
+					unsigned char *buf)
+{
+	int xcode = 0;
+	unsigned long cr = 0;
+	unsigned long addr = INV_DATAADDRESS;
+	unsigned long size = 0;
+	unsigned long nr = type;
+	int stop = 0;	/* stop on semicolon */
+
+	memset(string, '\0', maxlen);
+	switch (type) {
+	case IVM_POS_SYMBOL_ONLY:
+		nr = 0;
+		stop = 1;
+	break;
+	default:
+		nr = type;
+		stop = 0;
+	}
+
+	/* Look for the requested number of CR. */
+	while ((cr != nr) && (addr < INVENTORYDATASIZE)) {
+		if ((buf[addr] == '\r'))
+			cr++;
+		addr++;
+	}
+
+	/*
+	 * the expected number of CR was found until the end of the IVM
+	 *  content --> fill string
+	 */
+	if (addr < INVENTORYDATASIZE) {
+		/* Copy the IVM string in the corresponding string */
+		for (; (buf[addr] != '\r')			&&
+			((buf[addr] != ';') ||  (!stop))	&&
+			(size < (maxlen - 1)			&&
+			(addr < INVENTORYDATASIZE)); addr++) {
+			size += sprintf((char *)string + size, "%c",
+						convert_char (buf[addr]));
+		}
+
+		/*
+		 * copy phase is done: check if everything is ok. If not,
+		 * the inventory data is most probably corrupted: tell
+		 * the world there is a problem!
+		 */
+		if (addr == INVENTORYDATASIZE) {
+			xcode = -1;
+			printf("Error end of string not found\n");
+		} else if ((size >= (maxlen - 1)) &&
+			   (buf[addr] != '\r')) {
+			xcode = -1;
+			printf("string too long till next CR\n");
+		}
+	} else {
+		/*
+		 * some CR are missing...
+		 * the inventory data is most probably corrupted
+		 */
+		xcode = -1;
+		printf("not enough cr found\n");
+	}
+	return xcode;
+}
+
+#define GET_STRING(name, which, len) \
+	if (ivm_findinventorystring(which, valbuf, len, buf) == 0) { \
+		ivm_set_value(name, (char *)valbuf); \
+	}
+
+static int ivm_check_crc(unsigned char *buf, int block)
+{
+	unsigned long	crc;
+	unsigned long	crceeprom;
+
+	crc = ivm_calc_crc(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 2);
+	crceeprom = (buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 1] + \
+			buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 2] * 256);
+	if (crc != crceeprom) {
+		if (block == 0)
+			printf("Error CRC Block: %d EEprom: calculated: \
+			%lx EEprom: %lx\n", block, crc, crceeprom);
+		return -1;
+	}
+	return 0;
+}
+
+static int ivm_analyze_block2(unsigned char *buf, int len)
+{
+	unsigned char	valbuf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN];
+	unsigned long	count;
+
+	/* IVM_MacAddress */
+	sprintf((char *)valbuf, "%pM", buf);
+	ivm_set_value("IVM_MacAddress", (char *)valbuf);
+	/* if an offset is defined, add it */
+#if defined(CONFIG_PIGGY_MAC_ADRESS_OFFSET)
+	if (CONFIG_PIGGY_MAC_ADRESS_OFFSET > 0) {
+		unsigned long val = (buf[4] << 16) + (buf[5] << 8) + buf[6];
+
+		val += CONFIG_PIGGY_MAC_ADRESS_OFFSET;
+		buf[4] = (val >> 16) & 0xff;
+		buf[5] = (val >> 8) & 0xff;
+		buf[6] = val & 0xff;
+		sprintf((char *)valbuf, "%pM", buf);
+	}
+#endif
+	setenv((char *)"ethaddr", (char *)valbuf);
+
+	/* IVM_MacCount */
+	count = (buf[10] << 24) +
+		   (buf[11] << 16) +
+		   (buf[12] << 8)  +
+		    buf[13];
+	if (count == 0xffffffff)
+		count = 1;
+	sprintf((char *)valbuf, "%lx", count);
+	ivm_set_value("IVM_MacCount", (char *)valbuf);
+	return 0;
+}
+
+int ivm_analyze_eeprom(unsigned char *buf, int len)
+{
+	unsigned short	val;
+	unsigned char	valbuf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN];
+	unsigned char	*tmp;
+
+	if (ivm_check_crc(buf, 0) != 0)
+		return -1;
+
+	ivm_get_value(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN,
+			"IVM_BoardId", 0, 1);
+	val = ivm_get_value(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN,
+			"IVM_HWKey", 6, 1);
+	if (val != 0xffff) {
+		sprintf((char *)valbuf, "%x", ((val / 100) % 10));
+		ivm_set_value("IVM_HWVariant", (char *)valbuf);
+		sprintf((char *)valbuf, "%x", (val % 100));
+		ivm_set_value("IVM_HWVersion", (char *)valbuf);
+	}
+	ivm_get_value(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN,
+		"IVM_Functions", 12, 0);
+
+	GET_STRING("IVM_Symbol", IVM_POS_SYMBOL_ONLY, 8)
+	GET_STRING("IVM_DeviceName", IVM_POS_SHORT_TEXT, 64)
+	tmp = (unsigned char *) getenv("IVM_DeviceName");
+	if (tmp) {
+		int	len = strlen((char *)tmp);
+		int	i = 0;
+
+		while (i < len) {
+			if (tmp[i] == ';') {
+				ivm_set_value("IVM_ShortText",
+					(char *)&tmp[i + 1]);
+				break;
+			}
+			i++;
+		}
+		if (i >= len)
+			ivm_set_value("IVM_ShortText", NULL);
+	} else {
+		ivm_set_value("IVM_ShortText", NULL);
+	}
+	GET_STRING("IVM_ManufacturerID", IVM_POS_MANU_ID, 32)
+	GET_STRING("IVM_ManufacturerSerialNumber", IVM_POS_MANU_SERIAL, 20)
+	GET_STRING("IVM_ManufacturerPartNumber", IVM_POS_PART_NUMBER, 32)
+	GET_STRING("IVM_ManufacturerBuildState", IVM_POS_BUILD_STATE, 32)
+	GET_STRING("IVM_SupplierPartNumber", IVM_POS_SUPPLIER_PART_NUMBER, 32)
+	GET_STRING("IVM_DelieveryDate", IVM_POS_DELIVERY_DATE, 32)
+	GET_STRING("IVM_SupplierBuildState", IVM_POS_SUPPLIER_BUILD_STATE, 32)
+	GET_STRING("IVM_CustomerID", IVM_POS_CUSTOMER_ID, 32)
+	GET_STRING("IVM_CustomerProductID", IVM_POS_CUSTOMER_PROD_ID, 32)
+
+	if (ivm_check_crc(&buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN * 2], 2) != 0)
+		return 0;
+	ivm_analyze_block2(&buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN * 2],
+		CONFIG_SYS_IVM_EEPROM_PAGE_LEN);
+
+	return 0;
+}
+
+int ivm_read_eeprom(void)
+{
+#if defined(CONFIG_I2C_MUX)
+	I2C_MUX_DEVICE *dev = NULL;
+#endif
+	uchar i2c_buffer[CONFIG_SYS_IVM_EEPROM_MAX_LEN];
+	uchar	*buf;
+	unsigned long dev_addr = CONFIG_SYS_IVM_EEPROM_ADR;
+	int ret;
+
+#if defined(CONFIG_I2C_MUX)
+	/* First init the Bus, select the Bus */
+#if defined(CONFIG_SYS_I2C_IVM_BUS)
+	dev = i2c_mux_ident_muxstring((uchar *)CONFIG_SYS_I2C_IVM_BUS);
+#else
+	buf = (unsigned char *) getenv("EEprom_ivm");
+	if (buf != NULL)
+		dev = i2c_mux_ident_muxstring(buf);
+#endif
+	if (dev == NULL) {
+		printf("Error couldnt add Bus for IVM\n");
+		return -1;
+	}
+	i2c_set_bus_num(dev->busid);
+#endif
+
+	buf = (unsigned char *) getenv("EEprom_ivm_addr");
+	if (buf != NULL) {
+		ret = strict_strtoul((char *)buf, 16, &dev_addr);
+		if (ret != 0)
+			return -3;
+	}
+
+	/* add deblocking here */
+	i2c_make_abort();
+
+	ret = i2c_read(dev_addr, 0, 1, i2c_buffer,
+		CONFIG_SYS_IVM_EEPROM_MAX_LEN);
+	if (ret != 0) {
+		printf("Error reading EEprom\n");
+		return -2;
+	}
+
+	return ivm_analyze_eeprom(i2c_buffer, CONFIG_SYS_IVM_EEPROM_MAX_LEN);
+}
diff --git a/board/keymile/km82xx/Makefile b/board/keymile/km82xx/Makefile
index a2b9da4..b9709d9 100644
--- a/board/keymile/km82xx/Makefile
+++ b/board/keymile/km82xx/Makefile
@@ -28,7 +28,7 @@  endif
 
 LIB	= $(obj)lib$(BOARD).o
 
-COBJS	:= $(BOARD).o ../common/common.o
+COBJS	:= $(BOARD).o ../common/common.o ../common/ivm.o
 
 SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(COBJS))
diff --git a/board/keymile/km83xx/Makefile b/board/keymile/km83xx/Makefile
index 2fa84f3..7bf64b4 100644
--- a/board/keymile/km83xx/Makefile
+++ b/board/keymile/km83xx/Makefile
@@ -28,7 +28,7 @@  endif
 
 LIB	= $(obj)lib$(BOARD).o
 
-COBJS	+= $(BOARD).o ../common/common.o
+COBJS	+= $(BOARD).o ../common/common.o ../common/ivm.o
 
 SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(COBJS))
diff --git a/board/keymile/km_arm/Makefile b/board/keymile/km_arm/Makefile
index 6bcfb25..4907030 100644
--- a/board/keymile/km_arm/Makefile
+++ b/board/keymile/km_arm/Makefile
@@ -29,7 +29,7 @@  endif
 
 LIB	= $(obj)lib$(BOARD).o
 
-COBJS	:= $(BOARD).o ../common/common.o
+COBJS	:= $(BOARD).o ../common/common.o ../common/ivm.o
 
 SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(COBJS))