[U-Boot] [PATCH] mgcoge, mgsuvd: added support for the IVM EEprom.

[Heiko Schocher <hs@denx.de>]

The EEprom contains some Manufacturerinformation,
which are read from u-boot at boot time, and saved
in same Environmentvars.

Signed-off-by: Heiko Schocher <hs@denx.de>
---
 board/keymile/common/common.c |  285 +++++++++++++++++++++++++++++++++++++++++
 include/configs/mgcoge.h      |    5 +
 include/configs/mgsuvd.h      |    5 +
 lib_ppc/board.c               |    6 +
 4 files changed, 301 insertions(+), 0 deletions(-)

diff --git a/board/keymile/common/common.c b/board/keymile/common/common.c
index a6ed379..25c5900 100644
--- a/board/keymile/common/common.c
+++ b/board/keymile/common/common.c
@@ -38,6 +38,291 @@
 extern int i2c_mgsuvd_read (void);
 #endif

+int ivm_calc_crc (unsigned char *buf, int len)
+{
+	const unsigned short cCrc16Table[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 = cCrc16Table[crc & 0xF];
+		crc = ((crc) >> 4) & 0x0FFF;
+		crc = crc ^ r1 ^ cCrc16Table[byte & 0xF];
+
+		/* upper 4 bits */
+		r1 = cCrc16Table[crc & 0xF];
+		crc = (crc >> 4) & 0x0FFF;
+		crc = crc ^ r1 ^ cCrc16Table[(byte >> 4) & 0xF];
+	}
+	return crc;
+}
+
+
+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", __FUNCTION__, name);
+		val = -1;
+	} else {
+		val = buf[off + 0] + (buf[off + 1] << 8);
+		if ((val == 0) && (check == 1))
+			val = -1;
+	}
+	sprintf ((char *)valbuf, "%x", val);
+	setenv (name, (char *)valbuf);
+	return val;
+}
+
+#define BTChar	unsigned char
+
+#define INVENTORYBLOCKSIZE	0x100
+#define INVENTORYDATAADDRESS	0x21
+#define INVENTORYDATASIZE	(INVENTORYBLOCKSIZE - INVENTORYDATAADDRESS - 3)
+typedef  enum {
+	eSymbolShortText	=  0, /* Symbol;ShortText */
+	eManufId		=  1, /* ManufacturerId */
+	eManufSerialNumber	=  2, /* ManufacturerSerialNumber */
+	eManufPartNumber	=  3, /* ManufacturerPartNumber */
+	eManufBuildState	=  4, /* ManufacturerBuildState */
+	eSuplierPartNumber	=  5, /* SuplierPartNumber */
+	eDeliveryDate		=  6, /* DeliveryDate */
+	eSupplierBuildState	=  7, /* SupplierBuildState */
+	eCustomerId		=  8, /* CustomerId */
+	eCustomerProdId		=  9, /* CustomerProdId */
+	eChangeHistory		= 10, /* ChangeHistory  (not used) */
+	eSymbolOnly
+} InventoryData;
+
+static char toAscii(char c)
+{
+	return (c<' ' || c>'~') ? '.' : c;
+}
+
+static int ivm_findInventoryString (InventoryData aType, BTChar* const aString,
+		unsigned long maxLength, unsigned char *buf)
+{
+	int xcode = 0;
+	BTChar cr = '\r';
+	/* Semikolon char */
+	BTChar sc = ';';
+	/* Number of CR found */
+	unsigned long crFound = 0;
+	/* Current address */
+	unsigned long address = INVENTORYDATAADDRESS;
+	/* String length */
+	unsigned long strSize = 0;
+	/* Number of CR to skip */
+	unsigned long nbrOfCR = aType;
+	/* Semicolon to end */
+	int endWithSemikolon = 0;
+
+	/* initialise string */
+	memset(aString, '\0', maxLength);
+
+	switch (aType)
+	{
+		case eSymbolOnly:
+			nbrOfCR = 0;
+			endWithSemikolon = 1;
+		break;
+		default:
+			nbrOfCR = aType;
+			endWithSemikolon = 0;
+	}
+
+	/* Look for the requested number of CR. */
+	while ((crFound != nbrOfCR) && (address < INVENTORYDATASIZE))
+	{
+		if ((buf[address] == cr)) {
+			crFound++;
+		}
+		address++;
+	}
+
+	/* the expected number of CR was found until the end of the IVM
+	 *  content --> fill string */
+	if (address < INVENTORYDATASIZE)
+	{
+		/* Copy the IVM string in the corresponding string */
+		for (; (buf[address] != cr)			&&   /* not cr found */
+			((buf[address] != sc) ||  (!endWithSemikolon))  &&   /* not semikolon found */
+			(strSize < (maxLength-1)			&&
+			(address < INVENTORYDATASIZE)); address++)
+		{
+			strSize += sprintf((char *)aString + strSize, "%c", toAscii(buf[address]));
+		}
+
+		/* 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 (address == INVENTORYDATASIZE)
+		{
+			xcode = -1;
+			printf ("Error end of string not found\n");
+		} else if ((strSize >= (maxLength-1)) && (buf[address] != cr)) {
+			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) { \
+		setenv (name, (char *)valbuf); \
+	}
+
+static int ivm_check_crc (unsigned char *buf, int block)
+{
+	unsigned long	crc;
+	unsigned long	crceeprom;
+
+	crc = ivm_calc_crc (buf, CFG_IVM_EEPROM_PAGE_LEN - 2);
+	crceeprom = (buf[CFG_IVM_EEPROM_PAGE_LEN - 1] + \
+			buf[CFG_IVM_EEPROM_PAGE_LEN - 2] * 256);
+	if (crc != crceeprom) {
+		printf ("Error CRC Block: %d EEprom: calculated: %lx EEprom: %lx\n",
+			block, crc, crceeprom);
+		return -1;
+	}
+	return 0;
+}
+
+static int ivm_analyse_block2 (unsigned char *buf, int len)
+{
+	unsigned char	valbuf[CFG_IVM_EEPROM_PAGE_LEN];
+	unsigned long	nbrsAdrs;
+
+	/* IVM_MacAddress */
+	sprintf ((char *)valbuf, "%02X:%02X:%02X:%02X:%02X:%02X",
+			buf[1],
+			buf[2],
+			buf[3],
+			buf[4],
+			buf[5],
+			buf[6]);	
+	setenv ("IVM_MacAddress", (char *)valbuf);
+	if (getenv ("ethaddr") == NULL)
+		setenv ((char *)"ethaddr", (char *)valbuf);
+	/* IVM_MacCount */
+	nbrsAdrs = (buf[10] << 24) +
+		   (buf[11] << 16) +
+		   (buf[12] << 8)  +
+		    buf[13];
+	if (nbrsAdrs == 0xffffffff)
+		nbrsAdrs = 1;
+	sprintf ((char *)valbuf, "%lx", nbrsAdrs);
+	setenv ("IVM_MacCount", (char *)valbuf);
+	return 0;
+}
+
+int ivm_analyse_eeprom (unsigned char *buf, int len)
+{
+	unsigned short	val;
+	unsigned char	valbuf[CFG_IVM_EEPROM_PAGE_LEN];
+	unsigned char	*tmp;
+
+	/* used Code from ivm/src/devsrv_baseproductdata.cpp */
+	if (ivm_check_crc (buf, 0) != 0)
+		return -1;
+
+	ivm_get_value (buf, CFG_IVM_EEPROM_PAGE_LEN, "IVM_BoardId", 0, 1);
+	val = ivm_get_value (buf, CFG_IVM_EEPROM_PAGE_LEN, "IVM_HWKey", 6, 1);
+	if (val != 0xffff) {
+		sprintf ((char *)valbuf, "%x", ((val /100) % 10));
+		setenv ("IVM_HWVariant", (char *)valbuf);
+		sprintf ((char *)valbuf, "%x", (val % 100));
+		setenv ("IVM_HWVersion", (char *)valbuf);
+	}
+	ivm_get_value (buf, CFG_IVM_EEPROM_PAGE_LEN, "IVM_Functions", 12, 0);
+
+	GET_STRING("IVM_Symbol", eSymbolOnly, 8)
+	GET_STRING("IVM_DeviceName", eSymbolShortText, 64)
+	tmp = (unsigned char *) getenv("IVM_DeviceName");
+	if (tmp) {
+		int	len = strlen ((char *)tmp);
+		int	i = 0;
+
+		while (i < len) {
+			if (tmp[i] == ';') {
+				setenv ("IVM_ShortText", (char *)&tmp[i + 1]);
+				break;
+			}
+			i++;
+		}
+		if (i >= len)
+			setenv ("IVM_ShortText", NULL);
+	} else {
+		setenv ("IVM_ShortText", NULL);
+	}
+	GET_STRING("IVM_ManufacturerID", eManufId, 32)
+	GET_STRING("IVM_ManufacturerSerialNumber", eManufSerialNumber, 20)
+	GET_STRING("IVM_ManufacturerPartNumber", eManufPartNumber, 32)
+	GET_STRING("IVM_ManufacturerBuildState", eManufBuildState, 32)
+	GET_STRING("IVM_SupplierPartNumber", eSuplierPartNumber, 32)
+	GET_STRING("IVM_DelieveryDate", eDeliveryDate, 32)
+	GET_STRING("IVM_SupplierBuildState", eSupplierBuildState, 32)
+	GET_STRING("IVM_CustomerID", eCustomerId, 32)
+	GET_STRING("IVM_CustomerProductID", eCustomerProdId, 32)
+
+	if (ivm_check_crc (&buf[CFG_IVM_EEPROM_PAGE_LEN * 2], 2) != 0)
+		return -2;
+	ivm_analyse_block2 (&buf[CFG_IVM_EEPROM_PAGE_LEN * 2], CFG_IVM_EEPROM_PAGE_LEN);
+
+	return 0;
+}
+
+int ivm_read_eeprom(void)
+{
+	I2C_MUX_DEVICE *dev = NULL;
+	uchar i2c_buffer[CFG_IVM_EEPROM_MAX_LEN];
+	uchar	*buf;
+	unsigned dev_addr = CFG_IVM_EEPROM_ADR;
+
+	/* First init the Bus, select the Bus */
+#if defined(CFG_I2C_IVM_BUS)
+	dev = i2c_mux_ident_muxstring ((uchar *)CFG_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);
+
+	buf = (unsigned char *) getenv ("EEprom_ivm_addr");
+	if (buf != NULL)
+		dev_addr = simple_strtoul ((char *)buf, NULL, 16);
+
+	if (eeprom_read (dev_addr, 0, i2c_buffer, CFG_IVM_EEPROM_MAX_LEN) != 0) {
+		printf ("Error reading EEprom\n");
+		return -2;
+	}
+	
+	return ivm_analyse_eeprom (i2c_buffer, CFG_IVM_EEPROM_MAX_LEN);
+
+}
+
 #if defined(CFG_I2C_INIT_BOARD)
 #define DELAY_ABORT_SEQ		62
 #define DELAY_HALF_PERIOD	(500 / (CFG_I2C_SPEED / 1000))
diff --git a/include/configs/mgcoge.h b/include/configs/mgcoge.h
index 6564c15..b32eb80 100644
--- a/include/configs/mgcoge.h
+++ b/include/configs/mgcoge.h
@@ -212,6 +212,11 @@
 #define CFG_EEPROM_PAGE_WRITE_BITS 3
 #define CFG_EEPROM_PAGE_WRITE_DELAY_MS 10

+/* Support the IVM EEprom */
+#define	CFG_IVM_EEPROM_ADR	0x50
+#define CFG_IVM_EEPROM_MAX_LEN	0x400
+#define CFG_IVM_EEPROM_PAGE_LEN	0x100
+
 /* I2C SYSMON (LM75, AD7414 is almost compatible)			*/
 #define CONFIG_DTT_LM75		1	/* ON Semi's LM75		*/
 #define CONFIG_DTT_SENSORS	{0}	/* Sensor addresses		*/
diff --git a/include/configs/mgsuvd.h b/include/configs/mgsuvd.h
index 79954fe..36c7f26 100644
--- a/include/configs/mgsuvd.h
+++ b/include/configs/mgsuvd.h
@@ -382,6 +382,11 @@
 #define CFG_EEPROM_PAGE_WRITE_BITS 3
 #define CFG_EEPROM_PAGE_WRITE_DELAY_MS 10

+/* Support the IVM EEprom */
+#define	CFG_IVM_EEPROM_ADR	0x50
+#define CFG_IVM_EEPROM_MAX_LEN	0x400
+#define CFG_IVM_EEPROM_PAGE_LEN	0x100
+
 /* I2C SYSMON (LM75, AD7414 is almost compatible)			*/
 #define CONFIG_DTT_LM75		1	/* ON Semi's LM75		*/
 #define CONFIG_DTT_SENSORS	{0, 2, 4, 6}	/* Sensor addresses		*/
diff --git a/lib_ppc/board.c b/lib_ppc/board.c
index c02ac62..9b5ff41 100644
--- a/lib_ppc/board.c
+++ b/lib_ppc/board.c
@@ -79,6 +79,9 @@
 extern int update_flash_size (int flash_size);
 #endif

+#if defined(CONFIG_MGCOGE) || defined(CONFIG_MGSUVD)
+extern int ivm_read_eeprom(void);
+#endif
 #if defined(CONFIG_SC3)
 extern void sc3_read_eeprom(void);
 #endif
@@ -869,6 +872,9 @@ void board_init_r (gd_t *id, ulong dest_addr)
 #endif	/* CONFIG_405GP, CONFIG_405EP */
 #endif	/* CFG_EXTBDINFO */

+#if defined(CONFIG_MGCOGE) || defined(CONFIG_MGSUVD)
+	ivm_read_eeprom();
+#endif
 #if defined(CONFIG_SC3)
 	sc3_read_eeprom();
 #endif
-- 
1.5.6.1

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