-extern int i2c_soft_read_pin (void);
-
-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", __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);
- ivm_set_value (name, (char *)valbuf);
- return val;
-}
-
-#define INVENTORYBLOCKSIZE 0x100
-#define INVENTORYDATAADDRESS 0x21
-#define INVENTORYDATASIZE (INVENTORYBLOCKSIZE - INVENTORYDATAADDRESS - 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 = INVENTORYDATAADDRESS;
- 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, "%02X:%02X:%02X:%02X:%02X:%02X",
- buf[1],
- buf[2],
- buf[3],
- buf[4],
- buf[5],
- buf[6]);
- ivm_set_value ("IVM_MacAddress", (char *)valbuf);
- if (getenv ("ethaddr") == NULL)
- 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;
-}