3 * Heiko Schocher, DENX Software Engineering, hs@denx.de.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 #if defined(CONFIG_MGCOGE)
34 #if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT)
38 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
41 extern int i2c_soft_read_pin (void);
43 int ivm_calc_crc (unsigned char *buf, int len)
45 const unsigned short crc_tab[16] = {
46 0x0000, 0xCC01, 0xD801, 0x1400,
47 0xF001, 0x3C00, 0x2800, 0xE401,
48 0xA001, 0x6C00, 0x7800, 0xB401,
49 0x5000, 0x9C01, 0x8801, 0x4400};
51 unsigned short crc = 0; /* final result */
52 unsigned short r1 = 0; /* temp */
53 unsigned char byte = 0; /* input buffer */
56 /* calculate CRC from array data */
57 for (i = 0; i < len; i++) {
61 r1 = crc_tab[crc & 0xF];
62 crc = ((crc) >> 4) & 0x0FFF;
63 crc = crc ^ r1 ^ crc_tab[byte & 0xF];
66 r1 = crc_tab[crc & 0xF];
67 crc = (crc >> 4) & 0x0FFF;
68 crc = crc ^ r1 ^ crc_tab[(byte >> 4) & 0xF];
73 static int ivm_set_value (char *name, char *value)
78 sprintf (tempbuf, "%s=%s", name, value);
79 return set_local_var (tempbuf, 0);
81 unset_local_var (name);
86 static int ivm_get_value (unsigned char *buf, int len, char *name, int off,
90 unsigned char valbuf[30];
92 if ((buf[off + 0] != buf[off + 2]) &&
93 (buf[off + 2] != buf[off + 4])) {
94 printf ("%s Error corrupted %s\n", __FUNCTION__, name);
97 val = buf[off + 0] + (buf[off + 1] << 8);
98 if ((val == 0) && (check == 1))
101 sprintf ((char *)valbuf, "%x", val);
102 ivm_set_value (name, (char *)valbuf);
106 #define INVENTORYBLOCKSIZE 0x100
107 #define INVENTORYDATAADDRESS 0x21
108 #define INVENTORYDATASIZE (INVENTORYBLOCKSIZE - INVENTORYDATAADDRESS - 3)
110 #define IVM_POS_SHORT_TEXT 0
111 #define IVM_POS_MANU_ID 1
112 #define IVM_POS_MANU_SERIAL 2
113 #define IVM_POS_PART_NUMBER 3
114 #define IVM_POS_BUILD_STATE 4
115 #define IVM_POS_SUPPLIER_PART_NUMBER 5
116 #define IVM_POS_DELIVERY_DATE 6
117 #define IVM_POS_SUPPLIER_BUILD_STATE 7
118 #define IVM_POS_CUSTOMER_ID 8
119 #define IVM_POS_CUSTOMER_PROD_ID 9
120 #define IVM_POS_HISTORY 10
121 #define IVM_POS_SYMBOL_ONLY 11
123 static char convert_char (char c)
125 return (c < ' ' || c > '~') ? '.' : c;
128 static int ivm_findinventorystring (int type,
129 unsigned char* const string,
130 unsigned long maxlen,
134 unsigned long cr = 0;
135 unsigned long addr = INVENTORYDATAADDRESS;
136 unsigned long size = 0;
137 unsigned long nr = type;
138 int stop = 0; /* stop on semicolon */
140 memset(string, '\0', maxlen);
142 case IVM_POS_SYMBOL_ONLY:
151 /* Look for the requested number of CR. */
152 while ((cr != nr) && (addr < INVENTORYDATASIZE)) {
153 if ((buf[addr] == '\r')) {
159 /* the expected number of CR was found until the end of the IVM
160 * content --> fill string */
161 if (addr < INVENTORYDATASIZE) {
162 /* Copy the IVM string in the corresponding string */
163 for (; (buf[addr] != '\r') &&
164 ((buf[addr] != ';') || (!stop)) &&
165 (size < (maxlen - 1) &&
166 (addr < INVENTORYDATASIZE)); addr++)
168 size += sprintf((char *)string + size, "%c",
169 convert_char (buf[addr]));
172 /* copy phase is done: check if everything is ok. If not,
173 * the inventory data is most probably corrupted: tell
174 * the world there is a problem! */
175 if (addr == INVENTORYDATASIZE) {
177 printf ("Error end of string not found\n");
178 } else if ((size >= (maxlen - 1)) &&
179 (buf[addr] != '\r')) {
181 printf ("string too long till next CR\n");
184 /* some CR are missing...
185 * the inventory data is most probably corrupted */
187 printf ("not enough cr found\n");
192 #define GET_STRING(name, which, len) \
193 if (ivm_findinventorystring (which, valbuf, len, buf) == 0) { \
194 ivm_set_value (name, (char *)valbuf); \
197 static int ivm_check_crc (unsigned char *buf, int block)
200 unsigned long crceeprom;
202 crc = ivm_calc_crc (buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 2);
203 crceeprom = (buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 1] + \
204 buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 2] * 256);
205 if (crc != crceeprom) {
207 printf ("Error CRC Block: %d EEprom: calculated: \
208 %lx EEprom: %lx\n", block, crc, crceeprom);
214 static int ivm_analyze_block2 (unsigned char *buf, int len)
216 unsigned char valbuf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN];
220 sprintf ((char *)valbuf, "%02X:%02X:%02X:%02X:%02X:%02X",
227 ivm_set_value ("IVM_MacAddress", (char *)valbuf);
228 if (getenv ("ethaddr") == NULL)
229 setenv ((char *)"ethaddr", (char *)valbuf);
231 count = (buf[10] << 24) +
235 if (count == 0xffffffff)
237 sprintf ((char *)valbuf, "%lx", count);
238 ivm_set_value ("IVM_MacCount", (char *)valbuf);
242 int ivm_analyze_eeprom (unsigned char *buf, int len)
245 unsigned char valbuf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN];
248 if (ivm_check_crc (buf, 0) != 0)
251 ivm_get_value (buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN, "IVM_BoardId", 0, 1);
252 val = ivm_get_value (buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN, "IVM_HWKey", 6, 1);
254 sprintf ((char *)valbuf, "%x", ((val /100) % 10));
255 ivm_set_value ("IVM_HWVariant", (char *)valbuf);
256 sprintf ((char *)valbuf, "%x", (val % 100));
257 ivm_set_value ("IVM_HWVersion", (char *)valbuf);
259 ivm_get_value (buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN, "IVM_Functions", 12, 0);
261 GET_STRING("IVM_Symbol", IVM_POS_SYMBOL_ONLY, 8)
262 GET_STRING("IVM_DeviceName", IVM_POS_SHORT_TEXT, 64)
263 tmp = (unsigned char *) getenv("IVM_DeviceName");
265 int len = strlen ((char *)tmp);
270 ivm_set_value ("IVM_ShortText", (char *)&tmp[i + 1]);
276 ivm_set_value ("IVM_ShortText", NULL);
278 ivm_set_value ("IVM_ShortText", NULL);
280 GET_STRING("IVM_ManufacturerID", IVM_POS_MANU_ID, 32)
281 GET_STRING("IVM_ManufacturerSerialNumber", IVM_POS_MANU_SERIAL, 20)
282 GET_STRING("IVM_ManufacturerPartNumber", IVM_POS_PART_NUMBER, 32)
283 GET_STRING("IVM_ManufacturerBuildState", IVM_POS_BUILD_STATE, 32)
284 GET_STRING("IVM_SupplierPartNumber", IVM_POS_SUPPLIER_PART_NUMBER, 32)
285 GET_STRING("IVM_DelieveryDate", IVM_POS_DELIVERY_DATE, 32)
286 GET_STRING("IVM_SupplierBuildState", IVM_POS_SUPPLIER_BUILD_STATE, 32)
287 GET_STRING("IVM_CustomerID", IVM_POS_CUSTOMER_ID, 32)
288 GET_STRING("IVM_CustomerProductID", IVM_POS_CUSTOMER_PROD_ID, 32)
290 if (ivm_check_crc (&buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN * 2], 2) != 0)
292 ivm_analyze_block2 (&buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN * 2], CONFIG_SYS_IVM_EEPROM_PAGE_LEN);
297 int ivm_read_eeprom (void)
299 #if defined(CONFIG_I2C_MUX)
300 I2C_MUX_DEVICE *dev = NULL;
302 uchar i2c_buffer[CONFIG_SYS_IVM_EEPROM_MAX_LEN];
304 unsigned dev_addr = CONFIG_SYS_IVM_EEPROM_ADR;
306 #if defined(CONFIG_I2C_MUX)
307 /* First init the Bus, select the Bus */
308 #if defined(CONFIG_SYS_I2C_IVM_BUS)
309 dev = i2c_mux_ident_muxstring ((uchar *)CONFIG_SYS_I2C_IVM_BUS);
311 buf = (unsigned char *) getenv ("EEprom_ivm");
313 dev = i2c_mux_ident_muxstring (buf);
316 printf ("Error couldnt add Bus for IVM\n");
319 i2c_set_bus_num (dev->busid);
322 buf = (unsigned char *) getenv ("EEprom_ivm_addr");
324 dev_addr = simple_strtoul ((char *)buf, NULL, 16);
326 if (i2c_read(dev_addr, 0, 1, i2c_buffer, CONFIG_SYS_IVM_EEPROM_MAX_LEN) != 0) {
327 printf ("Error reading EEprom\n");
331 return ivm_analyze_eeprom (i2c_buffer, CONFIG_SYS_IVM_EEPROM_MAX_LEN);
334 #if defined(CONFIG_SYS_I2C_INIT_BOARD)
335 #define DELAY_ABORT_SEQ 62
336 #define DELAY_HALF_PERIOD (500 / (CONFIG_SYS_I2C_SPEED / 1000))
338 #if defined(CONFIG_MGCOGE)
339 #define SDA_MASK 0x00010000
340 #define SCL_MASK 0x00020000
341 static void set_pin (int state, unsigned long mask)
343 volatile ioport_t *iop = ioport_addr ((immap_t *)CONFIG_SYS_IMMR, 3);
348 iop->pdat &= ~(mask);
353 static int get_pin (unsigned long mask)
355 volatile ioport_t *iop = ioport_addr ((immap_t *)CONFIG_SYS_IMMR, 3);
357 iop->pdir &= ~(mask);
358 return (0 != (iop->pdat & (mask)));
361 static void set_sda (int state)
363 set_pin (state, SDA_MASK);
366 static void set_scl (int state)
368 set_pin (state, SCL_MASK);
371 static int get_sda (void)
373 return get_pin (SDA_MASK);
376 static int get_scl (void)
378 return get_pin (SCL_MASK);
381 #if defined(CONFIG_HARD_I2C)
382 static void setports (int gpio)
384 volatile ioport_t *iop = ioport_addr ((immap_t *)CONFIG_SYS_IMMR, 3);
387 iop->ppar &= ~(SDA_MASK | SCL_MASK);
388 iop->podr &= ~(SDA_MASK | SCL_MASK);
390 iop->ppar |= (SDA_MASK | SCL_MASK);
391 iop->pdir &= ~(SDA_MASK | SCL_MASK);
392 iop->podr |= (SDA_MASK | SCL_MASK);
398 #if defined(CONFIG_KM8XX)
399 static void set_sda (int state)
404 static void set_scl (int state)
409 static int get_sda (void)
414 static int get_scl (void)
418 *(unsigned short *)(I2C_BASE_DIR) &= ~SCL_CONF;
420 val = *(unsigned char *)(I2C_BASE_PORT);
422 return ((val & SCL_BIT) == SCL_BIT);
427 #if !defined(CONFIG_KMETER1)
428 static void writeStartSeq (void)
431 udelay (DELAY_HALF_PERIOD);
433 udelay (DELAY_HALF_PERIOD);
435 udelay (DELAY_HALF_PERIOD);
437 udelay (DELAY_HALF_PERIOD);
440 /* I2C is a synchronous protocol and resets of the processor in the middle
441 of an access can block the I2C Bus until a powerdown of the full unit is
442 done. This function toggles the SCL until the SCL and SCA line are
443 released, but max. 16 times, after this a I2C start-sequence is sent.
444 This I2C Deblocking mechanism was developed by Keymile in association
445 with Anatech and Atmel in 1998.
447 static int i2c_make_abort (void)
459 udelay (DELAY_ABORT_SEQ);
461 udelay (DELAY_ABORT_SEQ);
462 scl_state = get_scl ();
463 sda_state = get_sda ();
464 if (scl_state && sda_state) {
471 for (i =0; i < 5; i++) {
481 * i2c_init_board - reset i2c bus. When the board is powercycled during a
482 * bus transfer it might hang; for details see doc/I2C_Edge_Conditions.
484 void i2c_init_board(void)
486 #if defined(CONFIG_KMETER1)
488 dev = (struct fsl_i2c *) (CONFIG_SYS_IMMR + CONFIG_SYS_I2C_OFFSET);
491 out_8 (&dev->cr, (I2C_CR_MSTA));
492 out_8 (&dev->cr, (I2C_CR_MEN | I2C_CR_MSTA));
493 dummy = in_8(&dev->dr);
494 dummy = in_8(&dev->dr);
496 dummy = in_8(&dev->dr);
498 out_8 (&dev->cr, (I2C_CR_MEN));
499 out_8 (&dev->cr, 0x00);
500 out_8 (&dev->cr, (I2C_CR_MEN));
503 #if defined(CONFIG_HARD_I2C)
504 volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR ;
505 volatile i2c8260_t *i2c = (i2c8260_t *)&immap->im_i2c;
507 /* disable I2C controller first, otherwhise it thinks we want to */
508 /* talk to the slave port... */
509 i2c->i2c_i2mod &= ~0x01;
511 /* Set the PortPins to GPIO */
515 /* Now run the AbortSequence() */
518 #if defined(CONFIG_HARD_I2C)
519 /* Set the PortPins back to use for I2C */
527 #if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT)
528 int fdt_set_node_and_value (void *blob,
537 nodeoffset = fdt_path_offset (blob, nodename);
538 if (nodeoffset >= 0) {
539 ret = fdt_setprop (blob, nodeoffset, regname, var,
542 printf("ft_blob_update(): cannot set %s/%s "
543 "property err:%s\n", nodename, regname,
546 printf("ft_blob_update(): cannot find %s node "
547 "err:%s\n", nodename, fdt_strerror (nodeoffset));
551 int fdt_get_node_and_value (void *blob,
559 nodeoffset = fdt_path_offset (blob, nodename);
560 if (nodeoffset >= 0) {
561 *var = (void *)fdt_getprop (blob, nodeoffset, propname, &len);
564 printf ("%s no value\n", __FUNCTION__);
566 } else if (len > 0) {
569 printf ("libfdt fdt_getprop(): %s\n",
574 printf("%s: cannot find %s node err:%s\n", __FUNCTION__,
575 nodename, fdt_strerror (nodeoffset));
581 int ethernet_present (void)
583 return (in_8((u8 *)CONFIG_SYS_PIGGY_BASE + CONFIG_SYS_SLOT_ID_OFF) & 0x80);
586 int board_eth_init (bd_t *bis)
588 #ifdef CONFIG_KEYMILE_HDLC_ENET
589 (void)keymile_hdlc_enet_initialize (bis);
591 if (ethernet_present ()) {