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 #include "../common/common.h"
39 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
42 int ivm_calc_crc(unsigned char *buf, int len)
44 const unsigned short crc_tab[16] = {
45 0x0000, 0xCC01, 0xD801, 0x1400,
46 0xF001, 0x3C00, 0x2800, 0xE401,
47 0xA001, 0x6C00, 0x7800, 0xB401,
48 0x5000, 0x9C01, 0x8801, 0x4400};
50 unsigned short crc = 0; /* final result */
51 unsigned short r1 = 0; /* temp */
52 unsigned char byte = 0; /* input buffer */
55 /* calculate CRC from array data */
56 for (i = 0; i < len; i++) {
60 r1 = crc_tab[crc & 0xF];
61 crc = ((crc) >> 4) & 0x0FFF;
62 crc = crc ^ r1 ^ crc_tab[byte & 0xF];
65 r1 = crc_tab[crc & 0xF];
66 crc = (crc >> 4) & 0x0FFF;
67 crc = crc ^ r1 ^ crc_tab[(byte >> 4) & 0xF];
72 static int ivm_set_value(char *name, char *value)
77 sprintf(tempbuf, "%s=%s", name, value);
78 return set_local_var(tempbuf, 0);
80 unset_local_var(name);
85 static int ivm_get_value(unsigned char *buf, int len, char *name, int off,
89 unsigned char valbuf[30];
91 if ((buf[off + 0] != buf[off + 2]) &&
92 (buf[off + 2] != buf[off + 4])) {
93 printf("%s Error corrupted %s\n", __func__, name);
96 val = buf[off + 0] + (buf[off + 1] << 8);
97 if ((val == 0) && (check == 1))
100 sprintf((char *)valbuf, "%x", val);
101 ivm_set_value(name, (char *)valbuf);
105 #define INV_BLOCKSIZE 0x100
106 #define INV_DATAADDRESS 0x21
107 #define INVENTORYDATASIZE (INV_BLOCKSIZE - INV_DATAADDRESS - 3)
109 #define IVM_POS_SHORT_TEXT 0
110 #define IVM_POS_MANU_ID 1
111 #define IVM_POS_MANU_SERIAL 2
112 #define IVM_POS_PART_NUMBER 3
113 #define IVM_POS_BUILD_STATE 4
114 #define IVM_POS_SUPPLIER_PART_NUMBER 5
115 #define IVM_POS_DELIVERY_DATE 6
116 #define IVM_POS_SUPPLIER_BUILD_STATE 7
117 #define IVM_POS_CUSTOMER_ID 8
118 #define IVM_POS_CUSTOMER_PROD_ID 9
119 #define IVM_POS_HISTORY 10
120 #define IVM_POS_SYMBOL_ONLY 11
122 static char convert_char(char c)
124 return (c < ' ' || c > '~') ? '.' : c;
127 static int ivm_findinventorystring(int type,
128 unsigned char* const string,
129 unsigned long maxlen,
133 unsigned long cr = 0;
134 unsigned long addr = INV_DATAADDRESS;
135 unsigned long size = 0;
136 unsigned long nr = type;
137 int stop = 0; /* stop on semicolon */
139 memset(string, '\0', maxlen);
141 case IVM_POS_SYMBOL_ONLY:
150 /* Look for the requested number of CR. */
151 while ((cr != nr) && (addr < INVENTORYDATASIZE)) {
152 if ((buf[addr] == '\r')) {
159 * the expected number of CR was found until the end of the IVM
160 * content --> fill string
162 if (addr < INVENTORYDATASIZE) {
163 /* Copy the IVM string in the corresponding string */
164 for (; (buf[addr] != '\r') &&
165 ((buf[addr] != ';') || (!stop)) &&
166 (size < (maxlen - 1) &&
167 (addr < INVENTORYDATASIZE)); addr++)
169 size += sprintf((char *)string + size, "%c",
170 convert_char (buf[addr]));
174 * copy phase is done: check if everything is ok. If not,
175 * the inventory data is most probably corrupted: tell
176 * the world there is a problem!
178 if (addr == INVENTORYDATASIZE) {
180 printf("Error end of string not found\n");
181 } else if ((size >= (maxlen - 1)) &&
182 (buf[addr] != '\r')) {
184 printf("string too long till next CR\n");
188 * some CR are missing...
189 * the inventory data is most probably corrupted
192 printf("not enough cr found\n");
197 #define GET_STRING(name, which, len) \
198 if (ivm_findinventorystring(which, valbuf, len, buf) == 0) { \
199 ivm_set_value(name, (char *)valbuf); \
202 static int ivm_check_crc(unsigned char *buf, int block)
205 unsigned long crceeprom;
207 crc = ivm_calc_crc(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 2);
208 crceeprom = (buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 1] + \
209 buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 2] * 256);
210 if (crc != crceeprom) {
212 printf("Error CRC Block: %d EEprom: calculated: \
213 %lx EEprom: %lx\n", block, crc, crceeprom);
219 static int ivm_analyze_block2(unsigned char *buf, int len)
221 unsigned char valbuf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN];
225 sprintf((char *)valbuf, "%pM", buf);
226 ivm_set_value("IVM_MacAddress", (char *)valbuf);
227 if (getenv("ethaddr") == NULL)
228 setenv((char *)"ethaddr", (char *)valbuf);
230 count = (buf[10] << 24) +
234 if (count == 0xffffffff)
236 sprintf((char *)valbuf, "%lx", count);
237 ivm_set_value("IVM_MacCount", (char *)valbuf);
241 int ivm_analyze_eeprom(unsigned char *buf, int len)
244 unsigned char valbuf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN];
247 if (ivm_check_crc(buf, 0) != 0)
250 ivm_get_value(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN,
251 "IVM_BoardId", 0, 1);
252 val = ivm_get_value(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN,
255 sprintf((char *)valbuf, "%x", ((val / 100) % 10));
256 ivm_set_value("IVM_HWVariant", (char *)valbuf);
257 sprintf((char *)valbuf, "%x", (val % 100));
258 ivm_set_value("IVM_HWVersion", (char *)valbuf);
260 ivm_get_value(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN,
261 "IVM_Functions", 12, 0);
263 GET_STRING("IVM_Symbol", IVM_POS_SYMBOL_ONLY, 8)
264 GET_STRING("IVM_DeviceName", IVM_POS_SHORT_TEXT, 64)
265 tmp = (unsigned char *) getenv("IVM_DeviceName");
267 int len = strlen((char *)tmp);
272 ivm_set_value("IVM_ShortText",
273 (char *)&tmp[i + 1]);
279 ivm_set_value("IVM_ShortText", NULL);
281 ivm_set_value("IVM_ShortText", NULL);
283 GET_STRING("IVM_ManufacturerID", IVM_POS_MANU_ID, 32)
284 GET_STRING("IVM_ManufacturerSerialNumber", IVM_POS_MANU_SERIAL, 20)
285 GET_STRING("IVM_ManufacturerPartNumber", IVM_POS_PART_NUMBER, 32)
286 GET_STRING("IVM_ManufacturerBuildState", IVM_POS_BUILD_STATE, 32)
287 GET_STRING("IVM_SupplierPartNumber", IVM_POS_SUPPLIER_PART_NUMBER, 32)
288 GET_STRING("IVM_DelieveryDate", IVM_POS_DELIVERY_DATE, 32)
289 GET_STRING("IVM_SupplierBuildState", IVM_POS_SUPPLIER_BUILD_STATE, 32)
290 GET_STRING("IVM_CustomerID", IVM_POS_CUSTOMER_ID, 32)
291 GET_STRING("IVM_CustomerProductID", IVM_POS_CUSTOMER_PROD_ID, 32)
293 if (ivm_check_crc(&buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN * 2], 2) != 0)
295 ivm_analyze_block2(&buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN * 2],
296 CONFIG_SYS_IVM_EEPROM_PAGE_LEN);
301 int ivm_read_eeprom(void)
303 #if defined(CONFIG_I2C_MUX)
304 I2C_MUX_DEVICE *dev = NULL;
306 uchar i2c_buffer[CONFIG_SYS_IVM_EEPROM_MAX_LEN];
308 unsigned dev_addr = CONFIG_SYS_IVM_EEPROM_ADR;
311 #if defined(CONFIG_I2C_MUX)
312 /* First init the Bus, select the Bus */
313 #if defined(CONFIG_SYS_I2C_IVM_BUS)
314 dev = i2c_mux_ident_muxstring((uchar *)CONFIG_SYS_I2C_IVM_BUS);
316 buf = (unsigned char *) getenv("EEprom_ivm");
318 dev = i2c_mux_ident_muxstring(buf);
321 printf("Error couldnt add Bus for IVM\n");
324 i2c_set_bus_num(dev->busid);
327 buf = (unsigned char *) getenv("EEprom_ivm_addr");
329 dev_addr = simple_strtoul((char *)buf, NULL, 16);
331 ret = i2c_read(dev_addr, 0, 1, i2c_buffer,
332 CONFIG_SYS_IVM_EEPROM_MAX_LEN);
334 printf ("Error reading EEprom\n");
338 return ivm_analyze_eeprom(i2c_buffer, CONFIG_SYS_IVM_EEPROM_MAX_LEN);
341 #if defined(CONFIG_SYS_I2C_INIT_BOARD)
342 #define DELAY_ABORT_SEQ 62
343 #define DELAY_HALF_PERIOD (500 / (CONFIG_SYS_I2C_SPEED / 1000))
345 #if defined(CONFIG_MGCOGE)
346 #define SDA_MASK 0x00010000
347 #define SCL_MASK 0x00020000
348 static void set_pin(int state, unsigned long mask)
350 ioport_t *iop = ioport_addr((immap_t *)CONFIG_SYS_IMMR, 3);
353 setbits_be32(&iop->pdat, mask);
355 clrbits_be32(&iop->pdat, mask);
357 setbits_be32(&iop->pdir, mask);
360 static int get_pin(unsigned long mask)
362 ioport_t *iop = ioport_addr((immap_t *)CONFIG_SYS_IMMR, 3);
364 clrbits_be32(&iop->pdir, mask);
365 return 0 != (in_be32(&iop->pdat) & mask);
368 static void set_sda(int state)
370 set_pin(state, SDA_MASK);
373 static void set_scl(int state)
375 set_pin(state, SCL_MASK);
378 static int get_sda(void)
380 return get_pin(SDA_MASK);
383 static int get_scl(void)
385 return get_pin(SCL_MASK);
388 #if defined(CONFIG_HARD_I2C)
389 static void setports(int gpio)
391 ioport_t *iop = ioport_addr((immap_t *)CONFIG_SYS_IMMR, 3);
394 clrbits_be32(&iop->ppar, (SDA_MASK | SCL_MASK));
395 clrbits_be32(&iop->podr, (SDA_MASK | SCL_MASK));
397 setbits_be32(&iop->ppar, (SDA_MASK | SCL_MASK));
398 clrbits_be32(&iop->pdir, (SDA_MASK | SCL_MASK));
399 setbits_be32(&iop->podr, (SDA_MASK | SCL_MASK));
405 #if !defined(CONFIG_KMETER1)
406 static void writeStartSeq(void)
409 udelay(DELAY_HALF_PERIOD);
411 udelay(DELAY_HALF_PERIOD);
413 udelay(DELAY_HALF_PERIOD);
415 udelay(DELAY_HALF_PERIOD);
419 * I2C is a synchronous protocol and resets of the processor in the middle
420 * of an access can block the I2C Bus until a powerdown of the full unit is
421 * done. This function toggles the SCL until the SCL and SCA line are
422 * released, but max. 16 times, after this a I2C start-sequence is sent.
423 * This I2C Deblocking mechanism was developed by Keymile in association
424 * with Anatech and Atmel in 1998.
426 static int i2c_make_abort(void)
438 udelay(DELAY_ABORT_SEQ);
440 udelay(DELAY_ABORT_SEQ);
441 scl_state = get_scl();
442 sda_state = get_sda();
443 if (scl_state && sda_state) {
450 for (i = 0; i < 5; i++)
459 * i2c_init_board - reset i2c bus. When the board is powercycled during a
460 * bus transfer it might hang; for details see doc/I2C_Edge_Conditions.
462 void i2c_init_board(void)
464 #if defined(CONFIG_KMETER1)
466 dev = (struct fsl_i2c *) (CONFIG_SYS_IMMR + CONFIG_SYS_I2C_OFFSET);
469 out_8(&dev->cr, (I2C_CR_MSTA));
470 out_8(&dev->cr, (I2C_CR_MEN | I2C_CR_MSTA));
471 dummy = in_8(&dev->dr);
472 dummy = in_8(&dev->dr);
474 dummy = in_8(&dev->dr);
476 out_8(&dev->cr, (I2C_CR_MEN));
477 out_8(&dev->cr, 0x00);
478 out_8(&dev->cr, (I2C_CR_MEN));
480 #if defined(CONFIG_HARD_I2C) && !defined(MACH_TYPE_KM_KIRKWOOD)
481 immap_t *immap = (immap_t *)CONFIG_SYS_IMMR ;
482 i2c8260_t *i2c = (i2c8260_t *)&immap->im_i2c;
485 * disable I2C controller first, otherwhise it thinks we want to
486 * talk to the slave port...
488 clrbits_8(&i2c->i2c_i2mod, 0x01);
490 /* Set the PortPins to GPIO */
494 /* Now run the AbortSequence() */
497 #if defined(CONFIG_HARD_I2C)
498 /* Set the PortPins back to use for I2C */
506 #if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT)
507 int fdt_set_node_and_value(void *blob,
516 nodeoffset = fdt_path_offset(blob, nodename);
517 if (nodeoffset >= 0) {
518 ret = fdt_setprop(blob, nodeoffset, regname, var,
521 printf("ft_blob_update(): cannot set %s/%s "
522 "property err:%s\n", nodename, regname,
525 printf("ft_blob_update(): cannot find %s node "
526 "err:%s\n", nodename, fdt_strerror(nodeoffset));
531 int fdt_get_node_and_value(void *blob,
539 nodeoffset = fdt_path_offset(blob, nodename);
540 if (nodeoffset >= 0) {
541 *var = (void *)fdt_getprop(blob, nodeoffset, propname, &len);
544 printf("%s no value\n", __func__);
546 } else if (len > 0) {
549 printf("libfdt fdt_getprop(): %s\n",
554 printf("%s: cannot find %s node err:%s\n", __func__,
555 nodename, fdt_strerror(nodeoffset));
561 #if !defined(MACH_TYPE_KM_KIRKWOOD)
562 int ethernet_present(void)
564 struct km_bec_fpga *base = (struct km_bec_fpga *)CONFIG_SYS_PIGGY_BASE;
566 return in_8(&base->bprth) & PIGGY_PRESENT;
570 int board_eth_init(bd_t *bis)
572 #ifdef CONFIG_KEYMILE_HDLC_ENET
573 (void)keymile_hdlc_enet_initialize(bis);
575 if (ethernet_present())