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) || defined(CONFIG_MGCOGE2NE)
35 #if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT)
39 #include "../common/common.h"
40 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
43 static void i2c_write_start_seq(void);
44 static int i2c_make_abort(void);
45 DECLARE_GLOBAL_DATA_PTR;
47 int ivm_calc_crc(unsigned char *buf, int len)
49 const unsigned short crc_tab[16] = {
50 0x0000, 0xCC01, 0xD801, 0x1400,
51 0xF001, 0x3C00, 0x2800, 0xE401,
52 0xA001, 0x6C00, 0x7800, 0xB401,
53 0x5000, 0x9C01, 0x8801, 0x4400};
55 unsigned short crc = 0; /* final result */
56 unsigned short r1 = 0; /* temp */
57 unsigned char byte = 0; /* input buffer */
60 /* calculate CRC from array data */
61 for (i = 0; i < len; i++) {
65 r1 = crc_tab[crc & 0xF];
66 crc = ((crc) >> 4) & 0x0FFF;
67 crc = crc ^ r1 ^ crc_tab[byte & 0xF];
70 r1 = crc_tab[crc & 0xF];
71 crc = (crc >> 4) & 0x0FFF;
72 crc = crc ^ r1 ^ crc_tab[(byte >> 4) & 0xF];
78 * Set Keymile specific environment variables
79 * Currently only some memory layout variables are calculated here
80 * ... ------------------------------------------------
81 * ... |@rootfsaddr |@pnvramaddr |@varaddr |@reserved |@END_OF_RAM
82 * ... |<------------------- pram ------------------->|
83 * ... ------------------------------------------------
84 * @END_OF_RAM: denotes the RAM size
85 * @pnvramaddr: Startadress of pseudo non volatile RAM in hex
86 * @pram : preserved ram size in k
87 * @varaddr : startadress for /var mounted into RAM
92 unsigned int pnvramaddr;
96 pnvramaddr = gd->ram_size - CONFIG_KM_RESERVED_PRAM - CONFIG_KM_PHRAM
98 sprintf((char *)buf, "0x%x", pnvramaddr);
99 setenv("pnvramaddr", (char *)buf);
101 pram = (CONFIG_KM_RESERVED_PRAM + CONFIG_KM_PHRAM + CONFIG_KM_PNVRAM) /
103 sprintf((char *)buf, "0x%x", pram);
104 setenv("pram", (char *)buf);
106 varaddr = gd->ram_size - CONFIG_KM_RESERVED_PRAM - CONFIG_KM_PHRAM;
107 sprintf((char *)buf, "0x%x", varaddr);
108 setenv("varaddr", (char *)buf);
112 static int ivm_set_value(char *name, char *value)
117 sprintf(tempbuf, "%s=%s", name, value);
118 return set_local_var(tempbuf, 0);
120 unset_local_var(name);
125 static int ivm_get_value(unsigned char *buf, int len, char *name, int off,
129 unsigned char valbuf[30];
131 if ((buf[off + 0] != buf[off + 2]) &&
132 (buf[off + 2] != buf[off + 4])) {
133 printf("%s Error corrupted %s\n", __func__, name);
136 val = buf[off + 0] + (buf[off + 1] << 8);
137 if ((val == 0) && (check == 1))
140 sprintf((char *)valbuf, "%x", val);
141 ivm_set_value(name, (char *)valbuf);
145 #define INV_BLOCKSIZE 0x100
146 #define INV_DATAADDRESS 0x21
147 #define INVENTORYDATASIZE (INV_BLOCKSIZE - INV_DATAADDRESS - 3)
149 #define IVM_POS_SHORT_TEXT 0
150 #define IVM_POS_MANU_ID 1
151 #define IVM_POS_MANU_SERIAL 2
152 #define IVM_POS_PART_NUMBER 3
153 #define IVM_POS_BUILD_STATE 4
154 #define IVM_POS_SUPPLIER_PART_NUMBER 5
155 #define IVM_POS_DELIVERY_DATE 6
156 #define IVM_POS_SUPPLIER_BUILD_STATE 7
157 #define IVM_POS_CUSTOMER_ID 8
158 #define IVM_POS_CUSTOMER_PROD_ID 9
159 #define IVM_POS_HISTORY 10
160 #define IVM_POS_SYMBOL_ONLY 11
162 static char convert_char(char c)
164 return (c < ' ' || c > '~') ? '.' : c;
167 static int ivm_findinventorystring(int type,
168 unsigned char* const string,
169 unsigned long maxlen,
173 unsigned long cr = 0;
174 unsigned long addr = INV_DATAADDRESS;
175 unsigned long size = 0;
176 unsigned long nr = type;
177 int stop = 0; /* stop on semicolon */
179 memset(string, '\0', maxlen);
181 case IVM_POS_SYMBOL_ONLY:
190 /* Look for the requested number of CR. */
191 while ((cr != nr) && (addr < INVENTORYDATASIZE)) {
192 if ((buf[addr] == '\r')) {
199 * the expected number of CR was found until the end of the IVM
200 * content --> fill string
202 if (addr < INVENTORYDATASIZE) {
203 /* Copy the IVM string in the corresponding string */
204 for (; (buf[addr] != '\r') &&
205 ((buf[addr] != ';') || (!stop)) &&
206 (size < (maxlen - 1) &&
207 (addr < INVENTORYDATASIZE)); addr++)
209 size += sprintf((char *)string + size, "%c",
210 convert_char (buf[addr]));
214 * copy phase is done: check if everything is ok. If not,
215 * the inventory data is most probably corrupted: tell
216 * the world there is a problem!
218 if (addr == INVENTORYDATASIZE) {
220 printf("Error end of string not found\n");
221 } else if ((size >= (maxlen - 1)) &&
222 (buf[addr] != '\r')) {
224 printf("string too long till next CR\n");
228 * some CR are missing...
229 * the inventory data is most probably corrupted
232 printf("not enough cr found\n");
237 #define GET_STRING(name, which, len) \
238 if (ivm_findinventorystring(which, valbuf, len, buf) == 0) { \
239 ivm_set_value(name, (char *)valbuf); \
242 static int ivm_check_crc(unsigned char *buf, int block)
245 unsigned long crceeprom;
247 crc = ivm_calc_crc(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 2);
248 crceeprom = (buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 1] + \
249 buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 2] * 256);
250 if (crc != crceeprom) {
252 printf("Error CRC Block: %d EEprom: calculated: \
253 %lx EEprom: %lx\n", block, crc, crceeprom);
259 static int ivm_analyze_block2(unsigned char *buf, int len)
261 unsigned char valbuf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN];
265 sprintf((char *)valbuf, "%pM", buf);
266 ivm_set_value("IVM_MacAddress", (char *)valbuf);
267 /* if an offset is defined, add it */
268 #if defined(CONFIG_PIGGY_MAC_ADRESS_OFFSET)
269 if (CONFIG_PIGGY_MAC_ADRESS_OFFSET > 0) {
270 unsigned long val = (buf[4] << 16) + (buf[5] << 8) + buf[6];
272 val += CONFIG_PIGGY_MAC_ADRESS_OFFSET;
273 buf[4] = (val >> 16) & 0xff;
274 buf[5] = (val >> 8) & 0xff;
276 sprintf((char *)valbuf, "%pM", buf);
279 if (getenv("ethaddr") == NULL)
280 setenv((char *)"ethaddr", (char *)valbuf);
283 count = (buf[10] << 24) +
287 if (count == 0xffffffff)
289 sprintf((char *)valbuf, "%lx", count);
290 ivm_set_value("IVM_MacCount", (char *)valbuf);
294 int ivm_analyze_eeprom(unsigned char *buf, int len)
297 unsigned char valbuf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN];
300 if (ivm_check_crc(buf, 0) != 0)
303 ivm_get_value(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN,
304 "IVM_BoardId", 0, 1);
305 val = ivm_get_value(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN,
308 sprintf((char *)valbuf, "%x", ((val / 100) % 10));
309 ivm_set_value("IVM_HWVariant", (char *)valbuf);
310 sprintf((char *)valbuf, "%x", (val % 100));
311 ivm_set_value("IVM_HWVersion", (char *)valbuf);
313 ivm_get_value(buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN,
314 "IVM_Functions", 12, 0);
316 GET_STRING("IVM_Symbol", IVM_POS_SYMBOL_ONLY, 8)
317 GET_STRING("IVM_DeviceName", IVM_POS_SHORT_TEXT, 64)
318 tmp = (unsigned char *) getenv("IVM_DeviceName");
320 int len = strlen((char *)tmp);
325 ivm_set_value("IVM_ShortText",
326 (char *)&tmp[i + 1]);
332 ivm_set_value("IVM_ShortText", NULL);
334 ivm_set_value("IVM_ShortText", NULL);
336 GET_STRING("IVM_ManufacturerID", IVM_POS_MANU_ID, 32)
337 GET_STRING("IVM_ManufacturerSerialNumber", IVM_POS_MANU_SERIAL, 20)
338 GET_STRING("IVM_ManufacturerPartNumber", IVM_POS_PART_NUMBER, 32)
339 GET_STRING("IVM_ManufacturerBuildState", IVM_POS_BUILD_STATE, 32)
340 GET_STRING("IVM_SupplierPartNumber", IVM_POS_SUPPLIER_PART_NUMBER, 32)
341 GET_STRING("IVM_DelieveryDate", IVM_POS_DELIVERY_DATE, 32)
342 GET_STRING("IVM_SupplierBuildState", IVM_POS_SUPPLIER_BUILD_STATE, 32)
343 GET_STRING("IVM_CustomerID", IVM_POS_CUSTOMER_ID, 32)
344 GET_STRING("IVM_CustomerProductID", IVM_POS_CUSTOMER_PROD_ID, 32)
346 if (ivm_check_crc(&buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN * 2], 2) != 0)
348 ivm_analyze_block2(&buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN * 2],
349 CONFIG_SYS_IVM_EEPROM_PAGE_LEN);
354 int ivm_read_eeprom(void)
356 #if defined(CONFIG_I2C_MUX)
357 I2C_MUX_DEVICE *dev = NULL;
359 uchar i2c_buffer[CONFIG_SYS_IVM_EEPROM_MAX_LEN];
361 unsigned dev_addr = CONFIG_SYS_IVM_EEPROM_ADR;
364 #if defined(CONFIG_I2C_MUX)
365 /* First init the Bus, select the Bus */
366 #if defined(CONFIG_SYS_I2C_IVM_BUS)
367 dev = i2c_mux_ident_muxstring((uchar *)CONFIG_SYS_I2C_IVM_BUS);
369 buf = (unsigned char *) getenv("EEprom_ivm");
371 dev = i2c_mux_ident_muxstring(buf);
374 printf("Error couldnt add Bus for IVM\n");
377 i2c_set_bus_num(dev->busid);
380 buf = (unsigned char *) getenv("EEprom_ivm_addr");
382 dev_addr = simple_strtoul((char *)buf, NULL, 16);
384 /* add deblocking here */
387 ret = i2c_read(dev_addr, 0, 1, i2c_buffer,
388 CONFIG_SYS_IVM_EEPROM_MAX_LEN);
390 printf ("Error reading EEprom\n");
394 return ivm_analyze_eeprom(i2c_buffer, CONFIG_SYS_IVM_EEPROM_MAX_LEN);
397 #if defined(CONFIG_SYS_I2C_INIT_BOARD)
398 #define DELAY_ABORT_SEQ 62 /* @200kHz 9 clocks = 44us, 62us is ok */
399 #define DELAY_HALF_PERIOD (500 / (CONFIG_SYS_I2C_SPEED / 1000))
401 #if defined(CONFIG_MGCOGE) || defined(CONFIG_MGCOGE2NE)
402 #define SDA_MASK 0x00010000
403 #define SCL_MASK 0x00020000
404 static void set_pin(int state, unsigned long mask)
406 ioport_t *iop = ioport_addr((immap_t *)CONFIG_SYS_IMMR, 3);
409 setbits_be32(&iop->pdat, mask);
411 clrbits_be32(&iop->pdat, mask);
413 setbits_be32(&iop->pdir, mask);
416 static int get_pin(unsigned long mask)
418 ioport_t *iop = ioport_addr((immap_t *)CONFIG_SYS_IMMR, 3);
420 clrbits_be32(&iop->pdir, mask);
421 return 0 != (in_be32(&iop->pdat) & mask);
424 static void set_sda(int state)
426 set_pin(state, SDA_MASK);
429 static void set_scl(int state)
431 set_pin(state, SCL_MASK);
434 static int get_sda(void)
436 return get_pin(SDA_MASK);
439 static int get_scl(void)
441 return get_pin(SCL_MASK);
444 #if defined(CONFIG_HARD_I2C)
445 static void setports(int gpio)
447 ioport_t *iop = ioport_addr((immap_t *)CONFIG_SYS_IMMR, 3);
450 clrbits_be32(&iop->ppar, (SDA_MASK | SCL_MASK));
451 clrbits_be32(&iop->podr, (SDA_MASK | SCL_MASK));
453 setbits_be32(&iop->ppar, (SDA_MASK | SCL_MASK));
454 clrbits_be32(&iop->pdir, (SDA_MASK | SCL_MASK));
455 setbits_be32(&iop->podr, (SDA_MASK | SCL_MASK));
461 #if !defined(CONFIG_MPC83xx)
462 static void i2c_write_start_seq(void)
465 udelay(DELAY_HALF_PERIOD);
467 udelay(DELAY_HALF_PERIOD);
469 udelay(DELAY_HALF_PERIOD);
471 udelay(DELAY_HALF_PERIOD);
475 * I2C is a synchronous protocol and resets of the processor in the middle
476 * of an access can block the I2C Bus until a powerdown of the full unit is
477 * done. This function toggles the SCL until the SCL and SCA line are
478 * released, but max. 16 times, after this a I2C start-sequence is sent.
479 * This I2C Deblocking mechanism was developed by Keymile in association
480 * with Anatech and Atmel in 1998.
482 static int i2c_make_abort(void)
485 #if defined(CONFIG_HARD_I2C) && !defined(MACH_TYPE_KM_KIRKWOOD)
486 immap_t *immap = (immap_t *)CONFIG_SYS_IMMR ;
487 i2c8260_t *i2c = (i2c8260_t *)&immap->im_i2c;
490 * disable I2C controller first, otherwhise it thinks we want to
491 * talk to the slave port...
493 clrbits_8(&i2c->i2c_i2mod, 0x01);
495 /* Set the PortPins to GPIO */
509 udelay(DELAY_ABORT_SEQ);
511 udelay(DELAY_ABORT_SEQ);
512 scl_state = get_scl();
513 sda_state = get_sda();
514 if (scl_state && sda_state) {
521 for (i = 0; i < 5; i++)
522 i2c_write_start_seq();
524 /* respect stop setup time */
525 udelay(DELAY_ABORT_SEQ);
527 udelay(DELAY_ABORT_SEQ);
531 #if defined(CONFIG_HARD_I2C)
532 /* Set the PortPins back to use for I2C */
539 #if defined(CONFIG_MPC83xx)
540 static void i2c_write_start_seq(void)
543 dev = (struct fsl_i2c *) (CONFIG_SYS_IMMR + CONFIG_SYS_I2C_OFFSET);
544 udelay(DELAY_ABORT_SEQ);
545 out_8(&dev->cr, (I2C_CR_MEN | I2C_CR_MSTA));
546 udelay(DELAY_ABORT_SEQ);
547 out_8(&dev->cr, (I2C_CR_MEN));
550 static int i2c_make_abort(void)
553 dev = (struct fsl_i2c *) (CONFIG_SYS_IMMR + CONFIG_SYS_I2C_OFFSET);
560 /* wait after each operation to finsh with a delay */
561 out_8(&dev->cr, (I2C_CR_MSTA));
562 udelay(DELAY_ABORT_SEQ);
563 out_8(&dev->cr, (I2C_CR_MEN | I2C_CR_MSTA));
564 udelay(DELAY_ABORT_SEQ);
565 dummy = in_8(&dev->dr);
566 udelay(DELAY_ABORT_SEQ);
567 last = in_8(&dev->dr);
571 * do read until the last bit is 1, but stop if the full eeprom is
574 while (((last & 0x01) != 0x01) &&
575 (nbr_read < CONFIG_SYS_IVM_EEPROM_MAX_LEN)) {
576 udelay(DELAY_ABORT_SEQ);
577 last = in_8(&dev->dr);
580 if ((last & 0x01) != 0x01)
582 if ((last != 0xff) || (nbr_read > 1))
583 printf("[INFO] i2c abort after %d bytes (0x%02x)\n",
585 udelay(DELAY_ABORT_SEQ);
586 out_8(&dev->cr, (I2C_CR_MEN));
587 udelay(DELAY_ABORT_SEQ);
588 /* clear status reg */
591 for (i = 0; i < 5; i++)
592 i2c_write_start_seq();
594 printf("[ERROR] i2c abort failed after %d bytes (0x%02x)\n",
602 * i2c_init_board - reset i2c bus. When the board is powercycled during a
603 * bus transfer it might hang; for details see doc/I2C_Edge_Conditions.
605 void i2c_init_board(void)
607 /* Now run the AbortSequence() */
613 #if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT)
614 int fdt_set_node_and_value(void *blob,
623 nodeoffset = fdt_path_offset(blob, nodename);
624 if (nodeoffset >= 0) {
625 ret = fdt_setprop(blob, nodeoffset, regname, var,
628 printf("ft_blob_update(): cannot set %s/%s "
629 "property err:%s\n", nodename, regname,
632 printf("ft_blob_update(): cannot find %s node "
633 "err:%s\n", nodename, fdt_strerror(nodeoffset));
638 int fdt_get_node_and_value(void *blob,
646 nodeoffset = fdt_path_offset(blob, nodename);
647 if (nodeoffset >= 0) {
648 *var = (void *)fdt_getprop(blob, nodeoffset, propname, &len);
651 printf("%s no value\n", __func__);
653 } else if (len > 0) {
656 printf("libfdt fdt_getprop(): %s\n",
661 printf("%s: cannot find %s node err:%s\n", __func__,
662 nodename, fdt_strerror(nodeoffset));
668 #if !defined(MACH_TYPE_KM_KIRKWOOD)
669 int ethernet_present(void)
671 struct km_bec_fpga *base =
672 (struct km_bec_fpga *)CONFIG_SYS_KMBEC_FPGA_BASE;
674 return in_8(&base->bprth) & PIGGY_PRESENT;
678 int board_eth_init(bd_t *bis)
680 #ifdef CONFIG_KEYMILE_HDLC_ENET
681 (void)keymile_hdlc_enet_initialize(bis);
683 if (ethernet_present())
684 return cpu_eth_init(bis);