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Heiko Schocherc2485362008-10-15 09:39:08 +02001/*
2 * (C) Copyright 2008
3 * Heiko Schocher, DENX Software Engineering, hs@denx.de.
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
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.
12 *
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.
17 *
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,
21 * MA 02111-1307 USA
22 */
23
24#include <common.h>
Heiko Schocher210c8c02008-11-21 08:29:40 +010025#if defined(CONFIG_MGCOGE)
Heiko Schocherc2485362008-10-15 09:39:08 +020026#include <mpc8260.h>
Heiko Schocher210c8c02008-11-21 08:29:40 +010027#endif
Heiko Schocherc2485362008-10-15 09:39:08 +020028#include <ioports.h>
29#include <malloc.h>
Heiko Schocher8f64da72008-10-15 09:41:00 +020030#include <hush.h>
Heiko Schocher210c8c02008-11-21 08:29:40 +010031#include <net.h>
32#include <asm/io.h>
Heiko Schocherc2485362008-10-15 09:39:08 +020033
34#if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT)
35#include <libfdt.h>
36#endif
37
38#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
39#include <i2c.h>
Heiko Schocherc2485362008-10-15 09:39:08 +020040
41extern int i2c_soft_read_pin (void);
42
Heiko Schocher8f64da72008-10-15 09:41:00 +020043int ivm_calc_crc (unsigned char *buf, int len)
44{
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};
50
51 unsigned short crc = 0; /* final result */
52 unsigned short r1 = 0; /* temp */
53 unsigned char byte = 0; /* input buffer */
54 int i;
55
56 /* calculate CRC from array data */
57 for (i = 0; i < len; i++) {
58 byte = buf[i];
59
60 /* lower 4 bits */
61 r1 = crc_tab[crc & 0xF];
62 crc = ((crc) >> 4) & 0x0FFF;
63 crc = crc ^ r1 ^ crc_tab[byte & 0xF];
64
65 /* upper 4 bits */
66 r1 = crc_tab[crc & 0xF];
67 crc = (crc >> 4) & 0x0FFF;
68 crc = crc ^ r1 ^ crc_tab[(byte >> 4) & 0xF];
69 }
70 return crc;
71}
72
73static int ivm_set_value (char *name, char *value)
74{
75 char tempbuf[256];
76
77 if (value != NULL) {
78 sprintf (tempbuf, "%s=%s", name, value);
79 return set_local_var (tempbuf, 0);
80 } else {
81 unset_local_var (name);
82 }
83 return 0;
84}
85
86static int ivm_get_value (unsigned char *buf, int len, char *name, int off,
87 int check)
88{
89 unsigned short val;
90 unsigned char valbuf[30];
91
92 if ((buf[off + 0] != buf[off + 2]) &&
93 (buf[off + 2] != buf[off + 4])) {
94 printf ("%s Error corrupted %s\n", __FUNCTION__, name);
95 val = -1;
96 } else {
97 val = buf[off + 0] + (buf[off + 1] << 8);
98 if ((val == 0) && (check == 1))
99 val = -1;
100 }
101 sprintf ((char *)valbuf, "%x", val);
102 ivm_set_value (name, (char *)valbuf);
103 return val;
104}
105
106#define INVENTORYBLOCKSIZE 0x100
107#define INVENTORYDATAADDRESS 0x21
108#define INVENTORYDATASIZE (INVENTORYBLOCKSIZE - INVENTORYDATAADDRESS - 3)
109
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
122
123static char convert_char (char c)
124{
125 return (c < ' ' || c > '~') ? '.' : c;
126}
127
128static int ivm_findinventorystring (int type,
129 unsigned char* const string,
130 unsigned long maxlen,
131 unsigned char *buf)
132{
133 int xcode = 0;
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 */
139
140 memset(string, '\0', maxlen);
141 switch (type) {
142 case IVM_POS_SYMBOL_ONLY:
143 nr = 0;
144 stop= 1;
145 break;
146 default:
147 nr = type;
148 stop = 0;
149 }
150
151 /* Look for the requested number of CR. */
152 while ((cr != nr) && (addr < INVENTORYDATASIZE)) {
153 if ((buf[addr] == '\r')) {
154 cr++;
155 }
156 addr++;
157 }
158
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++)
167 {
168 size += sprintf((char *)string + size, "%c",
169 convert_char (buf[addr]));
170 }
171
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) {
176 xcode = -1;
177 printf ("Error end of string not found\n");
178 } else if ((size >= (maxlen - 1)) &&
179 (buf[addr] != '\r')) {
180 xcode = -1;
181 printf ("string too long till next CR\n");
182 }
183 } else {
184 /* some CR are missing...
185 * the inventory data is most probably corrupted */
186 xcode = -1;
187 printf ("not enough cr found\n");
188 }
189 return xcode;
190}
191
192#define GET_STRING(name, which, len) \
193 if (ivm_findinventorystring (which, valbuf, len, buf) == 0) { \
194 ivm_set_value (name, (char *)valbuf); \
195 }
196
197static int ivm_check_crc (unsigned char *buf, int block)
198{
199 unsigned long crc;
200 unsigned long crceeprom;
201
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200202 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);
Heiko Schocher8f64da72008-10-15 09:41:00 +0200205 if (crc != crceeprom) {
206 printf ("Error CRC Block: %d EEprom: calculated: %lx EEprom: %lx\n",
207 block, crc, crceeprom);
208 return -1;
209 }
210 return 0;
211}
212
213static int ivm_analyze_block2 (unsigned char *buf, int len)
214{
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200215 unsigned char valbuf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN];
Heiko Schocher8f64da72008-10-15 09:41:00 +0200216 unsigned long count;
217
218 /* IVM_MacAddress */
219 sprintf ((char *)valbuf, "%02X:%02X:%02X:%02X:%02X:%02X",
220 buf[1],
221 buf[2],
222 buf[3],
223 buf[4],
224 buf[5],
225 buf[6]);
226 ivm_set_value ("IVM_MacAddress", (char *)valbuf);
227 if (getenv ("ethaddr") == NULL)
228 setenv ((char *)"ethaddr", (char *)valbuf);
229 /* IVM_MacCount */
230 count = (buf[10] << 24) +
231 (buf[11] << 16) +
232 (buf[12] << 8) +
233 buf[13];
234 if (count == 0xffffffff)
235 count = 1;
236 sprintf ((char *)valbuf, "%lx", count);
237 ivm_set_value ("IVM_MacCount", (char *)valbuf);
238 return 0;
239}
240
241int ivm_analyze_eeprom (unsigned char *buf, int len)
242{
243 unsigned short val;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200244 unsigned char valbuf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN];
Heiko Schocher8f64da72008-10-15 09:41:00 +0200245 unsigned char *tmp;
246
247 if (ivm_check_crc (buf, 0) != 0)
248 return -1;
249
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200250 ivm_get_value (buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN, "IVM_BoardId", 0, 1);
251 val = ivm_get_value (buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN, "IVM_HWKey", 6, 1);
Heiko Schocher8f64da72008-10-15 09:41:00 +0200252 if (val != 0xffff) {
253 sprintf ((char *)valbuf, "%x", ((val /100) % 10));
254 ivm_set_value ("IVM_HWVariant", (char *)valbuf);
255 sprintf ((char *)valbuf, "%x", (val % 100));
256 ivm_set_value ("IVM_HWVersion", (char *)valbuf);
257 }
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200258 ivm_get_value (buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN, "IVM_Functions", 12, 0);
Heiko Schocher8f64da72008-10-15 09:41:00 +0200259
260 GET_STRING("IVM_Symbol", IVM_POS_SYMBOL_ONLY, 8)
261 GET_STRING("IVM_DeviceName", IVM_POS_SHORT_TEXT, 64)
262 tmp = (unsigned char *) getenv("IVM_DeviceName");
263 if (tmp) {
264 int len = strlen ((char *)tmp);
265 int i = 0;
266
267 while (i < len) {
268 if (tmp[i] == ';') {
269 ivm_set_value ("IVM_ShortText", (char *)&tmp[i + 1]);
270 break;
271 }
272 i++;
273 }
274 if (i >= len)
275 ivm_set_value ("IVM_ShortText", NULL);
276 } else {
277 ivm_set_value ("IVM_ShortText", NULL);
278 }
279 GET_STRING("IVM_ManufacturerID", IVM_POS_MANU_ID, 32)
280 GET_STRING("IVM_ManufacturerSerialNumber", IVM_POS_MANU_SERIAL, 20)
281 GET_STRING("IVM_ManufacturerPartNumber", IVM_POS_PART_NUMBER, 32)
282 GET_STRING("IVM_ManufacturerBuildState", IVM_POS_BUILD_STATE, 32)
283 GET_STRING("IVM_SupplierPartNumber", IVM_POS_SUPPLIER_PART_NUMBER, 32)
284 GET_STRING("IVM_DelieveryDate", IVM_POS_DELIVERY_DATE, 32)
285 GET_STRING("IVM_SupplierBuildState", IVM_POS_SUPPLIER_BUILD_STATE, 32)
286 GET_STRING("IVM_CustomerID", IVM_POS_CUSTOMER_ID, 32)
287 GET_STRING("IVM_CustomerProductID", IVM_POS_CUSTOMER_PROD_ID, 32)
288
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200289 if (ivm_check_crc (&buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN * 2], 2) != 0)
Heiko Schocher8f64da72008-10-15 09:41:00 +0200290 return -2;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200291 ivm_analyze_block2 (&buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN * 2], CONFIG_SYS_IVM_EEPROM_PAGE_LEN);
Heiko Schocher8f64da72008-10-15 09:41:00 +0200292
293 return 0;
294}
295
296int ivm_read_eeprom (void)
297{
298 I2C_MUX_DEVICE *dev = NULL;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200299 uchar i2c_buffer[CONFIG_SYS_IVM_EEPROM_MAX_LEN];
Heiko Schocher8f64da72008-10-15 09:41:00 +0200300 uchar *buf;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200301 unsigned dev_addr = CONFIG_SYS_IVM_EEPROM_ADR;
Heiko Schocher8f64da72008-10-15 09:41:00 +0200302
303 /* First init the Bus, select the Bus */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200304#if defined(CONFIG_SYS_I2C_IVM_BUS)
305 dev = i2c_mux_ident_muxstring ((uchar *)CONFIG_SYS_I2C_IVM_BUS);
Heiko Schocher8f64da72008-10-15 09:41:00 +0200306#else
307 buf = (unsigned char *) getenv ("EEprom_ivm");
308 if (buf != NULL)
309 dev = i2c_mux_ident_muxstring (buf);
310#endif
311 if (dev == NULL) {
312 printf ("Error couldnt add Bus for IVM\n");
313 return -1;
314 }
315 i2c_set_bus_num (dev->busid);
316
317 buf = (unsigned char *) getenv ("EEprom_ivm_addr");
318 if (buf != NULL)
319 dev_addr = simple_strtoul ((char *)buf, NULL, 16);
320
Heiko Schocher19f0e932009-02-24 11:30:34 +0100321 if (i2c_read(dev_addr, 0, 1, i2c_buffer, CONFIG_SYS_IVM_EEPROM_MAX_LEN) != 0) {
Heiko Schocher8f64da72008-10-15 09:41:00 +0200322 printf ("Error reading EEprom\n");
323 return -2;
324 }
325
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200326 return ivm_analyze_eeprom (i2c_buffer, CONFIG_SYS_IVM_EEPROM_MAX_LEN);
Heiko Schocher8f64da72008-10-15 09:41:00 +0200327}
328
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200329#if defined(CONFIG_SYS_I2C_INIT_BOARD)
Heiko Schocherc2485362008-10-15 09:39:08 +0200330#define DELAY_ABORT_SEQ 62
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200331#define DELAY_HALF_PERIOD (500 / (CONFIG_SYS_I2C_SPEED / 1000))
Heiko Schocherc2485362008-10-15 09:39:08 +0200332
333#if defined(CONFIG_MGCOGE)
334#define SDA_MASK 0x00010000
335#define SCL_MASK 0x00020000
336static void set_pin (int state, unsigned long mask)
337{
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200338 volatile ioport_t *iop = ioport_addr ((immap_t *)CONFIG_SYS_IMMR, 3);
Heiko Schocherc2485362008-10-15 09:39:08 +0200339
340 if (state)
341 iop->pdat |= (mask);
342 else
343 iop->pdat &= ~(mask);
344
345 iop->pdir |= (mask);
346}
347
348static int get_pin (unsigned long mask)
349{
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200350 volatile ioport_t *iop = ioport_addr ((immap_t *)CONFIG_SYS_IMMR, 3);
Heiko Schocherc2485362008-10-15 09:39:08 +0200351
352 iop->pdir &= ~(mask);
353 return (0 != (iop->pdat & (mask)));
354}
355
356static void set_sda (int state)
357{
358 set_pin (state, SDA_MASK);
359}
360
361static void set_scl (int state)
362{
363 set_pin (state, SCL_MASK);
364}
365
366static int get_sda (void)
367{
368 return get_pin (SDA_MASK);
369}
370
371static int get_scl (void)
372{
373 return get_pin (SCL_MASK);
374}
375
376#if defined(CONFIG_HARD_I2C)
377static void setports (int gpio)
378{
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200379 volatile ioport_t *iop = ioport_addr ((immap_t *)CONFIG_SYS_IMMR, 3);
Heiko Schocherc2485362008-10-15 09:39:08 +0200380
381 if (gpio) {
382 iop->ppar &= ~(SDA_MASK | SCL_MASK);
383 iop->podr &= ~(SDA_MASK | SCL_MASK);
384 } else {
385 iop->ppar |= (SDA_MASK | SCL_MASK);
386 iop->pdir &= ~(SDA_MASK | SCL_MASK);
387 iop->podr |= (SDA_MASK | SCL_MASK);
388 }
389}
390#endif
391#endif
392
Heiko Schocherd0449542009-03-12 07:37:28 +0100393#if defined(CONFIG_KM8XX)
Heiko Schocherc2485362008-10-15 09:39:08 +0200394static void set_sda (int state)
395{
396 I2C_SDA(state);
397}
398
399static void set_scl (int state)
400{
401 I2C_SCL(state);
402}
403
404static int get_sda (void)
405{
Heiko Schochera21ca952008-10-17 13:52:51 +0200406 return I2C_READ;
Heiko Schocherc2485362008-10-15 09:39:08 +0200407}
408
409static int get_scl (void)
410{
411 int val;
412
413 *(unsigned short *)(I2C_BASE_DIR) &= ~SCL_CONF;
414 udelay (1);
415 val = *(unsigned char *)(I2C_BASE_PORT);
416
417 return ((val & SCL_BIT) == SCL_BIT);
418}
419
420#endif
421
422static void writeStartSeq (void)
423{
424 set_sda (1);
425 udelay (DELAY_HALF_PERIOD);
426 set_scl (1);
427 udelay (DELAY_HALF_PERIOD);
428 set_sda (0);
429 udelay (DELAY_HALF_PERIOD);
430 set_scl (0);
431 udelay (DELAY_HALF_PERIOD);
432}
433
434/* I2C is a synchronous protocol and resets of the processor in the middle
435 of an access can block the I2C Bus until a powerdown of the full unit is
436 done. This function toggles the SCL until the SCL and SCA line are
437 released, but max. 16 times, after this a I2C start-sequence is sent.
438 This I2C Deblocking mechanism was developed by Keymile in association
439 with Anatech and Atmel in 1998.
440 */
441static int i2c_make_abort (void)
442{
443 int scl_state = 0;
444 int sda_state = 0;
445 int i = 0;
446 int ret = 0;
447
448 if (!get_sda ()) {
449 ret = -1;
450 while (i < 16) {
451 i++;
452 set_scl (0);
453 udelay (DELAY_ABORT_SEQ);
454 set_scl (1);
455 udelay (DELAY_ABORT_SEQ);
456 scl_state = get_scl ();
457 sda_state = get_sda ();
458 if (scl_state && sda_state) {
459 ret = 0;
460 break;
461 }
462 }
463 }
464 if (ret == 0) {
465 for (i =0; i < 5; i++) {
466 writeStartSeq ();
467 }
468 }
469 get_sda ();
470 return ret;
471}
472
473/**
474 * i2c_init_board - reset i2c bus. When the board is powercycled during a
475 * bus transfer it might hang; for details see doc/I2C_Edge_Conditions.
476 */
477void i2c_init_board(void)
478{
479#if defined(CONFIG_HARD_I2C)
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200480 volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR ;
Heiko Schocherc2485362008-10-15 09:39:08 +0200481 volatile i2c8260_t *i2c = (i2c8260_t *)&immap->im_i2c;
482
483 /* disable I2C controller first, otherwhise it thinks we want to */
484 /* talk to the slave port... */
485 i2c->i2c_i2mod &= ~0x01;
486
487 /* Set the PortPins to GPIO */
488 setports (1);
489#endif
490
491 /* Now run the AbortSequence() */
492 i2c_make_abort ();
493
494#if defined(CONFIG_HARD_I2C)
495 /* Set the PortPins back to use for I2C */
496 setports (0);
497#endif
498}
499#endif
Heiko Schocher210c8c02008-11-21 08:29:40 +0100500#endif
Heiko Schocher6250f0f2008-10-17 16:11:52 +0200501
502#if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT)
503int fdt_set_node_and_value (void *blob,
504 char *nodename,
505 char *regname,
506 void *var,
507 int size)
508{
509 int ret = 0;
510 int nodeoffset = 0;
511
512 nodeoffset = fdt_path_offset (blob, nodename);
513 if (nodeoffset >= 0) {
514 ret = fdt_setprop (blob, nodeoffset, regname, var,
515 size);
516 if (ret < 0)
517 printf("ft_blob_update(): cannot set %s/%s "
518 "property err:%s\n", nodename, regname,
519 fdt_strerror (ret));
520 } else {
521 printf("ft_blob_update(): cannot find %s node "
522 "err:%s\n", nodename, fdt_strerror (nodeoffset));
523 }
524 return ret;
525}
526#endif
Heiko Schocher210c8c02008-11-21 08:29:40 +0100527
528int ethernet_present (void)
529{
530 return (in_8((u8 *)CONFIG_SYS_PIGGY_BASE + CONFIG_SYS_SLOT_ID_OFF) & 0x80);
531}
532
533int board_eth_init (bd_t *bis)
534{
535#ifdef CONFIG_KEYMILE_HDLC_ENET
536 (void)keymile_hdlc_enet_initialize (bis);
537#endif
538 if (ethernet_present ()) {
539 return -1;
540 }
541 return 0;
542}