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7d393aed WD |
1 | /* |
2 | * (C) Copyright 2001 | |
3 | * Denis Peter, MPL AG Switzerland, d.peter@mpl.ch | |
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 | * TODO: clean-up | |
25 | */ | |
26 | ||
27 | #include <common.h> | |
28 | #include "pip405.h" | |
29 | #include <asm/processor.h> | |
30 | #include <i2c.h> | |
28c34504 | 31 | #include <stdio_dev.h> |
7d393aed WD |
32 | #include "../common/isa.h" |
33 | #include "../common/common_util.h" | |
34 | ||
d87080b7 WD |
35 | DECLARE_GLOBAL_DATA_PTR; |
36 | ||
7d393aed WD |
37 | #undef SDRAM_DEBUG |
38 | ||
39 | #define FALSE 0 | |
40 | #define TRUE 1 | |
41 | ||
42 | /* stdlib.h causes some compatibility problems; should fixe these! -- wd */ | |
43 | #ifndef __ldiv_t_defined | |
44 | typedef struct { | |
45 | long int quot; /* Quotient */ | |
46 | long int rem; /* Remainder */ | |
47 | } ldiv_t; | |
48 | extern ldiv_t ldiv (long int __numer, long int __denom); | |
49 | ||
50 | # define __ldiv_t_defined 1 | |
51 | #endif | |
52 | ||
53 | ||
54 | typedef enum { | |
55 | SDRAM_NO_ERR, | |
56 | SDRAM_SPD_COMM_ERR, | |
57 | SDRAM_SPD_CHKSUM_ERR, | |
58 | SDRAM_UNSUPPORTED_ERR, | |
59 | SDRAM_UNKNOWN_ERR | |
60 | } SDRAM_ERR; | |
61 | ||
62 | typedef struct { | |
63 | const unsigned char mode; | |
64 | const unsigned char row; | |
65 | const unsigned char col; | |
66 | const unsigned char bank; | |
67 | } SDRAM_SETUP; | |
68 | ||
69 | static const SDRAM_SETUP sdram_setup_table[] = { | |
70 | {1, 11, 9, 2}, | |
71 | {1, 11, 10, 2}, | |
72 | {2, 12, 9, 4}, | |
73 | {2, 12, 10, 4}, | |
74 | {3, 13, 9, 4}, | |
75 | {3, 13, 10, 4}, | |
76 | {3, 13, 11, 4}, | |
77 | {4, 12, 8, 2}, | |
78 | {4, 12, 8, 4}, | |
79 | {5, 11, 8, 2}, | |
80 | {5, 11, 8, 4}, | |
81 | {6, 13, 8, 2}, | |
82 | {6, 13, 8, 4}, | |
83 | {7, 13, 9, 2}, | |
84 | {7, 13, 10, 2}, | |
85 | {0, 0, 0, 0} | |
86 | }; | |
87 | ||
88 | static const unsigned char cal_indextable[] = { | |
89 | 9, 23, 25 | |
90 | }; | |
91 | ||
92 | ||
93 | /* | |
94 | * translate ns.ns/10 coding of SPD timing values | |
95 | * into 10 ps unit values | |
96 | */ | |
97 | ||
98 | unsigned short NS10to10PS (unsigned char spd_byte, unsigned char spd_version) | |
99 | { | |
100 | unsigned short ns, ns10; | |
101 | ||
102 | /* isolate upper nibble */ | |
103 | ns = (spd_byte >> 4) & 0x0F; | |
104 | /* isolate lower nibble */ | |
105 | ns10 = (spd_byte & 0x0F); | |
106 | ||
107 | return (ns * 100 + ns10 * 10); | |
108 | } | |
109 | ||
110 | /* | |
111 | * translate ns.ns/4 coding of SPD timing values | |
112 | * into 10 ps unit values | |
113 | */ | |
114 | ||
115 | unsigned short NS4to10PS (unsigned char spd_byte, unsigned char spd_version) | |
116 | { | |
117 | unsigned short ns, ns4; | |
118 | ||
119 | /* isolate upper 6 bits */ | |
120 | ns = (spd_byte >> 2) & 0x3F; | |
121 | /* isloate lower 2 bits */ | |
122 | ns4 = (spd_byte & 0x03); | |
123 | ||
124 | return (ns * 100 + ns4 * 25); | |
125 | } | |
126 | ||
127 | /* | |
128 | * translate ns coding of SPD timing values | |
129 | * into 10 ps unit values | |
130 | */ | |
131 | ||
132 | unsigned short NSto10PS (unsigned char spd_byte) | |
133 | { | |
134 | return (spd_byte * 100); | |
135 | } | |
136 | ||
137 | void SDRAM_err (const char *s) | |
138 | { | |
139 | #ifndef SDRAM_DEBUG | |
7d393aed WD |
140 | (void) get_clocks (); |
141 | gd->baudrate = 9600; | |
142 | serial_init (); | |
143 | #endif | |
144 | serial_puts ("\n"); | |
145 | serial_puts (s); | |
146 | serial_puts ("\n enable SDRAM_DEBUG for more info\n"); | |
147 | for (;;); | |
148 | } | |
149 | ||
150 | ||
151 | #ifdef SDRAM_DEBUG | |
152 | ||
153 | void write_hex (unsigned char i) | |
154 | { | |
155 | char cc; | |
156 | ||
157 | cc = i >> 4; | |
158 | cc &= 0xf; | |
159 | if (cc > 9) | |
160 | serial_putc (cc + 55); | |
161 | else | |
162 | serial_putc (cc + 48); | |
163 | cc = i & 0xf; | |
164 | if (cc > 9) | |
165 | serial_putc (cc + 55); | |
166 | else | |
167 | serial_putc (cc + 48); | |
168 | } | |
169 | ||
170 | void write_4hex (unsigned long val) | |
171 | { | |
172 | write_hex ((unsigned char) (val >> 24)); | |
173 | write_hex ((unsigned char) (val >> 16)); | |
174 | write_hex ((unsigned char) (val >> 8)); | |
175 | write_hex ((unsigned char) val); | |
176 | } | |
177 | ||
178 | #endif | |
179 | ||
c837dcb1 | 180 | int board_early_init_f (void) |
7d393aed | 181 | { |
7d393aed | 182 | unsigned char datain[128]; |
77ddac94 | 183 | unsigned long sdram_size = 0; |
7d393aed WD |
184 | SDRAM_SETUP *t = (SDRAM_SETUP *) sdram_setup_table; |
185 | unsigned long memclk; | |
186 | unsigned long tmemclk = 0; | |
187 | unsigned long tmp, bank, baseaddr, bank_size; | |
188 | unsigned short i; | |
189 | unsigned char rows, cols, banks, sdram_banks, density; | |
190 | unsigned char supported_cal, trp_clocks, trcd_clocks, tras_clocks, | |
4e11c351 | 191 | trc_clocks; |
7d393aed WD |
192 | unsigned char cal_index, cal_val, spd_version, spd_chksum; |
193 | unsigned char buf[8]; | |
4e11c351 SR |
194 | #ifdef SDRAM_DEBUG |
195 | unsigned char tctp_clocks; | |
196 | #endif | |
197 | ||
7205e407 | 198 | /* set up the config port */ |
d1c3b275 SR |
199 | mtdcr (EBC0_CFGADDR, PB7AP); |
200 | mtdcr (EBC0_CFGDATA, CONFIG_PORT_AP); | |
201 | mtdcr (EBC0_CFGADDR, PB7CR); | |
202 | mtdcr (EBC0_CFGDATA, CONFIG_PORT_CR); | |
7d393aed WD |
203 | |
204 | memclk = get_bus_freq (tmemclk); | |
205 | tmemclk = 1000000000 / (memclk / 100); /* in 10 ps units */ | |
206 | ||
207 | #ifdef SDRAM_DEBUG | |
208 | (void) get_clocks (); | |
209 | gd->baudrate = 9600; | |
210 | serial_init (); | |
211 | serial_puts ("\nstart SDRAM Setup\n"); | |
212 | #endif | |
213 | ||
214 | /* Read Serial Presence Detect Information */ | |
6d0f6bcf | 215 | i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); |
7d393aed WD |
216 | for (i = 0; i < 128; i++) |
217 | datain[i] = 127; | |
218 | i2c_read(SPD_EEPROM_ADDRESS,0,1,datain,128); | |
219 | #ifdef SDRAM_DEBUG | |
220 | serial_puts ("\ni2c_read returns "); | |
221 | write_hex (i); | |
222 | serial_puts ("\n"); | |
223 | #endif | |
224 | ||
225 | #ifdef SDRAM_DEBUG | |
226 | for (i = 0; i < 128; i++) { | |
227 | write_hex (datain[i]); | |
228 | serial_puts (" "); | |
229 | if (((i + 1) % 16) == 0) | |
230 | serial_puts ("\n"); | |
231 | } | |
232 | serial_puts ("\n"); | |
233 | #endif | |
234 | spd_chksum = 0; | |
235 | for (i = 0; i < 63; i++) { | |
236 | spd_chksum += datain[i]; | |
237 | } /* endfor */ | |
238 | if (datain[63] != spd_chksum) { | |
239 | #ifdef SDRAM_DEBUG | |
240 | serial_puts ("SPD chksum: 0x"); | |
241 | write_hex (datain[63]); | |
242 | serial_puts (" != calc. chksum: 0x"); | |
243 | write_hex (spd_chksum); | |
244 | serial_puts ("\n"); | |
245 | #endif | |
246 | SDRAM_err ("SPD checksum Error"); | |
247 | } | |
248 | /* SPD seems to be ok, use it */ | |
249 | ||
250 | /* get SPD version */ | |
251 | spd_version = datain[62]; | |
252 | ||
253 | /* do some sanity checks on the kind of RAM */ | |
254 | if ((datain[0] < 0x80) || /* less than 128 valid bytes in SPD */ | |
255 | (datain[2] != 0x04) || /* if not SDRAM */ | |
256 | (!((datain[6] == 0x40) || (datain[6] == 0x48))) || /* or not (64 Bit or 72 Bit) */ | |
257 | (datain[7] != 0x00) || (datain[8] != 0x01) || /* or not LVTTL signal levels */ | |
8ed44d91 | 258 | (datain[126] == 0x66)) /* or a 66MHz modules */ |
7d393aed WD |
259 | SDRAM_err ("unsupported SDRAM"); |
260 | #ifdef SDRAM_DEBUG | |
261 | serial_puts ("SDRAM sanity ok\n"); | |
262 | #endif | |
263 | ||
264 | /* get number of rows/cols/banks out of byte 3+4+5 */ | |
265 | rows = datain[3]; | |
266 | cols = datain[4]; | |
267 | banks = datain[5]; | |
268 | ||
269 | /* get number of SDRAM banks out of byte 17 and | |
270 | supported CAS latencies out of byte 18 */ | |
271 | sdram_banks = datain[17]; | |
272 | supported_cal = datain[18] & ~0x81; | |
273 | ||
274 | while (t->mode != 0) { | |
275 | if ((t->row == rows) && (t->col == cols) | |
276 | && (t->bank == sdram_banks)) | |
277 | break; | |
278 | t++; | |
279 | } /* endwhile */ | |
280 | ||
281 | #ifdef SDRAM_DEBUG | |
282 | serial_puts ("rows: "); | |
283 | write_hex (rows); | |
284 | serial_puts (" cols: "); | |
285 | write_hex (cols); | |
286 | serial_puts (" banks: "); | |
287 | write_hex (banks); | |
288 | serial_puts (" mode: "); | |
289 | write_hex (t->mode); | |
290 | serial_puts ("\n"); | |
291 | #endif | |
292 | if (t->mode == 0) | |
293 | SDRAM_err ("unsupported SDRAM"); | |
294 | /* get tRP, tRCD, tRAS and density from byte 27+29+30+31 */ | |
295 | #ifdef SDRAM_DEBUG | |
296 | serial_puts ("tRP: "); | |
297 | write_hex (datain[27]); | |
298 | serial_puts ("\ntRCD: "); | |
299 | write_hex (datain[29]); | |
300 | serial_puts ("\ntRAS: "); | |
301 | write_hex (datain[30]); | |
302 | serial_puts ("\n"); | |
303 | #endif | |
304 | ||
305 | trp_clocks = (NSto10PS (datain[27]) + (tmemclk - 1)) / tmemclk; | |
306 | trcd_clocks = (NSto10PS (datain[29]) + (tmemclk - 1)) / tmemclk; | |
307 | tras_clocks = (NSto10PS (datain[30]) + (tmemclk - 1)) / tmemclk; | |
308 | density = datain[31]; | |
309 | ||
310 | /* trc_clocks is sum of trp_clocks + tras_clocks */ | |
311 | trc_clocks = trp_clocks + tras_clocks; | |
4e11c351 SR |
312 | |
313 | #ifdef SDRAM_DEBUG | |
7d393aed WD |
314 | /* ctp = ((trp + tras) - trp - trcd) => tras - trcd */ |
315 | tctp_clocks = | |
316 | ((NSto10PS (datain[30]) - NSto10PS (datain[29])) + | |
317 | (tmemclk - 1)) / tmemclk; | |
318 | ||
7d393aed WD |
319 | serial_puts ("c_RP: "); |
320 | write_hex (trp_clocks); | |
321 | serial_puts ("\nc_RCD: "); | |
322 | write_hex (trcd_clocks); | |
323 | serial_puts ("\nc_RAS: "); | |
324 | write_hex (tras_clocks); | |
325 | serial_puts ("\nc_RC: (RP+RAS): "); | |
326 | write_hex (trc_clocks); | |
327 | serial_puts ("\nc_CTP: ((RP+RAS)-RP-RCD): "); | |
328 | write_hex (tctp_clocks); | |
329 | serial_puts ("\nt_CTP: RAS - RCD: "); | |
330 | write_hex ((unsigned | |
331 | char) ((NSto10PS (datain[30]) - | |
332 | NSto10PS (datain[29])) >> 8)); | |
333 | write_hex ((unsigned char) (NSto10PS (datain[30]) - NSto10PS (datain[29]))); | |
334 | serial_puts ("\ntmemclk: "); | |
335 | write_hex ((unsigned char) (tmemclk >> 8)); | |
336 | write_hex ((unsigned char) (tmemclk)); | |
337 | serial_puts ("\n"); | |
338 | #endif | |
339 | ||
340 | ||
341 | cal_val = 255; | |
342 | for (i = 6, cal_index = 0; (i > 0) && (cal_index < 3); i--) { | |
343 | /* is this CAS latency supported ? */ | |
344 | if ((supported_cal >> i) & 0x01) { | |
345 | buf[0] = datain[cal_indextable[cal_index]]; | |
346 | if (cal_index < 2) { | |
347 | if (NS10to10PS (buf[0], spd_version) <= tmemclk) | |
348 | cal_val = i; | |
349 | } else { | |
350 | /* SPD bytes 25+26 have another format */ | |
351 | if (NS4to10PS (buf[0], spd_version) <= tmemclk) | |
352 | cal_val = i; | |
353 | } /* endif */ | |
354 | cal_index++; | |
355 | } /* endif */ | |
356 | } /* endfor */ | |
357 | #ifdef SDRAM_DEBUG | |
358 | serial_puts ("CAL: "); | |
359 | write_hex (cal_val + 1); | |
360 | serial_puts ("\n"); | |
361 | #endif | |
362 | ||
363 | if (cal_val == 255) | |
364 | SDRAM_err ("unsupported SDRAM"); | |
365 | ||
366 | /* get SDRAM timing register */ | |
95b602ba | 367 | mtdcr (SDRAM0_CFGADDR, SDRAM0_TR); |
d1c3b275 | 368 | tmp = mfdcr (SDRAM0_CFGDATA) & ~0x018FC01F; |
7d393aed WD |
369 | /* insert CASL value */ |
370 | /* tmp |= ((unsigned long)cal_val) << 23; */ | |
371 | tmp |= ((unsigned long) cal_val) << 23; | |
372 | /* insert PTA value */ | |
373 | tmp |= ((unsigned long) (trp_clocks - 1)) << 18; | |
374 | /* insert CTP value */ | |
375 | /* tmp |= ((unsigned long)(trc_clocks - trp_clocks - trcd_clocks - 1)) << 16; */ | |
376 | tmp |= ((unsigned long) (trc_clocks - trp_clocks - trcd_clocks)) << 16; | |
377 | /* insert LDF (always 01) */ | |
378 | tmp |= ((unsigned long) 0x01) << 14; | |
379 | /* insert RFTA value */ | |
380 | tmp |= ((unsigned long) (trc_clocks - 4)) << 2; | |
381 | /* insert RCD value */ | |
382 | tmp |= ((unsigned long) (trcd_clocks - 1)) << 0; | |
383 | ||
384 | #ifdef SDRAM_DEBUG | |
385 | serial_puts ("sdtr: "); | |
386 | write_4hex (tmp); | |
387 | serial_puts ("\n"); | |
388 | #endif | |
389 | ||
390 | /* write SDRAM timing register */ | |
95b602ba | 391 | mtdcr (SDRAM0_CFGADDR, SDRAM0_TR); |
d1c3b275 | 392 | mtdcr (SDRAM0_CFGDATA, tmp); |
6d0f6bcf | 393 | baseaddr = CONFIG_SYS_SDRAM_BASE; |
7d393aed WD |
394 | bank_size = (((unsigned long) density) << 22) / 2; |
395 | /* insert AM value */ | |
396 | tmp = ((unsigned long) t->mode - 1) << 13; | |
397 | /* insert SZ value; */ | |
398 | switch (bank_size) { | |
399 | case 0x00400000: | |
400 | tmp |= ((unsigned long) 0x00) << 17; | |
401 | break; | |
402 | case 0x00800000: | |
403 | tmp |= ((unsigned long) 0x01) << 17; | |
404 | break; | |
405 | case 0x01000000: | |
406 | tmp |= ((unsigned long) 0x02) << 17; | |
407 | break; | |
408 | case 0x02000000: | |
409 | tmp |= ((unsigned long) 0x03) << 17; | |
410 | break; | |
411 | case 0x04000000: | |
412 | tmp |= ((unsigned long) 0x04) << 17; | |
413 | break; | |
414 | case 0x08000000: | |
415 | tmp |= ((unsigned long) 0x05) << 17; | |
416 | break; | |
417 | case 0x10000000: | |
418 | tmp |= ((unsigned long) 0x06) << 17; | |
419 | break; | |
420 | default: | |
421 | SDRAM_err ("unsupported SDRAM"); | |
422 | } /* endswitch */ | |
423 | /* get SDRAM bank 0 register */ | |
95b602ba | 424 | mtdcr (SDRAM0_CFGADDR, SDRAM0_B0CR); |
d1c3b275 | 425 | bank = mfdcr (SDRAM0_CFGDATA) & ~0xFFCEE001; |
7d393aed WD |
426 | bank |= (baseaddr | tmp | 0x01); |
427 | #ifdef SDRAM_DEBUG | |
428 | serial_puts ("bank0: baseaddr: "); | |
429 | write_4hex (baseaddr); | |
430 | serial_puts (" banksize: "); | |
431 | write_4hex (bank_size); | |
432 | serial_puts (" mb0cf: "); | |
433 | write_4hex (bank); | |
434 | serial_puts ("\n"); | |
435 | #endif | |
436 | baseaddr += bank_size; | |
437 | sdram_size += bank_size; | |
438 | ||
439 | /* write SDRAM bank 0 register */ | |
95b602ba | 440 | mtdcr (SDRAM0_CFGADDR, SDRAM0_B0CR); |
d1c3b275 | 441 | mtdcr (SDRAM0_CFGDATA, bank); |
7d393aed WD |
442 | |
443 | /* get SDRAM bank 1 register */ | |
95b602ba | 444 | mtdcr (SDRAM0_CFGADDR, SDRAM0_B1CR); |
d1c3b275 | 445 | bank = mfdcr (SDRAM0_CFGDATA) & ~0xFFCEE001; |
7d393aed WD |
446 | sdram_size = 0; |
447 | ||
448 | #ifdef SDRAM_DEBUG | |
449 | serial_puts ("bank1: baseaddr: "); | |
450 | write_4hex (baseaddr); | |
451 | serial_puts (" banksize: "); | |
452 | write_4hex (bank_size); | |
453 | #endif | |
454 | if (banks == 2) { | |
455 | bank |= (baseaddr | tmp | 0x01); | |
456 | baseaddr += bank_size; | |
457 | sdram_size += bank_size; | |
458 | } /* endif */ | |
459 | #ifdef SDRAM_DEBUG | |
460 | serial_puts (" mb1cf: "); | |
461 | write_4hex (bank); | |
462 | serial_puts ("\n"); | |
463 | #endif | |
464 | /* write SDRAM bank 1 register */ | |
95b602ba | 465 | mtdcr (SDRAM0_CFGADDR, SDRAM0_B1CR); |
d1c3b275 | 466 | mtdcr (SDRAM0_CFGDATA, bank); |
7d393aed WD |
467 | |
468 | /* get SDRAM bank 2 register */ | |
95b602ba | 469 | mtdcr (SDRAM0_CFGADDR, SDRAM0_B2CR); |
d1c3b275 | 470 | bank = mfdcr (SDRAM0_CFGDATA) & ~0xFFCEE001; |
7d393aed WD |
471 | |
472 | bank |= (baseaddr | tmp | 0x01); | |
473 | ||
474 | #ifdef SDRAM_DEBUG | |
475 | serial_puts ("bank2: baseaddr: "); | |
476 | write_4hex (baseaddr); | |
477 | serial_puts (" banksize: "); | |
478 | write_4hex (bank_size); | |
479 | serial_puts (" mb2cf: "); | |
480 | write_4hex (bank); | |
481 | serial_puts ("\n"); | |
482 | #endif | |
483 | ||
484 | baseaddr += bank_size; | |
485 | sdram_size += bank_size; | |
486 | ||
487 | /* write SDRAM bank 2 register */ | |
95b602ba | 488 | mtdcr (SDRAM0_CFGADDR, SDRAM0_B2CR); |
d1c3b275 | 489 | mtdcr (SDRAM0_CFGDATA, bank); |
7d393aed WD |
490 | |
491 | /* get SDRAM bank 3 register */ | |
95b602ba | 492 | mtdcr (SDRAM0_CFGADDR, SDRAM0_B3CR); |
d1c3b275 | 493 | bank = mfdcr (SDRAM0_CFGDATA) & ~0xFFCEE001; |
7d393aed WD |
494 | |
495 | #ifdef SDRAM_DEBUG | |
496 | serial_puts ("bank3: baseaddr: "); | |
497 | write_4hex (baseaddr); | |
498 | serial_puts (" banksize: "); | |
499 | write_4hex (bank_size); | |
500 | #endif | |
501 | ||
502 | if (banks == 2) { | |
503 | bank |= (baseaddr | tmp | 0x01); | |
504 | baseaddr += bank_size; | |
505 | sdram_size += bank_size; | |
506 | } | |
507 | /* endif */ | |
508 | #ifdef SDRAM_DEBUG | |
509 | serial_puts (" mb3cf: "); | |
510 | write_4hex (bank); | |
511 | serial_puts ("\n"); | |
512 | #endif | |
513 | ||
514 | /* write SDRAM bank 3 register */ | |
95b602ba | 515 | mtdcr (SDRAM0_CFGADDR, SDRAM0_B3CR); |
d1c3b275 | 516 | mtdcr (SDRAM0_CFGDATA, bank); |
7d393aed WD |
517 | |
518 | ||
519 | /* get SDRAM refresh interval register */ | |
95b602ba | 520 | mtdcr (SDRAM0_CFGADDR, SDRAM0_RTR); |
d1c3b275 | 521 | tmp = mfdcr (SDRAM0_CFGDATA) & ~0x3FF80000; |
7d393aed WD |
522 | |
523 | if (tmemclk < NSto10PS (16)) | |
524 | tmp |= 0x05F00000; | |
525 | else | |
526 | tmp |= 0x03F80000; | |
527 | ||
528 | /* write SDRAM refresh interval register */ | |
95b602ba | 529 | mtdcr (SDRAM0_CFGADDR, SDRAM0_RTR); |
d1c3b275 | 530 | mtdcr (SDRAM0_CFGDATA, tmp); |
7d393aed WD |
531 | |
532 | /* enable SDRAM controller with no ECC, 32-bit SDRAM width, 16 byte burst */ | |
95b602ba | 533 | mtdcr (SDRAM0_CFGADDR, SDRAM0_CFG); |
d1c3b275 | 534 | tmp = (mfdcr (SDRAM0_CFGDATA) & ~0xFFE00000) | 0x80E00000; |
95b602ba | 535 | mtdcr (SDRAM0_CFGADDR, SDRAM0_CFG); |
d1c3b275 | 536 | mtdcr (SDRAM0_CFGDATA, tmp); |
7d393aed WD |
537 | |
538 | ||
7d393aed WD |
539 | /*-------------------------------------------------------------------------+ |
540 | | Interrupt controller setup for the PIP405 board. | |
541 | | Note: IRQ 0-15 405GP internally generated; active high; level sensitive | |
542 | | IRQ 16 405GP internally generated; active low; level sensitive | |
543 | | IRQ 17-24 RESERVED | |
544 | | IRQ 25 (EXT IRQ 0) SouthBridg; active low; level sensitive | |
545 | | IRQ 26 (EXT IRQ 1) NMI: active low; level sensitive | |
546 | | IRQ 27 (EXT IRQ 2) SMI: active Low; level sensitive | |
547 | | IRQ 28 (EXT IRQ 3) PCI SLOT 3; active low; level sensitive | |
548 | | IRQ 29 (EXT IRQ 4) PCI SLOT 2; active low; level sensitive | |
549 | | IRQ 30 (EXT IRQ 5) PCI SLOT 1; active low; level sensitive | |
550 | | IRQ 31 (EXT IRQ 6) PCI SLOT 0; active low; level sensitive | |
551 | | Note for PIP405 board: | |
552 | | An interrupt taken for the SouthBridge (IRQ 25) indicates that | |
553 | | the Interrupt Controller in the South Bridge has caused the | |
554 | | interrupt. The IC must be read to determine which device | |
555 | | caused the interrupt. | |
556 | | | |
557 | +-------------------------------------------------------------------------*/ | |
952e7760 SR |
558 | mtdcr (UIC0SR, 0xFFFFFFFF); /* clear all ints */ |
559 | mtdcr (UIC0ER, 0x00000000); /* disable all ints */ | |
560 | mtdcr (UIC0CR, 0x00000000); /* set all to be non-critical (for now) */ | |
561 | mtdcr (UIC0PR, 0xFFFFFF80); /* set int polarities */ | |
562 | mtdcr (UIC0TR, 0x10000000); /* set int trigger levels */ | |
563 | mtdcr (UIC0VCR, 0x00000001); /* set vect base=0,INT0 highest priority */ | |
564 | mtdcr (UIC0SR, 0xFFFFFFFF); /* clear all ints */ | |
7d393aed WD |
565 | |
566 | return 0; | |
567 | } | |
568 | ||
21be309b DM |
569 | int board_early_init_r(void) |
570 | { | |
571 | int mode; | |
572 | ||
573 | /* | |
574 | * since we are relocated, we can finally enable i-cache | |
575 | * and set up the flash CS correctly | |
576 | */ | |
577 | icache_enable(); | |
578 | setup_cs_reloc(); | |
579 | /* get and display boot mode */ | |
580 | mode = get_boot_mode(); | |
581 | if (mode & BOOT_PCI) | |
582 | printf("PCI Boot %s Map\n", (mode & BOOT_MPS) ? | |
583 | "MPS" : "Flash"); | |
584 | else | |
585 | printf("%s Boot\n", (mode & BOOT_MPS) ? | |
586 | "MPS" : "Flash"); | |
7d393aed | 587 | |
21be309b DM |
588 | return 0; |
589 | } | |
7d393aed WD |
590 | /* ------------------------------------------------------------------------- */ |
591 | ||
592 | /* | |
593 | * Check Board Identity: | |
594 | */ | |
595 | ||
596 | int checkboard (void) | |
597 | { | |
77ddac94 | 598 | char s[50]; |
7d393aed WD |
599 | unsigned char bc; |
600 | int i; | |
601 | backup_t *b = (backup_t *) s; | |
602 | ||
603 | puts ("Board: "); | |
604 | ||
cdb74977 | 605 | i = getenv_f("serial#", (char *)s, 32); |
77ddac94 | 606 | if ((i == 0) || strncmp ((char *)s, "PIP405", 6)) { |
7d393aed WD |
607 | get_backup_values (b); |
608 | if (strncmp (b->signature, "MPL\0", 4) != 0) { | |
609 | puts ("### No HW ID - assuming PIP405"); | |
610 | } else { | |
611 | b->serial_name[6] = 0; | |
612 | printf ("%s SN: %s", b->serial_name, | |
613 | &b->serial_name[7]); | |
614 | } | |
615 | } else { | |
616 | s[6] = 0; | |
617 | printf ("%s SN: %s", s, &s[7]); | |
618 | } | |
619 | bc = in8 (CONFIG_PORT_ADDR); | |
620 | printf (" Boot Config: 0x%x\n", bc); | |
621 | return (0); | |
622 | } | |
623 | ||
624 | ||
625 | /* ------------------------------------------------------------------------- */ | |
626 | /* ------------------------------------------------------------------------- */ | |
627 | /* | |
628 | initdram(int board_type) reads EEPROM via I2c. EEPROM contains all of | |
629 | the necessary info for SDRAM controller configuration | |
630 | */ | |
631 | /* ------------------------------------------------------------------------- */ | |
632 | /* ------------------------------------------------------------------------- */ | |
633 | static int test_dram (unsigned long ramsize); | |
634 | ||
9973e3c6 | 635 | phys_size_t initdram (int board_type) |
7d393aed | 636 | { |
7d393aed WD |
637 | unsigned long bank_reg[4], tmp, bank_size; |
638 | int i, ds; | |
639 | unsigned long TotalSize; | |
640 | ||
641 | ds = 0; | |
642 | /* since the DRAM controller is allready set up, | |
643 | * calculate the size with the bank registers | |
644 | */ | |
95b602ba | 645 | mtdcr (SDRAM0_CFGADDR, SDRAM0_B0CR); |
d1c3b275 | 646 | bank_reg[0] = mfdcr (SDRAM0_CFGDATA); |
95b602ba | 647 | mtdcr (SDRAM0_CFGADDR, SDRAM0_B1CR); |
d1c3b275 | 648 | bank_reg[1] = mfdcr (SDRAM0_CFGDATA); |
95b602ba | 649 | mtdcr (SDRAM0_CFGADDR, SDRAM0_B2CR); |
d1c3b275 | 650 | bank_reg[2] = mfdcr (SDRAM0_CFGDATA); |
95b602ba | 651 | mtdcr (SDRAM0_CFGADDR, SDRAM0_B3CR); |
d1c3b275 | 652 | bank_reg[3] = mfdcr (SDRAM0_CFGDATA); |
7d393aed WD |
653 | TotalSize = 0; |
654 | for (i = 0; i < 4; i++) { | |
655 | if ((bank_reg[i] & 0x1) == 0x1) { | |
656 | tmp = (bank_reg[i] >> 17) & 0x7; | |
657 | bank_size = 4 << tmp; | |
658 | TotalSize += bank_size; | |
659 | } else | |
660 | ds = 1; | |
661 | } | |
662 | if (ds == 1) | |
663 | printf ("single-sided DIMM "); | |
664 | else | |
665 | printf ("double-sided DIMM "); | |
666 | test_dram (TotalSize * 1024 * 1024); | |
667 | /* bank 2 (SDRAM Clock 2) is not usable if 133MHz SDRAM IF */ | |
668 | (void) get_clocks(); | |
669 | if (gd->cpu_clk > 220000000) | |
670 | TotalSize /= 2; | |
671 | return (TotalSize * 1024 * 1024); | |
672 | } | |
673 | ||
674 | /* ------------------------------------------------------------------------- */ | |
675 | ||
676 | ||
677 | static int test_dram (unsigned long ramsize) | |
678 | { | |
679 | /* not yet implemented */ | |
680 | return (1); | |
681 | } | |
682 | ||
7d393aed WD |
683 | int misc_init_r (void) |
684 | { | |
7205e407 WD |
685 | /* adjust flash start and size as well as the offset */ |
686 | gd->bd->bi_flashstart=0-flash_info[0].size; | |
6d0f6bcf | 687 | gd->bd->bi_flashsize=flash_info[0].size-CONFIG_SYS_MONITOR_LEN; |
7205e407 WD |
688 | gd->bd->bi_flashoffset=0; |
689 | ||
690 | /* if PIP405 has booted from PCI, reset CCR0[24] as described in errata PCI_18 */ | |
d1c3b275 | 691 | if (mfdcr(CPC0_PSR) & PSR_ROM_LOC) |
58ea142f | 692 | mtspr(SPRN_CCR0, (mfspr(SPRN_CCR0) & ~0x80)); |
7205e407 | 693 | |
7d393aed WD |
694 | return (0); |
695 | } | |
696 | ||
697 | /*************************************************************************** | |
698 | * some helping routines | |
699 | */ | |
700 | ||
701 | int overwrite_console (void) | |
702 | { | |
703 | return (in8 (CONFIG_PORT_ADDR) & 0x1); /* return TRUE if console should be overwritten */ | |
704 | } | |
705 | ||
706 | ||
7d393aed WD |
707 | extern int isa_init (void); |
708 | ||
709 | ||
710 | void print_pip405_rev (void) | |
711 | { | |
712 | unsigned char part, vers, cfg; | |
713 | ||
714 | part = in8 (PLD_PART_REG); | |
715 | vers = in8 (PLD_VERS_REG); | |
716 | cfg = in8 (PLD_BOARD_CFG_REG); | |
717 | printf ("Rev: PIP405-%d Rev %c PLD%d %d PLD%d %d\n", | |
718 | 16 - ((cfg >> 4) & 0xf), (cfg & 0xf) + 'A', part & 0xf, | |
719 | vers & 0xf, (part >> 4) & 0xf, (vers >> 4) & 0xf); | |
720 | } | |
721 | ||
722 | extern void check_env(void); | |
723 | ||
724 | ||
725 | int last_stage_init (void) | |
726 | { | |
727 | print_pip405_rev (); | |
728 | isa_init (); | |
28c34504 | 729 | stdio_print_current_devices (); |
7d393aed WD |
730 | check_env(); |
731 | return 0; | |
732 | } | |
733 | ||
734 | /************************************************************************ | |
735 | * Print PIP405 Info | |
736 | ************************************************************************/ | |
737 | void print_pip405_info (void) | |
738 | { | |
739 | unsigned char part, vers, cfg, ledu, sysman, flashcom, can, serpwr, | |
740 | compwr, nicvga, scsirst; | |
741 | ||
742 | part = in8 (PLD_PART_REG); | |
743 | vers = in8 (PLD_VERS_REG); | |
744 | cfg = in8 (PLD_BOARD_CFG_REG); | |
745 | ledu = in8 (PLD_LED_USER_REG); | |
746 | sysman = in8 (PLD_SYS_MAN_REG); | |
747 | flashcom = in8 (PLD_FLASH_COM_REG); | |
748 | can = in8 (PLD_CAN_REG); | |
749 | serpwr = in8 (PLD_SER_PWR_REG); | |
750 | compwr = in8 (PLD_COM_PWR_REG); | |
751 | nicvga = in8 (PLD_NIC_VGA_REG); | |
752 | scsirst = in8 (PLD_SCSI_RST_REG); | |
753 | printf ("PLD Part %d version %d\n", | |
754 | part & 0xf, vers & 0xf); | |
755 | printf ("PLD Part %d version %d\n", | |
756 | (part >> 4) & 0xf, (vers >> 4) & 0xf); | |
757 | printf ("Board Revision %c\n", (cfg & 0xf) + 'A'); | |
758 | printf ("Population Options %d %d %d %d\n", | |
759 | (cfg >> 4) & 0x1, (cfg >> 5) & 0x1, | |
760 | (cfg >> 6) & 0x1, (cfg >> 7) & 0x1); | |
761 | printf ("User LED0 %s User LED1 %s\n", | |
762 | ((ledu & 0x1) == 0x1) ? "on" : "off", | |
763 | ((ledu & 0x2) == 0x2) ? "on" : "off"); | |
764 | printf ("Additionally Options %d %d\n", | |
765 | (ledu >> 2) & 0x1, (ledu >> 3) & 0x1); | |
766 | printf ("User Config Switch %d %d %d %d\n", | |
767 | (ledu >> 4) & 0x1, (ledu >> 5) & 0x1, | |
768 | (ledu >> 6) & 0x1, (ledu >> 7) & 0x1); | |
769 | switch (sysman & 0x3) { | |
770 | case 0: | |
771 | printf ("PCI Clocks are running\n"); | |
772 | break; | |
773 | case 1: | |
774 | printf ("PCI Clocks are stopped in POS State\n"); | |
775 | break; | |
776 | case 2: | |
777 | printf ("PCI Clocks are stopped when PCI_STP# is asserted\n"); | |
778 | break; | |
779 | case 3: | |
780 | printf ("PCI Clocks are stopped\n"); | |
781 | break; | |
782 | } | |
783 | switch ((sysman >> 2) & 0x3) { | |
784 | case 0: | |
785 | printf ("Main Clocks are running\n"); | |
786 | break; | |
787 | case 1: | |
788 | printf ("Main Clocks are stopped in POS State\n"); | |
789 | break; | |
790 | case 2: | |
791 | case 3: | |
792 | printf ("PCI Clocks are stopped\n"); | |
793 | break; | |
794 | } | |
795 | printf ("INIT asserts %sINT2# (SMI)\n", | |
796 | ((sysman & 0x10) == 0x10) ? "" : "not "); | |
797 | printf ("INIT asserts %sINT1# (NMI)\n", | |
798 | ((sysman & 0x20) == 0x20) ? "" : "not "); | |
799 | printf ("INIT occured %d\n", (sysman >> 6) & 0x1); | |
800 | printf ("SER1 is routed to %s\n", | |
801 | ((flashcom & 0x1) == 0x1) ? "RS485" : "RS232"); | |
802 | printf ("COM2 is routed to %s\n", | |
803 | ((flashcom & 0x2) == 0x2) ? "RS485" : "RS232"); | |
804 | printf ("RS485 is configured as %s duplex\n", | |
805 | ((flashcom & 0x4) == 0x4) ? "full" : "half"); | |
806 | printf ("RS485 is connected to %s\n", | |
807 | ((flashcom & 0x8) == 0x8) ? "COM1" : "COM2"); | |
808 | printf ("SER1 uses handshakes %s\n", | |
809 | ((flashcom & 0x10) == 0x10) ? "DTR/DSR" : "RTS/CTS"); | |
810 | printf ("Bootflash is %swriteprotected\n", | |
811 | ((flashcom & 0x20) == 0x20) ? "not " : ""); | |
812 | printf ("Bootflash VPP is %s\n", | |
813 | ((flashcom & 0x40) == 0x40) ? "on" : "off"); | |
814 | printf ("Bootsector is %swriteprotected\n", | |
815 | ((flashcom & 0x80) == 0x80) ? "not " : ""); | |
816 | switch ((can) & 0x3) { | |
817 | case 0: | |
818 | printf ("CAN Controller is on address 0x1000..0x10FF\n"); | |
819 | break; | |
820 | case 1: | |
821 | printf ("CAN Controller is on address 0x8000..0x80FF\n"); | |
822 | break; | |
823 | case 2: | |
824 | printf ("CAN Controller is on address 0xE000..0xE0FF\n"); | |
825 | break; | |
826 | case 3: | |
827 | printf ("CAN Controller is disabled\n"); | |
828 | break; | |
829 | } | |
830 | switch ((can >> 2) & 0x3) { | |
831 | case 0: | |
832 | printf ("CAN Controller Reset is ISA Reset\n"); | |
833 | break; | |
834 | case 1: | |
835 | printf ("CAN Controller Reset is ISA Reset and POS State\n"); | |
836 | break; | |
837 | case 2: | |
838 | case 3: | |
839 | printf ("CAN Controller is in reset\n"); | |
840 | break; | |
841 | } | |
842 | if (((can >> 4) < 3) || ((can >> 4) == 8) || ((can >> 4) == 13)) | |
843 | printf ("CAN Interrupt is disabled\n"); | |
844 | else | |
845 | printf ("CAN Interrupt is ISA INT%d\n", (can >> 4) & 0xf); | |
846 | switch (serpwr & 0x3) { | |
847 | case 0: | |
848 | printf ("SER0 Drivers are enabled\n"); | |
849 | break; | |
850 | case 1: | |
851 | printf ("SER0 Drivers are disabled in the POS state\n"); | |
852 | break; | |
853 | case 2: | |
854 | case 3: | |
855 | printf ("SER0 Drivers are disabled\n"); | |
856 | break; | |
857 | } | |
858 | switch ((serpwr >> 2) & 0x3) { | |
859 | case 0: | |
860 | printf ("SER1 Drivers are enabled\n"); | |
861 | break; | |
862 | case 1: | |
863 | printf ("SER1 Drivers are disabled in the POS state\n"); | |
864 | break; | |
865 | case 2: | |
866 | case 3: | |
867 | printf ("SER1 Drivers are disabled\n"); | |
868 | break; | |
869 | } | |
870 | switch (compwr & 0x3) { | |
871 | case 0: | |
872 | printf ("COM1 Drivers are enabled\n"); | |
873 | break; | |
874 | case 1: | |
875 | printf ("COM1 Drivers are disabled in the POS state\n"); | |
876 | break; | |
877 | case 2: | |
878 | case 3: | |
879 | printf ("COM1 Drivers are disabled\n"); | |
880 | break; | |
881 | } | |
882 | switch ((compwr >> 2) & 0x3) { | |
883 | case 0: | |
884 | printf ("COM2 Drivers are enabled\n"); | |
885 | break; | |
886 | case 1: | |
887 | printf ("COM2 Drivers are disabled in the POS state\n"); | |
888 | break; | |
889 | case 2: | |
890 | case 3: | |
891 | printf ("COM2 Drivers are disabled\n"); | |
892 | break; | |
893 | } | |
894 | switch ((nicvga) & 0x3) { | |
895 | case 0: | |
896 | printf ("PHY is running\n"); | |
897 | break; | |
898 | case 1: | |
899 | printf ("PHY is in Power save mode in POS state\n"); | |
900 | break; | |
901 | case 2: | |
902 | case 3: | |
903 | printf ("PHY is in Power save mode\n"); | |
904 | break; | |
905 | } | |
906 | switch ((nicvga >> 2) & 0x3) { | |
907 | case 0: | |
908 | printf ("VGA is running\n"); | |
909 | break; | |
910 | case 1: | |
911 | printf ("VGA is in Power save mode in POS state\n"); | |
912 | break; | |
913 | case 2: | |
914 | case 3: | |
915 | printf ("VGA is in Power save mode\n"); | |
916 | break; | |
917 | } | |
918 | printf ("PHY is %sreseted\n", ((nicvga & 0x10) == 0x10) ? "" : "not "); | |
919 | printf ("VGA is %sreseted\n", ((nicvga & 0x20) == 0x20) ? "" : "not "); | |
920 | printf ("Reserved Configuration is %d %d\n", (nicvga >> 6) & 0x1, | |
921 | (nicvga >> 7) & 0x1); | |
922 | switch ((scsirst) & 0x3) { | |
923 | case 0: | |
924 | printf ("SCSI Controller is running\n"); | |
925 | break; | |
926 | case 1: | |
927 | printf ("SCSI Controller is in Power save mode in POS state\n"); | |
928 | break; | |
929 | case 2: | |
930 | case 3: | |
931 | printf ("SCSI Controller is in Power save mode\n"); | |
932 | break; | |
933 | } | |
934 | printf ("SCSI termination is %s\n", | |
935 | ((scsirst & 0x4) == 0x4) ? "disabled" : "enabled"); | |
936 | printf ("SCSI Controller is %sreseted\n", | |
937 | ((scsirst & 0x10) == 0x10) ? "" : "not "); | |
938 | printf ("IDE disks are %sreseted\n", | |
939 | ((scsirst & 0x20) == 0x20) ? "" : "not "); | |
940 | printf ("ISA Bus is %sreseted\n", | |
941 | ((scsirst & 0x40) == 0x40) ? "" : "not "); | |
942 | printf ("Super IO is %sreseted\n", | |
943 | ((scsirst & 0x80) == 0x80) ? "" : "not "); | |
944 | } | |
945 | ||
946 | void user_led0 (unsigned char on) | |
947 | { | |
948 | if (on == TRUE) | |
949 | out8 (PLD_LED_USER_REG, (in8 (PLD_LED_USER_REG) | 0x1)); | |
950 | else | |
951 | out8 (PLD_LED_USER_REG, (in8 (PLD_LED_USER_REG) & 0xfe)); | |
952 | } | |
953 | ||
954 | void user_led1 (unsigned char on) | |
955 | { | |
956 | if (on == TRUE) | |
957 | out8 (PLD_LED_USER_REG, (in8 (PLD_LED_USER_REG) | 0x2)); | |
958 | else | |
959 | out8 (PLD_LED_USER_REG, (in8 (PLD_LED_USER_REG) & 0xfd)); | |
960 | } | |
961 | ||
962 | void ide_set_reset (int idereset) | |
963 | { | |
964 | /* if reset = 1 IDE reset will be asserted */ | |
965 | unsigned char resreg; | |
966 | ||
967 | resreg = in8 (PLD_SCSI_RST_REG); | |
968 | if (idereset == 1) | |
969 | resreg |= 0x20; | |
970 | else { | |
971 | udelay(10000); | |
972 | resreg &= 0xdf; | |
973 | } | |
974 | out8 (PLD_SCSI_RST_REG, resreg); | |
975 | } |