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126aa70f JL |
1 | /* |
2 | * Copyright 2006 Freescale Semiconductor | |
3 | * Jeff Brown | |
4 | * Srikanth Srinivasan (srikanth.srinivasan@freescale.com) | |
5 | * | |
6 | * See file CREDITS for list of people who contributed to this | |
7 | * project. | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or | |
10 | * modify it under the terms of the GNU General Public License as | |
11 | * published by the Free Software Foundation; either version 2 of | |
12 | * the License, or (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
22 | * MA 02111-1307 USA | |
23 | */ | |
24 | ||
25 | #include <common.h> | |
126aa70f | 26 | #include <command.h> |
3d98b858 | 27 | #include <watchdog.h> |
314d5b6c | 28 | #include <asm/cache.h> |
5a8a163a | 29 | #include <asm/io.h> |
ad8f8687 | 30 | |
126aa70f JL |
31 | #include "pixis.h" |
32 | ||
33 | ||
3d98b858 HW |
34 | static ulong strfractoint(uchar *strptr); |
35 | ||
36 | ||
37 | /* | |
38 | * Simple board reset. | |
39 | */ | |
40 | void pixis_reset(void) | |
41 | { | |
42 | out8(PIXIS_BASE + PIXIS_RST, 0); | |
43 | } | |
44 | ||
45 | ||
126aa70f JL |
46 | /* |
47 | * Per table 27, page 58 of MPC8641HPCN spec. | |
48 | */ | |
49 | int set_px_sysclk(ulong sysclk) | |
50 | { | |
51 | u8 sysclk_s, sysclk_r, sysclk_v, vclkh, vclkl, sysclk_aux; | |
52 | ||
53 | switch (sysclk) { | |
54 | case 33: | |
55 | sysclk_s = 0x04; | |
56 | sysclk_r = 0x04; | |
57 | sysclk_v = 0x07; | |
58 | sysclk_aux = 0x00; | |
59 | break; | |
60 | case 40: | |
61 | sysclk_s = 0x01; | |
62 | sysclk_r = 0x1F; | |
63 | sysclk_v = 0x20; | |
64 | sysclk_aux = 0x01; | |
65 | break; | |
66 | case 50: | |
67 | sysclk_s = 0x01; | |
68 | sysclk_r = 0x1F; | |
69 | sysclk_v = 0x2A; | |
70 | sysclk_aux = 0x02; | |
71 | break; | |
72 | case 66: | |
73 | sysclk_s = 0x01; | |
74 | sysclk_r = 0x04; | |
75 | sysclk_v = 0x04; | |
76 | sysclk_aux = 0x03; | |
77 | break; | |
78 | case 83: | |
79 | sysclk_s = 0x01; | |
80 | sysclk_r = 0x1F; | |
81 | sysclk_v = 0x4B; | |
82 | sysclk_aux = 0x04; | |
83 | break; | |
84 | case 100: | |
85 | sysclk_s = 0x01; | |
86 | sysclk_r = 0x1F; | |
87 | sysclk_v = 0x5C; | |
88 | sysclk_aux = 0x05; | |
89 | break; | |
90 | case 134: | |
91 | sysclk_s = 0x06; | |
92 | sysclk_r = 0x1F; | |
93 | sysclk_v = 0x3B; | |
94 | sysclk_aux = 0x06; | |
95 | break; | |
96 | case 166: | |
97 | sysclk_s = 0x06; | |
98 | sysclk_r = 0x1F; | |
99 | sysclk_v = 0x4B; | |
100 | sysclk_aux = 0x07; | |
101 | break; | |
102 | default: | |
103 | printf("Unsupported SYSCLK frequency.\n"); | |
104 | return 0; | |
105 | } | |
106 | ||
80e955c7 | 107 | vclkh = (sysclk_s << 5) | sysclk_r; |
126aa70f JL |
108 | vclkl = sysclk_v; |
109 | ||
110 | out8(PIXIS_BASE + PIXIS_VCLKH, vclkh); | |
111 | out8(PIXIS_BASE + PIXIS_VCLKL, vclkl); | |
112 | ||
80e955c7 | 113 | out8(PIXIS_BASE + PIXIS_AUX, sysclk_aux); |
126aa70f JL |
114 | |
115 | return 1; | |
116 | } | |
117 | ||
118 | ||
119 | int set_px_mpxpll(ulong mpxpll) | |
120 | { | |
121 | u8 tmp; | |
122 | u8 val; | |
123 | ||
124 | switch (mpxpll) { | |
125 | case 2: | |
126 | case 4: | |
127 | case 6: | |
128 | case 8: | |
129 | case 10: | |
130 | case 12: | |
131 | case 14: | |
132 | case 16: | |
80e955c7 | 133 | val = (u8) mpxpll; |
126aa70f JL |
134 | break; |
135 | default: | |
136 | printf("Unsupported MPXPLL ratio.\n"); | |
137 | return 0; | |
138 | } | |
139 | ||
140 | tmp = in8(PIXIS_BASE + PIXIS_VSPEED1); | |
141 | tmp = (tmp & 0xF0) | (val & 0x0F); | |
142 | out8(PIXIS_BASE + PIXIS_VSPEED1, tmp); | |
143 | ||
144 | return 1; | |
145 | } | |
146 | ||
147 | ||
148 | int set_px_corepll(ulong corepll) | |
149 | { | |
150 | u8 tmp; | |
151 | u8 val; | |
152 | ||
153 | switch ((int)corepll) { | |
154 | case 20: | |
155 | val = 0x08; | |
156 | break; | |
157 | case 25: | |
158 | val = 0x0C; | |
159 | break; | |
160 | case 30: | |
161 | val = 0x10; | |
162 | break; | |
163 | case 35: | |
164 | val = 0x1C; | |
165 | break; | |
166 | case 40: | |
167 | val = 0x14; | |
168 | break; | |
169 | case 45: | |
170 | val = 0x0E; | |
171 | break; | |
172 | default: | |
173 | printf("Unsupported COREPLL ratio.\n"); | |
174 | return 0; | |
175 | } | |
176 | ||
177 | tmp = in8(PIXIS_BASE + PIXIS_VSPEED0); | |
178 | tmp = (tmp & 0xE0) | (val & 0x1F); | |
179 | out8(PIXIS_BASE + PIXIS_VSPEED0, tmp); | |
180 | ||
181 | return 1; | |
182 | } | |
183 | ||
184 | ||
185 | void read_from_px_regs(int set) | |
186 | { | |
16c3cde0 | 187 | u8 mask = 0x1C; /* COREPLL, MPXPLL, SYSCLK controlled by PIXIS */ |
126aa70f JL |
188 | u8 tmp = in8(PIXIS_BASE + PIXIS_VCFGEN0); |
189 | ||
190 | if (set) | |
191 | tmp = tmp | mask; | |
192 | else | |
193 | tmp = tmp & ~mask; | |
194 | out8(PIXIS_BASE + PIXIS_VCFGEN0, tmp); | |
195 | } | |
196 | ||
197 | ||
198 | void read_from_px_regs_altbank(int set) | |
199 | { | |
16c3cde0 | 200 | u8 mask = 0x04; /* FLASHBANK and FLASHMAP controlled by PIXIS */ |
126aa70f JL |
201 | u8 tmp = in8(PIXIS_BASE + PIXIS_VCFGEN1); |
202 | ||
203 | if (set) | |
204 | tmp = tmp | mask; | |
205 | else | |
206 | tmp = tmp & ~mask; | |
207 | out8(PIXIS_BASE + PIXIS_VCFGEN1, tmp); | |
208 | } | |
209 | ||
6d0f6bcf JCPV |
210 | #ifndef CONFIG_SYS_PIXIS_VBOOT_MASK |
211 | #define CONFIG_SYS_PIXIS_VBOOT_MASK (0x40) | |
db74b3c1 | 212 | #endif |
126aa70f | 213 | |
16c3cde0 JY |
214 | void clear_altbank(void) |
215 | { | |
216 | u8 tmp; | |
217 | ||
218 | tmp = in8(PIXIS_BASE + PIXIS_VBOOT); | |
6d0f6bcf | 219 | tmp &= ~CONFIG_SYS_PIXIS_VBOOT_MASK; |
16c3cde0 JY |
220 | |
221 | out8(PIXIS_BASE + PIXIS_VBOOT, tmp); | |
222 | } | |
223 | ||
224 | ||
126aa70f JL |
225 | void set_altbank(void) |
226 | { | |
227 | u8 tmp; | |
228 | ||
229 | tmp = in8(PIXIS_BASE + PIXIS_VBOOT); | |
6d0f6bcf | 230 | tmp |= CONFIG_SYS_PIXIS_VBOOT_MASK; |
126aa70f JL |
231 | |
232 | out8(PIXIS_BASE + PIXIS_VBOOT, tmp); | |
233 | } | |
234 | ||
235 | ||
236 | void set_px_go(void) | |
237 | { | |
238 | u8 tmp; | |
239 | ||
240 | tmp = in8(PIXIS_BASE + PIXIS_VCTL); | |
16c3cde0 | 241 | tmp = tmp & 0x1E; /* clear GO bit */ |
126aa70f JL |
242 | out8(PIXIS_BASE + PIXIS_VCTL, tmp); |
243 | ||
244 | tmp = in8(PIXIS_BASE + PIXIS_VCTL); | |
16c3cde0 | 245 | tmp = tmp | 0x01; /* set GO bit - start reset sequencer */ |
126aa70f JL |
246 | out8(PIXIS_BASE + PIXIS_VCTL, tmp); |
247 | } | |
248 | ||
249 | ||
250 | void set_px_go_with_watchdog(void) | |
251 | { | |
252 | u8 tmp; | |
253 | ||
254 | tmp = in8(PIXIS_BASE + PIXIS_VCTL); | |
255 | tmp = tmp & 0x1E; | |
256 | out8(PIXIS_BASE + PIXIS_VCTL, tmp); | |
257 | ||
258 | tmp = in8(PIXIS_BASE + PIXIS_VCTL); | |
259 | tmp = tmp | 0x09; | |
260 | out8(PIXIS_BASE + PIXIS_VCTL, tmp); | |
261 | } | |
262 | ||
263 | ||
3d98b858 HW |
264 | int pixis_disable_watchdog_cmd(cmd_tbl_t *cmdtp, |
265 | int flag, int argc, char *argv[]) | |
126aa70f JL |
266 | { |
267 | u8 tmp; | |
268 | ||
269 | tmp = in8(PIXIS_BASE + PIXIS_VCTL); | |
270 | tmp = tmp & 0x1E; | |
271 | out8(PIXIS_BASE + PIXIS_VCTL, tmp); | |
272 | ||
273 | /* setting VCTL[WDEN] to 0 to disable watch dog */ | |
274 | tmp = in8(PIXIS_BASE + PIXIS_VCTL); | |
80e955c7 | 275 | tmp &= ~0x08; |
126aa70f JL |
276 | out8(PIXIS_BASE + PIXIS_VCTL, tmp); |
277 | ||
278 | return 0; | |
279 | } | |
280 | ||
126aa70f | 281 | U_BOOT_CMD( |
3d98b858 | 282 | diswd, 1, 0, pixis_disable_watchdog_cmd, |
80e955c7 JL |
283 | "diswd - Disable watchdog timer \n", |
284 | NULL); | |
126aa70f | 285 | |
5a8a163a AF |
286 | #ifdef CONFIG_FSL_SGMII_RISER |
287 | int pixis_set_sgmii(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) | |
288 | { | |
289 | int which_tsec = -1; | |
290 | uchar mask; | |
291 | uchar switch_mask; | |
292 | ||
293 | if (argc > 2) | |
294 | if (strcmp(argv[1], "all") != 0) | |
295 | which_tsec = simple_strtoul(argv[1], NULL, 0); | |
296 | ||
297 | switch (which_tsec) { | |
298 | case 1: | |
299 | mask = PIXIS_VSPEED2_TSEC1SER; | |
300 | switch_mask = PIXIS_VCFGEN1_TSEC1SER; | |
301 | break; | |
302 | case 3: | |
303 | mask = PIXIS_VSPEED2_TSEC3SER; | |
304 | switch_mask = PIXIS_VCFGEN1_TSEC3SER; | |
305 | break; | |
306 | default: | |
307 | mask = PIXIS_VSPEED2_TSEC1SER | PIXIS_VSPEED2_TSEC3SER; | |
308 | switch_mask = PIXIS_VCFGEN1_TSEC1SER | PIXIS_VCFGEN1_TSEC3SER; | |
309 | break; | |
310 | } | |
311 | ||
312 | /* Toggle whether the switches or FPGA control the settings */ | |
313 | if (!strcmp(argv[argc - 1], "switch")) | |
314 | clrbits_8((unsigned char *)PIXIS_BASE + PIXIS_VCFGEN1, | |
315 | switch_mask); | |
316 | else | |
317 | setbits_8((unsigned char *)PIXIS_BASE + PIXIS_VCFGEN1, | |
318 | switch_mask); | |
319 | ||
320 | /* If it's not the switches, enable or disable SGMII, as specified */ | |
321 | if (!strcmp(argv[argc - 1], "on")) | |
322 | clrbits_8((unsigned char *)PIXIS_BASE + PIXIS_VSPEED2, mask); | |
323 | else if (!strcmp(argv[argc - 1], "off")) | |
324 | setbits_8((unsigned char *)PIXIS_BASE + PIXIS_VSPEED2, mask); | |
325 | ||
326 | return 0; | |
327 | } | |
328 | ||
329 | U_BOOT_CMD( | |
6d0f6bcf | 330 | pixis_set_sgmii, CONFIG_SYS_MAXARGS, 1, pixis_set_sgmii, |
5a8a163a AF |
331 | "pixis_set_sgmii" |
332 | " - Enable or disable SGMII mode for a given TSEC \n", | |
333 | "\npixis_set_sgmii [TSEC num] <on|off|switch>\n" | |
334 | " TSEC num: 1,2,3,4 or 'all'. 'all' is default.\n" | |
335 | " on - enables SGMII\n" | |
336 | " off - disables SGMII\n" | |
337 | " switch - use switch settings\n"); | |
338 | #endif | |
339 | ||
126aa70f JL |
340 | /* |
341 | * This function takes the non-integral cpu:mpx pll ratio | |
342 | * and converts it to an integer that can be used to assign | |
343 | * FPGA register values. | |
344 | * input: strptr i.e. argv[2] | |
345 | */ | |
346 | ||
3d98b858 | 347 | static ulong strfractoint(uchar *strptr) |
126aa70f JL |
348 | { |
349 | int i, j, retval; | |
350 | int mulconst; | |
351 | int intarr_len = 0, decarr_len = 0, no_dec = 0; | |
352 | ulong intval = 0, decval = 0; | |
353 | uchar intarr[3], decarr[3]; | |
354 | ||
355 | /* Assign the integer part to intarr[] | |
356 | * If there is no decimal point i.e. | |
357 | * if the ratio is an integral value | |
358 | * simply create the intarr. | |
359 | */ | |
360 | i = 0; | |
16c3cde0 | 361 | while (strptr[i] != '.') { |
126aa70f JL |
362 | if (strptr[i] == 0) { |
363 | no_dec = 1; | |
364 | break; | |
365 | } | |
366 | intarr[i] = strptr[i]; | |
367 | i++; | |
368 | } | |
369 | ||
370 | /* Assign length of integer part to intarr_len. */ | |
371 | intarr_len = i; | |
372 | intarr[i] = '\0'; | |
373 | ||
374 | if (no_dec) { | |
375 | /* Currently needed only for single digit corepll ratios */ | |
80e955c7 | 376 | mulconst = 10; |
126aa70f JL |
377 | decval = 0; |
378 | } else { | |
379 | j = 0; | |
80e955c7 | 380 | i++; /* Skipping the decimal point */ |
16c3cde0 | 381 | while ((strptr[i] >= '0') && (strptr[i] <= '9')) { |
126aa70f JL |
382 | decarr[j] = strptr[i]; |
383 | i++; | |
384 | j++; | |
385 | } | |
386 | ||
387 | decarr_len = j; | |
388 | decarr[j] = '\0'; | |
389 | ||
390 | mulconst = 1; | |
391 | for (i = 0; i < decarr_len; i++) | |
392 | mulconst *= 10; | |
cdd917a4 | 393 | decval = simple_strtoul((char *)decarr, NULL, 10); |
126aa70f JL |
394 | } |
395 | ||
cdd917a4 | 396 | intval = simple_strtoul((char *)intarr, NULL, 10); |
126aa70f JL |
397 | intval = intval * mulconst; |
398 | ||
399 | retval = intval + decval; | |
400 | ||
401 | return retval; | |
402 | } | |
3d98b858 HW |
403 | |
404 | ||
405 | int | |
406 | pixis_reset_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) | |
407 | { | |
16c3cde0 JY |
408 | unsigned int i; |
409 | char *p_cf = NULL; | |
410 | char *p_cf_sysclk = NULL; | |
411 | char *p_cf_corepll = NULL; | |
412 | char *p_cf_mpxpll = NULL; | |
413 | char *p_altbank = NULL; | |
414 | char *p_wd = NULL; | |
415 | unsigned int unknown_param = 0; | |
3d98b858 HW |
416 | |
417 | /* | |
418 | * No args is a simple reset request. | |
419 | */ | |
420 | if (argc <= 1) { | |
421 | pixis_reset(); | |
422 | /* not reached */ | |
423 | } | |
424 | ||
16c3cde0 JY |
425 | for (i = 1; i < argc; i++) { |
426 | if (strcmp(argv[i], "cf") == 0) { | |
427 | p_cf = argv[i]; | |
428 | if (i + 3 >= argc) { | |
429 | break; | |
430 | } | |
431 | p_cf_sysclk = argv[i+1]; | |
432 | p_cf_corepll = argv[i+2]; | |
433 | p_cf_mpxpll = argv[i+3]; | |
434 | i += 3; | |
435 | continue; | |
436 | } | |
3d98b858 | 437 | |
16c3cde0 JY |
438 | if (strcmp(argv[i], "altbank") == 0) { |
439 | p_altbank = argv[i]; | |
440 | continue; | |
3d98b858 HW |
441 | } |
442 | ||
16c3cde0 JY |
443 | if (strcmp(argv[i], "wd") == 0) { |
444 | p_wd = argv[i]; | |
445 | continue; | |
3d98b858 HW |
446 | } |
447 | ||
16c3cde0 JY |
448 | unknown_param = 1; |
449 | } | |
3d98b858 | 450 | |
16c3cde0 JY |
451 | /* |
452 | * Check that cf has all required parms | |
453 | */ | |
454 | if ((p_cf && !(p_cf_sysclk && p_cf_corepll && p_cf_mpxpll)) | |
53677ef1 | 455 | || unknown_param) { |
16c3cde0 JY |
456 | puts(cmdtp->help); |
457 | return 1; | |
458 | } | |
459 | ||
460 | /* | |
461 | * PIXIS seems to be sensitive to the ordering of | |
462 | * the registers that are touched. | |
463 | */ | |
464 | read_from_px_regs(0); | |
465 | ||
466 | if (p_altbank) { | |
467 | read_from_px_regs_altbank(0); | |
468 | } | |
469 | clear_altbank(); | |
470 | ||
471 | /* | |
472 | * Clock configuration specified. | |
473 | */ | |
474 | if (p_cf) { | |
475 | unsigned long sysclk; | |
476 | unsigned long corepll; | |
477 | unsigned long mpxpll; | |
478 | ||
479 | sysclk = simple_strtoul(p_cf_sysclk, NULL, 10); | |
480 | corepll = strfractoint((uchar *) p_cf_corepll); | |
481 | mpxpll = simple_strtoul(p_cf_mpxpll, NULL, 10); | |
482 | ||
483 | if (!(set_px_sysclk(sysclk) | |
484 | && set_px_corepll(corepll) | |
485 | && set_px_mpxpll(mpxpll))) { | |
486 | puts(cmdtp->help); | |
3d98b858 HW |
487 | return 1; |
488 | } | |
16c3cde0 JY |
489 | read_from_px_regs(1); |
490 | } | |
3d98b858 | 491 | |
16c3cde0 JY |
492 | /* |
493 | * Altbank specified | |
494 | * | |
495 | * NOTE CHANGE IN BEHAVIOR: previous code would default | |
496 | * to enabling watchdog if altbank is specified. | |
497 | * Now the watchdog must be enabled explicitly using 'wd'. | |
498 | */ | |
499 | if (p_altbank) { | |
500 | set_altbank(); | |
501 | read_from_px_regs_altbank(1); | |
502 | } | |
503 | ||
504 | /* | |
505 | * Reset with watchdog specified. | |
506 | */ | |
507 | if (p_wd) { | |
508 | set_px_go_with_watchdog(); | |
3d98b858 | 509 | } else { |
16c3cde0 | 510 | set_px_go(); |
3d98b858 HW |
511 | } |
512 | ||
16c3cde0 JY |
513 | /* |
514 | * Shouldn't be reached. | |
515 | */ | |
3d98b858 HW |
516 | return 0; |
517 | } | |
518 | ||
519 | ||
520 | U_BOOT_CMD( | |
6d0f6bcf | 521 | pixis_reset, CONFIG_SYS_MAXARGS, 1, pixis_reset_cmd, |
3d98b858 HW |
522 | "pixis_reset - Reset the board using the FPGA sequencer\n", |
523 | " pixis_reset\n" | |
524 | " pixis_reset [altbank]\n" | |
525 | " pixis_reset altbank wd\n" | |
526 | " pixis_reset altbank cf <SYSCLK freq> <COREPLL ratio> <MPXPLL ratio>\n" | |
527 | " pixis_reset cf <SYSCLK freq> <COREPLL ratio> <MPXPLL ratio>\n" | |
528 | ); |