1 /*
2 * OMAP cpu type detection
3 *
4 * Copyright (C) 2004, 2008 Nokia Corporation
5 *
6 * Copyright (C) 2009-11 Texas Instruments.
7 *
8 * Written by Tony Lindgren <tony.lindgren@nokia.com>
9 *
10 * Added OMAP4/5 specific defines - Santosh Shilimkar<santosh.shilimkar@ti.com>
11 * Added DRA7xxx specific defines - Sricharan R<r.sricharan@ti.com>
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
17 *
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
22 *
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 *
27 */
28
29 #include "omap24xx.h"
30 #include "omap34xx.h"
31 #include "omap44xx.h"
32 #include "ti81xx.h"
33 #include "am33xx.h"
34 #include "omap54xx.h"
35
36 #ifndef __ASSEMBLY__
37
38 #include <linux/bitops.h>
39 #include <linux/of.h>
40
41 /*
42 * Test if multicore OMAP support is needed
43 */
44 #undef MULTI_OMAP2
45 #undef OMAP_NAME
46
47 #ifdef CONFIG_ARCH_MULTIPLATFORM
48 #define MULTI_OMAP2
49 #endif
50 #ifdef CONFIG_SOC_OMAP2420
51 # ifdef OMAP_NAME
52 # undef MULTI_OMAP2
53 # define MULTI_OMAP2
54 # else
55 # define OMAP_NAME omap2420
56 # endif
57 #endif
58 #ifdef CONFIG_SOC_OMAP2430
59 # ifdef OMAP_NAME
60 # undef MULTI_OMAP2
61 # define MULTI_OMAP2
62 # else
63 # define OMAP_NAME omap2430
64 # endif
65 #endif
66 #ifdef CONFIG_ARCH_OMAP3
67 # ifdef OMAP_NAME
68 # undef MULTI_OMAP2
69 # define MULTI_OMAP2
70 # else
71 # define OMAP_NAME omap3
72 # endif
73 #endif
74 #ifdef CONFIG_ARCH_OMAP4
75 # ifdef OMAP_NAME
76 # undef MULTI_OMAP2
77 # define MULTI_OMAP2
78 # else
79 # define OMAP_NAME omap4
80 # endif
81 #endif
82
83 #ifdef CONFIG_SOC_OMAP5
84 # ifdef OMAP_NAME
85 # undef MULTI_OMAP2
86 # define MULTI_OMAP2
87 # else
88 # define OMAP_NAME omap5
89 # endif
90 #endif
91
92 #ifdef CONFIG_SOC_AM33XX
93 # ifdef OMAP_NAME
94 # undef MULTI_OMAP2
95 # define MULTI_OMAP2
96 # else
97 # define OMAP_NAME am33xx
98 # endif
99 #endif
100
101 #ifdef CONFIG_SOC_AM43XX
102 # ifdef OMAP_NAME
103 # undef MULTI_OMAP2
104 # define MULTI_OMAP2
105 # else
106 # define OMAP_NAME am43xx
107 # endif
108 #endif
109
110 #ifdef CONFIG_SOC_DRA7XX
111 # ifdef OMAP_NAME
112 # undef MULTI_OMAP2
113 # define MULTI_OMAP2
114 # else
115 # define OMAP_NAME DRA7XX
116 # endif
117 #endif
118
119 /*
120 * Omap device type i.e. EMU/HS/TST/GP/BAD
121 */
122 #define OMAP2_DEVICE_TYPE_TEST 0
123 #define OMAP2_DEVICE_TYPE_EMU 1
124 #define OMAP2_DEVICE_TYPE_SEC 2
125 #define OMAP2_DEVICE_TYPE_GP 3
126 #define OMAP2_DEVICE_TYPE_BAD 4
127
128 int omap_type(void);
129
130 /*
131 * omap_rev bits:
132 * CPU id bits (0730, 1510, 1710, 2422...) [31:16]
133 * CPU revision (See _REV_ defined in cpu.h) [15:08]
134 * CPU class bits (15xx, 16xx, 24xx, 34xx...) [07:00]
135 */
136 unsigned int omap_rev(void);
137
soc_is_omap(void)138 static inline int soc_is_omap(void)
139 {
140 return omap_rev() != 0;
141 }
142
143 /*
144 * Get the CPU revision for OMAP devices
145 */
146 #define GET_OMAP_REVISION() ((omap_rev() >> 8) & 0xff)
147
148 /*
149 * Macros to group OMAP into cpu classes.
150 * These can be used in most places.
151 * cpu_is_omap24xx(): True for OMAP2420, OMAP2422, OMAP2423, OMAP2430
152 * cpu_is_omap242x(): True for OMAP2420, OMAP2422, OMAP2423
153 * cpu_is_omap243x(): True for OMAP2430
154 * cpu_is_omap343x(): True for OMAP3430
155 * cpu_is_omap443x(): True for OMAP4430
156 * cpu_is_omap446x(): True for OMAP4460
157 * cpu_is_omap447x(): True for OMAP4470
158 * soc_is_omap543x(): True for OMAP5430, OMAP5432
159 */
160 #define GET_OMAP_CLASS (omap_rev() & 0xff)
161
162 #define IS_OMAP_CLASS(class, id) \
163 static inline int is_omap ##class (void) \
164 { \
165 return (GET_OMAP_CLASS == (id)) ? 1 : 0; \
166 }
167
168 #define GET_AM_CLASS ((omap_rev() >> 24) & 0xff)
169
170 #define IS_AM_CLASS(class, id) \
171 static inline int is_am ##class (void) \
172 { \
173 return (GET_AM_CLASS == (id)) ? 1 : 0; \
174 }
175
176 #define GET_TI_CLASS ((omap_rev() >> 24) & 0xff)
177
178 #define IS_TI_CLASS(class, id) \
179 static inline int is_ti ##class (void) \
180 { \
181 return (GET_TI_CLASS == (id)) ? 1 : 0; \
182 }
183
184 #define GET_OMAP_SUBCLASS ((omap_rev() >> 20) & 0x0fff)
185
186 #define IS_OMAP_SUBCLASS(subclass, id) \
187 static inline int is_omap ##subclass (void) \
188 { \
189 return (GET_OMAP_SUBCLASS == (id)) ? 1 : 0; \
190 }
191
192 #define IS_TI_SUBCLASS(subclass, id) \
193 static inline int is_ti ##subclass (void) \
194 { \
195 return (GET_OMAP_SUBCLASS == (id)) ? 1 : 0; \
196 }
197
198 #define IS_AM_SUBCLASS(subclass, id) \
199 static inline int is_am ##subclass (void) \
200 { \
201 return (GET_OMAP_SUBCLASS == (id)) ? 1 : 0; \
202 }
203
204 IS_OMAP_CLASS(24xx, 0x24)
205 IS_OMAP_CLASS(34xx, 0x34)
206 IS_OMAP_CLASS(44xx, 0x44)
207 IS_AM_CLASS(35xx, 0x35)
208 IS_OMAP_CLASS(54xx, 0x54)
209 IS_AM_CLASS(33xx, 0x33)
210 IS_AM_CLASS(43xx, 0x43)
211
212 IS_TI_CLASS(81xx, 0x81)
213
214 IS_OMAP_SUBCLASS(242x, 0x242)
215 IS_OMAP_SUBCLASS(243x, 0x243)
216 IS_OMAP_SUBCLASS(343x, 0x343)
217 IS_OMAP_SUBCLASS(363x, 0x363)
218 IS_OMAP_SUBCLASS(443x, 0x443)
219 IS_OMAP_SUBCLASS(446x, 0x446)
220 IS_OMAP_SUBCLASS(447x, 0x447)
221 IS_OMAP_SUBCLASS(543x, 0x543)
222
223 IS_TI_SUBCLASS(816x, 0x816)
224 IS_TI_SUBCLASS(814x, 0x814)
225 IS_AM_SUBCLASS(335x, 0x335)
226 IS_AM_SUBCLASS(437x, 0x437)
227
228 #define cpu_is_omap24xx() 0
229 #define cpu_is_omap242x() 0
230 #define cpu_is_omap243x() 0
231 #define cpu_is_omap34xx() 0
232 #define cpu_is_omap343x() 0
233 #define cpu_is_ti81xx() 0
234 #define cpu_is_ti816x() 0
235 #define cpu_is_ti814x() 0
236 #define soc_is_am35xx() 0
237 #define soc_is_am33xx() 0
238 #define soc_is_am335x() 0
239 #define soc_is_am43xx() 0
240 #define soc_is_am437x() 0
241 #define cpu_is_omap44xx() 0
242 #define cpu_is_omap443x() 0
243 #define cpu_is_omap446x() 0
244 #define cpu_is_omap447x() 0
245 #define soc_is_omap54xx() 0
246 #define soc_is_omap543x() 0
247 #define soc_is_dra7xx() 0
248 #define soc_is_dra74x() 0
249 #define soc_is_dra72x() 0
250
251 #if defined(MULTI_OMAP2)
252 # if defined(CONFIG_ARCH_OMAP2)
253 # undef cpu_is_omap24xx
254 # define cpu_is_omap24xx() is_omap24xx()
255 # endif
256 # if defined (CONFIG_SOC_OMAP2420)
257 # undef cpu_is_omap242x
258 # define cpu_is_omap242x() is_omap242x()
259 # endif
260 # if defined (CONFIG_SOC_OMAP2430)
261 # undef cpu_is_omap243x
262 # define cpu_is_omap243x() is_omap243x()
263 # endif
264 # if defined(CONFIG_ARCH_OMAP3)
265 # undef cpu_is_omap34xx
266 # undef cpu_is_omap343x
267 # define cpu_is_omap34xx() is_omap34xx()
268 # define cpu_is_omap343x() is_omap343x()
269 # endif
270 #else
271 # if defined(CONFIG_ARCH_OMAP2)
272 # undef cpu_is_omap24xx
273 # define cpu_is_omap24xx() 1
274 # endif
275 # if defined(CONFIG_SOC_OMAP2420)
276 # undef cpu_is_omap242x
277 # define cpu_is_omap242x() 1
278 # endif
279 # if defined(CONFIG_SOC_OMAP2430)
280 # undef cpu_is_omap243x
281 # define cpu_is_omap243x() 1
282 # endif
283 # if defined(CONFIG_ARCH_OMAP3)
284 # undef cpu_is_omap34xx
285 # define cpu_is_omap34xx() 1
286 # endif
287 # if defined(CONFIG_SOC_OMAP3430)
288 # undef cpu_is_omap343x
289 # define cpu_is_omap343x() 1
290 # endif
291 #endif
292
293 /*
294 * Macros to detect individual cpu types.
295 * These are only rarely needed.
296 * cpu_is_omap2420(): True for OMAP2420
297 * cpu_is_omap2422(): True for OMAP2422
298 * cpu_is_omap2423(): True for OMAP2423
299 * cpu_is_omap2430(): True for OMAP2430
300 * cpu_is_omap3430(): True for OMAP3430
301 */
302 #define GET_OMAP_TYPE ((omap_rev() >> 16) & 0xffff)
303
304 #define IS_OMAP_TYPE(type, id) \
305 static inline int is_omap ##type (void) \
306 { \
307 return (GET_OMAP_TYPE == (id)) ? 1 : 0; \
308 }
309
310 IS_OMAP_TYPE(2420, 0x2420)
311 IS_OMAP_TYPE(2422, 0x2422)
312 IS_OMAP_TYPE(2423, 0x2423)
313 IS_OMAP_TYPE(2430, 0x2430)
314 IS_OMAP_TYPE(3430, 0x3430)
315
316 #define cpu_is_omap2420() 0
317 #define cpu_is_omap2422() 0
318 #define cpu_is_omap2423() 0
319 #define cpu_is_omap2430() 0
320 #define cpu_is_omap3430() 0
321 #define cpu_is_omap3630() 0
322 #define soc_is_omap5430() 0
323
324 /* These are needed for the common code */
325 #ifdef CONFIG_ARCH_OMAP2PLUS
326 #define cpu_is_omap7xx() 0
327 #define cpu_is_omap15xx() 0
328 #define cpu_is_omap16xx() 0
329 #define cpu_is_omap1510() 0
330 #define cpu_is_omap1610() 0
331 #define cpu_is_omap1611() 0
332 #define cpu_is_omap1621() 0
333 #define cpu_is_omap1710() 0
334 #define cpu_class_is_omap1() 0
335 #define cpu_class_is_omap2() 1
336 #endif
337
338 #if defined(CONFIG_ARCH_OMAP2)
339 # undef cpu_is_omap2420
340 # undef cpu_is_omap2422
341 # undef cpu_is_omap2423
342 # undef cpu_is_omap2430
343 # define cpu_is_omap2420() is_omap2420()
344 # define cpu_is_omap2422() is_omap2422()
345 # define cpu_is_omap2423() is_omap2423()
346 # define cpu_is_omap2430() is_omap2430()
347 #endif
348
349 #if defined(CONFIG_ARCH_OMAP3)
350 # undef cpu_is_omap3430
351 # undef cpu_is_ti81xx
352 # undef cpu_is_ti816x
353 # undef cpu_is_ti814x
354 # undef soc_is_am35xx
355 # define cpu_is_omap3430() is_omap3430()
356 # undef cpu_is_omap3630
357 # define cpu_is_omap3630() is_omap363x()
358 # define cpu_is_ti81xx() is_ti81xx()
359 # define cpu_is_ti816x() is_ti816x()
360 # define cpu_is_ti814x() is_ti814x()
361 # define soc_is_am35xx() is_am35xx()
362 #endif
363
364 # if defined(CONFIG_SOC_AM33XX)
365 # undef soc_is_am33xx
366 # undef soc_is_am335x
367 # define soc_is_am33xx() is_am33xx()
368 # define soc_is_am335x() is_am335x()
369 #endif
370
371 #ifdef CONFIG_SOC_AM43XX
372 # undef soc_is_am43xx
373 # undef soc_is_am437x
374 # define soc_is_am43xx() is_am43xx()
375 # define soc_is_am437x() is_am437x()
376 #endif
377
378 # if defined(CONFIG_ARCH_OMAP4)
379 # undef cpu_is_omap44xx
380 # undef cpu_is_omap443x
381 # undef cpu_is_omap446x
382 # undef cpu_is_omap447x
383 # define cpu_is_omap44xx() is_omap44xx()
384 # define cpu_is_omap443x() is_omap443x()
385 # define cpu_is_omap446x() is_omap446x()
386 # define cpu_is_omap447x() is_omap447x()
387 # endif
388
389 # if defined(CONFIG_SOC_OMAP5)
390 # undef soc_is_omap54xx
391 # undef soc_is_omap543x
392 # define soc_is_omap54xx() is_omap54xx()
393 # define soc_is_omap543x() is_omap543x()
394 #endif
395
396 #if defined(CONFIG_SOC_DRA7XX)
397 #undef soc_is_dra7xx
398 #undef soc_is_dra74x
399 #undef soc_is_dra72x
400 #define soc_is_dra7xx() (of_machine_is_compatible("ti,dra7"))
401 #define soc_is_dra74x() (of_machine_is_compatible("ti,dra74"))
402 #define soc_is_dra72x() (of_machine_is_compatible("ti,dra72"))
403 #endif
404
405 /* Various silicon revisions for omap2 */
406 #define OMAP242X_CLASS 0x24200024
407 #define OMAP2420_REV_ES1_0 OMAP242X_CLASS
408 #define OMAP2420_REV_ES2_0 (OMAP242X_CLASS | (0x1 << 8))
409
410 #define OMAP243X_CLASS 0x24300024
411 #define OMAP2430_REV_ES1_0 OMAP243X_CLASS
412
413 #define OMAP343X_CLASS 0x34300034
414 #define OMAP3430_REV_ES1_0 OMAP343X_CLASS
415 #define OMAP3430_REV_ES2_0 (OMAP343X_CLASS | (0x1 << 8))
416 #define OMAP3430_REV_ES2_1 (OMAP343X_CLASS | (0x2 << 8))
417 #define OMAP3430_REV_ES3_0 (OMAP343X_CLASS | (0x3 << 8))
418 #define OMAP3430_REV_ES3_1 (OMAP343X_CLASS | (0x4 << 8))
419 #define OMAP3430_REV_ES3_1_2 (OMAP343X_CLASS | (0x5 << 8))
420
421 #define OMAP363X_CLASS 0x36300034
422 #define OMAP3630_REV_ES1_0 OMAP363X_CLASS
423 #define OMAP3630_REV_ES1_1 (OMAP363X_CLASS | (0x1 << 8))
424 #define OMAP3630_REV_ES1_2 (OMAP363X_CLASS | (0x2 << 8))
425
426 #define TI816X_CLASS 0x81600034
427 #define TI8168_REV_ES1_0 TI816X_CLASS
428 #define TI8168_REV_ES1_1 (TI816X_CLASS | (0x1 << 8))
429 #define TI8168_REV_ES2_0 (TI816X_CLASS | (0x2 << 8))
430 #define TI8168_REV_ES2_1 (TI816X_CLASS | (0x3 << 8))
431
432 #define TI814X_CLASS 0x81400034
433 #define TI8148_REV_ES1_0 TI814X_CLASS
434 #define TI8148_REV_ES2_0 (TI814X_CLASS | (0x1 << 8))
435 #define TI8148_REV_ES2_1 (TI814X_CLASS | (0x2 << 8))
436
437 #define AM35XX_CLASS 0x35170034
438 #define AM35XX_REV_ES1_0 AM35XX_CLASS
439 #define AM35XX_REV_ES1_1 (AM35XX_CLASS | (0x1 << 8))
440
441 #define AM335X_CLASS 0x33500033
442 #define AM335X_REV_ES1_0 AM335X_CLASS
443 #define AM335X_REV_ES2_0 (AM335X_CLASS | (0x1 << 8))
444 #define AM335X_REV_ES2_1 (AM335X_CLASS | (0x2 << 8))
445
446 #define AM437X_CLASS 0x43700000
447 #define AM437X_REV_ES1_0 (AM437X_CLASS | (0x10 << 8))
448 #define AM437X_REV_ES1_1 (AM437X_CLASS | (0x11 << 8))
449
450 #define OMAP443X_CLASS 0x44300044
451 #define OMAP4430_REV_ES1_0 (OMAP443X_CLASS | (0x10 << 8))
452 #define OMAP4430_REV_ES2_0 (OMAP443X_CLASS | (0x20 << 8))
453 #define OMAP4430_REV_ES2_1 (OMAP443X_CLASS | (0x21 << 8))
454 #define OMAP4430_REV_ES2_2 (OMAP443X_CLASS | (0x22 << 8))
455 #define OMAP4430_REV_ES2_3 (OMAP443X_CLASS | (0x23 << 8))
456
457 #define OMAP446X_CLASS 0x44600044
458 #define OMAP4460_REV_ES1_0 (OMAP446X_CLASS | (0x10 << 8))
459 #define OMAP4460_REV_ES1_1 (OMAP446X_CLASS | (0x11 << 8))
460
461 #define OMAP447X_CLASS 0x44700044
462 #define OMAP4470_REV_ES1_0 (OMAP447X_CLASS | (0x10 << 8))
463
464 #define OMAP54XX_CLASS 0x54000054
465 #define OMAP5430_REV_ES2_0 (OMAP54XX_CLASS | (0x30 << 16) | (0x20 << 8))
466 #define OMAP5432_REV_ES2_0 (OMAP54XX_CLASS | (0x32 << 16) | (0x20 << 8))
467
468 #define DRA7XX_CLASS 0x07000000
469 #define DRA752_REV_ES1_0 (DRA7XX_CLASS | (0x52 << 16) | (0x10 << 8))
470 #define DRA752_REV_ES1_1 (DRA7XX_CLASS | (0x52 << 16) | (0x11 << 8))
471 #define DRA722_REV_ES1_0 (DRA7XX_CLASS | (0x22 << 16) | (0x10 << 8))
472
473 void omap2xxx_check_revision(void);
474 void omap3xxx_check_revision(void);
475 void omap4xxx_check_revision(void);
476 void omap5xxx_check_revision(void);
477 void dra7xxx_check_revision(void);
478 void omap3xxx_check_features(void);
479 void ti81xx_check_features(void);
480 void am33xx_check_features(void);
481 void omap4xxx_check_features(void);
482
483 /*
484 * Runtime detection of OMAP3 features
485 *
486 * OMAP3_HAS_IO_CHAIN_CTRL: Some later members of the OMAP3 chip
487 * family have OS-level control over the I/O chain clock. This is
488 * to avoid a window during which wakeups could potentially be lost
489 * during powerdomain transitions. If this bit is set, it
490 * indicates that the chip does support OS-level control of this
491 * feature.
492 */
493 extern u32 omap_features;
494
495 #define OMAP3_HAS_L2CACHE BIT(0)
496 #define OMAP3_HAS_IVA BIT(1)
497 #define OMAP3_HAS_SGX BIT(2)
498 #define OMAP3_HAS_NEON BIT(3)
499 #define OMAP3_HAS_ISP BIT(4)
500 #define OMAP3_HAS_192MHZ_CLK BIT(5)
501 #define OMAP3_HAS_IO_WAKEUP BIT(6)
502 #define OMAP3_HAS_SDRC BIT(7)
503 #define OMAP3_HAS_IO_CHAIN_CTRL BIT(8)
504 #define OMAP4_HAS_PERF_SILICON BIT(9)
505
506
507 #define OMAP3_HAS_FEATURE(feat,flag) \
508 static inline unsigned int omap3_has_ ##feat(void) \
509 { \
510 return omap_features & OMAP3_HAS_ ##flag; \
511 } \
512
513 OMAP3_HAS_FEATURE(l2cache, L2CACHE)
514 OMAP3_HAS_FEATURE(sgx, SGX)
515 OMAP3_HAS_FEATURE(iva, IVA)
516 OMAP3_HAS_FEATURE(neon, NEON)
517 OMAP3_HAS_FEATURE(isp, ISP)
518 OMAP3_HAS_FEATURE(192mhz_clk, 192MHZ_CLK)
519 OMAP3_HAS_FEATURE(io_wakeup, IO_WAKEUP)
520 OMAP3_HAS_FEATURE(sdrc, SDRC)
521 OMAP3_HAS_FEATURE(io_chain_ctrl, IO_CHAIN_CTRL)
522
523 /*
524 * Runtime detection of OMAP4 features
525 */
526 #define OMAP4_HAS_FEATURE(feat, flag) \
527 static inline unsigned int omap4_has_ ##feat(void) \
528 { \
529 return omap_features & OMAP4_HAS_ ##flag; \
530 } \
531
532 OMAP4_HAS_FEATURE(perf_silicon, PERF_SILICON)
533
534 /*
535 * We need to make sure omap initcalls don't run when
536 * multiplatform kernels are booted on other SoCs.
537 */
538 #define omap_initcall(level, fn) \
539 static int __init __used __##fn(void) \
540 { \
541 if (!soc_is_omap()) \
542 return 0; \
543 return fn(); \
544 } \
545 level(__##fn);
546
547 #define omap_early_initcall(fn) omap_initcall(early_initcall, fn)
548 #define omap_core_initcall(fn) omap_initcall(core_initcall, fn)
549 #define omap_postcore_initcall(fn) omap_initcall(postcore_initcall, fn)
550 #define omap_arch_initcall(fn) omap_initcall(arch_initcall, fn)
551 #define omap_subsys_initcall(fn) omap_initcall(subsys_initcall, fn)
552 #define omap_device_initcall(fn) omap_initcall(device_initcall, fn)
553 #define omap_late_initcall(fn) omap_initcall(late_initcall, fn)
554 #define omap_late_initcall_sync(fn) omap_initcall(late_initcall_sync, fn)
555
556 #endif /* __ASSEMBLY__ */
557
558