1 /*
2 * Arm IoT Kit security controller
3 *
4 * Copyright (c) 2018 Linaro Limited
5 * Written by Peter Maydell
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 or
9 * (at your option) any later version.
10 */
11
12 #include "qemu/osdep.h"
13 #include "qemu/log.h"
14 #include "qemu/module.h"
15 #include "qapi/error.h"
16 #include "trace.h"
17 #include "hw/sysbus.h"
18 #include "migration/vmstate.h"
19 #include "hw/registerfields.h"
20 #include "hw/irq.h"
21 #include "hw/misc/iotkit-secctl.h"
22 #include "hw/arm/armsse-version.h"
23 #include "hw/qdev-properties.h"
24
25 /* Registers in the secure privilege control block */
26 REG32(SECRESPCFG, 0x10)
27 REG32(NSCCFG, 0x14)
28 REG32(SECMPCINTSTATUS, 0x1c)
29 REG32(SECPPCINTSTAT, 0x20)
30 REG32(SECPPCINTCLR, 0x24)
31 REG32(SECPPCINTEN, 0x28)
32 REG32(SECMSCINTSTAT, 0x30)
33 REG32(SECMSCINTCLR, 0x34)
34 REG32(SECMSCINTEN, 0x38)
35 REG32(BRGINTSTAT, 0x40)
36 REG32(BRGINTCLR, 0x44)
37 REG32(BRGINTEN, 0x48)
38 REG32(AHBNSPPC0, 0x50)
39 REG32(AHBNSPPCEXP0, 0x60)
40 REG32(AHBNSPPCEXP1, 0x64)
41 REG32(AHBNSPPCEXP2, 0x68)
42 REG32(AHBNSPPCEXP3, 0x6c)
43 REG32(APBNSPPC0, 0x70)
44 REG32(APBNSPPC1, 0x74)
45 REG32(APBNSPPCEXP0, 0x80)
46 REG32(APBNSPPCEXP1, 0x84)
47 REG32(APBNSPPCEXP2, 0x88)
48 REG32(APBNSPPCEXP3, 0x8c)
49 REG32(AHBSPPPC0, 0x90)
50 REG32(AHBSPPPCEXP0, 0xa0)
51 REG32(AHBSPPPCEXP1, 0xa4)
52 REG32(AHBSPPPCEXP2, 0xa8)
53 REG32(AHBSPPPCEXP3, 0xac)
54 REG32(APBSPPPC0, 0xb0)
55 REG32(APBSPPPC1, 0xb4)
56 REG32(APBSPPPCEXP0, 0xc0)
57 REG32(APBSPPPCEXP1, 0xc4)
58 REG32(APBSPPPCEXP2, 0xc8)
59 REG32(APBSPPPCEXP3, 0xcc)
60 REG32(NSMSCEXP, 0xd0)
61 REG32(PID4, 0xfd0)
62 REG32(PID5, 0xfd4)
63 REG32(PID6, 0xfd8)
64 REG32(PID7, 0xfdc)
65 REG32(PID0, 0xfe0)
66 REG32(PID1, 0xfe4)
67 REG32(PID2, 0xfe8)
68 REG32(PID3, 0xfec)
69 REG32(CID0, 0xff0)
70 REG32(CID1, 0xff4)
71 REG32(CID2, 0xff8)
72 REG32(CID3, 0xffc)
73
74 /* Registers in the non-secure privilege control block */
75 REG32(AHBNSPPPC0, 0x90)
76 REG32(AHBNSPPPCEXP0, 0xa0)
77 REG32(AHBNSPPPCEXP1, 0xa4)
78 REG32(AHBNSPPPCEXP2, 0xa8)
79 REG32(AHBNSPPPCEXP3, 0xac)
80 REG32(APBNSPPPC0, 0xb0)
81 REG32(APBNSPPPC1, 0xb4)
82 REG32(APBNSPPPCEXP0, 0xc0)
83 REG32(APBNSPPPCEXP1, 0xc4)
84 REG32(APBNSPPPCEXP2, 0xc8)
85 REG32(APBNSPPPCEXP3, 0xcc)
86 /* PID and CID registers are also present in the NS block */
87
88 static const uint8_t iotkit_secctl_s_idregs[] = {
89 0x04, 0x00, 0x00, 0x00,
90 0x52, 0xb8, 0x0b, 0x00,
91 0x0d, 0xf0, 0x05, 0xb1,
92 };
93
94 static const uint8_t iotkit_secctl_ns_idregs[] = {
95 0x04, 0x00, 0x00, 0x00,
96 0x53, 0xb8, 0x0b, 0x00,
97 0x0d, 0xf0, 0x05, 0xb1,
98 };
99
100 static const uint8_t iotkit_secctl_s_sse300_idregs[] = {
101 0x04, 0x00, 0x00, 0x00,
102 0x52, 0xb8, 0x2b, 0x00,
103 0x0d, 0xf0, 0x05, 0xb1,
104 };
105
106 static const uint8_t iotkit_secctl_ns_sse300_idregs[] = {
107 0x04, 0x00, 0x00, 0x00,
108 0x53, 0xb8, 0x2b, 0x00,
109 0x0d, 0xf0, 0x05, 0xb1,
110 };
111
112
113 /* The register sets for the various PPCs (AHB internal, APB internal,
114 * AHB expansion, APB expansion) are all set up so that they are
115 * in 16-aligned blocks so offsets 0xN0, 0xN4, 0xN8, 0xNC are PPCs
116 * 0, 1, 2, 3 of that type, so we can convert a register address offset
117 * into an index into a PPC array easily.
118 */
offset_to_ppc_idx(uint32_t offset)119 static inline int offset_to_ppc_idx(uint32_t offset)
120 {
121 return extract32(offset, 2, 2);
122 }
123
124 typedef void PerPPCFunction(IoTKitSecCtlPPC *ppc);
125
foreach_ppc(IoTKitSecCtl * s,PerPPCFunction * fn)126 static void foreach_ppc(IoTKitSecCtl *s, PerPPCFunction *fn)
127 {
128 int i;
129
130 for (i = 0; i < IOTS_NUM_APB_PPC; i++) {
131 fn(&s->apb[i]);
132 }
133 for (i = 0; i < IOTS_NUM_APB_EXP_PPC; i++) {
134 fn(&s->apbexp[i]);
135 }
136 for (i = 0; i < IOTS_NUM_AHB_EXP_PPC; i++) {
137 fn(&s->ahbexp[i]);
138 }
139 }
140
iotkit_secctl_s_read(void * opaque,hwaddr addr,uint64_t * pdata,unsigned size,MemTxAttrs attrs)141 static MemTxResult iotkit_secctl_s_read(void *opaque, hwaddr addr,
142 uint64_t *pdata,
143 unsigned size, MemTxAttrs attrs)
144 {
145 uint64_t r;
146 uint32_t offset = addr & ~0x3;
147 IoTKitSecCtl *s = IOTKIT_SECCTL(opaque);
148
149 switch (offset) {
150 case A_AHBNSPPC0:
151 case A_AHBSPPPC0:
152 r = 0;
153 break;
154 case A_SECRESPCFG:
155 r = s->secrespcfg;
156 break;
157 case A_NSCCFG:
158 r = s->nsccfg;
159 break;
160 case A_SECMPCINTSTATUS:
161 r = s->mpcintstatus;
162 break;
163 case A_SECPPCINTSTAT:
164 r = s->secppcintstat;
165 break;
166 case A_SECPPCINTEN:
167 r = s->secppcinten;
168 break;
169 case A_BRGINTSTAT:
170 /* QEMU's bus fabric can never report errors as it doesn't buffer
171 * writes, so we never report bridge interrupts.
172 */
173 r = 0;
174 break;
175 case A_BRGINTEN:
176 r = s->brginten;
177 break;
178 case A_AHBNSPPCEXP0:
179 case A_AHBNSPPCEXP1:
180 case A_AHBNSPPCEXP2:
181 case A_AHBNSPPCEXP3:
182 r = s->ahbexp[offset_to_ppc_idx(offset)].ns;
183 break;
184 case A_APBNSPPC0:
185 case A_APBNSPPC1:
186 r = s->apb[offset_to_ppc_idx(offset)].ns;
187 break;
188 case A_APBNSPPCEXP0:
189 case A_APBNSPPCEXP1:
190 case A_APBNSPPCEXP2:
191 case A_APBNSPPCEXP3:
192 r = s->apbexp[offset_to_ppc_idx(offset)].ns;
193 break;
194 case A_AHBSPPPCEXP0:
195 case A_AHBSPPPCEXP1:
196 case A_AHBSPPPCEXP2:
197 case A_AHBSPPPCEXP3:
198 r = s->apbexp[offset_to_ppc_idx(offset)].sp;
199 break;
200 case A_APBSPPPC0:
201 case A_APBSPPPC1:
202 r = s->apb[offset_to_ppc_idx(offset)].sp;
203 break;
204 case A_APBSPPPCEXP0:
205 case A_APBSPPPCEXP1:
206 case A_APBSPPPCEXP2:
207 case A_APBSPPPCEXP3:
208 r = s->apbexp[offset_to_ppc_idx(offset)].sp;
209 break;
210 case A_SECMSCINTSTAT:
211 r = s->secmscintstat;
212 break;
213 case A_SECMSCINTEN:
214 r = s->secmscinten;
215 break;
216 case A_NSMSCEXP:
217 r = s->nsmscexp;
218 break;
219 case A_PID4:
220 case A_PID5:
221 case A_PID6:
222 case A_PID7:
223 case A_PID0:
224 case A_PID1:
225 case A_PID2:
226 case A_PID3:
227 case A_CID0:
228 case A_CID1:
229 case A_CID2:
230 case A_CID3:
231 switch (s->sse_version) {
232 case ARMSSE_SSE300:
233 r = iotkit_secctl_s_sse300_idregs[(offset - A_PID4) / 4];
234 break;
235 default:
236 r = iotkit_secctl_s_idregs[(offset - A_PID4) / 4];
237 break;
238 }
239 break;
240 case A_SECPPCINTCLR:
241 case A_SECMSCINTCLR:
242 case A_BRGINTCLR:
243 qemu_log_mask(LOG_GUEST_ERROR,
244 "IotKit SecCtl S block read: write-only offset 0x%x\n",
245 offset);
246 r = 0;
247 break;
248 default:
249 qemu_log_mask(LOG_GUEST_ERROR,
250 "IotKit SecCtl S block read: bad offset 0x%x\n", offset);
251 r = 0;
252 break;
253 }
254
255 if (size != 4) {
256 /* None of our registers are access-sensitive, so just pull the right
257 * byte out of the word read result.
258 */
259 r = extract32(r, (addr & 3) * 8, size * 8);
260 }
261
262 trace_iotkit_secctl_s_read(offset, r, size);
263 *pdata = r;
264 return MEMTX_OK;
265 }
266
iotkit_secctl_update_ppc_ap(IoTKitSecCtlPPC * ppc)267 static void iotkit_secctl_update_ppc_ap(IoTKitSecCtlPPC *ppc)
268 {
269 int i;
270
271 for (i = 0; i < ppc->numports; i++) {
272 bool v;
273
274 if (extract32(ppc->ns, i, 1)) {
275 v = extract32(ppc->nsp, i, 1);
276 } else {
277 v = extract32(ppc->sp, i, 1);
278 }
279 qemu_set_irq(ppc->ap[i], v);
280 }
281 }
282
iotkit_secctl_ppc_ns_write(IoTKitSecCtlPPC * ppc,uint32_t value)283 static void iotkit_secctl_ppc_ns_write(IoTKitSecCtlPPC *ppc, uint32_t value)
284 {
285 int i;
286
287 ppc->ns = value & MAKE_64BIT_MASK(0, ppc->numports);
288 for (i = 0; i < ppc->numports; i++) {
289 qemu_set_irq(ppc->nonsec[i], extract32(ppc->ns, i, 1));
290 }
291 iotkit_secctl_update_ppc_ap(ppc);
292 }
293
iotkit_secctl_ppc_sp_write(IoTKitSecCtlPPC * ppc,uint32_t value)294 static void iotkit_secctl_ppc_sp_write(IoTKitSecCtlPPC *ppc, uint32_t value)
295 {
296 ppc->sp = value & MAKE_64BIT_MASK(0, ppc->numports);
297 iotkit_secctl_update_ppc_ap(ppc);
298 }
299
iotkit_secctl_ppc_nsp_write(IoTKitSecCtlPPC * ppc,uint32_t value)300 static void iotkit_secctl_ppc_nsp_write(IoTKitSecCtlPPC *ppc, uint32_t value)
301 {
302 ppc->nsp = value & MAKE_64BIT_MASK(0, ppc->numports);
303 iotkit_secctl_update_ppc_ap(ppc);
304 }
305
iotkit_secctl_ppc_update_irq_clear(IoTKitSecCtlPPC * ppc)306 static void iotkit_secctl_ppc_update_irq_clear(IoTKitSecCtlPPC *ppc)
307 {
308 uint32_t value = ppc->parent->secppcintstat;
309
310 qemu_set_irq(ppc->irq_clear, extract32(value, ppc->irq_bit_offset, 1));
311 }
312
iotkit_secctl_ppc_update_irq_enable(IoTKitSecCtlPPC * ppc)313 static void iotkit_secctl_ppc_update_irq_enable(IoTKitSecCtlPPC *ppc)
314 {
315 uint32_t value = ppc->parent->secppcinten;
316
317 qemu_set_irq(ppc->irq_enable, extract32(value, ppc->irq_bit_offset, 1));
318 }
319
iotkit_secctl_update_mscexp_irqs(qemu_irq * msc_irqs,uint32_t value)320 static void iotkit_secctl_update_mscexp_irqs(qemu_irq *msc_irqs, uint32_t value)
321 {
322 int i;
323
324 for (i = 0; i < IOTS_NUM_EXP_MSC; i++) {
325 qemu_set_irq(msc_irqs[i], extract32(value, i + 16, 1));
326 }
327 }
328
iotkit_secctl_update_msc_irq(IoTKitSecCtl * s)329 static void iotkit_secctl_update_msc_irq(IoTKitSecCtl *s)
330 {
331 /* Update the combined MSC IRQ, based on S_MSCEXP_STATUS and S_MSCEXP_EN */
332 bool level = s->secmscintstat & s->secmscinten;
333
334 qemu_set_irq(s->msc_irq, level);
335 }
336
iotkit_secctl_s_write(void * opaque,hwaddr addr,uint64_t value,unsigned size,MemTxAttrs attrs)337 static MemTxResult iotkit_secctl_s_write(void *opaque, hwaddr addr,
338 uint64_t value,
339 unsigned size, MemTxAttrs attrs)
340 {
341 IoTKitSecCtl *s = IOTKIT_SECCTL(opaque);
342 uint32_t offset = addr;
343 IoTKitSecCtlPPC *ppc;
344
345 trace_iotkit_secctl_s_write(offset, value, size);
346
347 if (size != 4) {
348 /* Byte and halfword writes are ignored */
349 qemu_log_mask(LOG_GUEST_ERROR,
350 "IotKit SecCtl S block write: bad size, ignored\n");
351 return MEMTX_OK;
352 }
353
354 switch (offset) {
355 case A_NSCCFG:
356 s->nsccfg = value & 3;
357 qemu_set_irq(s->nsc_cfg_irq, s->nsccfg);
358 break;
359 case A_SECRESPCFG:
360 value &= 1;
361 s->secrespcfg = value;
362 qemu_set_irq(s->sec_resp_cfg, s->secrespcfg);
363 break;
364 case A_SECPPCINTCLR:
365 s->secppcintstat &= ~(value & 0x00f000f3);
366 foreach_ppc(s, iotkit_secctl_ppc_update_irq_clear);
367 break;
368 case A_SECPPCINTEN:
369 s->secppcinten = value & 0x00f000f3;
370 foreach_ppc(s, iotkit_secctl_ppc_update_irq_enable);
371 break;
372 case A_BRGINTCLR:
373 break;
374 case A_BRGINTEN:
375 s->brginten = value & 0xffff0000;
376 break;
377 case A_AHBNSPPCEXP0:
378 case A_AHBNSPPCEXP1:
379 case A_AHBNSPPCEXP2:
380 case A_AHBNSPPCEXP3:
381 ppc = &s->ahbexp[offset_to_ppc_idx(offset)];
382 iotkit_secctl_ppc_ns_write(ppc, value);
383 break;
384 case A_APBNSPPC0:
385 case A_APBNSPPC1:
386 ppc = &s->apb[offset_to_ppc_idx(offset)];
387 iotkit_secctl_ppc_ns_write(ppc, value);
388 break;
389 case A_APBNSPPCEXP0:
390 case A_APBNSPPCEXP1:
391 case A_APBNSPPCEXP2:
392 case A_APBNSPPCEXP3:
393 ppc = &s->apbexp[offset_to_ppc_idx(offset)];
394 iotkit_secctl_ppc_ns_write(ppc, value);
395 break;
396 case A_AHBSPPPCEXP0:
397 case A_AHBSPPPCEXP1:
398 case A_AHBSPPPCEXP2:
399 case A_AHBSPPPCEXP3:
400 ppc = &s->ahbexp[offset_to_ppc_idx(offset)];
401 iotkit_secctl_ppc_sp_write(ppc, value);
402 break;
403 case A_APBSPPPC0:
404 case A_APBSPPPC1:
405 ppc = &s->apb[offset_to_ppc_idx(offset)];
406 iotkit_secctl_ppc_sp_write(ppc, value);
407 break;
408 case A_APBSPPPCEXP0:
409 case A_APBSPPPCEXP1:
410 case A_APBSPPPCEXP2:
411 case A_APBSPPPCEXP3:
412 ppc = &s->apbexp[offset_to_ppc_idx(offset)];
413 iotkit_secctl_ppc_sp_write(ppc, value);
414 break;
415 case A_SECMSCINTCLR:
416 iotkit_secctl_update_mscexp_irqs(s->mscexp_clear, value);
417 break;
418 case A_SECMSCINTEN:
419 s->secmscinten = value;
420 iotkit_secctl_update_msc_irq(s);
421 break;
422 case A_NSMSCEXP:
423 s->nsmscexp = value;
424 iotkit_secctl_update_mscexp_irqs(s->mscexp_ns, value);
425 break;
426 case A_SECMPCINTSTATUS:
427 case A_SECPPCINTSTAT:
428 case A_SECMSCINTSTAT:
429 case A_BRGINTSTAT:
430 case A_AHBNSPPC0:
431 case A_AHBSPPPC0:
432 case A_PID4:
433 case A_PID5:
434 case A_PID6:
435 case A_PID7:
436 case A_PID0:
437 case A_PID1:
438 case A_PID2:
439 case A_PID3:
440 case A_CID0:
441 case A_CID1:
442 case A_CID2:
443 case A_CID3:
444 qemu_log_mask(LOG_GUEST_ERROR,
445 "IoTKit SecCtl S block write: "
446 "read-only offset 0x%x\n", offset);
447 break;
448 default:
449 qemu_log_mask(LOG_GUEST_ERROR,
450 "IotKit SecCtl S block write: bad offset 0x%x\n",
451 offset);
452 break;
453 }
454
455 return MEMTX_OK;
456 }
457
iotkit_secctl_ns_read(void * opaque,hwaddr addr,uint64_t * pdata,unsigned size,MemTxAttrs attrs)458 static MemTxResult iotkit_secctl_ns_read(void *opaque, hwaddr addr,
459 uint64_t *pdata,
460 unsigned size, MemTxAttrs attrs)
461 {
462 IoTKitSecCtl *s = IOTKIT_SECCTL(opaque);
463 uint64_t r;
464 uint32_t offset = addr & ~0x3;
465
466 switch (offset) {
467 case A_AHBNSPPPC0:
468 r = 0;
469 break;
470 case A_AHBNSPPPCEXP0:
471 case A_AHBNSPPPCEXP1:
472 case A_AHBNSPPPCEXP2:
473 case A_AHBNSPPPCEXP3:
474 r = s->ahbexp[offset_to_ppc_idx(offset)].nsp;
475 break;
476 case A_APBNSPPPC0:
477 case A_APBNSPPPC1:
478 r = s->apb[offset_to_ppc_idx(offset)].nsp;
479 break;
480 case A_APBNSPPPCEXP0:
481 case A_APBNSPPPCEXP1:
482 case A_APBNSPPPCEXP2:
483 case A_APBNSPPPCEXP3:
484 r = s->apbexp[offset_to_ppc_idx(offset)].nsp;
485 break;
486 case A_PID4:
487 case A_PID5:
488 case A_PID6:
489 case A_PID7:
490 case A_PID0:
491 case A_PID1:
492 case A_PID2:
493 case A_PID3:
494 case A_CID0:
495 case A_CID1:
496 case A_CID2:
497 case A_CID3:
498 switch (s->sse_version) {
499 case ARMSSE_SSE300:
500 r = iotkit_secctl_ns_sse300_idregs[(offset - A_PID4) / 4];
501 break;
502 default:
503 r = iotkit_secctl_ns_idregs[(offset - A_PID4) / 4];
504 break;
505 }
506 break;
507 default:
508 qemu_log_mask(LOG_GUEST_ERROR,
509 "IotKit SecCtl NS block write: bad offset 0x%x\n",
510 offset);
511 r = 0;
512 break;
513 }
514
515 if (size != 4) {
516 /* None of our registers are access-sensitive, so just pull the right
517 * byte out of the word read result.
518 */
519 r = extract32(r, (addr & 3) * 8, size * 8);
520 }
521
522 trace_iotkit_secctl_ns_read(offset, r, size);
523 *pdata = r;
524 return MEMTX_OK;
525 }
526
iotkit_secctl_ns_write(void * opaque,hwaddr addr,uint64_t value,unsigned size,MemTxAttrs attrs)527 static MemTxResult iotkit_secctl_ns_write(void *opaque, hwaddr addr,
528 uint64_t value,
529 unsigned size, MemTxAttrs attrs)
530 {
531 IoTKitSecCtl *s = IOTKIT_SECCTL(opaque);
532 uint32_t offset = addr;
533 IoTKitSecCtlPPC *ppc;
534
535 trace_iotkit_secctl_ns_write(offset, value, size);
536
537 if (size != 4) {
538 /* Byte and halfword writes are ignored */
539 qemu_log_mask(LOG_GUEST_ERROR,
540 "IotKit SecCtl NS block write: bad size, ignored\n");
541 return MEMTX_OK;
542 }
543
544 switch (offset) {
545 case A_AHBNSPPPCEXP0:
546 case A_AHBNSPPPCEXP1:
547 case A_AHBNSPPPCEXP2:
548 case A_AHBNSPPPCEXP3:
549 ppc = &s->ahbexp[offset_to_ppc_idx(offset)];
550 iotkit_secctl_ppc_nsp_write(ppc, value);
551 break;
552 case A_APBNSPPPC0:
553 case A_APBNSPPPC1:
554 ppc = &s->apb[offset_to_ppc_idx(offset)];
555 iotkit_secctl_ppc_nsp_write(ppc, value);
556 break;
557 case A_APBNSPPPCEXP0:
558 case A_APBNSPPPCEXP1:
559 case A_APBNSPPPCEXP2:
560 case A_APBNSPPPCEXP3:
561 ppc = &s->apbexp[offset_to_ppc_idx(offset)];
562 iotkit_secctl_ppc_nsp_write(ppc, value);
563 break;
564 case A_AHBNSPPPC0:
565 case A_PID4:
566 case A_PID5:
567 case A_PID6:
568 case A_PID7:
569 case A_PID0:
570 case A_PID1:
571 case A_PID2:
572 case A_PID3:
573 case A_CID0:
574 case A_CID1:
575 case A_CID2:
576 case A_CID3:
577 qemu_log_mask(LOG_GUEST_ERROR,
578 "IoTKit SecCtl NS block write: "
579 "read-only offset 0x%x\n", offset);
580 break;
581 default:
582 qemu_log_mask(LOG_GUEST_ERROR,
583 "IotKit SecCtl NS block write: bad offset 0x%x\n",
584 offset);
585 break;
586 }
587
588 return MEMTX_OK;
589 }
590
591 static const MemoryRegionOps iotkit_secctl_s_ops = {
592 .read_with_attrs = iotkit_secctl_s_read,
593 .write_with_attrs = iotkit_secctl_s_write,
594 .endianness = DEVICE_LITTLE_ENDIAN,
595 .valid.min_access_size = 1,
596 .valid.max_access_size = 4,
597 .impl.min_access_size = 1,
598 .impl.max_access_size = 4,
599 };
600
601 static const MemoryRegionOps iotkit_secctl_ns_ops = {
602 .read_with_attrs = iotkit_secctl_ns_read,
603 .write_with_attrs = iotkit_secctl_ns_write,
604 .endianness = DEVICE_LITTLE_ENDIAN,
605 .valid.min_access_size = 1,
606 .valid.max_access_size = 4,
607 .impl.min_access_size = 1,
608 .impl.max_access_size = 4,
609 };
610
iotkit_secctl_reset_ppc(IoTKitSecCtlPPC * ppc)611 static void iotkit_secctl_reset_ppc(IoTKitSecCtlPPC *ppc)
612 {
613 ppc->ns = 0;
614 ppc->sp = 0;
615 ppc->nsp = 0;
616 }
617
iotkit_secctl_reset(DeviceState * dev)618 static void iotkit_secctl_reset(DeviceState *dev)
619 {
620 IoTKitSecCtl *s = IOTKIT_SECCTL(dev);
621
622 s->secppcintstat = 0;
623 s->secppcinten = 0;
624 s->secrespcfg = 0;
625 s->nsccfg = 0;
626 s->brginten = 0;
627
628 foreach_ppc(s, iotkit_secctl_reset_ppc);
629 }
630
iotkit_secctl_mpc_status(void * opaque,int n,int level)631 static void iotkit_secctl_mpc_status(void *opaque, int n, int level)
632 {
633 IoTKitSecCtl *s = IOTKIT_SECCTL(opaque);
634
635 s->mpcintstatus = deposit32(s->mpcintstatus, n, 1, !!level);
636 }
637
iotkit_secctl_mpcexp_status(void * opaque,int n,int level)638 static void iotkit_secctl_mpcexp_status(void *opaque, int n, int level)
639 {
640 IoTKitSecCtl *s = IOTKIT_SECCTL(opaque);
641
642 s->mpcintstatus = deposit32(s->mpcintstatus, n + 16, 1, !!level);
643 }
644
iotkit_secctl_mscexp_status(void * opaque,int n,int level)645 static void iotkit_secctl_mscexp_status(void *opaque, int n, int level)
646 {
647 IoTKitSecCtl *s = IOTKIT_SECCTL(opaque);
648
649 s->secmscintstat = deposit32(s->secmscintstat, n + 16, 1, !!level);
650 iotkit_secctl_update_msc_irq(s);
651 }
652
iotkit_secctl_ppc_irqstatus(void * opaque,int n,int level)653 static void iotkit_secctl_ppc_irqstatus(void *opaque, int n, int level)
654 {
655 IoTKitSecCtlPPC *ppc = opaque;
656 IoTKitSecCtl *s = IOTKIT_SECCTL(ppc->parent);
657 int irqbit = ppc->irq_bit_offset + n;
658
659 s->secppcintstat = deposit32(s->secppcintstat, irqbit, 1, level);
660 }
661
iotkit_secctl_init_ppc(IoTKitSecCtl * s,IoTKitSecCtlPPC * ppc,const char * name,int numports,int irq_bit_offset)662 static void iotkit_secctl_init_ppc(IoTKitSecCtl *s,
663 IoTKitSecCtlPPC *ppc,
664 const char *name,
665 int numports,
666 int irq_bit_offset)
667 {
668 char *gpioname;
669 DeviceState *dev = DEVICE(s);
670
671 ppc->numports = numports;
672 ppc->irq_bit_offset = irq_bit_offset;
673 ppc->parent = s;
674
675 gpioname = g_strdup_printf("%s_nonsec", name);
676 qdev_init_gpio_out_named(dev, ppc->nonsec, gpioname, numports);
677 g_free(gpioname);
678 gpioname = g_strdup_printf("%s_ap", name);
679 qdev_init_gpio_out_named(dev, ppc->ap, gpioname, numports);
680 g_free(gpioname);
681 gpioname = g_strdup_printf("%s_irq_enable", name);
682 qdev_init_gpio_out_named(dev, &ppc->irq_enable, gpioname, 1);
683 g_free(gpioname);
684 gpioname = g_strdup_printf("%s_irq_clear", name);
685 qdev_init_gpio_out_named(dev, &ppc->irq_clear, gpioname, 1);
686 g_free(gpioname);
687 gpioname = g_strdup_printf("%s_irq_status", name);
688 qdev_init_gpio_in_named_with_opaque(dev, iotkit_secctl_ppc_irqstatus,
689 ppc, gpioname, 1);
690 g_free(gpioname);
691 }
692
iotkit_secctl_init(Object * obj)693 static void iotkit_secctl_init(Object *obj)
694 {
695 IoTKitSecCtl *s = IOTKIT_SECCTL(obj);
696 SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
697 DeviceState *dev = DEVICE(obj);
698 int i;
699
700 iotkit_secctl_init_ppc(s, &s->apb[0], "apb_ppc0",
701 IOTS_APB_PPC0_NUM_PORTS, 0);
702 iotkit_secctl_init_ppc(s, &s->apb[1], "apb_ppc1",
703 IOTS_APB_PPC1_NUM_PORTS, 1);
704
705 for (i = 0; i < IOTS_NUM_APB_EXP_PPC; i++) {
706 IoTKitSecCtlPPC *ppc = &s->apbexp[i];
707 char *ppcname = g_strdup_printf("apb_ppcexp%d", i);
708 iotkit_secctl_init_ppc(s, ppc, ppcname, IOTS_PPC_NUM_PORTS, 4 + i);
709 g_free(ppcname);
710 }
711 for (i = 0; i < IOTS_NUM_AHB_EXP_PPC; i++) {
712 IoTKitSecCtlPPC *ppc = &s->ahbexp[i];
713 char *ppcname = g_strdup_printf("ahb_ppcexp%d", i);
714 iotkit_secctl_init_ppc(s, ppc, ppcname, IOTS_PPC_NUM_PORTS, 20 + i);
715 g_free(ppcname);
716 }
717
718 qdev_init_gpio_out_named(dev, &s->sec_resp_cfg, "sec_resp_cfg", 1);
719 qdev_init_gpio_out_named(dev, &s->nsc_cfg_irq, "nsc_cfg", 1);
720
721 qdev_init_gpio_in_named(dev, iotkit_secctl_mpc_status, "mpc_status",
722 IOTS_NUM_MPC);
723 qdev_init_gpio_in_named(dev, iotkit_secctl_mpcexp_status,
724 "mpcexp_status", IOTS_NUM_EXP_MPC);
725
726 qdev_init_gpio_in_named(dev, iotkit_secctl_mscexp_status,
727 "mscexp_status", IOTS_NUM_EXP_MSC);
728 qdev_init_gpio_out_named(dev, s->mscexp_clear, "mscexp_clear",
729 IOTS_NUM_EXP_MSC);
730 qdev_init_gpio_out_named(dev, s->mscexp_ns, "mscexp_ns",
731 IOTS_NUM_EXP_MSC);
732 qdev_init_gpio_out_named(dev, &s->msc_irq, "msc_irq", 1);
733
734 memory_region_init_io(&s->s_regs, obj, &iotkit_secctl_s_ops,
735 s, "iotkit-secctl-s-regs", 0x1000);
736 memory_region_init_io(&s->ns_regs, obj, &iotkit_secctl_ns_ops,
737 s, "iotkit-secctl-ns-regs", 0x1000);
738 sysbus_init_mmio(sbd, &s->s_regs);
739 sysbus_init_mmio(sbd, &s->ns_regs);
740 }
741
iotkit_secctl_realize(DeviceState * dev,Error ** errp)742 static void iotkit_secctl_realize(DeviceState *dev, Error **errp)
743 {
744 IoTKitSecCtl *s = IOTKIT_SECCTL(dev);
745
746 if (!armsse_version_valid(s->sse_version)) {
747 error_setg(errp, "invalid sse-version value %d", s->sse_version);
748 return;
749 }
750 }
751
752 static const VMStateDescription iotkit_secctl_ppc_vmstate = {
753 .name = "iotkit-secctl-ppc",
754 .version_id = 1,
755 .minimum_version_id = 1,
756 .fields = (const VMStateField[]) {
757 VMSTATE_UINT32(ns, IoTKitSecCtlPPC),
758 VMSTATE_UINT32(sp, IoTKitSecCtlPPC),
759 VMSTATE_UINT32(nsp, IoTKitSecCtlPPC),
760 VMSTATE_END_OF_LIST()
761 }
762 };
763
764 static const VMStateDescription iotkit_secctl_mpcintstatus_vmstate = {
765 .name = "iotkit-secctl-mpcintstatus",
766 .version_id = 1,
767 .minimum_version_id = 1,
768 .fields = (const VMStateField[]) {
769 VMSTATE_UINT32(mpcintstatus, IoTKitSecCtl),
770 VMSTATE_END_OF_LIST()
771 }
772 };
773
needed_always(void * opaque)774 static bool needed_always(void *opaque)
775 {
776 return true;
777 }
778
779 static const VMStateDescription iotkit_secctl_msc_vmstate = {
780 .name = "iotkit-secctl/msc",
781 .version_id = 1,
782 .minimum_version_id = 1,
783 .needed = needed_always,
784 .fields = (const VMStateField[]) {
785 VMSTATE_UINT32(secmscintstat, IoTKitSecCtl),
786 VMSTATE_UINT32(secmscinten, IoTKitSecCtl),
787 VMSTATE_UINT32(nsmscexp, IoTKitSecCtl),
788 VMSTATE_END_OF_LIST()
789 }
790 };
791
792 static const VMStateDescription iotkit_secctl_vmstate = {
793 .name = "iotkit-secctl",
794 .version_id = 1,
795 .minimum_version_id = 1,
796 .fields = (const VMStateField[]) {
797 VMSTATE_UINT32(secppcintstat, IoTKitSecCtl),
798 VMSTATE_UINT32(secppcinten, IoTKitSecCtl),
799 VMSTATE_UINT32(secrespcfg, IoTKitSecCtl),
800 VMSTATE_UINT32(nsccfg, IoTKitSecCtl),
801 VMSTATE_UINT32(brginten, IoTKitSecCtl),
802 VMSTATE_STRUCT_ARRAY(apb, IoTKitSecCtl, IOTS_NUM_APB_PPC, 1,
803 iotkit_secctl_ppc_vmstate, IoTKitSecCtlPPC),
804 VMSTATE_STRUCT_ARRAY(apbexp, IoTKitSecCtl, IOTS_NUM_APB_EXP_PPC, 1,
805 iotkit_secctl_ppc_vmstate, IoTKitSecCtlPPC),
806 VMSTATE_STRUCT_ARRAY(ahbexp, IoTKitSecCtl, IOTS_NUM_AHB_EXP_PPC, 1,
807 iotkit_secctl_ppc_vmstate, IoTKitSecCtlPPC),
808 VMSTATE_END_OF_LIST()
809 },
810 .subsections = (const VMStateDescription * const []) {
811 &iotkit_secctl_mpcintstatus_vmstate,
812 &iotkit_secctl_msc_vmstate,
813 NULL
814 },
815 };
816
817 static Property iotkit_secctl_props[] = {
818 DEFINE_PROP_UINT32("sse-version", IoTKitSecCtl, sse_version, 0),
819 DEFINE_PROP_END_OF_LIST()
820 };
821
iotkit_secctl_class_init(ObjectClass * klass,void * data)822 static void iotkit_secctl_class_init(ObjectClass *klass, void *data)
823 {
824 DeviceClass *dc = DEVICE_CLASS(klass);
825
826 dc->vmsd = &iotkit_secctl_vmstate;
827 dc->reset = iotkit_secctl_reset;
828 dc->realize = iotkit_secctl_realize;
829 device_class_set_props(dc, iotkit_secctl_props);
830 }
831
832 static const TypeInfo iotkit_secctl_info = {
833 .name = TYPE_IOTKIT_SECCTL,
834 .parent = TYPE_SYS_BUS_DEVICE,
835 .instance_size = sizeof(IoTKitSecCtl),
836 .instance_init = iotkit_secctl_init,
837 .class_init = iotkit_secctl_class_init,
838 };
839
iotkit_secctl_register_types(void)840 static void iotkit_secctl_register_types(void)
841 {
842 type_register_static(&iotkit_secctl_info);
843 }
844
845 type_init(iotkit_secctl_register_types);
846