hw/misc/iotkit-secctl.c

   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 an index into a PPC array easily.
 118  */
 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
 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
 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
 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
 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
 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
 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
 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
 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
 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
 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
 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
 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
 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
 611 static void iotkit_secctl_reset_ppc(IoTKitSecCtlPPC *ppc)
 612 {
 613     ppc->ns = 0;
 614     ppc->sp = 0;
 615     ppc->nsp = 0;
 616 }
 617
 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
 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
 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
 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
 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
 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
 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
 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 = (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 = (VMStateField[]) {
 769         VMSTATE_UINT32(mpcintstatus, IoTKitSecCtl),
 770         VMSTATE_END_OF_LIST()
 771     }
 772 };
 773
 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 = (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 = (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*[]) {
 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
 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
 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);