hw/misc/arm_sysctl.c

   1 /*
   2  * Status and system control registers for ARM RealView/Versatile boards.
   3  *
   4  * Copyright (c) 2006-2007 CodeSourcery.
   5  * Written by Paul Brook
   6  *
   7  * This code is licensed under the GPL.
   8  */
   9
  10 #include "qemu/osdep.h"
  11 #include "hw/irq.h"
  12 #include "hw/qdev-properties.h"
  13 #include "qemu/timer.h"
  14 #include "sysemu/runstate.h"
  15 #include "qemu/bitops.h"
  16 #include "hw/sysbus.h"
  17 #include "migration/vmstate.h"
  18 #include "hw/arm/primecell.h"
  19 #include "qemu/log.h"
  20 #include "qemu/module.h"
  21 #include "qom/object.h"
  22
  23 #define LOCK_VALUE 0xa05f
  24
  25 #define TYPE_ARM_SYSCTL "realview_sysctl"
  26 OBJECT_DECLARE_SIMPLE_TYPE(arm_sysctl_state, ARM_SYSCTL)
  27
  28 struct arm_sysctl_state {
  29     SysBusDevice parent_obj;
  30
  31     MemoryRegion iomem;
  32     qemu_irq pl110_mux_ctrl;
  33
  34     uint32_t sys_id;
  35     uint32_t leds;
  36     uint16_t lockval;
  37     uint32_t cfgdata1;
  38     uint32_t cfgdata2;
  39     uint32_t flags;
  40     uint32_t nvflags;
  41     uint32_t resetlevel;
  42     uint32_t proc_id;
  43     uint32_t sys_mci;
  44     uint32_t sys_cfgdata;
  45     uint32_t sys_cfgctrl;
  46     uint32_t sys_cfgstat;
  47     uint32_t sys_clcd;
  48     uint32_t mb_clock[6];
  49     uint32_t *db_clock;
  50     uint32_t db_num_vsensors;
  51     uint32_t *db_voltage;
  52     uint32_t db_num_clocks;
  53     uint32_t *db_clock_reset;
  54 };
  55
  56 static const VMStateDescription vmstate_arm_sysctl = {
  57     .name = "realview_sysctl",
  58     .version_id = 4,
  59     .minimum_version_id = 1,
  60     .fields = (VMStateField[]) {
  61         VMSTATE_UINT32(leds, arm_sysctl_state),
  62         VMSTATE_UINT16(lockval, arm_sysctl_state),
  63         VMSTATE_UINT32(cfgdata1, arm_sysctl_state),
  64         VMSTATE_UINT32(cfgdata2, arm_sysctl_state),
  65         VMSTATE_UINT32(flags, arm_sysctl_state),
  66         VMSTATE_UINT32(nvflags, arm_sysctl_state),
  67         VMSTATE_UINT32(resetlevel, arm_sysctl_state),
  68         VMSTATE_UINT32_V(sys_mci, arm_sysctl_state, 2),
  69         VMSTATE_UINT32_V(sys_cfgdata, arm_sysctl_state, 2),
  70         VMSTATE_UINT32_V(sys_cfgctrl, arm_sysctl_state, 2),
  71         VMSTATE_UINT32_V(sys_cfgstat, arm_sysctl_state, 2),
  72         VMSTATE_UINT32_V(sys_clcd, arm_sysctl_state, 3),
  73         VMSTATE_UINT32_ARRAY_V(mb_clock, arm_sysctl_state, 6, 4),
  74         VMSTATE_VARRAY_UINT32(db_clock, arm_sysctl_state, db_num_clocks,
  75                               4, vmstate_info_uint32, uint32_t),
  76         VMSTATE_END_OF_LIST()
  77     }
  78 };
  79
  80 /* The PB926 actually uses a different format for
  81  * its SYS_ID register. Fortunately the bits which are
  82  * board type on later boards are distinct.
  83  */
  84 #define BOARD_ID_PB926 0x100
  85 #define BOARD_ID_EB 0x140
  86 #define BOARD_ID_PBA8 0x178
  87 #define BOARD_ID_PBX 0x182
  88 #define BOARD_ID_VEXPRESS 0x190
  89
  90 static int board_id(arm_sysctl_state *s)
  91 {
  92     /* Extract the board ID field from the SYS_ID register value */
  93     return (s->sys_id >> 16) & 0xfff;
  94 }
  95
  96 static void arm_sysctl_reset(DeviceState *d)
  97 {
  98     arm_sysctl_state *s = ARM_SYSCTL(d);
  99     int i;
 100
 101     s->leds = 0;
 102     s->lockval = 0;
 103     s->cfgdata1 = 0;
 104     s->cfgdata2 = 0;
 105     s->flags = 0;
 106     s->resetlevel = 0;
 107     /* Motherboard oscillators (in Hz) */
 108     s->mb_clock[0] = 50000000; /* Static memory clock: 50MHz */
 109     s->mb_clock[1] = 23750000; /* motherboard CLCD clock: 23.75MHz */
 110     s->mb_clock[2] = 24000000; /* IO FPGA peripheral clock: 24MHz */
 111     s->mb_clock[3] = 24000000; /* IO FPGA reserved clock: 24MHz */
 112     s->mb_clock[4] = 24000000; /* System bus global clock: 24MHz */
 113     s->mb_clock[5] = 24000000; /* IO FPGA reserved clock: 24MHz */
 114     /* Daughterboard oscillators: reset from property values */
 115     for (i = 0; i < s->db_num_clocks; i++) {
 116         s->db_clock[i] = s->db_clock_reset[i];
 117     }
 118     if (board_id(s) == BOARD_ID_VEXPRESS) {
 119         /* On VExpress this register will RAZ/WI */
 120         s->sys_clcd = 0;
 121     } else {
 122         /* All others: CLCDID 0x1f, indicating VGA */
 123         s->sys_clcd = 0x1f00;
 124     }
 125 }
 126
 127 static uint64_t arm_sysctl_read(void *opaque, hwaddr offset,
 128                                 unsigned size)
 129 {
 130     arm_sysctl_state *s = (arm_sysctl_state *)opaque;
 131
 132     switch (offset) {
 133     case 0x00: /* ID */
 134         return s->sys_id;
 135     case 0x04: /* SW */
 136         /* General purpose hardware switches.
 137            We don't have a useful way of exposing these to the user.  */
 138         return 0;
 139     case 0x08: /* LED */
 140         return s->leds;
 141     case 0x20: /* LOCK */
 142         return s->lockval;
 143     case 0x0c: /* OSC0 */
 144     case 0x10: /* OSC1 */
 145     case 0x14: /* OSC2 */
 146     case 0x18: /* OSC3 */
 147     case 0x1c: /* OSC4 */
 148     case 0x24: /* 100HZ */
 149         /* ??? Implement these.  */
 150         return 0;
 151     case 0x28: /* CFGDATA1 */
 152         return s->cfgdata1;
 153     case 0x2c: /* CFGDATA2 */
 154         return s->cfgdata2;
 155     case 0x30: /* FLAGS */
 156         return s->flags;
 157     case 0x38: /* NVFLAGS */
 158         return s->nvflags;
 159     case 0x40: /* RESETCTL */
 160         if (board_id(s) == BOARD_ID_VEXPRESS) {
 161             /* reserved: RAZ/WI */
 162             return 0;
 163         }
 164         return s->resetlevel;
 165     case 0x44: /* PCICTL */
 166         return 1;
 167     case 0x48: /* MCI */
 168         return s->sys_mci;
 169     case 0x4c: /* FLASH */
 170         return 0;
 171     case 0x50: /* CLCD */
 172         return s->sys_clcd;
 173     case 0x54: /* CLCDSER */
 174         return 0;
 175     case 0x58: /* BOOTCS */
 176         return 0;
 177     case 0x5c: /* 24MHz */
 178         return muldiv64(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), 24000000,
 179                         NANOSECONDS_PER_SECOND);
 180     case 0x60: /* MISC */
 181         return 0;
 182     case 0x84: /* PROCID0 */
 183         return s->proc_id;
 184     case 0x88: /* PROCID1 */
 185         return 0xff000000;
 186     case 0x64: /* DMAPSR0 */
 187     case 0x68: /* DMAPSR1 */
 188     case 0x6c: /* DMAPSR2 */
 189     case 0x70: /* IOSEL */
 190     case 0x74: /* PLDCTL */
 191     case 0x80: /* BUSID */
 192     case 0x8c: /* OSCRESET0 */
 193     case 0x90: /* OSCRESET1 */
 194     case 0x94: /* OSCRESET2 */
 195     case 0x98: /* OSCRESET3 */
 196     case 0x9c: /* OSCRESET4 */
 197     case 0xc0: /* SYS_TEST_OSC0 */
 198     case 0xc4: /* SYS_TEST_OSC1 */
 199     case 0xc8: /* SYS_TEST_OSC2 */
 200     case 0xcc: /* SYS_TEST_OSC3 */
 201     case 0xd0: /* SYS_TEST_OSC4 */
 202         return 0;
 203     case 0xa0: /* SYS_CFGDATA */
 204         if (board_id(s) != BOARD_ID_VEXPRESS) {
 205             goto bad_reg;
 206         }
 207         return s->sys_cfgdata;
 208     case 0xa4: /* SYS_CFGCTRL */
 209         if (board_id(s) != BOARD_ID_VEXPRESS) {
 210             goto bad_reg;
 211         }
 212         return s->sys_cfgctrl;
 213     case 0xa8: /* SYS_CFGSTAT */
 214         if (board_id(s) != BOARD_ID_VEXPRESS) {
 215             goto bad_reg;
 216         }
 217         return s->sys_cfgstat;
 218     default:
 219     bad_reg:
 220         qemu_log_mask(LOG_GUEST_ERROR,
 221                       "arm_sysctl_read: Bad register offset 0x%x\n",
 222                       (int)offset);
 223         return 0;
 224     }
 225 }
 226
 227 /* SYS_CFGCTRL functions */
 228 #define SYS_CFG_OSC 1
 229 #define SYS_CFG_VOLT 2
 230 #define SYS_CFG_AMP 3
 231 #define SYS_CFG_TEMP 4
 232 #define SYS_CFG_RESET 5
 233 #define SYS_CFG_SCC 6
 234 #define SYS_CFG_MUXFPGA 7
 235 #define SYS_CFG_SHUTDOWN 8
 236 #define SYS_CFG_REBOOT 9
 237 #define SYS_CFG_DVIMODE 11
 238 #define SYS_CFG_POWER 12
 239 #define SYS_CFG_ENERGY 13
 240
 241 /* SYS_CFGCTRL site field values */
 242 #define SYS_CFG_SITE_MB 0
 243 #define SYS_CFG_SITE_DB1 1
 244 #define SYS_CFG_SITE_DB2 2
 245
 246 /**
 247  * vexpress_cfgctrl_read:
 248  * @s: arm_sysctl_state pointer
 249  * @dcc, @function, @site, @position, @device: split out values from
 250  * SYS_CFGCTRL register
 251  * @val: pointer to where to put the read data on success
 252  *
 253  * Handle a VExpress SYS_CFGCTRL register read. On success, return true and
 254  * write the read value to *val. On failure, return false (and val may
 255  * or may not be written to).
 256  */
 257 static bool vexpress_cfgctrl_read(arm_sysctl_state *s, unsigned int dcc,
 258                                   unsigned int function, unsigned int site,
 259                                   unsigned int position, unsigned int device,
 260                                   uint32_t *val)
 261 {
 262     /* We don't support anything other than DCC 0, board stack position 0
 263      * or sites other than motherboard/daughterboard:
 264      */
 265     if (dcc != 0 || position != 0 ||
 266         (site != SYS_CFG_SITE_MB && site != SYS_CFG_SITE_DB1)) {
 267         goto cfgctrl_unimp;
 268     }
 269
 270     switch (function) {
 271     case SYS_CFG_VOLT:
 272         if (site == SYS_CFG_SITE_DB1 && device < s->db_num_vsensors) {
 273             *val = s->db_voltage[device];
 274             return true;
 275         }
 276         if (site == SYS_CFG_SITE_MB && device == 0) {
 277             /* There is only one motherboard voltage sensor:
 278              * VIO : 3.3V : bus voltage between mother and daughterboard
 279              */
 280             *val = 3300000;
 281             return true;
 282         }
 283         break;
 284     case SYS_CFG_OSC:
 285         if (site == SYS_CFG_SITE_MB && device < ARRAY_SIZE(s->mb_clock)) {
 286             /* motherboard clock */
 287             *val = s->mb_clock[device];
 288             return true;
 289         }
 290         if (site == SYS_CFG_SITE_DB1 && device < s->db_num_clocks) {
 291             /* daughterboard clock */
 292             *val = s->db_clock[device];
 293             return true;
 294         }
 295         break;
 296     default:
 297         break;
 298     }
 299
 300 cfgctrl_unimp:
 301     qemu_log_mask(LOG_UNIMP,
 302                   "arm_sysctl: Unimplemented SYS_CFGCTRL read of function "
 303                   "0x%x DCC 0x%x site 0x%x position 0x%x device 0x%x\n",
 304                   function, dcc, site, position, device);
 305     return false;
 306 }
 307
 308 /**
 309  * vexpress_cfgctrl_write:
 310  * @s: arm_sysctl_state pointer
 311  * @dcc, @function, @site, @position, @device: split out values from
 312  * SYS_CFGCTRL register
 313  * @val: data to write
 314  *
 315  * Handle a VExpress SYS_CFGCTRL register write. On success, return true.
 316  * On failure, return false.
 317  */
 318 static bool vexpress_cfgctrl_write(arm_sysctl_state *s, unsigned int dcc,
 319                                    unsigned int function, unsigned int site,
 320                                    unsigned int position, unsigned int device,
 321                                    uint32_t val)
 322 {
 323     /* We don't support anything other than DCC 0, board stack position 0
 324      * or sites other than motherboard/daughterboard:
 325      */
 326     if (dcc != 0 || position != 0 ||
 327         (site != SYS_CFG_SITE_MB && site != SYS_CFG_SITE_DB1)) {
 328         goto cfgctrl_unimp;
 329     }
 330
 331     switch (function) {
 332     case SYS_CFG_OSC:
 333         if (site == SYS_CFG_SITE_MB && device < ARRAY_SIZE(s->mb_clock)) {
 334             /* motherboard clock */
 335             s->mb_clock[device] = val;
 336             return true;
 337         }
 338         if (site == SYS_CFG_SITE_DB1 && device < s->db_num_clocks) {
 339             /* daughterboard clock */
 340             s->db_clock[device] = val;
 341             return true;
 342         }
 343         break;
 344     case SYS_CFG_MUXFPGA:
 345         if (site == SYS_CFG_SITE_MB && device == 0) {
 346             /* Select whether video output comes from motherboard
 347              * or daughterboard: log and ignore as QEMU doesn't
 348              * support this.
 349              */
 350             qemu_log_mask(LOG_UNIMP, "arm_sysctl: selection of video output "
 351                           "not supported, ignoring\n");
 352             return true;
 353         }
 354         break;
 355     case SYS_CFG_SHUTDOWN:
 356         if (site == SYS_CFG_SITE_MB && device == 0) {
 357             qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
 358             return true;
 359         }
 360         break;
 361     case SYS_CFG_REBOOT:
 362         if (site == SYS_CFG_SITE_MB && device == 0) {
 363             qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
 364             return true;
 365         }
 366         break;
 367     case SYS_CFG_DVIMODE:
 368         if (site == SYS_CFG_SITE_MB && device == 0) {
 369             /* Selecting DVI mode is meaningless for QEMU: we will
 370              * always display the output correctly according to the
 371              * pixel height/width programmed into the CLCD controller.
 372              */
 373             return true;
 374         }
 375     default:
 376         break;
 377     }
 378
 379 cfgctrl_unimp:
 380     qemu_log_mask(LOG_UNIMP,
 381                   "arm_sysctl: Unimplemented SYS_CFGCTRL write of function "
 382                   "0x%x DCC 0x%x site 0x%x position 0x%x device 0x%x\n",
 383                   function, dcc, site, position, device);
 384     return false;
 385 }
 386
 387 static void arm_sysctl_write(void *opaque, hwaddr offset,
 388                              uint64_t val, unsigned size)
 389 {
 390     arm_sysctl_state *s = (arm_sysctl_state *)opaque;
 391
 392     switch (offset) {
 393     case 0x08: /* LED */
 394         s->leds = val;
 395         break;
 396     case 0x0c: /* OSC0 */
 397     case 0x10: /* OSC1 */
 398     case 0x14: /* OSC2 */
 399     case 0x18: /* OSC3 */
 400     case 0x1c: /* OSC4 */
 401         /* ??? */
 402         break;
 403     case 0x20: /* LOCK */
 404         if (val == LOCK_VALUE)
 405             s->lockval = val;
 406         else
 407             s->lockval = val & 0x7fff;
 408         break;
 409     case 0x28: /* CFGDATA1 */
 410         /* ??? Need to implement this.  */
 411         s->cfgdata1 = val;
 412         break;
 413     case 0x2c: /* CFGDATA2 */
 414         /* ??? Need to implement this.  */
 415         s->cfgdata2 = val;
 416         break;
 417     case 0x30: /* FLAGSSET */
 418         s->flags |= val;
 419         break;
 420     case 0x34: /* FLAGSCLR */
 421         s->flags &= ~val;
 422         break;
 423     case 0x38: /* NVFLAGSSET */
 424         s->nvflags |= val;
 425         break;
 426     case 0x3c: /* NVFLAGSCLR */
 427         s->nvflags &= ~val;
 428         break;
 429     case 0x40: /* RESETCTL */
 430         switch (board_id(s)) {
 431         case BOARD_ID_PB926:
 432             if (s->lockval == LOCK_VALUE) {
 433                 s->resetlevel = val;
 434                 if (val & 0x100) {
 435                     qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
 436                 }
 437             }
 438             break;
 439         case BOARD_ID_PBX:
 440         case BOARD_ID_PBA8:
 441             if (s->lockval == LOCK_VALUE) {
 442                 s->resetlevel = val;
 443                 if (val & 0x04) {
 444                     qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
 445                 }
 446             }
 447             break;
 448         case BOARD_ID_VEXPRESS:
 449         case BOARD_ID_EB:
 450         default:
 451             /* reserved: RAZ/WI */
 452             break;
 453         }
 454         break;
 455     case 0x44: /* PCICTL */
 456         /* nothing to do.  */
 457         break;
 458     case 0x4c: /* FLASH */
 459         break;
 460     case 0x50: /* CLCD */
 461         switch (board_id(s)) {
 462         case BOARD_ID_PB926:
 463             /* On 926 bits 13:8 are R/O, bits 1:0 control
 464              * the mux that defines how to interpret the PL110
 465              * graphics format, and other bits are r/w but we
 466              * don't implement them to do anything.
 467              */
 468             s->sys_clcd &= 0x3f00;
 469             s->sys_clcd |= val & ~0x3f00;
 470             qemu_set_irq(s->pl110_mux_ctrl, val & 3);
 471             break;
 472         case BOARD_ID_EB:
 473             /* The EB is the same except that there is no mux since
 474              * the EB has a PL111.
 475              */
 476             s->sys_clcd &= 0x3f00;
 477             s->sys_clcd |= val & ~0x3f00;
 478             break;
 479         case BOARD_ID_PBA8:
 480         case BOARD_ID_PBX:
 481             /* On PBA8 and PBX bit 7 is r/w and all other bits
 482              * are either r/o or RAZ/WI.
 483              */
 484             s->sys_clcd &= (1 << 7);
 485             s->sys_clcd |= val & ~(1 << 7);
 486             break;
 487         case BOARD_ID_VEXPRESS:
 488         default:
 489             /* On VExpress this register is unimplemented and will RAZ/WI */
 490             break;
 491         }
 492         break;
 493     case 0x54: /* CLCDSER */
 494     case 0x64: /* DMAPSR0 */
 495     case 0x68: /* DMAPSR1 */
 496     case 0x6c: /* DMAPSR2 */
 497     case 0x70: /* IOSEL */
 498     case 0x74: /* PLDCTL */
 499     case 0x80: /* BUSID */
 500     case 0x84: /* PROCID0 */
 501     case 0x88: /* PROCID1 */
 502     case 0x8c: /* OSCRESET0 */
 503     case 0x90: /* OSCRESET1 */
 504     case 0x94: /* OSCRESET2 */
 505     case 0x98: /* OSCRESET3 */
 506     case 0x9c: /* OSCRESET4 */
 507         break;
 508     case 0xa0: /* SYS_CFGDATA */
 509         if (board_id(s) != BOARD_ID_VEXPRESS) {
 510             goto bad_reg;
 511         }
 512         s->sys_cfgdata = val;
 513         return;
 514     case 0xa4: /* SYS_CFGCTRL */
 515         if (board_id(s) != BOARD_ID_VEXPRESS) {
 516             goto bad_reg;
 517         }
 518         /* Undefined bits [19:18] are RAZ/WI, and writing to
 519          * the start bit just triggers the action; it always reads
 520          * as zero.
 521          */
 522         s->sys_cfgctrl = val & ~((3 << 18) | (1 << 31));
 523         if (val & (1 << 31)) {
 524             /* Start bit set -- actually do something */
 525             unsigned int dcc = extract32(s->sys_cfgctrl, 26, 4);
 526             unsigned int function = extract32(s->sys_cfgctrl, 20, 6);
 527             unsigned int site = extract32(s->sys_cfgctrl, 16, 2);
 528             unsigned int position = extract32(s->sys_cfgctrl, 12, 4);
 529             unsigned int device = extract32(s->sys_cfgctrl, 0, 12);
 530             s->sys_cfgstat = 1;            /* complete */
 531             if (s->sys_cfgctrl & (1 << 30)) {
 532                 if (!vexpress_cfgctrl_write(s, dcc, function, site, position,
 533                                             device, s->sys_cfgdata)) {
 534                     s->sys_cfgstat |= 2;        /* error */
 535                 }
 536             } else {
 537                 uint32_t val;
 538                 if (!vexpress_cfgctrl_read(s, dcc, function, site, position,
 539                                            device, &val)) {
 540                     s->sys_cfgstat |= 2;        /* error */
 541                 } else {
 542                     s->sys_cfgdata = val;
 543                 }
 544             }
 545         }
 546         s->sys_cfgctrl &= ~(1 << 31);
 547         return;
 548     case 0xa8: /* SYS_CFGSTAT */
 549         if (board_id(s) != BOARD_ID_VEXPRESS) {
 550             goto bad_reg;
 551         }
 552         s->sys_cfgstat = val & 3;
 553         return;
 554     default:
 555     bad_reg:
 556         qemu_log_mask(LOG_GUEST_ERROR,
 557                       "arm_sysctl_write: Bad register offset 0x%x\n",
 558                       (int)offset);
 559         return;
 560     }
 561 }
 562
 563 static const MemoryRegionOps arm_sysctl_ops = {
 564     .read = arm_sysctl_read,
 565     .write = arm_sysctl_write,
 566     .endianness = DEVICE_NATIVE_ENDIAN,
 567 };
 568
 569 static void arm_sysctl_gpio_set(void *opaque, int line, int level)
 570 {
 571     arm_sysctl_state *s = (arm_sysctl_state *)opaque;
 572     switch (line) {
 573     case ARM_SYSCTL_GPIO_MMC_WPROT:
 574     {
 575         /* For PB926 and EB write-protect is bit 2 of SYS_MCI;
 576          * for all later boards it is bit 1.
 577          */
 578         int bit = 2;
 579         if ((board_id(s) == BOARD_ID_PB926) || (board_id(s) == BOARD_ID_EB)) {
 580             bit = 4;
 581         }
 582         s->sys_mci &= ~bit;
 583         if (level) {
 584             s->sys_mci |= bit;
 585         }
 586         break;
 587     }
 588     case ARM_SYSCTL_GPIO_MMC_CARDIN:
 589         s->sys_mci &= ~1;
 590         if (level) {
 591             s->sys_mci |= 1;
 592         }
 593         break;
 594     }
 595 }
 596
 597 static void arm_sysctl_init(Object *obj)
 598 {
 599     DeviceState *dev = DEVICE(obj);
 600     SysBusDevice *sd = SYS_BUS_DEVICE(obj);
 601     arm_sysctl_state *s = ARM_SYSCTL(obj);
 602
 603     memory_region_init_io(&s->iomem, OBJECT(dev), &arm_sysctl_ops, s,
 604                           "arm-sysctl", 0x1000);
 605     sysbus_init_mmio(sd, &s->iomem);
 606     qdev_init_gpio_in(dev, arm_sysctl_gpio_set, 2);
 607     qdev_init_gpio_out(dev, &s->pl110_mux_ctrl, 1);
 608 }
 609
 610 static void arm_sysctl_realize(DeviceState *d, Error **errp)
 611 {
 612     arm_sysctl_state *s = ARM_SYSCTL(d);
 613
 614     s->db_clock = g_new0(uint32_t, s->db_num_clocks);
 615 }
 616
 617 static void arm_sysctl_finalize(Object *obj)
 618 {
 619     arm_sysctl_state *s = ARM_SYSCTL(obj);
 620
 621     g_free(s->db_voltage);
 622     g_free(s->db_clock);
 623     g_free(s->db_clock_reset);
 624 }
 625
 626 static Property arm_sysctl_properties[] = {
 627     DEFINE_PROP_UINT32("sys_id", arm_sysctl_state, sys_id, 0),
 628     DEFINE_PROP_UINT32("proc_id", arm_sysctl_state, proc_id, 0),
 629     /* Daughterboard power supply voltages (as reported via SYS_CFG) */
 630     DEFINE_PROP_ARRAY("db-voltage", arm_sysctl_state, db_num_vsensors,
 631                       db_voltage, qdev_prop_uint32, uint32_t),
 632     /* Daughterboard clock reset values (as reported via SYS_CFG) */
 633     DEFINE_PROP_ARRAY("db-clock", arm_sysctl_state, db_num_clocks,
 634                       db_clock_reset, qdev_prop_uint32, uint32_t),
 635     DEFINE_PROP_END_OF_LIST(),
 636 };
 637
 638 static void arm_sysctl_class_init(ObjectClass *klass, void *data)
 639 {
 640     DeviceClass *dc = DEVICE_CLASS(klass);
 641
 642     dc->realize = arm_sysctl_realize;
 643     dc->reset = arm_sysctl_reset;
 644     dc->vmsd = &vmstate_arm_sysctl;
 645     device_class_set_props(dc, arm_sysctl_properties);
 646 }
 647
 648 static const TypeInfo arm_sysctl_info = {
 649     .name          = TYPE_ARM_SYSCTL,
 650     .parent        = TYPE_SYS_BUS_DEVICE,
 651     .instance_size = sizeof(arm_sysctl_state),
 652     .instance_init = arm_sysctl_init,
 653     .instance_finalize = arm_sysctl_finalize,
 654     .class_init    = arm_sysctl_class_init,
 655 };
 656
 657 static void arm_sysctl_register_types(void)
 658 {
 659     type_register_static(&arm_sysctl_info);
 660 }
 661
 662 type_init(arm_sysctl_register_types)