hw/zynq_slcr.c

   1 /*
   2  * Status and system control registers for Xilinx Zynq Platform
   3  *
   4  * Copyright (c) 2011 Michal Simek <monstr@monstr.eu>
   5  * Copyright (c) 2012 PetaLogix Pty Ltd.
   6  * Based on hw/arm_sysctl.c, written by Paul Brook
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License
  10  * as published by the Free Software Foundation; either version
  11  * 2 of the License, or (at your option) any later version.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, see <http://www.gnu.org/licenses/>.
  15  */
  16
  17 #include "hw.h"
  18 #include "qemu/timer.h"
  19 #include "sysbus.h"
  20 #include "sysemu/sysemu.h"
  21
  22 #ifdef ZYNQ_ARM_SLCR_ERR_DEBUG
  23 #define DB_PRINT(...) do { \
  24     fprintf(stderr,  ": %s: ", __func__); \
  25     fprintf(stderr, ## __VA_ARGS__); \
  26     } while (0);
  27 #else
  28     #define DB_PRINT(...)
  29 #endif
  30
  31 #define XILINX_LOCK_KEY 0x767b
  32 #define XILINX_UNLOCK_KEY 0xdf0d
  33
  34 typedef enum {
  35   ARM_PLL_CTRL,
  36   DDR_PLL_CTRL,
  37   IO_PLL_CTRL,
  38   PLL_STATUS,
  39   ARM_PPL_CFG,
  40   DDR_PLL_CFG,
  41   IO_PLL_CFG,
  42   PLL_BG_CTRL,
  43   PLL_MAX
  44 } PLLValues;
  45
  46 typedef enum {
  47   ARM_CLK_CTRL,
  48   DDR_CLK_CTRL,
  49   DCI_CLK_CTRL,
  50   APER_CLK_CTRL,
  51   USB0_CLK_CTRL,
  52   USB1_CLK_CTRL,
  53   GEM0_RCLK_CTRL,
  54   GEM1_RCLK_CTRL,
  55   GEM0_CLK_CTRL,
  56   GEM1_CLK_CTRL,
  57   SMC_CLK_CTRL,
  58   LQSPI_CLK_CTRL,
  59   SDIO_CLK_CTRL,
  60   UART_CLK_CTRL,
  61   SPI_CLK_CTRL,
  62   CAN_CLK_CTRL,
  63   CAN_MIOCLK_CTRL,
  64   DBG_CLK_CTRL,
  65   PCAP_CLK_CTRL,
  66   TOPSW_CLK_CTRL,
  67   CLK_MAX
  68 } ClkValues;
  69
  70 typedef enum {
  71   CLK_CTRL,
  72   THR_CTRL,
  73   THR_CNT,
  74   THR_STA,
  75   FPGA_MAX
  76 } FPGAValues;
  77
  78 typedef enum {
  79   SYNC_CTRL,
  80   SYNC_STATUS,
  81   BANDGAP_TRIP,
  82   CC_TEST,
  83   PLL_PREDIVISOR,
  84   CLK_621_TRUE,
  85   PICTURE_DBG,
  86   PICTURE_DBG_UCNT,
  87   PICTURE_DBG_LCNT,
  88   MISC_MAX
  89 } MiscValues;
  90
  91 typedef enum {
  92   PSS,
  93   DDDR,
  94   DMAC = 3,
  95   USB,
  96   GEM,
  97   SDIO,
  98   SPI,
  99   CAN,
 100   I2C,
 101   UART,
 102   GPIO,
 103   LQSPI,
 104   SMC,
 105   OCM,
 106   DEVCI,
 107   FPGA,
 108   A9_CPU,
 109   RS_AWDT,
 110   RST_REASON,
 111   RST_REASON_CLR,
 112   REBOOT_STATUS,
 113   BOOT_MODE,
 114   RESET_MAX
 115 } ResetValues;
 116
 117 typedef struct {
 118     SysBusDevice busdev;
 119     MemoryRegion iomem;
 120
 121     union {
 122         struct {
 123             uint16_t scl;
 124             uint16_t lockval;
 125             uint32_t pll[PLL_MAX]; /* 0x100 - 0x11C */
 126             uint32_t clk[CLK_MAX]; /* 0x120 - 0x16C */
 127             uint32_t fpga[4][FPGA_MAX]; /* 0x170 - 0x1AC */
 128             uint32_t misc[MISC_MAX]; /* 0x1B0 - 0x1D8 */
 129             uint32_t reset[RESET_MAX]; /* 0x200 - 0x25C */
 130             uint32_t apu_ctrl; /* 0x300 */
 131             uint32_t wdt_clk_sel; /* 0x304 */
 132             uint32_t tz_ocm[3]; /* 0x400 - 0x408 */
 133             uint32_t tz_ddr; /* 0x430 */
 134             uint32_t tz_dma[3]; /* 0x440 - 0x448 */
 135             uint32_t tz_misc[3]; /* 0x450 - 0x458 */
 136             uint32_t tz_fpga[2]; /* 0x484 - 0x488 */
 137             uint32_t dbg_ctrl; /* 0x500 */
 138             uint32_t pss_idcode; /* 0x530 */
 139             uint32_t ddr[8]; /* 0x600 - 0x620 - 0x604-missing */
 140             uint32_t mio[54]; /* 0x700 - 0x7D4 */
 141             uint32_t mio_func[4]; /* 0x800 - 0x810 */
 142             uint32_t sd[2]; /* 0x830 - 0x834 */
 143             uint32_t lvl_shftr_en; /* 0x900 */
 144             uint32_t ocm_cfg; /* 0x910 */
 145             uint32_t cpu_ram[8]; /* 0xA00 - 0xA1C */
 146             uint32_t iou[7]; /* 0xA30 - 0xA48 */
 147             uint32_t dmac_ram; /* 0xA50 */
 148             uint32_t afi[4][3]; /* 0xA60 - 0xA8C */
 149             uint32_t ocm[3]; /* 0xA90 - 0xA98 */
 150             uint32_t devci_ram; /* 0xAA0 */
 151             uint32_t csg_ram; /* 0xAB0 */
 152             uint32_t gpiob[12]; /* 0xB00 - 0xB2C */
 153             uint32_t ddriob[14]; /* 0xB40 - 0xB74 */
 154         };
 155         uint8_t data[0x1000];
 156     };
 157 } ZynqSLCRState;
 158
 159 static void zynq_slcr_reset(DeviceState *d)
 160 {
 161     int i;
 162     ZynqSLCRState *s =
 163             FROM_SYSBUS(ZynqSLCRState, sysbus_from_qdev(d));
 164
 165     DB_PRINT("RESET\n");
 166
 167     s->lockval = 1;
 168     /* 0x100 - 0x11C */
 169     s->pll[ARM_PLL_CTRL] = 0x0001A008;
 170     s->pll[DDR_PLL_CTRL] = 0x0001A008;
 171     s->pll[IO_PLL_CTRL] = 0x0001A008;
 172     s->pll[PLL_STATUS] = 0x0000003F;
 173     s->pll[ARM_PPL_CFG] = 0x00014000;
 174     s->pll[DDR_PLL_CFG] = 0x00014000;
 175     s->pll[IO_PLL_CFG] = 0x00014000;
 176
 177     /* 0x120 - 0x16C */
 178     s->clk[ARM_CLK_CTRL] = 0x1F000400;
 179     s->clk[DDR_CLK_CTRL] = 0x18400003;
 180     s->clk[DCI_CLK_CTRL] = 0x01E03201;
 181     s->clk[APER_CLK_CTRL] = 0x01FFCCCD;
 182     s->clk[USB0_CLK_CTRL] = s->clk[USB1_CLK_CTRL] = 0x00101941;
 183     s->clk[GEM0_RCLK_CTRL] = s->clk[GEM1_RCLK_CTRL] = 0x00000001;
 184     s->clk[GEM0_CLK_CTRL] = s->clk[GEM1_CLK_CTRL] = 0x00003C01;
 185     s->clk[SMC_CLK_CTRL] = 0x00003C01;
 186     s->clk[LQSPI_CLK_CTRL] = 0x00002821;
 187     s->clk[SDIO_CLK_CTRL] = 0x00001E03;
 188     s->clk[UART_CLK_CTRL] = 0x00003F03;
 189     s->clk[SPI_CLK_CTRL] = 0x00003F03;
 190     s->clk[CAN_CLK_CTRL] = 0x00501903;
 191     s->clk[DBG_CLK_CTRL] = 0x00000F03;
 192     s->clk[PCAP_CLK_CTRL] = 0x00000F01;
 193
 194     /* 0x170 - 0x1AC */
 195     s->fpga[0][CLK_CTRL] = s->fpga[1][CLK_CTRL] = s->fpga[2][CLK_CTRL] =
 196             s->fpga[3][CLK_CTRL] = 0x00101800;
 197     s->fpga[0][THR_STA] = s->fpga[1][THR_STA] = s->fpga[2][THR_STA] =
 198             s->fpga[3][THR_STA] = 0x00010000;
 199
 200     /* 0x1B0 - 0x1D8 */
 201     s->misc[BANDGAP_TRIP] = 0x0000001F;
 202     s->misc[PLL_PREDIVISOR] = 0x00000001;
 203     s->misc[CLK_621_TRUE] = 0x00000001;
 204
 205     /* 0x200 - 0x25C */
 206     s->reset[FPGA] = 0x01F33F0F;
 207     s->reset[RST_REASON] = 0x00000040;
 208
 209     /* 0x700 - 0x7D4 */
 210     for (i = 0; i < 54; i++) {
 211         s->mio[i] = 0x00001601;
 212     }
 213     for (i = 2; i <= 8; i++) {
 214         s->mio[i] = 0x00000601;
 215     }
 216
 217     /* MIO_MST_TRI0, MIO_MST_TRI1 */
 218     s->mio_func[2] = s->mio_func[3] = 0xFFFFFFFF;
 219
 220     s->cpu_ram[0] = s->cpu_ram[1] = s->cpu_ram[3] =
 221             s->cpu_ram[4] = s->cpu_ram[7] = 0x00010101;
 222     s->cpu_ram[2] = s->cpu_ram[5] = 0x01010101;
 223     s->cpu_ram[6] = 0x00000001;
 224
 225     s->iou[0] = s->iou[1] = s->iou[2] = s->iou[3] = 0x09090909;
 226     s->iou[4] = s->iou[5] = 0x00090909;
 227     s->iou[6] = 0x00000909;
 228
 229     s->dmac_ram = 0x00000009;
 230
 231     s->afi[0][0] = s->afi[0][1] = 0x09090909;
 232     s->afi[1][0] = s->afi[1][1] = 0x09090909;
 233     s->afi[2][0] = s->afi[2][1] = 0x09090909;
 234     s->afi[3][0] = s->afi[3][1] = 0x09090909;
 235     s->afi[0][2] = s->afi[1][2] = s->afi[2][2] = s->afi[3][2] = 0x00000909;
 236
 237     s->ocm[0] = 0x01010101;
 238     s->ocm[1] = s->ocm[2] = 0x09090909;
 239
 240     s->devci_ram = 0x00000909;
 241     s->csg_ram = 0x00000001;
 242
 243     s->ddriob[0] = s->ddriob[1] = s->ddriob[2] = s->ddriob[3] = 0x00000e00;
 244     s->ddriob[4] = s->ddriob[5] = s->ddriob[6] = 0x00000e00;
 245     s->ddriob[12] = 0x00000021;
 246 }
 247
 248 static inline uint32_t zynq_slcr_read_imp(void *opaque,
 249     hwaddr offset)
 250 {
 251     ZynqSLCRState *s = (ZynqSLCRState *)opaque;
 252
 253     switch (offset) {
 254     case 0x0: /* SCL */
 255         return s->scl;
 256     case 0x4: /* LOCK */
 257     case 0x8: /* UNLOCK */
 258         DB_PRINT("Reading SCLR_LOCK/UNLOCK is not enabled\n");
 259         return 0;
 260     case 0x0C: /* LOCKSTA */
 261         return s->lockval;
 262     case 0x100 ... 0x11C:
 263         return s->pll[(offset - 0x100) / 4];
 264     case 0x120 ... 0x16C:
 265         return s->clk[(offset - 0x120) / 4];
 266     case 0x170 ... 0x1AC:
 267         return s->fpga[0][(offset - 0x170) / 4];
 268     case 0x1B0 ... 0x1D8:
 269         return s->misc[(offset - 0x1B0) / 4];
 270     case 0x200 ... 0x258:
 271         return s->reset[(offset - 0x200) / 4];
 272     case 0x25c:
 273         return 1;
 274     case 0x300:
 275         return s->apu_ctrl;
 276     case 0x304:
 277         return s->wdt_clk_sel;
 278     case 0x400 ... 0x408:
 279         return s->tz_ocm[(offset - 0x400) / 4];
 280     case 0x430:
 281         return s->tz_ddr;
 282     case 0x440 ... 0x448:
 283         return s->tz_dma[(offset - 0x440) / 4];
 284     case 0x450 ... 0x458:
 285         return s->tz_misc[(offset - 0x450) / 4];
 286     case 0x484 ... 0x488:
 287         return s->tz_fpga[(offset - 0x484) / 4];
 288     case 0x500:
 289         return s->dbg_ctrl;
 290     case 0x530:
 291         return s->pss_idcode;
 292     case 0x600 ... 0x620:
 293         if (offset == 0x604) {
 294             goto bad_reg;
 295         }
 296         return s->ddr[(offset - 0x600) / 4];
 297     case 0x700 ... 0x7D4:
 298         return s->mio[(offset - 0x700) / 4];
 299     case 0x800 ... 0x810:
 300         return s->mio_func[(offset - 0x800) / 4];
 301     case 0x830 ... 0x834:
 302         return s->sd[(offset - 0x830) / 4];
 303     case 0x900:
 304         return s->lvl_shftr_en;
 305     case 0x910:
 306         return s->ocm_cfg;
 307     case 0xA00 ... 0xA1C:
 308         return s->cpu_ram[(offset - 0xA00) / 4];
 309     case 0xA30 ... 0xA48:
 310         return s->iou[(offset - 0xA30) / 4];
 311     case 0xA50:
 312         return s->dmac_ram;
 313     case 0xA60 ... 0xA8C:
 314         return s->afi[0][(offset - 0xA60) / 4];
 315     case 0xA90 ... 0xA98:
 316         return s->ocm[(offset - 0xA90) / 4];
 317     case 0xAA0:
 318         return s->devci_ram;
 319     case 0xAB0:
 320         return s->csg_ram;
 321     case 0xB00 ... 0xB2C:
 322         return s->gpiob[(offset - 0xB00) / 4];
 323     case 0xB40 ... 0xB74:
 324         return s->ddriob[(offset - 0xB40) / 4];
 325     default:
 326     bad_reg:
 327         DB_PRINT("Bad register offset 0x%x\n", (int)offset);
 328         return 0;
 329     }
 330 }
 331
 332 static uint64_t zynq_slcr_read(void *opaque, hwaddr offset,
 333     unsigned size)
 334 {
 335     uint32_t ret = zynq_slcr_read_imp(opaque, offset);
 336
 337     DB_PRINT("addr: %08x data: %08x\n", (unsigned)offset, (unsigned)ret);
 338     return ret;
 339 }
 340
 341 static void zynq_slcr_write(void *opaque, hwaddr offset,
 342                           uint64_t val, unsigned size)
 343 {
 344     ZynqSLCRState *s = (ZynqSLCRState *)opaque;
 345
 346     DB_PRINT("offset: %08x data: %08x\n", (unsigned)offset, (unsigned)val);
 347
 348     switch (offset) {
 349     case 0x00: /* SCL */
 350         s->scl = val & 0x1;
 351     return;
 352     case 0x4: /* SLCR_LOCK */
 353         if ((val & 0xFFFF) == XILINX_LOCK_KEY) {
 354             DB_PRINT("XILINX LOCK 0xF8000000 + 0x%x <= 0x%x\n", (int)offset,
 355                 (unsigned)val & 0xFFFF);
 356             s->lockval = 1;
 357         } else {
 358             DB_PRINT("WRONG XILINX LOCK KEY 0xF8000000 + 0x%x <= 0x%x\n",
 359                 (int)offset, (unsigned)val & 0xFFFF);
 360         }
 361         return;
 362     case 0x8: /* SLCR_UNLOCK */
 363         if ((val & 0xFFFF) == XILINX_UNLOCK_KEY) {
 364             DB_PRINT("XILINX UNLOCK 0xF8000000 + 0x%x <= 0x%x\n", (int)offset,
 365                 (unsigned)val & 0xFFFF);
 366             s->lockval = 0;
 367         } else {
 368             DB_PRINT("WRONG XILINX UNLOCK KEY 0xF8000000 + 0x%x <= 0x%x\n",
 369                 (int)offset, (unsigned)val & 0xFFFF);
 370         }
 371         return;
 372     case 0xc: /* LOCKSTA */
 373         DB_PRINT("Writing SCLR_LOCKSTA is not enabled\n");
 374         return;
 375     }
 376
 377     if (!s->lockval) {
 378         switch (offset) {
 379         case 0x100 ... 0x11C:
 380             if (offset == 0x10C) {
 381                 goto bad_reg;
 382             }
 383             s->pll[(offset - 0x100) / 4] = val;
 384             break;
 385         case 0x120 ... 0x16C:
 386             s->clk[(offset - 0x120) / 4] = val;
 387             break;
 388         case 0x170 ... 0x1AC:
 389             s->fpga[0][(offset - 0x170) / 4] = val;
 390             break;
 391         case 0x1B0 ... 0x1D8:
 392             s->misc[(offset - 0x1B0) / 4] = val;
 393             break;
 394         case 0x200 ... 0x25C:
 395             if (offset == 0x250) {
 396                 goto bad_reg;
 397             }
 398             s->reset[(offset - 0x200) / 4] = val;
 399             break;
 400         case 0x300:
 401             s->apu_ctrl = val;
 402             break;
 403         case 0x304:
 404             s->wdt_clk_sel = val;
 405             break;
 406         case 0x400 ... 0x408:
 407             s->tz_ocm[(offset - 0x400) / 4] = val;
 408             break;
 409         case 0x430:
 410             s->tz_ddr = val;
 411             break;
 412         case 0x440 ... 0x448:
 413             s->tz_dma[(offset - 0x440) / 4] = val;
 414             break;
 415         case 0x450 ... 0x458:
 416             s->tz_misc[(offset - 0x450) / 4] = val;
 417             break;
 418         case 0x484 ... 0x488:
 419             s->tz_fpga[(offset - 0x484) / 4] = val;
 420             break;
 421         case 0x500:
 422             s->dbg_ctrl = val;
 423             break;
 424         case 0x530:
 425             s->pss_idcode = val;
 426             break;
 427         case 0x600 ... 0x620:
 428             if (offset == 0x604) {
 429                 goto bad_reg;
 430             }
 431             s->ddr[(offset - 0x600) / 4] = val;
 432             break;
 433         case 0x700 ... 0x7D4:
 434             s->mio[(offset - 0x700) / 4] = val;
 435             break;
 436         case 0x800 ... 0x810:
 437             s->mio_func[(offset - 0x800) / 4] = val;
 438             break;
 439         case 0x830 ... 0x834:
 440             s->sd[(offset - 0x830) / 4] = val;
 441             break;
 442         case 0x900:
 443             s->lvl_shftr_en = val;
 444             break;
 445         case 0x910:
 446             break;
 447         case 0xA00 ... 0xA1C:
 448             s->cpu_ram[(offset - 0xA00) / 4] = val;
 449             break;
 450         case 0xA30 ... 0xA48:
 451             s->iou[(offset - 0xA30) / 4] = val;
 452             break;
 453         case 0xA50:
 454             s->dmac_ram = val;
 455             break;
 456         case 0xA60 ... 0xA8C:
 457             s->afi[0][(offset - 0xA60) / 4] = val;
 458             break;
 459         case 0xA90:
 460             s->ocm[0] = val;
 461             break;
 462         case 0xAA0:
 463             s->devci_ram = val;
 464             break;
 465         case 0xAB0:
 466             s->csg_ram = val;
 467             break;
 468         case 0xB00 ... 0xB2C:
 469             if (offset == 0xB20 || offset == 0xB2C) {
 470                 goto bad_reg;
 471             }
 472             s->gpiob[(offset - 0xB00) / 4] = val;
 473             break;
 474         case 0xB40 ... 0xB74:
 475             s->ddriob[(offset - 0xB40) / 4] = val;
 476             break;
 477         default:
 478         bad_reg:
 479             DB_PRINT("Bad register write %x <= %08x\n", (int)offset,
 480                      (unsigned)val);
 481         }
 482     } else {
 483         DB_PRINT("SCLR registers are locked. Unlock them first\n");
 484     }
 485 }
 486
 487 static const MemoryRegionOps slcr_ops = {
 488     .read = zynq_slcr_read,
 489     .write = zynq_slcr_write,
 490     .endianness = DEVICE_NATIVE_ENDIAN,
 491 };
 492
 493 static int zynq_slcr_init(SysBusDevice *dev)
 494 {
 495     ZynqSLCRState *s = FROM_SYSBUS(ZynqSLCRState, dev);
 496
 497     memory_region_init_io(&s->iomem, &slcr_ops, s, "slcr", 0x1000);
 498     sysbus_init_mmio(dev, &s->iomem);
 499
 500     return 0;
 501 }
 502
 503 static const VMStateDescription vmstate_zynq_slcr = {
 504     .name = "zynq_slcr",
 505     .version_id = 1,
 506     .minimum_version_id = 1,
 507     .minimum_version_id_old = 1,
 508     .fields      = (VMStateField[]) {
 509         VMSTATE_UINT8_ARRAY(data, ZynqSLCRState, 0x1000),
 510         VMSTATE_END_OF_LIST()
 511     }
 512 };
 513
 514 static void zynq_slcr_class_init(ObjectClass *klass, void *data)
 515 {
 516     DeviceClass *dc = DEVICE_CLASS(klass);
 517     SysBusDeviceClass *sdc = SYS_BUS_DEVICE_CLASS(klass);
 518
 519     sdc->init = zynq_slcr_init;
 520     dc->vmsd = &vmstate_zynq_slcr;
 521     dc->reset = zynq_slcr_reset;
 522 }
 523
 524 static TypeInfo zynq_slcr_info = {
 525     .class_init = zynq_slcr_class_init,
 526     .name  = "xilinx,zynq_slcr",
 527     .parent = TYPE_SYS_BUS_DEVICE,
 528     .instance_size  = sizeof(ZynqSLCRState),
 529 };
 530
 531 static void zynq_slcr_register_types(void)
 532 {
 533     type_register_static(&zynq_slcr_info);
 534 }
 535
 536 type_init(zynq_slcr_register_types)