hw/ppc_prep.c

   1 /*
   2  * QEMU PPC PREP hardware System Emulator
   3  *
   4  * Copyright (c) 2003-2007 Jocelyn Mayer
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24 #include "hw.h"
  25 #include "nvram.h"
  26 #include "pc.h"
  27 #include "fdc.h"
  28 #include "net.h"
  29 #include "sysemu.h"
  30 #include "isa.h"
  31 #include "pci.h"
  32 #include "ppc.h"
  33 #include "boards.h"
  34 #include "qemu-log.h"
  35
  36 //#define HARD_DEBUG_PPC_IO
  37 //#define DEBUG_PPC_IO
  38
  39 /* SMP is not enabled, for now */
  40 #define MAX_CPUS 1
  41
  42 #define MAX_IDE_BUS 2
  43
  44 #define BIOS_FILENAME "ppc_rom.bin"
  45 #define KERNEL_LOAD_ADDR 0x01000000
  46 #define INITRD_LOAD_ADDR 0x01800000
  47
  48 #if defined (HARD_DEBUG_PPC_IO) && !defined (DEBUG_PPC_IO)
  49 #define DEBUG_PPC_IO
  50 #endif
  51
  52 #if defined (HARD_DEBUG_PPC_IO)
  53 #define PPC_IO_DPRINTF(fmt, args...)                     \
  54 do {                                                     \
  55     if (qemu_loglevel_mask(CPU_LOG_IOPORT)) {            \
  56         qemu_log("%s: " fmt, __func__ , ##args); \
  57     } else {                                             \
  58         printf("%s : " fmt, __func__ , ##args);          \
  59     }                                                    \
  60 } while (0)
  61 #elif defined (DEBUG_PPC_IO)
  62 #define PPC_IO_DPRINTF(fmt, args...) qemu_log_mask(CPU_LOG_IOPORT, ## __VA_ARGS__)
  63 #else
  64 #define PPC_IO_DPRINTF(fmt, args...) do { } while (0)
  65 #endif
  66
  67 /* Constants for devices init */
  68 static const int ide_iobase[2] = { 0x1f0, 0x170 };
  69 static const int ide_iobase2[2] = { 0x3f6, 0x376 };
  70 static const int ide_irq[2] = { 13, 13 };
  71
  72 #define NE2000_NB_MAX 6
  73
  74 static uint32_t ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 };
  75 static int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 };
  76
  77 //static PITState *pit;
  78
  79 /* ISA IO ports bridge */
  80 #define PPC_IO_BASE 0x80000000
  81
  82 #if 0
  83 /* Speaker port 0x61 */
  84 static int speaker_data_on;
  85 static int dummy_refresh_clock;
  86 #endif
  87
  88 static void speaker_ioport_write (void *opaque, uint32_t addr, uint32_t val)
  89 {
  90 #if 0
  91     speaker_data_on = (val >> 1) & 1;
  92     pit_set_gate(pit, 2, val & 1);
  93 #endif
  94 }
  95
  96 static uint32_t speaker_ioport_read (void *opaque, uint32_t addr)
  97 {
  98 #if 0
  99     int out;
 100     out = pit_get_out(pit, 2, qemu_get_clock(vm_clock));
 101     dummy_refresh_clock ^= 1;
 102     return (speaker_data_on << 1) | pit_get_gate(pit, 2) | (out << 5) |
 103         (dummy_refresh_clock << 4);
 104 #endif
 105     return 0;
 106 }
 107
 108 /* PCI intack register */
 109 /* Read-only register (?) */
 110 static void _PPC_intack_write (void *opaque,
 111                                target_phys_addr_t addr, uint32_t value)
 112 {
 113 //    printf("%s: 0x" PADDRX " => 0x%08" PRIx32 "\n", __func__, addr, value);
 114 }
 115
 116 static always_inline uint32_t _PPC_intack_read (target_phys_addr_t addr)
 117 {
 118     uint32_t retval = 0;
 119
 120     if ((addr & 0xf) == 0)
 121         retval = pic_intack_read(isa_pic);
 122 //   printf("%s: 0x" PADDRX " <= %08" PRIx32 "\n", __func__, addr, retval);
 123
 124     return retval;
 125 }
 126
 127 static uint32_t PPC_intack_readb (void *opaque, target_phys_addr_t addr)
 128 {
 129     return _PPC_intack_read(addr);
 130 }
 131
 132 static uint32_t PPC_intack_readw (void *opaque, target_phys_addr_t addr)
 133 {
 134 #ifdef TARGET_WORDS_BIGENDIAN
 135     return bswap16(_PPC_intack_read(addr));
 136 #else
 137     return _PPC_intack_read(addr);
 138 #endif
 139 }
 140
 141 static uint32_t PPC_intack_readl (void *opaque, target_phys_addr_t addr)
 142 {
 143 #ifdef TARGET_WORDS_BIGENDIAN
 144     return bswap32(_PPC_intack_read(addr));
 145 #else
 146     return _PPC_intack_read(addr);
 147 #endif
 148 }
 149
 150 static CPUWriteMemoryFunc *PPC_intack_write[] = {
 151     &_PPC_intack_write,
 152     &_PPC_intack_write,
 153     &_PPC_intack_write,
 154 };
 155
 156 static CPUReadMemoryFunc *PPC_intack_read[] = {
 157     &PPC_intack_readb,
 158     &PPC_intack_readw,
 159     &PPC_intack_readl,
 160 };
 161
 162 /* PowerPC control and status registers */
 163 #if 0 // Not used
 164 static struct {
 165     /* IDs */
 166     uint32_t veni_devi;
 167     uint32_t revi;
 168     /* Control and status */
 169     uint32_t gcsr;
 170     uint32_t xcfr;
 171     uint32_t ct32;
 172     uint32_t mcsr;
 173     /* General purpose registers */
 174     uint32_t gprg[6];
 175     /* Exceptions */
 176     uint32_t feen;
 177     uint32_t fest;
 178     uint32_t fema;
 179     uint32_t fecl;
 180     uint32_t eeen;
 181     uint32_t eest;
 182     uint32_t eecl;
 183     uint32_t eeint;
 184     uint32_t eemck0;
 185     uint32_t eemck1;
 186     /* Error diagnostic */
 187 } XCSR;
 188
 189 static void PPC_XCSR_writeb (void *opaque,
 190                              target_phys_addr_t addr, uint32_t value)
 191 {
 192     printf("%s: 0x" PADDRX " => 0x%08" PRIx32 "\n", __func__, addr, value);
 193 }
 194
 195 static void PPC_XCSR_writew (void *opaque,
 196                              target_phys_addr_t addr, uint32_t value)
 197 {
 198 #ifdef TARGET_WORDS_BIGENDIAN
 199     value = bswap16(value);
 200 #endif
 201     printf("%s: 0x" PADDRX " => 0x%08" PRIx32 "\n", __func__, addr, value);
 202 }
 203
 204 static void PPC_XCSR_writel (void *opaque,
 205                              target_phys_addr_t addr, uint32_t value)
 206 {
 207 #ifdef TARGET_WORDS_BIGENDIAN
 208     value = bswap32(value);
 209 #endif
 210     printf("%s: 0x" PADDRX " => 0x%08" PRIx32 "\n", __func__, addr, value);
 211 }
 212
 213 static uint32_t PPC_XCSR_readb (void *opaque, target_phys_addr_t addr)
 214 {
 215     uint32_t retval = 0;
 216
 217     printf("%s: 0x" PADDRX " <= %08" PRIx32 "\n", __func__, addr, retval);
 218
 219     return retval;
 220 }
 221
 222 static uint32_t PPC_XCSR_readw (void *opaque, target_phys_addr_t addr)
 223 {
 224     uint32_t retval = 0;
 225
 226     printf("%s: 0x" PADDRX " <= %08" PRIx32 "\n", __func__, addr, retval);
 227 #ifdef TARGET_WORDS_BIGENDIAN
 228     retval = bswap16(retval);
 229 #endif
 230
 231     return retval;
 232 }
 233
 234 static uint32_t PPC_XCSR_readl (void *opaque, target_phys_addr_t addr)
 235 {
 236     uint32_t retval = 0;
 237
 238     printf("%s: 0x" PADDRX " <= %08" PRIx32 "\n", __func__, addr, retval);
 239 #ifdef TARGET_WORDS_BIGENDIAN
 240     retval = bswap32(retval);
 241 #endif
 242
 243     return retval;
 244 }
 245
 246 static CPUWriteMemoryFunc *PPC_XCSR_write[] = {
 247     &PPC_XCSR_writeb,
 248     &PPC_XCSR_writew,
 249     &PPC_XCSR_writel,
 250 };
 251
 252 static CPUReadMemoryFunc *PPC_XCSR_read[] = {
 253     &PPC_XCSR_readb,
 254     &PPC_XCSR_readw,
 255     &PPC_XCSR_readl,
 256 };
 257 #endif
 258
 259 /* Fake super-io ports for PREP platform (Intel 82378ZB) */
 260 typedef struct sysctrl_t {
 261     qemu_irq reset_irq;
 262     m48t59_t *nvram;
 263     uint8_t state;
 264     uint8_t syscontrol;
 265     uint8_t fake_io[2];
 266     int contiguous_map;
 267     int endian;
 268 } sysctrl_t;
 269
 270 enum {
 271     STATE_HARDFILE = 0x01,
 272 };
 273
 274 static sysctrl_t *sysctrl;
 275
 276 static void PREP_io_write (void *opaque, uint32_t addr, uint32_t val)
 277 {
 278     sysctrl_t *sysctrl = opaque;
 279
 280     PPC_IO_DPRINTF("0x%08" PRIx32 " => 0x%02" PRIx32 "\n", addr - PPC_IO_BASE,
 281                    val);
 282     sysctrl->fake_io[addr - 0x0398] = val;
 283 }
 284
 285 static uint32_t PREP_io_read (void *opaque, uint32_t addr)
 286 {
 287     sysctrl_t *sysctrl = opaque;
 288
 289     PPC_IO_DPRINTF("0x%08" PRIx32 " <= 0x%02" PRIx32 "\n", addr - PPC_IO_BASE,
 290                    sysctrl->fake_io[addr - 0x0398]);
 291     return sysctrl->fake_io[addr - 0x0398];
 292 }
 293
 294 static void PREP_io_800_writeb (void *opaque, uint32_t addr, uint32_t val)
 295 {
 296     sysctrl_t *sysctrl = opaque;
 297
 298     PPC_IO_DPRINTF("0x%08" PRIx32 " => 0x%02" PRIx32 "\n",
 299                    addr - PPC_IO_BASE, val);
 300     switch (addr) {
 301     case 0x0092:
 302         /* Special port 92 */
 303         /* Check soft reset asked */
 304         if (val & 0x01) {
 305             qemu_irq_raise(sysctrl->reset_irq);
 306         } else {
 307             qemu_irq_lower(sysctrl->reset_irq);
 308         }
 309         /* Check LE mode */
 310         if (val & 0x02) {
 311             sysctrl->endian = 1;
 312         } else {
 313             sysctrl->endian = 0;
 314         }
 315         break;
 316     case 0x0800:
 317         /* Motorola CPU configuration register : read-only */
 318         break;
 319     case 0x0802:
 320         /* Motorola base module feature register : read-only */
 321         break;
 322     case 0x0803:
 323         /* Motorola base module status register : read-only */
 324         break;
 325     case 0x0808:
 326         /* Hardfile light register */
 327         if (val & 1)
 328             sysctrl->state |= STATE_HARDFILE;
 329         else
 330             sysctrl->state &= ~STATE_HARDFILE;
 331         break;
 332     case 0x0810:
 333         /* Password protect 1 register */
 334         if (sysctrl->nvram != NULL)
 335             m48t59_toggle_lock(sysctrl->nvram, 1);
 336         break;
 337     case 0x0812:
 338         /* Password protect 2 register */
 339         if (sysctrl->nvram != NULL)
 340             m48t59_toggle_lock(sysctrl->nvram, 2);
 341         break;
 342     case 0x0814:
 343         /* L2 invalidate register */
 344         //        tlb_flush(first_cpu, 1);
 345         break;
 346     case 0x081C:
 347         /* system control register */
 348         sysctrl->syscontrol = val & 0x0F;
 349         break;
 350     case 0x0850:
 351         /* I/O map type register */
 352         sysctrl->contiguous_map = val & 0x01;
 353         break;
 354     default:
 355         printf("ERROR: unaffected IO port write: %04" PRIx32
 356                " => %02" PRIx32"\n", addr, val);
 357         break;
 358     }
 359 }
 360
 361 static uint32_t PREP_io_800_readb (void *opaque, uint32_t addr)
 362 {
 363     sysctrl_t *sysctrl = opaque;
 364     uint32_t retval = 0xFF;
 365
 366     switch (addr) {
 367     case 0x0092:
 368         /* Special port 92 */
 369         retval = 0x00;
 370         break;
 371     case 0x0800:
 372         /* Motorola CPU configuration register */
 373         retval = 0xEF; /* MPC750 */
 374         break;
 375     case 0x0802:
 376         /* Motorola Base module feature register */
 377         retval = 0xAD; /* No ESCC, PMC slot neither ethernet */
 378         break;
 379     case 0x0803:
 380         /* Motorola base module status register */
 381         retval = 0xE0; /* Standard MPC750 */
 382         break;
 383     case 0x080C:
 384         /* Equipment present register:
 385          *  no L2 cache
 386          *  no upgrade processor
 387          *  no cards in PCI slots
 388          *  SCSI fuse is bad
 389          */
 390         retval = 0x3C;
 391         break;
 392     case 0x0810:
 393         /* Motorola base module extended feature register */
 394         retval = 0x39; /* No USB, CF and PCI bridge. NVRAM present */
 395         break;
 396     case 0x0814:
 397         /* L2 invalidate: don't care */
 398         break;
 399     case 0x0818:
 400         /* Keylock */
 401         retval = 0x00;
 402         break;
 403     case 0x081C:
 404         /* system control register
 405          * 7 - 6 / 1 - 0: L2 cache enable
 406          */
 407         retval = sysctrl->syscontrol;
 408         break;
 409     case 0x0823:
 410         /* */
 411         retval = 0x03; /* no L2 cache */
 412         break;
 413     case 0x0850:
 414         /* I/O map type register */
 415         retval = sysctrl->contiguous_map;
 416         break;
 417     default:
 418         printf("ERROR: unaffected IO port: %04" PRIx32 " read\n", addr);
 419         break;
 420     }
 421     PPC_IO_DPRINTF("0x%08" PRIx32 " <= 0x%02" PRIx32 "\n",
 422                    addr - PPC_IO_BASE, retval);
 423
 424     return retval;
 425 }
 426
 427 static always_inline target_phys_addr_t prep_IO_address (sysctrl_t *sysctrl,
 428                                                          target_phys_addr_t
 429                                                          addr)
 430 {
 431     if (sysctrl->contiguous_map == 0) {
 432         /* 64 KB contiguous space for IOs */
 433         addr &= 0xFFFF;
 434     } else {
 435         /* 8 MB non-contiguous space for IOs */
 436         addr = (addr & 0x1F) | ((addr & 0x007FFF000) >> 7);
 437     }
 438
 439     return addr;
 440 }
 441
 442 static void PPC_prep_io_writeb (void *opaque, target_phys_addr_t addr,
 443                                 uint32_t value)
 444 {
 445     sysctrl_t *sysctrl = opaque;
 446
 447     addr = prep_IO_address(sysctrl, addr);
 448     cpu_outb(NULL, addr, value);
 449 }
 450
 451 static uint32_t PPC_prep_io_readb (void *opaque, target_phys_addr_t addr)
 452 {
 453     sysctrl_t *sysctrl = opaque;
 454     uint32_t ret;
 455
 456     addr = prep_IO_address(sysctrl, addr);
 457     ret = cpu_inb(NULL, addr);
 458
 459     return ret;
 460 }
 461
 462 static void PPC_prep_io_writew (void *opaque, target_phys_addr_t addr,
 463                                 uint32_t value)
 464 {
 465     sysctrl_t *sysctrl = opaque;
 466
 467     addr = prep_IO_address(sysctrl, addr);
 468 #ifdef TARGET_WORDS_BIGENDIAN
 469     value = bswap16(value);
 470 #endif
 471     PPC_IO_DPRINTF("0x" PADDRX " => 0x%08" PRIx32 "\n", addr, value);
 472     cpu_outw(NULL, addr, value);
 473 }
 474
 475 static uint32_t PPC_prep_io_readw (void *opaque, target_phys_addr_t addr)
 476 {
 477     sysctrl_t *sysctrl = opaque;
 478     uint32_t ret;
 479
 480     addr = prep_IO_address(sysctrl, addr);
 481     ret = cpu_inw(NULL, addr);
 482 #ifdef TARGET_WORDS_BIGENDIAN
 483     ret = bswap16(ret);
 484 #endif
 485     PPC_IO_DPRINTF("0x" PADDRX " <= 0x%08" PRIx32 "\n", addr, ret);
 486
 487     return ret;
 488 }
 489
 490 static void PPC_prep_io_writel (void *opaque, target_phys_addr_t addr,
 491                                 uint32_t value)
 492 {
 493     sysctrl_t *sysctrl = opaque;
 494
 495     addr = prep_IO_address(sysctrl, addr);
 496 #ifdef TARGET_WORDS_BIGENDIAN
 497     value = bswap32(value);
 498 #endif
 499     PPC_IO_DPRINTF("0x" PADDRX " => 0x%08" PRIx32 "\n", addr, value);
 500     cpu_outl(NULL, addr, value);
 501 }
 502
 503 static uint32_t PPC_prep_io_readl (void *opaque, target_phys_addr_t addr)
 504 {
 505     sysctrl_t *sysctrl = opaque;
 506     uint32_t ret;
 507
 508     addr = prep_IO_address(sysctrl, addr);
 509     ret = cpu_inl(NULL, addr);
 510 #ifdef TARGET_WORDS_BIGENDIAN
 511     ret = bswap32(ret);
 512 #endif
 513     PPC_IO_DPRINTF("0x" PADDRX " <= 0x%08" PRIx32 "\n", addr, ret);
 514
 515     return ret;
 516 }
 517
 518 static CPUWriteMemoryFunc *PPC_prep_io_write[] = {
 519     &PPC_prep_io_writeb,
 520     &PPC_prep_io_writew,
 521     &PPC_prep_io_writel,
 522 };
 523
 524 static CPUReadMemoryFunc *PPC_prep_io_read[] = {
 525     &PPC_prep_io_readb,
 526     &PPC_prep_io_readw,
 527     &PPC_prep_io_readl,
 528 };
 529
 530 #define NVRAM_SIZE        0x2000
 531
 532 /* PowerPC PREP hardware initialisation */
 533 static void ppc_prep_init (ram_addr_t ram_size, int vga_ram_size,
 534                            const char *boot_device,
 535                            const char *kernel_filename,
 536                            const char *kernel_cmdline,
 537                            const char *initrd_filename,
 538                            const char *cpu_model)
 539 {
 540     CPUState *env = NULL, *envs[MAX_CPUS];
 541     char buf[1024];
 542     nvram_t nvram;
 543     m48t59_t *m48t59;
 544     int PPC_io_memory;
 545     int linux_boot, i, nb_nics1, bios_size;
 546     ram_addr_t ram_offset, vga_ram_offset, bios_offset;
 547     uint32_t kernel_base, kernel_size, initrd_base, initrd_size;
 548     PCIBus *pci_bus;
 549     qemu_irq *i8259;
 550     int ppc_boot_device;
 551     int index;
 552     BlockDriverState *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
 553     BlockDriverState *fd[MAX_FD];
 554
 555     sysctrl = qemu_mallocz(sizeof(sysctrl_t));
 556
 557     linux_boot = (kernel_filename != NULL);
 558
 559     /* init CPUs */
 560     if (cpu_model == NULL)
 561         cpu_model = "default";
 562     for (i = 0; i < smp_cpus; i++) {
 563         env = cpu_init(cpu_model);
 564         if (!env) {
 565             fprintf(stderr, "Unable to find PowerPC CPU definition\n");
 566             exit(1);
 567         }
 568         if (env->flags & POWERPC_FLAG_RTC_CLK) {
 569             /* POWER / PowerPC 601 RTC clock frequency is 7.8125 MHz */
 570             cpu_ppc_tb_init(env, 7812500UL);
 571         } else {
 572             /* Set time-base frequency to 100 Mhz */
 573             cpu_ppc_tb_init(env, 100UL * 1000UL * 1000UL);
 574         }
 575         qemu_register_reset(&cpu_ppc_reset, env);
 576         envs[i] = env;
 577     }
 578
 579     /* allocate RAM */
 580     ram_offset = qemu_ram_alloc(ram_size);
 581     cpu_register_physical_memory(0, ram_size, ram_offset);
 582
 583     /* allocate VGA RAM */
 584     vga_ram_offset = qemu_ram_alloc(vga_ram_size);
 585
 586     /* allocate and load BIOS */
 587     bios_offset = qemu_ram_alloc(BIOS_SIZE);
 588     if (bios_name == NULL)
 589         bios_name = BIOS_FILENAME;
 590     snprintf(buf, sizeof(buf), "%s/%s", bios_dir, bios_name);
 591     bios_size = load_image(buf, phys_ram_base + bios_offset);
 592     if (bios_size < 0 || bios_size > BIOS_SIZE) {
 593         cpu_abort(env, "qemu: could not load PPC PREP bios '%s'\n", buf);
 594         exit(1);
 595     }
 596     if (env->nip < 0xFFF80000 && bios_size < 0x00100000) {
 597         cpu_abort(env, "PowerPC 601 / 620 / 970 need a 1MB BIOS\n");
 598     }
 599     bios_size = (bios_size + 0xfff) & ~0xfff;
 600     cpu_register_physical_memory((uint32_t)(-bios_size),
 601                                  bios_size, bios_offset | IO_MEM_ROM);
 602
 603     if (linux_boot) {
 604         kernel_base = KERNEL_LOAD_ADDR;
 605         /* now we can load the kernel */
 606         kernel_size = load_image(kernel_filename, phys_ram_base + kernel_base);
 607         if (kernel_size < 0) {
 608             cpu_abort(env, "qemu: could not load kernel '%s'\n",
 609                       kernel_filename);
 610             exit(1);
 611         }
 612         /* load initrd */
 613         if (initrd_filename) {
 614             initrd_base = INITRD_LOAD_ADDR;
 615             initrd_size = load_image(initrd_filename,
 616                                      phys_ram_base + initrd_base);
 617             if (initrd_size < 0) {
 618                 cpu_abort(env, "qemu: could not load initial ram disk '%s'\n",
 619                           initrd_filename);
 620                 exit(1);
 621             }
 622         } else {
 623             initrd_base = 0;
 624             initrd_size = 0;
 625         }
 626         ppc_boot_device = 'm';
 627     } else {
 628         kernel_base = 0;
 629         kernel_size = 0;
 630         initrd_base = 0;
 631         initrd_size = 0;
 632         ppc_boot_device = '\0';
 633         /* For now, OHW cannot boot from the network. */
 634         for (i = 0; boot_device[i] != '\0'; i++) {
 635             if (boot_device[i] >= 'a' && boot_device[i] <= 'f') {
 636                 ppc_boot_device = boot_device[i];
 637                 break;
 638             }
 639         }
 640         if (ppc_boot_device == '\0') {
 641             fprintf(stderr, "No valid boot device for Mac99 machine\n");
 642             exit(1);
 643         }
 644     }
 645
 646     isa_mem_base = 0xc0000000;
 647     if (PPC_INPUT(env) != PPC_FLAGS_INPUT_6xx) {
 648         cpu_abort(env, "Only 6xx bus is supported on PREP machine\n");
 649         exit(1);
 650     }
 651     i8259 = i8259_init(first_cpu->irq_inputs[PPC6xx_INPUT_INT]);
 652     pci_bus = pci_prep_init(i8259);
 653     //    pci_bus = i440fx_init();
 654     /* Register 8 MB of ISA IO space (needed for non-contiguous map) */
 655     PPC_io_memory = cpu_register_io_memory(0, PPC_prep_io_read,
 656                                            PPC_prep_io_write, sysctrl);
 657     cpu_register_physical_memory(0x80000000, 0x00800000, PPC_io_memory);
 658
 659     /* init basic PC hardware */
 660     pci_vga_init(pci_bus, phys_ram_base + vga_ram_offset,
 661                  vga_ram_offset, vga_ram_size, 0, 0);
 662     //    openpic = openpic_init(0x00000000, 0xF0000000, 1);
 663     //    pit = pit_init(0x40, i8259[0]);
 664     rtc_init(0x70, i8259[8], 2000);
 665
 666     serial_init(0x3f8, i8259[4], 115200, serial_hds[0]);
 667     nb_nics1 = nb_nics;
 668     if (nb_nics1 > NE2000_NB_MAX)
 669         nb_nics1 = NE2000_NB_MAX;
 670     for(i = 0; i < nb_nics1; i++) {
 671         if (nd_table[i].model == NULL) {
 672             nd_table[i].model = "ne2k_isa";
 673         }
 674         if (strcmp(nd_table[i].model, "ne2k_isa") == 0) {
 675             isa_ne2000_init(ne2000_io[i], i8259[ne2000_irq[i]], &nd_table[i]);
 676         } else {
 677             pci_nic_init(pci_bus, &nd_table[i], -1, "ne2k_pci");
 678         }
 679     }
 680
 681     if (drive_get_max_bus(IF_IDE) >= MAX_IDE_BUS) {
 682         fprintf(stderr, "qemu: too many IDE bus\n");
 683         exit(1);
 684     }
 685
 686     for(i = 0; i < MAX_IDE_BUS * MAX_IDE_DEVS; i++) {
 687         index = drive_get_index(IF_IDE, i / MAX_IDE_DEVS, i % MAX_IDE_DEVS);
 688         if (index != -1)
 689             hd[i] = drives_table[index].bdrv;
 690         else
 691             hd[i] = NULL;
 692     }
 693
 694     for(i = 0; i < MAX_IDE_BUS; i++) {
 695         isa_ide_init(ide_iobase[i], ide_iobase2[i], i8259[ide_irq[i]],
 696                      hd[2 * i],
 697                      hd[2 * i + 1]);
 698     }
 699     i8042_init(i8259[1], i8259[12], 0x60);
 700     DMA_init(1);
 701     //    AUD_init();
 702     //    SB16_init();
 703
 704     for(i = 0; i < MAX_FD; i++) {
 705         index = drive_get_index(IF_FLOPPY, 0, i);
 706         if (index != -1)
 707             fd[i] = drives_table[index].bdrv;
 708         else
 709             fd[i] = NULL;
 710     }
 711     fdctrl_init(i8259[6], 2, 0, 0x3f0, fd);
 712
 713     /* Register speaker port */
 714     register_ioport_read(0x61, 1, 1, speaker_ioport_read, NULL);
 715     register_ioport_write(0x61, 1, 1, speaker_ioport_write, NULL);
 716     /* Register fake IO ports for PREP */
 717     sysctrl->reset_irq = first_cpu->irq_inputs[PPC6xx_INPUT_HRESET];
 718     register_ioport_read(0x398, 2, 1, &PREP_io_read, sysctrl);
 719     register_ioport_write(0x398, 2, 1, &PREP_io_write, sysctrl);
 720     /* System control ports */
 721     register_ioport_read(0x0092, 0x01, 1, &PREP_io_800_readb, sysctrl);
 722     register_ioport_write(0x0092, 0x01, 1, &PREP_io_800_writeb, sysctrl);
 723     register_ioport_read(0x0800, 0x52, 1, &PREP_io_800_readb, sysctrl);
 724     register_ioport_write(0x0800, 0x52, 1, &PREP_io_800_writeb, sysctrl);
 725     /* PCI intack location */
 726     PPC_io_memory = cpu_register_io_memory(0, PPC_intack_read,
 727                                            PPC_intack_write, NULL);
 728     cpu_register_physical_memory(0xBFFFFFF0, 0x4, PPC_io_memory);
 729     /* PowerPC control and status register group */
 730 #if 0
 731     PPC_io_memory = cpu_register_io_memory(0, PPC_XCSR_read, PPC_XCSR_write,
 732                                            NULL);
 733     cpu_register_physical_memory(0xFEFF0000, 0x1000, PPC_io_memory);
 734 #endif
 735
 736     if (usb_enabled) {
 737         usb_ohci_init_pci(pci_bus, 3, -1);
 738     }
 739
 740     m48t59 = m48t59_init(i8259[8], 0, 0x0074, NVRAM_SIZE, 59);
 741     if (m48t59 == NULL)
 742         return;
 743     sysctrl->nvram = m48t59;
 744
 745     /* Initialise NVRAM */
 746     nvram.opaque = m48t59;
 747     nvram.read_fn = &m48t59_read;
 748     nvram.write_fn = &m48t59_write;
 749     PPC_NVRAM_set_params(&nvram, NVRAM_SIZE, "PREP", ram_size, ppc_boot_device,
 750                          kernel_base, kernel_size,
 751                          kernel_cmdline,
 752                          initrd_base, initrd_size,
 753                          /* XXX: need an option to load a NVRAM image */
 754                          0,
 755                          graphic_width, graphic_height, graphic_depth);
 756
 757     /* Special port to get debug messages from Open-Firmware */
 758     register_ioport_write(0x0F00, 4, 1, &PPC_debug_write, NULL);
 759 }
 760
 761 QEMUMachine prep_machine = {
 762     .name = "prep",
 763     .desc = "PowerPC PREP platform",
 764     .init = ppc_prep_init,
 765     .ram_require = BIOS_SIZE + VGA_RAM_SIZE,
 766     .max_cpus = MAX_CPUS,
 767 };