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 "prep_pci.h"
  33 #include "usb-ohci.h"
  34 #include "ppc.h"
  35 #include "boards.h"
  36 #include "qemu-log.h"
  37 #include "ide.h"
  38 #include "loader.h"
  39
  40 //#define HARD_DEBUG_PPC_IO
  41 //#define DEBUG_PPC_IO
  42
  43 /* SMP is not enabled, for now */
  44 #define MAX_CPUS 1
  45
  46 #define MAX_IDE_BUS 2
  47
  48 #define BIOS_SIZE (1024 * 1024)
  49 #define BIOS_FILENAME "ppc_rom.bin"
  50 #define KERNEL_LOAD_ADDR 0x01000000
  51 #define INITRD_LOAD_ADDR 0x01800000
  52
  53 #if defined (HARD_DEBUG_PPC_IO) && !defined (DEBUG_PPC_IO)
  54 #define DEBUG_PPC_IO
  55 #endif
  56
  57 #if defined (HARD_DEBUG_PPC_IO)
  58 #define PPC_IO_DPRINTF(fmt, ...)                         \
  59 do {                                                     \
  60     if (qemu_loglevel_mask(CPU_LOG_IOPORT)) {            \
  61         qemu_log("%s: " fmt, __func__ , ## __VA_ARGS__); \
  62     } else {                                             \
  63         printf("%s : " fmt, __func__ , ## __VA_ARGS__);  \
  64     }                                                    \
  65 } while (0)
  66 #elif defined (DEBUG_PPC_IO)
  67 #define PPC_IO_DPRINTF(fmt, ...) \
  68 qemu_log_mask(CPU_LOG_IOPORT, fmt, ## __VA_ARGS__)
  69 #else
  70 #define PPC_IO_DPRINTF(fmt, ...) do { } while (0)
  71 #endif
  72
  73 /* Constants for devices init */
  74 static const int ide_iobase[2] = { 0x1f0, 0x170 };
  75 static const int ide_iobase2[2] = { 0x3f6, 0x376 };
  76 static const int ide_irq[2] = { 13, 13 };
  77
  78 #define NE2000_NB_MAX 6
  79
  80 static uint32_t ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 };
  81 static int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 };
  82
  83 //static PITState *pit;
  84
  85 /* ISA IO ports bridge */
  86 #define PPC_IO_BASE 0x80000000
  87
  88 #if 0
  89 /* Speaker port 0x61 */
  90 static int speaker_data_on;
  91 static int dummy_refresh_clock;
  92 #endif
  93
  94 static void speaker_ioport_write (void *opaque, uint32_t addr, uint32_t val)
  95 {
  96 #if 0
  97     speaker_data_on = (val >> 1) & 1;
  98     pit_set_gate(pit, 2, val & 1);
  99 #endif
 100 }
 101
 102 static uint32_t speaker_ioport_read (void *opaque, uint32_t addr)
 103 {
 104 #if 0
 105     int out;
 106     out = pit_get_out(pit, 2, qemu_get_clock(vm_clock));
 107     dummy_refresh_clock ^= 1;
 108     return (speaker_data_on << 1) | pit_get_gate(pit, 2) | (out << 5) |
 109         (dummy_refresh_clock << 4);
 110 #endif
 111     return 0;
 112 }
 113
 114 /* PCI intack register */
 115 /* Read-only register (?) */
 116 static void _PPC_intack_write (void *opaque,
 117                                target_phys_addr_t addr, uint32_t value)
 118 {
 119 #if 0
 120     printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr,
 121            value);
 122 #endif
 123 }
 124
 125 static inline uint32_t _PPC_intack_read(target_phys_addr_t addr)
 126 {
 127     uint32_t retval = 0;
 128
 129     if ((addr & 0xf) == 0)
 130         retval = pic_intack_read(isa_pic);
 131 #if 0
 132     printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr,
 133            retval);
 134 #endif
 135
 136     return retval;
 137 }
 138
 139 static uint32_t PPC_intack_readb (void *opaque, target_phys_addr_t addr)
 140 {
 141     return _PPC_intack_read(addr);
 142 }
 143
 144 static uint32_t PPC_intack_readw (void *opaque, target_phys_addr_t addr)
 145 {
 146 #ifdef TARGET_WORDS_BIGENDIAN
 147     return bswap16(_PPC_intack_read(addr));
 148 #else
 149     return _PPC_intack_read(addr);
 150 #endif
 151 }
 152
 153 static uint32_t PPC_intack_readl (void *opaque, target_phys_addr_t addr)
 154 {
 155 #ifdef TARGET_WORDS_BIGENDIAN
 156     return bswap32(_PPC_intack_read(addr));
 157 #else
 158     return _PPC_intack_read(addr);
 159 #endif
 160 }
 161
 162 static CPUWriteMemoryFunc * const PPC_intack_write[] = {
 163     &_PPC_intack_write,
 164     &_PPC_intack_write,
 165     &_PPC_intack_write,
 166 };
 167
 168 static CPUReadMemoryFunc * const PPC_intack_read[] = {
 169     &PPC_intack_readb,
 170     &PPC_intack_readw,
 171     &PPC_intack_readl,
 172 };
 173
 174 /* PowerPC control and status registers */
 175 #if 0 // Not used
 176 static struct {
 177     /* IDs */
 178     uint32_t veni_devi;
 179     uint32_t revi;
 180     /* Control and status */
 181     uint32_t gcsr;
 182     uint32_t xcfr;
 183     uint32_t ct32;
 184     uint32_t mcsr;
 185     /* General purpose registers */
 186     uint32_t gprg[6];
 187     /* Exceptions */
 188     uint32_t feen;
 189     uint32_t fest;
 190     uint32_t fema;
 191     uint32_t fecl;
 192     uint32_t eeen;
 193     uint32_t eest;
 194     uint32_t eecl;
 195     uint32_t eeint;
 196     uint32_t eemck0;
 197     uint32_t eemck1;
 198     /* Error diagnostic */
 199 } XCSR;
 200
 201 static void PPC_XCSR_writeb (void *opaque,
 202                              target_phys_addr_t addr, uint32_t value)
 203 {
 204     printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr,
 205            value);
 206 }
 207
 208 static void PPC_XCSR_writew (void *opaque,
 209                              target_phys_addr_t addr, uint32_t value)
 210 {
 211 #ifdef TARGET_WORDS_BIGENDIAN
 212     value = bswap16(value);
 213 #endif
 214     printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr,
 215            value);
 216 }
 217
 218 static void PPC_XCSR_writel (void *opaque,
 219                              target_phys_addr_t addr, uint32_t value)
 220 {
 221 #ifdef TARGET_WORDS_BIGENDIAN
 222     value = bswap32(value);
 223 #endif
 224     printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr,
 225            value);
 226 }
 227
 228 static uint32_t PPC_XCSR_readb (void *opaque, target_phys_addr_t addr)
 229 {
 230     uint32_t retval = 0;
 231
 232     printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr,
 233            retval);
 234
 235     return retval;
 236 }
 237
 238 static uint32_t PPC_XCSR_readw (void *opaque, target_phys_addr_t addr)
 239 {
 240     uint32_t retval = 0;
 241
 242     printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr,
 243            retval);
 244 #ifdef TARGET_WORDS_BIGENDIAN
 245     retval = bswap16(retval);
 246 #endif
 247
 248     return retval;
 249 }
 250
 251 static uint32_t PPC_XCSR_readl (void *opaque, target_phys_addr_t addr)
 252 {
 253     uint32_t retval = 0;
 254
 255     printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr,
 256            retval);
 257 #ifdef TARGET_WORDS_BIGENDIAN
 258     retval = bswap32(retval);
 259 #endif
 260
 261     return retval;
 262 }
 263
 264 static CPUWriteMemoryFunc * const PPC_XCSR_write[] = {
 265     &PPC_XCSR_writeb,
 266     &PPC_XCSR_writew,
 267     &PPC_XCSR_writel,
 268 };
 269
 270 static CPUReadMemoryFunc * const PPC_XCSR_read[] = {
 271     &PPC_XCSR_readb,
 272     &PPC_XCSR_readw,
 273     &PPC_XCSR_readl,
 274 };
 275 #endif
 276
 277 /* Fake super-io ports for PREP platform (Intel 82378ZB) */
 278 typedef struct sysctrl_t {
 279     qemu_irq reset_irq;
 280     M48t59State *nvram;
 281     uint8_t state;
 282     uint8_t syscontrol;
 283     uint8_t fake_io[2];
 284     int contiguous_map;
 285     int endian;
 286 } sysctrl_t;
 287
 288 enum {
 289     STATE_HARDFILE = 0x01,
 290 };
 291
 292 static sysctrl_t *sysctrl;
 293
 294 static void PREP_io_write (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", addr - PPC_IO_BASE,
 299                    val);
 300     sysctrl->fake_io[addr - 0x0398] = val;
 301 }
 302
 303 static uint32_t PREP_io_read (void *opaque, uint32_t addr)
 304 {
 305     sysctrl_t *sysctrl = opaque;
 306
 307     PPC_IO_DPRINTF("0x%08" PRIx32 " <= 0x%02" PRIx32 "\n", addr - PPC_IO_BASE,
 308                    sysctrl->fake_io[addr - 0x0398]);
 309     return sysctrl->fake_io[addr - 0x0398];
 310 }
 311
 312 static void PREP_io_800_writeb (void *opaque, uint32_t addr, uint32_t val)
 313 {
 314     sysctrl_t *sysctrl = opaque;
 315
 316     PPC_IO_DPRINTF("0x%08" PRIx32 " => 0x%02" PRIx32 "\n",
 317                    addr - PPC_IO_BASE, val);
 318     switch (addr) {
 319     case 0x0092:
 320         /* Special port 92 */
 321         /* Check soft reset asked */
 322         if (val & 0x01) {
 323             qemu_irq_raise(sysctrl->reset_irq);
 324         } else {
 325             qemu_irq_lower(sysctrl->reset_irq);
 326         }
 327         /* Check LE mode */
 328         if (val & 0x02) {
 329             sysctrl->endian = 1;
 330         } else {
 331             sysctrl->endian = 0;
 332         }
 333         break;
 334     case 0x0800:
 335         /* Motorola CPU configuration register : read-only */
 336         break;
 337     case 0x0802:
 338         /* Motorola base module feature register : read-only */
 339         break;
 340     case 0x0803:
 341         /* Motorola base module status register : read-only */
 342         break;
 343     case 0x0808:
 344         /* Hardfile light register */
 345         if (val & 1)
 346             sysctrl->state |= STATE_HARDFILE;
 347         else
 348             sysctrl->state &= ~STATE_HARDFILE;
 349         break;
 350     case 0x0810:
 351         /* Password protect 1 register */
 352         if (sysctrl->nvram != NULL)
 353             m48t59_toggle_lock(sysctrl->nvram, 1);
 354         break;
 355     case 0x0812:
 356         /* Password protect 2 register */
 357         if (sysctrl->nvram != NULL)
 358             m48t59_toggle_lock(sysctrl->nvram, 2);
 359         break;
 360     case 0x0814:
 361         /* L2 invalidate register */
 362         //        tlb_flush(first_cpu, 1);
 363         break;
 364     case 0x081C:
 365         /* system control register */
 366         sysctrl->syscontrol = val & 0x0F;
 367         break;
 368     case 0x0850:
 369         /* I/O map type register */
 370         sysctrl->contiguous_map = val & 0x01;
 371         break;
 372     default:
 373         printf("ERROR: unaffected IO port write: %04" PRIx32
 374                " => %02" PRIx32"\n", addr, val);
 375         break;
 376     }
 377 }
 378
 379 static uint32_t PREP_io_800_readb (void *opaque, uint32_t addr)
 380 {
 381     sysctrl_t *sysctrl = opaque;
 382     uint32_t retval = 0xFF;
 383
 384     switch (addr) {
 385     case 0x0092:
 386         /* Special port 92 */
 387         retval = 0x00;
 388         break;
 389     case 0x0800:
 390         /* Motorola CPU configuration register */
 391         retval = 0xEF; /* MPC750 */
 392         break;
 393     case 0x0802:
 394         /* Motorola Base module feature register */
 395         retval = 0xAD; /* No ESCC, PMC slot neither ethernet */
 396         break;
 397     case 0x0803:
 398         /* Motorola base module status register */
 399         retval = 0xE0; /* Standard MPC750 */
 400         break;
 401     case 0x080C:
 402         /* Equipment present register:
 403          *  no L2 cache
 404          *  no upgrade processor
 405          *  no cards in PCI slots
 406          *  SCSI fuse is bad
 407          */
 408         retval = 0x3C;
 409         break;
 410     case 0x0810:
 411         /* Motorola base module extended feature register */
 412         retval = 0x39; /* No USB, CF and PCI bridge. NVRAM present */
 413         break;
 414     case 0x0814:
 415         /* L2 invalidate: don't care */
 416         break;
 417     case 0x0818:
 418         /* Keylock */
 419         retval = 0x00;
 420         break;
 421     case 0x081C:
 422         /* system control register
 423          * 7 - 6 / 1 - 0: L2 cache enable
 424          */
 425         retval = sysctrl->syscontrol;
 426         break;
 427     case 0x0823:
 428         /* */
 429         retval = 0x03; /* no L2 cache */
 430         break;
 431     case 0x0850:
 432         /* I/O map type register */
 433         retval = sysctrl->contiguous_map;
 434         break;
 435     default:
 436         printf("ERROR: unaffected IO port: %04" PRIx32 " read\n", addr);
 437         break;
 438     }
 439     PPC_IO_DPRINTF("0x%08" PRIx32 " <= 0x%02" PRIx32 "\n",
 440                    addr - PPC_IO_BASE, retval);
 441
 442     return retval;
 443 }
 444
 445 static inline target_phys_addr_t prep_IO_address(sysctrl_t *sysctrl,
 446                                                  target_phys_addr_t addr)
 447 {
 448     if (sysctrl->contiguous_map == 0) {
 449         /* 64 KB contiguous space for IOs */
 450         addr &= 0xFFFF;
 451     } else {
 452         /* 8 MB non-contiguous space for IOs */
 453         addr = (addr & 0x1F) | ((addr & 0x007FFF000) >> 7);
 454     }
 455
 456     return addr;
 457 }
 458
 459 static void PPC_prep_io_writeb (void *opaque, target_phys_addr_t addr,
 460                                 uint32_t value)
 461 {
 462     sysctrl_t *sysctrl = opaque;
 463
 464     addr = prep_IO_address(sysctrl, addr);
 465     cpu_outb(addr, value);
 466 }
 467
 468 static uint32_t PPC_prep_io_readb (void *opaque, target_phys_addr_t addr)
 469 {
 470     sysctrl_t *sysctrl = opaque;
 471     uint32_t ret;
 472
 473     addr = prep_IO_address(sysctrl, addr);
 474     ret = cpu_inb(addr);
 475
 476     return ret;
 477 }
 478
 479 static void PPC_prep_io_writew (void *opaque, target_phys_addr_t addr,
 480                                 uint32_t value)
 481 {
 482     sysctrl_t *sysctrl = opaque;
 483
 484     addr = prep_IO_address(sysctrl, addr);
 485 #ifdef TARGET_WORDS_BIGENDIAN
 486     value = bswap16(value);
 487 #endif
 488     PPC_IO_DPRINTF("0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", addr, value);
 489     cpu_outw(addr, value);
 490 }
 491
 492 static uint32_t PPC_prep_io_readw (void *opaque, target_phys_addr_t addr)
 493 {
 494     sysctrl_t *sysctrl = opaque;
 495     uint32_t ret;
 496
 497     addr = prep_IO_address(sysctrl, addr);
 498     ret = cpu_inw(addr);
 499 #ifdef TARGET_WORDS_BIGENDIAN
 500     ret = bswap16(ret);
 501 #endif
 502     PPC_IO_DPRINTF("0x" TARGET_FMT_plx " <= 0x%08" PRIx32 "\n", addr, ret);
 503
 504     return ret;
 505 }
 506
 507 static void PPC_prep_io_writel (void *opaque, target_phys_addr_t addr,
 508                                 uint32_t value)
 509 {
 510     sysctrl_t *sysctrl = opaque;
 511
 512     addr = prep_IO_address(sysctrl, addr);
 513 #ifdef TARGET_WORDS_BIGENDIAN
 514     value = bswap32(value);
 515 #endif
 516     PPC_IO_DPRINTF("0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", addr, value);
 517     cpu_outl(addr, value);
 518 }
 519
 520 static uint32_t PPC_prep_io_readl (void *opaque, target_phys_addr_t addr)
 521 {
 522     sysctrl_t *sysctrl = opaque;
 523     uint32_t ret;
 524
 525     addr = prep_IO_address(sysctrl, addr);
 526     ret = cpu_inl(addr);
 527 #ifdef TARGET_WORDS_BIGENDIAN
 528     ret = bswap32(ret);
 529 #endif
 530     PPC_IO_DPRINTF("0x" TARGET_FMT_plx " <= 0x%08" PRIx32 "\n", addr, ret);
 531
 532     return ret;
 533 }
 534
 535 static CPUWriteMemoryFunc * const PPC_prep_io_write[] = {
 536     &PPC_prep_io_writeb,
 537     &PPC_prep_io_writew,
 538     &PPC_prep_io_writel,
 539 };
 540
 541 static CPUReadMemoryFunc * const PPC_prep_io_read[] = {
 542     &PPC_prep_io_readb,
 543     &PPC_prep_io_readw,
 544     &PPC_prep_io_readl,
 545 };
 546
 547 #define NVRAM_SIZE        0x2000
 548
 549 /* PowerPC PREP hardware initialisation */
 550 static void ppc_prep_init (ram_addr_t ram_size,
 551                            const char *boot_device,
 552                            const char *kernel_filename,
 553                            const char *kernel_cmdline,
 554                            const char *initrd_filename,
 555                            const char *cpu_model)
 556 {
 557     CPUState *env = NULL, *envs[MAX_CPUS];
 558     char *filename;
 559     nvram_t nvram;
 560     M48t59State *m48t59;
 561     int PPC_io_memory;
 562     int linux_boot, i, nb_nics1, bios_size;
 563     ram_addr_t ram_offset, bios_offset;
 564     uint32_t kernel_base, kernel_size, initrd_base, initrd_size;
 565     PCIBus *pci_bus;
 566     qemu_irq *i8259;
 567     int ppc_boot_device;
 568     DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
 569     DriveInfo *fd[MAX_FD];
 570
 571     sysctrl = qemu_mallocz(sizeof(sysctrl_t));
 572
 573     linux_boot = (kernel_filename != NULL);
 574
 575     /* init CPUs */
 576     if (cpu_model == NULL)
 577         cpu_model = "602";
 578     for (i = 0; i < smp_cpus; i++) {
 579         env = cpu_init(cpu_model);
 580         if (!env) {
 581             fprintf(stderr, "Unable to find PowerPC CPU definition\n");
 582             exit(1);
 583         }
 584         if (env->flags & POWERPC_FLAG_RTC_CLK) {
 585             /* POWER / PowerPC 601 RTC clock frequency is 7.8125 MHz */
 586             cpu_ppc_tb_init(env, 7812500UL);
 587         } else {
 588             /* Set time-base frequency to 100 Mhz */
 589             cpu_ppc_tb_init(env, 100UL * 1000UL * 1000UL);
 590         }
 591         qemu_register_reset((QEMUResetHandler*)&cpu_reset, env);
 592         envs[i] = env;
 593     }
 594
 595     /* allocate RAM */
 596     ram_offset = qemu_ram_alloc(ram_size);
 597     cpu_register_physical_memory(0, ram_size, ram_offset);
 598
 599     /* allocate and load BIOS */
 600     bios_offset = qemu_ram_alloc(BIOS_SIZE);
 601     if (bios_name == NULL)
 602         bios_name = BIOS_FILENAME;
 603     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
 604     if (filename) {
 605         bios_size = get_image_size(filename);
 606     } else {
 607         bios_size = -1;
 608     }
 609     if (bios_size > 0 && bios_size <= BIOS_SIZE) {
 610         target_phys_addr_t bios_addr;
 611         bios_size = (bios_size + 0xfff) & ~0xfff;
 612         bios_addr = (uint32_t)(-bios_size);
 613         cpu_register_physical_memory(bios_addr, bios_size,
 614                                      bios_offset | IO_MEM_ROM);
 615         bios_size = load_image_targphys(filename, bios_addr, bios_size);
 616     }
 617     if (bios_size < 0 || bios_size > BIOS_SIZE) {
 618         hw_error("qemu: could not load PPC PREP bios '%s'\n", bios_name);
 619     }
 620     if (filename) {
 621         qemu_free(filename);
 622     }
 623     if (env->nip < 0xFFF80000 && bios_size < 0x00100000) {
 624         hw_error("PowerPC 601 / 620 / 970 need a 1MB BIOS\n");
 625     }
 626
 627     if (linux_boot) {
 628         kernel_base = KERNEL_LOAD_ADDR;
 629         /* now we can load the kernel */
 630         kernel_size = load_image_targphys(kernel_filename, kernel_base,
 631                                           ram_size - kernel_base);
 632         if (kernel_size < 0) {
 633             hw_error("qemu: could not load kernel '%s'\n", kernel_filename);
 634             exit(1);
 635         }
 636         /* load initrd */
 637         if (initrd_filename) {
 638             initrd_base = INITRD_LOAD_ADDR;
 639             initrd_size = load_image_targphys(initrd_filename, initrd_base,
 640                                               ram_size - initrd_base);
 641             if (initrd_size < 0) {
 642                 hw_error("qemu: could not load initial ram disk '%s'\n",
 643                           initrd_filename);
 644             }
 645         } else {
 646             initrd_base = 0;
 647             initrd_size = 0;
 648         }
 649         ppc_boot_device = 'm';
 650     } else {
 651         kernel_base = 0;
 652         kernel_size = 0;
 653         initrd_base = 0;
 654         initrd_size = 0;
 655         ppc_boot_device = '\0';
 656         /* For now, OHW cannot boot from the network. */
 657         for (i = 0; boot_device[i] != '\0'; i++) {
 658             if (boot_device[i] >= 'a' && boot_device[i] <= 'f') {
 659                 ppc_boot_device = boot_device[i];
 660                 break;
 661             }
 662         }
 663         if (ppc_boot_device == '\0') {
 664             fprintf(stderr, "No valid boot device for Mac99 machine\n");
 665             exit(1);
 666         }
 667     }
 668
 669     isa_mem_base = 0xc0000000;
 670     if (PPC_INPUT(env) != PPC_FLAGS_INPUT_6xx) {
 671         hw_error("Only 6xx bus is supported on PREP machine\n");
 672     }
 673     i8259 = i8259_init(first_cpu->irq_inputs[PPC6xx_INPUT_INT]);
 674     pci_bus = pci_prep_init(i8259);
 675     /* Hmm, prep has no pci-isa bridge ??? */
 676     isa_bus_new(NULL);
 677     isa_bus_irqs(i8259);
 678     //    pci_bus = i440fx_init();
 679     /* Register 8 MB of ISA IO space (needed for non-contiguous map) */
 680     PPC_io_memory = cpu_register_io_memory(PPC_prep_io_read,
 681                                            PPC_prep_io_write, sysctrl);
 682     cpu_register_physical_memory(0x80000000, 0x00800000, PPC_io_memory);
 683
 684     /* init basic PC hardware */
 685     pci_vga_init(pci_bus, 0, 0);
 686     //    openpic = openpic_init(0x00000000, 0xF0000000, 1);
 687     //    pit = pit_init(0x40, i8259[0]);
 688     rtc_init(2000);
 689
 690     if (serial_hds[0])
 691         serial_isa_init(0, serial_hds[0]);
 692     nb_nics1 = nb_nics;
 693     if (nb_nics1 > NE2000_NB_MAX)
 694         nb_nics1 = NE2000_NB_MAX;
 695     for(i = 0; i < nb_nics1; i++) {
 696         if (nd_table[i].model == NULL) {
 697             nd_table[i].model = qemu_strdup("ne2k_isa");
 698         }
 699         if (strcmp(nd_table[i].model, "ne2k_isa") == 0) {
 700             isa_ne2000_init(ne2000_io[i], ne2000_irq[i], &nd_table[i]);
 701         } else {
 702             pci_nic_init_nofail(&nd_table[i], "ne2k_pci", NULL);
 703         }
 704     }
 705
 706     if (drive_get_max_bus(IF_IDE) >= MAX_IDE_BUS) {
 707         fprintf(stderr, "qemu: too many IDE bus\n");
 708         exit(1);
 709     }
 710
 711     for(i = 0; i < MAX_IDE_BUS * MAX_IDE_DEVS; i++) {
 712         hd[i] = drive_get(IF_IDE, i / MAX_IDE_DEVS, i % MAX_IDE_DEVS);
 713     }
 714
 715     for(i = 0; i < MAX_IDE_BUS; i++) {
 716         isa_ide_init(ide_iobase[i], ide_iobase2[i], ide_irq[i],
 717                      hd[2 * i],
 718                      hd[2 * i + 1]);
 719     }
 720     isa_create_simple("i8042");
 721     DMA_init(1);
 722     //    SB16_init();
 723
 724     for(i = 0; i < MAX_FD; i++) {
 725         fd[i] = drive_get(IF_FLOPPY, 0, i);
 726     }
 727     fdctrl_init_isa(fd);
 728
 729     /* Register speaker port */
 730     register_ioport_read(0x61, 1, 1, speaker_ioport_read, NULL);
 731     register_ioport_write(0x61, 1, 1, speaker_ioport_write, NULL);
 732     /* Register fake IO ports for PREP */
 733     sysctrl->reset_irq = first_cpu->irq_inputs[PPC6xx_INPUT_HRESET];
 734     register_ioport_read(0x398, 2, 1, &PREP_io_read, sysctrl);
 735     register_ioport_write(0x398, 2, 1, &PREP_io_write, sysctrl);
 736     /* System control ports */
 737     register_ioport_read(0x0092, 0x01, 1, &PREP_io_800_readb, sysctrl);
 738     register_ioport_write(0x0092, 0x01, 1, &PREP_io_800_writeb, sysctrl);
 739     register_ioport_read(0x0800, 0x52, 1, &PREP_io_800_readb, sysctrl);
 740     register_ioport_write(0x0800, 0x52, 1, &PREP_io_800_writeb, sysctrl);
 741     /* PCI intack location */
 742     PPC_io_memory = cpu_register_io_memory(PPC_intack_read,
 743                                            PPC_intack_write, NULL);
 744     cpu_register_physical_memory(0xBFFFFFF0, 0x4, PPC_io_memory);
 745     /* PowerPC control and status register group */
 746 #if 0
 747     PPC_io_memory = cpu_register_io_memory(PPC_XCSR_read, PPC_XCSR_write,
 748                                            NULL);
 749     cpu_register_physical_memory(0xFEFF0000, 0x1000, PPC_io_memory);
 750 #endif
 751
 752     if (usb_enabled) {
 753         usb_ohci_init_pci(pci_bus, -1);
 754     }
 755
 756     m48t59 = m48t59_init(i8259[8], 0, 0x0074, NVRAM_SIZE, 59);
 757     if (m48t59 == NULL)
 758         return;
 759     sysctrl->nvram = m48t59;
 760
 761     /* Initialise NVRAM */
 762     nvram.opaque = m48t59;
 763     nvram.read_fn = &m48t59_read;
 764     nvram.write_fn = &m48t59_write;
 765     PPC_NVRAM_set_params(&nvram, NVRAM_SIZE, "PREP", ram_size, ppc_boot_device,
 766                          kernel_base, kernel_size,
 767                          kernel_cmdline,
 768                          initrd_base, initrd_size,
 769                          /* XXX: need an option to load a NVRAM image */
 770                          0,
 771                          graphic_width, graphic_height, graphic_depth);
 772
 773     /* Special port to get debug messages from Open-Firmware */
 774     register_ioport_write(0x0F00, 4, 1, &PPC_debug_write, NULL);
 775 }
 776
 777 static QEMUMachine prep_machine = {
 778     .name = "prep",
 779     .desc = "PowerPC PREP platform",
 780     .init = ppc_prep_init,
 781     .max_cpus = MAX_CPUS,
 782 };
 783
 784 static void prep_machine_init(void)
 785 {
 786     qemu_register_machine(&prep_machine);
 787 }
 788
 789 machine_init(prep_machine_init);