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/hw.h" 25 #include "hw/timer/m48t59.h" 26 #include "hw/i386/pc.h" 27 #include "hw/char/serial.h" 28 #include "hw/block/fdc.h" 29 #include "net/net.h" 30 #include "sysemu/sysemu.h" 31 #include "hw/isa/isa.h" 32 #include "hw/pci/pci.h" 33 #include "hw/pci/pci_host.h" 34 #include "hw/ppc/ppc.h" 35 #include "hw/boards.h" 36 #include "qemu/log.h" 37 #include "hw/ide.h" 38 #include "hw/loader.h" 39 #include "hw/timer/mc146818rtc.h" 40 #include "hw/isa/pc87312.h" 41 #include "sysemu/blockdev.h" 42 #include "sysemu/arch_init.h" 43 #include "sysemu/qtest.h" 44 #include "exec/address-spaces.h" 45 #include "elf.h" 46 47 //#define HARD_DEBUG_PPC_IO 48 //#define DEBUG_PPC_IO 49 50 /* SMP is not enabled, for now */ 51 #define MAX_CPUS 1 52 53 #define MAX_IDE_BUS 2 54 55 #define BIOS_SIZE (1024 * 1024) 56 #define BIOS_FILENAME "ppc_rom.bin" 57 #define KERNEL_LOAD_ADDR 0x01000000 58 #define INITRD_LOAD_ADDR 0x01800000 59 60 #if defined (HARD_DEBUG_PPC_IO) && !defined (DEBUG_PPC_IO) 61 #define DEBUG_PPC_IO 62 #endif 63 64 #if defined (HARD_DEBUG_PPC_IO) 65 #define PPC_IO_DPRINTF(fmt, ...) \ 66 do { \ 67 if (qemu_loglevel_mask(CPU_LOG_IOPORT)) { \ 68 qemu_log("%s: " fmt, __func__ , ## __VA_ARGS__); \ 69 } else { \ 70 printf("%s : " fmt, __func__ , ## __VA_ARGS__); \ 71 } \ 72 } while (0) 73 #elif defined (DEBUG_PPC_IO) 74 #define PPC_IO_DPRINTF(fmt, ...) \ 75 qemu_log_mask(CPU_LOG_IOPORT, fmt, ## __VA_ARGS__) 76 #else 77 #define PPC_IO_DPRINTF(fmt, ...) do { } while (0) 78 #endif 79 80 /* Constants for devices init */ 81 static const int ide_iobase[2] = { 0x1f0, 0x170 }; 82 static const int ide_iobase2[2] = { 0x3f6, 0x376 }; 83 static const int ide_irq[2] = { 13, 13 }; 84 85 #define NE2000_NB_MAX 6 86 87 static uint32_t ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 }; 88 static int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 }; 89 90 /* ISA IO ports bridge */ 91 #define PPC_IO_BASE 0x80000000 92 93 /* PowerPC control and status registers */ 94 #if 0 // Not used 95 static struct { 96 /* IDs */ 97 uint32_t veni_devi; 98 uint32_t revi; 99 /* Control and status */ 100 uint32_t gcsr; 101 uint32_t xcfr; 102 uint32_t ct32; 103 uint32_t mcsr; 104 /* General purpose registers */ 105 uint32_t gprg[6]; 106 /* Exceptions */ 107 uint32_t feen; 108 uint32_t fest; 109 uint32_t fema; 110 uint32_t fecl; 111 uint32_t eeen; 112 uint32_t eest; 113 uint32_t eecl; 114 uint32_t eeint; 115 uint32_t eemck0; 116 uint32_t eemck1; 117 /* Error diagnostic */ 118 } XCSR; 119 120 static void PPC_XCSR_writeb (void *opaque, 121 hwaddr addr, uint32_t value) 122 { 123 printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr, 124 value); 125 } 126 127 static void PPC_XCSR_writew (void *opaque, 128 hwaddr addr, uint32_t value) 129 { 130 printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr, 131 value); 132 } 133 134 static void PPC_XCSR_writel (void *opaque, 135 hwaddr addr, uint32_t value) 136 { 137 printf("%s: 0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", __func__, addr, 138 value); 139 } 140 141 static uint32_t PPC_XCSR_readb (void *opaque, hwaddr addr) 142 { 143 uint32_t retval = 0; 144 145 printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr, 146 retval); 147 148 return retval; 149 } 150 151 static uint32_t PPC_XCSR_readw (void *opaque, hwaddr addr) 152 { 153 uint32_t retval = 0; 154 155 printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr, 156 retval); 157 158 return retval; 159 } 160 161 static uint32_t PPC_XCSR_readl (void *opaque, hwaddr addr) 162 { 163 uint32_t retval = 0; 164 165 printf("%s: 0x" TARGET_FMT_plx " <= %08" PRIx32 "\n", __func__, addr, 166 retval); 167 168 return retval; 169 } 170 171 static const MemoryRegionOps PPC_XCSR_ops = { 172 .old_mmio = { 173 .read = { PPC_XCSR_readb, PPC_XCSR_readw, PPC_XCSR_readl, }, 174 .write = { PPC_XCSR_writeb, PPC_XCSR_writew, PPC_XCSR_writel, }, 175 }, 176 .endianness = DEVICE_LITTLE_ENDIAN, 177 }; 178 179 #endif 180 181 /* Fake super-io ports for PREP platform (Intel 82378ZB) */ 182 typedef struct sysctrl_t { 183 qemu_irq reset_irq; 184 M48t59State *nvram; 185 uint8_t state; 186 uint8_t syscontrol; 187 int contiguous_map; 188 int endian; 189 } sysctrl_t; 190 191 enum { 192 STATE_HARDFILE = 0x01, 193 }; 194 195 static sysctrl_t *sysctrl; 196 197 static void PREP_io_800_writeb (void *opaque, uint32_t addr, uint32_t val) 198 { 199 sysctrl_t *sysctrl = opaque; 200 201 PPC_IO_DPRINTF("0x%08" PRIx32 " => 0x%02" PRIx32 "\n", 202 addr - PPC_IO_BASE, val); 203 switch (addr) { 204 case 0x0092: 205 /* Special port 92 */ 206 /* Check soft reset asked */ 207 if (val & 0x01) { 208 qemu_irq_raise(sysctrl->reset_irq); 209 } else { 210 qemu_irq_lower(sysctrl->reset_irq); 211 } 212 /* Check LE mode */ 213 if (val & 0x02) { 214 sysctrl->endian = 1; 215 } else { 216 sysctrl->endian = 0; 217 } 218 break; 219 case 0x0800: 220 /* Motorola CPU configuration register : read-only */ 221 break; 222 case 0x0802: 223 /* Motorola base module feature register : read-only */ 224 break; 225 case 0x0803: 226 /* Motorola base module status register : read-only */ 227 break; 228 case 0x0808: 229 /* Hardfile light register */ 230 if (val & 1) 231 sysctrl->state |= STATE_HARDFILE; 232 else 233 sysctrl->state &= ~STATE_HARDFILE; 234 break; 235 case 0x0810: 236 /* Password protect 1 register */ 237 if (sysctrl->nvram != NULL) 238 m48t59_toggle_lock(sysctrl->nvram, 1); 239 break; 240 case 0x0812: 241 /* Password protect 2 register */ 242 if (sysctrl->nvram != NULL) 243 m48t59_toggle_lock(sysctrl->nvram, 2); 244 break; 245 case 0x0814: 246 /* L2 invalidate register */ 247 // tlb_flush(first_cpu, 1); 248 break; 249 case 0x081C: 250 /* system control register */ 251 sysctrl->syscontrol = val & 0x0F; 252 break; 253 case 0x0850: 254 /* I/O map type register */ 255 sysctrl->contiguous_map = val & 0x01; 256 break; 257 default: 258 printf("ERROR: unaffected IO port write: %04" PRIx32 259 " => %02" PRIx32"\n", addr, val); 260 break; 261 } 262 } 263 264 static uint32_t PREP_io_800_readb (void *opaque, uint32_t addr) 265 { 266 sysctrl_t *sysctrl = opaque; 267 uint32_t retval = 0xFF; 268 269 switch (addr) { 270 case 0x0092: 271 /* Special port 92 */ 272 retval = sysctrl->endian << 1; 273 break; 274 case 0x0800: 275 /* Motorola CPU configuration register */ 276 retval = 0xEF; /* MPC750 */ 277 break; 278 case 0x0802: 279 /* Motorola Base module feature register */ 280 retval = 0xAD; /* No ESCC, PMC slot neither ethernet */ 281 break; 282 case 0x0803: 283 /* Motorola base module status register */ 284 retval = 0xE0; /* Standard MPC750 */ 285 break; 286 case 0x080C: 287 /* Equipment present register: 288 * no L2 cache 289 * no upgrade processor 290 * no cards in PCI slots 291 * SCSI fuse is bad 292 */ 293 retval = 0x3C; 294 break; 295 case 0x0810: 296 /* Motorola base module extended feature register */ 297 retval = 0x39; /* No USB, CF and PCI bridge. NVRAM present */ 298 break; 299 case 0x0814: 300 /* L2 invalidate: don't care */ 301 break; 302 case 0x0818: 303 /* Keylock */ 304 retval = 0x00; 305 break; 306 case 0x081C: 307 /* system control register 308 * 7 - 6 / 1 - 0: L2 cache enable 309 */ 310 retval = sysctrl->syscontrol; 311 break; 312 case 0x0823: 313 /* */ 314 retval = 0x03; /* no L2 cache */ 315 break; 316 case 0x0850: 317 /* I/O map type register */ 318 retval = sysctrl->contiguous_map; 319 break; 320 default: 321 printf("ERROR: unaffected IO port: %04" PRIx32 " read\n", addr); 322 break; 323 } 324 PPC_IO_DPRINTF("0x%08" PRIx32 " <= 0x%02" PRIx32 "\n", 325 addr - PPC_IO_BASE, retval); 326 327 return retval; 328 } 329 330 static inline hwaddr prep_IO_address(sysctrl_t *sysctrl, 331 hwaddr addr) 332 { 333 if (sysctrl->contiguous_map == 0) { 334 /* 64 KB contiguous space for IOs */ 335 addr &= 0xFFFF; 336 } else { 337 /* 8 MB non-contiguous space for IOs */ 338 addr = (addr & 0x1F) | ((addr & 0x007FFF000) >> 7); 339 } 340 341 return addr; 342 } 343 344 static void PPC_prep_io_writeb (void *opaque, hwaddr addr, 345 uint32_t value) 346 { 347 sysctrl_t *sysctrl = opaque; 348 349 addr = prep_IO_address(sysctrl, addr); 350 cpu_outb(addr, value); 351 } 352 353 static uint32_t PPC_prep_io_readb (void *opaque, hwaddr addr) 354 { 355 sysctrl_t *sysctrl = opaque; 356 uint32_t ret; 357 358 addr = prep_IO_address(sysctrl, addr); 359 ret = cpu_inb(addr); 360 361 return ret; 362 } 363 364 static void PPC_prep_io_writew (void *opaque, hwaddr addr, 365 uint32_t value) 366 { 367 sysctrl_t *sysctrl = opaque; 368 369 addr = prep_IO_address(sysctrl, addr); 370 PPC_IO_DPRINTF("0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", addr, value); 371 cpu_outw(addr, value); 372 } 373 374 static uint32_t PPC_prep_io_readw (void *opaque, hwaddr addr) 375 { 376 sysctrl_t *sysctrl = opaque; 377 uint32_t ret; 378 379 addr = prep_IO_address(sysctrl, addr); 380 ret = cpu_inw(addr); 381 PPC_IO_DPRINTF("0x" TARGET_FMT_plx " <= 0x%08" PRIx32 "\n", addr, ret); 382 383 return ret; 384 } 385 386 static void PPC_prep_io_writel (void *opaque, hwaddr addr, 387 uint32_t value) 388 { 389 sysctrl_t *sysctrl = opaque; 390 391 addr = prep_IO_address(sysctrl, addr); 392 PPC_IO_DPRINTF("0x" TARGET_FMT_plx " => 0x%08" PRIx32 "\n", addr, value); 393 cpu_outl(addr, value); 394 } 395 396 static uint32_t PPC_prep_io_readl (void *opaque, hwaddr addr) 397 { 398 sysctrl_t *sysctrl = opaque; 399 uint32_t ret; 400 401 addr = prep_IO_address(sysctrl, addr); 402 ret = cpu_inl(addr); 403 PPC_IO_DPRINTF("0x" TARGET_FMT_plx " <= 0x%08" PRIx32 "\n", addr, ret); 404 405 return ret; 406 } 407 408 static const MemoryRegionOps PPC_prep_io_ops = { 409 .old_mmio = { 410 .read = { PPC_prep_io_readb, PPC_prep_io_readw, PPC_prep_io_readl }, 411 .write = { PPC_prep_io_writeb, PPC_prep_io_writew, PPC_prep_io_writel }, 412 }, 413 .endianness = DEVICE_NATIVE_ENDIAN, 414 }; 415 416 #define NVRAM_SIZE 0x2000 417 418 static void cpu_request_exit(void *opaque, int irq, int level) 419 { 420 CPUState *cpu = current_cpu; 421 422 if (cpu && level) { 423 cpu_exit(cpu); 424 } 425 } 426 427 static void ppc_prep_reset(void *opaque) 428 { 429 PowerPCCPU *cpu = opaque; 430 431 cpu_reset(CPU(cpu)); 432 433 /* Reset address */ 434 cpu->env.nip = 0xfffffffc; 435 } 436 437 static const MemoryRegionPortio prep_portio_list[] = { 438 /* System control ports */ 439 { 0x0092, 1, 1, .read = PREP_io_800_readb, .write = PREP_io_800_writeb, }, 440 { 0x0800, 0x52, 1, 441 .read = PREP_io_800_readb, .write = PREP_io_800_writeb, }, 442 /* Special port to get debug messages from Open-Firmware */ 443 { 0x0F00, 4, 1, .write = PPC_debug_write, }, 444 PORTIO_END_OF_LIST(), 445 }; 446 447 /* PowerPC PREP hardware initialisation */ 448 static void ppc_prep_init(QEMUMachineInitArgs *args) 449 { 450 ram_addr_t ram_size = args->ram_size; 451 const char *cpu_model = args->cpu_model; 452 const char *kernel_filename = args->kernel_filename; 453 const char *kernel_cmdline = args->kernel_cmdline; 454 const char *initrd_filename = args->initrd_filename; 455 const char *boot_device = args->boot_order; 456 MemoryRegion *sysmem = get_system_memory(); 457 PowerPCCPU *cpu = NULL; 458 CPUPPCState *env = NULL; 459 nvram_t nvram; 460 M48t59State *m48t59; 461 MemoryRegion *PPC_io_memory = g_new(MemoryRegion, 1); 462 PortioList *port_list = g_new(PortioList, 1); 463 #if 0 464 MemoryRegion *xcsr = g_new(MemoryRegion, 1); 465 #endif 466 int linux_boot, i, nb_nics1; 467 MemoryRegion *ram = g_new(MemoryRegion, 1); 468 uint32_t kernel_base, initrd_base; 469 long kernel_size, initrd_size; 470 DeviceState *dev; 471 PCIHostState *pcihost; 472 PCIBus *pci_bus; 473 PCIDevice *pci; 474 ISABus *isa_bus; 475 ISADevice *isa; 476 qemu_irq *cpu_exit_irq; 477 int ppc_boot_device; 478 DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS]; 479 480 sysctrl = g_malloc0(sizeof(sysctrl_t)); 481 482 linux_boot = (kernel_filename != NULL); 483 484 /* init CPUs */ 485 if (cpu_model == NULL) 486 cpu_model = "602"; 487 for (i = 0; i < smp_cpus; i++) { 488 cpu = cpu_ppc_init(cpu_model); 489 if (cpu == NULL) { 490 fprintf(stderr, "Unable to find PowerPC CPU definition\n"); 491 exit(1); 492 } 493 env = &cpu->env; 494 495 if (env->flags & POWERPC_FLAG_RTC_CLK) { 496 /* POWER / PowerPC 601 RTC clock frequency is 7.8125 MHz */ 497 cpu_ppc_tb_init(env, 7812500UL); 498 } else { 499 /* Set time-base frequency to 100 Mhz */ 500 cpu_ppc_tb_init(env, 100UL * 1000UL * 1000UL); 501 } 502 qemu_register_reset(ppc_prep_reset, cpu); 503 } 504 505 /* allocate RAM */ 506 memory_region_init_ram(ram, NULL, "ppc_prep.ram", ram_size); 507 vmstate_register_ram_global(ram); 508 memory_region_add_subregion(sysmem, 0, ram); 509 510 if (linux_boot) { 511 kernel_base = KERNEL_LOAD_ADDR; 512 /* now we can load the kernel */ 513 kernel_size = load_image_targphys(kernel_filename, kernel_base, 514 ram_size - kernel_base); 515 if (kernel_size < 0) { 516 hw_error("qemu: could not load kernel '%s'\n", kernel_filename); 517 exit(1); 518 } 519 /* load initrd */ 520 if (initrd_filename) { 521 initrd_base = INITRD_LOAD_ADDR; 522 initrd_size = load_image_targphys(initrd_filename, initrd_base, 523 ram_size - initrd_base); 524 if (initrd_size < 0) { 525 hw_error("qemu: could not load initial ram disk '%s'\n", 526 initrd_filename); 527 } 528 } else { 529 initrd_base = 0; 530 initrd_size = 0; 531 } 532 ppc_boot_device = 'm'; 533 } else { 534 kernel_base = 0; 535 kernel_size = 0; 536 initrd_base = 0; 537 initrd_size = 0; 538 ppc_boot_device = '\0'; 539 /* For now, OHW cannot boot from the network. */ 540 for (i = 0; boot_device[i] != '\0'; i++) { 541 if (boot_device[i] >= 'a' && boot_device[i] <= 'f') { 542 ppc_boot_device = boot_device[i]; 543 break; 544 } 545 } 546 if (ppc_boot_device == '\0') { 547 fprintf(stderr, "No valid boot device for Mac99 machine\n"); 548 exit(1); 549 } 550 } 551 552 if (PPC_INPUT(env) != PPC_FLAGS_INPUT_6xx) { 553 hw_error("Only 6xx bus is supported on PREP machine\n"); 554 } 555 556 dev = qdev_create(NULL, "raven-pcihost"); 557 if (bios_name == NULL) { 558 bios_name = BIOS_FILENAME; 559 } 560 qdev_prop_set_string(dev, "bios-name", bios_name); 561 qdev_prop_set_uint32(dev, "elf-machine", ELF_MACHINE); 562 pcihost = PCI_HOST_BRIDGE(dev); 563 object_property_add_child(qdev_get_machine(), "raven", OBJECT(dev), NULL); 564 qdev_init_nofail(dev); 565 pci_bus = (PCIBus *)qdev_get_child_bus(dev, "pci.0"); 566 if (pci_bus == NULL) { 567 fprintf(stderr, "Couldn't create PCI host controller.\n"); 568 exit(1); 569 } 570 571 /* PCI -> ISA bridge */ 572 pci = pci_create_simple(pci_bus, PCI_DEVFN(1, 0), "i82378"); 573 cpu_exit_irq = qemu_allocate_irqs(cpu_request_exit, NULL, 1); 574 cpu = POWERPC_CPU(first_cpu); 575 qdev_connect_gpio_out(&pci->qdev, 0, 576 cpu->env.irq_inputs[PPC6xx_INPUT_INT]); 577 qdev_connect_gpio_out(&pci->qdev, 1, *cpu_exit_irq); 578 sysbus_connect_irq(&pcihost->busdev, 0, qdev_get_gpio_in(&pci->qdev, 9)); 579 sysbus_connect_irq(&pcihost->busdev, 1, qdev_get_gpio_in(&pci->qdev, 11)); 580 sysbus_connect_irq(&pcihost->busdev, 2, qdev_get_gpio_in(&pci->qdev, 9)); 581 sysbus_connect_irq(&pcihost->busdev, 3, qdev_get_gpio_in(&pci->qdev, 11)); 582 isa_bus = ISA_BUS(qdev_get_child_bus(DEVICE(pci), "isa.0")); 583 584 /* Super I/O (parallel + serial ports) */ 585 isa = isa_create(isa_bus, TYPE_PC87312); 586 dev = DEVICE(isa); 587 qdev_prop_set_uint8(dev, "config", 13); /* fdc, ser0, ser1, par0 */ 588 qdev_init_nofail(dev); 589 590 /* Register 8 MB of ISA IO space (needed for non-contiguous map) */ 591 memory_region_init_io(PPC_io_memory, NULL, &PPC_prep_io_ops, sysctrl, 592 "ppc-io", 0x00800000); 593 memory_region_add_subregion(sysmem, 0x80000000, PPC_io_memory); 594 595 /* init basic PC hardware */ 596 pci_vga_init(pci_bus); 597 598 nb_nics1 = nb_nics; 599 if (nb_nics1 > NE2000_NB_MAX) 600 nb_nics1 = NE2000_NB_MAX; 601 for(i = 0; i < nb_nics1; i++) { 602 if (nd_table[i].model == NULL) { 603 nd_table[i].model = g_strdup("ne2k_isa"); 604 } 605 if (strcmp(nd_table[i].model, "ne2k_isa") == 0) { 606 isa_ne2000_init(isa_bus, ne2000_io[i], ne2000_irq[i], 607 &nd_table[i]); 608 } else { 609 pci_nic_init_nofail(&nd_table[i], pci_bus, "ne2k_pci", NULL); 610 } 611 } 612 613 ide_drive_get(hd, MAX_IDE_BUS); 614 for(i = 0; i < MAX_IDE_BUS; i++) { 615 isa_ide_init(isa_bus, ide_iobase[i], ide_iobase2[i], ide_irq[i], 616 hd[2 * i], 617 hd[2 * i + 1]); 618 } 619 isa_create_simple(isa_bus, "i8042"); 620 621 cpu = POWERPC_CPU(first_cpu); 622 sysctrl->reset_irq = cpu->env.irq_inputs[PPC6xx_INPUT_HRESET]; 623 624 portio_list_init(port_list, NULL, prep_portio_list, sysctrl, "prep"); 625 portio_list_add(port_list, isa_address_space_io(isa), 0x0); 626 627 /* PowerPC control and status register group */ 628 #if 0 629 memory_region_init_io(xcsr, NULL, &PPC_XCSR_ops, NULL, "ppc-xcsr", 0x1000); 630 memory_region_add_subregion(sysmem, 0xFEFF0000, xcsr); 631 #endif 632 633 if (usb_enabled(false)) { 634 pci_create_simple(pci_bus, -1, "pci-ohci"); 635 } 636 637 m48t59 = m48t59_init_isa(isa_bus, 0x0074, NVRAM_SIZE, 59); 638 if (m48t59 == NULL) 639 return; 640 sysctrl->nvram = m48t59; 641 642 /* Initialise NVRAM */ 643 nvram.opaque = m48t59; 644 nvram.read_fn = &m48t59_read; 645 nvram.write_fn = &m48t59_write; 646 PPC_NVRAM_set_params(&nvram, NVRAM_SIZE, "PREP", ram_size, ppc_boot_device, 647 kernel_base, kernel_size, 648 kernel_cmdline, 649 initrd_base, initrd_size, 650 /* XXX: need an option to load a NVRAM image */ 651 0, 652 graphic_width, graphic_height, graphic_depth); 653 } 654 655 static QEMUMachine prep_machine = { 656 .name = "prep", 657 .desc = "PowerPC PREP platform", 658 .init = ppc_prep_init, 659 .max_cpus = MAX_CPUS, 660 .default_boot_order = "cad", 661 }; 662 663 static void prep_machine_init(void) 664 { 665 qemu_register_machine(&prep_machine); 666 } 667 668 machine_init(prep_machine_init); 669