hw/sun4u.c

   1 /*
   2  * QEMU Sun4u/Sun4v System Emulator
   3  *
   4  * Copyright (c) 2005 Fabrice Bellard
   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 "pci/pci.h"
  26 #include "apb_pci.h"
  27 #include "pc.h"
  28 #include "serial.h"
  29 #include "nvram.h"
  30 #include "fdc.h"
  31 #include "net/net.h"
  32 #include "qemu/timer.h"
  33 #include "sysemu/sysemu.h"
  34 #include "boards.h"
  35 #include "firmware_abi.h"
  36 #include "fw_cfg.h"
  37 #include "sysbus.h"
  38 #include "ide.h"
  39 #include "loader.h"
  40 #include "elf.h"
  41 #include "sysemu/blockdev.h"
  42 #include "exec/address-spaces.h"
  43
  44 //#define DEBUG_IRQ
  45 //#define DEBUG_EBUS
  46 //#define DEBUG_TIMER
  47
  48 #ifdef DEBUG_IRQ
  49 #define CPUIRQ_DPRINTF(fmt, ...)                                \
  50     do { printf("CPUIRQ: " fmt , ## __VA_ARGS__); } while (0)
  51 #else
  52 #define CPUIRQ_DPRINTF(fmt, ...)
  53 #endif
  54
  55 #ifdef DEBUG_EBUS
  56 #define EBUS_DPRINTF(fmt, ...)                                  \
  57     do { printf("EBUS: " fmt , ## __VA_ARGS__); } while (0)
  58 #else
  59 #define EBUS_DPRINTF(fmt, ...)
  60 #endif
  61
  62 #ifdef DEBUG_TIMER
  63 #define TIMER_DPRINTF(fmt, ...)                                  \
  64     do { printf("TIMER: " fmt , ## __VA_ARGS__); } while (0)
  65 #else
  66 #define TIMER_DPRINTF(fmt, ...)
  67 #endif
  68
  69 #define KERNEL_LOAD_ADDR     0x00404000
  70 #define CMDLINE_ADDR         0x003ff000
  71 #define PROM_SIZE_MAX        (4 * 1024 * 1024)
  72 #define PROM_VADDR           0x000ffd00000ULL
  73 #define APB_SPECIAL_BASE     0x1fe00000000ULL
  74 #define APB_MEM_BASE         0x1ff00000000ULL
  75 #define APB_PCI_IO_BASE      (APB_SPECIAL_BASE + 0x02000000ULL)
  76 #define PROM_FILENAME        "openbios-sparc64"
  77 #define NVRAM_SIZE           0x2000
  78 #define MAX_IDE_BUS          2
  79 #define BIOS_CFG_IOPORT      0x510
  80 #define FW_CFG_SPARC64_WIDTH (FW_CFG_ARCH_LOCAL + 0x00)
  81 #define FW_CFG_SPARC64_HEIGHT (FW_CFG_ARCH_LOCAL + 0x01)
  82 #define FW_CFG_SPARC64_DEPTH (FW_CFG_ARCH_LOCAL + 0x02)
  83
  84 #define IVEC_MAX             0x30
  85
  86 #define TICK_MAX             0x7fffffffffffffffULL
  87
  88 struct hwdef {
  89     const char * const default_cpu_model;
  90     uint16_t machine_id;
  91     uint64_t prom_addr;
  92     uint64_t console_serial_base;
  93 };
  94
  95 typedef struct EbusState {
  96     PCIDevice pci_dev;
  97     MemoryRegion bar0;
  98     MemoryRegion bar1;
  99 } EbusState;
 100
 101 int DMA_get_channel_mode (int nchan)
 102 {
 103     return 0;
 104 }
 105 int DMA_read_memory (int nchan, void *buf, int pos, int size)
 106 {
 107     return 0;
 108 }
 109 int DMA_write_memory (int nchan, void *buf, int pos, int size)
 110 {
 111     return 0;
 112 }
 113 void DMA_hold_DREQ (int nchan) {}
 114 void DMA_release_DREQ (int nchan) {}
 115 void DMA_schedule(int nchan) {}
 116
 117 void DMA_init(int high_page_enable, qemu_irq *cpu_request_exit)
 118 {
 119 }
 120
 121 void DMA_register_channel (int nchan,
 122                            DMA_transfer_handler transfer_handler,
 123                            void *opaque)
 124 {
 125 }
 126
 127 static int fw_cfg_boot_set(void *opaque, const char *boot_device)
 128 {
 129     fw_cfg_add_i16(opaque, FW_CFG_BOOT_DEVICE, boot_device[0]);
 130     return 0;
 131 }
 132
 133 static int sun4u_NVRAM_set_params(M48t59State *nvram, uint16_t NVRAM_size,
 134                                   const char *arch, ram_addr_t RAM_size,
 135                                   const char *boot_devices,
 136                                   uint32_t kernel_image, uint32_t kernel_size,
 137                                   const char *cmdline,
 138                                   uint32_t initrd_image, uint32_t initrd_size,
 139                                   uint32_t NVRAM_image,
 140                                   int width, int height, int depth,
 141                                   const uint8_t *macaddr)
 142 {
 143     unsigned int i;
 144     uint32_t start, end;
 145     uint8_t image[0x1ff0];
 146     struct OpenBIOS_nvpart_v1 *part_header;
 147
 148     memset(image, '\0', sizeof(image));
 149
 150     start = 0;
 151
 152     // OpenBIOS nvram variables
 153     // Variable partition
 154     part_header = (struct OpenBIOS_nvpart_v1 *)&image[start];
 155     part_header->signature = OPENBIOS_PART_SYSTEM;
 156     pstrcpy(part_header->name, sizeof(part_header->name), "system");
 157
 158     end = start + sizeof(struct OpenBIOS_nvpart_v1);
 159     for (i = 0; i < nb_prom_envs; i++)
 160         end = OpenBIOS_set_var(image, end, prom_envs[i]);
 161
 162     // End marker
 163     image[end++] = '\0';
 164
 165     end = start + ((end - start + 15) & ~15);
 166     OpenBIOS_finish_partition(part_header, end - start);
 167
 168     // free partition
 169     start = end;
 170     part_header = (struct OpenBIOS_nvpart_v1 *)&image[start];
 171     part_header->signature = OPENBIOS_PART_FREE;
 172     pstrcpy(part_header->name, sizeof(part_header->name), "free");
 173
 174     end = 0x1fd0;
 175     OpenBIOS_finish_partition(part_header, end - start);
 176
 177     Sun_init_header((struct Sun_nvram *)&image[0x1fd8], macaddr, 0x80);
 178
 179     for (i = 0; i < sizeof(image); i++)
 180         m48t59_write(nvram, i, image[i]);
 181
 182     return 0;
 183 }
 184
 185 static uint64_t sun4u_load_kernel(const char *kernel_filename,
 186                                   const char *initrd_filename,
 187                                   ram_addr_t RAM_size, uint64_t *initrd_size,
 188                                   uint64_t *initrd_addr, uint64_t *kernel_addr,
 189                                   uint64_t *kernel_entry)
 190 {
 191     int linux_boot;
 192     unsigned int i;
 193     long kernel_size;
 194     uint8_t *ptr;
 195     uint64_t kernel_top;
 196
 197     linux_boot = (kernel_filename != NULL);
 198
 199     kernel_size = 0;
 200     if (linux_boot) {
 201         int bswap_needed;
 202
 203 #ifdef BSWAP_NEEDED
 204         bswap_needed = 1;
 205 #else
 206         bswap_needed = 0;
 207 #endif
 208         kernel_size = load_elf(kernel_filename, NULL, NULL, kernel_entry,
 209                                kernel_addr, &kernel_top, 1, ELF_MACHINE, 0);
 210         if (kernel_size < 0) {
 211             *kernel_addr = KERNEL_LOAD_ADDR;
 212             *kernel_entry = KERNEL_LOAD_ADDR;
 213             kernel_size = load_aout(kernel_filename, KERNEL_LOAD_ADDR,
 214                                     RAM_size - KERNEL_LOAD_ADDR, bswap_needed,
 215                                     TARGET_PAGE_SIZE);
 216         }
 217         if (kernel_size < 0) {
 218             kernel_size = load_image_targphys(kernel_filename,
 219                                               KERNEL_LOAD_ADDR,
 220                                               RAM_size - KERNEL_LOAD_ADDR);
 221         }
 222         if (kernel_size < 0) {
 223             fprintf(stderr, "qemu: could not load kernel '%s'\n",
 224                     kernel_filename);
 225             exit(1);
 226         }
 227         /* load initrd above kernel */
 228         *initrd_size = 0;
 229         if (initrd_filename) {
 230             *initrd_addr = TARGET_PAGE_ALIGN(kernel_top);
 231
 232             *initrd_size = load_image_targphys(initrd_filename,
 233                                                *initrd_addr,
 234                                                RAM_size - *initrd_addr);
 235             if ((int)*initrd_size < 0) {
 236                 fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
 237                         initrd_filename);
 238                 exit(1);
 239             }
 240         }
 241         if (*initrd_size > 0) {
 242             for (i = 0; i < 64 * TARGET_PAGE_SIZE; i += TARGET_PAGE_SIZE) {
 243                 ptr = rom_ptr(*kernel_addr + i);
 244                 if (ldl_p(ptr + 8) == 0x48647253) { /* HdrS */
 245                     stl_p(ptr + 24, *initrd_addr + *kernel_addr);
 246                     stl_p(ptr + 28, *initrd_size);
 247                     break;
 248                 }
 249             }
 250         }
 251     }
 252     return kernel_size;
 253 }
 254
 255 void cpu_check_irqs(CPUSPARCState *env)
 256 {
 257     uint32_t pil = env->pil_in |
 258                   (env->softint & ~(SOFTINT_TIMER | SOFTINT_STIMER));
 259
 260     /* TT_IVEC has a higher priority (16) than TT_EXTINT (31..17) */
 261     if (env->ivec_status & 0x20) {
 262         return;
 263     }
 264     /* check if TM or SM in SOFTINT are set
 265        setting these also causes interrupt 14 */
 266     if (env->softint & (SOFTINT_TIMER | SOFTINT_STIMER)) {
 267         pil |= 1 << 14;
 268     }
 269
 270     /* The bit corresponding to psrpil is (1<< psrpil), the next bit
 271        is (2 << psrpil). */
 272     if (pil < (2 << env->psrpil)){
 273         if (env->interrupt_request & CPU_INTERRUPT_HARD) {
 274             CPUIRQ_DPRINTF("Reset CPU IRQ (current interrupt %x)\n",
 275                            env->interrupt_index);
 276             env->interrupt_index = 0;
 277             cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
 278         }
 279         return;
 280     }
 281
 282     if (cpu_interrupts_enabled(env)) {
 283
 284         unsigned int i;
 285
 286         for (i = 15; i > env->psrpil; i--) {
 287             if (pil & (1 << i)) {
 288                 int old_interrupt = env->interrupt_index;
 289                 int new_interrupt = TT_EXTINT | i;
 290
 291                 if (unlikely(env->tl > 0 && cpu_tsptr(env)->tt > new_interrupt
 292                   && ((cpu_tsptr(env)->tt & 0x1f0) == TT_EXTINT))) {
 293                     CPUIRQ_DPRINTF("Not setting CPU IRQ: TL=%d "
 294                                    "current %x >= pending %x\n",
 295                                    env->tl, cpu_tsptr(env)->tt, new_interrupt);
 296                 } else if (old_interrupt != new_interrupt) {
 297                     env->interrupt_index = new_interrupt;
 298                     CPUIRQ_DPRINTF("Set CPU IRQ %d old=%x new=%x\n", i,
 299                                    old_interrupt, new_interrupt);
 300                     cpu_interrupt(env, CPU_INTERRUPT_HARD);
 301                 }
 302                 break;
 303             }
 304         }
 305     } else if (env->interrupt_request & CPU_INTERRUPT_HARD) {
 306         CPUIRQ_DPRINTF("Interrupts disabled, pil=%08x pil_in=%08x softint=%08x "
 307                        "current interrupt %x\n",
 308                        pil, env->pil_in, env->softint, env->interrupt_index);
 309         env->interrupt_index = 0;
 310         cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
 311     }
 312 }
 313
 314 static void cpu_kick_irq(SPARCCPU *cpu)
 315 {
 316     CPUSPARCState *env = &cpu->env;
 317
 318     env->halted = 0;
 319     cpu_check_irqs(env);
 320     qemu_cpu_kick(CPU(cpu));
 321 }
 322
 323 static void cpu_set_ivec_irq(void *opaque, int irq, int level)
 324 {
 325     SPARCCPU *cpu = opaque;
 326     CPUSPARCState *env = &cpu->env;
 327
 328     if (level) {
 329         if (!(env->ivec_status & 0x20)) {
 330             CPUIRQ_DPRINTF("Raise IVEC IRQ %d\n", irq);
 331             env->halted = 0;
 332             env->interrupt_index = TT_IVEC;
 333             env->ivec_status |= 0x20;
 334             env->ivec_data[0] = (0x1f << 6) | irq;
 335             env->ivec_data[1] = 0;
 336             env->ivec_data[2] = 0;
 337             cpu_interrupt(env, CPU_INTERRUPT_HARD);
 338         }
 339     } else {
 340         if (env->ivec_status & 0x20) {
 341             CPUIRQ_DPRINTF("Lower IVEC IRQ %d\n", irq);
 342             env->ivec_status &= ~0x20;
 343             cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
 344         }
 345     }
 346 }
 347
 348 typedef struct ResetData {
 349     SPARCCPU *cpu;
 350     uint64_t prom_addr;
 351 } ResetData;
 352
 353 void cpu_put_timer(QEMUFile *f, CPUTimer *s)
 354 {
 355     qemu_put_be32s(f, &s->frequency);
 356     qemu_put_be32s(f, &s->disabled);
 357     qemu_put_be64s(f, &s->disabled_mask);
 358     qemu_put_sbe64s(f, &s->clock_offset);
 359
 360     qemu_put_timer(f, s->qtimer);
 361 }
 362
 363 void cpu_get_timer(QEMUFile *f, CPUTimer *s)
 364 {
 365     qemu_get_be32s(f, &s->frequency);
 366     qemu_get_be32s(f, &s->disabled);
 367     qemu_get_be64s(f, &s->disabled_mask);
 368     qemu_get_sbe64s(f, &s->clock_offset);
 369
 370     qemu_get_timer(f, s->qtimer);
 371 }
 372
 373 static CPUTimer *cpu_timer_create(const char *name, SPARCCPU *cpu,
 374                                   QEMUBHFunc *cb, uint32_t frequency,
 375                                   uint64_t disabled_mask)
 376 {
 377     CPUTimer *timer = g_malloc0(sizeof (CPUTimer));
 378
 379     timer->name = name;
 380     timer->frequency = frequency;
 381     timer->disabled_mask = disabled_mask;
 382
 383     timer->disabled = 1;
 384     timer->clock_offset = qemu_get_clock_ns(vm_clock);
 385
 386     timer->qtimer = qemu_new_timer_ns(vm_clock, cb, cpu);
 387
 388     return timer;
 389 }
 390
 391 static void cpu_timer_reset(CPUTimer *timer)
 392 {
 393     timer->disabled = 1;
 394     timer->clock_offset = qemu_get_clock_ns(vm_clock);
 395
 396     qemu_del_timer(timer->qtimer);
 397 }
 398
 399 static void main_cpu_reset(void *opaque)
 400 {
 401     ResetData *s = (ResetData *)opaque;
 402     CPUSPARCState *env = &s->cpu->env;
 403     static unsigned int nr_resets;
 404
 405     cpu_reset(CPU(s->cpu));
 406
 407     cpu_timer_reset(env->tick);
 408     cpu_timer_reset(env->stick);
 409     cpu_timer_reset(env->hstick);
 410
 411     env->gregs[1] = 0; // Memory start
 412     env->gregs[2] = ram_size; // Memory size
 413     env->gregs[3] = 0; // Machine description XXX
 414     if (nr_resets++ == 0) {
 415         /* Power on reset */
 416         env->pc = s->prom_addr + 0x20ULL;
 417     } else {
 418         env->pc = s->prom_addr + 0x40ULL;
 419     }
 420     env->npc = env->pc + 4;
 421 }
 422
 423 static void tick_irq(void *opaque)
 424 {
 425     SPARCCPU *cpu = opaque;
 426     CPUSPARCState *env = &cpu->env;
 427
 428     CPUTimer* timer = env->tick;
 429
 430     if (timer->disabled) {
 431         CPUIRQ_DPRINTF("tick_irq: softint disabled\n");
 432         return;
 433     } else {
 434         CPUIRQ_DPRINTF("tick: fire\n");
 435     }
 436
 437     env->softint |= SOFTINT_TIMER;
 438     cpu_kick_irq(cpu);
 439 }
 440
 441 static void stick_irq(void *opaque)
 442 {
 443     SPARCCPU *cpu = opaque;
 444     CPUSPARCState *env = &cpu->env;
 445
 446     CPUTimer* timer = env->stick;
 447
 448     if (timer->disabled) {
 449         CPUIRQ_DPRINTF("stick_irq: softint disabled\n");
 450         return;
 451     } else {
 452         CPUIRQ_DPRINTF("stick: fire\n");
 453     }
 454
 455     env->softint |= SOFTINT_STIMER;
 456     cpu_kick_irq(cpu);
 457 }
 458
 459 static void hstick_irq(void *opaque)
 460 {
 461     SPARCCPU *cpu = opaque;
 462     CPUSPARCState *env = &cpu->env;
 463
 464     CPUTimer* timer = env->hstick;
 465
 466     if (timer->disabled) {
 467         CPUIRQ_DPRINTF("hstick_irq: softint disabled\n");
 468         return;
 469     } else {
 470         CPUIRQ_DPRINTF("hstick: fire\n");
 471     }
 472
 473     env->softint |= SOFTINT_STIMER;
 474     cpu_kick_irq(cpu);
 475 }
 476
 477 static int64_t cpu_to_timer_ticks(int64_t cpu_ticks, uint32_t frequency)
 478 {
 479     return muldiv64(cpu_ticks, get_ticks_per_sec(), frequency);
 480 }
 481
 482 static uint64_t timer_to_cpu_ticks(int64_t timer_ticks, uint32_t frequency)
 483 {
 484     return muldiv64(timer_ticks, frequency, get_ticks_per_sec());
 485 }
 486
 487 void cpu_tick_set_count(CPUTimer *timer, uint64_t count)
 488 {
 489     uint64_t real_count = count & ~timer->disabled_mask;
 490     uint64_t disabled_bit = count & timer->disabled_mask;
 491
 492     int64_t vm_clock_offset = qemu_get_clock_ns(vm_clock) -
 493                     cpu_to_timer_ticks(real_count, timer->frequency);
 494
 495     TIMER_DPRINTF("%s set_count count=0x%016lx (%s) p=%p\n",
 496                   timer->name, real_count,
 497                   timer->disabled?"disabled":"enabled", timer);
 498
 499     timer->disabled = disabled_bit ? 1 : 0;
 500     timer->clock_offset = vm_clock_offset;
 501 }
 502
 503 uint64_t cpu_tick_get_count(CPUTimer *timer)
 504 {
 505     uint64_t real_count = timer_to_cpu_ticks(
 506                     qemu_get_clock_ns(vm_clock) - timer->clock_offset,
 507                     timer->frequency);
 508
 509     TIMER_DPRINTF("%s get_count count=0x%016lx (%s) p=%p\n",
 510            timer->name, real_count,
 511            timer->disabled?"disabled":"enabled", timer);
 512
 513     if (timer->disabled)
 514         real_count |= timer->disabled_mask;
 515
 516     return real_count;
 517 }
 518
 519 void cpu_tick_set_limit(CPUTimer *timer, uint64_t limit)
 520 {
 521     int64_t now = qemu_get_clock_ns(vm_clock);
 522
 523     uint64_t real_limit = limit & ~timer->disabled_mask;
 524     timer->disabled = (limit & timer->disabled_mask) ? 1 : 0;
 525
 526     int64_t expires = cpu_to_timer_ticks(real_limit, timer->frequency) +
 527                     timer->clock_offset;
 528
 529     if (expires < now) {
 530         expires = now + 1;
 531     }
 532
 533     TIMER_DPRINTF("%s set_limit limit=0x%016lx (%s) p=%p "
 534                   "called with limit=0x%016lx at 0x%016lx (delta=0x%016lx)\n",
 535                   timer->name, real_limit,
 536                   timer->disabled?"disabled":"enabled",
 537                   timer, limit,
 538                   timer_to_cpu_ticks(now - timer->clock_offset,
 539                                      timer->frequency),
 540                   timer_to_cpu_ticks(expires - now, timer->frequency));
 541
 542     if (!real_limit) {
 543         TIMER_DPRINTF("%s set_limit limit=ZERO - not starting timer\n",
 544                 timer->name);
 545         qemu_del_timer(timer->qtimer);
 546     } else if (timer->disabled) {
 547         qemu_del_timer(timer->qtimer);
 548     } else {
 549         qemu_mod_timer(timer->qtimer, expires);
 550     }
 551 }
 552
 553 static void isa_irq_handler(void *opaque, int n, int level)
 554 {
 555     static const int isa_irq_to_ivec[16] = {
 556         [1] = 0x29, /* keyboard */
 557         [4] = 0x2b, /* serial */
 558         [6] = 0x27, /* floppy */
 559         [7] = 0x22, /* parallel */
 560         [12] = 0x2a, /* mouse */
 561     };
 562     qemu_irq *irqs = opaque;
 563     int ivec;
 564
 565     assert(n < 16);
 566     ivec = isa_irq_to_ivec[n];
 567     EBUS_DPRINTF("Set ISA IRQ %d level %d -> ivec 0x%x\n", n, level, ivec);
 568     if (ivec) {
 569         qemu_set_irq(irqs[ivec], level);
 570     }
 571 }
 572
 573 /* EBUS (Eight bit bus) bridge */
 574 static ISABus *
 575 pci_ebus_init(PCIBus *bus, int devfn, qemu_irq *irqs)
 576 {
 577     qemu_irq *isa_irq;
 578     PCIDevice *pci_dev;
 579     ISABus *isa_bus;
 580
 581     pci_dev = pci_create_simple(bus, devfn, "ebus");
 582     isa_bus = DO_UPCAST(ISABus, qbus,
 583                         qdev_get_child_bus(&pci_dev->qdev, "isa.0"));
 584     isa_irq = qemu_allocate_irqs(isa_irq_handler, irqs, 16);
 585     isa_bus_irqs(isa_bus, isa_irq);
 586     return isa_bus;
 587 }
 588
 589 static int
 590 pci_ebus_init1(PCIDevice *pci_dev)
 591 {
 592     EbusState *s = DO_UPCAST(EbusState, pci_dev, pci_dev);
 593
 594     isa_bus_new(&pci_dev->qdev, pci_address_space_io(pci_dev));
 595
 596     pci_dev->config[0x04] = 0x06; // command = bus master, pci mem
 597     pci_dev->config[0x05] = 0x00;
 598     pci_dev->config[0x06] = 0xa0; // status = fast back-to-back, 66MHz, no error
 599     pci_dev->config[0x07] = 0x03; // status = medium devsel
 600     pci_dev->config[0x09] = 0x00; // programming i/f
 601     pci_dev->config[0x0D] = 0x0a; // latency_timer
 602
 603     isa_mmio_setup(&s->bar0, 0x1000000);
 604     pci_register_bar(pci_dev, 0, PCI_BASE_ADDRESS_SPACE_MEMORY, &s->bar0);
 605     isa_mmio_setup(&s->bar1, 0x800000);
 606     pci_register_bar(pci_dev, 1, PCI_BASE_ADDRESS_SPACE_MEMORY, &s->bar1);
 607     return 0;
 608 }
 609
 610 static void ebus_class_init(ObjectClass *klass, void *data)
 611 {
 612     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 613
 614     k->init = pci_ebus_init1;
 615     k->vendor_id = PCI_VENDOR_ID_SUN;
 616     k->device_id = PCI_DEVICE_ID_SUN_EBUS;
 617     k->revision = 0x01;
 618     k->class_id = PCI_CLASS_BRIDGE_OTHER;
 619 }
 620
 621 static const TypeInfo ebus_info = {
 622     .name          = "ebus",
 623     .parent        = TYPE_PCI_DEVICE,
 624     .instance_size = sizeof(EbusState),
 625     .class_init    = ebus_class_init,
 626 };
 627
 628 typedef struct PROMState {
 629     SysBusDevice busdev;
 630     MemoryRegion prom;
 631 } PROMState;
 632
 633 static uint64_t translate_prom_address(void *opaque, uint64_t addr)
 634 {
 635     hwaddr *base_addr = (hwaddr *)opaque;
 636     return addr + *base_addr - PROM_VADDR;
 637 }
 638
 639 /* Boot PROM (OpenBIOS) */
 640 static void prom_init(hwaddr addr, const char *bios_name)
 641 {
 642     DeviceState *dev;
 643     SysBusDevice *s;
 644     char *filename;
 645     int ret;
 646
 647     dev = qdev_create(NULL, "openprom");
 648     qdev_init_nofail(dev);
 649     s = sysbus_from_qdev(dev);
 650
 651     sysbus_mmio_map(s, 0, addr);
 652
 653     /* load boot prom */
 654     if (bios_name == NULL) {
 655         bios_name = PROM_FILENAME;
 656     }
 657     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
 658     if (filename) {
 659         ret = load_elf(filename, translate_prom_address, &addr,
 660                        NULL, NULL, NULL, 1, ELF_MACHINE, 0);
 661         if (ret < 0 || ret > PROM_SIZE_MAX) {
 662             ret = load_image_targphys(filename, addr, PROM_SIZE_MAX);
 663         }
 664         g_free(filename);
 665     } else {
 666         ret = -1;
 667     }
 668     if (ret < 0 || ret > PROM_SIZE_MAX) {
 669         fprintf(stderr, "qemu: could not load prom '%s'\n", bios_name);
 670         exit(1);
 671     }
 672 }
 673
 674 static int prom_init1(SysBusDevice *dev)
 675 {
 676     PROMState *s = FROM_SYSBUS(PROMState, dev);
 677
 678     memory_region_init_ram(&s->prom, "sun4u.prom", PROM_SIZE_MAX);
 679     vmstate_register_ram_global(&s->prom);
 680     memory_region_set_readonly(&s->prom, true);
 681     sysbus_init_mmio(dev, &s->prom);
 682     return 0;
 683 }
 684
 685 static Property prom_properties[] = {
 686     {/* end of property list */},
 687 };
 688
 689 static void prom_class_init(ObjectClass *klass, void *data)
 690 {
 691     DeviceClass *dc = DEVICE_CLASS(klass);
 692     SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
 693
 694     k->init = prom_init1;
 695     dc->props = prom_properties;
 696 }
 697
 698 static const TypeInfo prom_info = {
 699     .name          = "openprom",
 700     .parent        = TYPE_SYS_BUS_DEVICE,
 701     .instance_size = sizeof(PROMState),
 702     .class_init    = prom_class_init,
 703 };
 704
 705
 706 typedef struct RamDevice
 707 {
 708     SysBusDevice busdev;
 709     MemoryRegion ram;
 710     uint64_t size;
 711 } RamDevice;
 712
 713 /* System RAM */
 714 static int ram_init1(SysBusDevice *dev)
 715 {
 716     RamDevice *d = FROM_SYSBUS(RamDevice, dev);
 717
 718     memory_region_init_ram(&d->ram, "sun4u.ram", d->size);
 719     vmstate_register_ram_global(&d->ram);
 720     sysbus_init_mmio(dev, &d->ram);
 721     return 0;
 722 }
 723
 724 static void ram_init(hwaddr addr, ram_addr_t RAM_size)
 725 {
 726     DeviceState *dev;
 727     SysBusDevice *s;
 728     RamDevice *d;
 729
 730     /* allocate RAM */
 731     dev = qdev_create(NULL, "memory");
 732     s = sysbus_from_qdev(dev);
 733
 734     d = FROM_SYSBUS(RamDevice, s);
 735     d->size = RAM_size;
 736     qdev_init_nofail(dev);
 737
 738     sysbus_mmio_map(s, 0, addr);
 739 }
 740
 741 static Property ram_properties[] = {
 742     DEFINE_PROP_UINT64("size", RamDevice, size, 0),
 743     DEFINE_PROP_END_OF_LIST(),
 744 };
 745
 746 static void ram_class_init(ObjectClass *klass, void *data)
 747 {
 748     DeviceClass *dc = DEVICE_CLASS(klass);
 749     SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
 750
 751     k->init = ram_init1;
 752     dc->props = ram_properties;
 753 }
 754
 755 static const TypeInfo ram_info = {
 756     .name          = "memory",
 757     .parent        = TYPE_SYS_BUS_DEVICE,
 758     .instance_size = sizeof(RamDevice),
 759     .class_init    = ram_class_init,
 760 };
 761
 762 static SPARCCPU *cpu_devinit(const char *cpu_model, const struct hwdef *hwdef)
 763 {
 764     SPARCCPU *cpu;
 765     CPUSPARCState *env;
 766     ResetData *reset_info;
 767
 768     uint32_t   tick_frequency = 100*1000000;
 769     uint32_t  stick_frequency = 100*1000000;
 770     uint32_t hstick_frequency = 100*1000000;
 771
 772     if (cpu_model == NULL) {
 773         cpu_model = hwdef->default_cpu_model;
 774     }
 775     cpu = cpu_sparc_init(cpu_model);
 776     if (cpu == NULL) {
 777         fprintf(stderr, "Unable to find Sparc CPU definition\n");
 778         exit(1);
 779     }
 780     env = &cpu->env;
 781
 782     env->tick = cpu_timer_create("tick", cpu, tick_irq,
 783                                   tick_frequency, TICK_NPT_MASK);
 784
 785     env->stick = cpu_timer_create("stick", cpu, stick_irq,
 786                                    stick_frequency, TICK_INT_DIS);
 787
 788     env->hstick = cpu_timer_create("hstick", cpu, hstick_irq,
 789                                     hstick_frequency, TICK_INT_DIS);
 790
 791     reset_info = g_malloc0(sizeof(ResetData));
 792     reset_info->cpu = cpu;
 793     reset_info->prom_addr = hwdef->prom_addr;
 794     qemu_register_reset(main_cpu_reset, reset_info);
 795
 796     return cpu;
 797 }
 798
 799 static void sun4uv_init(MemoryRegion *address_space_mem,
 800                         ram_addr_t RAM_size,
 801                         const char *boot_devices,
 802                         const char *kernel_filename, const char *kernel_cmdline,
 803                         const char *initrd_filename, const char *cpu_model,
 804                         const struct hwdef *hwdef)
 805 {
 806     SPARCCPU *cpu;
 807     M48t59State *nvram;
 808     unsigned int i;
 809     uint64_t initrd_addr, initrd_size, kernel_addr, kernel_size, kernel_entry;
 810     PCIBus *pci_bus, *pci_bus2, *pci_bus3;
 811     ISABus *isa_bus;
 812     qemu_irq *ivec_irqs, *pbm_irqs;
 813     DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
 814     DriveInfo *fd[MAX_FD];
 815     void *fw_cfg;
 816
 817     /* init CPUs */
 818     cpu = cpu_devinit(cpu_model, hwdef);
 819
 820     /* set up devices */
 821     ram_init(0, RAM_size);
 822
 823     prom_init(hwdef->prom_addr, bios_name);
 824
 825     ivec_irqs = qemu_allocate_irqs(cpu_set_ivec_irq, cpu, IVEC_MAX);
 826     pci_bus = pci_apb_init(APB_SPECIAL_BASE, APB_MEM_BASE, ivec_irqs, &pci_bus2,
 827                            &pci_bus3, &pbm_irqs);
 828     pci_vga_init(pci_bus);
 829
 830     // XXX Should be pci_bus3
 831     isa_bus = pci_ebus_init(pci_bus, -1, pbm_irqs);
 832
 833     i = 0;
 834     if (hwdef->console_serial_base) {
 835         serial_mm_init(address_space_mem, hwdef->console_serial_base, 0,
 836                        NULL, 115200, serial_hds[i], DEVICE_BIG_ENDIAN);
 837         i++;
 838     }
 839     for(; i < MAX_SERIAL_PORTS; i++) {
 840         if (serial_hds[i]) {
 841             serial_isa_init(isa_bus, i, serial_hds[i]);
 842         }
 843     }
 844
 845     for(i = 0; i < MAX_PARALLEL_PORTS; i++) {
 846         if (parallel_hds[i]) {
 847             parallel_init(isa_bus, i, parallel_hds[i]);
 848         }
 849     }
 850
 851     for(i = 0; i < nb_nics; i++)
 852         pci_nic_init_nofail(&nd_table[i], "ne2k_pci", NULL);
 853
 854     ide_drive_get(hd, MAX_IDE_BUS);
 855
 856     pci_cmd646_ide_init(pci_bus, hd, 1);
 857
 858     isa_create_simple(isa_bus, "i8042");
 859     for(i = 0; i < MAX_FD; i++) {
 860         fd[i] = drive_get(IF_FLOPPY, 0, i);
 861     }
 862     fdctrl_init_isa(isa_bus, fd);
 863     nvram = m48t59_init_isa(isa_bus, 0x0074, NVRAM_SIZE, 59);
 864
 865     initrd_size = 0;
 866     initrd_addr = 0;
 867     kernel_size = sun4u_load_kernel(kernel_filename, initrd_filename,
 868                                     ram_size, &initrd_size, &initrd_addr,
 869                                     &kernel_addr, &kernel_entry);
 870
 871     sun4u_NVRAM_set_params(nvram, NVRAM_SIZE, "Sun4u", RAM_size, boot_devices,
 872                            kernel_addr, kernel_size,
 873                            kernel_cmdline,
 874                            initrd_addr, initrd_size,
 875                            /* XXX: need an option to load a NVRAM image */
 876                            0,
 877                            graphic_width, graphic_height, graphic_depth,
 878                            (uint8_t *)&nd_table[0].macaddr);
 879
 880     fw_cfg = fw_cfg_init(BIOS_CFG_IOPORT, BIOS_CFG_IOPORT + 1, 0, 0);
 881     fw_cfg_add_i32(fw_cfg, FW_CFG_ID, 1);
 882     fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size);
 883     fw_cfg_add_i16(fw_cfg, FW_CFG_MACHINE_ID, hwdef->machine_id);
 884     fw_cfg_add_i64(fw_cfg, FW_CFG_KERNEL_ADDR, kernel_entry);
 885     fw_cfg_add_i64(fw_cfg, FW_CFG_KERNEL_SIZE, kernel_size);
 886     if (kernel_cmdline) {
 887         fw_cfg_add_i32(fw_cfg, FW_CFG_CMDLINE_SIZE,
 888                        strlen(kernel_cmdline) + 1);
 889         fw_cfg_add_bytes(fw_cfg, FW_CFG_CMDLINE_DATA,
 890                          (uint8_t*)strdup(kernel_cmdline),
 891                          strlen(kernel_cmdline) + 1);
 892     } else {
 893         fw_cfg_add_i32(fw_cfg, FW_CFG_CMDLINE_SIZE, 0);
 894     }
 895     fw_cfg_add_i64(fw_cfg, FW_CFG_INITRD_ADDR, initrd_addr);
 896     fw_cfg_add_i64(fw_cfg, FW_CFG_INITRD_SIZE, initrd_size);
 897     fw_cfg_add_i16(fw_cfg, FW_CFG_BOOT_DEVICE, boot_devices[0]);
 898
 899     fw_cfg_add_i16(fw_cfg, FW_CFG_SPARC64_WIDTH, graphic_width);
 900     fw_cfg_add_i16(fw_cfg, FW_CFG_SPARC64_HEIGHT, graphic_height);
 901     fw_cfg_add_i16(fw_cfg, FW_CFG_SPARC64_DEPTH, graphic_depth);
 902
 903     qemu_register_boot_set(fw_cfg_boot_set, fw_cfg);
 904 }
 905
 906 enum {
 907     sun4u_id = 0,
 908     sun4v_id = 64,
 909     niagara_id,
 910 };
 911
 912 static const struct hwdef hwdefs[] = {
 913     /* Sun4u generic PC-like machine */
 914     {
 915         .default_cpu_model = "TI UltraSparc IIi",
 916         .machine_id = sun4u_id,
 917         .prom_addr = 0x1fff0000000ULL,
 918         .console_serial_base = 0,
 919     },
 920     /* Sun4v generic PC-like machine */
 921     {
 922         .default_cpu_model = "Sun UltraSparc T1",
 923         .machine_id = sun4v_id,
 924         .prom_addr = 0x1fff0000000ULL,
 925         .console_serial_base = 0,
 926     },
 927     /* Sun4v generic Niagara machine */
 928     {
 929         .default_cpu_model = "Sun UltraSparc T1",
 930         .machine_id = niagara_id,
 931         .prom_addr = 0xfff0000000ULL,
 932         .console_serial_base = 0xfff0c2c000ULL,
 933     },
 934 };
 935
 936 /* Sun4u hardware initialisation */
 937 static void sun4u_init(QEMUMachineInitArgs *args)
 938 {
 939     ram_addr_t RAM_size = args->ram_size;
 940     const char *cpu_model = args->cpu_model;
 941     const char *kernel_filename = args->kernel_filename;
 942     const char *kernel_cmdline = args->kernel_cmdline;
 943     const char *initrd_filename = args->initrd_filename;
 944     const char *boot_devices = args->boot_device;
 945     sun4uv_init(get_system_memory(), RAM_size, boot_devices, kernel_filename,
 946                 kernel_cmdline, initrd_filename, cpu_model, &hwdefs[0]);
 947 }
 948
 949 /* Sun4v hardware initialisation */
 950 static void sun4v_init(QEMUMachineInitArgs *args)
 951 {
 952     ram_addr_t RAM_size = args->ram_size;
 953     const char *cpu_model = args->cpu_model;
 954     const char *kernel_filename = args->kernel_filename;
 955     const char *kernel_cmdline = args->kernel_cmdline;
 956     const char *initrd_filename = args->initrd_filename;
 957     const char *boot_devices = args->boot_device;
 958     sun4uv_init(get_system_memory(), RAM_size, boot_devices, kernel_filename,
 959                 kernel_cmdline, initrd_filename, cpu_model, &hwdefs[1]);
 960 }
 961
 962 /* Niagara hardware initialisation */
 963 static void niagara_init(QEMUMachineInitArgs *args)
 964 {
 965     ram_addr_t RAM_size = args->ram_size;
 966     const char *cpu_model = args->cpu_model;
 967     const char *kernel_filename = args->kernel_filename;
 968     const char *kernel_cmdline = args->kernel_cmdline;
 969     const char *initrd_filename = args->initrd_filename;
 970     const char *boot_devices = args->boot_device;
 971     sun4uv_init(get_system_memory(), RAM_size, boot_devices, kernel_filename,
 972                 kernel_cmdline, initrd_filename, cpu_model, &hwdefs[2]);
 973 }
 974
 975 static QEMUMachine sun4u_machine = {
 976     .name = "sun4u",
 977     .desc = "Sun4u platform",
 978     .init = sun4u_init,
 979     .max_cpus = 1, // XXX for now
 980     .is_default = 1,
 981 };
 982
 983 static QEMUMachine sun4v_machine = {
 984     .name = "sun4v",
 985     .desc = "Sun4v platform",
 986     .init = sun4v_init,
 987     .max_cpus = 1, // XXX for now
 988 };
 989
 990 static QEMUMachine niagara_machine = {
 991     .name = "Niagara",
 992     .desc = "Sun4v platform, Niagara",
 993     .init = niagara_init,
 994     .max_cpus = 1, // XXX for now
 995 };
 996
 997 static void sun4u_register_types(void)
 998 {
 999     type_register_static(&ebus_info);
1000     type_register_static(&prom_info);
1001     type_register_static(&ram_info);
1002 }
1003
1004 static void sun4u_machine_init(void)
1005 {
1006     qemu_register_machine(&sun4u_machine);
1007     qemu_register_machine(&sun4v_machine);
1008     qemu_register_machine(&niagara_machine);
1009 }
1010
1011 type_init(sun4u_register_types)
1012 machine_init(sun4u_machine_init);