hw/ppc_chrp.c

   1 /*
   2  * QEMU PPC CHRP/PMAC hardware System Emulator
   3  *
   4  * Copyright (c) 2004 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 "vl.h"
  25
  26 #define BIOS_FILENAME "ppc_rom.bin"
  27 #define VGABIOS_FILENAME "video.x"
  28 #define NVRAM_SIZE        0x2000
  29
  30 #define KERNEL_LOAD_ADDR 0x01000000
  31 #define INITRD_LOAD_ADDR 0x01800000
  32
  33 /* MacIO devices (mapped inside the MacIO address space): CUDA, DBDMA,
  34    NVRAM */
  35
  36 static int dbdma_mem_index;
  37 static int cuda_mem_index;
  38 static int ide0_mem_index = -1;
  39 static int ide1_mem_index = -1;
  40 static int openpic_mem_index = -1;
  41 static int heathrow_pic_mem_index = -1;
  42 static int macio_nvram_mem_index = -1;
  43
  44 /* DBDMA: currently no op - should suffice right now */
  45
  46 static void dbdma_writeb (void *opaque, target_phys_addr_t addr, uint32_t value)
  47 {
  48     printf("%s: 0x%08x <= 0x%08x\n", __func__, addr, value);
  49 }
  50
  51 static void dbdma_writew (void *opaque, target_phys_addr_t addr, uint32_t value)
  52 {
  53 }
  54
  55 static void dbdma_writel (void *opaque, target_phys_addr_t addr, uint32_t value)
  56 {
  57 }
  58
  59 static uint32_t dbdma_readb (void *opaque, target_phys_addr_t addr)
  60 {
  61     printf("%s: 0x%08x => 0x00000000\n", __func__, addr);
  62     return 0;
  63 }
  64
  65 static uint32_t dbdma_readw (void *opaque, target_phys_addr_t addr)
  66 {
  67     return 0;
  68 }
  69
  70 static uint32_t dbdma_readl (void *opaque, target_phys_addr_t addr)
  71 {
  72     return 0;
  73 }
  74
  75 static CPUWriteMemoryFunc *dbdma_write[] = {
  76     &dbdma_writeb,
  77     &dbdma_writew,
  78     &dbdma_writel,
  79 };
  80
  81 static CPUReadMemoryFunc *dbdma_read[] = {
  82     &dbdma_readb,
  83     &dbdma_readw,
  84     &dbdma_readl,
  85 };
  86
  87 /* macio style NVRAM device */
  88 typedef struct MacIONVRAMState {
  89     uint8_t data[0x2000];
  90 } MacIONVRAMState;
  91
  92 static void macio_nvram_writeb (void *opaque, target_phys_addr_t addr, uint32_t value)
  93 {
  94     MacIONVRAMState *s = opaque;
  95     addr = (addr >> 4) & 0x1fff;
  96     s->data[addr] = value;
  97     //    printf("macio_nvram_writeb %04x = %02x\n", addr, value);
  98 }
  99
 100 static uint32_t macio_nvram_readb (void *opaque, target_phys_addr_t addr)
 101 {
 102     MacIONVRAMState *s = opaque;
 103     uint32_t value;
 104
 105     addr = (addr >> 4) & 0x1fff;
 106     value = s->data[addr];
 107     //    printf("macio_nvram_readb %04x = %02x\n", addr, value);
 108     return value;
 109 }
 110
 111 static CPUWriteMemoryFunc *macio_nvram_write[] = {
 112     &macio_nvram_writeb,
 113     &macio_nvram_writeb,
 114     &macio_nvram_writeb,
 115 };
 116
 117 static CPUReadMemoryFunc *macio_nvram_read[] = {
 118     &macio_nvram_readb,
 119     &macio_nvram_readb,
 120     &macio_nvram_readb,
 121 };
 122
 123 static MacIONVRAMState *macio_nvram_init(void)
 124 {
 125     MacIONVRAMState *s;
 126     s = qemu_mallocz(sizeof(MacIONVRAMState));
 127     if (!s)
 128         return NULL;
 129     macio_nvram_mem_index = cpu_register_io_memory(0, macio_nvram_read,
 130                                                    macio_nvram_write, s);
 131     return s;
 132 }
 133
 134 static void macio_map(PCIDevice *pci_dev, int region_num,
 135                       uint32_t addr, uint32_t size, int type)
 136 {
 137     if (heathrow_pic_mem_index >= 0) {
 138         cpu_register_physical_memory(addr + 0x00000, 0x1000,
 139                                      heathrow_pic_mem_index);
 140     }
 141     cpu_register_physical_memory(addr + 0x08000, 0x1000, dbdma_mem_index);
 142     cpu_register_physical_memory(addr + 0x16000, 0x2000, cuda_mem_index);
 143     if (ide0_mem_index >= 0)
 144         cpu_register_physical_memory(addr + 0x1f000, 0x1000, ide0_mem_index);
 145     if (ide1_mem_index >= 0)
 146         cpu_register_physical_memory(addr + 0x20000, 0x1000, ide1_mem_index);
 147     if (openpic_mem_index >= 0) {
 148         cpu_register_physical_memory(addr + 0x40000, 0x40000,
 149                                      openpic_mem_index);
 150     }
 151     if (macio_nvram_mem_index >= 0)
 152         cpu_register_physical_memory(addr + 0x60000, 0x20000, macio_nvram_mem_index);
 153 }
 154
 155 static void macio_init(PCIBus *bus, int device_id)
 156 {
 157     PCIDevice *d;
 158
 159     d = pci_register_device(bus, "macio", sizeof(PCIDevice),
 160                             -1, NULL, NULL);
 161     /* Note: this code is strongly inspirated from the corresponding code
 162        in PearPC */
 163     d->config[0x00] = 0x6b; // vendor_id
 164     d->config[0x01] = 0x10;
 165     d->config[0x02] = device_id;
 166     d->config[0x03] = device_id >> 8;
 167
 168     d->config[0x0a] = 0x00; // class_sub = pci2pci
 169     d->config[0x0b] = 0xff; // class_base = bridge
 170     d->config[0x0e] = 0x00; // header_type
 171
 172     d->config[0x3d] = 0x01; // interrupt on pin 1
 173
 174     dbdma_mem_index = cpu_register_io_memory(0, dbdma_read, dbdma_write, NULL);
 175
 176     pci_register_io_region(d, 0, 0x80000,
 177                            PCI_ADDRESS_SPACE_MEM, macio_map);
 178 }
 179
 180 /* UniN device */
 181 static void unin_writel (void *opaque, target_phys_addr_t addr, uint32_t value)
 182 {
 183 }
 184
 185 static uint32_t unin_readl (void *opaque, target_phys_addr_t addr)
 186 {
 187     return 0;
 188 }
 189
 190 static CPUWriteMemoryFunc *unin_write[] = {
 191     &unin_writel,
 192     &unin_writel,
 193     &unin_writel,
 194 };
 195
 196 static CPUReadMemoryFunc *unin_read[] = {
 197     &unin_readl,
 198     &unin_readl,
 199     &unin_readl,
 200 };
 201
 202 /* temporary frame buffer OSI calls for the video.x driver. The right
 203    solution is to modify the driver to use VGA PCI I/Os */
 204 static int vga_osi_call(CPUState *env)
 205 {
 206     static int vga_vbl_enabled;
 207     int linesize;
 208
 209     //    printf("osi_call R5=%d\n", env->gpr[5]);
 210
 211     /* same handler as PearPC, coming from the original MOL video
 212        driver. */
 213     switch(env->gpr[5]) {
 214     case 4:
 215         break;
 216     case 28: /* set_vmode */
 217         if (env->gpr[6] != 1 || env->gpr[7] != 0)
 218             env->gpr[3] = 1;
 219         else
 220             env->gpr[3] = 0;
 221         break;
 222     case 29: /* get_vmode_info */
 223         if (env->gpr[6] != 0) {
 224             if (env->gpr[6] != 1 || env->gpr[7] != 0) {
 225                 env->gpr[3] = 1;
 226                 break;
 227             }
 228         }
 229         env->gpr[3] = 0;
 230         env->gpr[4] = (1 << 16) | 1; /* num_vmodes, cur_vmode */
 231         env->gpr[5] = (1 << 16) | 0; /* num_depths, cur_depth_mode */
 232         env->gpr[6] = (graphic_width << 16) | graphic_height; /* w, h */
 233         env->gpr[7] = 85 << 16; /* refresh rate */
 234         env->gpr[8] = (graphic_depth + 7) & ~7; /* depth (round to byte) */
 235         linesize = ((graphic_depth + 7) >> 3) * graphic_width;
 236         linesize = (linesize + 3) & ~3;
 237         env->gpr[9] = (linesize << 16) | 0; /* row_bytes, offset */
 238         break;
 239     case 31: /* set_video power */
 240         env->gpr[3] = 0;
 241         break;
 242     case 39: /* video_ctrl */
 243         if (env->gpr[6] == 0 || env->gpr[6] == 1)
 244             vga_vbl_enabled = env->gpr[6];
 245         env->gpr[3] = 0;
 246         break;
 247     case 47:
 248         break;
 249     case 59: /* set_color */
 250         /* R6 = index, R7 = RGB */
 251         env->gpr[3] = 0;
 252         break;
 253     case 64: /* get color */
 254         /* R6 = index */
 255         env->gpr[3] = 0;
 256         break;
 257     case 116: /* set hwcursor */
 258         /* R6 = x, R7 = y, R8 = visible, R9 = data */
 259         break;
 260     default:
 261         fprintf(stderr, "unsupported OSI call R5=%08x\n", env->gpr[5]);
 262         break;
 263     }
 264     return 1; /* osi_call handled */
 265 }
 266
 267 /* XXX: suppress that */
 268 static void pic_irq_request(void *opaque, int level)
 269 {
 270 }
 271
 272 static uint8_t nvram_chksum(const uint8_t *buf, int n)
 273 {
 274     int sum, i;
 275     sum = 0;
 276     for(i = 0; i < n; i++)
 277         sum += buf[i];
 278     return (sum & 0xff) + (sum >> 8);
 279 }
 280
 281 /* set a free Mac OS NVRAM partition */
 282 void pmac_format_nvram_partition(uint8_t *buf, int len)
 283 {
 284     char partition_name[12] = "wwwwwwwwwwww";
 285
 286     buf[0] = 0x7f; /* free partition magic */
 287     buf[1] = 0; /* checksum */
 288     buf[2] = len >> 8;
 289     buf[3] = len;
 290     memcpy(buf + 4, partition_name, 12);
 291     buf[1] = nvram_chksum(buf, 16);
 292 }
 293
 294 /* PowerPC CHRP hardware initialisation */
 295 static void ppc_chrp_init(int ram_size, int vga_ram_size, int boot_device,
 296                           DisplayState *ds, const char **fd_filename,
 297                           int snapshot,
 298                           const char *kernel_filename,
 299                           const char *kernel_cmdline,
 300                           const char *initrd_filename,
 301                           int is_heathrow)
 302 {
 303     CPUState *env;
 304     char buf[1024];
 305     SetIRQFunc *set_irq;
 306     void *pic;
 307     m48t59_t *nvram;
 308     int PPC_io_memory, unin_memory;
 309     int linux_boot, i;
 310     unsigned long bios_offset, vga_bios_offset;
 311     uint32_t kernel_base, kernel_size, initrd_base, initrd_size;
 312     ppc_def_t *def;
 313     PCIBus *pci_bus;
 314     const char *arch_name;
 315     int vga_bios_size, bios_size;
 316
 317     linux_boot = (kernel_filename != NULL);
 318
 319     /* init CPUs */
 320     env = cpu_init();
 321     register_savevm("cpu", 0, 3, cpu_save, cpu_load, env);
 322
 323     /* Register CPU as a 74x/75x */
 324     /* XXX: CPU model (or PVR) should be provided on command line */
 325     //    ppc_find_by_name("750gx", &def); // Linux boot OK
 326     //    ppc_find_by_name("750fx", &def); // Linux boot OK
 327     /* Linux does not boot on 750cxe (and probably other 750cx based)
 328      * because it assumes it has 8 IBAT & DBAT pairs as it only have 4.
 329      */
 330     //    ppc_find_by_name("750cxe", &def);
 331     //    ppc_find_by_name("750p", &def);
 332     //    ppc_find_by_name("740p", &def);
 333     ppc_find_by_name("750", &def);
 334     //    ppc_find_by_name("740", &def);
 335     //    ppc_find_by_name("G3", &def);
 336     //    ppc_find_by_name("604r", &def);
 337     //    ppc_find_by_name("604e", &def);
 338     //    ppc_find_by_name("604", &def);
 339     if (def == NULL) {
 340         cpu_abort(env, "Unable to find PowerPC CPU definition\n");
 341     }
 342     cpu_ppc_register(env, def);
 343
 344     /* Set time-base frequency to 100 Mhz */
 345     cpu_ppc_tb_init(env, 100UL * 1000UL * 1000UL);
 346
 347     env->osi_call = vga_osi_call;
 348
 349     /* allocate RAM */
 350     cpu_register_physical_memory(0, ram_size, IO_MEM_RAM);
 351
 352     /* allocate and load BIOS */
 353     bios_offset = ram_size + vga_ram_size;
 354     snprintf(buf, sizeof(buf), "%s/%s", bios_dir, BIOS_FILENAME);
 355     bios_size = load_image(buf, phys_ram_base + bios_offset);
 356     if (bios_size < 0 || bios_size > BIOS_SIZE) {
 357         fprintf(stderr, "qemu: could not load PowerPC bios '%s'\n", buf);
 358         exit(1);
 359     }
 360     bios_size = (bios_size + 0xfff) & ~0xfff;
 361     cpu_register_physical_memory((uint32_t)(-bios_size),
 362                                  bios_size, bios_offset | IO_MEM_ROM);
 363
 364     /* allocate and load VGA BIOS */
 365     vga_bios_offset = bios_offset + bios_size;
 366     snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_FILENAME);
 367     vga_bios_size = load_image(buf, phys_ram_base + vga_bios_offset + 8);
 368     if (vga_bios_size < 0) {
 369         /* if no bios is present, we can still work */
 370         fprintf(stderr, "qemu: warning: could not load VGA bios '%s'\n", buf);
 371         vga_bios_size = 0;
 372     } else {
 373         /* set a specific header (XXX: find real Apple format for NDRV
 374            drivers) */
 375         phys_ram_base[vga_bios_offset] = 'N';
 376         phys_ram_base[vga_bios_offset + 1] = 'D';
 377         phys_ram_base[vga_bios_offset + 2] = 'R';
 378         phys_ram_base[vga_bios_offset + 3] = 'V';
 379         cpu_to_be32w((uint32_t *)(phys_ram_base + vga_bios_offset + 4),
 380                      vga_bios_size);
 381         vga_bios_size += 8;
 382     }
 383     vga_bios_size = (vga_bios_size + 0xfff) & ~0xfff;
 384
 385     if (linux_boot) {
 386         kernel_base = KERNEL_LOAD_ADDR;
 387         /* now we can load the kernel */
 388         kernel_size = load_image(kernel_filename, phys_ram_base + kernel_base);
 389         if (kernel_size < 0) {
 390             fprintf(stderr, "qemu: could not load kernel '%s'\n",
 391                     kernel_filename);
 392             exit(1);
 393         }
 394         /* load initrd */
 395         if (initrd_filename) {
 396             initrd_base = INITRD_LOAD_ADDR;
 397             initrd_size = load_image(initrd_filename,
 398                                      phys_ram_base + initrd_base);
 399             if (initrd_size < 0) {
 400                 fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
 401                         initrd_filename);
 402                 exit(1);
 403             }
 404         } else {
 405             initrd_base = 0;
 406             initrd_size = 0;
 407         }
 408         boot_device = 'm';
 409     } else {
 410         kernel_base = 0;
 411         kernel_size = 0;
 412         initrd_base = 0;
 413         initrd_size = 0;
 414     }
 415
 416     if (is_heathrow) {
 417         isa_mem_base = 0x80000000;
 418         pci_bus = pci_grackle_init(0xfec00000);
 419
 420         /* Register 2 MB of ISA IO space */
 421         PPC_io_memory = cpu_register_io_memory(0, PPC_io_read, PPC_io_write, NULL);
 422         cpu_register_physical_memory(0xfe000000, 0x00200000, PPC_io_memory);
 423
 424         /* init basic PC hardware */
 425         vga_initialize(pci_bus, ds, phys_ram_base + ram_size,
 426                        ram_size, vga_ram_size,
 427                        vga_bios_offset, vga_bios_size);
 428         pic = heathrow_pic_init(&heathrow_pic_mem_index);
 429         set_irq = heathrow_pic_set_irq;
 430         pci_set_pic(pci_bus, set_irq, pic);
 431
 432         /* XXX: suppress that */
 433         isa_pic = pic_init(pic_irq_request, NULL);
 434
 435         /* XXX: use Mac Serial port */
 436         serial_init(&pic_set_irq_new, isa_pic, 0x3f8, 4, serial_hds[0]);
 437
 438         for(i = 0; i < nb_nics; i++) {
 439             if (!nd_table[i].model)
 440                 nd_table[i].model = "ne2k_pci";
 441             pci_nic_init(pci_bus, &nd_table[i]);
 442         }
 443
 444         pci_cmd646_ide_init(pci_bus, &bs_table[0], 0);
 445
 446         /* cuda also initialize ADB */
 447         cuda_mem_index = cuda_init(set_irq, pic, 0x12);
 448
 449         adb_kbd_init(&adb_bus);
 450         adb_mouse_init(&adb_bus);
 451
 452         {
 453             MacIONVRAMState *nvr;
 454             nvr = macio_nvram_init();
 455             pmac_format_nvram_partition(nvr->data, 0x2000);
 456         }
 457
 458         macio_init(pci_bus, 0x0017);
 459
 460         nvram = m48t59_init(8, 0xFFF04000, 0x0074, NVRAM_SIZE, 59);
 461
 462         arch_name = "HEATHROW";
 463     } else {
 464         isa_mem_base = 0x80000000;
 465         pci_bus = pci_pmac_init();
 466
 467         /* Register 8 MB of ISA IO space */
 468         PPC_io_memory = cpu_register_io_memory(0, PPC_io_read, PPC_io_write, NULL);
 469         cpu_register_physical_memory(0xF2000000, 0x00800000, PPC_io_memory);
 470
 471         /* UniN init */
 472         unin_memory = cpu_register_io_memory(0, unin_read, unin_write, NULL);
 473         cpu_register_physical_memory(0xf8000000, 0x00001000, unin_memory);
 474
 475         /* init basic PC hardware */
 476         vga_initialize(pci_bus, ds, phys_ram_base + ram_size,
 477                        ram_size, vga_ram_size,
 478                        vga_bios_offset, vga_bios_size);
 479         pic = openpic_init(NULL, &openpic_mem_index, 1, &env);
 480         set_irq = openpic_set_irq;
 481         pci_set_pic(pci_bus, set_irq, pic);
 482
 483         /* XXX: suppress that */
 484         isa_pic = pic_init(pic_irq_request, NULL);
 485
 486         /* XXX: use Mac Serial port */
 487         serial_init(&pic_set_irq_new, isa_pic, 0x3f8, 4, serial_hds[0]);
 488
 489         for(i = 0; i < nb_nics; i++) {
 490             pci_ne2000_init(pci_bus, &nd_table[i]);
 491         }
 492
 493 #if 1
 494         ide0_mem_index = pmac_ide_init(&bs_table[0], set_irq, pic, 0x13);
 495         ide1_mem_index = pmac_ide_init(&bs_table[2], set_irq, pic, 0x14);
 496 #else
 497         pci_cmd646_ide_init(pci_bus, &bs_table[0], 0);
 498 #endif
 499         /* cuda also initialize ADB */
 500         cuda_mem_index = cuda_init(set_irq, pic, 0x19);
 501
 502         adb_kbd_init(&adb_bus);
 503         adb_mouse_init(&adb_bus);
 504
 505         macio_init(pci_bus, 0x0022);
 506
 507         nvram = m48t59_init(8, 0xFFF04000, 0x0074, NVRAM_SIZE, 59);
 508
 509         arch_name = "MAC99";
 510     }
 511
 512     if (graphic_depth != 15 && graphic_depth != 32 && graphic_depth != 8)
 513         graphic_depth = 15;
 514
 515     PPC_NVRAM_set_params(nvram, NVRAM_SIZE, arch_name, ram_size, boot_device,
 516                          kernel_base, kernel_size,
 517                          kernel_cmdline,
 518                          initrd_base, initrd_size,
 519                          /* XXX: need an option to load a NVRAM image */
 520                          0,
 521                          graphic_width, graphic_height, graphic_depth);
 522     /* No PCI init: the BIOS will do it */
 523
 524     /* Special port to get debug messages from Open-Firmware */
 525     register_ioport_write(0x0F00, 4, 1, &PPC_debug_write, NULL);
 526 }
 527
 528 static void ppc_core99_init(int ram_size, int vga_ram_size, int boot_device,
 529                             DisplayState *ds, const char **fd_filename,
 530                             int snapshot,
 531                             const char *kernel_filename,
 532                             const char *kernel_cmdline,
 533                             const char *initrd_filename)
 534 {
 535     ppc_chrp_init(ram_size, vga_ram_size, boot_device,
 536                   ds, fd_filename, snapshot,
 537                   kernel_filename, kernel_cmdline,
 538                   initrd_filename, 0);
 539 }
 540
 541 static void ppc_heathrow_init(int ram_size, int vga_ram_size, int boot_device,
 542                               DisplayState *ds, const char **fd_filename,
 543                               int snapshot,
 544                               const char *kernel_filename,
 545                               const char *kernel_cmdline,
 546                               const char *initrd_filename)
 547 {
 548     ppc_chrp_init(ram_size, vga_ram_size, boot_device,
 549                   ds, fd_filename, snapshot,
 550                   kernel_filename, kernel_cmdline,
 551                   initrd_filename, 1);
 552 }
 553
 554 QEMUMachine core99_machine = {
 555     "mac99",
 556     "Mac99 based PowerMAC",
 557     ppc_core99_init,
 558 };
 559
 560 QEMUMachine heathrow_machine = {
 561     "g3bw",
 562     "Heathrow based PowerMAC",
 563     ppc_heathrow_init,
 564 };