1 /* 2 * QEMU Motorla 680x0 Macintosh hardware System Emulator 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a copy 5 * of this software and associated documentation files (the "Software"), to deal 6 * in the Software without restriction, including without limitation the rights 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 8 * copies of the Software, and to permit persons to whom the Software is 9 * furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 20 * THE SOFTWARE. 21 */ 22 23 #include "qemu/osdep.h" 24 #include "qemu/units.h" 25 #include "qemu-common.h" 26 #include "qemu/datadir.h" 27 #include "sysemu/sysemu.h" 28 #include "cpu.h" 29 #include "hw/boards.h" 30 #include "hw/or-irq.h" 31 #include "elf.h" 32 #include "hw/loader.h" 33 #include "ui/console.h" 34 #include "hw/char/escc.h" 35 #include "hw/sysbus.h" 36 #include "hw/scsi/esp.h" 37 #include "standard-headers/asm-m68k/bootinfo.h" 38 #include "standard-headers/asm-m68k/bootinfo-mac.h" 39 #include "bootinfo.h" 40 #include "hw/misc/mac_via.h" 41 #include "hw/input/adb.h" 42 #include "hw/nubus/mac-nubus-bridge.h" 43 #include "hw/display/macfb.h" 44 #include "hw/block/swim.h" 45 #include "net/net.h" 46 #include "qapi/error.h" 47 #include "sysemu/qtest.h" 48 #include "sysemu/runstate.h" 49 #include "sysemu/reset.h" 50 #include "migration/vmstate.h" 51 52 #define MACROM_ADDR 0x40800000 53 #define MACROM_SIZE 0x00100000 54 55 #define MACROM_FILENAME "MacROM.bin" 56 57 #define IO_BASE 0x50000000 58 #define IO_SLICE 0x00040000 59 #define IO_SIZE 0x04000000 60 61 #define VIA_BASE (IO_BASE + 0x00000) 62 #define SONIC_PROM_BASE (IO_BASE + 0x08000) 63 #define SONIC_BASE (IO_BASE + 0x0a000) 64 #define SCC_BASE (IO_BASE + 0x0c020) 65 #define ESP_BASE (IO_BASE + 0x10000) 66 #define ESP_PDMA (IO_BASE + 0x10100) 67 #define ASC_BASE (IO_BASE + 0x14000) 68 #define SWIM_BASE (IO_BASE + 0x1E000) 69 70 #define NUBUS_SUPER_SLOT_BASE 0x60000000 71 #define NUBUS_SLOT_BASE 0xf0000000 72 73 #define SONIC_PROM_SIZE 0x1000 74 75 /* 76 * the video base, whereas it a Nubus address, 77 * is needed by the kernel to have early display and 78 * thus provided by the bootloader 79 */ 80 #define VIDEO_BASE 0xf9001000 81 82 #define MAC_CLOCK 3686418 83 84 /* 85 * The GLUE (General Logic Unit) is an Apple custom integrated circuit chip 86 * that performs a variety of functions (RAM management, clock generation, ...). 87 * The GLUE chip receives interrupt requests from various devices, 88 * assign priority to each, and asserts one or more interrupt line to the 89 * CPU. 90 */ 91 92 #define TYPE_GLUE "q800-glue" 93 OBJECT_DECLARE_SIMPLE_TYPE(GLUEState, GLUE) 94 95 struct GLUEState { 96 SysBusDevice parent_obj; 97 M68kCPU *cpu; 98 uint8_t ipr; 99 }; 100 101 static void GLUE_set_irq(void *opaque, int irq, int level) 102 { 103 GLUEState *s = opaque; 104 int i; 105 106 if (level) { 107 s->ipr |= 1 << irq; 108 } else { 109 s->ipr &= ~(1 << irq); 110 } 111 112 for (i = 7; i >= 0; i--) { 113 if ((s->ipr >> i) & 1) { 114 m68k_set_irq_level(s->cpu, i + 1, i + 25); 115 return; 116 } 117 } 118 m68k_set_irq_level(s->cpu, 0, 0); 119 } 120 121 static void glue_reset(DeviceState *dev) 122 { 123 GLUEState *s = GLUE(dev); 124 125 s->ipr = 0; 126 } 127 128 static const VMStateDescription vmstate_glue = { 129 .name = "q800-glue", 130 .version_id = 0, 131 .minimum_version_id = 0, 132 .fields = (VMStateField[]) { 133 VMSTATE_UINT8(ipr, GLUEState), 134 VMSTATE_END_OF_LIST(), 135 }, 136 }; 137 138 /* 139 * If the m68k CPU implemented its inbound irq lines as GPIO lines 140 * rather than via the m68k_set_irq_level() function we would not need 141 * this cpu link property and could instead provide outbound IRQ lines 142 * that the board could wire up to the CPU. 143 */ 144 static Property glue_properties[] = { 145 DEFINE_PROP_LINK("cpu", GLUEState, cpu, TYPE_M68K_CPU, M68kCPU *), 146 DEFINE_PROP_END_OF_LIST(), 147 }; 148 149 static void glue_init(Object *obj) 150 { 151 DeviceState *dev = DEVICE(obj); 152 153 qdev_init_gpio_in(dev, GLUE_set_irq, 8); 154 } 155 156 static void glue_class_init(ObjectClass *klass, void *data) 157 { 158 DeviceClass *dc = DEVICE_CLASS(klass); 159 160 dc->vmsd = &vmstate_glue; 161 dc->reset = glue_reset; 162 device_class_set_props(dc, glue_properties); 163 } 164 165 static const TypeInfo glue_info = { 166 .name = TYPE_GLUE, 167 .parent = TYPE_SYS_BUS_DEVICE, 168 .instance_size = sizeof(GLUEState), 169 .instance_init = glue_init, 170 .class_init = glue_class_init, 171 }; 172 173 static void main_cpu_reset(void *opaque) 174 { 175 M68kCPU *cpu = opaque; 176 CPUState *cs = CPU(cpu); 177 178 cpu_reset(cs); 179 cpu->env.aregs[7] = ldl_phys(cs->as, 0); 180 cpu->env.pc = ldl_phys(cs->as, 4); 181 } 182 183 static uint8_t fake_mac_rom[] = { 184 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 185 186 /* offset: 0xa - mac_reset */ 187 188 /* via2[vDirB] |= VIA2B_vPower */ 189 0x20, 0x7C, 0x50, 0xF0, 0x24, 0x00, /* moveal VIA2_BASE+vDirB,%a0 */ 190 0x10, 0x10, /* moveb %a0@,%d0 */ 191 0x00, 0x00, 0x00, 0x04, /* orib #4,%d0 */ 192 0x10, 0x80, /* moveb %d0,%a0@ */ 193 194 /* via2[vBufB] &= ~VIA2B_vPower */ 195 0x20, 0x7C, 0x50, 0xF0, 0x20, 0x00, /* moveal VIA2_BASE+vBufB,%a0 */ 196 0x10, 0x10, /* moveb %a0@,%d0 */ 197 0x02, 0x00, 0xFF, 0xFB, /* andib #-5,%d0 */ 198 0x10, 0x80, /* moveb %d0,%a0@ */ 199 200 /* while (true) ; */ 201 0x60, 0xFE /* bras [self] */ 202 }; 203 204 static void q800_init(MachineState *machine) 205 { 206 M68kCPU *cpu = NULL; 207 int linux_boot; 208 int32_t kernel_size; 209 uint64_t elf_entry; 210 char *filename; 211 int bios_size; 212 ram_addr_t initrd_base; 213 int32_t initrd_size; 214 MemoryRegion *rom; 215 MemoryRegion *io; 216 MemoryRegion *dp8393x_prom = g_new(MemoryRegion, 1); 217 uint8_t *prom; 218 const int io_slice_nb = (IO_SIZE / IO_SLICE) - 1; 219 int i, checksum; 220 ram_addr_t ram_size = machine->ram_size; 221 const char *kernel_filename = machine->kernel_filename; 222 const char *initrd_filename = machine->initrd_filename; 223 const char *kernel_cmdline = machine->kernel_cmdline; 224 const char *bios_name = machine->firmware ?: MACROM_FILENAME; 225 hwaddr parameters_base; 226 CPUState *cs; 227 DeviceState *dev; 228 DeviceState *via_dev; 229 DeviceState *escc_orgate; 230 SysBusESPState *sysbus_esp; 231 ESPState *esp; 232 SysBusDevice *sysbus; 233 BusState *adb_bus; 234 NubusBus *nubus; 235 DeviceState *glue; 236 DriveInfo *dinfo; 237 238 linux_boot = (kernel_filename != NULL); 239 240 if (ram_size > 1 * GiB) { 241 error_report("Too much memory for this machine: %" PRId64 " MiB, " 242 "maximum 1024 MiB", ram_size / MiB); 243 exit(1); 244 } 245 246 /* init CPUs */ 247 cpu = M68K_CPU(cpu_create(machine->cpu_type)); 248 qemu_register_reset(main_cpu_reset, cpu); 249 250 /* RAM */ 251 memory_region_add_subregion(get_system_memory(), 0, machine->ram); 252 253 /* 254 * Memory from IO_BASE to IO_BASE + IO_SLICE is repeated 255 * from IO_BASE + IO_SLICE to IO_BASE + IO_SIZE 256 */ 257 io = g_new(MemoryRegion, io_slice_nb); 258 for (i = 0; i < io_slice_nb; i++) { 259 char *name = g_strdup_printf("mac_m68k.io[%d]", i + 1); 260 261 memory_region_init_alias(&io[i], NULL, name, get_system_memory(), 262 IO_BASE, IO_SLICE); 263 memory_region_add_subregion(get_system_memory(), 264 IO_BASE + (i + 1) * IO_SLICE, &io[i]); 265 g_free(name); 266 } 267 268 /* IRQ Glue */ 269 glue = qdev_new(TYPE_GLUE); 270 object_property_set_link(OBJECT(glue), "cpu", OBJECT(cpu), &error_abort); 271 sysbus_realize_and_unref(SYS_BUS_DEVICE(glue), &error_fatal); 272 273 /* VIA */ 274 275 via_dev = qdev_new(TYPE_MAC_VIA); 276 dinfo = drive_get(IF_MTD, 0, 0); 277 if (dinfo) { 278 qdev_prop_set_drive(via_dev, "drive", blk_by_legacy_dinfo(dinfo)); 279 } 280 sysbus = SYS_BUS_DEVICE(via_dev); 281 sysbus_realize_and_unref(sysbus, &error_fatal); 282 sysbus_mmio_map(sysbus, 0, VIA_BASE); 283 qdev_connect_gpio_out_named(DEVICE(sysbus), "irq", 0, 284 qdev_get_gpio_in(glue, 0)); 285 qdev_connect_gpio_out_named(DEVICE(sysbus), "irq", 1, 286 qdev_get_gpio_in(glue, 1)); 287 288 289 adb_bus = qdev_get_child_bus(via_dev, "adb.0"); 290 dev = qdev_new(TYPE_ADB_KEYBOARD); 291 qdev_realize_and_unref(dev, adb_bus, &error_fatal); 292 dev = qdev_new(TYPE_ADB_MOUSE); 293 qdev_realize_and_unref(dev, adb_bus, &error_fatal); 294 295 /* MACSONIC */ 296 297 if (nb_nics > 1) { 298 error_report("q800 can only have one ethernet interface"); 299 exit(1); 300 } 301 302 qemu_check_nic_model(&nd_table[0], "dp83932"); 303 304 /* 305 * MacSonic driver needs an Apple MAC address 306 * Valid prefix are: 307 * 00:05:02 Apple 308 * 00:80:19 Dayna Communications, Inc. 309 * 00:A0:40 Apple 310 * 08:00:07 Apple 311 * (Q800 use the last one) 312 */ 313 nd_table[0].macaddr.a[0] = 0x08; 314 nd_table[0].macaddr.a[1] = 0x00; 315 nd_table[0].macaddr.a[2] = 0x07; 316 317 dev = qdev_new("dp8393x"); 318 qdev_set_nic_properties(dev, &nd_table[0]); 319 qdev_prop_set_uint8(dev, "it_shift", 2); 320 qdev_prop_set_bit(dev, "big_endian", true); 321 object_property_set_link(OBJECT(dev), "dma_mr", 322 OBJECT(get_system_memory()), &error_abort); 323 sysbus = SYS_BUS_DEVICE(dev); 324 sysbus_realize_and_unref(sysbus, &error_fatal); 325 sysbus_mmio_map(sysbus, 0, SONIC_BASE); 326 sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in(glue, 2)); 327 328 memory_region_init_rom(dp8393x_prom, NULL, "dp8393x-q800.prom", 329 SONIC_PROM_SIZE, &error_fatal); 330 memory_region_add_subregion(get_system_memory(), SONIC_PROM_BASE, 331 dp8393x_prom); 332 333 /* Add MAC address with valid checksum to PROM */ 334 prom = memory_region_get_ram_ptr(dp8393x_prom); 335 checksum = 0; 336 for (i = 0; i < 6; i++) { 337 prom[i] = revbit8(nd_table[0].macaddr.a[i]); 338 checksum ^= prom[i]; 339 } 340 prom[7] = 0xff - checksum; 341 342 /* SCC */ 343 344 dev = qdev_new(TYPE_ESCC); 345 qdev_prop_set_uint32(dev, "disabled", 0); 346 qdev_prop_set_uint32(dev, "frequency", MAC_CLOCK); 347 qdev_prop_set_uint32(dev, "it_shift", 1); 348 qdev_prop_set_bit(dev, "bit_swap", true); 349 qdev_prop_set_chr(dev, "chrA", serial_hd(0)); 350 qdev_prop_set_chr(dev, "chrB", serial_hd(1)); 351 qdev_prop_set_uint32(dev, "chnBtype", 0); 352 qdev_prop_set_uint32(dev, "chnAtype", 0); 353 sysbus = SYS_BUS_DEVICE(dev); 354 sysbus_realize_and_unref(sysbus, &error_fatal); 355 356 /* Logically OR both its IRQs together */ 357 escc_orgate = DEVICE(object_new(TYPE_OR_IRQ)); 358 object_property_set_int(OBJECT(escc_orgate), "num-lines", 2, &error_fatal); 359 qdev_realize_and_unref(escc_orgate, NULL, &error_fatal); 360 sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in(escc_orgate, 0)); 361 sysbus_connect_irq(sysbus, 1, qdev_get_gpio_in(escc_orgate, 1)); 362 qdev_connect_gpio_out(DEVICE(escc_orgate), 0, qdev_get_gpio_in(glue, 3)); 363 sysbus_mmio_map(sysbus, 0, SCC_BASE); 364 365 /* SCSI */ 366 367 dev = qdev_new(TYPE_SYSBUS_ESP); 368 sysbus_esp = SYSBUS_ESP(dev); 369 esp = &sysbus_esp->esp; 370 esp->dma_memory_read = NULL; 371 esp->dma_memory_write = NULL; 372 esp->dma_opaque = NULL; 373 sysbus_esp->it_shift = 4; 374 esp->dma_enabled = 1; 375 376 sysbus = SYS_BUS_DEVICE(dev); 377 sysbus_realize_and_unref(sysbus, &error_fatal); 378 sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in_named(via_dev, 379 "via2-irq", 380 VIA2_IRQ_SCSI_BIT)); 381 sysbus_connect_irq(sysbus, 1, 382 qdev_get_gpio_in_named(via_dev, "via2-irq", 383 VIA2_IRQ_SCSI_DATA_BIT)); 384 sysbus_mmio_map(sysbus, 0, ESP_BASE); 385 sysbus_mmio_map(sysbus, 1, ESP_PDMA); 386 387 scsi_bus_legacy_handle_cmdline(&esp->bus); 388 389 /* SWIM floppy controller */ 390 391 dev = qdev_new(TYPE_SWIM); 392 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); 393 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, SWIM_BASE); 394 395 /* NuBus */ 396 397 dev = qdev_new(TYPE_MAC_NUBUS_BRIDGE); 398 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); 399 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, NUBUS_SUPER_SLOT_BASE); 400 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 1, NUBUS_SLOT_BASE); 401 402 nubus = MAC_NUBUS_BRIDGE(dev)->bus; 403 404 /* framebuffer in nubus slot #9 */ 405 406 dev = qdev_new(TYPE_NUBUS_MACFB); 407 qdev_prop_set_uint32(dev, "width", graphic_width); 408 qdev_prop_set_uint32(dev, "height", graphic_height); 409 qdev_prop_set_uint8(dev, "depth", graphic_depth); 410 qdev_realize_and_unref(dev, BUS(nubus), &error_fatal); 411 412 cs = CPU(cpu); 413 if (linux_boot) { 414 uint64_t high; 415 kernel_size = load_elf(kernel_filename, NULL, NULL, NULL, 416 &elf_entry, NULL, &high, NULL, 1, 417 EM_68K, 0, 0); 418 if (kernel_size < 0) { 419 error_report("could not load kernel '%s'", kernel_filename); 420 exit(1); 421 } 422 stl_phys(cs->as, 4, elf_entry); /* reset initial PC */ 423 parameters_base = (high + 1) & ~1; 424 425 BOOTINFO1(cs->as, parameters_base, BI_MACHTYPE, MACH_MAC); 426 BOOTINFO1(cs->as, parameters_base, BI_FPUTYPE, FPU_68040); 427 BOOTINFO1(cs->as, parameters_base, BI_MMUTYPE, MMU_68040); 428 BOOTINFO1(cs->as, parameters_base, BI_CPUTYPE, CPU_68040); 429 BOOTINFO1(cs->as, parameters_base, BI_MAC_CPUID, CPUB_68040); 430 BOOTINFO1(cs->as, parameters_base, BI_MAC_MODEL, MAC_MODEL_Q800); 431 BOOTINFO1(cs->as, parameters_base, 432 BI_MAC_MEMSIZE, ram_size >> 20); /* in MB */ 433 BOOTINFO2(cs->as, parameters_base, BI_MEMCHUNK, 0, ram_size); 434 BOOTINFO1(cs->as, parameters_base, BI_MAC_VADDR, VIDEO_BASE); 435 BOOTINFO1(cs->as, parameters_base, BI_MAC_VDEPTH, graphic_depth); 436 BOOTINFO1(cs->as, parameters_base, BI_MAC_VDIM, 437 (graphic_height << 16) | graphic_width); 438 BOOTINFO1(cs->as, parameters_base, BI_MAC_VROW, 439 (graphic_width * graphic_depth + 7) / 8); 440 BOOTINFO1(cs->as, parameters_base, BI_MAC_SCCBASE, SCC_BASE); 441 442 rom = g_malloc(sizeof(*rom)); 443 memory_region_init_ram_ptr(rom, NULL, "m68k_fake_mac.rom", 444 sizeof(fake_mac_rom), fake_mac_rom); 445 memory_region_set_readonly(rom, true); 446 memory_region_add_subregion(get_system_memory(), MACROM_ADDR, rom); 447 448 if (kernel_cmdline) { 449 BOOTINFOSTR(cs->as, parameters_base, BI_COMMAND_LINE, 450 kernel_cmdline); 451 } 452 453 /* load initrd */ 454 if (initrd_filename) { 455 initrd_size = get_image_size(initrd_filename); 456 if (initrd_size < 0) { 457 error_report("could not load initial ram disk '%s'", 458 initrd_filename); 459 exit(1); 460 } 461 462 initrd_base = (ram_size - initrd_size) & TARGET_PAGE_MASK; 463 load_image_targphys(initrd_filename, initrd_base, 464 ram_size - initrd_base); 465 BOOTINFO2(cs->as, parameters_base, BI_RAMDISK, initrd_base, 466 initrd_size); 467 } else { 468 initrd_base = 0; 469 initrd_size = 0; 470 } 471 BOOTINFO0(cs->as, parameters_base, BI_LAST); 472 } else { 473 uint8_t *ptr; 474 /* allocate and load BIOS */ 475 rom = g_malloc(sizeof(*rom)); 476 memory_region_init_rom(rom, NULL, "m68k_mac.rom", MACROM_SIZE, 477 &error_abort); 478 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); 479 memory_region_add_subregion(get_system_memory(), MACROM_ADDR, rom); 480 481 /* Load MacROM binary */ 482 if (filename) { 483 bios_size = load_image_targphys(filename, MACROM_ADDR, MACROM_SIZE); 484 g_free(filename); 485 } else { 486 bios_size = -1; 487 } 488 489 /* Remove qtest_enabled() check once firmware files are in the tree */ 490 if (!qtest_enabled()) { 491 if (bios_size < 0 || bios_size > MACROM_SIZE) { 492 error_report("could not load MacROM '%s'", bios_name); 493 exit(1); 494 } 495 496 ptr = rom_ptr(MACROM_ADDR, MACROM_SIZE); 497 stl_phys(cs->as, 0, ldl_p(ptr)); /* reset initial SP */ 498 stl_phys(cs->as, 4, 499 MACROM_ADDR + ldl_p(ptr + 4)); /* reset initial PC */ 500 } 501 } 502 } 503 504 static void q800_machine_class_init(ObjectClass *oc, void *data) 505 { 506 MachineClass *mc = MACHINE_CLASS(oc); 507 mc->desc = "Macintosh Quadra 800"; 508 mc->init = q800_init; 509 mc->default_cpu_type = M68K_CPU_TYPE_NAME("m68040"); 510 mc->max_cpus = 1; 511 mc->block_default_type = IF_SCSI; 512 mc->default_ram_id = "m68k_mac.ram"; 513 } 514 515 static const TypeInfo q800_machine_typeinfo = { 516 .name = MACHINE_TYPE_NAME("q800"), 517 .parent = TYPE_MACHINE, 518 .class_init = q800_machine_class_init, 519 }; 520 521 static void q800_machine_register_types(void) 522 { 523 type_register_static(&q800_machine_typeinfo); 524 type_register_static(&glue_info); 525 } 526 527 type_init(q800_machine_register_types) 528