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 "sysemu/sysemu.h" 27 #include "cpu.h" 28 #include "hw/hw.h" 29 #include "hw/boards.h" 30 #include "hw/irq.h" 31 #include "elf.h" 32 #include "hw/loader.h" 33 #include "ui/console.h" 34 #include "exec/address-spaces.h" 35 #include "hw/char/escc.h" 36 #include "hw/sysbus.h" 37 #include "hw/scsi/esp.h" 38 #include "bootinfo.h" 39 #include "hw/misc/mac_via.h" 40 #include "hw/input/adb.h" 41 #include "hw/nubus/mac-nubus-bridge.h" 42 #include "hw/display/macfb.h" 43 #include "hw/block/swim.h" 44 #include "net/net.h" 45 #include "qapi/error.h" 46 #include "sysemu/qtest.h" 47 #include "sysemu/runstate.h" 48 #include "sysemu/reset.h" 49 50 #define MACROM_ADDR 0x40800000 51 #define MACROM_SIZE 0x00100000 52 53 #define MACROM_FILENAME "MacROM.bin" 54 55 #define Q800_MACHINE_ID 35 56 #define Q800_CPU_ID (1 << 2) 57 #define Q800_FPU_ID (1 << 2) 58 #define Q800_MMU_ID (1 << 2) 59 60 #define MACH_MAC 3 61 #define Q800_MAC_CPU_ID 2 62 63 #define IO_BASE 0x50000000 64 #define IO_SLICE 0x00040000 65 #define IO_SIZE 0x04000000 66 67 #define VIA_BASE (IO_BASE + 0x00000) 68 #define SONIC_PROM_BASE (IO_BASE + 0x08000) 69 #define SONIC_BASE (IO_BASE + 0x0a000) 70 #define SCC_BASE (IO_BASE + 0x0c020) 71 #define ESP_BASE (IO_BASE + 0x10000) 72 #define ESP_PDMA (IO_BASE + 0x10100) 73 #define ASC_BASE (IO_BASE + 0x14000) 74 #define SWIM_BASE (IO_BASE + 0x1E000) 75 76 #define NUBUS_SUPER_SLOT_BASE 0x60000000 77 #define NUBUS_SLOT_BASE 0xf0000000 78 79 /* 80 * the video base, whereas it a Nubus address, 81 * is needed by the kernel to have early display and 82 * thus provided by the bootloader 83 */ 84 #define VIDEO_BASE 0xf9001000 85 86 #define MAC_CLOCK 3686418 87 88 /* 89 * The GLUE (General Logic Unit) is an Apple custom integrated circuit chip 90 * that performs a variety of functions (RAM management, clock generation, ...). 91 * The GLUE chip receives interrupt requests from various devices, 92 * assign priority to each, and asserts one or more interrupt line to the 93 * CPU. 94 */ 95 96 typedef struct { 97 M68kCPU *cpu; 98 uint8_t ipr; 99 } GLUEState; 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 main_cpu_reset(void *opaque) 122 { 123 M68kCPU *cpu = opaque; 124 CPUState *cs = CPU(cpu); 125 126 cpu_reset(cs); 127 cpu->env.aregs[7] = ldl_phys(cs->as, 0); 128 cpu->env.pc = ldl_phys(cs->as, 4); 129 } 130 131 static uint8_t fake_mac_rom[] = { 132 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 133 134 /* offset: 0xa - mac_reset */ 135 136 /* via2[vDirB] |= VIA2B_vPower */ 137 0x20, 0x7C, 0x50, 0xF0, 0x24, 0x00, /* moveal VIA2_BASE+vDirB,%a0 */ 138 0x10, 0x10, /* moveb %a0@,%d0 */ 139 0x00, 0x00, 0x00, 0x04, /* orib #4,%d0 */ 140 0x10, 0x80, /* moveb %d0,%a0@ */ 141 142 /* via2[vBufB] &= ~VIA2B_vPower */ 143 0x20, 0x7C, 0x50, 0xF0, 0x20, 0x00, /* moveal VIA2_BASE+vBufB,%a0 */ 144 0x10, 0x10, /* moveb %a0@,%d0 */ 145 0x02, 0x00, 0xFF, 0xFB, /* andib #-5,%d0 */ 146 0x10, 0x80, /* moveb %d0,%a0@ */ 147 148 /* while (true) ; */ 149 0x60, 0xFE /* bras [self] */ 150 }; 151 152 static void q800_init(MachineState *machine) 153 { 154 M68kCPU *cpu = NULL; 155 int linux_boot; 156 int32_t kernel_size; 157 uint64_t elf_entry; 158 char *filename; 159 int bios_size; 160 ram_addr_t initrd_base; 161 int32_t initrd_size; 162 MemoryRegion *rom; 163 MemoryRegion *io; 164 const int io_slice_nb = (IO_SIZE / IO_SLICE) - 1; 165 int i; 166 ram_addr_t ram_size = machine->ram_size; 167 const char *kernel_filename = machine->kernel_filename; 168 const char *initrd_filename = machine->initrd_filename; 169 const char *kernel_cmdline = machine->kernel_cmdline; 170 hwaddr parameters_base; 171 CPUState *cs; 172 DeviceState *dev; 173 DeviceState *via_dev; 174 SysBusESPState *sysbus_esp; 175 ESPState *esp; 176 SysBusDevice *sysbus; 177 BusState *adb_bus; 178 NubusBus *nubus; 179 GLUEState *irq; 180 qemu_irq *pic; 181 DriveInfo *dinfo; 182 183 linux_boot = (kernel_filename != NULL); 184 185 if (ram_size > 1 * GiB) { 186 error_report("Too much memory for this machine: %" PRId64 " MiB, " 187 "maximum 1024 MiB", ram_size / MiB); 188 exit(1); 189 } 190 191 /* init CPUs */ 192 cpu = M68K_CPU(cpu_create(machine->cpu_type)); 193 qemu_register_reset(main_cpu_reset, cpu); 194 195 /* RAM */ 196 memory_region_add_subregion(get_system_memory(), 0, machine->ram); 197 198 /* 199 * Memory from IO_BASE to IO_BASE + IO_SLICE is repeated 200 * from IO_BASE + IO_SLICE to IO_BASE + IO_SIZE 201 */ 202 io = g_new(MemoryRegion, io_slice_nb); 203 for (i = 0; i < io_slice_nb; i++) { 204 char *name = g_strdup_printf("mac_m68k.io[%d]", i + 1); 205 206 memory_region_init_alias(&io[i], NULL, name, get_system_memory(), 207 IO_BASE, IO_SLICE); 208 memory_region_add_subregion(get_system_memory(), 209 IO_BASE + (i + 1) * IO_SLICE, &io[i]); 210 g_free(name); 211 } 212 213 /* IRQ Glue */ 214 215 irq = g_new0(GLUEState, 1); 216 irq->cpu = cpu; 217 pic = qemu_allocate_irqs(GLUE_set_irq, irq, 8); 218 219 /* VIA */ 220 221 via_dev = qdev_new(TYPE_MAC_VIA); 222 dinfo = drive_get(IF_MTD, 0, 0); 223 if (dinfo) { 224 qdev_prop_set_drive(via_dev, "drive", blk_by_legacy_dinfo(dinfo)); 225 } 226 sysbus = SYS_BUS_DEVICE(via_dev); 227 sysbus_realize_and_unref(sysbus, &error_fatal); 228 sysbus_mmio_map(sysbus, 0, VIA_BASE); 229 qdev_connect_gpio_out_named(DEVICE(sysbus), "irq", 0, pic[0]); 230 qdev_connect_gpio_out_named(DEVICE(sysbus), "irq", 1, pic[1]); 231 232 233 adb_bus = qdev_get_child_bus(via_dev, "adb.0"); 234 dev = qdev_new(TYPE_ADB_KEYBOARD); 235 qdev_realize_and_unref(dev, adb_bus, &error_fatal); 236 dev = qdev_new(TYPE_ADB_MOUSE); 237 qdev_realize_and_unref(dev, adb_bus, &error_fatal); 238 239 /* MACSONIC */ 240 241 if (nb_nics > 1) { 242 error_report("q800 can only have one ethernet interface"); 243 exit(1); 244 } 245 246 qemu_check_nic_model(&nd_table[0], "dp83932"); 247 248 /* 249 * MacSonic driver needs an Apple MAC address 250 * Valid prefix are: 251 * 00:05:02 Apple 252 * 00:80:19 Dayna Communications, Inc. 253 * 00:A0:40 Apple 254 * 08:00:07 Apple 255 * (Q800 use the last one) 256 */ 257 nd_table[0].macaddr.a[0] = 0x08; 258 nd_table[0].macaddr.a[1] = 0x00; 259 nd_table[0].macaddr.a[2] = 0x07; 260 261 dev = qdev_new("dp8393x"); 262 qdev_set_nic_properties(dev, &nd_table[0]); 263 qdev_prop_set_uint8(dev, "it_shift", 2); 264 qdev_prop_set_bit(dev, "big_endian", true); 265 object_property_set_link(OBJECT(dev), OBJECT(get_system_memory()), 266 "dma_mr", &error_abort); 267 sysbus = SYS_BUS_DEVICE(dev); 268 sysbus_realize_and_unref(sysbus, &error_fatal); 269 sysbus_mmio_map(sysbus, 0, SONIC_BASE); 270 sysbus_mmio_map(sysbus, 1, SONIC_PROM_BASE); 271 sysbus_connect_irq(sysbus, 0, pic[2]); 272 273 /* SCC */ 274 275 dev = qdev_new(TYPE_ESCC); 276 qdev_prop_set_uint32(dev, "disabled", 0); 277 qdev_prop_set_uint32(dev, "frequency", MAC_CLOCK); 278 qdev_prop_set_uint32(dev, "it_shift", 1); 279 qdev_prop_set_bit(dev, "bit_swap", true); 280 qdev_prop_set_chr(dev, "chrA", serial_hd(0)); 281 qdev_prop_set_chr(dev, "chrB", serial_hd(1)); 282 qdev_prop_set_uint32(dev, "chnBtype", 0); 283 qdev_prop_set_uint32(dev, "chnAtype", 0); 284 sysbus = SYS_BUS_DEVICE(dev); 285 sysbus_realize_and_unref(sysbus, &error_fatal); 286 sysbus_connect_irq(sysbus, 0, pic[3]); 287 sysbus_connect_irq(sysbus, 1, pic[3]); 288 sysbus_mmio_map(sysbus, 0, SCC_BASE); 289 290 /* SCSI */ 291 292 dev = qdev_new(TYPE_ESP); 293 sysbus_esp = ESP_STATE(dev); 294 esp = &sysbus_esp->esp; 295 esp->dma_memory_read = NULL; 296 esp->dma_memory_write = NULL; 297 esp->dma_opaque = NULL; 298 sysbus_esp->it_shift = 4; 299 esp->dma_enabled = 1; 300 301 sysbus = SYS_BUS_DEVICE(dev); 302 sysbus_realize_and_unref(sysbus, &error_fatal); 303 sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in_named(via_dev, 304 "via2-irq", 305 VIA2_IRQ_SCSI_BIT)); 306 sysbus_connect_irq(sysbus, 1, 307 qdev_get_gpio_in_named(via_dev, "via2-irq", 308 VIA2_IRQ_SCSI_DATA_BIT)); 309 sysbus_mmio_map(sysbus, 0, ESP_BASE); 310 sysbus_mmio_map(sysbus, 1, ESP_PDMA); 311 312 scsi_bus_legacy_handle_cmdline(&esp->bus); 313 314 /* SWIM floppy controller */ 315 316 dev = qdev_new(TYPE_SWIM); 317 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); 318 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, SWIM_BASE); 319 320 /* NuBus */ 321 322 dev = qdev_new(TYPE_MAC_NUBUS_BRIDGE); 323 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); 324 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, NUBUS_SUPER_SLOT_BASE); 325 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 1, NUBUS_SLOT_BASE); 326 327 nubus = MAC_NUBUS_BRIDGE(dev)->bus; 328 329 /* framebuffer in nubus slot #9 */ 330 331 dev = qdev_new(TYPE_NUBUS_MACFB); 332 qdev_prop_set_uint32(dev, "width", graphic_width); 333 qdev_prop_set_uint32(dev, "height", graphic_height); 334 qdev_prop_set_uint8(dev, "depth", graphic_depth); 335 qdev_realize_and_unref(dev, BUS(nubus), &error_fatal); 336 337 cs = CPU(cpu); 338 if (linux_boot) { 339 uint64_t high; 340 kernel_size = load_elf(kernel_filename, NULL, NULL, NULL, 341 &elf_entry, NULL, &high, NULL, 1, 342 EM_68K, 0, 0); 343 if (kernel_size < 0) { 344 error_report("could not load kernel '%s'", kernel_filename); 345 exit(1); 346 } 347 stl_phys(cs->as, 4, elf_entry); /* reset initial PC */ 348 parameters_base = (high + 1) & ~1; 349 350 BOOTINFO1(cs->as, parameters_base, BI_MACHTYPE, MACH_MAC); 351 BOOTINFO1(cs->as, parameters_base, BI_FPUTYPE, Q800_FPU_ID); 352 BOOTINFO1(cs->as, parameters_base, BI_MMUTYPE, Q800_MMU_ID); 353 BOOTINFO1(cs->as, parameters_base, BI_CPUTYPE, Q800_CPU_ID); 354 BOOTINFO1(cs->as, parameters_base, BI_MAC_CPUID, Q800_MAC_CPU_ID); 355 BOOTINFO1(cs->as, parameters_base, BI_MAC_MODEL, Q800_MACHINE_ID); 356 BOOTINFO1(cs->as, parameters_base, 357 BI_MAC_MEMSIZE, ram_size >> 20); /* in MB */ 358 BOOTINFO2(cs->as, parameters_base, BI_MEMCHUNK, 0, ram_size); 359 BOOTINFO1(cs->as, parameters_base, BI_MAC_VADDR, VIDEO_BASE); 360 BOOTINFO1(cs->as, parameters_base, BI_MAC_VDEPTH, graphic_depth); 361 BOOTINFO1(cs->as, parameters_base, BI_MAC_VDIM, 362 (graphic_height << 16) | graphic_width); 363 BOOTINFO1(cs->as, parameters_base, BI_MAC_VROW, 364 (graphic_width * graphic_depth + 7) / 8); 365 BOOTINFO1(cs->as, parameters_base, BI_MAC_SCCBASE, SCC_BASE); 366 367 rom = g_malloc(sizeof(*rom)); 368 memory_region_init_ram_ptr(rom, NULL, "m68k_fake_mac.rom", 369 sizeof(fake_mac_rom), fake_mac_rom); 370 memory_region_set_readonly(rom, true); 371 memory_region_add_subregion(get_system_memory(), MACROM_ADDR, rom); 372 373 if (kernel_cmdline) { 374 BOOTINFOSTR(cs->as, parameters_base, BI_COMMAND_LINE, 375 kernel_cmdline); 376 } 377 378 /* load initrd */ 379 if (initrd_filename) { 380 initrd_size = get_image_size(initrd_filename); 381 if (initrd_size < 0) { 382 error_report("could not load initial ram disk '%s'", 383 initrd_filename); 384 exit(1); 385 } 386 387 initrd_base = (ram_size - initrd_size) & TARGET_PAGE_MASK; 388 load_image_targphys(initrd_filename, initrd_base, 389 ram_size - initrd_base); 390 BOOTINFO2(cs->as, parameters_base, BI_RAMDISK, initrd_base, 391 initrd_size); 392 } else { 393 initrd_base = 0; 394 initrd_size = 0; 395 } 396 BOOTINFO0(cs->as, parameters_base, BI_LAST); 397 } else { 398 uint8_t *ptr; 399 /* allocate and load BIOS */ 400 rom = g_malloc(sizeof(*rom)); 401 memory_region_init_rom(rom, NULL, "m68k_mac.rom", MACROM_SIZE, 402 &error_abort); 403 if (bios_name == NULL) { 404 bios_name = MACROM_FILENAME; 405 } 406 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); 407 memory_region_add_subregion(get_system_memory(), MACROM_ADDR, rom); 408 409 /* Load MacROM binary */ 410 if (filename) { 411 bios_size = load_image_targphys(filename, MACROM_ADDR, MACROM_SIZE); 412 g_free(filename); 413 } else { 414 bios_size = -1; 415 } 416 417 /* Remove qtest_enabled() check once firmware files are in the tree */ 418 if (!qtest_enabled()) { 419 if (bios_size < 0 || bios_size > MACROM_SIZE) { 420 error_report("could not load MacROM '%s'", bios_name); 421 exit(1); 422 } 423 424 ptr = rom_ptr(MACROM_ADDR, MACROM_SIZE); 425 stl_phys(cs->as, 0, ldl_p(ptr)); /* reset initial SP */ 426 stl_phys(cs->as, 4, 427 MACROM_ADDR + ldl_p(ptr + 4)); /* reset initial PC */ 428 } 429 } 430 } 431 432 static void q800_machine_class_init(ObjectClass *oc, void *data) 433 { 434 MachineClass *mc = MACHINE_CLASS(oc); 435 mc->desc = "Macintosh Quadra 800"; 436 mc->init = q800_init; 437 mc->default_cpu_type = M68K_CPU_TYPE_NAME("m68040"); 438 mc->max_cpus = 1; 439 mc->block_default_type = IF_SCSI; 440 mc->default_ram_id = "m68k_mac.ram"; 441 } 442 443 static const TypeInfo q800_machine_typeinfo = { 444 .name = MACHINE_TYPE_NAME("q800"), 445 .parent = TYPE_MACHINE, 446 .class_init = q800_machine_class_init, 447 }; 448 449 static void q800_machine_register_types(void) 450 { 451 type_register_static(&q800_machine_typeinfo); 452 } 453 454 type_init(q800_machine_register_types) 455