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 *ram; 164 MemoryRegion *io; 165 const int io_slice_nb = (IO_SIZE / IO_SLICE) - 1; 166 int i; 167 ram_addr_t ram_size = machine->ram_size; 168 const char *kernel_filename = machine->kernel_filename; 169 const char *initrd_filename = machine->initrd_filename; 170 const char *kernel_cmdline = machine->kernel_cmdline; 171 hwaddr parameters_base; 172 CPUState *cs; 173 DeviceState *dev; 174 DeviceState *via_dev; 175 SysBusESPState *sysbus_esp; 176 ESPState *esp; 177 SysBusDevice *sysbus; 178 BusState *adb_bus; 179 NubusBus *nubus; 180 GLUEState *irq; 181 qemu_irq *pic; 182 DriveInfo *dinfo; 183 184 linux_boot = (kernel_filename != NULL); 185 186 if (ram_size > 1 * GiB) { 187 error_report("Too much memory for this machine: %" PRId64 " MiB, " 188 "maximum 1024 MiB", ram_size / MiB); 189 exit(1); 190 } 191 192 /* init CPUs */ 193 cpu = M68K_CPU(cpu_create(machine->cpu_type)); 194 qemu_register_reset(main_cpu_reset, cpu); 195 196 /* RAM */ 197 ram = g_malloc(sizeof(*ram)); 198 memory_region_init_ram(ram, NULL, "m68k_mac.ram", ram_size, &error_abort); 199 memory_region_add_subregion(get_system_memory(), 0, ram); 200 201 /* 202 * Memory from IO_BASE to IO_BASE + IO_SLICE is repeated 203 * from IO_BASE + IO_SLICE to IO_BASE + IO_SIZE 204 */ 205 io = g_new(MemoryRegion, io_slice_nb); 206 for (i = 0; i < io_slice_nb; i++) { 207 char *name = g_strdup_printf("mac_m68k.io[%d]", i + 1); 208 209 memory_region_init_alias(&io[i], NULL, name, get_system_memory(), 210 IO_BASE, IO_SLICE); 211 memory_region_add_subregion(get_system_memory(), 212 IO_BASE + (i + 1) * IO_SLICE, &io[i]); 213 g_free(name); 214 } 215 216 /* IRQ Glue */ 217 218 irq = g_new0(GLUEState, 1); 219 irq->cpu = cpu; 220 pic = qemu_allocate_irqs(GLUE_set_irq, irq, 8); 221 222 /* VIA */ 223 224 via_dev = qdev_create(NULL, TYPE_MAC_VIA); 225 dinfo = drive_get(IF_MTD, 0, 0); 226 if (dinfo) { 227 qdev_prop_set_drive(via_dev, "drive", blk_by_legacy_dinfo(dinfo), 228 &error_abort); 229 } 230 qdev_init_nofail(via_dev); 231 sysbus = SYS_BUS_DEVICE(via_dev); 232 sysbus_mmio_map(sysbus, 0, VIA_BASE); 233 qdev_connect_gpio_out_named(DEVICE(sysbus), "irq", 0, pic[0]); 234 qdev_connect_gpio_out_named(DEVICE(sysbus), "irq", 1, pic[1]); 235 236 237 adb_bus = qdev_get_child_bus(via_dev, "adb.0"); 238 dev = qdev_create(adb_bus, TYPE_ADB_KEYBOARD); 239 qdev_init_nofail(dev); 240 dev = qdev_create(adb_bus, TYPE_ADB_MOUSE); 241 qdev_init_nofail(dev); 242 243 /* MACSONIC */ 244 245 if (nb_nics > 1) { 246 error_report("q800 can only have one ethernet interface"); 247 exit(1); 248 } 249 250 qemu_check_nic_model(&nd_table[0], "dp83932"); 251 252 /* 253 * MacSonic driver needs an Apple MAC address 254 * Valid prefix are: 255 * 00:05:02 Apple 256 * 00:80:19 Dayna Communications, Inc. 257 * 00:A0:40 Apple 258 * 08:00:07 Apple 259 * (Q800 use the last one) 260 */ 261 nd_table[0].macaddr.a[0] = 0x08; 262 nd_table[0].macaddr.a[1] = 0x00; 263 nd_table[0].macaddr.a[2] = 0x07; 264 265 dev = qdev_create(NULL, "dp8393x"); 266 qdev_set_nic_properties(dev, &nd_table[0]); 267 qdev_prop_set_uint8(dev, "it_shift", 2); 268 qdev_prop_set_bit(dev, "big_endian", true); 269 object_property_set_link(OBJECT(dev), OBJECT(get_system_memory()), 270 "dma_mr", &error_abort); 271 qdev_init_nofail(dev); 272 sysbus = SYS_BUS_DEVICE(dev); 273 sysbus_mmio_map(sysbus, 0, SONIC_BASE); 274 sysbus_mmio_map(sysbus, 1, SONIC_PROM_BASE); 275 sysbus_connect_irq(sysbus, 0, pic[2]); 276 277 /* SCC */ 278 279 dev = qdev_create(NULL, TYPE_ESCC); 280 qdev_prop_set_uint32(dev, "disabled", 0); 281 qdev_prop_set_uint32(dev, "frequency", MAC_CLOCK); 282 qdev_prop_set_uint32(dev, "it_shift", 1); 283 qdev_prop_set_bit(dev, "bit_swap", true); 284 qdev_prop_set_chr(dev, "chrA", serial_hd(0)); 285 qdev_prop_set_chr(dev, "chrB", serial_hd(1)); 286 qdev_prop_set_uint32(dev, "chnBtype", 0); 287 qdev_prop_set_uint32(dev, "chnAtype", 0); 288 qdev_init_nofail(dev); 289 sysbus = SYS_BUS_DEVICE(dev); 290 sysbus_connect_irq(sysbus, 0, pic[3]); 291 sysbus_connect_irq(sysbus, 1, pic[3]); 292 sysbus_mmio_map(sysbus, 0, SCC_BASE); 293 294 /* SCSI */ 295 296 dev = qdev_create(NULL, TYPE_ESP); 297 sysbus_esp = ESP_STATE(dev); 298 esp = &sysbus_esp->esp; 299 esp->dma_memory_read = NULL; 300 esp->dma_memory_write = NULL; 301 esp->dma_opaque = NULL; 302 sysbus_esp->it_shift = 4; 303 esp->dma_enabled = 1; 304 qdev_init_nofail(dev); 305 306 sysbus = SYS_BUS_DEVICE(dev); 307 sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in_named(via_dev, 308 "via2-irq", 309 VIA2_IRQ_SCSI_BIT)); 310 sysbus_connect_irq(sysbus, 1, 311 qdev_get_gpio_in_named(via_dev, "via2-irq", 312 VIA2_IRQ_SCSI_DATA_BIT)); 313 sysbus_mmio_map(sysbus, 0, ESP_BASE); 314 sysbus_mmio_map(sysbus, 1, ESP_PDMA); 315 316 scsi_bus_legacy_handle_cmdline(&esp->bus); 317 318 /* SWIM floppy controller */ 319 320 dev = qdev_create(NULL, TYPE_SWIM); 321 qdev_init_nofail(dev); 322 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, SWIM_BASE); 323 324 /* NuBus */ 325 326 dev = qdev_create(NULL, TYPE_MAC_NUBUS_BRIDGE); 327 qdev_init_nofail(dev); 328 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, NUBUS_SUPER_SLOT_BASE); 329 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 1, NUBUS_SLOT_BASE); 330 331 nubus = MAC_NUBUS_BRIDGE(dev)->bus; 332 333 /* framebuffer in nubus slot #9 */ 334 335 dev = qdev_create(BUS(nubus), TYPE_NUBUS_MACFB); 336 qdev_prop_set_uint32(dev, "width", graphic_width); 337 qdev_prop_set_uint32(dev, "height", graphic_height); 338 qdev_prop_set_uint8(dev, "depth", graphic_depth); 339 qdev_init_nofail(dev); 340 341 cs = CPU(cpu); 342 if (linux_boot) { 343 uint64_t high; 344 kernel_size = load_elf(kernel_filename, NULL, NULL, NULL, 345 &elf_entry, NULL, &high, 1, 346 EM_68K, 0, 0); 347 if (kernel_size < 0) { 348 error_report("could not load kernel '%s'", kernel_filename); 349 exit(1); 350 } 351 stl_phys(cs->as, 4, elf_entry); /* reset initial PC */ 352 parameters_base = (high + 1) & ~1; 353 354 BOOTINFO1(cs->as, parameters_base, BI_MACHTYPE, MACH_MAC); 355 BOOTINFO1(cs->as, parameters_base, BI_FPUTYPE, Q800_FPU_ID); 356 BOOTINFO1(cs->as, parameters_base, BI_MMUTYPE, Q800_MMU_ID); 357 BOOTINFO1(cs->as, parameters_base, BI_CPUTYPE, Q800_CPU_ID); 358 BOOTINFO1(cs->as, parameters_base, BI_MAC_CPUID, Q800_MAC_CPU_ID); 359 BOOTINFO1(cs->as, parameters_base, BI_MAC_MODEL, Q800_MACHINE_ID); 360 BOOTINFO1(cs->as, parameters_base, 361 BI_MAC_MEMSIZE, ram_size >> 20); /* in MB */ 362 BOOTINFO2(cs->as, parameters_base, BI_MEMCHUNK, 0, ram_size); 363 BOOTINFO1(cs->as, parameters_base, BI_MAC_VADDR, VIDEO_BASE); 364 BOOTINFO1(cs->as, parameters_base, BI_MAC_VDEPTH, graphic_depth); 365 BOOTINFO1(cs->as, parameters_base, BI_MAC_VDIM, 366 (graphic_height << 16) | graphic_width); 367 BOOTINFO1(cs->as, parameters_base, BI_MAC_VROW, 368 (graphic_width * graphic_depth + 7) / 8); 369 BOOTINFO1(cs->as, parameters_base, BI_MAC_SCCBASE, SCC_BASE); 370 371 rom = g_malloc(sizeof(*rom)); 372 memory_region_init_ram_ptr(rom, NULL, "m68k_fake_mac.rom", 373 sizeof(fake_mac_rom), fake_mac_rom); 374 memory_region_set_readonly(rom, true); 375 memory_region_add_subregion(get_system_memory(), MACROM_ADDR, rom); 376 377 if (kernel_cmdline) { 378 BOOTINFOSTR(cs->as, parameters_base, BI_COMMAND_LINE, 379 kernel_cmdline); 380 } 381 382 /* load initrd */ 383 if (initrd_filename) { 384 initrd_size = get_image_size(initrd_filename); 385 if (initrd_size < 0) { 386 error_report("could not load initial ram disk '%s'", 387 initrd_filename); 388 exit(1); 389 } 390 391 initrd_base = (ram_size - initrd_size) & TARGET_PAGE_MASK; 392 load_image_targphys(initrd_filename, initrd_base, 393 ram_size - initrd_base); 394 BOOTINFO2(cs->as, parameters_base, BI_RAMDISK, initrd_base, 395 initrd_size); 396 } else { 397 initrd_base = 0; 398 initrd_size = 0; 399 } 400 BOOTINFO0(cs->as, parameters_base, BI_LAST); 401 } else { 402 uint8_t *ptr; 403 /* allocate and load BIOS */ 404 rom = g_malloc(sizeof(*rom)); 405 memory_region_init_ram(rom, NULL, "m68k_mac.rom", MACROM_SIZE, 406 &error_abort); 407 if (bios_name == NULL) { 408 bios_name = MACROM_FILENAME; 409 } 410 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); 411 memory_region_set_readonly(rom, true); 412 memory_region_add_subregion(get_system_memory(), MACROM_ADDR, rom); 413 414 /* Load MacROM binary */ 415 if (filename) { 416 bios_size = load_image_targphys(filename, MACROM_ADDR, MACROM_SIZE); 417 g_free(filename); 418 } else { 419 bios_size = -1; 420 } 421 422 /* Remove qtest_enabled() check once firmware files are in the tree */ 423 if (!qtest_enabled()) { 424 if (bios_size < 0 || bios_size > MACROM_SIZE) { 425 error_report("could not load MacROM '%s'", bios_name); 426 exit(1); 427 } 428 429 ptr = rom_ptr(MACROM_ADDR, MACROM_SIZE); 430 stl_phys(cs->as, 0, ldl_p(ptr)); /* reset initial SP */ 431 stl_phys(cs->as, 4, 432 MACROM_ADDR + ldl_p(ptr + 4)); /* reset initial PC */ 433 } 434 } 435 } 436 437 static void q800_machine_class_init(ObjectClass *oc, void *data) 438 { 439 MachineClass *mc = MACHINE_CLASS(oc); 440 mc->desc = "Macintosh Quadra 800"; 441 mc->init = q800_init; 442 mc->default_cpu_type = M68K_CPU_TYPE_NAME("m68040"); 443 mc->max_cpus = 1; 444 mc->is_default = 0; 445 mc->block_default_type = IF_SCSI; 446 } 447 448 static const TypeInfo q800_machine_typeinfo = { 449 .name = MACHINE_TYPE_NAME("q800"), 450 .parent = TYPE_MACHINE, 451 .class_init = q800_machine_class_init, 452 }; 453 454 static void q800_machine_register_types(void) 455 { 456 type_register_static(&q800_machine_typeinfo); 457 } 458 459 type_init(q800_machine_register_types) 460