hw/m68k/q800.c

   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     0x40000000
  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 VIA_BASE              0x50f00000
  64 #define SONIC_PROM_BASE       0x50f08000
  65 #define SONIC_BASE            0x50f0a000
  66 #define SCC_BASE              0x50f0c020
  67 #define ESP_BASE              0x50f10000
  68 #define ESP_PDMA              0x50f10100
  69 #define ASC_BASE              0x50F14000
  70 #define SWIM_BASE             0x50F1E000
  71 #define NUBUS_SUPER_SLOT_BASE 0x60000000
  72 #define NUBUS_SLOT_BASE       0xf0000000
  73
  74 /*
  75  * the video base, whereas it a Nubus address,
  76  * is needed by the kernel to have early display and
  77  * thus provided by the bootloader
  78  */
  79 #define VIDEO_BASE            0xf9001000
  80
  81 #define MAC_CLOCK  3686418
  82
  83 /*
  84  * The GLUE (General Logic Unit) is an Apple custom integrated circuit chip
  85  * that performs a variety of functions (RAM management, clock generation, ...).
  86  * The GLUE chip receives interrupt requests from various devices,
  87  * assign priority to each, and asserts one or more interrupt line to the
  88  * CPU.
  89  */
  90
  91 typedef struct {
  92     M68kCPU *cpu;
  93     uint8_t ipr;
  94 } GLUEState;
  95
  96 static void GLUE_set_irq(void *opaque, int irq, int level)
  97 {
  98     GLUEState *s = opaque;
  99     int i;
 100
 101     if (level) {
 102         s->ipr |= 1 << irq;
 103     } else {
 104         s->ipr &= ~(1 << irq);
 105     }
 106
 107     for (i = 7; i >= 0; i--) {
 108         if ((s->ipr >> i) & 1) {
 109             m68k_set_irq_level(s->cpu, i + 1, i + 25);
 110             return;
 111         }
 112     }
 113     m68k_set_irq_level(s->cpu, 0, 0);
 114 }
 115
 116 static void main_cpu_reset(void *opaque)
 117 {
 118     M68kCPU *cpu = opaque;
 119     CPUState *cs = CPU(cpu);
 120
 121     cpu_reset(cs);
 122     cpu->env.aregs[7] = ldl_phys(cs->as, 0);
 123     cpu->env.pc = ldl_phys(cs->as, 4);
 124 }
 125
 126 static void q800_init(MachineState *machine)
 127 {
 128     M68kCPU *cpu = NULL;
 129     int linux_boot;
 130     int32_t kernel_size;
 131     uint64_t elf_entry;
 132     char *filename;
 133     int bios_size;
 134     ram_addr_t initrd_base;
 135     int32_t initrd_size;
 136     MemoryRegion *rom;
 137     MemoryRegion *ram;
 138     ram_addr_t ram_size = machine->ram_size;
 139     const char *kernel_filename = machine->kernel_filename;
 140     const char *initrd_filename = machine->initrd_filename;
 141     const char *kernel_cmdline = machine->kernel_cmdline;
 142     hwaddr parameters_base;
 143     CPUState *cs;
 144     DeviceState *dev;
 145     DeviceState *via_dev;
 146     SysBusESPState *sysbus_esp;
 147     ESPState *esp;
 148     SysBusDevice *sysbus;
 149     BusState *adb_bus;
 150     NubusBus *nubus;
 151     GLUEState *irq;
 152     qemu_irq *pic;
 153
 154     linux_boot = (kernel_filename != NULL);
 155
 156     if (ram_size > 1 * GiB) {
 157         error_report("Too much memory for this machine: %" PRId64 " MiB, "
 158                      "maximum 1024 MiB", ram_size / MiB);
 159         exit(1);
 160     }
 161
 162     /* init CPUs */
 163     cpu = M68K_CPU(cpu_create(machine->cpu_type));
 164     qemu_register_reset(main_cpu_reset, cpu);
 165
 166     ram = g_malloc(sizeof(*ram));
 167     memory_region_init_ram(ram, NULL, "m68k_mac.ram", ram_size, &error_abort);
 168     memory_region_add_subregion(get_system_memory(), 0, ram);
 169
 170     /* IRQ Glue */
 171
 172     irq = g_new0(GLUEState, 1);
 173     irq->cpu = cpu;
 174     pic = qemu_allocate_irqs(GLUE_set_irq, irq, 8);
 175
 176     /* VIA */
 177
 178     via_dev = qdev_create(NULL, TYPE_MAC_VIA);
 179     qdev_init_nofail(via_dev);
 180     sysbus = SYS_BUS_DEVICE(via_dev);
 181     sysbus_mmio_map(sysbus, 0, VIA_BASE);
 182     qdev_connect_gpio_out_named(DEVICE(sysbus), "irq", 0, pic[0]);
 183     qdev_connect_gpio_out_named(DEVICE(sysbus), "irq", 1, pic[1]);
 184
 185
 186     adb_bus = qdev_get_child_bus(via_dev, "adb.0");
 187     dev = qdev_create(adb_bus, TYPE_ADB_KEYBOARD);
 188     qdev_init_nofail(dev);
 189     dev = qdev_create(adb_bus, TYPE_ADB_MOUSE);
 190     qdev_init_nofail(dev);
 191
 192     /* MACSONIC */
 193
 194     if (nb_nics > 1) {
 195         error_report("q800 can only have one ethernet interface");
 196         exit(1);
 197     }
 198
 199     qemu_check_nic_model(&nd_table[0], "dp83932");
 200
 201     /*
 202      * MacSonic driver needs an Apple MAC address
 203      * Valid prefix are:
 204      * 00:05:02 Apple
 205      * 00:80:19 Dayna Communications, Inc.
 206      * 00:A0:40 Apple
 207      * 08:00:07 Apple
 208      * (Q800 use the last one)
 209      */
 210     nd_table[0].macaddr.a[0] = 0x08;
 211     nd_table[0].macaddr.a[1] = 0x00;
 212     nd_table[0].macaddr.a[2] = 0x07;
 213
 214     dev = qdev_create(NULL, "dp8393x");
 215     qdev_set_nic_properties(dev, &nd_table[0]);
 216     qdev_prop_set_uint8(dev, "it_shift", 2);
 217     qdev_prop_set_bit(dev, "big_endian", true);
 218     qdev_prop_set_ptr(dev, "dma_mr", get_system_memory());
 219     qdev_init_nofail(dev);
 220     sysbus = SYS_BUS_DEVICE(dev);
 221     sysbus_mmio_map(sysbus, 0, SONIC_BASE);
 222     sysbus_mmio_map(sysbus, 1, SONIC_PROM_BASE);
 223     sysbus_connect_irq(sysbus, 0, pic[2]);
 224
 225     /* SCC */
 226
 227     dev = qdev_create(NULL, TYPE_ESCC);
 228     qdev_prop_set_uint32(dev, "disabled", 0);
 229     qdev_prop_set_uint32(dev, "frequency", MAC_CLOCK);
 230     qdev_prop_set_uint32(dev, "it_shift", 1);
 231     qdev_prop_set_bit(dev, "bit_swap", true);
 232     qdev_prop_set_chr(dev, "chrA", serial_hd(0));
 233     qdev_prop_set_chr(dev, "chrB", serial_hd(1));
 234     qdev_prop_set_uint32(dev, "chnBtype", 0);
 235     qdev_prop_set_uint32(dev, "chnAtype", 0);
 236     qdev_init_nofail(dev);
 237     sysbus = SYS_BUS_DEVICE(dev);
 238     sysbus_connect_irq(sysbus, 0, pic[3]);
 239     sysbus_connect_irq(sysbus, 1, pic[3]);
 240     sysbus_mmio_map(sysbus, 0, SCC_BASE);
 241
 242     /* SCSI */
 243
 244     dev = qdev_create(NULL, TYPE_ESP);
 245     sysbus_esp = ESP_STATE(dev);
 246     esp = &sysbus_esp->esp;
 247     esp->dma_memory_read = NULL;
 248     esp->dma_memory_write = NULL;
 249     esp->dma_opaque = NULL;
 250     sysbus_esp->it_shift = 4;
 251     esp->dma_enabled = 1;
 252     qdev_init_nofail(dev);
 253
 254     sysbus = SYS_BUS_DEVICE(dev);
 255     sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in_named(via_dev,
 256                                                          "via2-irq",
 257                                                          VIA2_IRQ_SCSI_BIT));
 258     sysbus_connect_irq(sysbus, 1,
 259                        qdev_get_gpio_in_named(via_dev, "via2-irq",
 260                                               VIA2_IRQ_SCSI_DATA_BIT));
 261     sysbus_mmio_map(sysbus, 0, ESP_BASE);
 262     sysbus_mmio_map(sysbus, 1, ESP_PDMA);
 263
 264     scsi_bus_legacy_handle_cmdline(&esp->bus);
 265
 266     /* SWIM floppy controller */
 267
 268     dev = qdev_create(NULL, TYPE_SWIM);
 269     qdev_init_nofail(dev);
 270     sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, SWIM_BASE);
 271
 272     /* NuBus */
 273
 274     dev = qdev_create(NULL, TYPE_MAC_NUBUS_BRIDGE);
 275     qdev_init_nofail(dev);
 276     sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, NUBUS_SUPER_SLOT_BASE);
 277     sysbus_mmio_map(SYS_BUS_DEVICE(dev), 1, NUBUS_SLOT_BASE);
 278
 279     nubus = MAC_NUBUS_BRIDGE(dev)->bus;
 280
 281     /* framebuffer in nubus slot #9 */
 282
 283     dev = qdev_create(BUS(nubus), TYPE_NUBUS_MACFB);
 284     qdev_prop_set_uint32(dev, "width", graphic_width);
 285     qdev_prop_set_uint32(dev, "height", graphic_height);
 286     qdev_prop_set_uint8(dev, "depth", graphic_depth);
 287     qdev_init_nofail(dev);
 288
 289     cs = CPU(cpu);
 290     if (linux_boot) {
 291         uint64_t high;
 292         kernel_size = load_elf(kernel_filename, NULL, NULL, NULL,
 293                                &elf_entry, NULL, &high, 1,
 294                                EM_68K, 0, 0);
 295         if (kernel_size < 0) {
 296             error_report("could not load kernel '%s'", kernel_filename);
 297             exit(1);
 298         }
 299         stl_phys(cs->as, 4, elf_entry); /* reset initial PC */
 300         parameters_base = (high + 1) & ~1;
 301
 302         BOOTINFO1(cs->as, parameters_base, BI_MACHTYPE, MACH_MAC);
 303         BOOTINFO1(cs->as, parameters_base, BI_FPUTYPE, Q800_FPU_ID);
 304         BOOTINFO1(cs->as, parameters_base, BI_MMUTYPE, Q800_MMU_ID);
 305         BOOTINFO1(cs->as, parameters_base, BI_CPUTYPE, Q800_CPU_ID);
 306         BOOTINFO1(cs->as, parameters_base, BI_MAC_CPUID, Q800_MAC_CPU_ID);
 307         BOOTINFO1(cs->as, parameters_base, BI_MAC_MODEL, Q800_MACHINE_ID);
 308         BOOTINFO1(cs->as, parameters_base,
 309                   BI_MAC_MEMSIZE, ram_size >> 20); /* in MB */
 310         BOOTINFO2(cs->as, parameters_base, BI_MEMCHUNK, 0, ram_size);
 311         BOOTINFO1(cs->as, parameters_base, BI_MAC_VADDR, VIDEO_BASE);
 312         BOOTINFO1(cs->as, parameters_base, BI_MAC_VDEPTH, graphic_depth);
 313         BOOTINFO1(cs->as, parameters_base, BI_MAC_VDIM,
 314                   (graphic_height << 16) | graphic_width);
 315         BOOTINFO1(cs->as, parameters_base, BI_MAC_VROW,
 316                   (graphic_width * graphic_depth + 7) / 8);
 317         BOOTINFO1(cs->as, parameters_base, BI_MAC_SCCBASE, SCC_BASE);
 318
 319         if (kernel_cmdline) {
 320             BOOTINFOSTR(cs->as, parameters_base, BI_COMMAND_LINE,
 321                         kernel_cmdline);
 322         }
 323
 324         /* load initrd */
 325         if (initrd_filename) {
 326             initrd_size = get_image_size(initrd_filename);
 327             if (initrd_size < 0) {
 328                 error_report("could not load initial ram disk '%s'",
 329                              initrd_filename);
 330                 exit(1);
 331             }
 332
 333             initrd_base = (ram_size - initrd_size) & TARGET_PAGE_MASK;
 334             load_image_targphys(initrd_filename, initrd_base,
 335                                 ram_size - initrd_base);
 336             BOOTINFO2(cs->as, parameters_base, BI_RAMDISK, initrd_base,
 337                       initrd_size);
 338         } else {
 339             initrd_base = 0;
 340             initrd_size = 0;
 341         }
 342         BOOTINFO0(cs->as, parameters_base, BI_LAST);
 343     } else {
 344         uint8_t *ptr;
 345         /* allocate and load BIOS */
 346         rom = g_malloc(sizeof(*rom));
 347         memory_region_init_ram(rom, NULL, "m68k_mac.rom", MACROM_SIZE,
 348                                &error_abort);
 349         if (bios_name == NULL) {
 350             bios_name = MACROM_FILENAME;
 351         }
 352         filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
 353         memory_region_set_readonly(rom, true);
 354         memory_region_add_subregion(get_system_memory(), MACROM_ADDR, rom);
 355
 356         /* Load MacROM binary */
 357         if (filename) {
 358             bios_size = load_image_targphys(filename, MACROM_ADDR, MACROM_SIZE);
 359             g_free(filename);
 360         } else {
 361             bios_size = -1;
 362         }
 363
 364         /* Remove qtest_enabled() check once firmware files are in the tree */
 365         if (!qtest_enabled()) {
 366             if (bios_size < 0 || bios_size > MACROM_SIZE) {
 367                 error_report("could not load MacROM '%s'", bios_name);
 368                 exit(1);
 369             }
 370
 371             ptr = rom_ptr(MACROM_ADDR, MACROM_SIZE);
 372             stl_phys(cs->as, 0, ldl_p(ptr));    /* reset initial SP */
 373             stl_phys(cs->as, 4,
 374                      MACROM_ADDR + ldl_p(ptr + 4)); /* reset initial PC */
 375         }
 376     }
 377 }
 378
 379 static void q800_machine_class_init(ObjectClass *oc, void *data)
 380 {
 381     MachineClass *mc = MACHINE_CLASS(oc);
 382     mc->desc = "Macintosh Quadra 800";
 383     mc->init = q800_init;
 384     mc->default_cpu_type = M68K_CPU_TYPE_NAME("m68040");
 385     mc->max_cpus = 1;
 386     mc->is_default = 0;
 387     mc->block_default_type = IF_SCSI;
 388 }
 389
 390 static const TypeInfo q800_machine_typeinfo = {
 391     .name       = MACHINE_TYPE_NAME("q800"),
 392     .parent     = TYPE_MACHINE,
 393     .class_init = q800_machine_class_init,
 394 };
 395
 396 static void q800_machine_register_types(void)
 397 {
 398     type_register_static(&q800_machine_typeinfo);
 399 }
 400
 401 type_init(q800_machine_register_types)