qemu/hw/mips/mips_jazz.c
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   1/*
   2 * QEMU MIPS Jazz support
   3 *
   4 * Copyright (c) 2007-2008 Hervé Poussineau
   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
  25#include "qemu/osdep.h"
  26#include "hw/hw.h"
  27#include "hw/mips/mips.h"
  28#include "hw/mips/cpudevs.h"
  29#include "hw/i386/pc.h"
  30#include "hw/dma/i8257.h"
  31#include "hw/char/serial.h"
  32#include "hw/char/parallel.h"
  33#include "hw/isa/isa.h"
  34#include "hw/block/fdc.h"
  35#include "sysemu/sysemu.h"
  36#include "sysemu/arch_init.h"
  37#include "hw/boards.h"
  38#include "net/net.h"
  39#include "hw/scsi/esp.h"
  40#include "hw/mips/bios.h"
  41#include "hw/loader.h"
  42#include "hw/timer/mc146818rtc.h"
  43#include "hw/timer/i8254.h"
  44#include "hw/display/vga.h"
  45#include "hw/audio/pcspk.h"
  46#include "hw/input/i8042.h"
  47#include "hw/sysbus.h"
  48#include "exec/address-spaces.h"
  49#include "sysemu/qtest.h"
  50#include "qapi/error.h"
  51#include "qemu/error-report.h"
  52#include "qemu/help_option.h"
  53
  54enum jazz_model_e
  55{
  56    JAZZ_MAGNUM,
  57    JAZZ_PICA61,
  58};
  59
  60static void main_cpu_reset(void *opaque)
  61{
  62    MIPSCPU *cpu = opaque;
  63
  64    cpu_reset(CPU(cpu));
  65}
  66
  67static uint64_t rtc_read(void *opaque, hwaddr addr, unsigned size)
  68{
  69    uint8_t val;
  70    address_space_read(&address_space_memory, 0x90000071,
  71                       MEMTXATTRS_UNSPECIFIED, &val, 1);
  72    return val;
  73}
  74
  75static void rtc_write(void *opaque, hwaddr addr,
  76                      uint64_t val, unsigned size)
  77{
  78    uint8_t buf = val & 0xff;
  79    address_space_write(&address_space_memory, 0x90000071,
  80                        MEMTXATTRS_UNSPECIFIED, &buf, 1);
  81}
  82
  83static const MemoryRegionOps rtc_ops = {
  84    .read = rtc_read,
  85    .write = rtc_write,
  86    .endianness = DEVICE_NATIVE_ENDIAN,
  87};
  88
  89static uint64_t dma_dummy_read(void *opaque, hwaddr addr,
  90                               unsigned size)
  91{
  92    /* Nothing to do. That is only to ensure that
  93     * the current DMA acknowledge cycle is completed. */
  94    return 0xff;
  95}
  96
  97static void dma_dummy_write(void *opaque, hwaddr addr,
  98                            uint64_t val, unsigned size)
  99{
 100    /* Nothing to do. That is only to ensure that
 101     * the current DMA acknowledge cycle is completed. */
 102}
 103
 104static const MemoryRegionOps dma_dummy_ops = {
 105    .read = dma_dummy_read,
 106    .write = dma_dummy_write,
 107    .endianness = DEVICE_NATIVE_ENDIAN,
 108};
 109
 110#define MAGNUM_BIOS_SIZE_MAX 0x7e000
 111#define MAGNUM_BIOS_SIZE (BIOS_SIZE < MAGNUM_BIOS_SIZE_MAX ? BIOS_SIZE : MAGNUM_BIOS_SIZE_MAX)
 112
 113static CPUUnassignedAccess real_do_unassigned_access;
 114static void mips_jazz_do_unassigned_access(CPUState *cpu, hwaddr addr,
 115                                           bool is_write, bool is_exec,
 116                                           int opaque, unsigned size)
 117{
 118    if (!is_exec) {
 119        /* ignore invalid access (ie do not raise exception) */
 120        return;
 121    }
 122    (*real_do_unassigned_access)(cpu, addr, is_write, is_exec, opaque, size);
 123}
 124
 125static void mips_jazz_init(MachineState *machine,
 126                           enum jazz_model_e jazz_model)
 127{
 128    MemoryRegion *address_space = get_system_memory();
 129    char *filename;
 130    int bios_size, n;
 131    MIPSCPU *cpu;
 132    CPUClass *cc;
 133    CPUMIPSState *env;
 134    qemu_irq *i8259;
 135    rc4030_dma *dmas;
 136    IOMMUMemoryRegion *rc4030_dma_mr;
 137    MemoryRegion *isa_mem = g_new(MemoryRegion, 1);
 138    MemoryRegion *isa_io = g_new(MemoryRegion, 1);
 139    MemoryRegion *rtc = g_new(MemoryRegion, 1);
 140    MemoryRegion *i8042 = g_new(MemoryRegion, 1);
 141    MemoryRegion *dma_dummy = g_new(MemoryRegion, 1);
 142    NICInfo *nd;
 143    DeviceState *dev, *rc4030;
 144    SysBusDevice *sysbus;
 145    ISABus *isa_bus;
 146    ISADevice *pit;
 147    DriveInfo *fds[MAX_FD];
 148    MemoryRegion *ram = g_new(MemoryRegion, 1);
 149    MemoryRegion *bios = g_new(MemoryRegion, 1);
 150    MemoryRegion *bios2 = g_new(MemoryRegion, 1);
 151    SysBusESPState *sysbus_esp;
 152    ESPState *esp;
 153
 154    /* init CPUs */
 155    cpu = MIPS_CPU(cpu_create(machine->cpu_type));
 156    env = &cpu->env;
 157    qemu_register_reset(main_cpu_reset, cpu);
 158
 159    /* Chipset returns 0 in invalid reads and do not raise data exceptions.
 160     * However, we can't simply add a global memory region to catch
 161     * everything, as memory core directly call unassigned_mem_read/write
 162     * on some invalid accesses, which call do_unassigned_access on the
 163     * CPU, which raise an exception.
 164     * Handle that case by hijacking the do_unassigned_access method on
 165     * the CPU, and do not raise exceptions for data access. */
 166    cc = CPU_GET_CLASS(cpu);
 167    real_do_unassigned_access = cc->do_unassigned_access;
 168    cc->do_unassigned_access = mips_jazz_do_unassigned_access;
 169
 170    /* allocate RAM */
 171    memory_region_allocate_system_memory(ram, NULL, "mips_jazz.ram",
 172                                         machine->ram_size);
 173    memory_region_add_subregion(address_space, 0, ram);
 174
 175    memory_region_init_ram(bios, NULL, "mips_jazz.bios", MAGNUM_BIOS_SIZE,
 176                           &error_fatal);
 177    memory_region_set_readonly(bios, true);
 178    memory_region_init_alias(bios2, NULL, "mips_jazz.bios", bios,
 179                             0, MAGNUM_BIOS_SIZE);
 180    memory_region_add_subregion(address_space, 0x1fc00000LL, bios);
 181    memory_region_add_subregion(address_space, 0xfff00000LL, bios2);
 182
 183    /* load the BIOS image. */
 184    if (bios_name == NULL)
 185        bios_name = BIOS_FILENAME;
 186    filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
 187    if (filename) {
 188        bios_size = load_image_targphys(filename, 0xfff00000LL,
 189                                        MAGNUM_BIOS_SIZE);
 190        g_free(filename);
 191    } else {
 192        bios_size = -1;
 193    }
 194    if ((bios_size < 0 || bios_size > MAGNUM_BIOS_SIZE) && !qtest_enabled()) {
 195        error_report("Could not load MIPS bios '%s'", bios_name);
 196        exit(1);
 197    }
 198
 199    /* Init CPU internal devices */
 200    cpu_mips_irq_init_cpu(cpu);
 201    cpu_mips_clock_init(cpu);
 202
 203    /* Chipset */
 204    rc4030 = rc4030_init(&dmas, &rc4030_dma_mr);
 205    sysbus = SYS_BUS_DEVICE(rc4030);
 206    sysbus_connect_irq(sysbus, 0, env->irq[6]);
 207    sysbus_connect_irq(sysbus, 1, env->irq[3]);
 208    memory_region_add_subregion(address_space, 0x80000000,
 209                                sysbus_mmio_get_region(sysbus, 0));
 210    memory_region_add_subregion(address_space, 0xf0000000,
 211                                sysbus_mmio_get_region(sysbus, 1));
 212    memory_region_init_io(dma_dummy, NULL, &dma_dummy_ops, NULL, "dummy_dma", 0x1000);
 213    memory_region_add_subregion(address_space, 0x8000d000, dma_dummy);
 214
 215    /* ISA bus: IO space at 0x90000000, mem space at 0x91000000 */
 216    memory_region_init(isa_io, NULL, "isa-io", 0x00010000);
 217    memory_region_init(isa_mem, NULL, "isa-mem", 0x01000000);
 218    memory_region_add_subregion(address_space, 0x90000000, isa_io);
 219    memory_region_add_subregion(address_space, 0x91000000, isa_mem);
 220    isa_bus = isa_bus_new(NULL, isa_mem, isa_io, &error_abort);
 221
 222    /* ISA devices */
 223    i8259 = i8259_init(isa_bus, env->irq[4]);
 224    isa_bus_irqs(isa_bus, i8259);
 225    i8257_dma_init(isa_bus, 0);
 226    pit = i8254_pit_init(isa_bus, 0x40, 0, NULL);
 227    pcspk_init(isa_bus, pit);
 228
 229    /* Video card */
 230    switch (jazz_model) {
 231    case JAZZ_MAGNUM:
 232        dev = qdev_create(NULL, "sysbus-g364");
 233        qdev_init_nofail(dev);
 234        sysbus = SYS_BUS_DEVICE(dev);
 235        sysbus_mmio_map(sysbus, 0, 0x60080000);
 236        sysbus_mmio_map(sysbus, 1, 0x40000000);
 237        sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in(rc4030, 3));
 238        {
 239            /* Simple ROM, so user doesn't have to provide one */
 240            MemoryRegion *rom_mr = g_new(MemoryRegion, 1);
 241            memory_region_init_ram(rom_mr, NULL, "g364fb.rom", 0x80000,
 242                                   &error_fatal);
 243            memory_region_set_readonly(rom_mr, true);
 244            uint8_t *rom = memory_region_get_ram_ptr(rom_mr);
 245            memory_region_add_subregion(address_space, 0x60000000, rom_mr);
 246            rom[0] = 0x10; /* Mips G364 */
 247        }
 248        break;
 249    case JAZZ_PICA61:
 250        isa_vga_mm_init(0x40000000, 0x60000000, 0, get_system_memory());
 251        break;
 252    default:
 253        break;
 254    }
 255
 256    /* Network controller */
 257    for (n = 0; n < nb_nics; n++) {
 258        nd = &nd_table[n];
 259        if (!nd->model)
 260            nd->model = g_strdup("dp83932");
 261        if (strcmp(nd->model, "dp83932") == 0) {
 262            qemu_check_nic_model(nd, "dp83932");
 263
 264            dev = qdev_create(NULL, "dp8393x");
 265            qdev_set_nic_properties(dev, nd);
 266            qdev_prop_set_uint8(dev, "it_shift", 2);
 267            qdev_prop_set_ptr(dev, "dma_mr", rc4030_dma_mr);
 268            qdev_init_nofail(dev);
 269            sysbus = SYS_BUS_DEVICE(dev);
 270            sysbus_mmio_map(sysbus, 0, 0x80001000);
 271            sysbus_mmio_map(sysbus, 1, 0x8000b000);
 272            sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in(rc4030, 4));
 273            break;
 274        } else if (is_help_option(nd->model)) {
 275            error_report("Supported NICs: dp83932");
 276            exit(1);
 277        } else {
 278            error_report("Unsupported NIC: %s", nd->model);
 279            exit(1);
 280        }
 281    }
 282
 283    /* SCSI adapter */
 284    dev = qdev_create(NULL, TYPE_ESP);
 285    sysbus_esp = ESP_STATE(dev);
 286    esp = &sysbus_esp->esp;
 287    esp->dma_memory_read = rc4030_dma_read;
 288    esp->dma_memory_write = rc4030_dma_write;
 289    esp->dma_opaque = dmas[0];
 290    sysbus_esp->it_shift = 0;
 291    /* XXX for now until rc4030 has been changed to use DMA enable signal */
 292    esp->dma_enabled = 1;
 293    qdev_init_nofail(dev);
 294
 295    sysbus = SYS_BUS_DEVICE(dev);
 296    sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in(rc4030, 5));
 297    sysbus_mmio_map(sysbus, 0, 0x80002000);
 298
 299    scsi_bus_legacy_handle_cmdline(&esp->bus);
 300
 301    /* Floppy */
 302    for (n = 0; n < MAX_FD; n++) {
 303        fds[n] = drive_get(IF_FLOPPY, 0, n);
 304    }
 305    /* FIXME: we should enable DMA with a custom IsaDma device */
 306    fdctrl_init_sysbus(qdev_get_gpio_in(rc4030, 1), -1, 0x80003000, fds);
 307
 308    /* Real time clock */
 309    mc146818_rtc_init(isa_bus, 1980, NULL);
 310    memory_region_init_io(rtc, NULL, &rtc_ops, NULL, "rtc", 0x1000);
 311    memory_region_add_subregion(address_space, 0x80004000, rtc);
 312
 313    /* Keyboard (i8042) */
 314    i8042_mm_init(qdev_get_gpio_in(rc4030, 6), qdev_get_gpio_in(rc4030, 7),
 315                  i8042, 0x1000, 0x1);
 316    memory_region_add_subregion(address_space, 0x80005000, i8042);
 317
 318    /* Serial ports */
 319    if (serial_hd(0)) {
 320        serial_mm_init(address_space, 0x80006000, 0,
 321                       qdev_get_gpio_in(rc4030, 8), 8000000/16,
 322                       serial_hd(0), DEVICE_NATIVE_ENDIAN);
 323    }
 324    if (serial_hd(1)) {
 325        serial_mm_init(address_space, 0x80007000, 0,
 326                       qdev_get_gpio_in(rc4030, 9), 8000000/16,
 327                       serial_hd(1), DEVICE_NATIVE_ENDIAN);
 328    }
 329
 330    /* Parallel port */
 331    if (parallel_hds[0])
 332        parallel_mm_init(address_space, 0x80008000, 0,
 333                         qdev_get_gpio_in(rc4030, 0), parallel_hds[0]);
 334
 335    /* FIXME: missing Jazz sound at 0x8000c000, rc4030[2] */
 336
 337    /* NVRAM */
 338    dev = qdev_create(NULL, "ds1225y");
 339    qdev_init_nofail(dev);
 340    sysbus = SYS_BUS_DEVICE(dev);
 341    sysbus_mmio_map(sysbus, 0, 0x80009000);
 342
 343    /* LED indicator */
 344    sysbus_create_simple("jazz-led", 0x8000f000, NULL);
 345}
 346
 347static
 348void mips_magnum_init(MachineState *machine)
 349{
 350    mips_jazz_init(machine, JAZZ_MAGNUM);
 351}
 352
 353static
 354void mips_pica61_init(MachineState *machine)
 355{
 356    mips_jazz_init(machine, JAZZ_PICA61);
 357}
 358
 359static void mips_magnum_class_init(ObjectClass *oc, void *data)
 360{
 361    MachineClass *mc = MACHINE_CLASS(oc);
 362
 363    mc->desc = "MIPS Magnum";
 364    mc->init = mips_magnum_init;
 365    mc->block_default_type = IF_SCSI;
 366    mc->default_cpu_type = MIPS_CPU_TYPE_NAME("R4000");
 367}
 368
 369static const TypeInfo mips_magnum_type = {
 370    .name = MACHINE_TYPE_NAME("magnum"),
 371    .parent = TYPE_MACHINE,
 372    .class_init = mips_magnum_class_init,
 373};
 374
 375static void mips_pica61_class_init(ObjectClass *oc, void *data)
 376{
 377    MachineClass *mc = MACHINE_CLASS(oc);
 378
 379    mc->desc = "Acer Pica 61";
 380    mc->init = mips_pica61_init;
 381    mc->block_default_type = IF_SCSI;
 382    mc->default_cpu_type = MIPS_CPU_TYPE_NAME("R4000");
 383}
 384
 385static const TypeInfo mips_pica61_type = {
 386    .name = MACHINE_TYPE_NAME("pica61"),
 387    .parent = TYPE_MACHINE,
 388    .class_init = mips_pica61_class_init,
 389};
 390
 391static void mips_jazz_machine_init(void)
 392{
 393    type_register_static(&mips_magnum_type);
 394    type_register_static(&mips_pica61_type);
 395}
 396
 397type_init(mips_jazz_machine_init)
 398