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