hw/mips/mips_jazz.c

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