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 "hw/hw.h"
  26 #include "hw/mips/mips.h"
  27 #include "hw/mips/cpudevs.h"
  28 #include "hw/i386/pc.h"
  29 #include "hw/char/serial.h"
  30 #include "hw/isa/isa.h"
  31 #include "hw/block/fdc.h"
  32 #include "sysemu/sysemu.h"
  33 #include "sysemu/arch_init.h"
  34 #include "hw/boards.h"
  35 #include "net/net.h"
  36 #include "hw/scsi/esp.h"
  37 #include "hw/mips/bios.h"
  38 #include "hw/loader.h"
  39 #include "hw/timer/mc146818rtc.h"
  40 #include "hw/timer/i8254.h"
  41 #include "hw/audio/pcspk.h"
  42 #include "sysemu/block-backend.h"
  43 #include "hw/sysbus.h"
  44 #include "exec/address-spaces.h"
  45 #include "sysemu/qtest.h"
  46 #include "qemu/error-report.h"
  47
  48 enum jazz_model_e
  49 {
  50     JAZZ_MAGNUM,
  51     JAZZ_PICA61,
  52 };
  53
  54 static void main_cpu_reset(void *opaque)
  55 {
  56     MIPSCPU *cpu = opaque;
  57
  58     cpu_reset(CPU(cpu));
  59 }
  60
  61 static uint64_t rtc_read(void *opaque, hwaddr addr, unsigned size)
  62 {
  63     uint8_t val;
  64     address_space_read(&address_space_memory, 0x90000071,
  65                        MEMTXATTRS_UNSPECIFIED, &val, 1);
  66     return val;
  67 }
  68
  69 static void rtc_write(void *opaque, hwaddr addr,
  70                       uint64_t val, unsigned size)
  71 {
  72     uint8_t buf = val & 0xff;
  73     address_space_write(&address_space_memory, 0x90000071,
  74                         MEMTXATTRS_UNSPECIFIED, &buf, 1);
  75 }
  76
  77 static const MemoryRegionOps rtc_ops = {
  78     .read = rtc_read,
  79     .write = rtc_write,
  80     .endianness = DEVICE_NATIVE_ENDIAN,
  81 };
  82
  83 static uint64_t dma_dummy_read(void *opaque, hwaddr addr,
  84                                unsigned size)
  85 {
  86     /* Nothing to do. That is only to ensure that
  87      * the current DMA acknowledge cycle is completed. */
  88     return 0xff;
  89 }
  90
  91 static void dma_dummy_write(void *opaque, hwaddr addr,
  92                             uint64_t val, unsigned size)
  93 {
  94     /* Nothing to do. That is only to ensure that
  95      * the current DMA acknowledge cycle is completed. */
  96 }
  97
  98 static const MemoryRegionOps dma_dummy_ops = {
  99     .read = dma_dummy_read,
 100     .write = dma_dummy_write,
 101     .endianness = DEVICE_NATIVE_ENDIAN,
 102 };
 103
 104 #define MAGNUM_BIOS_SIZE_MAX 0x7e000
 105 #define MAGNUM_BIOS_SIZE (BIOS_SIZE < MAGNUM_BIOS_SIZE_MAX ? BIOS_SIZE : MAGNUM_BIOS_SIZE_MAX)
 106
 107 static CPUUnassignedAccess real_do_unassigned_access;
 108 static void mips_jazz_do_unassigned_access(CPUState *cpu, hwaddr addr,
 109                                            bool is_write, bool is_exec,
 110                                            int opaque, unsigned size)
 111 {
 112     if (!is_exec) {
 113         /* ignore invalid access (ie do not raise exception) */
 114         return;
 115     }
 116     (*real_do_unassigned_access)(cpu, addr, is_write, is_exec, opaque, size);
 117 }
 118
 119 static void mips_jazz_init(MachineState *machine,
 120                            enum jazz_model_e jazz_model)
 121 {
 122     MemoryRegion *address_space = get_system_memory();
 123     const char *cpu_model = machine->cpu_model;
 124     char *filename;
 125     int bios_size, n;
 126     MIPSCPU *cpu;
 127     CPUClass *cc;
 128     CPUMIPSState *env;
 129     qemu_irq *i8259;
 130     rc4030_dma *dmas;
 131     MemoryRegion *rc4030_dma_mr;
 132     MemoryRegion *isa_mem = g_new(MemoryRegion, 1);
 133     MemoryRegion *isa_io = g_new(MemoryRegion, 1);
 134     MemoryRegion *rtc = g_new(MemoryRegion, 1);
 135     MemoryRegion *i8042 = g_new(MemoryRegion, 1);
 136     MemoryRegion *dma_dummy = g_new(MemoryRegion, 1);
 137     NICInfo *nd;
 138     DeviceState *dev, *rc4030;
 139     SysBusDevice *sysbus;
 140     ISABus *isa_bus;
 141     ISADevice *pit;
 142     DriveInfo *fds[MAX_FD];
 143     qemu_irq esp_reset, dma_enable;
 144     MemoryRegion *ram = g_new(MemoryRegion, 1);
 145     MemoryRegion *bios = g_new(MemoryRegion, 1);
 146     MemoryRegion *bios2 = g_new(MemoryRegion, 1);
 147
 148     /* init CPUs */
 149     if (cpu_model == NULL) {
 150         cpu_model = "R4000";
 151     }
 152     cpu = cpu_mips_init(cpu_model);
 153     if (cpu == NULL) {
 154         fprintf(stderr, "Unable to find CPU definition\n");
 155         exit(1);
 156     }
 157     env = &cpu->env;
 158     qemu_register_reset(main_cpu_reset, cpu);
 159
 160     /* Chipset returns 0 in invalid reads and do not raise data exceptions.
 161      * However, we can't simply add a global memory region to catch
 162      * everything, as memory core directly call unassigned_mem_read/write
 163      * on some invalid accesses, which call do_unassigned_access on the
 164      * CPU, which raise an exception.
 165      * Handle that case by hijacking the do_unassigned_access method on
 166      * the CPU, and do not raise exceptions for data access. */
 167     cc = CPU_GET_CLASS(cpu);
 168     real_do_unassigned_access = cc->do_unassigned_access;
 169     cc->do_unassigned_access = mips_jazz_do_unassigned_access;
 170
 171     /* allocate RAM */
 172     memory_region_allocate_system_memory(ram, NULL, "mips_jazz.ram",
 173                                          machine->ram_size);
 174     memory_region_add_subregion(address_space, 0, ram);
 175
 176     memory_region_init_ram(bios, NULL, "mips_jazz.bios", MAGNUM_BIOS_SIZE,
 177                            &error_fatal);
 178     vmstate_register_ram_global(bios);
 179     memory_region_set_readonly(bios, true);
 180     memory_region_init_alias(bios2, NULL, "mips_jazz.bios", bios,
 181                              0, MAGNUM_BIOS_SIZE);
 182     memory_region_add_subregion(address_space, 0x1fc00000LL, bios);
 183     memory_region_add_subregion(address_space, 0xfff00000LL, bios2);
 184
 185     /* load the BIOS image. */
 186     if (bios_name == NULL)
 187         bios_name = BIOS_FILENAME;
 188     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
 189     if (filename) {
 190         bios_size = load_image_targphys(filename, 0xfff00000LL,
 191                                         MAGNUM_BIOS_SIZE);
 192         g_free(filename);
 193     } else {
 194         bios_size = -1;
 195     }
 196     if ((bios_size < 0 || bios_size > MAGNUM_BIOS_SIZE) && !qtest_enabled()) {
 197         error_report("Could not load MIPS bios '%s'", bios_name);
 198         exit(1);
 199     }
 200
 201     /* Init CPU internal devices */
 202     cpu_mips_irq_init_cpu(env);
 203     cpu_mips_clock_init(env);
 204
 205     /* Chipset */
 206     rc4030 = rc4030_init(&dmas, &rc4030_dma_mr);
 207     sysbus = SYS_BUS_DEVICE(rc4030);
 208     sysbus_connect_irq(sysbus, 0, env->irq[6]);
 209     sysbus_connect_irq(sysbus, 1, env->irq[3]);
 210     memory_region_add_subregion(address_space, 0x80000000,
 211                                 sysbus_mmio_get_region(sysbus, 0));
 212     memory_region_add_subregion(address_space, 0xf0000000,
 213                                 sysbus_mmio_get_region(sysbus, 1));
 214     memory_region_init_io(dma_dummy, NULL, &dma_dummy_ops, NULL, "dummy_dma", 0x1000);
 215     memory_region_add_subregion(address_space, 0x8000d000, dma_dummy);
 216
 217     /* ISA bus: IO space at 0x90000000, mem space at 0x91000000 */
 218     memory_region_init(isa_io, NULL, "isa-io", 0x00010000);
 219     memory_region_init(isa_mem, NULL, "isa-mem", 0x01000000);
 220     memory_region_add_subregion(address_space, 0x90000000, isa_io);
 221     memory_region_add_subregion(address_space, 0x91000000, isa_mem);
 222     isa_bus = isa_bus_new(NULL, isa_mem, isa_io);
 223
 224     /* ISA devices */
 225     i8259 = i8259_init(isa_bus, env->irq[4]);
 226     isa_bus_irqs(isa_bus, i8259);
 227     DMA_init(0);
 228     pit = pit_init(isa_bus, 0x40, 0, NULL);
 229     pcspk_init(isa_bus, pit);
 230
 231     /* Video card */
 232     switch (jazz_model) {
 233     case JAZZ_MAGNUM:
 234         dev = qdev_create(NULL, "sysbus-g364");
 235         qdev_init_nofail(dev);
 236         sysbus = SYS_BUS_DEVICE(dev);
 237         sysbus_mmio_map(sysbus, 0, 0x60080000);
 238         sysbus_mmio_map(sysbus, 1, 0x40000000);
 239         sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in(rc4030, 3));
 240         {
 241             /* Simple ROM, so user doesn't have to provide one */
 242             MemoryRegion *rom_mr = g_new(MemoryRegion, 1);
 243             memory_region_init_ram(rom_mr, NULL, "g364fb.rom", 0x80000,
 244                                    &error_fatal);
 245             vmstate_register_ram_global(rom_mr);
 246             memory_region_set_readonly(rom_mr, true);
 247             uint8_t *rom = memory_region_get_ram_ptr(rom_mr);
 248             memory_region_add_subregion(address_space, 0x60000000, rom_mr);
 249             rom[0] = 0x10; /* Mips G364 */
 250         }
 251         break;
 252     case JAZZ_PICA61:
 253         isa_vga_mm_init(0x40000000, 0x60000000, 0, get_system_memory());
 254         break;
 255     default:
 256         break;
 257     }
 258
 259     /* Network controller */
 260     for (n = 0; n < nb_nics; n++) {
 261         nd = &nd_table[n];
 262         if (!nd->model)
 263             nd->model = g_strdup("dp83932");
 264         if (strcmp(nd->model, "dp83932") == 0) {
 265             qemu_check_nic_model(nd, "dp83932");
 266
 267             dev = qdev_create(NULL, "dp8393x");
 268             qdev_set_nic_properties(dev, nd);
 269             qdev_prop_set_uint8(dev, "it_shift", 2);
 270             qdev_prop_set_ptr(dev, "dma_mr", rc4030_dma_mr);
 271             qdev_init_nofail(dev);
 272             sysbus = SYS_BUS_DEVICE(dev);
 273             sysbus_mmio_map(sysbus, 0, 0x80001000);
 274             sysbus_mmio_map(sysbus, 1, 0x8000b000);
 275             sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in(rc4030, 4));
 276             break;
 277         } else if (is_help_option(nd->model)) {
 278             fprintf(stderr, "qemu: Supported NICs: dp83932\n");
 279             exit(1);
 280         } else {
 281             fprintf(stderr, "qemu: Unsupported NIC: %s\n", nd->model);
 282             exit(1);
 283         }
 284     }
 285
 286     /* SCSI adapter */
 287     esp_init(0x80002000, 0,
 288              rc4030_dma_read, rc4030_dma_write, dmas[0],
 289              qdev_get_gpio_in(rc4030, 5), &esp_reset, &dma_enable);
 290
 291     /* Floppy */
 292     if (drive_get_max_bus(IF_FLOPPY) >= MAX_FD) {
 293         fprintf(stderr, "qemu: too many floppy drives\n");
 294         exit(1);
 295     }
 296     for (n = 0; n < MAX_FD; n++) {
 297         fds[n] = drive_get(IF_FLOPPY, 0, n);
 298     }
 299     fdctrl_init_sysbus(qdev_get_gpio_in(rc4030, 1), 0, 0x80003000, fds);
 300
 301     /* Real time clock */
 302     rtc_init(isa_bus, 1980, NULL);
 303     memory_region_init_io(rtc, NULL, &rtc_ops, NULL, "rtc", 0x1000);
 304     memory_region_add_subregion(address_space, 0x80004000, rtc);
 305
 306     /* Keyboard (i8042) */
 307     i8042_mm_init(qdev_get_gpio_in(rc4030, 6), qdev_get_gpio_in(rc4030, 7),
 308                   i8042, 0x1000, 0x1);
 309     memory_region_add_subregion(address_space, 0x80005000, i8042);
 310
 311     /* Serial ports */
 312     if (serial_hds[0]) {
 313         serial_mm_init(address_space, 0x80006000, 0,
 314                        qdev_get_gpio_in(rc4030, 8), 8000000/16,
 315                        serial_hds[0], DEVICE_NATIVE_ENDIAN);
 316     }
 317     if (serial_hds[1]) {
 318         serial_mm_init(address_space, 0x80007000, 0,
 319                        qdev_get_gpio_in(rc4030, 9), 8000000/16,
 320                        serial_hds[1], DEVICE_NATIVE_ENDIAN);
 321     }
 322
 323     /* Parallel port */
 324     if (parallel_hds[0])
 325         parallel_mm_init(address_space, 0x80008000, 0,
 326                          qdev_get_gpio_in(rc4030, 0), parallel_hds[0]);
 327
 328     /* FIXME: missing Jazz sound at 0x8000c000, rc4030[2] */
 329
 330     /* NVRAM */
 331     dev = qdev_create(NULL, "ds1225y");
 332     qdev_init_nofail(dev);
 333     sysbus = SYS_BUS_DEVICE(dev);
 334     sysbus_mmio_map(sysbus, 0, 0x80009000);
 335
 336     /* LED indicator */
 337     sysbus_create_simple("jazz-led", 0x8000f000, NULL);
 338 }
 339
 340 static
 341 void mips_magnum_init(MachineState *machine)
 342 {
 343     mips_jazz_init(machine, JAZZ_MAGNUM);
 344 }
 345
 346 static
 347 void mips_pica61_init(MachineState *machine)
 348 {
 349     mips_jazz_init(machine, JAZZ_PICA61);
 350 }
 351
 352 static void mips_magnum_machine_init(MachineClass *mc)
 353 {
 354     mc->desc = "MIPS Magnum";
 355     mc->init = mips_magnum_init;
 356     mc->block_default_type = IF_SCSI;
 357 }
 358
 359 DEFINE_MACHINE("magnum", mips_magnum_machine_init)
 360
 361 static void mips_pica61_machine_init(MachineClass *mc)
 362 {
 363     mc->desc = "Acer Pica 61";
 364     mc->init = mips_pica61_init;
 365     mc->block_default_type = IF_SCSI;
 366 }
 367
 368 DEFINE_MACHINE("pica61", mips_pica61_machine_init)