hw/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 "qemu-common.h"
  27 #include "qemu/datadir.h"
  28 #include "hw/clock.h"
  29 #include "hw/mips/mips.h"
  30 #include "hw/mips/cpudevs.h"
  31 #include "hw/intc/i8259.h"
  32 #include "hw/dma/i8257.h"
  33 #include "hw/char/serial.h"
  34 #include "hw/char/parallel.h"
  35 #include "hw/isa/isa.h"
  36 #include "hw/block/fdc.h"
  37 #include "sysemu/sysemu.h"
  38 #include "sysemu/arch_init.h"
  39 #include "hw/boards.h"
  40 #include "net/net.h"
  41 #include "hw/scsi/esp.h"
  42 #include "hw/mips/bios.h"
  43 #include "hw/loader.h"
  44 #include "hw/rtc/mc146818rtc.h"
  45 #include "hw/timer/i8254.h"
  46 #include "hw/display/vga.h"
  47 #include "hw/audio/pcspk.h"
  48 #include "hw/input/i8042.h"
  49 #include "hw/sysbus.h"
  50 #include "exec/address-spaces.h"
  51 #include "sysemu/qtest.h"
  52 #include "sysemu/reset.h"
  53 #include "qapi/error.h"
  54 #include "qemu/error-report.h"
  55 #include "qemu/help_option.h"
  56 #ifdef CONFIG_TCG
  57 #include "hw/core/tcg-cpu-ops.h"
  58 #endif /* CONFIG_TCG */
  59
  60 enum jazz_model_e {
  61     JAZZ_MAGNUM,
  62     JAZZ_PICA61,
  63 };
  64
  65 static void main_cpu_reset(void *opaque)
  66 {
  67     MIPSCPU *cpu = opaque;
  68
  69     cpu_reset(CPU(cpu));
  70 }
  71
  72 static uint64_t rtc_read(void *opaque, hwaddr addr, unsigned size)
  73 {
  74     uint8_t val;
  75     address_space_read(&address_space_memory, 0x90000071,
  76                        MEMTXATTRS_UNSPECIFIED, &val, 1);
  77     return val;
  78 }
  79
  80 static void rtc_write(void *opaque, hwaddr addr,
  81                       uint64_t val, unsigned size)
  82 {
  83     uint8_t buf = val & 0xff;
  84     address_space_write(&address_space_memory, 0x90000071,
  85                         MEMTXATTRS_UNSPECIFIED, &buf, 1);
  86 }
  87
  88 static const MemoryRegionOps rtc_ops = {
  89     .read = rtc_read,
  90     .write = rtc_write,
  91     .endianness = DEVICE_NATIVE_ENDIAN,
  92 };
  93
  94 static uint64_t dma_dummy_read(void *opaque, hwaddr addr,
  95                                unsigned size)
  96 {
  97     /*
  98      * Nothing to do. That is only to ensure that
  99      * the current DMA acknowledge cycle is completed.
 100      */
 101     return 0xff;
 102 }
 103
 104 static void dma_dummy_write(void *opaque, hwaddr addr,
 105                             uint64_t val, unsigned size)
 106 {
 107     /*
 108      * Nothing to do. That is only to ensure that
 109      * the current DMA acknowledge cycle is completed.
 110      */
 111 }
 112
 113 static const MemoryRegionOps dma_dummy_ops = {
 114     .read = dma_dummy_read,
 115     .write = dma_dummy_write,
 116     .endianness = DEVICE_NATIVE_ENDIAN,
 117 };
 118
 119 #define MAGNUM_BIOS_SIZE_MAX 0x7e000
 120 #define MAGNUM_BIOS_SIZE                                                       \
 121         (BIOS_SIZE < MAGNUM_BIOS_SIZE_MAX ? BIOS_SIZE : MAGNUM_BIOS_SIZE_MAX)
 122
 123 #if defined(CONFIG_TCG) && !defined(CONFIG_USER_ONLY)
 124 static void (*real_do_transaction_failed)(CPUState *cpu, hwaddr physaddr,
 125                                           vaddr addr, unsigned size,
 126                                           MMUAccessType access_type,
 127                                           int mmu_idx, MemTxAttrs attrs,
 128                                           MemTxResult response,
 129                                           uintptr_t retaddr);
 130
 131 static void mips_jazz_do_transaction_failed(CPUState *cs, hwaddr physaddr,
 132                                             vaddr addr, unsigned size,
 133                                             MMUAccessType access_type,
 134                                             int mmu_idx, MemTxAttrs attrs,
 135                                             MemTxResult response,
 136                                             uintptr_t retaddr)
 137 {
 138     if (access_type != MMU_INST_FETCH) {
 139         /* ignore invalid access (ie do not raise exception) */
 140         return;
 141     }
 142     (*real_do_transaction_failed)(cs, physaddr, addr, size, access_type,
 143                                   mmu_idx, attrs, response, retaddr);
 144 }
 145 #endif /* CONFIG_TCG && !CONFIG_USER_ONLY */
 146
 147 static void mips_jazz_init(MachineState *machine,
 148                            enum jazz_model_e jazz_model)
 149 {
 150     MemoryRegion *address_space = get_system_memory();
 151     char *filename;
 152     int bios_size, n;
 153     Clock *cpuclk;
 154     MIPSCPU *cpu;
 155     CPUClass *cc;
 156     CPUMIPSState *env;
 157     qemu_irq *i8259;
 158     rc4030_dma *dmas;
 159     IOMMUMemoryRegion *rc4030_dma_mr;
 160     MemoryRegion *isa_mem = g_new(MemoryRegion, 1);
 161     MemoryRegion *isa_io = g_new(MemoryRegion, 1);
 162     MemoryRegion *rtc = g_new(MemoryRegion, 1);
 163     MemoryRegion *i8042 = g_new(MemoryRegion, 1);
 164     MemoryRegion *dma_dummy = g_new(MemoryRegion, 1);
 165     NICInfo *nd;
 166     DeviceState *dev, *rc4030;
 167     SysBusDevice *sysbus;
 168     ISABus *isa_bus;
 169     ISADevice *pit;
 170     DriveInfo *fds[MAX_FD];
 171     MemoryRegion *bios = g_new(MemoryRegion, 1);
 172     MemoryRegion *bios2 = g_new(MemoryRegion, 1);
 173     SysBusESPState *sysbus_esp;
 174     ESPState *esp;
 175     static const struct {
 176         unsigned freq_hz;
 177         unsigned pll_mult;
 178     } ext_clk[] = {
 179         [JAZZ_MAGNUM] = {50000000, 2},
 180         [JAZZ_PICA61] = {33333333, 4},
 181     };
 182
 183     if (machine->ram_size > 256 * MiB) {
 184         error_report("RAM size more than 256Mb is not supported");
 185         exit(EXIT_FAILURE);
 186     }
 187
 188     cpuclk = clock_new(OBJECT(machine), "cpu-refclk");
 189     clock_set_hz(cpuclk, ext_clk[jazz_model].freq_hz
 190                          * ext_clk[jazz_model].pll_mult);
 191
 192     /* init CPUs */
 193     cpu = mips_cpu_create_with_clock(machine->cpu_type, cpuclk);
 194     env = &cpu->env;
 195     qemu_register_reset(main_cpu_reset, cpu);
 196
 197     /*
 198      * Chipset returns 0 in invalid reads and do not raise data exceptions.
 199      * However, we can't simply add a global memory region to catch
 200      * everything, as this would make all accesses including instruction
 201      * accesses be ignored and not raise exceptions.
 202      * So instead we hijack the do_transaction_failed method on the CPU, and
 203      * do not raise exceptions for data access.
 204      *
 205      * NOTE: this behaviour of raising exceptions for bad instruction
 206      * fetches but not bad data accesses was added in commit 54e755588cf1e9
 207      * to restore behaviour broken by c658b94f6e8c206, but it is not clear
 208      * whether the real hardware behaves this way. It is possible that
 209      * real hardware ignores bad instruction fetches as well -- if so then
 210      * we could replace this hijacking of CPU methods with a simple global
 211      * memory region that catches all memory accesses, as we do on Malta.
 212      */
 213     cc = CPU_GET_CLASS(cpu);
 214 #if defined(CONFIG_TCG) && !defined(CONFIG_USER_ONLY)
 215     real_do_transaction_failed = cc->tcg_ops->do_transaction_failed;
 216     cc->tcg_ops->do_transaction_failed = mips_jazz_do_transaction_failed;
 217 #endif /* CONFIG_TCG && !CONFIG_USER_ONLY */
 218
 219     /* allocate RAM */
 220     memory_region_add_subregion(address_space, 0, machine->ram);
 221
 222     memory_region_init_rom(bios, NULL, "mips_jazz.bios", MAGNUM_BIOS_SIZE,
 223                            &error_fatal);
 224     memory_region_init_alias(bios2, NULL, "mips_jazz.bios", bios,
 225                              0, MAGNUM_BIOS_SIZE);
 226     memory_region_add_subregion(address_space, 0x1fc00000LL, bios);
 227     memory_region_add_subregion(address_space, 0xfff00000LL, bios2);
 228
 229     /* load the BIOS image. */
 230     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, machine->firmware ?: BIOS_FILENAME);
 231     if (filename) {
 232         bios_size = load_image_targphys(filename, 0xfff00000LL,
 233                                         MAGNUM_BIOS_SIZE);
 234         g_free(filename);
 235     } else {
 236         bios_size = -1;
 237     }
 238     if ((bios_size < 0 || bios_size > MAGNUM_BIOS_SIZE)
 239         && machine->firmware && !qtest_enabled()) {
 240         error_report("Could not load MIPS bios '%s'", machine->firmware);
 241         exit(1);
 242     }
 243
 244     /* Init CPU internal devices */
 245     cpu_mips_irq_init_cpu(cpu);
 246     cpu_mips_clock_init(cpu);
 247
 248     /* Chipset */
 249     rc4030 = rc4030_init(&dmas, &rc4030_dma_mr);
 250     sysbus = SYS_BUS_DEVICE(rc4030);
 251     sysbus_connect_irq(sysbus, 0, env->irq[6]);
 252     sysbus_connect_irq(sysbus, 1, env->irq[3]);
 253     memory_region_add_subregion(address_space, 0x80000000,
 254                                 sysbus_mmio_get_region(sysbus, 0));
 255     memory_region_add_subregion(address_space, 0xf0000000,
 256                                 sysbus_mmio_get_region(sysbus, 1));
 257     memory_region_init_io(dma_dummy, NULL, &dma_dummy_ops,
 258                           NULL, "dummy_dma", 0x1000);
 259     memory_region_add_subregion(address_space, 0x8000d000, dma_dummy);
 260
 261     /* ISA bus: IO space at 0x90000000, mem space at 0x91000000 */
 262     memory_region_init(isa_io, NULL, "isa-io", 0x00010000);
 263     memory_region_init(isa_mem, NULL, "isa-mem", 0x01000000);
 264     memory_region_add_subregion(address_space, 0x90000000, isa_io);
 265     memory_region_add_subregion(address_space, 0x91000000, isa_mem);
 266     isa_bus = isa_bus_new(NULL, isa_mem, isa_io, &error_abort);
 267
 268     /* ISA devices */
 269     i8259 = i8259_init(isa_bus, env->irq[4]);
 270     isa_bus_irqs(isa_bus, i8259);
 271     i8257_dma_init(isa_bus, 0);
 272     pit = i8254_pit_init(isa_bus, 0x40, 0, NULL);
 273     pcspk_init(isa_new(TYPE_PC_SPEAKER), isa_bus, pit);
 274
 275     /* Video card */
 276     switch (jazz_model) {
 277     case JAZZ_MAGNUM:
 278         dev = qdev_new("sysbus-g364");
 279         sysbus = SYS_BUS_DEVICE(dev);
 280         sysbus_realize_and_unref(sysbus, &error_fatal);
 281         sysbus_mmio_map(sysbus, 0, 0x60080000);
 282         sysbus_mmio_map(sysbus, 1, 0x40000000);
 283         sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in(rc4030, 3));
 284         {
 285             /* Simple ROM, so user doesn't have to provide one */
 286             MemoryRegion *rom_mr = g_new(MemoryRegion, 1);
 287             memory_region_init_rom(rom_mr, NULL, "g364fb.rom", 0x80000,
 288                                    &error_fatal);
 289             uint8_t *rom = memory_region_get_ram_ptr(rom_mr);
 290             memory_region_add_subregion(address_space, 0x60000000, rom_mr);
 291             rom[0] = 0x10; /* Mips G364 */
 292         }
 293         break;
 294     case JAZZ_PICA61:
 295         isa_vga_mm_init(0x40000000, 0x60000000, 0, get_system_memory());
 296         break;
 297     default:
 298         break;
 299     }
 300
 301     /* Network controller */
 302     for (n = 0; n < nb_nics; n++) {
 303         nd = &nd_table[n];
 304         if (!nd->model) {
 305             nd->model = g_strdup("dp83932");
 306         }
 307         if (strcmp(nd->model, "dp83932") == 0) {
 308             qemu_check_nic_model(nd, "dp83932");
 309
 310             dev = qdev_new("dp8393x");
 311             qdev_set_nic_properties(dev, nd);
 312             qdev_prop_set_uint8(dev, "it_shift", 2);
 313             object_property_set_link(OBJECT(dev), "dma_mr",
 314                                      OBJECT(rc4030_dma_mr), &error_abort);
 315             sysbus = SYS_BUS_DEVICE(dev);
 316             sysbus_realize_and_unref(sysbus, &error_fatal);
 317             sysbus_mmio_map(sysbus, 0, 0x80001000);
 318             sysbus_mmio_map(sysbus, 1, 0x8000b000);
 319             sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in(rc4030, 4));
 320             break;
 321         } else if (is_help_option(nd->model)) {
 322             error_report("Supported NICs: dp83932");
 323             exit(1);
 324         } else {
 325             error_report("Unsupported NIC: %s", nd->model);
 326             exit(1);
 327         }
 328     }
 329
 330     /* SCSI adapter */
 331     dev = qdev_new(TYPE_SYSBUS_ESP);
 332     sysbus_esp = SYSBUS_ESP(dev);
 333     esp = &sysbus_esp->esp;
 334     esp->dma_memory_read = rc4030_dma_read;
 335     esp->dma_memory_write = rc4030_dma_write;
 336     esp->dma_opaque = dmas[0];
 337     sysbus_esp->it_shift = 0;
 338     /* XXX for now until rc4030 has been changed to use DMA enable signal */
 339     esp->dma_enabled = 1;
 340
 341     sysbus = SYS_BUS_DEVICE(dev);
 342     sysbus_realize_and_unref(sysbus, &error_fatal);
 343     sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in(rc4030, 5));
 344     sysbus_mmio_map(sysbus, 0, 0x80002000);
 345
 346     scsi_bus_legacy_handle_cmdline(&esp->bus);
 347
 348     /* Floppy */
 349     for (n = 0; n < MAX_FD; n++) {
 350         fds[n] = drive_get(IF_FLOPPY, 0, n);
 351     }
 352     /* FIXME: we should enable DMA with a custom IsaDma device */
 353     fdctrl_init_sysbus(qdev_get_gpio_in(rc4030, 1), -1, 0x80003000, fds);
 354
 355     /* Real time clock */
 356     mc146818_rtc_init(isa_bus, 1980, NULL);
 357     memory_region_init_io(rtc, NULL, &rtc_ops, NULL, "rtc", 0x1000);
 358     memory_region_add_subregion(address_space, 0x80004000, rtc);
 359
 360     /* Keyboard (i8042) */
 361     i8042_mm_init(qdev_get_gpio_in(rc4030, 6), qdev_get_gpio_in(rc4030, 7),
 362                   i8042, 0x1000, 0x1);
 363     memory_region_add_subregion(address_space, 0x80005000, i8042);
 364
 365     /* Serial ports */
 366     if (serial_hd(0)) {
 367         serial_mm_init(address_space, 0x80006000, 0,
 368                        qdev_get_gpio_in(rc4030, 8), 8000000 / 16,
 369                        serial_hd(0), DEVICE_NATIVE_ENDIAN);
 370     }
 371     if (serial_hd(1)) {
 372         serial_mm_init(address_space, 0x80007000, 0,
 373                        qdev_get_gpio_in(rc4030, 9), 8000000 / 16,
 374                        serial_hd(1), DEVICE_NATIVE_ENDIAN);
 375     }
 376
 377     /* Parallel port */
 378     if (parallel_hds[0])
 379         parallel_mm_init(address_space, 0x80008000, 0,
 380                          qdev_get_gpio_in(rc4030, 0), parallel_hds[0]);
 381
 382     /* FIXME: missing Jazz sound at 0x8000c000, rc4030[2] */
 383
 384     /* NVRAM */
 385     dev = qdev_new("ds1225y");
 386     sysbus = SYS_BUS_DEVICE(dev);
 387     sysbus_realize_and_unref(sysbus, &error_fatal);
 388     sysbus_mmio_map(sysbus, 0, 0x80009000);
 389
 390     /* LED indicator */
 391     sysbus_create_simple("jazz-led", 0x8000f000, NULL);
 392
 393     g_free(dmas);
 394 }
 395
 396 static
 397 void mips_magnum_init(MachineState *machine)
 398 {
 399     mips_jazz_init(machine, JAZZ_MAGNUM);
 400 }
 401
 402 static
 403 void mips_pica61_init(MachineState *machine)
 404 {
 405     mips_jazz_init(machine, JAZZ_PICA61);
 406 }
 407
 408 static void mips_magnum_class_init(ObjectClass *oc, void *data)
 409 {
 410     MachineClass *mc = MACHINE_CLASS(oc);
 411
 412     mc->desc = "MIPS Magnum";
 413     mc->init = mips_magnum_init;
 414     mc->block_default_type = IF_SCSI;
 415     mc->default_cpu_type = MIPS_CPU_TYPE_NAME("R4000");
 416     mc->default_ram_id = "mips_jazz.ram";
 417 }
 418
 419 static const TypeInfo mips_magnum_type = {
 420     .name = MACHINE_TYPE_NAME("magnum"),
 421     .parent = TYPE_MACHINE,
 422     .class_init = mips_magnum_class_init,
 423 };
 424
 425 static void mips_pica61_class_init(ObjectClass *oc, void *data)
 426 {
 427     MachineClass *mc = MACHINE_CLASS(oc);
 428
 429     mc->desc = "Acer Pica 61";
 430     mc->init = mips_pica61_init;
 431     mc->block_default_type = IF_SCSI;
 432     mc->default_cpu_type = MIPS_CPU_TYPE_NAME("R4000");
 433     mc->default_ram_id = "mips_jazz.ram";
 434 }
 435
 436 static const TypeInfo mips_pica61_type = {
 437     .name = MACHINE_TYPE_NAME("pica61"),
 438     .parent = TYPE_MACHINE,
 439     .class_init = mips_pica61_class_init,
 440 };
 441
 442 static void mips_jazz_machine_init(void)
 443 {
 444     type_register_static(&mips_magnum_type);
 445     type_register_static(&mips_pica61_type);
 446 }
 447
 448 type_init(mips_jazz_machine_init)