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/blockdev.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     return cpu_inw(0x71);
  64 }
  65
  66 static void rtc_write(void *opaque, hwaddr addr,
  67                       uint64_t val, unsigned size)
  68 {
  69     cpu_outw(0x71, val & 0xff);
  70 }
  71
  72 static const MemoryRegionOps rtc_ops = {
  73     .read = rtc_read,
  74     .write = rtc_write,
  75     .endianness = DEVICE_NATIVE_ENDIAN,
  76 };
  77
  78 static uint64_t dma_dummy_read(void *opaque, hwaddr addr,
  79                                unsigned size)
  80 {
  81     /* Nothing to do. That is only to ensure that
  82      * the current DMA acknowledge cycle is completed. */
  83     return 0xff;
  84 }
  85
  86 static void dma_dummy_write(void *opaque, hwaddr addr,
  87                             uint64_t val, unsigned size)
  88 {
  89     /* Nothing to do. That is only to ensure that
  90      * the current DMA acknowledge cycle is completed. */
  91 }
  92
  93 static const MemoryRegionOps dma_dummy_ops = {
  94     .read = dma_dummy_read,
  95     .write = dma_dummy_write,
  96     .endianness = DEVICE_NATIVE_ENDIAN,
  97 };
  98
  99 #define MAGNUM_BIOS_SIZE_MAX 0x7e000
 100 #define MAGNUM_BIOS_SIZE (BIOS_SIZE < MAGNUM_BIOS_SIZE_MAX ? BIOS_SIZE : MAGNUM_BIOS_SIZE_MAX)
 101
 102 static void cpu_request_exit(void *opaque, int irq, int level)
 103 {
 104     CPUState *cpu = current_cpu;
 105
 106     if (cpu && level) {
 107         cpu_exit(cpu);
 108     }
 109 }
 110
 111 static CPUUnassignedAccess real_do_unassigned_access;
 112 static void mips_jazz_do_unassigned_access(CPUState *cpu, hwaddr addr,
 113                                            bool is_write, bool is_exec,
 114                                            int opaque, unsigned size)
 115 {
 116     if (!is_exec) {
 117         /* ignore invalid access (ie do not raise exception) */
 118         return;
 119     }
 120     (*real_do_unassigned_access)(cpu, addr, is_write, is_exec, opaque, size);
 121 }
 122
 123 static void mips_jazz_init(MemoryRegion *address_space,
 124                            MemoryRegion *address_space_io,
 125                            ram_addr_t ram_size,
 126                            const char *cpu_model,
 127                            enum jazz_model_e jazz_model)
 128 {
 129     char *filename;
 130     int bios_size, n;
 131     MIPSCPU *cpu;
 132     CPUClass *cc;
 133     CPUMIPSState *env;
 134     qemu_irq *rc4030, *i8259;
 135     rc4030_dma *dmas;
 136     void* rc4030_opaque;
 137     MemoryRegion *isa = g_new(MemoryRegion, 1);
 138     MemoryRegion *rtc = g_new(MemoryRegion, 1);
 139     MemoryRegion *i8042 = g_new(MemoryRegion, 1);
 140     MemoryRegion *dma_dummy = g_new(MemoryRegion, 1);
 141     NICInfo *nd;
 142     DeviceState *dev;
 143     SysBusDevice *sysbus;
 144     ISABus *isa_bus;
 145     ISADevice *pit;
 146     DriveInfo *fds[MAX_FD];
 147     qemu_irq esp_reset, dma_enable;
 148     qemu_irq *cpu_exit_irq;
 149     MemoryRegion *ram = g_new(MemoryRegion, 1);
 150     MemoryRegion *bios = g_new(MemoryRegion, 1);
 151     MemoryRegion *bios2 = g_new(MemoryRegion, 1);
 152
 153     /* init CPUs */
 154     if (cpu_model == NULL) {
 155 #ifdef TARGET_MIPS64
 156         cpu_model = "R4000";
 157 #else
 158         /* FIXME: All wrong, this maybe should be R3000 for the older JAZZs. */
 159         cpu_model = "24Kf";
 160 #endif
 161     }
 162     cpu = cpu_mips_init(cpu_model);
 163     if (cpu == NULL) {
 164         fprintf(stderr, "Unable to find CPU definition\n");
 165         exit(1);
 166     }
 167     env = &cpu->env;
 168     qemu_register_reset(main_cpu_reset, cpu);
 169
 170     /* Chipset returns 0 in invalid reads and do not raise data exceptions.
 171      * However, we can't simply add a global memory region to catch
 172      * everything, as memory core directly call unassigned_mem_read/write
 173      * on some invalid accesses, which call do_unassigned_access on the
 174      * CPU, which raise an exception.
 175      * Handle that case by hijacking the do_unassigned_access method on
 176      * the CPU, and do not raise exceptions for data access. */
 177     cc = CPU_GET_CLASS(cpu);
 178     real_do_unassigned_access = cc->do_unassigned_access;
 179     cc->do_unassigned_access = mips_jazz_do_unassigned_access;
 180
 181     /* allocate RAM */
 182     memory_region_init_ram(ram, NULL, "mips_jazz.ram", ram_size);
 183     vmstate_register_ram_global(ram);
 184     memory_region_add_subregion(address_space, 0, ram);
 185
 186     memory_region_init_ram(bios, NULL, "mips_jazz.bios", MAGNUM_BIOS_SIZE);
 187     vmstate_register_ram_global(bios);
 188     memory_region_set_readonly(bios, true);
 189     memory_region_init_alias(bios2, NULL, "mips_jazz.bios", bios,
 190                              0, MAGNUM_BIOS_SIZE);
 191     memory_region_add_subregion(address_space, 0x1fc00000LL, bios);
 192     memory_region_add_subregion(address_space, 0xfff00000LL, bios2);
 193
 194     /* load the BIOS image. */
 195     if (bios_name == NULL)
 196         bios_name = BIOS_FILENAME;
 197     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
 198     if (filename) {
 199         bios_size = load_image_targphys(filename, 0xfff00000LL,
 200                                         MAGNUM_BIOS_SIZE);
 201         g_free(filename);
 202     } else {
 203         bios_size = -1;
 204     }
 205     if ((bios_size < 0 || bios_size > MAGNUM_BIOS_SIZE) && !qtest_enabled()) {
 206         error_report("Could not load MIPS bios '%s'", bios_name);
 207         exit(1);
 208     }
 209
 210     /* Init CPU internal devices */
 211     cpu_mips_irq_init_cpu(env);
 212     cpu_mips_clock_init(env);
 213
 214     /* Chipset */
 215     rc4030_opaque = rc4030_init(env->irq[6], env->irq[3], &rc4030, &dmas,
 216                                 address_space);
 217     memory_region_init_io(dma_dummy, NULL, &dma_dummy_ops, NULL, "dummy_dma", 0x1000);
 218     memory_region_add_subregion(address_space, 0x8000d000, dma_dummy);
 219
 220     /* ISA devices */
 221     isa_bus = isa_bus_new(NULL, address_space_io);
 222     i8259 = i8259_init(isa_bus, env->irq[4]);
 223     isa_bus_irqs(isa_bus, i8259);
 224     cpu_exit_irq = qemu_allocate_irqs(cpu_request_exit, NULL, 1);
 225     DMA_init(0, cpu_exit_irq);
 226     pit = pit_init(isa_bus, 0x40, 0, NULL);
 227     pcspk_init(isa_bus, pit);
 228
 229     /* ISA IO space at 0x90000000 */
 230     memory_region_init_alias(isa, NULL, "isa_mmio",
 231                              get_system_io(), 0, 0x01000000);
 232     memory_region_add_subregion(address_space, 0x90000000, isa);
 233     isa_mem_base = 0x11000000;
 234
 235     /* Video card */
 236     switch (jazz_model) {
 237     case JAZZ_MAGNUM:
 238         dev = qdev_create(NULL, "sysbus-g364");
 239         qdev_init_nofail(dev);
 240         sysbus = SYS_BUS_DEVICE(dev);
 241         sysbus_mmio_map(sysbus, 0, 0x60080000);
 242         sysbus_mmio_map(sysbus, 1, 0x40000000);
 243         sysbus_connect_irq(sysbus, 0, rc4030[3]);
 244         {
 245             /* Simple ROM, so user doesn't have to provide one */
 246             MemoryRegion *rom_mr = g_new(MemoryRegion, 1);
 247             memory_region_init_ram(rom_mr, NULL, "g364fb.rom", 0x80000);
 248             vmstate_register_ram_global(rom_mr);
 249             memory_region_set_readonly(rom_mr, true);
 250             uint8_t *rom = memory_region_get_ram_ptr(rom_mr);
 251             memory_region_add_subregion(address_space, 0x60000000, rom_mr);
 252             rom[0] = 0x10; /* Mips G364 */
 253         }
 254         break;
 255     case JAZZ_PICA61:
 256         isa_vga_mm_init(0x40000000, 0x60000000, 0, get_system_memory());
 257         break;
 258     default:
 259         break;
 260     }
 261
 262     /* Network controller */
 263     for (n = 0; n < nb_nics; n++) {
 264         nd = &nd_table[n];
 265         if (!nd->model)
 266             nd->model = g_strdup("dp83932");
 267         if (strcmp(nd->model, "dp83932") == 0) {
 268             dp83932_init(nd, 0x80001000, 2, get_system_memory(), rc4030[4],
 269                          rc4030_opaque, rc4030_dma_memory_rw);
 270             break;
 271         } else if (is_help_option(nd->model)) {
 272             fprintf(stderr, "qemu: Supported NICs: dp83932\n");
 273             exit(1);
 274         } else {
 275             fprintf(stderr, "qemu: Unsupported NIC: %s\n", nd->model);
 276             exit(1);
 277         }
 278     }
 279
 280     /* SCSI adapter */
 281     esp_init(0x80002000, 0,
 282              rc4030_dma_read, rc4030_dma_write, dmas[0],
 283              rc4030[5], &esp_reset, &dma_enable);
 284
 285     /* Floppy */
 286     if (drive_get_max_bus(IF_FLOPPY) >= MAX_FD) {
 287         fprintf(stderr, "qemu: too many floppy drives\n");
 288         exit(1);
 289     }
 290     for (n = 0; n < MAX_FD; n++) {
 291         fds[n] = drive_get(IF_FLOPPY, 0, n);
 292     }
 293     fdctrl_init_sysbus(rc4030[1], 0, 0x80003000, fds);
 294
 295     /* Real time clock */
 296     rtc_init(isa_bus, 1980, NULL);
 297     memory_region_init_io(rtc, NULL, &rtc_ops, NULL, "rtc", 0x1000);
 298     memory_region_add_subregion(address_space, 0x80004000, rtc);
 299
 300     /* Keyboard (i8042) */
 301     i8042_mm_init(rc4030[6], rc4030[7], i8042, 0x1000, 0x1);
 302     memory_region_add_subregion(address_space, 0x80005000, i8042);
 303
 304     /* Serial ports */
 305     if (serial_hds[0]) {
 306         serial_mm_init(address_space, 0x80006000, 0, rc4030[8], 8000000/16,
 307                        serial_hds[0], DEVICE_NATIVE_ENDIAN);
 308     }
 309     if (serial_hds[1]) {
 310         serial_mm_init(address_space, 0x80007000, 0, rc4030[9], 8000000/16,
 311                        serial_hds[1], DEVICE_NATIVE_ENDIAN);
 312     }
 313
 314     /* Parallel port */
 315     if (parallel_hds[0])
 316         parallel_mm_init(address_space, 0x80008000, 0, rc4030[0],
 317                          parallel_hds[0]);
 318
 319     /* FIXME: missing Jazz sound at 0x8000c000, rc4030[2] */
 320
 321     /* NVRAM */
 322     dev = qdev_create(NULL, "ds1225y");
 323     qdev_init_nofail(dev);
 324     sysbus = SYS_BUS_DEVICE(dev);
 325     sysbus_mmio_map(sysbus, 0, 0x80009000);
 326
 327     /* LED indicator */
 328     sysbus_create_simple("jazz-led", 0x8000f000, NULL);
 329 }
 330
 331 static
 332 void mips_magnum_init(MachineState *machine)
 333 {
 334     ram_addr_t ram_size = machine->ram_size;
 335     const char *cpu_model = machine->cpu_model;
 336         mips_jazz_init(get_system_memory(), get_system_io(),
 337                        ram_size, cpu_model, JAZZ_MAGNUM);
 338 }
 339
 340 static
 341 void mips_pica61_init(MachineState *machine)
 342 {
 343     ram_addr_t ram_size = machine->ram_size;
 344     const char *cpu_model = machine->cpu_model;
 345     mips_jazz_init(get_system_memory(), get_system_io(),
 346                    ram_size, cpu_model, JAZZ_PICA61);
 347 }
 348
 349 static QEMUMachine mips_magnum_machine = {
 350     .name = "magnum",
 351     .desc = "MIPS Magnum",
 352     .init = mips_magnum_init,
 353     .block_default_type = IF_SCSI,
 354 };
 355
 356 static QEMUMachine mips_pica61_machine = {
 357     .name = "pica61",
 358     .desc = "Acer Pica 61",
 359     .init = mips_pica61_init,
 360     .block_default_type = IF_SCSI,
 361 };
 362
 363 static void mips_jazz_machine_init(void)
 364 {
 365     qemu_register_machine(&mips_magnum_machine);
 366     qemu_register_machine(&mips_pica61_machine);
 367 }
 368
 369 machine_init(mips_jazz_machine_init);