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
  46 enum jazz_model_e
  47 {
  48     JAZZ_MAGNUM,
  49     JAZZ_PICA61,
  50 };
  51
  52 static void main_cpu_reset(void *opaque)
  53 {
  54     MIPSCPU *cpu = opaque;
  55
  56     cpu_reset(CPU(cpu));
  57 }
  58
  59 static uint64_t rtc_read(void *opaque, hwaddr addr, unsigned size)
  60 {
  61     return cpu_inw(0x71);
  62 }
  63
  64 static void rtc_write(void *opaque, hwaddr addr,
  65                       uint64_t val, unsigned size)
  66 {
  67     cpu_outw(0x71, val & 0xff);
  68 }
  69
  70 static const MemoryRegionOps rtc_ops = {
  71     .read = rtc_read,
  72     .write = rtc_write,
  73     .endianness = DEVICE_NATIVE_ENDIAN,
  74 };
  75
  76 static uint64_t dma_dummy_read(void *opaque, hwaddr addr,
  77                                unsigned size)
  78 {
  79     /* Nothing to do. That is only to ensure that
  80      * the current DMA acknowledge cycle is completed. */
  81     return 0xff;
  82 }
  83
  84 static void dma_dummy_write(void *opaque, hwaddr addr,
  85                             uint64_t val, unsigned size)
  86 {
  87     /* Nothing to do. That is only to ensure that
  88      * the current DMA acknowledge cycle is completed. */
  89 }
  90
  91 static const MemoryRegionOps dma_dummy_ops = {
  92     .read = dma_dummy_read,
  93     .write = dma_dummy_write,
  94     .endianness = DEVICE_NATIVE_ENDIAN,
  95 };
  96
  97 #define MAGNUM_BIOS_SIZE_MAX 0x7e000
  98 #define MAGNUM_BIOS_SIZE (BIOS_SIZE < MAGNUM_BIOS_SIZE_MAX ? BIOS_SIZE : MAGNUM_BIOS_SIZE_MAX)
  99
 100 static void cpu_request_exit(void *opaque, int irq, int level)
 101 {
 102     CPUState *cpu = current_cpu;
 103
 104     if (cpu && level) {
 105         cpu_exit(cpu);
 106     }
 107 }
 108
 109 static void mips_jazz_init(MemoryRegion *address_space,
 110                            MemoryRegion *address_space_io,
 111                            ram_addr_t ram_size,
 112                            const char *cpu_model,
 113                            enum jazz_model_e jazz_model)
 114 {
 115     char *filename;
 116     int bios_size, n;
 117     MIPSCPU *cpu;
 118     CPUMIPSState *env;
 119     qemu_irq *rc4030, *i8259;
 120     rc4030_dma *dmas;
 121     void* rc4030_opaque;
 122     MemoryRegion *isa = g_new(MemoryRegion, 1);
 123     MemoryRegion *rtc = g_new(MemoryRegion, 1);
 124     MemoryRegion *i8042 = g_new(MemoryRegion, 1);
 125     MemoryRegion *dma_dummy = g_new(MemoryRegion, 1);
 126     NICInfo *nd;
 127     DeviceState *dev;
 128     SysBusDevice *sysbus;
 129     ISABus *isa_bus;
 130     ISADevice *pit;
 131     DriveInfo *fds[MAX_FD];
 132     qemu_irq esp_reset, dma_enable;
 133     qemu_irq *cpu_exit_irq;
 134     MemoryRegion *ram = g_new(MemoryRegion, 1);
 135     MemoryRegion *bios = g_new(MemoryRegion, 1);
 136     MemoryRegion *bios2 = g_new(MemoryRegion, 1);
 137
 138     /* init CPUs */
 139     if (cpu_model == NULL) {
 140 #ifdef TARGET_MIPS64
 141         cpu_model = "R4000";
 142 #else
 143         /* FIXME: All wrong, this maybe should be R3000 for the older JAZZs. */
 144         cpu_model = "24Kf";
 145 #endif
 146     }
 147     cpu = cpu_mips_init(cpu_model);
 148     if (cpu == NULL) {
 149         fprintf(stderr, "Unable to find CPU definition\n");
 150         exit(1);
 151     }
 152     env = &cpu->env;
 153     qemu_register_reset(main_cpu_reset, cpu);
 154
 155     /* allocate RAM */
 156     memory_region_init_ram(ram, NULL, "mips_jazz.ram", ram_size);
 157     vmstate_register_ram_global(ram);
 158     memory_region_add_subregion(address_space, 0, ram);
 159
 160     memory_region_init_ram(bios, NULL, "mips_jazz.bios", MAGNUM_BIOS_SIZE);
 161     vmstate_register_ram_global(bios);
 162     memory_region_set_readonly(bios, true);
 163     memory_region_init_alias(bios2, NULL, "mips_jazz.bios", bios,
 164                              0, MAGNUM_BIOS_SIZE);
 165     memory_region_add_subregion(address_space, 0x1fc00000LL, bios);
 166     memory_region_add_subregion(address_space, 0xfff00000LL, bios2);
 167
 168     /* load the BIOS image. */
 169     if (bios_name == NULL)
 170         bios_name = BIOS_FILENAME;
 171     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
 172     if (filename) {
 173         bios_size = load_image_targphys(filename, 0xfff00000LL,
 174                                         MAGNUM_BIOS_SIZE);
 175         g_free(filename);
 176     } else {
 177         bios_size = -1;
 178     }
 179     if (bios_size < 0 || bios_size > MAGNUM_BIOS_SIZE) {
 180         fprintf(stderr, "qemu: Warning, could not load MIPS bios '%s'\n",
 181                 bios_name);
 182     }
 183
 184     /* Init CPU internal devices */
 185     cpu_mips_irq_init_cpu(env);
 186     cpu_mips_clock_init(env);
 187
 188     /* Chipset */
 189     rc4030_opaque = rc4030_init(env->irq[6], env->irq[3], &rc4030, &dmas,
 190                                 address_space);
 191     memory_region_init_io(dma_dummy, NULL, &dma_dummy_ops, NULL, "dummy_dma", 0x1000);
 192     memory_region_add_subregion(address_space, 0x8000d000, dma_dummy);
 193
 194     /* ISA devices */
 195     isa_bus = isa_bus_new(NULL, address_space_io);
 196     i8259 = i8259_init(isa_bus, env->irq[4]);
 197     isa_bus_irqs(isa_bus, i8259);
 198     cpu_exit_irq = qemu_allocate_irqs(cpu_request_exit, NULL, 1);
 199     DMA_init(0, cpu_exit_irq);
 200     pit = pit_init(isa_bus, 0x40, 0, NULL);
 201     pcspk_init(isa_bus, pit);
 202
 203     /* ISA IO space at 0x90000000 */
 204     memory_region_init_alias(isa, NULL, "isa_mmio",
 205                              get_system_io(), 0, 0x01000000);
 206     memory_region_add_subregion(address_space, 0x90000000, isa);
 207     isa_mem_base = 0x11000000;
 208
 209     /* Video card */
 210     switch (jazz_model) {
 211     case JAZZ_MAGNUM:
 212         dev = qdev_create(NULL, "sysbus-g364");
 213         qdev_init_nofail(dev);
 214         sysbus = SYS_BUS_DEVICE(dev);
 215         sysbus_mmio_map(sysbus, 0, 0x60080000);
 216         sysbus_mmio_map(sysbus, 1, 0x40000000);
 217         sysbus_connect_irq(sysbus, 0, rc4030[3]);
 218         {
 219             /* Simple ROM, so user doesn't have to provide one */
 220             MemoryRegion *rom_mr = g_new(MemoryRegion, 1);
 221             memory_region_init_ram(rom_mr, NULL, "g364fb.rom", 0x80000);
 222             vmstate_register_ram_global(rom_mr);
 223             memory_region_set_readonly(rom_mr, true);
 224             uint8_t *rom = memory_region_get_ram_ptr(rom_mr);
 225             memory_region_add_subregion(address_space, 0x60000000, rom_mr);
 226             rom[0] = 0x10; /* Mips G364 */
 227         }
 228         break;
 229     case JAZZ_PICA61:
 230         isa_vga_mm_init(0x40000000, 0x60000000, 0, get_system_memory());
 231         break;
 232     default:
 233         break;
 234     }
 235
 236     /* Network controller */
 237     for (n = 0; n < nb_nics; n++) {
 238         nd = &nd_table[n];
 239         if (!nd->model)
 240             nd->model = g_strdup("dp83932");
 241         if (strcmp(nd->model, "dp83932") == 0) {
 242             dp83932_init(nd, 0x80001000, 2, get_system_memory(), rc4030[4],
 243                          rc4030_opaque, rc4030_dma_memory_rw);
 244             break;
 245         } else if (is_help_option(nd->model)) {
 246             fprintf(stderr, "qemu: Supported NICs: dp83932\n");
 247             exit(1);
 248         } else {
 249             fprintf(stderr, "qemu: Unsupported NIC: %s\n", nd->model);
 250             exit(1);
 251         }
 252     }
 253
 254     /* SCSI adapter */
 255     esp_init(0x80002000, 0,
 256              rc4030_dma_read, rc4030_dma_write, dmas[0],
 257              rc4030[5], &esp_reset, &dma_enable);
 258
 259     /* Floppy */
 260     if (drive_get_max_bus(IF_FLOPPY) >= MAX_FD) {
 261         fprintf(stderr, "qemu: too many floppy drives\n");
 262         exit(1);
 263     }
 264     for (n = 0; n < MAX_FD; n++) {
 265         fds[n] = drive_get(IF_FLOPPY, 0, n);
 266     }
 267     fdctrl_init_sysbus(rc4030[1], 0, 0x80003000, fds);
 268
 269     /* Real time clock */
 270     rtc_init(isa_bus, 1980, NULL);
 271     memory_region_init_io(rtc, NULL, &rtc_ops, NULL, "rtc", 0x1000);
 272     memory_region_add_subregion(address_space, 0x80004000, rtc);
 273
 274     /* Keyboard (i8042) */
 275     i8042_mm_init(rc4030[6], rc4030[7], i8042, 0x1000, 0x1);
 276     memory_region_add_subregion(address_space, 0x80005000, i8042);
 277
 278     /* Serial ports */
 279     if (serial_hds[0]) {
 280         serial_mm_init(address_space, 0x80006000, 0, rc4030[8], 8000000/16,
 281                        serial_hds[0], DEVICE_NATIVE_ENDIAN);
 282     }
 283     if (serial_hds[1]) {
 284         serial_mm_init(address_space, 0x80007000, 0, rc4030[9], 8000000/16,
 285                        serial_hds[1], DEVICE_NATIVE_ENDIAN);
 286     }
 287
 288     /* Parallel port */
 289     if (parallel_hds[0])
 290         parallel_mm_init(address_space, 0x80008000, 0, rc4030[0],
 291                          parallel_hds[0]);
 292
 293     /* FIXME: missing Jazz sound at 0x8000c000, rc4030[2] */
 294
 295     /* NVRAM */
 296     dev = qdev_create(NULL, "ds1225y");
 297     qdev_init_nofail(dev);
 298     sysbus = SYS_BUS_DEVICE(dev);
 299     sysbus_mmio_map(sysbus, 0, 0x80009000);
 300
 301     /* LED indicator */
 302     sysbus_create_simple("jazz-led", 0x8000f000, NULL);
 303 }
 304
 305 static
 306 void mips_magnum_init(QEMUMachineInitArgs *args)
 307 {
 308     ram_addr_t ram_size = args->ram_size;
 309     const char *cpu_model = args->cpu_model;
 310         mips_jazz_init(get_system_memory(), get_system_io(),
 311                        ram_size, cpu_model, JAZZ_MAGNUM);
 312 }
 313
 314 static
 315 void mips_pica61_init(QEMUMachineInitArgs *args)
 316 {
 317     ram_addr_t ram_size = args->ram_size;
 318     const char *cpu_model = args->cpu_model;
 319     mips_jazz_init(get_system_memory(), get_system_io(),
 320                    ram_size, cpu_model, JAZZ_PICA61);
 321 }
 322
 323 static QEMUMachine mips_magnum_machine = {
 324     .name = "magnum",
 325     .desc = "MIPS Magnum",
 326     .init = mips_magnum_init,
 327     .block_default_type = IF_SCSI,
 328     DEFAULT_MACHINE_OPTIONS,
 329 };
 330
 331 static QEMUMachine mips_pica61_machine = {
 332     .name = "pica61",
 333     .desc = "Acer Pica 61",
 334     .init = mips_pica61_init,
 335     .block_default_type = IF_SCSI,
 336     DEFAULT_MACHINE_OPTIONS,
 337 };
 338
 339 static void mips_jazz_machine_init(void)
 340 {
 341     qemu_register_machine(&mips_magnum_machine);
 342     qemu_register_machine(&mips_pica61_machine);
 343 }
 344
 345 machine_init(mips_jazz_machine_init);