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 "hw.h"
  26 #include "mips.h"
  27 #include "mips_cpudevs.h"
  28 #include "pc.h"
  29 #include "isa.h"
  30 #include "fdc.h"
  31 #include "sysemu.h"
  32 #include "arch_init.h"
  33 #include "boards.h"
  34 #include "net.h"
  35 #include "esp.h"
  36 #include "mips-bios.h"
  37 #include "loader.h"
  38 #include "mc146818rtc.h"
  39 #include "blockdev.h"
  40 #include "sysbus.h"
  41 #include "exec-memory.h"
  42
  43 enum jazz_model_e
  44 {
  45     JAZZ_MAGNUM,
  46     JAZZ_PICA61,
  47 };
  48
  49 static void main_cpu_reset(void *opaque)
  50 {
  51     CPUState *env = opaque;
  52     cpu_reset(env);
  53 }
  54
  55 static uint64_t rtc_read(void *opaque, target_phys_addr_t addr, unsigned size)
  56 {
  57     return cpu_inw(0x71);
  58 }
  59
  60 static void rtc_write(void *opaque, target_phys_addr_t addr,
  61                       uint64_t val, unsigned size)
  62 {
  63     cpu_outw(0x71, val & 0xff);
  64 }
  65
  66 static const MemoryRegionOps rtc_ops = {
  67     .read = rtc_read,
  68     .write = rtc_write,
  69     .endianness = DEVICE_NATIVE_ENDIAN,
  70 };
  71
  72 static uint64_t dma_dummy_read(void *opaque, target_phys_addr_t addr,
  73                                unsigned size)
  74 {
  75     /* Nothing to do. That is only to ensure that
  76      * the current DMA acknowledge cycle is completed. */
  77     return 0xff;
  78 }
  79
  80 static void dma_dummy_write(void *opaque, target_phys_addr_t addr,
  81                             uint64_t val, unsigned size)
  82 {
  83     /* Nothing to do. That is only to ensure that
  84      * the current DMA acknowledge cycle is completed. */
  85 }
  86
  87 static const MemoryRegionOps dma_dummy_ops = {
  88     .read = dma_dummy_read,
  89     .write = dma_dummy_write,
  90     .endianness = DEVICE_NATIVE_ENDIAN,
  91 };
  92
  93 #define MAGNUM_BIOS_SIZE_MAX 0x7e000
  94 #define MAGNUM_BIOS_SIZE (BIOS_SIZE < MAGNUM_BIOS_SIZE_MAX ? BIOS_SIZE : MAGNUM_BIOS_SIZE_MAX)
  95
  96 static void cpu_request_exit(void *opaque, int irq, int level)
  97 {
  98     CPUState *env = cpu_single_env;
  99
 100     if (env && level) {
 101         cpu_exit(env);
 102     }
 103 }
 104
 105 static void mips_jazz_init(MemoryRegion *address_space,
 106                            MemoryRegion *address_space_io,
 107                            ram_addr_t ram_size,
 108                            const char *cpu_model,
 109                            enum jazz_model_e jazz_model)
 110 {
 111     char *filename;
 112     int bios_size, n;
 113     CPUState *env;
 114     qemu_irq *rc4030, *i8259;
 115     rc4030_dma *dmas;
 116     void* rc4030_opaque;
 117     MemoryRegion *rtc = g_new(MemoryRegion, 1);
 118     MemoryRegion *i8042 = g_new(MemoryRegion, 1);
 119     MemoryRegion *dma_dummy = g_new(MemoryRegion, 1);
 120     NICInfo *nd;
 121     DeviceState *dev;
 122     SysBusDevice *sysbus;
 123     ISABus *isa_bus;
 124     ISADevice *pit;
 125     DriveInfo *fds[MAX_FD];
 126     qemu_irq esp_reset, dma_enable;
 127     qemu_irq *cpu_exit_irq;
 128     MemoryRegion *ram = g_new(MemoryRegion, 1);
 129     MemoryRegion *bios = g_new(MemoryRegion, 1);
 130     MemoryRegion *bios2 = g_new(MemoryRegion, 1);
 131
 132     /* init CPUs */
 133     if (cpu_model == NULL) {
 134 #ifdef TARGET_MIPS64
 135         cpu_model = "R4000";
 136 #else
 137         /* FIXME: All wrong, this maybe should be R3000 for the older JAZZs. */
 138         cpu_model = "24Kf";
 139 #endif
 140     }
 141     env = cpu_init(cpu_model);
 142     if (!env) {
 143         fprintf(stderr, "Unable to find CPU definition\n");
 144         exit(1);
 145     }
 146     qemu_register_reset(main_cpu_reset, env);
 147
 148     /* allocate RAM */
 149     memory_region_init_ram(ram, NULL, "mips_jazz.ram", ram_size);
 150     memory_region_add_subregion(address_space, 0, ram);
 151
 152     memory_region_init_ram(bios, NULL, "mips_jazz.bios", MAGNUM_BIOS_SIZE);
 153     memory_region_set_readonly(bios, true);
 154     memory_region_init_alias(bios2, "mips_jazz.bios", bios,
 155                              0, MAGNUM_BIOS_SIZE);
 156     memory_region_add_subregion(address_space, 0x1fc00000LL, bios);
 157     memory_region_add_subregion(address_space, 0xfff00000LL, bios2);
 158
 159     /* load the BIOS image. */
 160     if (bios_name == NULL)
 161         bios_name = BIOS_FILENAME;
 162     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
 163     if (filename) {
 164         bios_size = load_image_targphys(filename, 0xfff00000LL,
 165                                         MAGNUM_BIOS_SIZE);
 166         g_free(filename);
 167     } else {
 168         bios_size = -1;
 169     }
 170     if (bios_size < 0 || bios_size > MAGNUM_BIOS_SIZE) {
 171         fprintf(stderr, "qemu: Could not load MIPS bios '%s'\n",
 172                 bios_name);
 173         exit(1);
 174     }
 175
 176     /* Init CPU internal devices */
 177     cpu_mips_irq_init_cpu(env);
 178     cpu_mips_clock_init(env);
 179
 180     /* Chipset */
 181     rc4030_opaque = rc4030_init(env->irq[6], env->irq[3], &rc4030, &dmas,
 182                                 address_space);
 183     memory_region_init_io(dma_dummy, &dma_dummy_ops, NULL, "dummy_dma", 0x1000);
 184     memory_region_add_subregion(address_space, 0x8000d000, dma_dummy);
 185
 186     /* ISA devices */
 187     isa_bus = isa_bus_new(NULL, address_space_io);
 188     i8259 = i8259_init(isa_bus, env->irq[4]);
 189     isa_bus_irqs(isa_bus, i8259);
 190     cpu_exit_irq = qemu_allocate_irqs(cpu_request_exit, NULL, 1);
 191     DMA_init(0, cpu_exit_irq);
 192     pit = pit_init(isa_bus, 0x40, 0);
 193     pcspk_init(pit);
 194
 195     /* ISA IO space at 0x90000000 */
 196     isa_mmio_init(0x90000000, 0x01000000);
 197     isa_mem_base = 0x11000000;
 198
 199     /* Video card */
 200     switch (jazz_model) {
 201     case JAZZ_MAGNUM:
 202         dev = qdev_create(NULL, "sysbus-g364");
 203         qdev_init_nofail(dev);
 204         sysbus = sysbus_from_qdev(dev);
 205         sysbus_mmio_map(sysbus, 0, 0x60080000);
 206         sysbus_mmio_map(sysbus, 1, 0x40000000);
 207         sysbus_connect_irq(sysbus, 0, rc4030[3]);
 208         {
 209             /* Simple ROM, so user doesn't have to provide one */
 210             MemoryRegion *rom_mr = g_new(MemoryRegion, 1);
 211             memory_region_init_ram(rom_mr, NULL, "g364fb.rom", 0x80000);
 212             memory_region_set_readonly(rom_mr, true);
 213             uint8_t *rom = memory_region_get_ram_ptr(rom_mr);
 214             memory_region_add_subregion(address_space, 0x60000000, rom_mr);
 215             rom[0] = 0x10; /* Mips G364 */
 216         }
 217         break;
 218     case JAZZ_PICA61:
 219         isa_vga_mm_init(0x40000000, 0x60000000, 0, get_system_memory());
 220         break;
 221     default:
 222         break;
 223     }
 224
 225     /* Network controller */
 226     for (n = 0; n < nb_nics; n++) {
 227         nd = &nd_table[n];
 228         if (!nd->model)
 229             nd->model = g_strdup("dp83932");
 230         if (strcmp(nd->model, "dp83932") == 0) {
 231             dp83932_init(nd, 0x80001000, 2, get_system_memory(), rc4030[4],
 232                          rc4030_opaque, rc4030_dma_memory_rw);
 233             break;
 234         } else if (strcmp(nd->model, "?") == 0) {
 235             fprintf(stderr, "qemu: Supported NICs: dp83932\n");
 236             exit(1);
 237         } else {
 238             fprintf(stderr, "qemu: Unsupported NIC: %s\n", nd->model);
 239             exit(1);
 240         }
 241     }
 242
 243     /* SCSI adapter */
 244     esp_init(0x80002000, 0,
 245              rc4030_dma_read, rc4030_dma_write, dmas[0],
 246              rc4030[5], &esp_reset, &dma_enable);
 247
 248     /* Floppy */
 249     if (drive_get_max_bus(IF_FLOPPY) >= MAX_FD) {
 250         fprintf(stderr, "qemu: too many floppy drives\n");
 251         exit(1);
 252     }
 253     for (n = 0; n < MAX_FD; n++) {
 254         fds[n] = drive_get(IF_FLOPPY, 0, n);
 255     }
 256     fdctrl_init_sysbus(rc4030[1], 0, 0x80003000, fds);
 257
 258     /* Real time clock */
 259     rtc_init(isa_bus, 1980, NULL);
 260     memory_region_init_io(rtc, &rtc_ops, NULL, "rtc", 0x1000);
 261     memory_region_add_subregion(address_space, 0x80004000, rtc);
 262
 263     /* Keyboard (i8042) */
 264     i8042_mm_init(rc4030[6], rc4030[7], i8042, 0x1000, 0x1);
 265     memory_region_add_subregion(address_space, 0x80005000, i8042);
 266
 267     /* Serial ports */
 268     if (serial_hds[0]) {
 269         serial_mm_init(address_space, 0x80006000, 0, rc4030[8], 8000000/16,
 270                        serial_hds[0], DEVICE_NATIVE_ENDIAN);
 271     }
 272     if (serial_hds[1]) {
 273         serial_mm_init(address_space, 0x80007000, 0, rc4030[9], 8000000/16,
 274                        serial_hds[1], DEVICE_NATIVE_ENDIAN);
 275     }
 276
 277     /* Parallel port */
 278     if (parallel_hds[0])
 279         parallel_mm_init(address_space, 0x80008000, 0, rc4030[0],
 280                          parallel_hds[0]);
 281
 282     /* Sound card */
 283     /* FIXME: missing Jazz sound at 0x8000c000, rc4030[2] */
 284     audio_init(isa_bus, i8259, NULL);
 285
 286     /* NVRAM */
 287     dev = qdev_create(NULL, "ds1225y");
 288     qdev_init_nofail(dev);
 289     sysbus = sysbus_from_qdev(dev);
 290     sysbus_mmio_map(sysbus, 0, 0x80009000);
 291
 292     /* LED indicator */
 293     jazz_led_init(address_space, 0x8000f000);
 294 }
 295
 296 static
 297 void mips_magnum_init (ram_addr_t ram_size,
 298                        const char *boot_device,
 299                        const char *kernel_filename, const char *kernel_cmdline,
 300                        const char *initrd_filename, const char *cpu_model)
 301 {
 302         mips_jazz_init(get_system_memory(), get_system_io(),
 303                        ram_size, cpu_model, JAZZ_MAGNUM);
 304 }
 305
 306 static
 307 void mips_pica61_init (ram_addr_t ram_size,
 308                        const char *boot_device,
 309                        const char *kernel_filename, const char *kernel_cmdline,
 310                        const char *initrd_filename, const char *cpu_model)
 311 {
 312     mips_jazz_init(get_system_memory(), get_system_io(),
 313                    ram_size, cpu_model, JAZZ_PICA61);
 314 }
 315
 316 static QEMUMachine mips_magnum_machine = {
 317     .name = "magnum",
 318     .desc = "MIPS Magnum",
 319     .init = mips_magnum_init,
 320     .use_scsi = 1,
 321 };
 322
 323 static QEMUMachine mips_pica61_machine = {
 324     .name = "pica61",
 325     .desc = "Acer Pica 61",
 326     .init = mips_pica61_init,
 327     .use_scsi = 1,
 328 };
 329
 330 static void mips_jazz_machine_init(void)
 331 {
 332     qemu_register_machine(&mips_magnum_machine);
 333     qemu_register_machine(&mips_pica61_machine);
 334 }
 335
 336 machine_init(mips_jazz_machine_init);