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 "audio/audio.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
  40 enum jazz_model_e
  41 {
  42     JAZZ_MAGNUM,
  43     JAZZ_PICA61,
  44 };
  45
  46 static void main_cpu_reset(void *opaque)
  47 {
  48     CPUState *env = opaque;
  49     cpu_reset(env);
  50 }
  51
  52 static uint32_t rtc_readb(void *opaque, target_phys_addr_t addr)
  53 {
  54     return cpu_inw(0x71);
  55 }
  56
  57 static void rtc_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
  58 {
  59     cpu_outw(0x71, val & 0xff);
  60 }
  61
  62 static CPUReadMemoryFunc * const rtc_read[3] = {
  63     rtc_readb,
  64     rtc_readb,
  65     rtc_readb,
  66 };
  67
  68 static CPUWriteMemoryFunc * const rtc_write[3] = {
  69     rtc_writeb,
  70     rtc_writeb,
  71     rtc_writeb,
  72 };
  73
  74 static void dma_dummy_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
  75 {
  76     /* Nothing to do. That is only to ensure that
  77      * the current DMA acknowledge cycle is completed. */
  78 }
  79
  80 static CPUReadMemoryFunc * const dma_dummy_read[3] = {
  81     NULL,
  82     NULL,
  83     NULL,
  84 };
  85
  86 static CPUWriteMemoryFunc * const dma_dummy_write[3] = {
  87     dma_dummy_writeb,
  88     dma_dummy_writeb,
  89     dma_dummy_writeb,
  90 };
  91
  92 static void audio_init(qemu_irq *pic)
  93 {
  94     struct soundhw *c;
  95     int audio_enabled = 0;
  96
  97     for (c = soundhw; !audio_enabled && c->name; ++c) {
  98         audio_enabled = c->enabled;
  99     }
 100
 101     if (audio_enabled) {
 102         for (c = soundhw; c->name; ++c) {
 103             if (c->enabled) {
 104                 if (c->isa) {
 105                     c->init.init_isa(pic);
 106                 }
 107             }
 108         }
 109     }
 110 }
 111
 112 #define MAGNUM_BIOS_SIZE_MAX 0x7e000
 113 #define MAGNUM_BIOS_SIZE (BIOS_SIZE < MAGNUM_BIOS_SIZE_MAX ? BIOS_SIZE : MAGNUM_BIOS_SIZE_MAX)
 114
 115 static void cpu_request_exit(void *opaque, int irq, int level)
 116 {
 117     CPUState *env = cpu_single_env;
 118
 119     if (env && level) {
 120         cpu_exit(env);
 121     }
 122 }
 123
 124 static
 125 void mips_jazz_init (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     CPUState *env;
 132     qemu_irq *rc4030, *i8259;
 133     rc4030_dma *dmas;
 134     void* rc4030_opaque;
 135     int s_rtc, s_dma_dummy;
 136     NICInfo *nd;
 137     PITState *pit;
 138     DriveInfo *fds[MAX_FD];
 139     qemu_irq esp_reset;
 140     qemu_irq *cpu_exit_irq;
 141     ram_addr_t ram_offset;
 142     ram_addr_t bios_offset;
 143
 144     /* init CPUs */
 145     if (cpu_model == NULL) {
 146 #ifdef TARGET_MIPS64
 147         cpu_model = "R4000";
 148 #else
 149         /* FIXME: All wrong, this maybe should be R3000 for the older JAZZs. */
 150         cpu_model = "24Kf";
 151 #endif
 152     }
 153     env = cpu_init(cpu_model);
 154     if (!env) {
 155         fprintf(stderr, "Unable to find CPU definition\n");
 156         exit(1);
 157     }
 158     qemu_register_reset(main_cpu_reset, env);
 159
 160     /* allocate RAM */
 161     ram_offset = qemu_ram_alloc(NULL, "mips_jazz.ram", ram_size);
 162     cpu_register_physical_memory(0, ram_size, ram_offset | IO_MEM_RAM);
 163
 164     bios_offset = qemu_ram_alloc(NULL, "mips_jazz.bios", MAGNUM_BIOS_SIZE);
 165     cpu_register_physical_memory(0x1fc00000LL,
 166                                  MAGNUM_BIOS_SIZE, bios_offset | IO_MEM_ROM);
 167     cpu_register_physical_memory(0xfff00000LL,
 168                                  MAGNUM_BIOS_SIZE, bios_offset | IO_MEM_ROM);
 169
 170     /* load the BIOS image. */
 171     if (bios_name == NULL)
 172         bios_name = BIOS_FILENAME;
 173     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
 174     if (filename) {
 175         bios_size = load_image_targphys(filename, 0xfff00000LL,
 176                                         MAGNUM_BIOS_SIZE);
 177         qemu_free(filename);
 178     } else {
 179         bios_size = -1;
 180     }
 181     if (bios_size < 0 || bios_size > MAGNUM_BIOS_SIZE) {
 182         fprintf(stderr, "qemu: Could not load MIPS bios '%s'\n",
 183                 bios_name);
 184         exit(1);
 185     }
 186
 187     /* Init CPU internal devices */
 188     cpu_mips_irq_init_cpu(env);
 189     cpu_mips_clock_init(env);
 190
 191     /* Chipset */
 192     rc4030_opaque = rc4030_init(env->irq[6], env->irq[3], &rc4030, &dmas);
 193     s_dma_dummy = cpu_register_io_memory(dma_dummy_read, dma_dummy_write, NULL);
 194     cpu_register_physical_memory(0x8000d000, 0x00001000, s_dma_dummy);
 195
 196     /* ISA devices */
 197     i8259 = i8259_init(env->irq[4]);
 198     isa_bus_new(NULL);
 199     isa_bus_irqs(i8259);
 200     cpu_exit_irq = qemu_allocate_irqs(cpu_request_exit, NULL, 1);
 201     DMA_init(0, cpu_exit_irq);
 202     pit = pit_init(0x40, i8259[0]);
 203     pcspk_init(pit);
 204
 205     /* ISA IO space at 0x90000000 */
 206 #ifdef TARGET_WORDS_BIGENDIAN
 207     isa_mmio_init(0x90000000, 0x01000000, 1);
 208 #else
 209     isa_mmio_init(0x90000000, 0x01000000, 0);
 210 #endif
 211
 212     isa_mem_base = 0x11000000;
 213
 214     /* Video card */
 215     switch (jazz_model) {
 216     case JAZZ_MAGNUM:
 217         g364fb_mm_init(0x40000000, 0x60000000, 0, rc4030[3]);
 218         break;
 219     case JAZZ_PICA61:
 220         isa_vga_mm_init(0x40000000, 0x60000000, 0);
 221         break;
 222     default:
 223         break;
 224     }
 225
 226     /* Network controller */
 227     for (n = 0; n < nb_nics; n++) {
 228         nd = &nd_table[n];
 229         if (!nd->model)
 230             nd->model = qemu_strdup("dp83932");
 231         if (strcmp(nd->model, "dp83932") == 0) {
 232             dp83932_init(nd, 0x80001000, 2, rc4030[4],
 233                          rc4030_opaque, rc4030_dma_memory_rw);
 234             break;
 235         } else if (strcmp(nd->model, "?") == 0) {
 236             fprintf(stderr, "qemu: Supported NICs: dp83932\n");
 237             exit(1);
 238         } else {
 239             fprintf(stderr, "qemu: Unsupported NIC: %s\n", nd->model);
 240             exit(1);
 241         }
 242     }
 243
 244     /* SCSI adapter */
 245     esp_init(0x80002000, 0,
 246              rc4030_dma_read, rc4030_dma_write, dmas[0],
 247              rc4030[5], &esp_reset);
 248
 249     /* Floppy */
 250     if (drive_get_max_bus(IF_FLOPPY) >= MAX_FD) {
 251         fprintf(stderr, "qemu: too many floppy drives\n");
 252         exit(1);
 253     }
 254     for (n = 0; n < MAX_FD; n++) {
 255         fds[n] = drive_get(IF_FLOPPY, 0, n);
 256     }
 257     fdctrl_init_sysbus(rc4030[1], 0, 0x80003000, fds);
 258
 259     /* Real time clock */
 260     rtc_init(1980, NULL);
 261     s_rtc = cpu_register_io_memory(rtc_read, rtc_write, NULL);
 262     cpu_register_physical_memory(0x80004000, 0x00001000, s_rtc);
 263
 264     /* Keyboard (i8042) */
 265     i8042_mm_init(rc4030[6], rc4030[7], 0x80005000, 0x1000, 0x1);
 266
 267     /* Serial ports */
 268     if (serial_hds[0]) {
 269 #ifdef TARGET_WORDS_BIGENDIAN
 270         serial_mm_init(0x80006000, 0, rc4030[8], 8000000/16, serial_hds[0], 1, 1);
 271 #else
 272         serial_mm_init(0x80006000, 0, rc4030[8], 8000000/16, serial_hds[0], 1, 0);
 273 #endif
 274     }
 275     if (serial_hds[1]) {
 276 #ifdef TARGET_WORDS_BIGENDIAN
 277         serial_mm_init(0x80007000, 0, rc4030[9], 8000000/16, serial_hds[1], 1, 1);
 278 #else
 279         serial_mm_init(0x80007000, 0, rc4030[9], 8000000/16, serial_hds[1], 1, 0);
 280 #endif
 281     }
 282
 283     /* Parallel port */
 284     if (parallel_hds[0])
 285         parallel_mm_init(0x80008000, 0, rc4030[0], parallel_hds[0]);
 286
 287     /* Sound card */
 288     /* FIXME: missing Jazz sound at 0x8000c000, rc4030[2] */
 289     audio_init(i8259);
 290
 291     /* NVRAM: Unprotected at 0x9000, Protected at 0xa000, Read only at 0xb000 */
 292     ds1225y_init(0x80009000, "nvram");
 293
 294     /* LED indicator */
 295     jazz_led_init(0x8000f000);
 296 }
 297
 298 static
 299 void mips_magnum_init (ram_addr_t ram_size,
 300                        const char *boot_device,
 301                        const char *kernel_filename, const char *kernel_cmdline,
 302                        const char *initrd_filename, const char *cpu_model)
 303 {
 304     mips_jazz_init(ram_size, cpu_model, JAZZ_MAGNUM);
 305 }
 306
 307 static
 308 void mips_pica61_init (ram_addr_t ram_size,
 309                        const char *boot_device,
 310                        const char *kernel_filename, const char *kernel_cmdline,
 311                        const char *initrd_filename, const char *cpu_model)
 312 {
 313     mips_jazz_init(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);