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
  42 enum jazz_model_e
  43 {
  44     JAZZ_MAGNUM,
  45     JAZZ_PICA61,
  46 };
  47
  48 static void main_cpu_reset(void *opaque)
  49 {
  50     CPUState *env = opaque;
  51     cpu_reset(env);
  52 }
  53
  54 static uint32_t rtc_readb(void *opaque, target_phys_addr_t addr)
  55 {
  56     return cpu_inw(0x71);
  57 }
  58
  59 static void rtc_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
  60 {
  61     cpu_outw(0x71, val & 0xff);
  62 }
  63
  64 static CPUReadMemoryFunc * const rtc_read[3] = {
  65     rtc_readb,
  66     rtc_readb,
  67     rtc_readb,
  68 };
  69
  70 static CPUWriteMemoryFunc * const rtc_write[3] = {
  71     rtc_writeb,
  72     rtc_writeb,
  73     rtc_writeb,
  74 };
  75
  76 static void dma_dummy_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
  77 {
  78     /* Nothing to do. That is only to ensure that
  79      * the current DMA acknowledge cycle is completed. */
  80 }
  81
  82 static CPUReadMemoryFunc * const dma_dummy_read[3] = {
  83     NULL,
  84     NULL,
  85     NULL,
  86 };
  87
  88 static CPUWriteMemoryFunc * const dma_dummy_write[3] = {
  89     dma_dummy_writeb,
  90     dma_dummy_writeb,
  91     dma_dummy_writeb,
  92 };
  93
  94 #define MAGNUM_BIOS_SIZE_MAX 0x7e000
  95 #define MAGNUM_BIOS_SIZE (BIOS_SIZE < MAGNUM_BIOS_SIZE_MAX ? BIOS_SIZE : MAGNUM_BIOS_SIZE_MAX)
  96
  97 static void cpu_request_exit(void *opaque, int irq, int level)
  98 {
  99     CPUState *env = cpu_single_env;
 100
 101     if (env && level) {
 102         cpu_exit(env);
 103     }
 104 }
 105
 106 static
 107 void mips_jazz_init (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     int s_rtc, s_dma_dummy;
 118     NICInfo *nd;
 119     DeviceState *dev;
 120     SysBusDevice *sysbus;
 121     ISADevice *pit;
 122     DriveInfo *fds[MAX_FD];
 123     qemu_irq esp_reset, dma_enable;
 124     qemu_irq *cpu_exit_irq;
 125     ram_addr_t ram_offset;
 126     ram_addr_t bios_offset;
 127
 128     /* init CPUs */
 129     if (cpu_model == NULL) {
 130 #ifdef TARGET_MIPS64
 131         cpu_model = "R4000";
 132 #else
 133         /* FIXME: All wrong, this maybe should be R3000 for the older JAZZs. */
 134         cpu_model = "24Kf";
 135 #endif
 136     }
 137     env = cpu_init(cpu_model);
 138     if (!env) {
 139         fprintf(stderr, "Unable to find CPU definition\n");
 140         exit(1);
 141     }
 142     qemu_register_reset(main_cpu_reset, env);
 143
 144     /* allocate RAM */
 145     ram_offset = qemu_ram_alloc(NULL, "mips_jazz.ram", ram_size);
 146     cpu_register_physical_memory(0, ram_size, ram_offset | IO_MEM_RAM);
 147
 148     bios_offset = qemu_ram_alloc(NULL, "mips_jazz.bios", MAGNUM_BIOS_SIZE);
 149     cpu_register_physical_memory(0x1fc00000LL,
 150                                  MAGNUM_BIOS_SIZE, bios_offset | IO_MEM_ROM);
 151     cpu_register_physical_memory(0xfff00000LL,
 152                                  MAGNUM_BIOS_SIZE, bios_offset | IO_MEM_ROM);
 153
 154     /* load the BIOS image. */
 155     if (bios_name == NULL)
 156         bios_name = BIOS_FILENAME;
 157     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
 158     if (filename) {
 159         bios_size = load_image_targphys(filename, 0xfff00000LL,
 160                                         MAGNUM_BIOS_SIZE);
 161         qemu_free(filename);
 162     } else {
 163         bios_size = -1;
 164     }
 165     if (bios_size < 0 || bios_size > MAGNUM_BIOS_SIZE) {
 166         fprintf(stderr, "qemu: Could not load MIPS bios '%s'\n",
 167                 bios_name);
 168         exit(1);
 169     }
 170
 171     /* Init CPU internal devices */
 172     cpu_mips_irq_init_cpu(env);
 173     cpu_mips_clock_init(env);
 174
 175     /* Chipset */
 176     rc4030_opaque = rc4030_init(env->irq[6], env->irq[3], &rc4030, &dmas);
 177     s_dma_dummy = cpu_register_io_memory(dma_dummy_read, dma_dummy_write, NULL,
 178                                          DEVICE_NATIVE_ENDIAN);
 179     cpu_register_physical_memory(0x8000d000, 0x00001000, s_dma_dummy);
 180
 181     /* ISA devices */
 182     i8259 = i8259_init(env->irq[4]);
 183     isa_bus_new(NULL);
 184     isa_bus_irqs(i8259);
 185     cpu_exit_irq = qemu_allocate_irqs(cpu_request_exit, NULL, 1);
 186     DMA_init(0, cpu_exit_irq);
 187     pit = pit_init(0x40, 0);
 188     pcspk_init(pit);
 189
 190     /* ISA IO space at 0x90000000 */
 191     isa_mmio_init(0x90000000, 0x01000000);
 192     isa_mem_base = 0x11000000;
 193
 194     /* Video card */
 195     switch (jazz_model) {
 196     case JAZZ_MAGNUM:
 197         g364fb_mm_init(0x40000000, 0x60000000, 0, rc4030[3]);
 198         break;
 199     case JAZZ_PICA61:
 200         isa_vga_mm_init(0x40000000, 0x60000000, 0);
 201         break;
 202     default:
 203         break;
 204     }
 205
 206     /* Network controller */
 207     for (n = 0; n < nb_nics; n++) {
 208         nd = &nd_table[n];
 209         if (!nd->model)
 210             nd->model = qemu_strdup("dp83932");
 211         if (strcmp(nd->model, "dp83932") == 0) {
 212             dp83932_init(nd, 0x80001000, 2, rc4030[4],
 213                          rc4030_opaque, rc4030_dma_memory_rw);
 214             break;
 215         } else if (strcmp(nd->model, "?") == 0) {
 216             fprintf(stderr, "qemu: Supported NICs: dp83932\n");
 217             exit(1);
 218         } else {
 219             fprintf(stderr, "qemu: Unsupported NIC: %s\n", nd->model);
 220             exit(1);
 221         }
 222     }
 223
 224     /* SCSI adapter */
 225     esp_init(0x80002000, 0,
 226              rc4030_dma_read, rc4030_dma_write, dmas[0],
 227              rc4030[5], &esp_reset, &dma_enable);
 228
 229     /* Floppy */
 230     if (drive_get_max_bus(IF_FLOPPY) >= MAX_FD) {
 231         fprintf(stderr, "qemu: too many floppy drives\n");
 232         exit(1);
 233     }
 234     for (n = 0; n < MAX_FD; n++) {
 235         fds[n] = drive_get(IF_FLOPPY, 0, n);
 236     }
 237     fdctrl_init_sysbus(rc4030[1], 0, 0x80003000, fds);
 238
 239     /* Real time clock */
 240     rtc_init(1980, NULL);
 241     s_rtc = cpu_register_io_memory(rtc_read, rtc_write, NULL,
 242                                    DEVICE_NATIVE_ENDIAN);
 243     cpu_register_physical_memory(0x80004000, 0x00001000, s_rtc);
 244
 245     /* Keyboard (i8042) */
 246     i8042_mm_init(rc4030[6], rc4030[7], 0x80005000, 0x1000, 0x1);
 247
 248     /* Serial ports */
 249     if (serial_hds[0]) {
 250 #ifdef TARGET_WORDS_BIGENDIAN
 251         serial_mm_init(0x80006000, 0, rc4030[8], 8000000/16, serial_hds[0], 1, 1);
 252 #else
 253         serial_mm_init(0x80006000, 0, rc4030[8], 8000000/16, serial_hds[0], 1, 0);
 254 #endif
 255     }
 256     if (serial_hds[1]) {
 257 #ifdef TARGET_WORDS_BIGENDIAN
 258         serial_mm_init(0x80007000, 0, rc4030[9], 8000000/16, serial_hds[1], 1, 1);
 259 #else
 260         serial_mm_init(0x80007000, 0, rc4030[9], 8000000/16, serial_hds[1], 1, 0);
 261 #endif
 262     }
 263
 264     /* Parallel port */
 265     if (parallel_hds[0])
 266         parallel_mm_init(0x80008000, 0, rc4030[0], parallel_hds[0]);
 267
 268     /* Sound card */
 269     /* FIXME: missing Jazz sound at 0x8000c000, rc4030[2] */
 270     audio_init(i8259, NULL);
 271
 272     /* NVRAM */
 273     dev = qdev_create(NULL, "ds1225y");
 274     qdev_init_nofail(dev);
 275     sysbus = sysbus_from_qdev(dev);
 276     sysbus_mmio_map(sysbus, 0, 0x80009000);
 277
 278     /* LED indicator */
 279     jazz_led_init(0x8000f000);
 280 }
 281
 282 static
 283 void mips_magnum_init (ram_addr_t ram_size,
 284                        const char *boot_device,
 285                        const char *kernel_filename, const char *kernel_cmdline,
 286                        const char *initrd_filename, const char *cpu_model)
 287 {
 288     mips_jazz_init(ram_size, cpu_model, JAZZ_MAGNUM);
 289 }
 290
 291 static
 292 void mips_pica61_init (ram_addr_t ram_size,
 293                        const char *boot_device,
 294                        const char *kernel_filename, const char *kernel_cmdline,
 295                        const char *initrd_filename, const char *cpu_model)
 296 {
 297     mips_jazz_init(ram_size, cpu_model, JAZZ_PICA61);
 298 }
 299
 300 static QEMUMachine mips_magnum_machine = {
 301     .name = "magnum",
 302     .desc = "MIPS Magnum",
 303     .init = mips_magnum_init,
 304     .use_scsi = 1,
 305 };
 306
 307 static QEMUMachine mips_pica61_machine = {
 308     .name = "pica61",
 309     .desc = "Acer Pica 61",
 310     .init = mips_pica61_init,
 311     .use_scsi = 1,
 312 };
 313
 314 static void mips_jazz_machine_init(void)
 315 {
 316     qemu_register_machine(&mips_magnum_machine);
 317     qemu_register_machine(&mips_pica61_machine);
 318 }
 319
 320 machine_init(mips_jazz_machine_init);