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 "pc.h"
  28 #include "isa.h"
  29 #include "fdc.h"
  30 #include "sysemu.h"
  31 #include "audio/audio.h"
  32 #include "boards.h"
  33 #include "net.h"
  34 #include "scsi.h"
  35
  36 #ifdef TARGET_WORDS_BIGENDIAN
  37 #define BIOS_FILENAME "mips_bios.bin"
  38 #else
  39 #define BIOS_FILENAME "mipsel_bios.bin"
  40 #endif
  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     CPUState *env = opaque;
  57     return cpu_inw(env, 0x71);
  58 }
  59
  60 static void rtc_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
  61 {
  62     CPUState *env = opaque;
  63     cpu_outw(env, 0x71, val & 0xff);
  64 }
  65
  66 static CPUReadMemoryFunc *rtc_read[3] = {
  67     rtc_readb,
  68     rtc_readb,
  69     rtc_readb,
  70 };
  71
  72 static CPUWriteMemoryFunc *rtc_write[3] = {
  73     rtc_writeb,
  74     rtc_writeb,
  75     rtc_writeb,
  76 };
  77
  78 static void dma_dummy_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
  79 {
  80     /* Nothing to do. That is only to ensure that
  81      * the current DMA acknowledge cycle is completed. */
  82 }
  83
  84 static CPUReadMemoryFunc *dma_dummy_read[3] = {
  85     NULL,
  86     NULL,
  87     NULL,
  88 };
  89
  90 static CPUWriteMemoryFunc *dma_dummy_write[3] = {
  91     dma_dummy_writeb,
  92     dma_dummy_writeb,
  93     dma_dummy_writeb,
  94 };
  95
  96 #ifdef HAS_AUDIO
  97 static void audio_init(qemu_irq *pic)
  98 {
  99     struct soundhw *c;
 100     int audio_enabled = 0;
 101
 102     for (c = soundhw; !audio_enabled && c->name; ++c) {
 103         audio_enabled = c->enabled;
 104     }
 105
 106     if (audio_enabled) {
 107         AudioState *s;
 108
 109         s = AUD_init();
 110         if (s) {
 111             for (c = soundhw; c->name; ++c) {
 112                 if (c->enabled) {
 113                     if (c->isa) {
 114                         c->init.init_isa(s, pic);
 115                     }
 116                 }
 117             }
 118         }
 119     }
 120 }
 121 #endif
 122
 123 #define MAGNUM_BIOS_SIZE_MAX 0x7e000
 124 #define MAGNUM_BIOS_SIZE (BIOS_SIZE < MAGNUM_BIOS_SIZE_MAX ? BIOS_SIZE : MAGNUM_BIOS_SIZE_MAX)
 125
 126 static
 127 void mips_jazz_init (ram_addr_t ram_size, int vga_ram_size,
 128                      const char *cpu_model,
 129                      enum jazz_model_e jazz_model)
 130 {
 131     char buf[1024];
 132     unsigned long bios_offset;
 133     int bios_size, n;
 134     CPUState *env;
 135     qemu_irq *rc4030, *i8259;
 136     rc4030_dma *dmas;
 137     rc4030_dma_function dma_read, dma_write;
 138     void *scsi_hba;
 139     int hd;
 140     int s_rtc, s_dma_dummy;
 141     PITState *pit;
 142     BlockDriverState *fds[MAX_FD];
 143     qemu_irq esp_reset;
 144
 145     /* init CPUs */
 146     if (cpu_model == NULL) {
 147 #ifdef TARGET_MIPS64
 148         cpu_model = "R4000";
 149 #else
 150         /* FIXME: All wrong, this maybe should be R3000 for the older JAZZs. */
 151         cpu_model = "24Kf";
 152 #endif
 153     }
 154     env = cpu_init(cpu_model);
 155     if (!env) {
 156         fprintf(stderr, "Unable to find CPU definition\n");
 157         exit(1);
 158     }
 159     qemu_register_reset(main_cpu_reset, env);
 160
 161     /* allocate RAM */
 162     cpu_register_physical_memory(0, ram_size, IO_MEM_RAM);
 163
 164     /* load the BIOS image. */
 165     bios_offset = ram_size + vga_ram_size;
 166     if (bios_name == NULL)
 167         bios_name = BIOS_FILENAME;
 168     snprintf(buf, sizeof(buf), "%s/%s", bios_dir, bios_name);
 169     bios_size = load_image(buf, phys_ram_base + bios_offset);
 170     if (bios_size < 0 || bios_size > MAGNUM_BIOS_SIZE) {
 171         fprintf(stderr, "qemu: Could not load MIPS bios '%s'\n",
 172                 buf);
 173         exit(1);
 174     }
 175
 176     cpu_register_physical_memory(0x1fc00000LL,
 177                                  MAGNUM_BIOS_SIZE, bios_offset | IO_MEM_ROM);
 178     cpu_register_physical_memory(0xfff00000LL,
 179                                  MAGNUM_BIOS_SIZE, bios_offset | IO_MEM_ROM);
 180
 181     /* Init CPU internal devices */
 182     cpu_mips_irq_init_cpu(env);
 183     cpu_mips_clock_init(env);
 184
 185     /* Chipset */
 186     rc4030 = rc4030_init(env->irq[6], env->irq[3],
 187                          &dmas, &dma_read, &dma_write);
 188     s_dma_dummy = cpu_register_io_memory(0, dma_dummy_read, dma_dummy_write, NULL);
 189     cpu_register_physical_memory(0x8000d000, 0x00001000, s_dma_dummy);
 190
 191     /* ISA devices */
 192     i8259 = i8259_init(env->irq[4]);
 193     DMA_init(0);
 194     pit = pit_init(0x40, i8259[0]);
 195     pcspk_init(pit);
 196
 197     /* ISA IO space at 0x90000000 */
 198     isa_mmio_init(0x90000000, 0x01000000);
 199     isa_mem_base = 0x11000000;
 200
 201     /* Video card */
 202     switch (jazz_model) {
 203     case JAZZ_MAGNUM:
 204         g364fb_mm_init(phys_ram_base + ram_size, ram_size, vga_ram_size,
 205                         0x40000000, 0x60000000, 0, rc4030[3]);
 206         break;
 207     case JAZZ_PICA61:
 208         isa_vga_mm_init(phys_ram_base + ram_size, ram_size, vga_ram_size,
 209                         0x40000000, 0x60000000, 0);
 210         break;
 211     default:
 212         break;
 213     }
 214
 215     /* Network controller */
 216     /* FIXME: missing NS SONIC DP83932 */
 217
 218     /* SCSI adapter */
 219     scsi_hba = esp_init(0x80002000, 0,
 220                         dma_read, dma_write, dmas[0],
 221                         rc4030[5], &esp_reset);
 222     for (n = 0; n < ESP_MAX_DEVS; n++) {
 223         hd = drive_get_index(IF_SCSI, 0, n);
 224         if (hd != -1) {
 225             esp_scsi_attach(scsi_hba, drives_table[hd].bdrv, n);
 226         }
 227     }
 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         int fd = drive_get_index(IF_FLOPPY, 0, n);
 236         if (fd != -1)
 237             fds[n] = drives_table[fd].bdrv;
 238         else
 239             fds[n] = NULL;
 240     }
 241     fdctrl_init(rc4030[1], 0, 1, 0x80003000, fds);
 242
 243     /* Real time clock */
 244     rtc_init(0x70, i8259[8]);
 245     s_rtc = cpu_register_io_memory(0, rtc_read, rtc_write, env);
 246     cpu_register_physical_memory(0x80004000, 0x00001000, s_rtc);
 247
 248     /* Keyboard (i8042) */
 249     i8042_mm_init(rc4030[6], rc4030[7], 0x80005000, 0x1000, 0x1);
 250
 251     /* Serial ports */
 252     if (serial_hds[0])
 253         serial_mm_init(0x80006000, 0, rc4030[8], 8000000/16, serial_hds[0], 1);
 254     if (serial_hds[1])
 255         serial_mm_init(0x80007000, 0, rc4030[9], 8000000/16, serial_hds[1], 1);
 256
 257     /* Parallel port */
 258     if (parallel_hds[0])
 259         parallel_mm_init(0x80008000, 0, rc4030[0], parallel_hds[0]);
 260
 261     /* Sound card */
 262     /* FIXME: missing Jazz sound at 0x8000c000, rc4030[2] */
 263 #ifdef HAS_AUDIO
 264     audio_init(i8259);
 265 #endif
 266
 267     /* NVRAM: Unprotected at 0x9000, Protected at 0xa000, Read only at 0xb000 */
 268     ds1225y_init(0x80009000, "nvram");
 269
 270     /* LED indicator */
 271     jazz_led_init(0x8000f000);
 272 }
 273
 274 static
 275 void mips_magnum_init (ram_addr_t ram_size, int vga_ram_size,
 276                        const char *boot_device,
 277                        const char *kernel_filename, const char *kernel_cmdline,
 278                        const char *initrd_filename, const char *cpu_model)
 279 {
 280     mips_jazz_init(ram_size, vga_ram_size, cpu_model, JAZZ_MAGNUM);
 281 }
 282
 283 static
 284 void mips_pica61_init (ram_addr_t ram_size, int vga_ram_size,
 285                        const char *boot_device,
 286                        const char *kernel_filename, const char *kernel_cmdline,
 287                        const char *initrd_filename, const char *cpu_model)
 288 {
 289     mips_jazz_init(ram_size, vga_ram_size, cpu_model, JAZZ_PICA61);
 290 }
 291
 292 QEMUMachine mips_magnum_machine = {
 293     .name = "magnum",
 294     .desc = "MIPS Magnum",
 295     .init = mips_magnum_init,
 296     .ram_require = MAGNUM_BIOS_SIZE + VGA_RAM_SIZE,
 297     .nodisk_ok = 1,
 298     .use_scsi = 1,
 299 };
 300
 301 QEMUMachine mips_pica61_machine = {
 302     .name = "pica61",
 303     .desc = "Acer Pica 61",
 304     .init = mips_pica61_init,
 305     .ram_require = MAGNUM_BIOS_SIZE + VGA_RAM_SIZE,
 306     .nodisk_ok = 1,
 307     .use_scsi = 1,
 308 };