hw/ppc405_boards.c

   1 /*
   2  * QEMU PowerPC 405 evaluation boards emulation
   3  *
   4  * Copyright (c) 2007 Jocelyn Mayer
   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 #include "hw.h"
  25 #include "ppc.h"
  26 #include "ppc405.h"
  27 #include "nvram.h"
  28 #include "flash.h"
  29 #include "sysemu.h"
  30 #include "block.h"
  31 #include "boards.h"
  32 #include "qemu-log.h"
  33 #include "loader.h"
  34
  35 #define BIOS_FILENAME "ppc405_rom.bin"
  36 #define BIOS_SIZE (2048 * 1024)
  37
  38 #define KERNEL_LOAD_ADDR 0x00000000
  39 #define INITRD_LOAD_ADDR 0x01800000
  40
  41 #define USE_FLASH_BIOS
  42
  43 #define DEBUG_BOARD_INIT
  44
  45 /*****************************************************************************/
  46 /* PPC405EP reference board (IBM) */
  47 /* Standalone board with:
  48  * - PowerPC 405EP CPU
  49  * - SDRAM (0x00000000)
  50  * - Flash (0xFFF80000)
  51  * - SRAM  (0xFFF00000)
  52  * - NVRAM (0xF0000000)
  53  * - FPGA  (0xF0300000)
  54  */
  55 typedef struct ref405ep_fpga_t ref405ep_fpga_t;
  56 struct ref405ep_fpga_t {
  57     uint8_t reg0;
  58     uint8_t reg1;
  59 };
  60
  61 static uint32_t ref405ep_fpga_readb (void *opaque, target_phys_addr_t addr)
  62 {
  63     ref405ep_fpga_t *fpga;
  64     uint32_t ret;
  65
  66     fpga = opaque;
  67     switch (addr) {
  68     case 0x0:
  69         ret = fpga->reg0;
  70         break;
  71     case 0x1:
  72         ret = fpga->reg1;
  73         break;
  74     default:
  75         ret = 0;
  76         break;
  77     }
  78
  79     return ret;
  80 }
  81
  82 static void ref405ep_fpga_writeb (void *opaque,
  83                                   target_phys_addr_t addr, uint32_t value)
  84 {
  85     ref405ep_fpga_t *fpga;
  86
  87     fpga = opaque;
  88     switch (addr) {
  89     case 0x0:
  90         /* Read only */
  91         break;
  92     case 0x1:
  93         fpga->reg1 = value;
  94         break;
  95     default:
  96         break;
  97     }
  98 }
  99
 100 static uint32_t ref405ep_fpga_readw (void *opaque, target_phys_addr_t addr)
 101 {
 102     uint32_t ret;
 103
 104     ret = ref405ep_fpga_readb(opaque, addr) << 8;
 105     ret |= ref405ep_fpga_readb(opaque, addr + 1);
 106
 107     return ret;
 108 }
 109
 110 static void ref405ep_fpga_writew (void *opaque,
 111                                   target_phys_addr_t addr, uint32_t value)
 112 {
 113     ref405ep_fpga_writeb(opaque, addr, (value >> 8) & 0xFF);
 114     ref405ep_fpga_writeb(opaque, addr + 1, value & 0xFF);
 115 }
 116
 117 static uint32_t ref405ep_fpga_readl (void *opaque, target_phys_addr_t addr)
 118 {
 119     uint32_t ret;
 120
 121     ret = ref405ep_fpga_readb(opaque, addr) << 24;
 122     ret |= ref405ep_fpga_readb(opaque, addr + 1) << 16;
 123     ret |= ref405ep_fpga_readb(opaque, addr + 2) << 8;
 124     ret |= ref405ep_fpga_readb(opaque, addr + 3);
 125
 126     return ret;
 127 }
 128
 129 static void ref405ep_fpga_writel (void *opaque,
 130                                   target_phys_addr_t addr, uint32_t value)
 131 {
 132     ref405ep_fpga_writeb(opaque, addr, (value >> 24) & 0xFF);
 133     ref405ep_fpga_writeb(opaque, addr + 1, (value >> 16) & 0xFF);
 134     ref405ep_fpga_writeb(opaque, addr + 2, (value >> 8) & 0xFF);
 135     ref405ep_fpga_writeb(opaque, addr + 3, value & 0xFF);
 136 }
 137
 138 static CPUReadMemoryFunc * const ref405ep_fpga_read[] = {
 139     &ref405ep_fpga_readb,
 140     &ref405ep_fpga_readw,
 141     &ref405ep_fpga_readl,
 142 };
 143
 144 static CPUWriteMemoryFunc * const ref405ep_fpga_write[] = {
 145     &ref405ep_fpga_writeb,
 146     &ref405ep_fpga_writew,
 147     &ref405ep_fpga_writel,
 148 };
 149
 150 static void ref405ep_fpga_reset (void *opaque)
 151 {
 152     ref405ep_fpga_t *fpga;
 153
 154     fpga = opaque;
 155     fpga->reg0 = 0x00;
 156     fpga->reg1 = 0x0F;
 157 }
 158
 159 static void ref405ep_fpga_init (uint32_t base)
 160 {
 161     ref405ep_fpga_t *fpga;
 162     int fpga_memory;
 163
 164     fpga = qemu_mallocz(sizeof(ref405ep_fpga_t));
 165     fpga_memory = cpu_register_io_memory(ref405ep_fpga_read,
 166                                          ref405ep_fpga_write, fpga);
 167     cpu_register_physical_memory(base, 0x00000100, fpga_memory);
 168     qemu_register_reset(&ref405ep_fpga_reset, fpga);
 169 }
 170
 171 static void ref405ep_init (ram_addr_t ram_size,
 172                            const char *boot_device,
 173                            const char *kernel_filename,
 174                            const char *kernel_cmdline,
 175                            const char *initrd_filename,
 176                            const char *cpu_model)
 177 {
 178     char *filename;
 179     ppc4xx_bd_info_t bd;
 180     CPUPPCState *env;
 181     qemu_irq *pic;
 182     ram_addr_t sram_offset, bios_offset, bdloc;
 183     target_phys_addr_t ram_bases[2], ram_sizes[2];
 184     target_ulong sram_size, bios_size;
 185     //int phy_addr = 0;
 186     //static int phy_addr = 1;
 187     target_ulong kernel_base, kernel_size, initrd_base, initrd_size;
 188     int linux_boot;
 189     int fl_idx, fl_sectors, len;
 190     int ppc_boot_device = boot_device[0];
 191     DriveInfo *dinfo;
 192
 193     /* XXX: fix this */
 194     ram_bases[0] = qemu_ram_alloc(0x08000000);
 195     ram_sizes[0] = 0x08000000;
 196     ram_bases[1] = 0x00000000;
 197     ram_sizes[1] = 0x00000000;
 198     ram_size = 128 * 1024 * 1024;
 199 #ifdef DEBUG_BOARD_INIT
 200     printf("%s: register cpu\n", __func__);
 201 #endif
 202     env = ppc405ep_init(ram_bases, ram_sizes, 33333333, &pic,
 203                         kernel_filename == NULL ? 0 : 1);
 204     /* allocate SRAM */
 205     sram_size = 512 * 1024;
 206     sram_offset = qemu_ram_alloc(sram_size);
 207 #ifdef DEBUG_BOARD_INIT
 208     printf("%s: register SRAM at offset %08lx\n", __func__, sram_offset);
 209 #endif
 210     cpu_register_physical_memory(0xFFF00000, sram_size,
 211                                  sram_offset | IO_MEM_RAM);
 212     /* allocate and load BIOS */
 213 #ifdef DEBUG_BOARD_INIT
 214     printf("%s: register BIOS\n", __func__);
 215 #endif
 216     fl_idx = 0;
 217 #ifdef USE_FLASH_BIOS
 218     dinfo = drive_get(IF_PFLASH, 0, fl_idx);
 219     if (dinfo) {
 220         bios_size = bdrv_getlength(dinfo->bdrv);
 221         bios_offset = qemu_ram_alloc(bios_size);
 222         fl_sectors = (bios_size + 65535) >> 16;
 223 #ifdef DEBUG_BOARD_INIT
 224         printf("Register parallel flash %d size " TARGET_FMT_lx
 225                " at offset %08lx addr " TARGET_FMT_lx " '%s' %d\n",
 226                fl_idx, bios_size, bios_offset, -bios_size,
 227                bdrv_get_device_name(dinfo->bdrv), fl_sectors);
 228 #endif
 229         pflash_cfi02_register((uint32_t)(-bios_size), bios_offset,
 230                               dinfo->bdrv, 65536, fl_sectors, 1,
 231                               2, 0x0001, 0x22DA, 0x0000, 0x0000, 0x555, 0x2AA);
 232         fl_idx++;
 233     } else
 234 #endif
 235     {
 236 #ifdef DEBUG_BOARD_INIT
 237         printf("Load BIOS from file\n");
 238 #endif
 239         bios_offset = qemu_ram_alloc(BIOS_SIZE);
 240         if (bios_name == NULL)
 241             bios_name = BIOS_FILENAME;
 242         filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
 243         if (filename) {
 244             bios_size = load_image(filename, qemu_get_ram_ptr(bios_offset));
 245             qemu_free(filename);
 246         } else {
 247             bios_size = -1;
 248         }
 249         if (bios_size < 0 || bios_size > BIOS_SIZE) {
 250             fprintf(stderr, "qemu: could not load PowerPC bios '%s'\n",
 251                     bios_name);
 252             exit(1);
 253         }
 254         bios_size = (bios_size + 0xfff) & ~0xfff;
 255         cpu_register_physical_memory((uint32_t)(-bios_size),
 256                                      bios_size, bios_offset | IO_MEM_ROM);
 257     }
 258     /* Register FPGA */
 259 #ifdef DEBUG_BOARD_INIT
 260     printf("%s: register FPGA\n", __func__);
 261 #endif
 262     ref405ep_fpga_init(0xF0300000);
 263     /* Register NVRAM */
 264 #ifdef DEBUG_BOARD_INIT
 265     printf("%s: register NVRAM\n", __func__);
 266 #endif
 267     m48t59_init(NULL, 0xF0000000, 0, 8192, 8);
 268     /* Load kernel */
 269     linux_boot = (kernel_filename != NULL);
 270     if (linux_boot) {
 271 #ifdef DEBUG_BOARD_INIT
 272         printf("%s: load kernel\n", __func__);
 273 #endif
 274         memset(&bd, 0, sizeof(bd));
 275         bd.bi_memstart = 0x00000000;
 276         bd.bi_memsize = ram_size;
 277         bd.bi_flashstart = -bios_size;
 278         bd.bi_flashsize = -bios_size;
 279         bd.bi_flashoffset = 0;
 280         bd.bi_sramstart = 0xFFF00000;
 281         bd.bi_sramsize = sram_size;
 282         bd.bi_bootflags = 0;
 283         bd.bi_intfreq = 133333333;
 284         bd.bi_busfreq = 33333333;
 285         bd.bi_baudrate = 115200;
 286         bd.bi_s_version[0] = 'Q';
 287         bd.bi_s_version[1] = 'M';
 288         bd.bi_s_version[2] = 'U';
 289         bd.bi_s_version[3] = '\0';
 290         bd.bi_r_version[0] = 'Q';
 291         bd.bi_r_version[1] = 'E';
 292         bd.bi_r_version[2] = 'M';
 293         bd.bi_r_version[3] = 'U';
 294         bd.bi_r_version[4] = '\0';
 295         bd.bi_procfreq = 133333333;
 296         bd.bi_plb_busfreq = 33333333;
 297         bd.bi_pci_busfreq = 33333333;
 298         bd.bi_opbfreq = 33333333;
 299         bdloc = ppc405_set_bootinfo(env, &bd, 0x00000001);
 300         env->gpr[3] = bdloc;
 301         kernel_base = KERNEL_LOAD_ADDR;
 302         /* now we can load the kernel */
 303         kernel_size = load_image_targphys(kernel_filename, kernel_base,
 304                                           ram_size - kernel_base);
 305         if (kernel_size < 0) {
 306             fprintf(stderr, "qemu: could not load kernel '%s'\n",
 307                     kernel_filename);
 308             exit(1);
 309         }
 310         printf("Load kernel size " TARGET_FMT_ld " at " TARGET_FMT_lx,
 311                kernel_size, kernel_base);
 312         /* load initrd */
 313         if (initrd_filename) {
 314             initrd_base = INITRD_LOAD_ADDR;
 315             initrd_size = load_image_targphys(initrd_filename, initrd_base,
 316                                               ram_size - initrd_base);
 317             if (initrd_size < 0) {
 318                 fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
 319                         initrd_filename);
 320                 exit(1);
 321             }
 322         } else {
 323             initrd_base = 0;
 324             initrd_size = 0;
 325         }
 326         env->gpr[4] = initrd_base;
 327         env->gpr[5] = initrd_size;
 328         ppc_boot_device = 'm';
 329         if (kernel_cmdline != NULL) {
 330             len = strlen(kernel_cmdline);
 331             bdloc -= ((len + 255) & ~255);
 332             cpu_physical_memory_write(bdloc, (void *)kernel_cmdline, len + 1);
 333             env->gpr[6] = bdloc;
 334             env->gpr[7] = bdloc + len;
 335         } else {
 336             env->gpr[6] = 0;
 337             env->gpr[7] = 0;
 338         }
 339         env->nip = KERNEL_LOAD_ADDR;
 340     } else {
 341         kernel_base = 0;
 342         kernel_size = 0;
 343         initrd_base = 0;
 344         initrd_size = 0;
 345         bdloc = 0;
 346     }
 347 #ifdef DEBUG_BOARD_INIT
 348     printf("%s: Done\n", __func__);
 349 #endif
 350     printf("bdloc %016lx\n", (unsigned long)bdloc);
 351 }
 352
 353 static QEMUMachine ref405ep_machine = {
 354     .name = "ref405ep",
 355     .desc = "ref405ep",
 356     .init = ref405ep_init,
 357 };
 358
 359 /*****************************************************************************/
 360 /* AMCC Taihu evaluation board */
 361 /* - PowerPC 405EP processor
 362  * - SDRAM               128 MB at 0x00000000
 363  * - Boot flash          2 MB   at 0xFFE00000
 364  * - Application flash   32 MB  at 0xFC000000
 365  * - 2 serial ports
 366  * - 2 ethernet PHY
 367  * - 1 USB 1.1 device    0x50000000
 368  * - 1 LCD display       0x50100000
 369  * - 1 CPLD              0x50100000
 370  * - 1 I2C EEPROM
 371  * - 1 I2C thermal sensor
 372  * - a set of LEDs
 373  * - bit-bang SPI port using GPIOs
 374  * - 1 EBC interface connector 0 0x50200000
 375  * - 1 cardbus controller + expansion slot.
 376  * - 1 PCI expansion slot.
 377  */
 378 typedef struct taihu_cpld_t taihu_cpld_t;
 379 struct taihu_cpld_t {
 380     uint8_t reg0;
 381     uint8_t reg1;
 382 };
 383
 384 static uint32_t taihu_cpld_readb (void *opaque, target_phys_addr_t addr)
 385 {
 386     taihu_cpld_t *cpld;
 387     uint32_t ret;
 388
 389     cpld = opaque;
 390     switch (addr) {
 391     case 0x0:
 392         ret = cpld->reg0;
 393         break;
 394     case 0x1:
 395         ret = cpld->reg1;
 396         break;
 397     default:
 398         ret = 0;
 399         break;
 400     }
 401
 402     return ret;
 403 }
 404
 405 static void taihu_cpld_writeb (void *opaque,
 406                                target_phys_addr_t addr, uint32_t value)
 407 {
 408     taihu_cpld_t *cpld;
 409
 410     cpld = opaque;
 411     switch (addr) {
 412     case 0x0:
 413         /* Read only */
 414         break;
 415     case 0x1:
 416         cpld->reg1 = value;
 417         break;
 418     default:
 419         break;
 420     }
 421 }
 422
 423 static uint32_t taihu_cpld_readw (void *opaque, target_phys_addr_t addr)
 424 {
 425     uint32_t ret;
 426
 427     ret = taihu_cpld_readb(opaque, addr) << 8;
 428     ret |= taihu_cpld_readb(opaque, addr + 1);
 429
 430     return ret;
 431 }
 432
 433 static void taihu_cpld_writew (void *opaque,
 434                                target_phys_addr_t addr, uint32_t value)
 435 {
 436     taihu_cpld_writeb(opaque, addr, (value >> 8) & 0xFF);
 437     taihu_cpld_writeb(opaque, addr + 1, value & 0xFF);
 438 }
 439
 440 static uint32_t taihu_cpld_readl (void *opaque, target_phys_addr_t addr)
 441 {
 442     uint32_t ret;
 443
 444     ret = taihu_cpld_readb(opaque, addr) << 24;
 445     ret |= taihu_cpld_readb(opaque, addr + 1) << 16;
 446     ret |= taihu_cpld_readb(opaque, addr + 2) << 8;
 447     ret |= taihu_cpld_readb(opaque, addr + 3);
 448
 449     return ret;
 450 }
 451
 452 static void taihu_cpld_writel (void *opaque,
 453                                target_phys_addr_t addr, uint32_t value)
 454 {
 455     taihu_cpld_writel(opaque, addr, (value >> 24) & 0xFF);
 456     taihu_cpld_writel(opaque, addr + 1, (value >> 16) & 0xFF);
 457     taihu_cpld_writel(opaque, addr + 2, (value >> 8) & 0xFF);
 458     taihu_cpld_writeb(opaque, addr + 3, value & 0xFF);
 459 }
 460
 461 static CPUReadMemoryFunc * const taihu_cpld_read[] = {
 462     &taihu_cpld_readb,
 463     &taihu_cpld_readw,
 464     &taihu_cpld_readl,
 465 };
 466
 467 static CPUWriteMemoryFunc * const taihu_cpld_write[] = {
 468     &taihu_cpld_writeb,
 469     &taihu_cpld_writew,
 470     &taihu_cpld_writel,
 471 };
 472
 473 static void taihu_cpld_reset (void *opaque)
 474 {
 475     taihu_cpld_t *cpld;
 476
 477     cpld = opaque;
 478     cpld->reg0 = 0x01;
 479     cpld->reg1 = 0x80;
 480 }
 481
 482 static void taihu_cpld_init (uint32_t base)
 483 {
 484     taihu_cpld_t *cpld;
 485     int cpld_memory;
 486
 487     cpld = qemu_mallocz(sizeof(taihu_cpld_t));
 488     cpld_memory = cpu_register_io_memory(taihu_cpld_read,
 489                                          taihu_cpld_write, cpld);
 490     cpu_register_physical_memory(base, 0x00000100, cpld_memory);
 491     qemu_register_reset(&taihu_cpld_reset, cpld);
 492 }
 493
 494 static void taihu_405ep_init(ram_addr_t ram_size,
 495                              const char *boot_device,
 496                              const char *kernel_filename,
 497                              const char *kernel_cmdline,
 498                              const char *initrd_filename,
 499                              const char *cpu_model)
 500 {
 501     char *filename;
 502     CPUPPCState *env;
 503     qemu_irq *pic;
 504     ram_addr_t bios_offset;
 505     target_phys_addr_t ram_bases[2], ram_sizes[2];
 506     target_ulong bios_size;
 507     target_ulong kernel_base, kernel_size, initrd_base, initrd_size;
 508     int linux_boot;
 509     int fl_idx, fl_sectors;
 510     int ppc_boot_device = boot_device[0];
 511     DriveInfo *dinfo;
 512
 513     /* RAM is soldered to the board so the size cannot be changed */
 514     ram_bases[0] = qemu_ram_alloc(0x04000000);
 515     ram_sizes[0] = 0x04000000;
 516     ram_bases[1] = qemu_ram_alloc(0x04000000);
 517     ram_sizes[1] = 0x04000000;
 518     ram_size = 0x08000000;
 519 #ifdef DEBUG_BOARD_INIT
 520     printf("%s: register cpu\n", __func__);
 521 #endif
 522     env = ppc405ep_init(ram_bases, ram_sizes, 33333333, &pic,
 523                         kernel_filename == NULL ? 0 : 1);
 524     /* allocate and load BIOS */
 525 #ifdef DEBUG_BOARD_INIT
 526     printf("%s: register BIOS\n", __func__);
 527 #endif
 528     fl_idx = 0;
 529 #if defined(USE_FLASH_BIOS)
 530     dinfo = drive_get(IF_PFLASH, 0, fl_idx);
 531     if (dinfo) {
 532         bios_size = bdrv_getlength(dinfo->bdrv);
 533         /* XXX: should check that size is 2MB */
 534         //        bios_size = 2 * 1024 * 1024;
 535         fl_sectors = (bios_size + 65535) >> 16;
 536         bios_offset = qemu_ram_alloc(bios_size);
 537 #ifdef DEBUG_BOARD_INIT
 538         printf("Register parallel flash %d size " TARGET_FMT_lx
 539                " at offset %08lx addr " TARGET_FMT_lx " '%s' %d\n",
 540                fl_idx, bios_size, bios_offset, -bios_size,
 541                bdrv_get_device_name(dinfo->bdrv), fl_sectors);
 542 #endif
 543         pflash_cfi02_register((uint32_t)(-bios_size), bios_offset,
 544                               dinfo->bdrv, 65536, fl_sectors, 1,
 545                               4, 0x0001, 0x22DA, 0x0000, 0x0000, 0x555, 0x2AA);
 546         fl_idx++;
 547     } else
 548 #endif
 549     {
 550 #ifdef DEBUG_BOARD_INIT
 551         printf("Load BIOS from file\n");
 552 #endif
 553         if (bios_name == NULL)
 554             bios_name = BIOS_FILENAME;
 555         bios_offset = qemu_ram_alloc(BIOS_SIZE);
 556         filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
 557         if (filename) {
 558             bios_size = load_image(filename, qemu_get_ram_ptr(bios_offset));
 559         } else {
 560             bios_size = -1;
 561         }
 562         if (bios_size < 0 || bios_size > BIOS_SIZE) {
 563             fprintf(stderr, "qemu: could not load PowerPC bios '%s'\n",
 564                     bios_name);
 565             exit(1);
 566         }
 567         bios_size = (bios_size + 0xfff) & ~0xfff;
 568         cpu_register_physical_memory((uint32_t)(-bios_size),
 569                                      bios_size, bios_offset | IO_MEM_ROM);
 570     }
 571     /* Register Linux flash */
 572     dinfo = drive_get(IF_PFLASH, 0, fl_idx);
 573     if (dinfo) {
 574         bios_size = bdrv_getlength(dinfo->bdrv);
 575         /* XXX: should check that size is 32MB */
 576         bios_size = 32 * 1024 * 1024;
 577         fl_sectors = (bios_size + 65535) >> 16;
 578 #ifdef DEBUG_BOARD_INIT
 579         printf("Register parallel flash %d size " TARGET_FMT_lx
 580                " at offset %08lx  addr " TARGET_FMT_lx " '%s'\n",
 581                fl_idx, bios_size, bios_offset, (target_ulong)0xfc000000,
 582                bdrv_get_device_name(dinfo->bdrv));
 583 #endif
 584         bios_offset = qemu_ram_alloc(bios_size);
 585         pflash_cfi02_register(0xfc000000, bios_offset,
 586                               dinfo->bdrv, 65536, fl_sectors, 1,
 587                               4, 0x0001, 0x22DA, 0x0000, 0x0000, 0x555, 0x2AA);
 588         fl_idx++;
 589     }
 590     /* Register CLPD & LCD display */
 591 #ifdef DEBUG_BOARD_INIT
 592     printf("%s: register CPLD\n", __func__);
 593 #endif
 594     taihu_cpld_init(0x50100000);
 595     /* Load kernel */
 596     linux_boot = (kernel_filename != NULL);
 597     if (linux_boot) {
 598 #ifdef DEBUG_BOARD_INIT
 599         printf("%s: load kernel\n", __func__);
 600 #endif
 601         kernel_base = KERNEL_LOAD_ADDR;
 602         /* now we can load the kernel */
 603         kernel_size = load_image_targphys(kernel_filename, kernel_base,
 604                                           ram_size - kernel_base);
 605         if (kernel_size < 0) {
 606             fprintf(stderr, "qemu: could not load kernel '%s'\n",
 607                     kernel_filename);
 608             exit(1);
 609         }
 610         /* load initrd */
 611         if (initrd_filename) {
 612             initrd_base = INITRD_LOAD_ADDR;
 613             initrd_size = load_image_targphys(initrd_filename, initrd_base,
 614                                               ram_size - initrd_base);
 615             if (initrd_size < 0) {
 616                 fprintf(stderr,
 617                         "qemu: could not load initial ram disk '%s'\n",
 618                         initrd_filename);
 619                 exit(1);
 620             }
 621         } else {
 622             initrd_base = 0;
 623             initrd_size = 0;
 624         }
 625         ppc_boot_device = 'm';
 626     } else {
 627         kernel_base = 0;
 628         kernel_size = 0;
 629         initrd_base = 0;
 630         initrd_size = 0;
 631     }
 632 #ifdef DEBUG_BOARD_INIT
 633     printf("%s: Done\n", __func__);
 634 #endif
 635 }
 636
 637 static QEMUMachine taihu_machine = {
 638     .name = "taihu",
 639     .desc = "taihu",
 640     .init = taihu_405ep_init,
 641 };
 642
 643 static void ppc405_machine_init(void)
 644 {
 645     qemu_register_machine(&ref405ep_machine);
 646     qemu_register_machine(&taihu_machine);
 647 }
 648
 649 machine_init(ppc405_machine_init);