hw/ppc/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/hw.h"
  25 #include "hw/ppc/ppc.h"
  26 #include "ppc405.h"
  27 #include "hw/timer/m48t59.h"
  28 #include "hw/block/flash.h"
  29 #include "sysemu/sysemu.h"
  30 #include "sysemu/qtest.h"
  31 #include "sysemu/block-backend.h"
  32 #include "hw/boards.h"
  33 #include "qemu/log.h"
  34 #include "qemu/error-report.h"
  35 #include "hw/loader.h"
  36 #include "sysemu/block-backend.h"
  37 #include "sysemu/blockdev.h"
  38 #include "exec/address-spaces.h"
  39
  40 #define BIOS_FILENAME "ppc405_rom.bin"
  41 #define BIOS_SIZE (2048 * 1024)
  42
  43 #define KERNEL_LOAD_ADDR 0x00000000
  44 #define INITRD_LOAD_ADDR 0x01800000
  45
  46 #define USE_FLASH_BIOS
  47
  48 //#define DEBUG_BOARD_INIT
  49
  50 /*****************************************************************************/
  51 /* PPC405EP reference board (IBM) */
  52 /* Standalone board with:
  53  * - PowerPC 405EP CPU
  54  * - SDRAM (0x00000000)
  55  * - Flash (0xFFF80000)
  56  * - SRAM  (0xFFF00000)
  57  * - NVRAM (0xF0000000)
  58  * - FPGA  (0xF0300000)
  59  */
  60 typedef struct ref405ep_fpga_t ref405ep_fpga_t;
  61 struct ref405ep_fpga_t {
  62     uint8_t reg0;
  63     uint8_t reg1;
  64 };
  65
  66 static uint32_t ref405ep_fpga_readb (void *opaque, hwaddr addr)
  67 {
  68     ref405ep_fpga_t *fpga;
  69     uint32_t ret;
  70
  71     fpga = opaque;
  72     switch (addr) {
  73     case 0x0:
  74         ret = fpga->reg0;
  75         break;
  76     case 0x1:
  77         ret = fpga->reg1;
  78         break;
  79     default:
  80         ret = 0;
  81         break;
  82     }
  83
  84     return ret;
  85 }
  86
  87 static void ref405ep_fpga_writeb (void *opaque,
  88                                   hwaddr addr, uint32_t value)
  89 {
  90     ref405ep_fpga_t *fpga;
  91
  92     fpga = opaque;
  93     switch (addr) {
  94     case 0x0:
  95         /* Read only */
  96         break;
  97     case 0x1:
  98         fpga->reg1 = value;
  99         break;
 100     default:
 101         break;
 102     }
 103 }
 104
 105 static uint32_t ref405ep_fpga_readw (void *opaque, hwaddr addr)
 106 {
 107     uint32_t ret;
 108
 109     ret = ref405ep_fpga_readb(opaque, addr) << 8;
 110     ret |= ref405ep_fpga_readb(opaque, addr + 1);
 111
 112     return ret;
 113 }
 114
 115 static void ref405ep_fpga_writew (void *opaque,
 116                                   hwaddr addr, uint32_t value)
 117 {
 118     ref405ep_fpga_writeb(opaque, addr, (value >> 8) & 0xFF);
 119     ref405ep_fpga_writeb(opaque, addr + 1, value & 0xFF);
 120 }
 121
 122 static uint32_t ref405ep_fpga_readl (void *opaque, hwaddr addr)
 123 {
 124     uint32_t ret;
 125
 126     ret = ref405ep_fpga_readb(opaque, addr) << 24;
 127     ret |= ref405ep_fpga_readb(opaque, addr + 1) << 16;
 128     ret |= ref405ep_fpga_readb(opaque, addr + 2) << 8;
 129     ret |= ref405ep_fpga_readb(opaque, addr + 3);
 130
 131     return ret;
 132 }
 133
 134 static void ref405ep_fpga_writel (void *opaque,
 135                                   hwaddr addr, uint32_t value)
 136 {
 137     ref405ep_fpga_writeb(opaque, addr, (value >> 24) & 0xFF);
 138     ref405ep_fpga_writeb(opaque, addr + 1, (value >> 16) & 0xFF);
 139     ref405ep_fpga_writeb(opaque, addr + 2, (value >> 8) & 0xFF);
 140     ref405ep_fpga_writeb(opaque, addr + 3, value & 0xFF);
 141 }
 142
 143 static const MemoryRegionOps ref405ep_fpga_ops = {
 144     .old_mmio = {
 145         .read = {
 146             ref405ep_fpga_readb, ref405ep_fpga_readw, ref405ep_fpga_readl,
 147         },
 148         .write = {
 149             ref405ep_fpga_writeb, ref405ep_fpga_writew, ref405ep_fpga_writel,
 150         },
 151     },
 152     .endianness = DEVICE_NATIVE_ENDIAN,
 153 };
 154
 155 static void ref405ep_fpga_reset (void *opaque)
 156 {
 157     ref405ep_fpga_t *fpga;
 158
 159     fpga = opaque;
 160     fpga->reg0 = 0x00;
 161     fpga->reg1 = 0x0F;
 162 }
 163
 164 static void ref405ep_fpga_init(MemoryRegion *sysmem, uint32_t base)
 165 {
 166     ref405ep_fpga_t *fpga;
 167     MemoryRegion *fpga_memory = g_new(MemoryRegion, 1);
 168
 169     fpga = g_malloc0(sizeof(ref405ep_fpga_t));
 170     memory_region_init_io(fpga_memory, NULL, &ref405ep_fpga_ops, fpga,
 171                           "fpga", 0x00000100);
 172     memory_region_add_subregion(sysmem, base, fpga_memory);
 173     qemu_register_reset(&ref405ep_fpga_reset, fpga);
 174 }
 175
 176 static void ref405ep_init(MachineState *machine)
 177 {
 178     ram_addr_t ram_size = machine->ram_size;
 179     const char *kernel_filename = machine->kernel_filename;
 180     const char *kernel_cmdline = machine->kernel_cmdline;
 181     const char *initrd_filename = machine->initrd_filename;
 182     char *filename;
 183     ppc4xx_bd_info_t bd;
 184     CPUPPCState *env;
 185     qemu_irq *pic;
 186     MemoryRegion *bios;
 187     MemoryRegion *sram = g_new(MemoryRegion, 1);
 188     ram_addr_t bdloc;
 189     MemoryRegion *ram_memories = g_malloc(2 * sizeof(*ram_memories));
 190     hwaddr ram_bases[2], ram_sizes[2];
 191     target_ulong sram_size;
 192     long bios_size;
 193     //int phy_addr = 0;
 194     //static int phy_addr = 1;
 195     target_ulong kernel_base, initrd_base;
 196     long kernel_size, initrd_size;
 197     int linux_boot;
 198     int fl_idx, fl_sectors, len;
 199     DriveInfo *dinfo;
 200     MemoryRegion *sysmem = get_system_memory();
 201
 202     /* XXX: fix this */
 203     memory_region_allocate_system_memory(&ram_memories[0], NULL, "ef405ep.ram",
 204                                          0x08000000);
 205     ram_bases[0] = 0;
 206     ram_sizes[0] = 0x08000000;
 207     memory_region_init(&ram_memories[1], NULL, "ef405ep.ram1", 0);
 208     ram_bases[1] = 0x00000000;
 209     ram_sizes[1] = 0x00000000;
 210     ram_size = 128 * 1024 * 1024;
 211 #ifdef DEBUG_BOARD_INIT
 212     printf("%s: register cpu\n", __func__);
 213 #endif
 214     env = ppc405ep_init(sysmem, ram_memories, ram_bases, ram_sizes,
 215                         33333333, &pic, kernel_filename == NULL ? 0 : 1);
 216     /* allocate SRAM */
 217     sram_size = 512 * 1024;
 218     memory_region_init_ram(sram, NULL, "ef405ep.sram", sram_size,
 219                            &error_fatal);
 220     vmstate_register_ram_global(sram);
 221     memory_region_add_subregion(sysmem, 0xFFF00000, sram);
 222     /* allocate and load BIOS */
 223 #ifdef DEBUG_BOARD_INIT
 224     printf("%s: register BIOS\n", __func__);
 225 #endif
 226     fl_idx = 0;
 227 #ifdef USE_FLASH_BIOS
 228     dinfo = drive_get(IF_PFLASH, 0, fl_idx);
 229     if (dinfo) {
 230         BlockBackend *blk = blk_by_legacy_dinfo(dinfo);
 231
 232         bios_size = blk_getlength(blk);
 233         fl_sectors = (bios_size + 65535) >> 16;
 234 #ifdef DEBUG_BOARD_INIT
 235         printf("Register parallel flash %d size %lx"
 236                " at addr %lx '%s' %d\n",
 237                fl_idx, bios_size, -bios_size,
 238                blk_name(blk), fl_sectors);
 239 #endif
 240         pflash_cfi02_register((uint32_t)(-bios_size),
 241                               NULL, "ef405ep.bios", bios_size,
 242                               blk, 65536, fl_sectors, 1,
 243                               2, 0x0001, 0x22DA, 0x0000, 0x0000, 0x555, 0x2AA,
 244                               1);
 245         fl_idx++;
 246     } else
 247 #endif
 248     {
 249 #ifdef DEBUG_BOARD_INIT
 250         printf("Load BIOS from file\n");
 251 #endif
 252         bios = g_new(MemoryRegion, 1);
 253         memory_region_init_ram(bios, NULL, "ef405ep.bios", BIOS_SIZE,
 254                                &error_fatal);
 255         vmstate_register_ram_global(bios);
 256
 257         if (bios_name == NULL)
 258             bios_name = BIOS_FILENAME;
 259         filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
 260         if (filename) {
 261             bios_size = load_image(filename, memory_region_get_ram_ptr(bios));
 262             g_free(filename);
 263             if (bios_size < 0 || bios_size > BIOS_SIZE) {
 264                 error_report("Could not load PowerPC BIOS '%s'", bios_name);
 265                 exit(1);
 266             }
 267             bios_size = (bios_size + 0xfff) & ~0xfff;
 268             memory_region_add_subregion(sysmem, (uint32_t)(-bios_size), bios);
 269         } else if (!qtest_enabled() || kernel_filename != NULL) {
 270             error_report("Could not load PowerPC BIOS '%s'", bios_name);
 271             exit(1);
 272         } else {
 273             /* Avoid an uninitialized variable warning */
 274             bios_size = -1;
 275         }
 276         memory_region_set_readonly(bios, true);
 277     }
 278     /* Register FPGA */
 279 #ifdef DEBUG_BOARD_INIT
 280     printf("%s: register FPGA\n", __func__);
 281 #endif
 282     ref405ep_fpga_init(sysmem, 0xF0300000);
 283     /* Register NVRAM */
 284 #ifdef DEBUG_BOARD_INIT
 285     printf("%s: register NVRAM\n", __func__);
 286 #endif
 287     m48t59_init(NULL, 0xF0000000, 0, 8192, 1968, 8);
 288     /* Load kernel */
 289     linux_boot = (kernel_filename != NULL);
 290     if (linux_boot) {
 291 #ifdef DEBUG_BOARD_INIT
 292         printf("%s: load kernel\n", __func__);
 293 #endif
 294         memset(&bd, 0, sizeof(bd));
 295         bd.bi_memstart = 0x00000000;
 296         bd.bi_memsize = ram_size;
 297         bd.bi_flashstart = -bios_size;
 298         bd.bi_flashsize = -bios_size;
 299         bd.bi_flashoffset = 0;
 300         bd.bi_sramstart = 0xFFF00000;
 301         bd.bi_sramsize = sram_size;
 302         bd.bi_bootflags = 0;
 303         bd.bi_intfreq = 133333333;
 304         bd.bi_busfreq = 33333333;
 305         bd.bi_baudrate = 115200;
 306         bd.bi_s_version[0] = 'Q';
 307         bd.bi_s_version[1] = 'M';
 308         bd.bi_s_version[2] = 'U';
 309         bd.bi_s_version[3] = '\0';
 310         bd.bi_r_version[0] = 'Q';
 311         bd.bi_r_version[1] = 'E';
 312         bd.bi_r_version[2] = 'M';
 313         bd.bi_r_version[3] = 'U';
 314         bd.bi_r_version[4] = '\0';
 315         bd.bi_procfreq = 133333333;
 316         bd.bi_plb_busfreq = 33333333;
 317         bd.bi_pci_busfreq = 33333333;
 318         bd.bi_opbfreq = 33333333;
 319         bdloc = ppc405_set_bootinfo(env, &bd, 0x00000001);
 320         env->gpr[3] = bdloc;
 321         kernel_base = KERNEL_LOAD_ADDR;
 322         /* now we can load the kernel */
 323         kernel_size = load_image_targphys(kernel_filename, kernel_base,
 324                                           ram_size - kernel_base);
 325         if (kernel_size < 0) {
 326             fprintf(stderr, "qemu: could not load kernel '%s'\n",
 327                     kernel_filename);
 328             exit(1);
 329         }
 330         printf("Load kernel size %ld at " TARGET_FMT_lx,
 331                kernel_size, kernel_base);
 332         /* load initrd */
 333         if (initrd_filename) {
 334             initrd_base = INITRD_LOAD_ADDR;
 335             initrd_size = load_image_targphys(initrd_filename, initrd_base,
 336                                               ram_size - initrd_base);
 337             if (initrd_size < 0) {
 338                 fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
 339                         initrd_filename);
 340                 exit(1);
 341             }
 342         } else {
 343             initrd_base = 0;
 344             initrd_size = 0;
 345         }
 346         env->gpr[4] = initrd_base;
 347         env->gpr[5] = initrd_size;
 348         if (kernel_cmdline != NULL) {
 349             len = strlen(kernel_cmdline);
 350             bdloc -= ((len + 255) & ~255);
 351             cpu_physical_memory_write(bdloc, kernel_cmdline, len + 1);
 352             env->gpr[6] = bdloc;
 353             env->gpr[7] = bdloc + len;
 354         } else {
 355             env->gpr[6] = 0;
 356             env->gpr[7] = 0;
 357         }
 358         env->nip = KERNEL_LOAD_ADDR;
 359     } else {
 360         kernel_base = 0;
 361         kernel_size = 0;
 362         initrd_base = 0;
 363         initrd_size = 0;
 364         bdloc = 0;
 365     }
 366 #ifdef DEBUG_BOARD_INIT
 367     printf("bdloc " RAM_ADDR_FMT "\n", bdloc);
 368     printf("%s: Done\n", __func__);
 369 #endif
 370 }
 371
 372 static QEMUMachine ref405ep_machine = {
 373     .name = "ref405ep",
 374     .desc = "ref405ep",
 375     .init = ref405ep_init,
 376 };
 377
 378 /*****************************************************************************/
 379 /* AMCC Taihu evaluation board */
 380 /* - PowerPC 405EP processor
 381  * - SDRAM               128 MB at 0x00000000
 382  * - Boot flash          2 MB   at 0xFFE00000
 383  * - Application flash   32 MB  at 0xFC000000
 384  * - 2 serial ports
 385  * - 2 ethernet PHY
 386  * - 1 USB 1.1 device    0x50000000
 387  * - 1 LCD display       0x50100000
 388  * - 1 CPLD              0x50100000
 389  * - 1 I2C EEPROM
 390  * - 1 I2C thermal sensor
 391  * - a set of LEDs
 392  * - bit-bang SPI port using GPIOs
 393  * - 1 EBC interface connector 0 0x50200000
 394  * - 1 cardbus controller + expansion slot.
 395  * - 1 PCI expansion slot.
 396  */
 397 typedef struct taihu_cpld_t taihu_cpld_t;
 398 struct taihu_cpld_t {
 399     uint8_t reg0;
 400     uint8_t reg1;
 401 };
 402
 403 static uint32_t taihu_cpld_readb (void *opaque, hwaddr addr)
 404 {
 405     taihu_cpld_t *cpld;
 406     uint32_t ret;
 407
 408     cpld = opaque;
 409     switch (addr) {
 410     case 0x0:
 411         ret = cpld->reg0;
 412         break;
 413     case 0x1:
 414         ret = cpld->reg1;
 415         break;
 416     default:
 417         ret = 0;
 418         break;
 419     }
 420
 421     return ret;
 422 }
 423
 424 static void taihu_cpld_writeb (void *opaque,
 425                                hwaddr addr, uint32_t value)
 426 {
 427     taihu_cpld_t *cpld;
 428
 429     cpld = opaque;
 430     switch (addr) {
 431     case 0x0:
 432         /* Read only */
 433         break;
 434     case 0x1:
 435         cpld->reg1 = value;
 436         break;
 437     default:
 438         break;
 439     }
 440 }
 441
 442 static uint32_t taihu_cpld_readw (void *opaque, hwaddr addr)
 443 {
 444     uint32_t ret;
 445
 446     ret = taihu_cpld_readb(opaque, addr) << 8;
 447     ret |= taihu_cpld_readb(opaque, addr + 1);
 448
 449     return ret;
 450 }
 451
 452 static void taihu_cpld_writew (void *opaque,
 453                                hwaddr addr, uint32_t value)
 454 {
 455     taihu_cpld_writeb(opaque, addr, (value >> 8) & 0xFF);
 456     taihu_cpld_writeb(opaque, addr + 1, value & 0xFF);
 457 }
 458
 459 static uint32_t taihu_cpld_readl (void *opaque, hwaddr addr)
 460 {
 461     uint32_t ret;
 462
 463     ret = taihu_cpld_readb(opaque, addr) << 24;
 464     ret |= taihu_cpld_readb(opaque, addr + 1) << 16;
 465     ret |= taihu_cpld_readb(opaque, addr + 2) << 8;
 466     ret |= taihu_cpld_readb(opaque, addr + 3);
 467
 468     return ret;
 469 }
 470
 471 static void taihu_cpld_writel (void *opaque,
 472                                hwaddr addr, uint32_t value)
 473 {
 474     taihu_cpld_writel(opaque, addr, (value >> 24) & 0xFF);
 475     taihu_cpld_writel(opaque, addr + 1, (value >> 16) & 0xFF);
 476     taihu_cpld_writel(opaque, addr + 2, (value >> 8) & 0xFF);
 477     taihu_cpld_writeb(opaque, addr + 3, value & 0xFF);
 478 }
 479
 480 static const MemoryRegionOps taihu_cpld_ops = {
 481     .old_mmio = {
 482         .read = { taihu_cpld_readb, taihu_cpld_readw, taihu_cpld_readl, },
 483         .write = { taihu_cpld_writeb, taihu_cpld_writew, taihu_cpld_writel, },
 484     },
 485     .endianness = DEVICE_NATIVE_ENDIAN,
 486 };
 487
 488 static void taihu_cpld_reset (void *opaque)
 489 {
 490     taihu_cpld_t *cpld;
 491
 492     cpld = opaque;
 493     cpld->reg0 = 0x01;
 494     cpld->reg1 = 0x80;
 495 }
 496
 497 static void taihu_cpld_init(MemoryRegion *sysmem, uint32_t base)
 498 {
 499     taihu_cpld_t *cpld;
 500     MemoryRegion *cpld_memory = g_new(MemoryRegion, 1);
 501
 502     cpld = g_malloc0(sizeof(taihu_cpld_t));
 503     memory_region_init_io(cpld_memory, NULL, &taihu_cpld_ops, cpld, "cpld", 0x100);
 504     memory_region_add_subregion(sysmem, base, cpld_memory);
 505     qemu_register_reset(&taihu_cpld_reset, cpld);
 506 }
 507
 508 static void taihu_405ep_init(MachineState *machine)
 509 {
 510     ram_addr_t ram_size = machine->ram_size;
 511     const char *kernel_filename = machine->kernel_filename;
 512     const char *initrd_filename = machine->initrd_filename;
 513     char *filename;
 514     qemu_irq *pic;
 515     MemoryRegion *sysmem = get_system_memory();
 516     MemoryRegion *bios;
 517     MemoryRegion *ram_memories = g_malloc(2 * sizeof(*ram_memories));
 518     MemoryRegion *ram = g_malloc0(sizeof(*ram));
 519     hwaddr ram_bases[2], ram_sizes[2];
 520     long bios_size;
 521     target_ulong kernel_base, initrd_base;
 522     long kernel_size, initrd_size;
 523     int linux_boot;
 524     int fl_idx, fl_sectors;
 525     DriveInfo *dinfo;
 526
 527     /* RAM is soldered to the board so the size cannot be changed */
 528     ram_size = 0x08000000;
 529     memory_region_allocate_system_memory(ram, NULL, "taihu_405ep.ram",
 530                                          ram_size);
 531
 532     ram_bases[0] = 0;
 533     ram_sizes[0] = 0x04000000;
 534     memory_region_init_alias(&ram_memories[0], NULL,
 535                              "taihu_405ep.ram-0", ram, ram_bases[0],
 536                              ram_sizes[0]);
 537     ram_bases[1] = 0x04000000;
 538     ram_sizes[1] = 0x04000000;
 539     memory_region_init_alias(&ram_memories[1], NULL,
 540                              "taihu_405ep.ram-1", ram, ram_bases[1],
 541                              ram_sizes[1]);
 542 #ifdef DEBUG_BOARD_INIT
 543     printf("%s: register cpu\n", __func__);
 544 #endif
 545     ppc405ep_init(sysmem, ram_memories, ram_bases, ram_sizes,
 546                   33333333, &pic, kernel_filename == NULL ? 0 : 1);
 547     /* allocate and load BIOS */
 548 #ifdef DEBUG_BOARD_INIT
 549     printf("%s: register BIOS\n", __func__);
 550 #endif
 551     fl_idx = 0;
 552 #if defined(USE_FLASH_BIOS)
 553     dinfo = drive_get(IF_PFLASH, 0, fl_idx);
 554     if (dinfo) {
 555         BlockBackend *blk = blk_by_legacy_dinfo(dinfo);
 556
 557         bios_size = blk_getlength(blk);
 558         /* XXX: should check that size is 2MB */
 559         //        bios_size = 2 * 1024 * 1024;
 560         fl_sectors = (bios_size + 65535) >> 16;
 561 #ifdef DEBUG_BOARD_INIT
 562         printf("Register parallel flash %d size %lx"
 563                " at addr %lx '%s' %d\n",
 564                fl_idx, bios_size, -bios_size,
 565                blk_name(blk), fl_sectors);
 566 #endif
 567         pflash_cfi02_register((uint32_t)(-bios_size),
 568                               NULL, "taihu_405ep.bios", bios_size,
 569                               blk, 65536, fl_sectors, 1,
 570                               4, 0x0001, 0x22DA, 0x0000, 0x0000, 0x555, 0x2AA,
 571                               1);
 572         fl_idx++;
 573     } else
 574 #endif
 575     {
 576 #ifdef DEBUG_BOARD_INIT
 577         printf("Load BIOS from file\n");
 578 #endif
 579         if (bios_name == NULL)
 580             bios_name = BIOS_FILENAME;
 581         bios = g_new(MemoryRegion, 1);
 582         memory_region_init_ram(bios, NULL, "taihu_405ep.bios", BIOS_SIZE,
 583                                &error_fatal);
 584         vmstate_register_ram_global(bios);
 585         filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
 586         if (filename) {
 587             bios_size = load_image(filename, memory_region_get_ram_ptr(bios));
 588             g_free(filename);
 589             if (bios_size < 0 || bios_size > BIOS_SIZE) {
 590                 error_report("Could not load PowerPC BIOS '%s'", bios_name);
 591                 exit(1);
 592             }
 593             bios_size = (bios_size + 0xfff) & ~0xfff;
 594             memory_region_add_subregion(sysmem, (uint32_t)(-bios_size), bios);
 595         } else if (!qtest_enabled()) {
 596             error_report("Could not load PowerPC BIOS '%s'", bios_name);
 597             exit(1);
 598         }
 599         memory_region_set_readonly(bios, true);
 600     }
 601     /* Register Linux flash */
 602     dinfo = drive_get(IF_PFLASH, 0, fl_idx);
 603     if (dinfo) {
 604         BlockBackend *blk = blk_by_legacy_dinfo(dinfo);
 605
 606         bios_size = blk_getlength(blk);
 607         /* XXX: should check that size is 32MB */
 608         bios_size = 32 * 1024 * 1024;
 609         fl_sectors = (bios_size + 65535) >> 16;
 610 #ifdef DEBUG_BOARD_INIT
 611         printf("Register parallel flash %d size %lx"
 612                " at addr " TARGET_FMT_lx " '%s'\n",
 613                fl_idx, bios_size, (target_ulong)0xfc000000,
 614                blk_name(blk));
 615 #endif
 616         pflash_cfi02_register(0xfc000000, NULL, "taihu_405ep.flash", bios_size,
 617                               blk, 65536, fl_sectors, 1,
 618                               4, 0x0001, 0x22DA, 0x0000, 0x0000, 0x555, 0x2AA,
 619                               1);
 620         fl_idx++;
 621     }
 622     /* Register CLPD & LCD display */
 623 #ifdef DEBUG_BOARD_INIT
 624     printf("%s: register CPLD\n", __func__);
 625 #endif
 626     taihu_cpld_init(sysmem, 0x50100000);
 627     /* Load kernel */
 628     linux_boot = (kernel_filename != NULL);
 629     if (linux_boot) {
 630 #ifdef DEBUG_BOARD_INIT
 631         printf("%s: load kernel\n", __func__);
 632 #endif
 633         kernel_base = KERNEL_LOAD_ADDR;
 634         /* now we can load the kernel */
 635         kernel_size = load_image_targphys(kernel_filename, kernel_base,
 636                                           ram_size - kernel_base);
 637         if (kernel_size < 0) {
 638             fprintf(stderr, "qemu: could not load kernel '%s'\n",
 639                     kernel_filename);
 640             exit(1);
 641         }
 642         /* load initrd */
 643         if (initrd_filename) {
 644             initrd_base = INITRD_LOAD_ADDR;
 645             initrd_size = load_image_targphys(initrd_filename, initrd_base,
 646                                               ram_size - initrd_base);
 647             if (initrd_size < 0) {
 648                 fprintf(stderr,
 649                         "qemu: could not load initial ram disk '%s'\n",
 650                         initrd_filename);
 651                 exit(1);
 652             }
 653         } else {
 654             initrd_base = 0;
 655             initrd_size = 0;
 656         }
 657     } else {
 658         kernel_base = 0;
 659         kernel_size = 0;
 660         initrd_base = 0;
 661         initrd_size = 0;
 662     }
 663 #ifdef DEBUG_BOARD_INIT
 664     printf("%s: Done\n", __func__);
 665 #endif
 666 }
 667
 668 static QEMUMachine taihu_machine = {
 669     .name = "taihu",
 670     .desc = "taihu",
 671     .init = taihu_405ep_init,
 672 };
 673
 674 static void ppc405_machine_init(void)
 675 {
 676     qemu_register_machine(&ref405ep_machine);
 677     qemu_register_machine(&taihu_machine);
 678 }
 679
 680 machine_init(ppc405_machine_init);