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 25 #include "qemu/osdep.h" 26 #include "qemu/units.h" 27 #include "qapi/error.h" 28 #include "qemu-common.h" 29 #include "qemu/datadir.h" 30 #include "cpu.h" 31 #include "hw/ppc/ppc.h" 32 #include "hw/qdev-properties.h" 33 #include "hw/sysbus.h" 34 #include "ppc405.h" 35 #include "hw/rtc/m48t59.h" 36 #include "hw/block/flash.h" 37 #include "sysemu/qtest.h" 38 #include "sysemu/reset.h" 39 #include "sysemu/block-backend.h" 40 #include "hw/boards.h" 41 #include "qemu/error-report.h" 42 #include "hw/loader.h" 43 #include "qemu/cutils.h" 44 45 #define BIOS_FILENAME "ppc405_rom.bin" 46 #define BIOS_SIZE (2 * MiB) 47 48 #define KERNEL_LOAD_ADDR 0x00000000 49 #define INITRD_LOAD_ADDR 0x01800000 50 51 #define USE_FLASH_BIOS 52 53 /*****************************************************************************/ 54 /* PPC405EP reference board (IBM) */ 55 /* Standalone board with: 56 * - PowerPC 405EP CPU 57 * - SDRAM (0x00000000) 58 * - Flash (0xFFF80000) 59 * - SRAM (0xFFF00000) 60 * - NVRAM (0xF0000000) 61 * - FPGA (0xF0300000) 62 */ 63 typedef struct ref405ep_fpga_t ref405ep_fpga_t; 64 struct ref405ep_fpga_t { 65 uint8_t reg0; 66 uint8_t reg1; 67 }; 68 69 static uint64_t ref405ep_fpga_readb(void *opaque, hwaddr addr, unsigned size) 70 { 71 ref405ep_fpga_t *fpga; 72 uint32_t ret; 73 74 fpga = opaque; 75 switch (addr) { 76 case 0x0: 77 ret = fpga->reg0; 78 break; 79 case 0x1: 80 ret = fpga->reg1; 81 break; 82 default: 83 ret = 0; 84 break; 85 } 86 87 return ret; 88 } 89 90 static void ref405ep_fpga_writeb(void *opaque, hwaddr addr, uint64_t value, 91 unsigned size) 92 { 93 ref405ep_fpga_t *fpga; 94 95 fpga = opaque; 96 switch (addr) { 97 case 0x0: 98 /* Read only */ 99 break; 100 case 0x1: 101 fpga->reg1 = value; 102 break; 103 default: 104 break; 105 } 106 } 107 108 static const MemoryRegionOps ref405ep_fpga_ops = { 109 .read = ref405ep_fpga_readb, 110 .write = ref405ep_fpga_writeb, 111 .impl.min_access_size = 1, 112 .impl.max_access_size = 1, 113 .valid.min_access_size = 1, 114 .valid.max_access_size = 4, 115 .endianness = DEVICE_BIG_ENDIAN, 116 }; 117 118 static void ref405ep_fpga_reset (void *opaque) 119 { 120 ref405ep_fpga_t *fpga; 121 122 fpga = opaque; 123 fpga->reg0 = 0x00; 124 fpga->reg1 = 0x0F; 125 } 126 127 static void ref405ep_fpga_init(MemoryRegion *sysmem, uint32_t base) 128 { 129 ref405ep_fpga_t *fpga; 130 MemoryRegion *fpga_memory = g_new(MemoryRegion, 1); 131 132 fpga = g_malloc0(sizeof(ref405ep_fpga_t)); 133 memory_region_init_io(fpga_memory, NULL, &ref405ep_fpga_ops, fpga, 134 "fpga", 0x00000100); 135 memory_region_add_subregion(sysmem, base, fpga_memory); 136 qemu_register_reset(&ref405ep_fpga_reset, fpga); 137 } 138 139 static void ref405ep_init(MachineState *machine) 140 { 141 MachineClass *mc = MACHINE_GET_CLASS(machine); 142 const char *bios_name = machine->firmware ?: BIOS_FILENAME; 143 const char *kernel_filename = machine->kernel_filename; 144 const char *kernel_cmdline = machine->kernel_cmdline; 145 const char *initrd_filename = machine->initrd_filename; 146 char *filename; 147 ppc4xx_bd_info_t bd; 148 CPUPPCState *env; 149 DeviceState *dev; 150 SysBusDevice *s; 151 MemoryRegion *bios; 152 MemoryRegion *sram = g_new(MemoryRegion, 1); 153 ram_addr_t bdloc; 154 MemoryRegion *ram_memories = g_new(MemoryRegion, 2); 155 hwaddr ram_bases[2], ram_sizes[2]; 156 target_ulong sram_size; 157 long bios_size; 158 //int phy_addr = 0; 159 //static int phy_addr = 1; 160 target_ulong kernel_base, initrd_base; 161 long kernel_size, initrd_size; 162 int linux_boot; 163 int len; 164 DriveInfo *dinfo; 165 MemoryRegion *sysmem = get_system_memory(); 166 DeviceState *uicdev; 167 168 if (machine->ram_size != mc->default_ram_size) { 169 char *sz = size_to_str(mc->default_ram_size); 170 error_report("Invalid RAM size, should be %s", sz); 171 g_free(sz); 172 exit(EXIT_FAILURE); 173 } 174 175 /* XXX: fix this */ 176 memory_region_init_alias(&ram_memories[0], NULL, "ef405ep.ram.alias", 177 machine->ram, 0, machine->ram_size); 178 ram_bases[0] = 0; 179 ram_sizes[0] = machine->ram_size; 180 memory_region_init(&ram_memories[1], NULL, "ef405ep.ram1", 0); 181 ram_bases[1] = 0x00000000; 182 ram_sizes[1] = 0x00000000; 183 env = ppc405ep_init(sysmem, ram_memories, ram_bases, ram_sizes, 184 33333333, &uicdev, kernel_filename == NULL ? 0 : 1); 185 /* allocate SRAM */ 186 sram_size = 512 * KiB; 187 memory_region_init_ram(sram, NULL, "ef405ep.sram", sram_size, 188 &error_fatal); 189 memory_region_add_subregion(sysmem, 0xFFF00000, sram); 190 /* allocate and load BIOS */ 191 #ifdef USE_FLASH_BIOS 192 dinfo = drive_get(IF_PFLASH, 0, 0); 193 if (dinfo) { 194 bios_size = 8 * MiB; 195 pflash_cfi02_register((uint32_t)(-bios_size), 196 "ef405ep.bios", bios_size, 197 blk_by_legacy_dinfo(dinfo), 198 64 * KiB, 1, 199 2, 0x0001, 0x22DA, 0x0000, 0x0000, 0x555, 0x2AA, 200 1); 201 } else 202 #endif 203 { 204 bios = g_new(MemoryRegion, 1); 205 memory_region_init_rom(bios, NULL, "ef405ep.bios", BIOS_SIZE, 206 &error_fatal); 207 208 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); 209 if (filename) { 210 bios_size = load_image_size(filename, 211 memory_region_get_ram_ptr(bios), 212 BIOS_SIZE); 213 g_free(filename); 214 if (bios_size < 0) { 215 error_report("Could not load PowerPC BIOS '%s'", bios_name); 216 exit(1); 217 } 218 bios_size = (bios_size + 0xfff) & ~0xfff; 219 memory_region_add_subregion(sysmem, (uint32_t)(-bios_size), bios); 220 } else if (!qtest_enabled() || kernel_filename != NULL) { 221 error_report("Could not load PowerPC BIOS '%s'", bios_name); 222 exit(1); 223 } else { 224 /* Avoid an uninitialized variable warning */ 225 bios_size = -1; 226 } 227 } 228 /* Register FPGA */ 229 ref405ep_fpga_init(sysmem, 0xF0300000); 230 /* Register NVRAM */ 231 dev = qdev_new("sysbus-m48t08"); 232 qdev_prop_set_int32(dev, "base-year", 1968); 233 s = SYS_BUS_DEVICE(dev); 234 sysbus_realize_and_unref(s, &error_fatal); 235 sysbus_mmio_map(s, 0, 0xF0000000); 236 /* Load kernel */ 237 linux_boot = (kernel_filename != NULL); 238 if (linux_boot) { 239 memset(&bd, 0, sizeof(bd)); 240 bd.bi_memstart = 0x00000000; 241 bd.bi_memsize = machine->ram_size; 242 bd.bi_flashstart = -bios_size; 243 bd.bi_flashsize = -bios_size; 244 bd.bi_flashoffset = 0; 245 bd.bi_sramstart = 0xFFF00000; 246 bd.bi_sramsize = sram_size; 247 bd.bi_bootflags = 0; 248 bd.bi_intfreq = 133333333; 249 bd.bi_busfreq = 33333333; 250 bd.bi_baudrate = 115200; 251 bd.bi_s_version[0] = 'Q'; 252 bd.bi_s_version[1] = 'M'; 253 bd.bi_s_version[2] = 'U'; 254 bd.bi_s_version[3] = '\0'; 255 bd.bi_r_version[0] = 'Q'; 256 bd.bi_r_version[1] = 'E'; 257 bd.bi_r_version[2] = 'M'; 258 bd.bi_r_version[3] = 'U'; 259 bd.bi_r_version[4] = '\0'; 260 bd.bi_procfreq = 133333333; 261 bd.bi_plb_busfreq = 33333333; 262 bd.bi_pci_busfreq = 33333333; 263 bd.bi_opbfreq = 33333333; 264 bdloc = ppc405_set_bootinfo(env, &bd, 0x00000001); 265 env->gpr[3] = bdloc; 266 kernel_base = KERNEL_LOAD_ADDR; 267 /* now we can load the kernel */ 268 kernel_size = load_image_targphys(kernel_filename, kernel_base, 269 machine->ram_size - kernel_base); 270 if (kernel_size < 0) { 271 error_report("could not load kernel '%s'", kernel_filename); 272 exit(1); 273 } 274 printf("Load kernel size %ld at " TARGET_FMT_lx, 275 kernel_size, kernel_base); 276 /* load initrd */ 277 if (initrd_filename) { 278 initrd_base = INITRD_LOAD_ADDR; 279 initrd_size = load_image_targphys(initrd_filename, initrd_base, 280 machine->ram_size - initrd_base); 281 if (initrd_size < 0) { 282 error_report("could not load initial ram disk '%s'", 283 initrd_filename); 284 exit(1); 285 } 286 } else { 287 initrd_base = 0; 288 initrd_size = 0; 289 } 290 env->gpr[4] = initrd_base; 291 env->gpr[5] = initrd_size; 292 if (kernel_cmdline != NULL) { 293 len = strlen(kernel_cmdline); 294 bdloc -= ((len + 255) & ~255); 295 cpu_physical_memory_write(bdloc, kernel_cmdline, len + 1); 296 env->gpr[6] = bdloc; 297 env->gpr[7] = bdloc + len; 298 } else { 299 env->gpr[6] = 0; 300 env->gpr[7] = 0; 301 } 302 env->nip = KERNEL_LOAD_ADDR; 303 } else { 304 kernel_base = 0; 305 kernel_size = 0; 306 initrd_base = 0; 307 initrd_size = 0; 308 bdloc = 0; 309 } 310 } 311 312 static void ref405ep_class_init(ObjectClass *oc, void *data) 313 { 314 MachineClass *mc = MACHINE_CLASS(oc); 315 316 mc->desc = "ref405ep"; 317 mc->init = ref405ep_init; 318 mc->default_ram_size = 0x08000000; 319 mc->default_ram_id = "ef405ep.ram"; 320 } 321 322 static const TypeInfo ref405ep_type = { 323 .name = MACHINE_TYPE_NAME("ref405ep"), 324 .parent = TYPE_MACHINE, 325 .class_init = ref405ep_class_init, 326 }; 327 328 /*****************************************************************************/ 329 /* AMCC Taihu evaluation board */ 330 /* - PowerPC 405EP processor 331 * - SDRAM 128 MB at 0x00000000 332 * - Boot flash 2 MB at 0xFFE00000 333 * - Application flash 32 MB at 0xFC000000 334 * - 2 serial ports 335 * - 2 ethernet PHY 336 * - 1 USB 1.1 device 0x50000000 337 * - 1 LCD display 0x50100000 338 * - 1 CPLD 0x50100000 339 * - 1 I2C EEPROM 340 * - 1 I2C thermal sensor 341 * - a set of LEDs 342 * - bit-bang SPI port using GPIOs 343 * - 1 EBC interface connector 0 0x50200000 344 * - 1 cardbus controller + expansion slot. 345 * - 1 PCI expansion slot. 346 */ 347 typedef struct taihu_cpld_t taihu_cpld_t; 348 struct taihu_cpld_t { 349 uint8_t reg0; 350 uint8_t reg1; 351 }; 352 353 static uint64_t taihu_cpld_read(void *opaque, hwaddr addr, unsigned size) 354 { 355 taihu_cpld_t *cpld; 356 uint32_t ret; 357 358 cpld = opaque; 359 switch (addr) { 360 case 0x0: 361 ret = cpld->reg0; 362 break; 363 case 0x1: 364 ret = cpld->reg1; 365 break; 366 default: 367 ret = 0; 368 break; 369 } 370 371 return ret; 372 } 373 374 static void taihu_cpld_write(void *opaque, hwaddr addr, 375 uint64_t value, unsigned size) 376 { 377 taihu_cpld_t *cpld; 378 379 cpld = opaque; 380 switch (addr) { 381 case 0x0: 382 /* Read only */ 383 break; 384 case 0x1: 385 cpld->reg1 = value; 386 break; 387 default: 388 break; 389 } 390 } 391 392 static const MemoryRegionOps taihu_cpld_ops = { 393 .read = taihu_cpld_read, 394 .write = taihu_cpld_write, 395 .impl = { 396 .min_access_size = 1, 397 .max_access_size = 1, 398 }, 399 .endianness = DEVICE_NATIVE_ENDIAN, 400 }; 401 402 static void taihu_cpld_reset (void *opaque) 403 { 404 taihu_cpld_t *cpld; 405 406 cpld = opaque; 407 cpld->reg0 = 0x01; 408 cpld->reg1 = 0x80; 409 } 410 411 static void taihu_cpld_init(MemoryRegion *sysmem, uint32_t base) 412 { 413 taihu_cpld_t *cpld; 414 MemoryRegion *cpld_memory = g_new(MemoryRegion, 1); 415 416 cpld = g_malloc0(sizeof(taihu_cpld_t)); 417 memory_region_init_io(cpld_memory, NULL, &taihu_cpld_ops, cpld, "cpld", 0x100); 418 memory_region_add_subregion(sysmem, base, cpld_memory); 419 qemu_register_reset(&taihu_cpld_reset, cpld); 420 } 421 422 static void taihu_405ep_init(MachineState *machine) 423 { 424 MachineClass *mc = MACHINE_GET_CLASS(machine); 425 const char *bios_name = machine->firmware ?: BIOS_FILENAME; 426 const char *kernel_filename = machine->kernel_filename; 427 const char *initrd_filename = machine->initrd_filename; 428 char *filename; 429 MemoryRegion *sysmem = get_system_memory(); 430 MemoryRegion *bios; 431 MemoryRegion *ram_memories = g_new(MemoryRegion, 2); 432 hwaddr ram_bases[2], ram_sizes[2]; 433 long bios_size; 434 target_ulong kernel_base, initrd_base; 435 long kernel_size, initrd_size; 436 int linux_boot; 437 int fl_idx; 438 DriveInfo *dinfo; 439 DeviceState *uicdev; 440 441 if (machine->ram_size != mc->default_ram_size) { 442 char *sz = size_to_str(mc->default_ram_size); 443 error_report("Invalid RAM size, should be %s", sz); 444 g_free(sz); 445 exit(EXIT_FAILURE); 446 } 447 448 ram_bases[0] = 0; 449 ram_sizes[0] = 0x04000000; 450 memory_region_init_alias(&ram_memories[0], NULL, 451 "taihu_405ep.ram-0", machine->ram, ram_bases[0], 452 ram_sizes[0]); 453 ram_bases[1] = 0x04000000; 454 ram_sizes[1] = 0x04000000; 455 memory_region_init_alias(&ram_memories[1], NULL, 456 "taihu_405ep.ram-1", machine->ram, ram_bases[1], 457 ram_sizes[1]); 458 ppc405ep_init(sysmem, ram_memories, ram_bases, ram_sizes, 459 33333333, &uicdev, kernel_filename == NULL ? 0 : 1); 460 /* allocate and load BIOS */ 461 fl_idx = 0; 462 #if defined(USE_FLASH_BIOS) 463 dinfo = drive_get(IF_PFLASH, 0, fl_idx); 464 if (dinfo) { 465 bios_size = 2 * MiB; 466 pflash_cfi02_register(0xFFE00000, 467 "taihu_405ep.bios", bios_size, 468 blk_by_legacy_dinfo(dinfo), 469 64 * KiB, 1, 470 4, 0x0001, 0x22DA, 0x0000, 0x0000, 0x555, 0x2AA, 471 1); 472 fl_idx++; 473 } else 474 #endif 475 { 476 bios = g_new(MemoryRegion, 1); 477 memory_region_init_rom(bios, NULL, "taihu_405ep.bios", BIOS_SIZE, 478 &error_fatal); 479 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); 480 if (filename) { 481 bios_size = load_image_size(filename, 482 memory_region_get_ram_ptr(bios), 483 BIOS_SIZE); 484 g_free(filename); 485 if (bios_size < 0) { 486 error_report("Could not load PowerPC BIOS '%s'", bios_name); 487 exit(1); 488 } 489 bios_size = (bios_size + 0xfff) & ~0xfff; 490 memory_region_add_subregion(sysmem, (uint32_t)(-bios_size), bios); 491 } else if (!qtest_enabled()) { 492 error_report("Could not load PowerPC BIOS '%s'", bios_name); 493 exit(1); 494 } 495 } 496 /* Register Linux flash */ 497 dinfo = drive_get(IF_PFLASH, 0, fl_idx); 498 if (dinfo) { 499 bios_size = 32 * MiB; 500 pflash_cfi02_register(0xfc000000, "taihu_405ep.flash", bios_size, 501 blk_by_legacy_dinfo(dinfo), 502 64 * KiB, 1, 503 4, 0x0001, 0x22DA, 0x0000, 0x0000, 0x555, 0x2AA, 504 1); 505 fl_idx++; 506 } 507 /* Register CLPD & LCD display */ 508 taihu_cpld_init(sysmem, 0x50100000); 509 /* Load kernel */ 510 linux_boot = (kernel_filename != NULL); 511 if (linux_boot) { 512 kernel_base = KERNEL_LOAD_ADDR; 513 /* now we can load the kernel */ 514 kernel_size = load_image_targphys(kernel_filename, kernel_base, 515 machine->ram_size - kernel_base); 516 if (kernel_size < 0) { 517 error_report("could not load kernel '%s'", kernel_filename); 518 exit(1); 519 } 520 /* load initrd */ 521 if (initrd_filename) { 522 initrd_base = INITRD_LOAD_ADDR; 523 initrd_size = load_image_targphys(initrd_filename, initrd_base, 524 machine->ram_size - initrd_base); 525 if (initrd_size < 0) { 526 error_report("could not load initial ram disk '%s'", 527 initrd_filename); 528 exit(1); 529 } 530 } else { 531 initrd_base = 0; 532 initrd_size = 0; 533 } 534 } else { 535 kernel_base = 0; 536 kernel_size = 0; 537 initrd_base = 0; 538 initrd_size = 0; 539 } 540 } 541 542 static void taihu_class_init(ObjectClass *oc, void *data) 543 { 544 MachineClass *mc = MACHINE_CLASS(oc); 545 546 mc->desc = "taihu"; 547 mc->init = taihu_405ep_init; 548 mc->default_ram_size = 0x08000000; 549 mc->default_ram_id = "taihu_405ep.ram"; 550 } 551 552 static const TypeInfo taihu_type = { 553 .name = MACHINE_TYPE_NAME("taihu"), 554 .parent = TYPE_MACHINE, 555 .class_init = taihu_class_init, 556 }; 557 558 static void ppc405_machine_init(void) 559 { 560 type_register_static(&ref405ep_type); 561 type_register_static(&taihu_type); 562 } 563 564 type_init(ppc405_machine_init) 565