1 /* 2 * QEMU Malta board support 3 * 4 * Copyright (c) 2006 Aurelien Jarno 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 "qemu/bitops.h" 28 #include "qemu/datadir.h" 29 #include "qemu/guest-random.h" 30 #include "hw/clock.h" 31 #include "hw/southbridge/piix.h" 32 #include "hw/isa/superio.h" 33 #include "hw/char/serial.h" 34 #include "net/net.h" 35 #include "hw/boards.h" 36 #include "hw/i2c/smbus_eeprom.h" 37 #include "hw/block/flash.h" 38 #include "hw/mips/mips.h" 39 #include "hw/mips/bootloader.h" 40 #include "hw/pci/pci.h" 41 #include "hw/pci/pci_bus.h" 42 #include "qemu/log.h" 43 #include "hw/ide/pci.h" 44 #include "hw/irq.h" 45 #include "hw/loader.h" 46 #include "elf.h" 47 #include "qom/object.h" 48 #include "hw/sysbus.h" /* SysBusDevice */ 49 #include "qemu/host-utils.h" 50 #include "sysemu/qtest.h" 51 #include "sysemu/reset.h" 52 #include "sysemu/runstate.h" 53 #include "qapi/error.h" 54 #include "qemu/error-report.h" 55 #include "sysemu/kvm.h" 56 #include "semihosting/semihost.h" 57 #include "hw/mips/cps.h" 58 #include "hw/qdev-clock.h" 59 #include "target/mips/internal.h" 60 #include "trace.h" 61 #include "cpu.h" 62 63 #define ENVP_PADDR 0x2000 64 #define ENVP_VADDR cpu_mips_phys_to_kseg0(NULL, ENVP_PADDR) 65 #define ENVP_NB_ENTRIES 16 66 #define ENVP_ENTRY_SIZE 256 67 68 /* Hardware addresses */ 69 #define FLASH_ADDRESS 0x1e000000ULL 70 #define FPGA_ADDRESS 0x1f000000ULL 71 #define RESET_ADDRESS 0x1fc00000ULL 72 73 #define FLASH_SIZE 0x400000 74 #define BIOS_SIZE (4 * MiB) 75 76 #define PIIX4_PCI_DEVFN PCI_DEVFN(10, 0) 77 78 typedef struct { 79 MemoryRegion iomem; 80 MemoryRegion iomem_lo; /* 0 - 0x900 */ 81 MemoryRegion iomem_hi; /* 0xa00 - 0x100000 */ 82 uint32_t leds; 83 uint32_t brk; 84 uint32_t gpout; 85 uint32_t i2cin; 86 uint32_t i2coe; 87 uint32_t i2cout; 88 uint32_t i2csel; 89 CharBackend display; 90 char display_text[9]; 91 SerialMM *uart; 92 bool display_inited; 93 } MaltaFPGAState; 94 95 #if TARGET_BIG_ENDIAN 96 #define BIOS_FILENAME "mips_bios.bin" 97 #else 98 #define BIOS_FILENAME "mipsel_bios.bin" 99 #endif 100 101 #define TYPE_MIPS_MALTA "mips-malta" 102 OBJECT_DECLARE_SIMPLE_TYPE(MaltaState, MIPS_MALTA) 103 104 struct MaltaState { 105 SysBusDevice parent_obj; 106 107 Clock *cpuclk; 108 MIPSCPSState cps; 109 }; 110 111 static struct _loaderparams { 112 int ram_size, ram_low_size; 113 const char *kernel_filename; 114 const char *kernel_cmdline; 115 const char *initrd_filename; 116 } loaderparams; 117 118 /* Malta FPGA */ 119 static void malta_fpga_update_display_leds(MaltaFPGAState *s) 120 { 121 char leds_text[9]; 122 int i; 123 124 for (i = 7 ; i >= 0 ; i--) { 125 if (s->leds & (1 << i)) { 126 leds_text[i] = '#'; 127 } else { 128 leds_text[i] = ' '; 129 } 130 } 131 leds_text[8] = '\0'; 132 133 trace_malta_fpga_leds(leds_text); 134 qemu_chr_fe_printf(&s->display, "\e[H\n\n|\e[32m%-8.8s\e[00m|\r\n", 135 leds_text); 136 } 137 138 static void malta_fpga_update_display_ascii(MaltaFPGAState *s) 139 { 140 trace_malta_fpga_display(s->display_text); 141 qemu_chr_fe_printf(&s->display, "\n\n\n\n|\e[31m%-8.8s\e[00m|", 142 s->display_text); 143 } 144 145 /* 146 * EEPROM 24C01 / 24C02 emulation. 147 * 148 * Emulation for serial EEPROMs: 149 * 24C01 - 1024 bit (128 x 8) 150 * 24C02 - 2048 bit (256 x 8) 151 * 152 * Typical device names include Microchip 24C02SC or SGS Thomson ST24C02. 153 */ 154 155 #if defined(DEBUG) 156 # define logout(fmt, ...) \ 157 fprintf(stderr, "MALTA\t%-24s" fmt, __func__, ## __VA_ARGS__) 158 #else 159 # define logout(fmt, ...) ((void)0) 160 #endif 161 162 struct _eeprom24c0x_t { 163 uint8_t tick; 164 uint8_t address; 165 uint8_t command; 166 uint8_t ack; 167 uint8_t scl; 168 uint8_t sda; 169 uint8_t data; 170 /* uint16_t size; */ 171 uint8_t contents[256]; 172 }; 173 174 typedef struct _eeprom24c0x_t eeprom24c0x_t; 175 176 static eeprom24c0x_t spd_eeprom = { 177 .contents = { 178 /* 00000000: */ 179 0x80, 0x08, 0xFF, 0x0D, 0x0A, 0xFF, 0x40, 0x00, 180 /* 00000008: */ 181 0x01, 0x75, 0x54, 0x00, 0x82, 0x08, 0x00, 0x01, 182 /* 00000010: */ 183 0x8F, 0x04, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 184 /* 00000018: */ 185 0x00, 0x00, 0x00, 0x14, 0x0F, 0x14, 0x2D, 0xFF, 186 /* 00000020: */ 187 0x15, 0x08, 0x15, 0x08, 0x00, 0x00, 0x00, 0x00, 188 /* 00000028: */ 189 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 190 /* 00000030: */ 191 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 192 /* 00000038: */ 193 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x12, 0xD0, 194 /* 00000040: */ 195 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 196 /* 00000048: */ 197 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 198 /* 00000050: */ 199 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 200 /* 00000058: */ 201 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 202 /* 00000060: */ 203 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 204 /* 00000068: */ 205 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 206 /* 00000070: */ 207 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 208 /* 00000078: */ 209 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x64, 0xF4, 210 }, 211 }; 212 213 static void generate_eeprom_spd(uint8_t *eeprom, ram_addr_t ram_size) 214 { 215 enum sdram_type type; 216 uint8_t *spd = spd_eeprom.contents; 217 uint8_t nbanks = 0; 218 uint16_t density = 0; 219 int i; 220 221 /* work in terms of MB */ 222 ram_size /= MiB; 223 224 while ((ram_size >= 4) && (nbanks <= 2)) { 225 int sz_log2 = MIN(31 - clz32(ram_size), 14); 226 nbanks++; 227 density |= 1 << (sz_log2 - 2); 228 ram_size -= 1 << sz_log2; 229 } 230 231 /* split to 2 banks if possible */ 232 if ((nbanks == 1) && (density > 1)) { 233 nbanks++; 234 density >>= 1; 235 } 236 237 if (density & 0xff00) { 238 density = (density & 0xe0) | ((density >> 8) & 0x1f); 239 type = DDR2; 240 } else if (!(density & 0x1f)) { 241 type = DDR2; 242 } else { 243 type = SDR; 244 } 245 246 if (ram_size) { 247 warn_report("SPD cannot represent final " RAM_ADDR_FMT "MB" 248 " of SDRAM", ram_size); 249 } 250 251 /* fill in SPD memory information */ 252 spd[2] = type; 253 spd[5] = nbanks; 254 spd[31] = density; 255 256 /* checksum */ 257 spd[63] = 0; 258 for (i = 0; i < 63; i++) { 259 spd[63] += spd[i]; 260 } 261 262 /* copy for SMBUS */ 263 memcpy(eeprom, spd, sizeof(spd_eeprom.contents)); 264 } 265 266 static void generate_eeprom_serial(uint8_t *eeprom) 267 { 268 int i, pos = 0; 269 uint8_t mac[6] = { 0x00 }; 270 uint8_t sn[5] = { 0x01, 0x23, 0x45, 0x67, 0x89 }; 271 272 /* version */ 273 eeprom[pos++] = 0x01; 274 275 /* count */ 276 eeprom[pos++] = 0x02; 277 278 /* MAC address */ 279 eeprom[pos++] = 0x01; /* MAC */ 280 eeprom[pos++] = 0x06; /* length */ 281 memcpy(&eeprom[pos], mac, sizeof(mac)); 282 pos += sizeof(mac); 283 284 /* serial number */ 285 eeprom[pos++] = 0x02; /* serial */ 286 eeprom[pos++] = 0x05; /* length */ 287 memcpy(&eeprom[pos], sn, sizeof(sn)); 288 pos += sizeof(sn); 289 290 /* checksum */ 291 eeprom[pos] = 0; 292 for (i = 0; i < pos; i++) { 293 eeprom[pos] += eeprom[i]; 294 } 295 } 296 297 static uint8_t eeprom24c0x_read(eeprom24c0x_t *eeprom) 298 { 299 logout("%u: scl = %u, sda = %u, data = 0x%02x\n", 300 eeprom->tick, eeprom->scl, eeprom->sda, eeprom->data); 301 return eeprom->sda; 302 } 303 304 static void eeprom24c0x_write(eeprom24c0x_t *eeprom, int scl, int sda) 305 { 306 if (eeprom->scl && scl && (eeprom->sda != sda)) { 307 logout("%u: scl = %u->%u, sda = %u->%u i2c %s\n", 308 eeprom->tick, eeprom->scl, scl, eeprom->sda, sda, 309 sda ? "stop" : "start"); 310 if (!sda) { 311 eeprom->tick = 1; 312 eeprom->command = 0; 313 } 314 } else if (eeprom->tick == 0 && !eeprom->ack) { 315 /* Waiting for start. */ 316 logout("%u: scl = %u->%u, sda = %u->%u wait for i2c start\n", 317 eeprom->tick, eeprom->scl, scl, eeprom->sda, sda); 318 } else if (!eeprom->scl && scl) { 319 logout("%u: scl = %u->%u, sda = %u->%u trigger bit\n", 320 eeprom->tick, eeprom->scl, scl, eeprom->sda, sda); 321 if (eeprom->ack) { 322 logout("\ti2c ack bit = 0\n"); 323 sda = 0; 324 eeprom->ack = 0; 325 } else if (eeprom->sda == sda) { 326 uint8_t bit = (sda != 0); 327 logout("\ti2c bit = %d\n", bit); 328 if (eeprom->tick < 9) { 329 eeprom->command <<= 1; 330 eeprom->command += bit; 331 eeprom->tick++; 332 if (eeprom->tick == 9) { 333 logout("\tcommand 0x%04x, %s\n", eeprom->command, 334 bit ? "read" : "write"); 335 eeprom->ack = 1; 336 } 337 } else if (eeprom->tick < 17) { 338 if (eeprom->command & 1) { 339 sda = ((eeprom->data & 0x80) != 0); 340 } 341 eeprom->address <<= 1; 342 eeprom->address += bit; 343 eeprom->tick++; 344 eeprom->data <<= 1; 345 if (eeprom->tick == 17) { 346 eeprom->data = eeprom->contents[eeprom->address]; 347 logout("\taddress 0x%04x, data 0x%02x\n", 348 eeprom->address, eeprom->data); 349 eeprom->ack = 1; 350 eeprom->tick = 0; 351 } 352 } else if (eeprom->tick >= 17) { 353 sda = 0; 354 } 355 } else { 356 logout("\tsda changed with raising scl\n"); 357 } 358 } else { 359 logout("%u: scl = %u->%u, sda = %u->%u\n", eeprom->tick, eeprom->scl, 360 scl, eeprom->sda, sda); 361 } 362 eeprom->scl = scl; 363 eeprom->sda = sda; 364 } 365 366 static uint64_t malta_fpga_read(void *opaque, hwaddr addr, 367 unsigned size) 368 { 369 MaltaFPGAState *s = opaque; 370 uint32_t val = 0; 371 uint32_t saddr; 372 373 saddr = (addr & 0xfffff); 374 375 switch (saddr) { 376 377 /* SWITCH Register */ 378 case 0x00200: 379 val = 0x00000000; 380 break; 381 382 /* STATUS Register */ 383 case 0x00208: 384 #if TARGET_BIG_ENDIAN 385 val = 0x00000012; 386 #else 387 val = 0x00000010; 388 #endif 389 break; 390 391 /* JMPRS Register */ 392 case 0x00210: 393 val = 0x00; 394 break; 395 396 /* LEDBAR Register */ 397 case 0x00408: 398 val = s->leds; 399 break; 400 401 /* BRKRES Register */ 402 case 0x00508: 403 val = s->brk; 404 break; 405 406 /* UART Registers are handled directly by the serial device */ 407 408 /* GPOUT Register */ 409 case 0x00a00: 410 val = s->gpout; 411 break; 412 413 /* XXX: implement a real I2C controller */ 414 415 /* GPINP Register */ 416 case 0x00a08: 417 /* IN = OUT until a real I2C control is implemented */ 418 if (s->i2csel) { 419 val = s->i2cout; 420 } else { 421 val = 0x00; 422 } 423 break; 424 425 /* I2CINP Register */ 426 case 0x00b00: 427 val = ((s->i2cin & ~1) | eeprom24c0x_read(&spd_eeprom)); 428 break; 429 430 /* I2COE Register */ 431 case 0x00b08: 432 val = s->i2coe; 433 break; 434 435 /* I2COUT Register */ 436 case 0x00b10: 437 val = s->i2cout; 438 break; 439 440 /* I2CSEL Register */ 441 case 0x00b18: 442 val = s->i2csel; 443 break; 444 445 default: 446 qemu_log_mask(LOG_GUEST_ERROR, 447 "malta_fpga_read: Bad register addr 0x%"HWADDR_PRIX"\n", 448 addr); 449 break; 450 } 451 return val; 452 } 453 454 static void malta_fpga_write(void *opaque, hwaddr addr, 455 uint64_t val, unsigned size) 456 { 457 MaltaFPGAState *s = opaque; 458 uint32_t saddr; 459 460 saddr = (addr & 0xfffff); 461 462 switch (saddr) { 463 464 /* SWITCH Register */ 465 case 0x00200: 466 break; 467 468 /* JMPRS Register */ 469 case 0x00210: 470 break; 471 472 /* LEDBAR Register */ 473 case 0x00408: 474 s->leds = val & 0xff; 475 malta_fpga_update_display_leds(s); 476 break; 477 478 /* ASCIIWORD Register */ 479 case 0x00410: 480 snprintf(s->display_text, 9, "%08X", (uint32_t)val); 481 malta_fpga_update_display_ascii(s); 482 break; 483 484 /* ASCIIPOS0 to ASCIIPOS7 Registers */ 485 case 0x00418: 486 case 0x00420: 487 case 0x00428: 488 case 0x00430: 489 case 0x00438: 490 case 0x00440: 491 case 0x00448: 492 case 0x00450: 493 s->display_text[(saddr - 0x00418) >> 3] = (char) val; 494 malta_fpga_update_display_ascii(s); 495 break; 496 497 /* SOFTRES Register */ 498 case 0x00500: 499 if (val == 0x42) { 500 qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); 501 } 502 break; 503 504 /* BRKRES Register */ 505 case 0x00508: 506 s->brk = val & 0xff; 507 break; 508 509 /* UART Registers are handled directly by the serial device */ 510 511 /* GPOUT Register */ 512 case 0x00a00: 513 s->gpout = val & 0xff; 514 break; 515 516 /* I2COE Register */ 517 case 0x00b08: 518 s->i2coe = val & 0x03; 519 break; 520 521 /* I2COUT Register */ 522 case 0x00b10: 523 eeprom24c0x_write(&spd_eeprom, val & 0x02, val & 0x01); 524 s->i2cout = val; 525 break; 526 527 /* I2CSEL Register */ 528 case 0x00b18: 529 s->i2csel = val & 0x01; 530 break; 531 532 default: 533 qemu_log_mask(LOG_GUEST_ERROR, 534 "malta_fpga_write: Bad register addr 0x%"HWADDR_PRIX"\n", 535 addr); 536 break; 537 } 538 } 539 540 static const MemoryRegionOps malta_fpga_ops = { 541 .read = malta_fpga_read, 542 .write = malta_fpga_write, 543 .endianness = DEVICE_NATIVE_ENDIAN, 544 }; 545 546 static void malta_fpga_reset(void *opaque) 547 { 548 MaltaFPGAState *s = opaque; 549 550 s->leds = 0x00; 551 s->brk = 0x0a; 552 s->gpout = 0x00; 553 s->i2cin = 0x3; 554 s->i2coe = 0x0; 555 s->i2cout = 0x3; 556 s->i2csel = 0x1; 557 558 s->display_text[8] = '\0'; 559 snprintf(s->display_text, 9, " "); 560 } 561 562 static void malta_fgpa_display_event(void *opaque, QEMUChrEvent event) 563 { 564 MaltaFPGAState *s = opaque; 565 566 if (event == CHR_EVENT_OPENED && !s->display_inited) { 567 qemu_chr_fe_printf(&s->display, "\e[HMalta LEDBAR\r\n"); 568 qemu_chr_fe_printf(&s->display, "+--------+\r\n"); 569 qemu_chr_fe_printf(&s->display, "+ +\r\n"); 570 qemu_chr_fe_printf(&s->display, "+--------+\r\n"); 571 qemu_chr_fe_printf(&s->display, "\n"); 572 qemu_chr_fe_printf(&s->display, "Malta ASCII\r\n"); 573 qemu_chr_fe_printf(&s->display, "+--------+\r\n"); 574 qemu_chr_fe_printf(&s->display, "+ +\r\n"); 575 qemu_chr_fe_printf(&s->display, "+--------+\r\n"); 576 s->display_inited = true; 577 } 578 } 579 580 static MaltaFPGAState *malta_fpga_init(MemoryRegion *address_space, 581 hwaddr base, qemu_irq uart_irq, Chardev *uart_chr) 582 { 583 MaltaFPGAState *s; 584 Chardev *chr; 585 586 s = g_new0(MaltaFPGAState, 1); 587 588 memory_region_init_io(&s->iomem, NULL, &malta_fpga_ops, s, 589 "malta-fpga", 0x100000); 590 memory_region_init_alias(&s->iomem_lo, NULL, "malta-fpga", 591 &s->iomem, 0, 0x900); 592 memory_region_init_alias(&s->iomem_hi, NULL, "malta-fpga", 593 &s->iomem, 0xa00, 0x100000 - 0xa00); 594 595 memory_region_add_subregion(address_space, base, &s->iomem_lo); 596 memory_region_add_subregion(address_space, base + 0xa00, &s->iomem_hi); 597 598 chr = qemu_chr_new("fpga", "vc:320x200", NULL); 599 qemu_chr_fe_init(&s->display, chr, NULL); 600 qemu_chr_fe_set_handlers(&s->display, NULL, NULL, 601 malta_fgpa_display_event, NULL, s, NULL, true); 602 603 s->uart = serial_mm_init(address_space, base + 0x900, 3, uart_irq, 604 230400, uart_chr, DEVICE_NATIVE_ENDIAN); 605 606 malta_fpga_reset(s); 607 qemu_register_reset(malta_fpga_reset, s); 608 609 return s; 610 } 611 612 /* Network support */ 613 static void network_init(PCIBus *pci_bus) 614 { 615 int i; 616 617 for (i = 0; i < nb_nics; i++) { 618 NICInfo *nd = &nd_table[i]; 619 const char *default_devaddr = NULL; 620 621 if (i == 0 && (!nd->model || strcmp(nd->model, "pcnet") == 0)) 622 /* The malta board has a PCNet card using PCI SLOT 11 */ 623 default_devaddr = "0b"; 624 625 pci_nic_init_nofail(nd, pci_bus, "pcnet", default_devaddr); 626 } 627 } 628 629 static void bl_setup_gt64120_jump_kernel(void **p, uint64_t run_addr, 630 uint64_t kernel_entry) 631 { 632 static const char pci_pins_cfg[PCI_NUM_PINS] = { 633 10, 10, 11, 11 /* PIIX IRQRC[A:D] */ 634 }; 635 636 /* Bus endianness is always reversed */ 637 #if TARGET_BIG_ENDIAN 638 #define cpu_to_gt32(x) (x) 639 #else 640 #define cpu_to_gt32(x) bswap32(x) 641 #endif 642 643 /* setup MEM-to-PCI0 mapping as done by YAMON */ 644 645 /* move GT64120 registers from 0x14000000 to 0x1be00000 */ 646 bl_gen_write_u32(p, /* GT_ISD */ 647 cpu_mips_phys_to_kseg1(NULL, 0x14000000 + 0x68), 648 cpu_to_gt32(0x1be00000 << 3)); 649 650 /* setup PCI0 io window to 0x18000000-0x181fffff */ 651 bl_gen_write_u32(p, /* GT_PCI0IOLD */ 652 cpu_mips_phys_to_kseg1(NULL, 0x1be00000 + 0x48), 653 cpu_to_gt32(0x18000000 << 3)); 654 bl_gen_write_u32(p, /* GT_PCI0IOHD */ 655 cpu_mips_phys_to_kseg1(NULL, 0x1be00000 + 0x50), 656 cpu_to_gt32(0x08000000 << 3)); 657 658 /* setup PCI0 mem windows */ 659 bl_gen_write_u32(p, /* GT_PCI0M0LD */ 660 cpu_mips_phys_to_kseg1(NULL, 0x1be00000 + 0x58), 661 cpu_to_gt32(0x10000000 << 3)); 662 bl_gen_write_u32(p, /* GT_PCI0M0HD */ 663 cpu_mips_phys_to_kseg1(NULL, 0x1be00000 + 0x60), 664 cpu_to_gt32(0x07e00000 << 3)); 665 bl_gen_write_u32(p, /* GT_PCI0M1LD */ 666 cpu_mips_phys_to_kseg1(NULL, 0x1be00000 + 0x80), 667 cpu_to_gt32(0x18200000 << 3)); 668 bl_gen_write_u32(p, /* GT_PCI0M1HD */ 669 cpu_mips_phys_to_kseg1(NULL, 0x1be00000 + 0x88), 670 cpu_to_gt32(0x0bc00000 << 3)); 671 672 #undef cpu_to_gt32 673 674 /* 675 * The PIIX ISA bridge is on PCI bus 0 dev 10 func 0. 676 * Load the PIIX IRQC[A:D] routing config address, then 677 * write routing configuration to the config data register. 678 */ 679 bl_gen_write_u32(p, /* GT_PCI0_CFGADDR */ 680 cpu_mips_phys_to_kseg1(NULL, 0x1be00000 + 0xcf8), 681 tswap32((1 << 31) /* ConfigEn */ 682 | PCI_BUILD_BDF(0, PIIX4_PCI_DEVFN) << 8 683 | PIIX_PIRQCA)); 684 bl_gen_write_u32(p, /* GT_PCI0_CFGDATA */ 685 cpu_mips_phys_to_kseg1(NULL, 0x1be00000 + 0xcfc), 686 tswap32(ldl_be_p(pci_pins_cfg))); 687 688 bl_gen_jump_kernel(p, 689 true, ENVP_VADDR - 64, 690 /* 691 * If semihosting is used, arguments have already 692 * been passed, so we preserve $a0. 693 */ 694 !semihosting_get_argc(), 2, 695 true, ENVP_VADDR, 696 true, ENVP_VADDR + 8, 697 true, loaderparams.ram_low_size, 698 kernel_entry); 699 } 700 701 static void write_bootloader_nanomips(uint8_t *base, uint64_t run_addr, 702 uint64_t kernel_entry) 703 { 704 uint16_t *p; 705 706 /* Small bootloader */ 707 p = (uint16_t *)base; 708 709 stw_p(p++, 0x2800); stw_p(p++, 0x001c); 710 /* bc to_here */ 711 stw_p(p++, 0x8000); stw_p(p++, 0xc000); 712 /* nop */ 713 stw_p(p++, 0x8000); stw_p(p++, 0xc000); 714 /* nop */ 715 stw_p(p++, 0x8000); stw_p(p++, 0xc000); 716 /* nop */ 717 stw_p(p++, 0x8000); stw_p(p++, 0xc000); 718 /* nop */ 719 stw_p(p++, 0x8000); stw_p(p++, 0xc000); 720 /* nop */ 721 stw_p(p++, 0x8000); stw_p(p++, 0xc000); 722 /* nop */ 723 stw_p(p++, 0x8000); stw_p(p++, 0xc000); 724 /* nop */ 725 726 /* to_here: */ 727 728 bl_setup_gt64120_jump_kernel((void **)&p, run_addr, kernel_entry); 729 } 730 731 /* 732 * ROM and pseudo bootloader 733 * 734 * The following code implements a very very simple bootloader. It first 735 * loads the registers a0 to a3 to the values expected by the OS, and 736 * then jump at the kernel address. 737 * 738 * The bootloader should pass the locations of the kernel arguments and 739 * environment variables tables. Those tables contain the 32-bit address 740 * of NULL terminated strings. The environment variables table should be 741 * terminated by a NULL address. 742 * 743 * For a simpler implementation, the number of kernel arguments is fixed 744 * to two (the name of the kernel and the command line), and the two 745 * tables are actually the same one. 746 * 747 * The registers a0 to a3 should contain the following values: 748 * a0 - number of kernel arguments 749 * a1 - 32-bit address of the kernel arguments table 750 * a2 - 32-bit address of the environment variables table 751 * a3 - RAM size in bytes 752 */ 753 static void write_bootloader(uint8_t *base, uint64_t run_addr, 754 uint64_t kernel_entry) 755 { 756 uint32_t *p; 757 758 /* Small bootloader */ 759 p = (uint32_t *)base; 760 761 stl_p(p++, 0x08000000 | /* j 0x1fc00580 */ 762 ((run_addr + 0x580) & 0x0fffffff) >> 2); 763 stl_p(p++, 0x00000000); /* nop */ 764 765 /* YAMON service vector */ 766 stl_p(base + 0x500, run_addr + 0x0580); /* start: */ 767 stl_p(base + 0x504, run_addr + 0x083c); /* print_count: */ 768 stl_p(base + 0x520, run_addr + 0x0580); /* start: */ 769 stl_p(base + 0x52c, run_addr + 0x0800); /* flush_cache: */ 770 stl_p(base + 0x534, run_addr + 0x0808); /* print: */ 771 stl_p(base + 0x538, run_addr + 0x0800); /* reg_cpu_isr: */ 772 stl_p(base + 0x53c, run_addr + 0x0800); /* unred_cpu_isr: */ 773 stl_p(base + 0x540, run_addr + 0x0800); /* reg_ic_isr: */ 774 stl_p(base + 0x544, run_addr + 0x0800); /* unred_ic_isr: */ 775 stl_p(base + 0x548, run_addr + 0x0800); /* reg_esr: */ 776 stl_p(base + 0x54c, run_addr + 0x0800); /* unreg_esr: */ 777 stl_p(base + 0x550, run_addr + 0x0800); /* getchar: */ 778 stl_p(base + 0x554, run_addr + 0x0800); /* syscon_read: */ 779 780 781 /* Second part of the bootloader */ 782 p = (uint32_t *) (base + 0x580); 783 784 /* 785 * Load BAR registers as done by YAMON: 786 * 787 * - set up PCI0 I/O BARs from 0x18000000 to 0x181fffff 788 * - set up PCI0 MEM0 at 0x10000000, size 0x7e00000 789 * - set up PCI0 MEM1 at 0x18200000, size 0xbc00000 790 * 791 */ 792 793 bl_setup_gt64120_jump_kernel((void **)&p, run_addr, kernel_entry); 794 795 /* YAMON subroutines */ 796 p = (uint32_t *) (base + 0x800); 797 stl_p(p++, 0x03e00009); /* jalr ra */ 798 stl_p(p++, 0x24020000); /* li v0,0 */ 799 /* 808 YAMON print */ 800 stl_p(p++, 0x03e06821); /* move t5,ra */ 801 stl_p(p++, 0x00805821); /* move t3,a0 */ 802 stl_p(p++, 0x00a05021); /* move t2,a1 */ 803 stl_p(p++, 0x91440000); /* lbu a0,0(t2) */ 804 stl_p(p++, 0x254a0001); /* addiu t2,t2,1 */ 805 stl_p(p++, 0x10800005); /* beqz a0,834 */ 806 stl_p(p++, 0x00000000); /* nop */ 807 stl_p(p++, 0x0ff0021c); /* jal 870 */ 808 stl_p(p++, 0x00000000); /* nop */ 809 stl_p(p++, 0x1000fff9); /* b 814 */ 810 stl_p(p++, 0x00000000); /* nop */ 811 stl_p(p++, 0x01a00009); /* jalr t5 */ 812 stl_p(p++, 0x01602021); /* move a0,t3 */ 813 /* 0x83c YAMON print_count */ 814 stl_p(p++, 0x03e06821); /* move t5,ra */ 815 stl_p(p++, 0x00805821); /* move t3,a0 */ 816 stl_p(p++, 0x00a05021); /* move t2,a1 */ 817 stl_p(p++, 0x00c06021); /* move t4,a2 */ 818 stl_p(p++, 0x91440000); /* lbu a0,0(t2) */ 819 stl_p(p++, 0x0ff0021c); /* jal 870 */ 820 stl_p(p++, 0x00000000); /* nop */ 821 stl_p(p++, 0x254a0001); /* addiu t2,t2,1 */ 822 stl_p(p++, 0x258cffff); /* addiu t4,t4,-1 */ 823 stl_p(p++, 0x1580fffa); /* bnez t4,84c */ 824 stl_p(p++, 0x00000000); /* nop */ 825 stl_p(p++, 0x01a00009); /* jalr t5 */ 826 stl_p(p++, 0x01602021); /* move a0,t3 */ 827 /* 0x870 */ 828 stl_p(p++, 0x3c08b800); /* lui t0,0xb400 */ 829 stl_p(p++, 0x350803f8); /* ori t0,t0,0x3f8 */ 830 stl_p(p++, 0x91090005); /* lbu t1,5(t0) */ 831 stl_p(p++, 0x00000000); /* nop */ 832 stl_p(p++, 0x31290040); /* andi t1,t1,0x40 */ 833 stl_p(p++, 0x1120fffc); /* beqz t1,878 <outch+0x8> */ 834 stl_p(p++, 0x00000000); /* nop */ 835 stl_p(p++, 0x03e00009); /* jalr ra */ 836 stl_p(p++, 0xa1040000); /* sb a0,0(t0) */ 837 } 838 839 static void G_GNUC_PRINTF(3, 4) prom_set(uint32_t *prom_buf, int index, 840 const char *string, ...) 841 { 842 va_list ap; 843 uint32_t table_addr; 844 845 if (index >= ENVP_NB_ENTRIES) { 846 return; 847 } 848 849 if (string == NULL) { 850 prom_buf[index] = 0; 851 return; 852 } 853 854 table_addr = sizeof(uint32_t) * ENVP_NB_ENTRIES + index * ENVP_ENTRY_SIZE; 855 prom_buf[index] = tswap32(ENVP_VADDR + table_addr); 856 857 va_start(ap, string); 858 vsnprintf((char *)prom_buf + table_addr, ENVP_ENTRY_SIZE, string, ap); 859 va_end(ap); 860 } 861 862 static void reinitialize_rng_seed(void *opaque) 863 { 864 char *rng_seed_hex = opaque; 865 uint8_t rng_seed[32]; 866 867 qemu_guest_getrandom_nofail(rng_seed, sizeof(rng_seed)); 868 for (size_t i = 0; i < sizeof(rng_seed); ++i) { 869 sprintf(rng_seed_hex + i * 2, "%02x", rng_seed[i]); 870 } 871 } 872 873 /* Kernel */ 874 static uint64_t load_kernel(void) 875 { 876 uint64_t kernel_entry, kernel_high, initrd_size; 877 long kernel_size; 878 ram_addr_t initrd_offset; 879 uint32_t *prom_buf; 880 long prom_size; 881 int prom_index = 0; 882 uint8_t rng_seed[32]; 883 char rng_seed_hex[sizeof(rng_seed) * 2 + 1]; 884 size_t rng_seed_prom_offset; 885 886 kernel_size = load_elf(loaderparams.kernel_filename, NULL, 887 cpu_mips_kseg0_to_phys, NULL, 888 &kernel_entry, NULL, 889 &kernel_high, NULL, TARGET_BIG_ENDIAN, EM_MIPS, 890 1, 0); 891 if (kernel_size < 0) { 892 error_report("could not load kernel '%s': %s", 893 loaderparams.kernel_filename, 894 load_elf_strerror(kernel_size)); 895 exit(1); 896 } 897 898 /* Check where the kernel has been linked */ 899 if (kernel_entry <= USEG_LIMIT) { 900 error_report("Trap-and-Emul kernels (Linux CONFIG_KVM_GUEST)" 901 " are not supported"); 902 exit(1); 903 } 904 905 /* load initrd */ 906 initrd_size = 0; 907 initrd_offset = 0; 908 if (loaderparams.initrd_filename) { 909 initrd_size = get_image_size(loaderparams.initrd_filename); 910 if (initrd_size > 0) { 911 /* 912 * The kernel allocates the bootmap memory in the low memory after 913 * the initrd. It takes at most 128kiB for 2GB RAM and 4kiB 914 * pages. 915 */ 916 initrd_offset = ROUND_UP(loaderparams.ram_low_size 917 - (initrd_size + 128 * KiB), 918 INITRD_PAGE_SIZE); 919 if (kernel_high >= initrd_offset) { 920 error_report("memory too small for initial ram disk '%s'", 921 loaderparams.initrd_filename); 922 exit(1); 923 } 924 initrd_size = load_image_targphys(loaderparams.initrd_filename, 925 initrd_offset, 926 loaderparams.ram_size - initrd_offset); 927 } 928 if (initrd_size == (target_ulong) -1) { 929 error_report("could not load initial ram disk '%s'", 930 loaderparams.initrd_filename); 931 exit(1); 932 } 933 } 934 935 /* Setup prom parameters. */ 936 prom_size = ENVP_NB_ENTRIES * (sizeof(int32_t) + ENVP_ENTRY_SIZE); 937 prom_buf = g_malloc(prom_size); 938 939 prom_set(prom_buf, prom_index++, "%s", loaderparams.kernel_filename); 940 if (initrd_size > 0) { 941 prom_set(prom_buf, prom_index++, 942 "rd_start=0x%" PRIx64 " rd_size=%" PRId64 " %s", 943 cpu_mips_phys_to_kseg0(NULL, initrd_offset), 944 initrd_size, loaderparams.kernel_cmdline); 945 } else { 946 prom_set(prom_buf, prom_index++, "%s", loaderparams.kernel_cmdline); 947 } 948 949 prom_set(prom_buf, prom_index++, "memsize"); 950 prom_set(prom_buf, prom_index++, "%u", loaderparams.ram_low_size); 951 952 prom_set(prom_buf, prom_index++, "ememsize"); 953 prom_set(prom_buf, prom_index++, "%u", loaderparams.ram_size); 954 955 prom_set(prom_buf, prom_index++, "modetty0"); 956 prom_set(prom_buf, prom_index++, "38400n8r"); 957 958 qemu_guest_getrandom_nofail(rng_seed, sizeof(rng_seed)); 959 for (size_t i = 0; i < sizeof(rng_seed); ++i) { 960 sprintf(rng_seed_hex + i * 2, "%02x", rng_seed[i]); 961 } 962 prom_set(prom_buf, prom_index++, "rngseed"); 963 rng_seed_prom_offset = prom_index * ENVP_ENTRY_SIZE + 964 sizeof(uint32_t) * ENVP_NB_ENTRIES; 965 prom_set(prom_buf, prom_index++, "%s", rng_seed_hex); 966 967 prom_set(prom_buf, prom_index++, NULL); 968 969 rom_add_blob_fixed("prom", prom_buf, prom_size, ENVP_PADDR); 970 qemu_register_reset_nosnapshotload(reinitialize_rng_seed, 971 rom_ptr(ENVP_PADDR, prom_size) + rng_seed_prom_offset); 972 973 g_free(prom_buf); 974 return kernel_entry; 975 } 976 977 static void malta_mips_config(MIPSCPU *cpu) 978 { 979 MachineState *ms = MACHINE(qdev_get_machine()); 980 unsigned int smp_cpus = ms->smp.cpus; 981 CPUMIPSState *env = &cpu->env; 982 CPUState *cs = CPU(cpu); 983 984 if (ase_mt_available(env)) { 985 env->mvp->CP0_MVPConf0 = deposit32(env->mvp->CP0_MVPConf0, 986 CP0MVPC0_PTC, 8, 987 smp_cpus * cs->nr_threads - 1); 988 env->mvp->CP0_MVPConf0 = deposit32(env->mvp->CP0_MVPConf0, 989 CP0MVPC0_PVPE, 4, smp_cpus - 1); 990 } 991 } 992 993 static int malta_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num) 994 { 995 int slot; 996 997 slot = PCI_SLOT(pci_dev->devfn); 998 999 switch (slot) { 1000 /* PIIX4 USB */ 1001 case 10: 1002 return 3; 1003 /* AMD 79C973 Ethernet */ 1004 case 11: 1005 return 1; 1006 /* Crystal 4281 Sound */ 1007 case 12: 1008 return 2; 1009 /* PCI slot 1 to 4 */ 1010 case 18 ... 21: 1011 return ((slot - 18) + irq_num) & 0x03; 1012 /* Unknown device, don't do any translation */ 1013 default: 1014 return irq_num; 1015 } 1016 } 1017 1018 static void main_cpu_reset(void *opaque) 1019 { 1020 MIPSCPU *cpu = opaque; 1021 CPUMIPSState *env = &cpu->env; 1022 1023 cpu_reset(CPU(cpu)); 1024 1025 /* 1026 * The bootloader does not need to be rewritten as it is located in a 1027 * read only location. The kernel location and the arguments table 1028 * location does not change. 1029 */ 1030 if (loaderparams.kernel_filename) { 1031 env->CP0_Status &= ~(1 << CP0St_ERL); 1032 } 1033 1034 malta_mips_config(cpu); 1035 } 1036 1037 static void create_cpu_without_cps(MachineState *ms, MaltaState *s, 1038 qemu_irq *cbus_irq, qemu_irq *i8259_irq) 1039 { 1040 CPUMIPSState *env; 1041 MIPSCPU *cpu; 1042 int i; 1043 1044 for (i = 0; i < ms->smp.cpus; i++) { 1045 cpu = mips_cpu_create_with_clock(ms->cpu_type, s->cpuclk); 1046 1047 /* Init internal devices */ 1048 cpu_mips_irq_init_cpu(cpu); 1049 cpu_mips_clock_init(cpu); 1050 qemu_register_reset(main_cpu_reset, cpu); 1051 } 1052 1053 cpu = MIPS_CPU(first_cpu); 1054 env = &cpu->env; 1055 *i8259_irq = env->irq[2]; 1056 *cbus_irq = env->irq[4]; 1057 } 1058 1059 static void create_cps(MachineState *ms, MaltaState *s, 1060 qemu_irq *cbus_irq, qemu_irq *i8259_irq) 1061 { 1062 object_initialize_child(OBJECT(s), "cps", &s->cps, TYPE_MIPS_CPS); 1063 object_property_set_str(OBJECT(&s->cps), "cpu-type", ms->cpu_type, 1064 &error_fatal); 1065 object_property_set_uint(OBJECT(&s->cps), "num-vp", ms->smp.cpus, 1066 &error_fatal); 1067 qdev_connect_clock_in(DEVICE(&s->cps), "clk-in", s->cpuclk); 1068 sysbus_realize(SYS_BUS_DEVICE(&s->cps), &error_fatal); 1069 1070 sysbus_mmio_map_overlap(SYS_BUS_DEVICE(&s->cps), 0, 0, 1); 1071 1072 *i8259_irq = get_cps_irq(&s->cps, 3); 1073 *cbus_irq = NULL; 1074 } 1075 1076 static void mips_create_cpu(MachineState *ms, MaltaState *s, 1077 qemu_irq *cbus_irq, qemu_irq *i8259_irq) 1078 { 1079 if ((ms->smp.cpus > 1) && cpu_type_supports_cps_smp(ms->cpu_type)) { 1080 create_cps(ms, s, cbus_irq, i8259_irq); 1081 } else { 1082 create_cpu_without_cps(ms, s, cbus_irq, i8259_irq); 1083 } 1084 } 1085 1086 static 1087 void mips_malta_init(MachineState *machine) 1088 { 1089 ram_addr_t ram_size = machine->ram_size; 1090 ram_addr_t ram_low_size; 1091 const char *kernel_filename = machine->kernel_filename; 1092 const char *kernel_cmdline = machine->kernel_cmdline; 1093 const char *initrd_filename = machine->initrd_filename; 1094 char *filename; 1095 PFlashCFI01 *fl; 1096 MemoryRegion *system_memory = get_system_memory(); 1097 MemoryRegion *ram_low_preio = g_new(MemoryRegion, 1); 1098 MemoryRegion *ram_low_postio; 1099 MemoryRegion *bios, *bios_copy = g_new(MemoryRegion, 1); 1100 const size_t smbus_eeprom_size = 8 * 256; 1101 uint8_t *smbus_eeprom_buf = g_malloc0(smbus_eeprom_size); 1102 uint64_t kernel_entry, bootloader_run_addr; 1103 PCIBus *pci_bus; 1104 ISABus *isa_bus; 1105 qemu_irq cbus_irq, i8259_irq; 1106 I2CBus *smbus; 1107 DriveInfo *dinfo; 1108 int fl_idx = 0; 1109 MaltaState *s; 1110 PCIDevice *piix4; 1111 DeviceState *dev; 1112 1113 s = MIPS_MALTA(qdev_new(TYPE_MIPS_MALTA)); 1114 sysbus_realize_and_unref(SYS_BUS_DEVICE(s), &error_fatal); 1115 1116 /* create CPU */ 1117 mips_create_cpu(machine, s, &cbus_irq, &i8259_irq); 1118 1119 /* allocate RAM */ 1120 if (ram_size > 2 * GiB) { 1121 error_report("Too much memory for this machine: %" PRId64 "MB," 1122 " maximum 2048MB", ram_size / MiB); 1123 exit(1); 1124 } 1125 1126 /* register RAM at high address where it is undisturbed by IO */ 1127 memory_region_add_subregion(system_memory, 0x80000000, machine->ram); 1128 1129 /* alias for pre IO hole access */ 1130 memory_region_init_alias(ram_low_preio, NULL, "mips_malta_low_preio.ram", 1131 machine->ram, 0, MIN(ram_size, 256 * MiB)); 1132 memory_region_add_subregion(system_memory, 0, ram_low_preio); 1133 1134 /* alias for post IO hole access, if there is enough RAM */ 1135 if (ram_size > 512 * MiB) { 1136 ram_low_postio = g_new(MemoryRegion, 1); 1137 memory_region_init_alias(ram_low_postio, NULL, 1138 "mips_malta_low_postio.ram", 1139 machine->ram, 512 * MiB, 1140 ram_size - 512 * MiB); 1141 memory_region_add_subregion(system_memory, 512 * MiB, 1142 ram_low_postio); 1143 } 1144 1145 /* FPGA */ 1146 1147 /* The CBUS UART is attached to the MIPS CPU INT2 pin, ie interrupt 4 */ 1148 malta_fpga_init(system_memory, FPGA_ADDRESS, cbus_irq, serial_hd(2)); 1149 1150 /* Load firmware in flash / BIOS. */ 1151 dinfo = drive_get(IF_PFLASH, 0, fl_idx); 1152 fl = pflash_cfi01_register(FLASH_ADDRESS, "mips_malta.bios", 1153 FLASH_SIZE, 1154 dinfo ? blk_by_legacy_dinfo(dinfo) : NULL, 1155 65536, 1156 4, 0x0000, 0x0000, 0x0000, 0x0000, 1157 TARGET_BIG_ENDIAN); 1158 bios = pflash_cfi01_get_memory(fl); 1159 fl_idx++; 1160 if (kernel_filename) { 1161 ram_low_size = MIN(ram_size, 256 * MiB); 1162 bootloader_run_addr = cpu_mips_phys_to_kseg0(NULL, RESET_ADDRESS); 1163 1164 /* Write a small bootloader to the flash location. */ 1165 loaderparams.ram_size = ram_size; 1166 loaderparams.ram_low_size = ram_low_size; 1167 loaderparams.kernel_filename = kernel_filename; 1168 loaderparams.kernel_cmdline = kernel_cmdline; 1169 loaderparams.initrd_filename = initrd_filename; 1170 kernel_entry = load_kernel(); 1171 1172 if (!cpu_type_supports_isa(machine->cpu_type, ISA_NANOMIPS32)) { 1173 write_bootloader(memory_region_get_ram_ptr(bios), 1174 bootloader_run_addr, kernel_entry); 1175 } else { 1176 write_bootloader_nanomips(memory_region_get_ram_ptr(bios), 1177 bootloader_run_addr, kernel_entry); 1178 } 1179 } else { 1180 target_long bios_size = FLASH_SIZE; 1181 /* Load firmware from flash. */ 1182 if (!dinfo) { 1183 /* Load a BIOS image. */ 1184 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, 1185 machine->firmware ?: BIOS_FILENAME); 1186 if (filename) { 1187 bios_size = load_image_targphys(filename, FLASH_ADDRESS, 1188 BIOS_SIZE); 1189 g_free(filename); 1190 } else { 1191 bios_size = -1; 1192 } 1193 if ((bios_size < 0 || bios_size > BIOS_SIZE) && 1194 machine->firmware && !qtest_enabled()) { 1195 error_report("Could not load MIPS bios '%s'", machine->firmware); 1196 exit(1); 1197 } 1198 } 1199 /* 1200 * In little endian mode the 32bit words in the bios are swapped, 1201 * a neat trick which allows bi-endian firmware. 1202 */ 1203 #if !TARGET_BIG_ENDIAN 1204 { 1205 uint32_t *end, *addr; 1206 const size_t swapsize = MIN(bios_size, 0x3e0000); 1207 addr = rom_ptr(FLASH_ADDRESS, swapsize); 1208 if (!addr) { 1209 addr = memory_region_get_ram_ptr(bios); 1210 } 1211 end = (void *)addr + swapsize; 1212 while (addr < end) { 1213 bswap32s(addr); 1214 addr++; 1215 } 1216 } 1217 #endif 1218 } 1219 1220 /* 1221 * Map the BIOS at a 2nd physical location, as on the real board. 1222 * Copy it so that we can patch in the MIPS revision, which cannot be 1223 * handled by an overlapping region as the resulting ROM code subpage 1224 * regions are not executable. 1225 */ 1226 memory_region_init_ram(bios_copy, NULL, "bios.1fc", BIOS_SIZE, 1227 &error_fatal); 1228 if (!rom_copy(memory_region_get_ram_ptr(bios_copy), 1229 FLASH_ADDRESS, BIOS_SIZE)) { 1230 memcpy(memory_region_get_ram_ptr(bios_copy), 1231 memory_region_get_ram_ptr(bios), BIOS_SIZE); 1232 } 1233 memory_region_set_readonly(bios_copy, true); 1234 memory_region_add_subregion(system_memory, RESET_ADDRESS, bios_copy); 1235 1236 /* Board ID = 0x420 (Malta Board with CoreLV) */ 1237 stl_p(memory_region_get_ram_ptr(bios_copy) + 0x10, 0x00000420); 1238 1239 /* Northbridge */ 1240 dev = qdev_new("gt64120"); 1241 qdev_prop_set_bit(dev, "cpu-little-endian", !TARGET_BIG_ENDIAN); 1242 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); 1243 pci_bus = PCI_BUS(qdev_get_child_bus(dev, "pci")); 1244 pci_bus_map_irqs(pci_bus, malta_pci_slot_get_pirq); 1245 1246 /* Southbridge */ 1247 piix4 = pci_new_multifunction(PIIX4_PCI_DEVFN, TYPE_PIIX4_PCI_DEVICE); 1248 qdev_prop_set_uint32(DEVICE(piix4), "smb_io_base", 0x1100); 1249 pci_realize_and_unref(piix4, pci_bus, &error_fatal); 1250 isa_bus = ISA_BUS(qdev_get_child_bus(DEVICE(piix4), "isa.0")); 1251 1252 dev = DEVICE(object_resolve_path_component(OBJECT(piix4), "ide")); 1253 pci_ide_create_devs(PCI_DEVICE(dev)); 1254 1255 /* Interrupt controller */ 1256 qdev_connect_gpio_out_named(DEVICE(piix4), "intr", 0, i8259_irq); 1257 1258 /* generate SPD EEPROM data */ 1259 dev = DEVICE(object_resolve_path_component(OBJECT(piix4), "pm")); 1260 smbus = I2C_BUS(qdev_get_child_bus(dev, "i2c")); 1261 generate_eeprom_spd(&smbus_eeprom_buf[0 * 256], ram_size); 1262 generate_eeprom_serial(&smbus_eeprom_buf[6 * 256]); 1263 smbus_eeprom_init(smbus, 8, smbus_eeprom_buf, smbus_eeprom_size); 1264 g_free(smbus_eeprom_buf); 1265 1266 /* Super I/O: SMS FDC37M817 */ 1267 isa_create_simple(isa_bus, TYPE_FDC37M81X_SUPERIO); 1268 1269 /* Network card */ 1270 network_init(pci_bus); 1271 1272 /* Optional PCI video card */ 1273 pci_vga_init(pci_bus); 1274 } 1275 1276 static void mips_malta_instance_init(Object *obj) 1277 { 1278 MaltaState *s = MIPS_MALTA(obj); 1279 1280 s->cpuclk = qdev_init_clock_out(DEVICE(obj), "cpu-refclk"); 1281 clock_set_hz(s->cpuclk, 320000000); /* 320 MHz */ 1282 } 1283 1284 static const TypeInfo mips_malta_device = { 1285 .name = TYPE_MIPS_MALTA, 1286 .parent = TYPE_SYS_BUS_DEVICE, 1287 .instance_size = sizeof(MaltaState), 1288 .instance_init = mips_malta_instance_init, 1289 }; 1290 1291 GlobalProperty malta_compat[] = { 1292 { "PIIX4_PM", "memory-hotplug-support", "off" }, 1293 { "PIIX4_PM", "acpi-pci-hotplug-with-bridge-support", "off" }, 1294 { "PIIX4_PM", "acpi-root-pci-hotplug", "off" }, 1295 { "PIIX4_PM", "x-not-migrate-acpi-index", "true" }, 1296 }; 1297 const size_t malta_compat_len = G_N_ELEMENTS(malta_compat); 1298 1299 static void mips_malta_machine_init(MachineClass *mc) 1300 { 1301 mc->desc = "MIPS Malta Core LV"; 1302 mc->init = mips_malta_init; 1303 mc->block_default_type = IF_IDE; 1304 mc->max_cpus = 16; 1305 mc->is_default = true; 1306 #ifdef TARGET_MIPS64 1307 mc->default_cpu_type = MIPS_CPU_TYPE_NAME("20Kc"); 1308 #else 1309 mc->default_cpu_type = MIPS_CPU_TYPE_NAME("24Kf"); 1310 #endif 1311 mc->default_ram_id = "mips_malta.ram"; 1312 compat_props_add(mc->compat_props, malta_compat, malta_compat_len); 1313 } 1314 1315 DEFINE_MACHINE("malta", mips_malta_machine_init) 1316 1317 static void mips_malta_register_types(void) 1318 { 1319 type_register_static(&mips_malta_device); 1320 } 1321 1322 type_init(mips_malta_register_types) 1323