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-common.h" 28 #include "cpu.h" 29 #include "hw/southbridge/piix.h" 30 #include "hw/isa/superio.h" 31 #include "hw/char/serial.h" 32 #include "net/net.h" 33 #include "hw/boards.h" 34 #include "hw/i2c/smbus_eeprom.h" 35 #include "hw/block/flash.h" 36 #include "hw/mips/mips.h" 37 #include "hw/mips/cpudevs.h" 38 #include "hw/pci/pci.h" 39 #include "sysemu/sysemu.h" 40 #include "sysemu/arch_init.h" 41 #include "qemu/log.h" 42 #include "hw/mips/bios.h" 43 #include "hw/ide.h" 44 #include "hw/irq.h" 45 #include "hw/loader.h" 46 #include "elf.h" 47 #include "exec/address-spaces.h" 48 #include "qom/object.h" 49 #include "hw/sysbus.h" /* SysBusDevice */ 50 #include "qemu/host-utils.h" 51 #include "sysemu/qtest.h" 52 #include "sysemu/reset.h" 53 #include "sysemu/runstate.h" 54 #include "qapi/error.h" 55 #include "qemu/error-report.h" 56 #include "hw/misc/empty_slot.h" 57 #include "sysemu/kvm.h" 58 #include "hw/semihosting/semihost.h" 59 #include "hw/mips/cps.h" 60 61 #define ENVP_ADDR 0x80002000l 62 #define ENVP_NB_ENTRIES 16 63 #define ENVP_ENTRY_SIZE 256 64 65 /* Hardware addresses */ 66 #define FLASH_ADDRESS 0x1e000000ULL 67 #define FPGA_ADDRESS 0x1f000000ULL 68 #define RESET_ADDRESS 0x1fc00000ULL 69 70 #define FLASH_SIZE 0x400000 71 72 #define MAX_IDE_BUS 2 73 74 typedef struct { 75 MemoryRegion iomem; 76 MemoryRegion iomem_lo; /* 0 - 0x900 */ 77 MemoryRegion iomem_hi; /* 0xa00 - 0x100000 */ 78 uint32_t leds; 79 uint32_t brk; 80 uint32_t gpout; 81 uint32_t i2cin; 82 uint32_t i2coe; 83 uint32_t i2cout; 84 uint32_t i2csel; 85 CharBackend display; 86 char display_text[9]; 87 SerialMM *uart; 88 bool display_inited; 89 } MaltaFPGAState; 90 91 #define TYPE_MIPS_MALTA "mips-malta" 92 OBJECT_DECLARE_SIMPLE_TYPE(MaltaState, MIPS_MALTA) 93 94 struct MaltaState { 95 SysBusDevice parent_obj; 96 97 MIPSCPSState cps; 98 qemu_irq i8259[ISA_NUM_IRQS]; 99 }; 100 101 static struct _loaderparams { 102 int ram_size, ram_low_size; 103 const char *kernel_filename; 104 const char *kernel_cmdline; 105 const char *initrd_filename; 106 } loaderparams; 107 108 /* Malta FPGA */ 109 static void malta_fpga_update_display(void *opaque) 110 { 111 char leds_text[9]; 112 int i; 113 MaltaFPGAState *s = opaque; 114 115 for (i = 7 ; i >= 0 ; i--) { 116 if (s->leds & (1 << i)) { 117 leds_text[i] = '#'; 118 } else { 119 leds_text[i] = ' '; 120 } 121 } 122 leds_text[8] = '\0'; 123 124 qemu_chr_fe_printf(&s->display, "\e[H\n\n|\e[32m%-8.8s\e[00m|\r\n", 125 leds_text); 126 qemu_chr_fe_printf(&s->display, "\n\n\n\n|\e[31m%-8.8s\e[00m|", 127 s->display_text); 128 } 129 130 /* 131 * EEPROM 24C01 / 24C02 emulation. 132 * 133 * Emulation for serial EEPROMs: 134 * 24C01 - 1024 bit (128 x 8) 135 * 24C02 - 2048 bit (256 x 8) 136 * 137 * Typical device names include Microchip 24C02SC or SGS Thomson ST24C02. 138 */ 139 140 #if defined(DEBUG) 141 # define logout(fmt, ...) \ 142 fprintf(stderr, "MALTA\t%-24s" fmt, __func__, ## __VA_ARGS__) 143 #else 144 # define logout(fmt, ...) ((void)0) 145 #endif 146 147 struct _eeprom24c0x_t { 148 uint8_t tick; 149 uint8_t address; 150 uint8_t command; 151 uint8_t ack; 152 uint8_t scl; 153 uint8_t sda; 154 uint8_t data; 155 /* uint16_t size; */ 156 uint8_t contents[256]; 157 }; 158 159 typedef struct _eeprom24c0x_t eeprom24c0x_t; 160 161 static eeprom24c0x_t spd_eeprom = { 162 .contents = { 163 /* 00000000: */ 164 0x80, 0x08, 0xFF, 0x0D, 0x0A, 0xFF, 0x40, 0x00, 165 /* 00000008: */ 166 0x01, 0x75, 0x54, 0x00, 0x82, 0x08, 0x00, 0x01, 167 /* 00000010: */ 168 0x8F, 0x04, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 169 /* 00000018: */ 170 0x00, 0x00, 0x00, 0x14, 0x0F, 0x14, 0x2D, 0xFF, 171 /* 00000020: */ 172 0x15, 0x08, 0x15, 0x08, 0x00, 0x00, 0x00, 0x00, 173 /* 00000028: */ 174 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 175 /* 00000030: */ 176 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 177 /* 00000038: */ 178 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x12, 0xD0, 179 /* 00000040: */ 180 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 181 /* 00000048: */ 182 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 183 /* 00000050: */ 184 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 185 /* 00000058: */ 186 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 187 /* 00000060: */ 188 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 189 /* 00000068: */ 190 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 191 /* 00000070: */ 192 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 193 /* 00000078: */ 194 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x64, 0xF4, 195 }, 196 }; 197 198 static void generate_eeprom_spd(uint8_t *eeprom, ram_addr_t ram_size) 199 { 200 enum { SDR = 0x4, DDR2 = 0x8 } type; 201 uint8_t *spd = spd_eeprom.contents; 202 uint8_t nbanks = 0; 203 uint16_t density = 0; 204 int i; 205 206 /* work in terms of MB */ 207 ram_size /= MiB; 208 209 while ((ram_size >= 4) && (nbanks <= 2)) { 210 int sz_log2 = MIN(31 - clz32(ram_size), 14); 211 nbanks++; 212 density |= 1 << (sz_log2 - 2); 213 ram_size -= 1 << sz_log2; 214 } 215 216 /* split to 2 banks if possible */ 217 if ((nbanks == 1) && (density > 1)) { 218 nbanks++; 219 density >>= 1; 220 } 221 222 if (density & 0xff00) { 223 density = (density & 0xe0) | ((density >> 8) & 0x1f); 224 type = DDR2; 225 } else if (!(density & 0x1f)) { 226 type = DDR2; 227 } else { 228 type = SDR; 229 } 230 231 if (ram_size) { 232 warn_report("SPD cannot represent final " RAM_ADDR_FMT "MB" 233 " of SDRAM", ram_size); 234 } 235 236 /* fill in SPD memory information */ 237 spd[2] = type; 238 spd[5] = nbanks; 239 spd[31] = density; 240 241 /* checksum */ 242 spd[63] = 0; 243 for (i = 0; i < 63; i++) { 244 spd[63] += spd[i]; 245 } 246 247 /* copy for SMBUS */ 248 memcpy(eeprom, spd, sizeof(spd_eeprom.contents)); 249 } 250 251 static void generate_eeprom_serial(uint8_t *eeprom) 252 { 253 int i, pos = 0; 254 uint8_t mac[6] = { 0x00 }; 255 uint8_t sn[5] = { 0x01, 0x23, 0x45, 0x67, 0x89 }; 256 257 /* version */ 258 eeprom[pos++] = 0x01; 259 260 /* count */ 261 eeprom[pos++] = 0x02; 262 263 /* MAC address */ 264 eeprom[pos++] = 0x01; /* MAC */ 265 eeprom[pos++] = 0x06; /* length */ 266 memcpy(&eeprom[pos], mac, sizeof(mac)); 267 pos += sizeof(mac); 268 269 /* serial number */ 270 eeprom[pos++] = 0x02; /* serial */ 271 eeprom[pos++] = 0x05; /* length */ 272 memcpy(&eeprom[pos], sn, sizeof(sn)); 273 pos += sizeof(sn); 274 275 /* checksum */ 276 eeprom[pos] = 0; 277 for (i = 0; i < pos; i++) { 278 eeprom[pos] += eeprom[i]; 279 } 280 } 281 282 static uint8_t eeprom24c0x_read(eeprom24c0x_t *eeprom) 283 { 284 logout("%u: scl = %u, sda = %u, data = 0x%02x\n", 285 eeprom->tick, eeprom->scl, eeprom->sda, eeprom->data); 286 return eeprom->sda; 287 } 288 289 static void eeprom24c0x_write(eeprom24c0x_t *eeprom, int scl, int sda) 290 { 291 if (eeprom->scl && scl && (eeprom->sda != sda)) { 292 logout("%u: scl = %u->%u, sda = %u->%u i2c %s\n", 293 eeprom->tick, eeprom->scl, scl, eeprom->sda, sda, 294 sda ? "stop" : "start"); 295 if (!sda) { 296 eeprom->tick = 1; 297 eeprom->command = 0; 298 } 299 } else if (eeprom->tick == 0 && !eeprom->ack) { 300 /* Waiting for start. */ 301 logout("%u: scl = %u->%u, sda = %u->%u wait for i2c start\n", 302 eeprom->tick, eeprom->scl, scl, eeprom->sda, sda); 303 } else if (!eeprom->scl && scl) { 304 logout("%u: scl = %u->%u, sda = %u->%u trigger bit\n", 305 eeprom->tick, eeprom->scl, scl, eeprom->sda, sda); 306 if (eeprom->ack) { 307 logout("\ti2c ack bit = 0\n"); 308 sda = 0; 309 eeprom->ack = 0; 310 } else if (eeprom->sda == sda) { 311 uint8_t bit = (sda != 0); 312 logout("\ti2c bit = %d\n", bit); 313 if (eeprom->tick < 9) { 314 eeprom->command <<= 1; 315 eeprom->command += bit; 316 eeprom->tick++; 317 if (eeprom->tick == 9) { 318 logout("\tcommand 0x%04x, %s\n", eeprom->command, 319 bit ? "read" : "write"); 320 eeprom->ack = 1; 321 } 322 } else if (eeprom->tick < 17) { 323 if (eeprom->command & 1) { 324 sda = ((eeprom->data & 0x80) != 0); 325 } 326 eeprom->address <<= 1; 327 eeprom->address += bit; 328 eeprom->tick++; 329 eeprom->data <<= 1; 330 if (eeprom->tick == 17) { 331 eeprom->data = eeprom->contents[eeprom->address]; 332 logout("\taddress 0x%04x, data 0x%02x\n", 333 eeprom->address, eeprom->data); 334 eeprom->ack = 1; 335 eeprom->tick = 0; 336 } 337 } else if (eeprom->tick >= 17) { 338 sda = 0; 339 } 340 } else { 341 logout("\tsda changed with raising scl\n"); 342 } 343 } else { 344 logout("%u: scl = %u->%u, sda = %u->%u\n", eeprom->tick, eeprom->scl, 345 scl, eeprom->sda, sda); 346 } 347 eeprom->scl = scl; 348 eeprom->sda = sda; 349 } 350 351 static uint64_t malta_fpga_read(void *opaque, hwaddr addr, 352 unsigned size) 353 { 354 MaltaFPGAState *s = opaque; 355 uint32_t val = 0; 356 uint32_t saddr; 357 358 saddr = (addr & 0xfffff); 359 360 switch (saddr) { 361 362 /* SWITCH Register */ 363 case 0x00200: 364 val = 0x00000000; 365 break; 366 367 /* STATUS Register */ 368 case 0x00208: 369 #ifdef TARGET_WORDS_BIGENDIAN 370 val = 0x00000012; 371 #else 372 val = 0x00000010; 373 #endif 374 break; 375 376 /* JMPRS Register */ 377 case 0x00210: 378 val = 0x00; 379 break; 380 381 /* LEDBAR Register */ 382 case 0x00408: 383 val = s->leds; 384 break; 385 386 /* BRKRES Register */ 387 case 0x00508: 388 val = s->brk; 389 break; 390 391 /* UART Registers are handled directly by the serial device */ 392 393 /* GPOUT Register */ 394 case 0x00a00: 395 val = s->gpout; 396 break; 397 398 /* XXX: implement a real I2C controller */ 399 400 /* GPINP Register */ 401 case 0x00a08: 402 /* IN = OUT until a real I2C control is implemented */ 403 if (s->i2csel) { 404 val = s->i2cout; 405 } else { 406 val = 0x00; 407 } 408 break; 409 410 /* I2CINP Register */ 411 case 0x00b00: 412 val = ((s->i2cin & ~1) | eeprom24c0x_read(&spd_eeprom)); 413 break; 414 415 /* I2COE Register */ 416 case 0x00b08: 417 val = s->i2coe; 418 break; 419 420 /* I2COUT Register */ 421 case 0x00b10: 422 val = s->i2cout; 423 break; 424 425 /* I2CSEL Register */ 426 case 0x00b18: 427 val = s->i2csel; 428 break; 429 430 default: 431 qemu_log_mask(LOG_GUEST_ERROR, 432 "malta_fpga_read: Bad register addr 0x%"HWADDR_PRIX"\n", 433 addr); 434 break; 435 } 436 return val; 437 } 438 439 static void malta_fpga_write(void *opaque, hwaddr addr, 440 uint64_t val, unsigned size) 441 { 442 MaltaFPGAState *s = opaque; 443 uint32_t saddr; 444 445 saddr = (addr & 0xfffff); 446 447 switch (saddr) { 448 449 /* SWITCH Register */ 450 case 0x00200: 451 break; 452 453 /* JMPRS Register */ 454 case 0x00210: 455 break; 456 457 /* LEDBAR Register */ 458 case 0x00408: 459 s->leds = val & 0xff; 460 malta_fpga_update_display(s); 461 break; 462 463 /* ASCIIWORD Register */ 464 case 0x00410: 465 snprintf(s->display_text, 9, "%08X", (uint32_t)val); 466 malta_fpga_update_display(s); 467 break; 468 469 /* ASCIIPOS0 to ASCIIPOS7 Registers */ 470 case 0x00418: 471 case 0x00420: 472 case 0x00428: 473 case 0x00430: 474 case 0x00438: 475 case 0x00440: 476 case 0x00448: 477 case 0x00450: 478 s->display_text[(saddr - 0x00418) >> 3] = (char) val; 479 malta_fpga_update_display(s); 480 break; 481 482 /* SOFTRES Register */ 483 case 0x00500: 484 if (val == 0x42) { 485 qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); 486 } 487 break; 488 489 /* BRKRES Register */ 490 case 0x00508: 491 s->brk = val & 0xff; 492 break; 493 494 /* UART Registers are handled directly by the serial device */ 495 496 /* GPOUT Register */ 497 case 0x00a00: 498 s->gpout = val & 0xff; 499 break; 500 501 /* I2COE Register */ 502 case 0x00b08: 503 s->i2coe = val & 0x03; 504 break; 505 506 /* I2COUT Register */ 507 case 0x00b10: 508 eeprom24c0x_write(&spd_eeprom, val & 0x02, val & 0x01); 509 s->i2cout = val; 510 break; 511 512 /* I2CSEL Register */ 513 case 0x00b18: 514 s->i2csel = val & 0x01; 515 break; 516 517 default: 518 qemu_log_mask(LOG_GUEST_ERROR, 519 "malta_fpga_write: Bad register addr 0x%"HWADDR_PRIX"\n", 520 addr); 521 break; 522 } 523 } 524 525 static const MemoryRegionOps malta_fpga_ops = { 526 .read = malta_fpga_read, 527 .write = malta_fpga_write, 528 .endianness = DEVICE_NATIVE_ENDIAN, 529 }; 530 531 static void malta_fpga_reset(void *opaque) 532 { 533 MaltaFPGAState *s = opaque; 534 535 s->leds = 0x00; 536 s->brk = 0x0a; 537 s->gpout = 0x00; 538 s->i2cin = 0x3; 539 s->i2coe = 0x0; 540 s->i2cout = 0x3; 541 s->i2csel = 0x1; 542 543 s->display_text[8] = '\0'; 544 snprintf(s->display_text, 9, " "); 545 } 546 547 static void malta_fgpa_display_event(void *opaque, QEMUChrEvent event) 548 { 549 MaltaFPGAState *s = opaque; 550 551 if (event == CHR_EVENT_OPENED && !s->display_inited) { 552 qemu_chr_fe_printf(&s->display, "\e[HMalta LEDBAR\r\n"); 553 qemu_chr_fe_printf(&s->display, "+--------+\r\n"); 554 qemu_chr_fe_printf(&s->display, "+ +\r\n"); 555 qemu_chr_fe_printf(&s->display, "+--------+\r\n"); 556 qemu_chr_fe_printf(&s->display, "\n"); 557 qemu_chr_fe_printf(&s->display, "Malta ASCII\r\n"); 558 qemu_chr_fe_printf(&s->display, "+--------+\r\n"); 559 qemu_chr_fe_printf(&s->display, "+ +\r\n"); 560 qemu_chr_fe_printf(&s->display, "+--------+\r\n"); 561 s->display_inited = true; 562 } 563 } 564 565 static MaltaFPGAState *malta_fpga_init(MemoryRegion *address_space, 566 hwaddr base, qemu_irq uart_irq, Chardev *uart_chr) 567 { 568 MaltaFPGAState *s; 569 Chardev *chr; 570 571 s = g_new0(MaltaFPGAState, 1); 572 573 memory_region_init_io(&s->iomem, NULL, &malta_fpga_ops, s, 574 "malta-fpga", 0x100000); 575 memory_region_init_alias(&s->iomem_lo, NULL, "malta-fpga", 576 &s->iomem, 0, 0x900); 577 memory_region_init_alias(&s->iomem_hi, NULL, "malta-fpga", 578 &s->iomem, 0xa00, 0x10000 - 0xa00); 579 580 memory_region_add_subregion(address_space, base, &s->iomem_lo); 581 memory_region_add_subregion(address_space, base + 0xa00, &s->iomem_hi); 582 583 chr = qemu_chr_new("fpga", "vc:320x200", NULL); 584 qemu_chr_fe_init(&s->display, chr, NULL); 585 qemu_chr_fe_set_handlers(&s->display, NULL, NULL, 586 malta_fgpa_display_event, NULL, s, NULL, true); 587 588 s->uart = serial_mm_init(address_space, base + 0x900, 3, uart_irq, 589 230400, uart_chr, DEVICE_NATIVE_ENDIAN); 590 591 malta_fpga_reset(s); 592 qemu_register_reset(malta_fpga_reset, s); 593 594 return s; 595 } 596 597 /* Network support */ 598 static void network_init(PCIBus *pci_bus) 599 { 600 int i; 601 602 for (i = 0; i < nb_nics; i++) { 603 NICInfo *nd = &nd_table[i]; 604 const char *default_devaddr = NULL; 605 606 if (i == 0 && (!nd->model || strcmp(nd->model, "pcnet") == 0)) 607 /* The malta board has a PCNet card using PCI SLOT 11 */ 608 default_devaddr = "0b"; 609 610 pci_nic_init_nofail(nd, pci_bus, "pcnet", default_devaddr); 611 } 612 } 613 614 static void write_bootloader_nanomips(uint8_t *base, int64_t run_addr, 615 int64_t kernel_entry) 616 { 617 uint16_t *p; 618 619 /* Small bootloader */ 620 p = (uint16_t *)base; 621 622 #define NM_HI1(VAL) (((VAL) >> 16) & 0x1f) 623 #define NM_HI2(VAL) \ 624 (((VAL) & 0xf000) | (((VAL) >> 19) & 0xffc) | (((VAL) >> 31) & 0x1)) 625 #define NM_LO(VAL) ((VAL) & 0xfff) 626 627 stw_p(p++, 0x2800); stw_p(p++, 0x001c); 628 /* bc to_here */ 629 stw_p(p++, 0x8000); stw_p(p++, 0xc000); 630 /* nop */ 631 stw_p(p++, 0x8000); stw_p(p++, 0xc000); 632 /* nop */ 633 stw_p(p++, 0x8000); stw_p(p++, 0xc000); 634 /* nop */ 635 stw_p(p++, 0x8000); stw_p(p++, 0xc000); 636 /* nop */ 637 stw_p(p++, 0x8000); stw_p(p++, 0xc000); 638 /* nop */ 639 stw_p(p++, 0x8000); stw_p(p++, 0xc000); 640 /* nop */ 641 stw_p(p++, 0x8000); stw_p(p++, 0xc000); 642 /* nop */ 643 644 /* to_here: */ 645 if (semihosting_get_argc()) { 646 /* Preserve a0 content as arguments have been passed */ 647 stw_p(p++, 0x8000); stw_p(p++, 0xc000); 648 /* nop */ 649 } else { 650 stw_p(p++, 0x0080); stw_p(p++, 0x0002); 651 /* li a0,2 */ 652 } 653 654 stw_p(p++, 0xe3a0 | NM_HI1(ENVP_ADDR - 64)); 655 656 stw_p(p++, NM_HI2(ENVP_ADDR - 64)); 657 /* lui sp,%hi(ENVP_ADDR - 64) */ 658 659 stw_p(p++, 0x83bd); stw_p(p++, NM_LO(ENVP_ADDR - 64)); 660 /* ori sp,sp,%lo(ENVP_ADDR - 64) */ 661 662 stw_p(p++, 0xe0a0 | NM_HI1(ENVP_ADDR)); 663 664 stw_p(p++, NM_HI2(ENVP_ADDR)); 665 /* lui a1,%hi(ENVP_ADDR) */ 666 667 stw_p(p++, 0x80a5); stw_p(p++, NM_LO(ENVP_ADDR)); 668 /* ori a1,a1,%lo(ENVP_ADDR) */ 669 670 stw_p(p++, 0xe0c0 | NM_HI1(ENVP_ADDR + 8)); 671 672 stw_p(p++, NM_HI2(ENVP_ADDR + 8)); 673 /* lui a2,%hi(ENVP_ADDR + 8) */ 674 675 stw_p(p++, 0x80c6); stw_p(p++, NM_LO(ENVP_ADDR + 8)); 676 /* ori a2,a2,%lo(ENVP_ADDR + 8) */ 677 678 stw_p(p++, 0xe0e0 | NM_HI1(loaderparams.ram_low_size)); 679 680 stw_p(p++, NM_HI2(loaderparams.ram_low_size)); 681 /* lui a3,%hi(loaderparams.ram_low_size) */ 682 683 stw_p(p++, 0x80e7); stw_p(p++, NM_LO(loaderparams.ram_low_size)); 684 /* ori a3,a3,%lo(loaderparams.ram_low_size) */ 685 686 /* 687 * Load BAR registers as done by YAMON: 688 * 689 * - set up PCI0 I/O BARs from 0x18000000 to 0x181fffff 690 * - set up PCI0 MEM0 at 0x10000000, size 0x8000000 691 * - set up PCI0 MEM1 at 0x18200000, size 0xbe00000 692 * 693 */ 694 stw_p(p++, 0xe040); stw_p(p++, 0x0681); 695 /* lui t1, %hi(0xb4000000) */ 696 697 #ifdef TARGET_WORDS_BIGENDIAN 698 699 stw_p(p++, 0xe020); stw_p(p++, 0x0be1); 700 /* lui t0, %hi(0xdf000000) */ 701 702 /* 0x68 corresponds to GT_ISD (from hw/mips/gt64xxx_pci.c) */ 703 stw_p(p++, 0x8422); stw_p(p++, 0x9068); 704 /* sw t0, 0x68(t1) */ 705 706 stw_p(p++, 0xe040); stw_p(p++, 0x077d); 707 /* lui t1, %hi(0xbbe00000) */ 708 709 stw_p(p++, 0xe020); stw_p(p++, 0x0801); 710 /* lui t0, %hi(0xc0000000) */ 711 712 /* 0x48 corresponds to GT_PCI0IOLD */ 713 stw_p(p++, 0x8422); stw_p(p++, 0x9048); 714 /* sw t0, 0x48(t1) */ 715 716 stw_p(p++, 0xe020); stw_p(p++, 0x0800); 717 /* lui t0, %hi(0x40000000) */ 718 719 /* 0x50 corresponds to GT_PCI0IOHD */ 720 stw_p(p++, 0x8422); stw_p(p++, 0x9050); 721 /* sw t0, 0x50(t1) */ 722 723 stw_p(p++, 0xe020); stw_p(p++, 0x0001); 724 /* lui t0, %hi(0x80000000) */ 725 726 /* 0x58 corresponds to GT_PCI0M0LD */ 727 stw_p(p++, 0x8422); stw_p(p++, 0x9058); 728 /* sw t0, 0x58(t1) */ 729 730 stw_p(p++, 0xe020); stw_p(p++, 0x07e0); 731 /* lui t0, %hi(0x3f000000) */ 732 733 /* 0x60 corresponds to GT_PCI0M0HD */ 734 stw_p(p++, 0x8422); stw_p(p++, 0x9060); 735 /* sw t0, 0x60(t1) */ 736 737 stw_p(p++, 0xe020); stw_p(p++, 0x0821); 738 /* lui t0, %hi(0xc1000000) */ 739 740 /* 0x80 corresponds to GT_PCI0M1LD */ 741 stw_p(p++, 0x8422); stw_p(p++, 0x9080); 742 /* sw t0, 0x80(t1) */ 743 744 stw_p(p++, 0xe020); stw_p(p++, 0x0bc0); 745 /* lui t0, %hi(0x5e000000) */ 746 747 #else 748 749 stw_p(p++, 0x0020); stw_p(p++, 0x00df); 750 /* addiu[32] t0, $0, 0xdf */ 751 752 /* 0x68 corresponds to GT_ISD */ 753 stw_p(p++, 0x8422); stw_p(p++, 0x9068); 754 /* sw t0, 0x68(t1) */ 755 756 /* Use kseg2 remapped address 0x1be00000 */ 757 stw_p(p++, 0xe040); stw_p(p++, 0x077d); 758 /* lui t1, %hi(0xbbe00000) */ 759 760 stw_p(p++, 0x0020); stw_p(p++, 0x00c0); 761 /* addiu[32] t0, $0, 0xc0 */ 762 763 /* 0x48 corresponds to GT_PCI0IOLD */ 764 stw_p(p++, 0x8422); stw_p(p++, 0x9048); 765 /* sw t0, 0x48(t1) */ 766 767 stw_p(p++, 0x0020); stw_p(p++, 0x0040); 768 /* addiu[32] t0, $0, 0x40 */ 769 770 /* 0x50 corresponds to GT_PCI0IOHD */ 771 stw_p(p++, 0x8422); stw_p(p++, 0x9050); 772 /* sw t0, 0x50(t1) */ 773 774 stw_p(p++, 0x0020); stw_p(p++, 0x0080); 775 /* addiu[32] t0, $0, 0x80 */ 776 777 /* 0x58 corresponds to GT_PCI0M0LD */ 778 stw_p(p++, 0x8422); stw_p(p++, 0x9058); 779 /* sw t0, 0x58(t1) */ 780 781 stw_p(p++, 0x0020); stw_p(p++, 0x003f); 782 /* addiu[32] t0, $0, 0x3f */ 783 784 /* 0x60 corresponds to GT_PCI0M0HD */ 785 stw_p(p++, 0x8422); stw_p(p++, 0x9060); 786 /* sw t0, 0x60(t1) */ 787 788 stw_p(p++, 0x0020); stw_p(p++, 0x00c1); 789 /* addiu[32] t0, $0, 0xc1 */ 790 791 /* 0x80 corresponds to GT_PCI0M1LD */ 792 stw_p(p++, 0x8422); stw_p(p++, 0x9080); 793 /* sw t0, 0x80(t1) */ 794 795 stw_p(p++, 0x0020); stw_p(p++, 0x005e); 796 /* addiu[32] t0, $0, 0x5e */ 797 798 #endif 799 800 /* 0x88 corresponds to GT_PCI0M1HD */ 801 stw_p(p++, 0x8422); stw_p(p++, 0x9088); 802 /* sw t0, 0x88(t1) */ 803 804 stw_p(p++, 0xe320 | NM_HI1(kernel_entry)); 805 806 stw_p(p++, NM_HI2(kernel_entry)); 807 /* lui t9,%hi(kernel_entry) */ 808 809 stw_p(p++, 0x8339); stw_p(p++, NM_LO(kernel_entry)); 810 /* ori t9,t9,%lo(kernel_entry) */ 811 812 stw_p(p++, 0x4bf9); stw_p(p++, 0x0000); 813 /* jalrc t8 */ 814 } 815 816 /* 817 * ROM and pseudo bootloader 818 * 819 * The following code implements a very very simple bootloader. It first 820 * loads the registers a0 to a3 to the values expected by the OS, and 821 * then jump at the kernel address. 822 * 823 * The bootloader should pass the locations of the kernel arguments and 824 * environment variables tables. Those tables contain the 32-bit address 825 * of NULL terminated strings. The environment variables table should be 826 * terminated by a NULL address. 827 * 828 * For a simpler implementation, the number of kernel arguments is fixed 829 * to two (the name of the kernel and the command line), and the two 830 * tables are actually the same one. 831 * 832 * The registers a0 to a3 should contain the following values: 833 * a0 - number of kernel arguments 834 * a1 - 32-bit address of the kernel arguments table 835 * a2 - 32-bit address of the environment variables table 836 * a3 - RAM size in bytes 837 */ 838 static void write_bootloader(uint8_t *base, int64_t run_addr, 839 int64_t kernel_entry) 840 { 841 uint32_t *p; 842 843 /* Small bootloader */ 844 p = (uint32_t *)base; 845 846 stl_p(p++, 0x08000000 | /* j 0x1fc00580 */ 847 ((run_addr + 0x580) & 0x0fffffff) >> 2); 848 stl_p(p++, 0x00000000); /* nop */ 849 850 /* YAMON service vector */ 851 stl_p(base + 0x500, run_addr + 0x0580); /* start: */ 852 stl_p(base + 0x504, run_addr + 0x083c); /* print_count: */ 853 stl_p(base + 0x520, run_addr + 0x0580); /* start: */ 854 stl_p(base + 0x52c, run_addr + 0x0800); /* flush_cache: */ 855 stl_p(base + 0x534, run_addr + 0x0808); /* print: */ 856 stl_p(base + 0x538, run_addr + 0x0800); /* reg_cpu_isr: */ 857 stl_p(base + 0x53c, run_addr + 0x0800); /* unred_cpu_isr: */ 858 stl_p(base + 0x540, run_addr + 0x0800); /* reg_ic_isr: */ 859 stl_p(base + 0x544, run_addr + 0x0800); /* unred_ic_isr: */ 860 stl_p(base + 0x548, run_addr + 0x0800); /* reg_esr: */ 861 stl_p(base + 0x54c, run_addr + 0x0800); /* unreg_esr: */ 862 stl_p(base + 0x550, run_addr + 0x0800); /* getchar: */ 863 stl_p(base + 0x554, run_addr + 0x0800); /* syscon_read: */ 864 865 866 /* Second part of the bootloader */ 867 p = (uint32_t *) (base + 0x580); 868 869 if (semihosting_get_argc()) { 870 /* Preserve a0 content as arguments have been passed */ 871 stl_p(p++, 0x00000000); /* nop */ 872 } else { 873 stl_p(p++, 0x24040002); /* addiu a0, zero, 2 */ 874 } 875 876 /* lui sp, high(ENVP_ADDR) */ 877 stl_p(p++, 0x3c1d0000 | (((ENVP_ADDR - 64) >> 16) & 0xffff)); 878 /* ori sp, sp, low(ENVP_ADDR) */ 879 stl_p(p++, 0x37bd0000 | ((ENVP_ADDR - 64) & 0xffff)); 880 /* lui a1, high(ENVP_ADDR) */ 881 stl_p(p++, 0x3c050000 | ((ENVP_ADDR >> 16) & 0xffff)); 882 /* ori a1, a1, low(ENVP_ADDR) */ 883 stl_p(p++, 0x34a50000 | (ENVP_ADDR & 0xffff)); 884 /* lui a2, high(ENVP_ADDR + 8) */ 885 stl_p(p++, 0x3c060000 | (((ENVP_ADDR + 8) >> 16) & 0xffff)); 886 /* ori a2, a2, low(ENVP_ADDR + 8) */ 887 stl_p(p++, 0x34c60000 | ((ENVP_ADDR + 8) & 0xffff)); 888 /* lui a3, high(ram_low_size) */ 889 stl_p(p++, 0x3c070000 | (loaderparams.ram_low_size >> 16)); 890 /* ori a3, a3, low(ram_low_size) */ 891 stl_p(p++, 0x34e70000 | (loaderparams.ram_low_size & 0xffff)); 892 893 /* Load BAR registers as done by YAMON */ 894 stl_p(p++, 0x3c09b400); /* lui t1, 0xb400 */ 895 896 #ifdef TARGET_WORDS_BIGENDIAN 897 stl_p(p++, 0x3c08df00); /* lui t0, 0xdf00 */ 898 #else 899 stl_p(p++, 0x340800df); /* ori t0, r0, 0x00df */ 900 #endif 901 stl_p(p++, 0xad280068); /* sw t0, 0x0068(t1) */ 902 903 stl_p(p++, 0x3c09bbe0); /* lui t1, 0xbbe0 */ 904 905 #ifdef TARGET_WORDS_BIGENDIAN 906 stl_p(p++, 0x3c08c000); /* lui t0, 0xc000 */ 907 #else 908 stl_p(p++, 0x340800c0); /* ori t0, r0, 0x00c0 */ 909 #endif 910 stl_p(p++, 0xad280048); /* sw t0, 0x0048(t1) */ 911 #ifdef TARGET_WORDS_BIGENDIAN 912 stl_p(p++, 0x3c084000); /* lui t0, 0x4000 */ 913 #else 914 stl_p(p++, 0x34080040); /* ori t0, r0, 0x0040 */ 915 #endif 916 stl_p(p++, 0xad280050); /* sw t0, 0x0050(t1) */ 917 918 #ifdef TARGET_WORDS_BIGENDIAN 919 stl_p(p++, 0x3c088000); /* lui t0, 0x8000 */ 920 #else 921 stl_p(p++, 0x34080080); /* ori t0, r0, 0x0080 */ 922 #endif 923 stl_p(p++, 0xad280058); /* sw t0, 0x0058(t1) */ 924 #ifdef TARGET_WORDS_BIGENDIAN 925 stl_p(p++, 0x3c083f00); /* lui t0, 0x3f00 */ 926 #else 927 stl_p(p++, 0x3408003f); /* ori t0, r0, 0x003f */ 928 #endif 929 stl_p(p++, 0xad280060); /* sw t0, 0x0060(t1) */ 930 931 #ifdef TARGET_WORDS_BIGENDIAN 932 stl_p(p++, 0x3c08c100); /* lui t0, 0xc100 */ 933 #else 934 stl_p(p++, 0x340800c1); /* ori t0, r0, 0x00c1 */ 935 #endif 936 stl_p(p++, 0xad280080); /* sw t0, 0x0080(t1) */ 937 #ifdef TARGET_WORDS_BIGENDIAN 938 stl_p(p++, 0x3c085e00); /* lui t0, 0x5e00 */ 939 #else 940 stl_p(p++, 0x3408005e); /* ori t0, r0, 0x005e */ 941 #endif 942 stl_p(p++, 0xad280088); /* sw t0, 0x0088(t1) */ 943 944 /* Jump to kernel code */ 945 stl_p(p++, 0x3c1f0000 | 946 ((kernel_entry >> 16) & 0xffff)); /* lui ra, high(kernel_entry) */ 947 stl_p(p++, 0x37ff0000 | 948 (kernel_entry & 0xffff)); /* ori ra, ra, low(kernel_entry) */ 949 stl_p(p++, 0x03e00009); /* jalr ra */ 950 stl_p(p++, 0x00000000); /* nop */ 951 952 /* YAMON subroutines */ 953 p = (uint32_t *) (base + 0x800); 954 stl_p(p++, 0x03e00009); /* jalr ra */ 955 stl_p(p++, 0x24020000); /* li v0,0 */ 956 /* 808 YAMON print */ 957 stl_p(p++, 0x03e06821); /* move t5,ra */ 958 stl_p(p++, 0x00805821); /* move t3,a0 */ 959 stl_p(p++, 0x00a05021); /* move t2,a1 */ 960 stl_p(p++, 0x91440000); /* lbu a0,0(t2) */ 961 stl_p(p++, 0x254a0001); /* addiu t2,t2,1 */ 962 stl_p(p++, 0x10800005); /* beqz a0,834 */ 963 stl_p(p++, 0x00000000); /* nop */ 964 stl_p(p++, 0x0ff0021c); /* jal 870 */ 965 stl_p(p++, 0x00000000); /* nop */ 966 stl_p(p++, 0x1000fff9); /* b 814 */ 967 stl_p(p++, 0x00000000); /* nop */ 968 stl_p(p++, 0x01a00009); /* jalr t5 */ 969 stl_p(p++, 0x01602021); /* move a0,t3 */ 970 /* 0x83c YAMON print_count */ 971 stl_p(p++, 0x03e06821); /* move t5,ra */ 972 stl_p(p++, 0x00805821); /* move t3,a0 */ 973 stl_p(p++, 0x00a05021); /* move t2,a1 */ 974 stl_p(p++, 0x00c06021); /* move t4,a2 */ 975 stl_p(p++, 0x91440000); /* lbu a0,0(t2) */ 976 stl_p(p++, 0x0ff0021c); /* jal 870 */ 977 stl_p(p++, 0x00000000); /* nop */ 978 stl_p(p++, 0x254a0001); /* addiu t2,t2,1 */ 979 stl_p(p++, 0x258cffff); /* addiu t4,t4,-1 */ 980 stl_p(p++, 0x1580fffa); /* bnez t4,84c */ 981 stl_p(p++, 0x00000000); /* nop */ 982 stl_p(p++, 0x01a00009); /* jalr t5 */ 983 stl_p(p++, 0x01602021); /* move a0,t3 */ 984 /* 0x870 */ 985 stl_p(p++, 0x3c08b800); /* lui t0,0xb400 */ 986 stl_p(p++, 0x350803f8); /* ori t0,t0,0x3f8 */ 987 stl_p(p++, 0x91090005); /* lbu t1,5(t0) */ 988 stl_p(p++, 0x00000000); /* nop */ 989 stl_p(p++, 0x31290040); /* andi t1,t1,0x40 */ 990 stl_p(p++, 0x1120fffc); /* beqz t1,878 <outch+0x8> */ 991 stl_p(p++, 0x00000000); /* nop */ 992 stl_p(p++, 0x03e00009); /* jalr ra */ 993 stl_p(p++, 0xa1040000); /* sb a0,0(t0) */ 994 995 } 996 997 static void GCC_FMT_ATTR(3, 4) prom_set(uint32_t *prom_buf, int index, 998 const char *string, ...) 999 { 1000 va_list ap; 1001 int32_t table_addr; 1002 1003 if (index >= ENVP_NB_ENTRIES) { 1004 return; 1005 } 1006 1007 if (string == NULL) { 1008 prom_buf[index] = 0; 1009 return; 1010 } 1011 1012 table_addr = sizeof(int32_t) * ENVP_NB_ENTRIES + index * ENVP_ENTRY_SIZE; 1013 prom_buf[index] = tswap32(ENVP_ADDR + table_addr); 1014 1015 va_start(ap, string); 1016 vsnprintf((char *)prom_buf + table_addr, ENVP_ENTRY_SIZE, string, ap); 1017 va_end(ap); 1018 } 1019 1020 /* Kernel */ 1021 static int64_t load_kernel(void) 1022 { 1023 int64_t kernel_entry, kernel_high, initrd_size; 1024 long kernel_size; 1025 ram_addr_t initrd_offset; 1026 int big_endian; 1027 uint32_t *prom_buf; 1028 long prom_size; 1029 int prom_index = 0; 1030 uint64_t (*xlate_to_kseg0) (void *opaque, uint64_t addr); 1031 1032 #ifdef TARGET_WORDS_BIGENDIAN 1033 big_endian = 1; 1034 #else 1035 big_endian = 0; 1036 #endif 1037 1038 kernel_size = load_elf(loaderparams.kernel_filename, NULL, 1039 cpu_mips_kseg0_to_phys, NULL, 1040 (uint64_t *)&kernel_entry, NULL, 1041 (uint64_t *)&kernel_high, NULL, big_endian, EM_MIPS, 1042 1, 0); 1043 if (kernel_size < 0) { 1044 error_report("could not load kernel '%s': %s", 1045 loaderparams.kernel_filename, 1046 load_elf_strerror(kernel_size)); 1047 exit(1); 1048 } 1049 1050 /* Check where the kernel has been linked */ 1051 if (kernel_entry & 0x80000000ll) { 1052 if (kvm_enabled()) { 1053 error_report("KVM guest kernels must be linked in useg. " 1054 "Did you forget to enable CONFIG_KVM_GUEST?"); 1055 exit(1); 1056 } 1057 1058 xlate_to_kseg0 = cpu_mips_phys_to_kseg0; 1059 } else { 1060 /* if kernel entry is in useg it is probably a KVM T&E kernel */ 1061 mips_um_ksegs_enable(); 1062 1063 xlate_to_kseg0 = cpu_mips_kvm_um_phys_to_kseg0; 1064 } 1065 1066 /* load initrd */ 1067 initrd_size = 0; 1068 initrd_offset = 0; 1069 if (loaderparams.initrd_filename) { 1070 initrd_size = get_image_size(loaderparams.initrd_filename); 1071 if (initrd_size > 0) { 1072 /* 1073 * The kernel allocates the bootmap memory in the low memory after 1074 * the initrd. It takes at most 128kiB for 2GB RAM and 4kiB 1075 * pages. 1076 */ 1077 initrd_offset = (loaderparams.ram_low_size - initrd_size 1078 - (128 * KiB) 1079 - ~INITRD_PAGE_MASK) & INITRD_PAGE_MASK; 1080 if (kernel_high >= initrd_offset) { 1081 error_report("memory too small for initial ram disk '%s'", 1082 loaderparams.initrd_filename); 1083 exit(1); 1084 } 1085 initrd_size = load_image_targphys(loaderparams.initrd_filename, 1086 initrd_offset, 1087 ram_size - initrd_offset); 1088 } 1089 if (initrd_size == (target_ulong) -1) { 1090 error_report("could not load initial ram disk '%s'", 1091 loaderparams.initrd_filename); 1092 exit(1); 1093 } 1094 } 1095 1096 /* Setup prom parameters. */ 1097 prom_size = ENVP_NB_ENTRIES * (sizeof(int32_t) + ENVP_ENTRY_SIZE); 1098 prom_buf = g_malloc(prom_size); 1099 1100 prom_set(prom_buf, prom_index++, "%s", loaderparams.kernel_filename); 1101 if (initrd_size > 0) { 1102 prom_set(prom_buf, prom_index++, 1103 "rd_start=0x%" PRIx64 " rd_size=%" PRId64 " %s", 1104 xlate_to_kseg0(NULL, initrd_offset), 1105 initrd_size, loaderparams.kernel_cmdline); 1106 } else { 1107 prom_set(prom_buf, prom_index++, "%s", loaderparams.kernel_cmdline); 1108 } 1109 1110 prom_set(prom_buf, prom_index++, "memsize"); 1111 prom_set(prom_buf, prom_index++, "%u", loaderparams.ram_low_size); 1112 1113 prom_set(prom_buf, prom_index++, "ememsize"); 1114 prom_set(prom_buf, prom_index++, "%u", loaderparams.ram_size); 1115 1116 prom_set(prom_buf, prom_index++, "modetty0"); 1117 prom_set(prom_buf, prom_index++, "38400n8r"); 1118 prom_set(prom_buf, prom_index++, NULL); 1119 1120 rom_add_blob_fixed("prom", prom_buf, prom_size, 1121 cpu_mips_kseg0_to_phys(NULL, ENVP_ADDR)); 1122 1123 g_free(prom_buf); 1124 return kernel_entry; 1125 } 1126 1127 static void malta_mips_config(MIPSCPU *cpu) 1128 { 1129 MachineState *ms = MACHINE(qdev_get_machine()); 1130 unsigned int smp_cpus = ms->smp.cpus; 1131 CPUMIPSState *env = &cpu->env; 1132 CPUState *cs = CPU(cpu); 1133 1134 env->mvp->CP0_MVPConf0 |= ((smp_cpus - 1) << CP0MVPC0_PVPE) | 1135 ((smp_cpus * cs->nr_threads - 1) << CP0MVPC0_PTC); 1136 } 1137 1138 static void main_cpu_reset(void *opaque) 1139 { 1140 MIPSCPU *cpu = opaque; 1141 CPUMIPSState *env = &cpu->env; 1142 1143 cpu_reset(CPU(cpu)); 1144 1145 /* 1146 * The bootloader does not need to be rewritten as it is located in a 1147 * read only location. The kernel location and the arguments table 1148 * location does not change. 1149 */ 1150 if (loaderparams.kernel_filename) { 1151 env->CP0_Status &= ~(1 << CP0St_ERL); 1152 } 1153 1154 malta_mips_config(cpu); 1155 1156 if (kvm_enabled()) { 1157 /* Start running from the bootloader we wrote to end of RAM */ 1158 env->active_tc.PC = 0x40000000 + loaderparams.ram_low_size; 1159 } 1160 } 1161 1162 static void create_cpu_without_cps(MachineState *ms, 1163 qemu_irq *cbus_irq, qemu_irq *i8259_irq) 1164 { 1165 CPUMIPSState *env; 1166 MIPSCPU *cpu; 1167 int i; 1168 1169 for (i = 0; i < ms->smp.cpus; i++) { 1170 cpu = MIPS_CPU(cpu_create(ms->cpu_type)); 1171 1172 /* Init internal devices */ 1173 cpu_mips_irq_init_cpu(cpu); 1174 cpu_mips_clock_init(cpu); 1175 qemu_register_reset(main_cpu_reset, cpu); 1176 } 1177 1178 cpu = MIPS_CPU(first_cpu); 1179 env = &cpu->env; 1180 *i8259_irq = env->irq[2]; 1181 *cbus_irq = env->irq[4]; 1182 } 1183 1184 static void create_cps(MachineState *ms, MaltaState *s, 1185 qemu_irq *cbus_irq, qemu_irq *i8259_irq) 1186 { 1187 object_initialize_child(OBJECT(s), "cps", &s->cps, TYPE_MIPS_CPS); 1188 object_property_set_str(OBJECT(&s->cps), "cpu-type", ms->cpu_type, 1189 &error_fatal); 1190 object_property_set_int(OBJECT(&s->cps), "num-vp", ms->smp.cpus, 1191 &error_fatal); 1192 sysbus_realize(SYS_BUS_DEVICE(&s->cps), &error_fatal); 1193 1194 sysbus_mmio_map_overlap(SYS_BUS_DEVICE(&s->cps), 0, 0, 1); 1195 1196 *i8259_irq = get_cps_irq(&s->cps, 3); 1197 *cbus_irq = NULL; 1198 } 1199 1200 static void mips_create_cpu(MachineState *ms, MaltaState *s, 1201 qemu_irq *cbus_irq, qemu_irq *i8259_irq) 1202 { 1203 if ((ms->smp.cpus > 1) && cpu_supports_cps_smp(ms->cpu_type)) { 1204 create_cps(ms, s, cbus_irq, i8259_irq); 1205 } else { 1206 create_cpu_without_cps(ms, cbus_irq, i8259_irq); 1207 } 1208 } 1209 1210 static 1211 void mips_malta_init(MachineState *machine) 1212 { 1213 ram_addr_t ram_size = machine->ram_size; 1214 ram_addr_t ram_low_size; 1215 const char *kernel_filename = machine->kernel_filename; 1216 const char *kernel_cmdline = machine->kernel_cmdline; 1217 const char *initrd_filename = machine->initrd_filename; 1218 char *filename; 1219 PFlashCFI01 *fl; 1220 MemoryRegion *system_memory = get_system_memory(); 1221 MemoryRegion *ram_low_preio = g_new(MemoryRegion, 1); 1222 MemoryRegion *ram_low_postio; 1223 MemoryRegion *bios, *bios_copy = g_new(MemoryRegion, 1); 1224 const size_t smbus_eeprom_size = 8 * 256; 1225 uint8_t *smbus_eeprom_buf = g_malloc0(smbus_eeprom_size); 1226 int64_t kernel_entry, bootloader_run_addr; 1227 PCIBus *pci_bus; 1228 ISABus *isa_bus; 1229 qemu_irq cbus_irq, i8259_irq; 1230 I2CBus *smbus; 1231 DriveInfo *dinfo; 1232 int fl_idx = 0; 1233 int be; 1234 1235 DeviceState *dev = qdev_new(TYPE_MIPS_MALTA); 1236 MaltaState *s = MIPS_MALTA(dev); 1237 1238 /* 1239 * The whole address space decoded by the GT-64120A doesn't generate 1240 * exception when accessing invalid memory. Create an empty slot to 1241 * emulate this feature. 1242 */ 1243 empty_slot_init("GT64120", 0, 0x20000000); 1244 1245 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); 1246 1247 /* create CPU */ 1248 mips_create_cpu(machine, s, &cbus_irq, &i8259_irq); 1249 1250 /* allocate RAM */ 1251 if (ram_size > 2 * GiB) { 1252 error_report("Too much memory for this machine: %" PRId64 "MB," 1253 " maximum 2048MB", ram_size / MiB); 1254 exit(1); 1255 } 1256 1257 /* register RAM at high address where it is undisturbed by IO */ 1258 memory_region_add_subregion(system_memory, 0x80000000, machine->ram); 1259 1260 /* alias for pre IO hole access */ 1261 memory_region_init_alias(ram_low_preio, NULL, "mips_malta_low_preio.ram", 1262 machine->ram, 0, MIN(ram_size, 256 * MiB)); 1263 memory_region_add_subregion(system_memory, 0, ram_low_preio); 1264 1265 /* alias for post IO hole access, if there is enough RAM */ 1266 if (ram_size > 512 * MiB) { 1267 ram_low_postio = g_new(MemoryRegion, 1); 1268 memory_region_init_alias(ram_low_postio, NULL, 1269 "mips_malta_low_postio.ram", 1270 machine->ram, 512 * MiB, 1271 ram_size - 512 * MiB); 1272 memory_region_add_subregion(system_memory, 512 * MiB, 1273 ram_low_postio); 1274 } 1275 1276 #ifdef TARGET_WORDS_BIGENDIAN 1277 be = 1; 1278 #else 1279 be = 0; 1280 #endif 1281 1282 /* FPGA */ 1283 1284 /* The CBUS UART is attached to the MIPS CPU INT2 pin, ie interrupt 4 */ 1285 malta_fpga_init(system_memory, FPGA_ADDRESS, cbus_irq, serial_hd(2)); 1286 1287 /* Load firmware in flash / BIOS. */ 1288 dinfo = drive_get(IF_PFLASH, 0, fl_idx); 1289 fl = pflash_cfi01_register(FLASH_ADDRESS, "mips_malta.bios", 1290 FLASH_SIZE, 1291 dinfo ? blk_by_legacy_dinfo(dinfo) : NULL, 1292 65536, 1293 4, 0x0000, 0x0000, 0x0000, 0x0000, be); 1294 bios = pflash_cfi01_get_memory(fl); 1295 fl_idx++; 1296 if (kernel_filename) { 1297 ram_low_size = MIN(ram_size, 256 * MiB); 1298 /* For KVM we reserve 1MB of RAM for running bootloader */ 1299 if (kvm_enabled()) { 1300 ram_low_size -= 0x100000; 1301 bootloader_run_addr = 0x40000000 + ram_low_size; 1302 } else { 1303 bootloader_run_addr = 0xbfc00000; 1304 } 1305 1306 /* Write a small bootloader to the flash location. */ 1307 loaderparams.ram_size = ram_size; 1308 loaderparams.ram_low_size = ram_low_size; 1309 loaderparams.kernel_filename = kernel_filename; 1310 loaderparams.kernel_cmdline = kernel_cmdline; 1311 loaderparams.initrd_filename = initrd_filename; 1312 kernel_entry = load_kernel(); 1313 1314 if (!cpu_supports_isa(machine->cpu_type, ISA_NANOMIPS32)) { 1315 write_bootloader(memory_region_get_ram_ptr(bios), 1316 bootloader_run_addr, kernel_entry); 1317 } else { 1318 write_bootloader_nanomips(memory_region_get_ram_ptr(bios), 1319 bootloader_run_addr, kernel_entry); 1320 } 1321 if (kvm_enabled()) { 1322 /* Write the bootloader code @ the end of RAM, 1MB reserved */ 1323 write_bootloader(memory_region_get_ram_ptr(ram_low_preio) + 1324 ram_low_size, 1325 bootloader_run_addr, kernel_entry); 1326 } 1327 } else { 1328 target_long bios_size = FLASH_SIZE; 1329 /* The flash region isn't executable from a KVM guest */ 1330 if (kvm_enabled()) { 1331 error_report("KVM enabled but no -kernel argument was specified. " 1332 "Booting from flash is not supported with KVM."); 1333 exit(1); 1334 } 1335 /* Load firmware from flash. */ 1336 if (!dinfo) { 1337 /* Load a BIOS image. */ 1338 if (bios_name == NULL) { 1339 bios_name = BIOS_FILENAME; 1340 } 1341 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); 1342 if (filename) { 1343 bios_size = load_image_targphys(filename, FLASH_ADDRESS, 1344 BIOS_SIZE); 1345 g_free(filename); 1346 } else { 1347 bios_size = -1; 1348 } 1349 if ((bios_size < 0 || bios_size > BIOS_SIZE) && 1350 !kernel_filename && !qtest_enabled()) { 1351 error_report("Could not load MIPS bios '%s', and no " 1352 "-kernel argument was specified", bios_name); 1353 exit(1); 1354 } 1355 } 1356 /* 1357 * In little endian mode the 32bit words in the bios are swapped, 1358 * a neat trick which allows bi-endian firmware. 1359 */ 1360 #ifndef TARGET_WORDS_BIGENDIAN 1361 { 1362 uint32_t *end, *addr; 1363 const size_t swapsize = MIN(bios_size, 0x3e0000); 1364 addr = rom_ptr(FLASH_ADDRESS, swapsize); 1365 if (!addr) { 1366 addr = memory_region_get_ram_ptr(bios); 1367 } 1368 end = (void *)addr + swapsize; 1369 while (addr < end) { 1370 bswap32s(addr); 1371 addr++; 1372 } 1373 } 1374 #endif 1375 } 1376 1377 /* 1378 * Map the BIOS at a 2nd physical location, as on the real board. 1379 * Copy it so that we can patch in the MIPS revision, which cannot be 1380 * handled by an overlapping region as the resulting ROM code subpage 1381 * regions are not executable. 1382 */ 1383 memory_region_init_ram(bios_copy, NULL, "bios.1fc", BIOS_SIZE, 1384 &error_fatal); 1385 if (!rom_copy(memory_region_get_ram_ptr(bios_copy), 1386 FLASH_ADDRESS, BIOS_SIZE)) { 1387 memcpy(memory_region_get_ram_ptr(bios_copy), 1388 memory_region_get_ram_ptr(bios), BIOS_SIZE); 1389 } 1390 memory_region_set_readonly(bios_copy, true); 1391 memory_region_add_subregion(system_memory, RESET_ADDRESS, bios_copy); 1392 1393 /* Board ID = 0x420 (Malta Board with CoreLV) */ 1394 stl_p(memory_region_get_ram_ptr(bios_copy) + 0x10, 0x00000420); 1395 1396 /* Northbridge */ 1397 pci_bus = gt64120_register(s->i8259); 1398 1399 /* Southbridge */ 1400 dev = piix4_create(pci_bus, &isa_bus, &smbus); 1401 1402 /* Interrupt controller */ 1403 qdev_connect_gpio_out_named(dev, "intr", 0, i8259_irq); 1404 for (int i = 0; i < ISA_NUM_IRQS; i++) { 1405 s->i8259[i] = qdev_get_gpio_in_named(dev, "isa", i); 1406 } 1407 1408 /* generate SPD EEPROM data */ 1409 generate_eeprom_spd(&smbus_eeprom_buf[0 * 256], ram_size); 1410 generate_eeprom_serial(&smbus_eeprom_buf[6 * 256]); 1411 smbus_eeprom_init(smbus, 8, smbus_eeprom_buf, smbus_eeprom_size); 1412 g_free(smbus_eeprom_buf); 1413 1414 /* Super I/O: SMS FDC37M817 */ 1415 isa_create_simple(isa_bus, TYPE_FDC37M81X_SUPERIO); 1416 1417 /* Network card */ 1418 network_init(pci_bus); 1419 1420 /* Optional PCI video card */ 1421 pci_vga_init(pci_bus); 1422 } 1423 1424 static const TypeInfo mips_malta_device = { 1425 .name = TYPE_MIPS_MALTA, 1426 .parent = TYPE_SYS_BUS_DEVICE, 1427 .instance_size = sizeof(MaltaState), 1428 }; 1429 1430 static void mips_malta_machine_init(MachineClass *mc) 1431 { 1432 mc->desc = "MIPS Malta Core LV"; 1433 mc->init = mips_malta_init; 1434 mc->block_default_type = IF_IDE; 1435 mc->max_cpus = 16; 1436 mc->is_default = true; 1437 #ifdef TARGET_MIPS64 1438 mc->default_cpu_type = MIPS_CPU_TYPE_NAME("20Kc"); 1439 #else 1440 mc->default_cpu_type = MIPS_CPU_TYPE_NAME("24Kf"); 1441 #endif 1442 mc->default_ram_id = "mips_malta.ram"; 1443 } 1444 1445 DEFINE_MACHINE("malta", mips_malta_machine_init) 1446 1447 static void mips_malta_register_types(void) 1448 { 1449 type_register_static(&mips_malta_device); 1450 } 1451 1452 type_init(mips_malta_register_types) 1453