Locore.c revision 1.13.6.2
1 /* $NetBSD: Locore.c,v 1.13.6.2 2015/12/27 12:09:43 skrll Exp $ */ 2 3 /* 4 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 5 * Copyright (C) 1995, 1996 TooLs GmbH. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by TooLs GmbH. 19 * 4. The name of TooLs GmbH may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 27 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 28 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 30 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 31 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include <lib/libsa/stand.h> 35 #include "openfirm.h" 36 37 #include <machine/cpu.h> 38 39 /* 40 * We are trying to boot a sparc v9 cpu, so openfirmware has to be 64bit, 41 * and the kernel we load will be dealing with 64bits too (even if it is 42 * a 32bit kernel. 43 * Make sure we picked up the right defines: 44 */ 45 __CTASSERT(sizeof(cell_t)==8); 46 __CTASSERT(sizeof(paddr_t)==8); 47 48 extern int openfirmware(void *); 49 50 51 __dead void 52 _rtt(void) 53 { 54 55 OF_exit(); 56 } 57 58 void __attribute__((__noreturn__)) 59 OF_exit(void) 60 { 61 struct { 62 cell_t name; 63 cell_t nargs; 64 cell_t nreturns; 65 } args; 66 67 args.name = ADR2CELL("exit"); 68 args.nargs = 0; 69 args.nreturns = 0; 70 openfirmware(&args); 71 72 printf("OF_exit failed"); 73 for (;;) 74 continue; 75 } 76 77 void 78 OF_enter(void) 79 { 80 struct { 81 cell_t name; 82 cell_t nargs; 83 cell_t nreturns; 84 } args; 85 86 args.name = ADR2CELL("enter"); 87 args.nargs = 0; 88 args.nreturns = 0; 89 openfirmware(&args); 90 } 91 92 int 93 OF_finddevice(const char *name) 94 { 95 struct { 96 cell_t name; 97 cell_t nargs; 98 cell_t nreturns; 99 cell_t device; 100 cell_t phandle; 101 } args; 102 103 args.name = ADR2CELL("finddevice"); 104 args.nargs = 1; 105 args.nreturns = 1; 106 args.device = ADR2CELL(name); 107 if (openfirmware(&args) == -1) 108 return -1; 109 return args.phandle; 110 } 111 112 int 113 OF_instance_to_package(int ihandle) 114 { 115 struct { 116 cell_t name; 117 cell_t nargs; 118 cell_t nreturns; 119 cell_t ihandle; 120 cell_t phandle; 121 } args; 122 123 args.name = ADR2CELL("instance-to-package"); 124 args.nargs = 1; 125 args.nreturns = 1; 126 args.ihandle = HDL2CELL(ihandle); 127 if (openfirmware(&args) == -1) 128 return -1; 129 return args.phandle; 130 } 131 132 int 133 OF_instance_to_path(int ihandle, char *buf, int buflen) 134 { 135 struct { 136 cell_t name; 137 cell_t nargs; 138 cell_t nreturns; 139 cell_t ihandle; 140 cell_t buf; 141 cell_t buflen; 142 cell_t length; 143 } args; 144 145 args.name = ADR2CELL("instance-to-path"); 146 args.nargs = 3; 147 args.nreturns = 1; 148 args.ihandle = HDL2CELL(ihandle); 149 args.buf = ADR2CELL(buf); 150 args.buflen = buflen; 151 if (openfirmware(&args) < 0) 152 return -1; 153 return args.length; 154 } 155 156 int 157 OF_getprop(int handle, const char *prop, void *buf, int buflen) 158 { 159 struct { 160 cell_t name; 161 cell_t nargs; 162 cell_t nreturns; 163 cell_t phandle; 164 cell_t prop; 165 cell_t buf; 166 cell_t buflen; 167 cell_t size; 168 } args; 169 170 args.name = ADR2CELL("getprop"); 171 args.nargs = 4; 172 args.nreturns = 1; 173 args.phandle = HDL2CELL(handle); 174 args.prop = ADR2CELL(prop); 175 args.buf = ADR2CELL(buf); 176 args.buflen = buflen; 177 if (openfirmware(&args) == -1) 178 return -1; 179 return args.size; 180 } 181 182 #ifdef __notyet__ /* Has a bug on FirePower */ 183 int 184 OF_setprop(u_int handle, char *prop, void *buf, int len) 185 { 186 struct { 187 cell_t name; 188 cell_t nargs; 189 cell_t nreturns; 190 cell_t phandle; 191 cell_t prop; 192 cell_t buf; 193 cell_t len; 194 cell_t size; 195 } args; 196 197 args.name = ADR2CELL("setprop"); 198 args.nargs = 4; 199 args.nreturns = 1; 200 args.phandle = HDL2CELL(handle); 201 args.prop = ADR2CELL(prop); 202 args.buf = ADR2CELL(buf); 203 args.len = len; 204 if (openfirmware(&args) == -1) 205 return -1; 206 return args.size; 207 } 208 #endif 209 210 int 211 OF_open(const char *dname) 212 { 213 struct { 214 cell_t name; 215 cell_t nargs; 216 cell_t nreturns; 217 cell_t dname; 218 cell_t handle; 219 } args; 220 221 args.name = ADR2CELL("open"); 222 args.nargs = 1; 223 args.nreturns = 1; 224 args.dname = ADR2CELL(dname); 225 if (openfirmware(&args) == -1 || 226 args.handle == 0) 227 return -1; 228 return args.handle; 229 } 230 231 void 232 OF_close(int handle) 233 { 234 struct { 235 cell_t name; 236 cell_t nargs; 237 cell_t nreturns; 238 cell_t handle; 239 } args; 240 241 args.name = ADR2CELL("close"); 242 args.nargs = 1; 243 args.nreturns = 0; 244 args.handle = HDL2CELL(handle); 245 openfirmware(&args); 246 } 247 248 int 249 OF_write(int handle, const void *addr, int len) 250 { 251 struct { 252 cell_t name; 253 cell_t nargs; 254 cell_t nreturns; 255 cell_t ihandle; 256 cell_t addr; 257 cell_t len; 258 cell_t actual; 259 } args; 260 261 args.name = ADR2CELL("write"); 262 args.nargs = 3; 263 args.nreturns = 1; 264 args.ihandle = HDL2CELL(handle); 265 args.addr = ADR2CELL(addr); 266 args.len = len; 267 if (openfirmware(&args) == -1) 268 return -1; 269 return args.actual; 270 } 271 272 int 273 OF_read(int handle, void *addr, int len) 274 { 275 struct { 276 cell_t name; 277 cell_t nargs; 278 cell_t nreturns; 279 cell_t ihandle; 280 cell_t addr; 281 cell_t len; 282 cell_t actual; 283 } args; 284 285 args.name = ADR2CELL("read"); 286 args.nargs = 3; 287 args.nreturns = 1; 288 args.ihandle = HDL2CELL(handle); 289 args.addr = ADR2CELL(addr); 290 args.len = len; 291 if (openfirmware(&args) == -1) { 292 return -1; 293 } 294 return args.actual; 295 } 296 297 int 298 OF_seek(int handle, u_quad_t pos) 299 { 300 struct { 301 cell_t name; 302 cell_t nargs; 303 cell_t nreturns; 304 cell_t handle; 305 cell_t poshi; 306 cell_t poslo; 307 cell_t status; 308 } args; 309 310 args.name = ADR2CELL("seek"); 311 args.nargs = 3; 312 args.nreturns = 1; 313 args.handle = HDL2CELL(handle); 314 args.poshi = HDQ2CELL_HI(pos); 315 args.poslo = HDQ2CELL_LO(pos); 316 if (openfirmware(&args) == -1) { 317 return -1; 318 } 319 return args.status; 320 } 321 322 void 323 OF_release(void *virt, u_int size) 324 { 325 struct { 326 cell_t name; 327 cell_t nargs; 328 cell_t nreturns; 329 cell_t virt; 330 cell_t size; 331 } args; 332 333 args.name = ADR2CELL("release"); 334 args.nargs = 2; 335 args.nreturns = 0; 336 args.virt = ADR2CELL(virt); 337 args.size = size; 338 openfirmware(&args); 339 } 340 341 int 342 OF_milliseconds(void) 343 { 344 struct { 345 cell_t name; 346 cell_t nargs; 347 cell_t nreturns; 348 cell_t ms; 349 } args; 350 351 args.name = ADR2CELL("milliseconds"); 352 args.nargs = 0; 353 args.nreturns = 1; 354 openfirmware(&args); 355 return args.ms; 356 } 357 358 int 359 OF_peer(int phandle) 360 { 361 struct { 362 cell_t name; 363 cell_t nargs; 364 cell_t nreturns; 365 cell_t phandle; 366 cell_t sibling; 367 } args; 368 369 args.name = ADR2CELL("peer"); 370 args.nargs = 1; 371 args.nreturns = 1; 372 args.phandle = HDL2CELL(phandle); 373 if (openfirmware(&args) == -1) 374 return 0; 375 return args.sibling; 376 } 377 378 int 379 OF_child(int phandle) 380 { 381 struct { 382 cell_t name; 383 cell_t nargs; 384 cell_t nreturns; 385 cell_t phandle; 386 cell_t child; 387 } args; 388 389 args.name = ADR2CELL("child"); 390 args.nargs = 1; 391 args.nreturns = 1; 392 args.phandle = HDL2CELL(phandle); 393 if (openfirmware(&args) == -1) 394 return 0; 395 return args.child; 396 } 397 398 static u_int mmuh = -1; 399 static u_int memh = -1; 400 401 void 402 OF_initialize(void) 403 { 404 u_int chosen; 405 406 if ( (chosen = OF_finddevice("/chosen")) == -1) { 407 OF_exit(); 408 } 409 if (OF_getprop(chosen, "mmu", &mmuh, sizeof(mmuh)) != sizeof(mmuh) 410 || OF_getprop(chosen, "memory", &memh, sizeof(memh)) != sizeof(memh)) 411 OF_exit(); 412 } 413 414 /* 415 * The following need either the handle to memory or the handle to the MMU. 416 */ 417 418 /* 419 * Grab some address space from the prom 420 * 421 * Only works while the prom is actively mapping us. 422 */ 423 vaddr_t 424 OF_claim_virt(vaddr_t vaddr, int len) 425 { 426 struct { 427 cell_t name; 428 cell_t nargs; 429 cell_t nreturns; 430 cell_t method; 431 cell_t ihandle; 432 cell_t align; 433 cell_t len; 434 cell_t vaddr; 435 cell_t status; 436 cell_t retaddr; 437 } args; 438 439 #ifdef __notyet 440 if (mmuh == -1 && ((mmuh = get_mmu_handle()) == -1)) { 441 OF_printf("OF_claim_virt: cannot get mmuh\r\n"); 442 return -1LL; 443 } 444 #endif 445 args.name = ADR2CELL("call-method"); 446 args.nargs = 5; 447 args.nreturns = 2; 448 args.method = ADR2CELL("claim"); 449 args.ihandle = HDL2CELL(mmuh); 450 args.align = 0; 451 args.len = len; 452 args.vaddr = ADR2CELL(vaddr); 453 if (openfirmware(&args) != 0) 454 return -1LL; 455 return (vaddr_t)args.retaddr; 456 } 457 458 /* 459 * Request some address space from the prom 460 * 461 * Only works while the prom is actively mapping us. 462 */ 463 vaddr_t 464 OF_alloc_virt(int len, int align) 465 { 466 int retaddr=-1; 467 struct { 468 cell_t name; 469 cell_t nargs; 470 cell_t nreturns; 471 cell_t method; 472 cell_t ihandle; 473 cell_t align; 474 cell_t len; 475 cell_t status; 476 cell_t retaddr; 477 } args; 478 479 #ifdef __notyet 480 if (mmuh == -1 && ((mmuh = get_mmu_handle()) == -1)) { 481 OF_printf("OF_alloc_virt: cannot get mmuh\r\n"); 482 return -1LL; 483 } 484 #endif 485 args.name = ADR2CELL("call-method"); 486 args.nargs = 4; 487 args.nreturns = 2; 488 args.method = ADR2CELL("claim"); 489 args.ihandle = HDL2CELL(mmuh); 490 args.align = align; 491 args.len = len; 492 args.retaddr = ADR2CELL(&retaddr); 493 if (openfirmware(&args) != 0) 494 return -1LL; 495 return (vaddr_t)args.retaddr; 496 } 497 498 /* 499 * Release some address space to the prom 500 * 501 * Only works while the prom is actively mapping us. 502 */ 503 int 504 OF_free_virt(vaddr_t vaddr, int len) 505 { 506 struct { 507 cell_t name; 508 cell_t nargs; 509 cell_t nreturns; 510 cell_t method; 511 cell_t ihandle; 512 cell_t len; 513 cell_t vaddr; 514 } args; 515 516 #ifdef __notyet 517 if (mmuh == -1 && ((mmuh = get_mmu_handle()) == -1)) { 518 OF_printf("OF_claim_virt: cannot get mmuh\r\n"); 519 return -1; 520 } 521 #endif 522 args.name = ADR2CELL("call-method"); 523 args.nargs = 4; 524 args.nreturns = 0; 525 args.method = ADR2CELL("release"); 526 args.ihandle = HDL2CELL(mmuh); 527 args.vaddr = ADR2CELL(vaddr); 528 args.len = len; 529 return openfirmware(&args); 530 } 531 532 533 /* 534 * Unmap some address space 535 * 536 * Only works while the prom is actively mapping us. 537 */ 538 int 539 OF_unmap_virt(vaddr_t vaddr, int len) 540 { 541 struct { 542 cell_t name; 543 cell_t nargs; 544 cell_t nreturns; 545 cell_t method; 546 cell_t ihandle; 547 cell_t len; 548 cell_t vaddr; 549 } args; 550 551 #ifdef __notyet 552 if (mmuh == -1 && ((mmuh = get_mmu_handle()) == -1)) { 553 OF_printf("OF_claim_virt: cannot get mmuh\r\n"); 554 return -1; 555 } 556 #endif 557 args.name = ADR2CELL("call-method"); 558 args.nargs = 4; 559 args.nreturns = 0; 560 args.method = ADR2CELL("unmap"); 561 args.ihandle = HDL2CELL(mmuh); 562 args.vaddr = ADR2CELL(vaddr); 563 args.len = len; 564 return openfirmware(&args); 565 } 566 567 /* 568 * Have prom map in some memory 569 * 570 * Only works while the prom is actively mapping us. 571 */ 572 vaddr_t 573 OF_map_phys(paddr_t paddr, off_t size, vaddr_t vaddr, int mode) 574 { 575 struct { 576 cell_t name; 577 cell_t nargs; 578 cell_t nreturns; 579 cell_t method; 580 cell_t ihandle; 581 cell_t mode; 582 cell_t size; 583 cell_t vaddr; 584 cell_t paddr_hi; 585 cell_t paddr_lo; 586 cell_t status; 587 cell_t retaddr; 588 } args; 589 590 #ifdef __notyet 591 if (mmuh == -1 && ((mmuh = get_mmu_handle()) == -1)) { 592 OF_printf("OF_map_phys: cannot get mmuh\r\n"); 593 return 0LL; 594 } 595 #endif 596 args.name = ADR2CELL("call-method"); 597 args.nargs = 7; 598 args.nreturns = 1; 599 args.method = ADR2CELL("map"); 600 args.ihandle = HDL2CELL(mmuh); 601 args.mode = mode; 602 args.size = size; 603 args.vaddr = ADR2CELL(vaddr); 604 args.paddr_hi = HDQ2CELL_HI(paddr); 605 args.paddr_lo = HDQ2CELL_LO(paddr); 606 607 if (openfirmware(&args) == -1) 608 return -1; 609 if (args.status) 610 return -1; 611 return (vaddr_t)args.retaddr; 612 } 613 614 615 /* 616 * Request some RAM from the prom 617 * 618 * Only works while the prom is actively mapping us. 619 */ 620 paddr_t 621 OF_alloc_phys(int len, int align) 622 { 623 struct { 624 cell_t name; 625 cell_t nargs; 626 cell_t nreturns; 627 cell_t method; 628 cell_t ihandle; 629 cell_t align; 630 cell_t len; 631 cell_t status; 632 cell_t phys_hi; 633 cell_t phys_lo; 634 } args; 635 636 #ifdef __notyet 637 if (memh == -1 && ((memh = get_memory_handle()) == -1)) { 638 OF_printf("OF_alloc_phys: cannot get memh\r\n"); 639 return -1LL; 640 } 641 #endif 642 args.name = ADR2CELL("call-method"); 643 args.nargs = 4; 644 args.nreturns = 3; 645 args.method = ADR2CELL("claim"); 646 args.ihandle = HDL2CELL(memh); 647 args.align = align; 648 args.len = len; 649 if (openfirmware(&args) != 0) 650 return -1LL; 651 return (paddr_t)CELL2HDQ(args.phys_hi, args.phys_lo); 652 } 653 654 /* 655 * Request some specific RAM from the prom 656 * 657 * Only works while the prom is actively mapping us. 658 */ 659 paddr_t 660 OF_claim_phys(paddr_t phys, int len) 661 { 662 struct { 663 cell_t name; 664 cell_t nargs; 665 cell_t nreturns; 666 cell_t method; 667 cell_t ihandle; 668 cell_t align; 669 cell_t len; 670 cell_t phys_hi; 671 cell_t phys_lo; 672 cell_t status; 673 cell_t res; 674 cell_t rphys_hi; 675 cell_t rphys_lo; 676 } args; 677 678 #ifdef __notyet 679 if (memh == -1 && ((memh = get_memory_handle()) == -1)) { 680 OF_printf("OF_alloc_phys: cannot get memh\r\n"); 681 return 0LL; 682 } 683 #endif 684 args.name = ADR2CELL("call-method"); 685 args.nargs = 6; 686 args.nreturns = 4; 687 args.method = ADR2CELL("claim"); 688 args.ihandle = HDL2CELL(memh); 689 args.align = 0; 690 args.len = len; 691 args.phys_hi = HDQ2CELL_HI(phys); 692 args.phys_lo = HDQ2CELL_LO(phys); 693 if (openfirmware(&args) != 0) 694 return 0LL; 695 return (paddr_t)CELL2HDQ(args.rphys_hi, args.rphys_lo); 696 } 697 698 /* 699 * Free some RAM to prom 700 * 701 * Only works while the prom is actively mapping us. 702 */ 703 int 704 OF_free_phys(paddr_t phys, int len) 705 { 706 struct { 707 cell_t name; 708 cell_t nargs; 709 cell_t nreturns; 710 cell_t method; 711 cell_t ihandle; 712 cell_t len; 713 cell_t phys_hi; 714 cell_t phys_lo; 715 } args; 716 717 #ifdef __notyet 718 if (memh == -1 && ((memh = get_memory_handle()) == -1)) { 719 OF_printf("OF_free_phys: cannot get memh\r\n"); 720 return -1; 721 } 722 #endif 723 args.name = ADR2CELL("call-method"); 724 args.nargs = 5; 725 args.nreturns = 0; 726 args.method = ADR2CELL("release"); 727 args.ihandle = HDL2CELL(memh); 728 args.len = len; 729 args.phys_hi = HDQ2CELL_HI(phys); 730 args.phys_lo = HDQ2CELL_LO(phys); 731 return openfirmware(&args); 732 } 733 734 735 /* 736 * Claim virtual memory -- does not map it in. 737 */ 738 739 void * 740 OF_claim(void *virt, u_int size, u_int align) 741 { 742 #define SUNVMOF 743 #ifndef SUNVMOF 744 struct { 745 cell_t name; 746 cell_t nargs; 747 cell_t nreturns; 748 cell_t virt; 749 cell_t size; 750 cell_t align; 751 cell_t baseaddr; 752 } args; 753 754 755 args.name = ADR2CELL("claim"); 756 args.nargs = 3; 757 args.nreturns = 1; 758 args.virt = virt; 759 args.size = size; 760 args.align = align; 761 if (openfirmware(&args) == -1) 762 return (void *)-1; 763 return args.baseaddr; 764 #else 765 /* 766 * Sun Ultra machines run the firmware with VM enabled, 767 * so you need to handle allocating and mapping both 768 * virtual and physical memory. Ugh. 769 */ 770 771 paddr_t paddr; 772 void* newvirt = NULL; 773 774 if (virt == NULL) { 775 if ((virt = (void*)OF_alloc_virt(size, align)) == (void*)-1) { 776 printf("OF_alloc_virt(%d,%d) failed w/%p\n", size, align, virt); 777 return (void *)-1; 778 } 779 } else { 780 if ((newvirt = (void*)OF_claim_virt((vaddr_t)virt, size)) == (void*)-1) { 781 printf("OF_claim_virt(%p,%d) failed w/%p\n", virt, size, newvirt); 782 return (void *)-1; 783 } 784 } 785 if ((paddr = OF_alloc_phys(size, align)) == (paddr_t)-1) { 786 printf("OF_alloc_phys(%d,%d) failed\n", size, align); 787 OF_free_virt((vaddr_t)virt, size); 788 return (void *)-1; 789 } 790 if (OF_map_phys(paddr, size, (vaddr_t)virt, -1) == -1) { 791 printf("OF_map_phys(0x%lx,%d,%p,%d) failed\n", 792 (u_long)paddr, size, virt, -1); 793 OF_free_phys((paddr_t)paddr, size); 794 OF_free_virt((vaddr_t)virt, size); 795 return (void *)-1; 796 } 797 return (void *)virt; 798 #endif 799 } 800
Indexes created Sat Oct 11 19:10:01 GMT 2025