console.c revision 8028:6b05deee0ca3
1/* 2 * Copyright (c) 2003, 2004 3 * The Regents of The University of Michigan 4 * All Rights Reserved 5 * 6 * This code is part of the M5 simulator. 7 * 8 * Permission is granted to use, copy, create derivative works and 9 * redistribute this software and such derivative works for any purpose, 10 * so long as the copyright notice above, this grant of permission, and 11 * the disclaimer below appear in all copies made; and so long as the 12 * name of The University of Michigan is not used in any advertising or 13 * publicity pertaining to the use or distribution of this software 14 * without specific, written prior authorization. 15 * 16 * THIS SOFTWARE IS PROVIDED AS IS, WITHOUT REPRESENTATION FROM THE 17 * UNIVERSITY OF MICHIGAN AS TO ITS FITNESS FOR ANY PURPOSE, AND WITHOUT 18 * WARRANTY BY THE UNIVERSITY OF MICHIGAN OF ANY KIND, EITHER EXPRESS OR 19 * IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF 20 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE REGENTS OF 21 * THE UNIVERSITY OF MICHIGAN SHALL NOT BE LIABLE FOR ANY DAMAGES, 22 * INCLUDING DIRECT, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL 23 * DAMAGES, WITH RESPECT TO ANY CLAIM ARISING OUT OF OR IN CONNECTION 24 * WITH THE USE OF THE SOFTWARE, EVEN IF IT HAS BEEN OR IS HEREAFTER 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. 26 * 27 * Modified for M5 by: Ali G. Saidi 28 * Nathan L. Binkert 29 */ 30 31/* 32 * Copyright 1993 Hewlett-Packard Development Company, L.P. 33 * 34 * Permission is hereby granted, free of charge, to any person 35 * obtaining a copy of this software and associated documentation 36 * files (the "Software"), to deal in the Software without 37 * restriction, including without limitation the rights to use, copy, 38 * modify, merge, publish, distribute, sublicense, and/or sell copies 39 * of the Software, and to permit persons to whom the Software is 40 * furnished to do so, subject to the following conditions: 41 * 42 * The above copyright notice and this permission notice shall be 43 * included in all copies or substantial portions of the Software. 44 * 45 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 46 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 47 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 48 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 49 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 50 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 51 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 52 * SOFTWARE. 53 */ 54 55/* ****************************************** 56 * M5 Console 57 * ******************************************/ 58 59#include <linux/stddef.h> 60#include <sys/types.h> 61 62#define CONSOLE 63#include "access.h" 64#include "cserve.h" 65#include "rpb.h" 66 67#define CONS_INT_TX 0x01 /* interrupt enable / state bits */ 68#define CONS_INT_RX 0x02 69 70#define PAGE_SIZE (8192) 71 72#define KSTACK_REGION_VA 0x20040000 73 74#define KSEG 0xfffffc0000000000 75#define K1BASE 0xfffffc8000000000 76#define KSEG_TO_PHYS(x) (((ulong)x) & ~KSEG) 77 78#define ROUNDUP8(x) ((ulong)(((ulong)x)+7) & ~7) 79#define ROUNDUP128(x) ((ulong)(((ulong)x) + 127) & ~127) 80#define ROUNDUP8K(x) ((ulong)(((ulong)(x)) + 8191) & ~8191) 81 82#define FIRST(x) ((((ulong)(x)) >> 33) & 0x3ff) 83#define SECOND(x) ((((ulong)(x)) >> 23) & 0x3ff) 84#define THIRD(x) ((((ulong)(x)) >> 13) & 0x3ff) 85#define THIRD_XXX(x) ((((ulong)(x)) >> 13) & 0xfff) 86#define PFN(x) ((((ulong)(x) & ~KSEG) >> 13)) 87 88/* Kernel write | kernel read | valid */ 89#define KPTE(x) ((ulong)((((ulong)(x)) << 32) | 0x1101)) 90 91#define HWRPB_PAGES 16 92 93#define NUM_KERNEL_THIRD (4) 94 95#define printf_lock(args...) \ 96 do { \ 97 SpinLock(&theLock); \ 98 printf(args); \ 99 SpinUnlock(&theLock); \ 100 } while (0) 101 102 103void unixBoot(int argc, char **argv); 104void JToKern(char *bootadr, ulong rpb_percpu, ulong free_pfn, ulong k_argc, 105 char **k_argv, char **envp); 106void JToPal(ulong bootadr); 107void SlaveLoop(int cpu); 108 109volatile struct AlphaAccess *m5AlphaAccess; 110struct AlphaAccess m5Conf; 111 112ulong theLock; 113 114extern void SpinLock(ulong *lock); 115#define SpinUnlock(_x) *(_x) = 0; 116 117struct _kernel_params { 118 char *bootadr; 119 ulong rpb_percpu; 120 ulong free_pfn; 121 ulong argc; 122 ulong argv; 123 ulong envp; /* NULL */ 124}; 125 126extern consoleCallback[]; 127extern consoleFixup[]; 128long CallBackDispatcher(); 129long CallBackFixup(); 130 131/* 132 * m5 console output 133 */ 134 135void 136InitConsole() 137{ 138} 139 140char 141GetChar() 142{ 143 return m5AlphaAccess->inputChar; 144} 145 146void 147PutChar(char c) 148{ 149 m5AlphaAccess->outputChar = c; 150} 151 152int 153passArgs(int argc) 154{ 155 return 0; 156} 157 158int 159main(int argc, char **argv) 160{ 161 int x, i; 162 uint *k1ptr, *ksegptr; 163 164 InitConsole(); 165 printf_lock("M5 console: m5AlphaAccess @ 0x%x\n", m5AlphaAccess); 166 167 /* 168 * get configuration from backdoor 169 */ 170 m5Conf.last_offset = m5AlphaAccess->last_offset; 171 printf_lock("Got Configuration %d\n", m5Conf.last_offset); 172 173 m5Conf.last_offset = m5AlphaAccess->last_offset; 174 m5Conf.version = m5AlphaAccess->version; 175 m5Conf.numCPUs = m5AlphaAccess->numCPUs; 176 m5Conf.intrClockFrequency = m5AlphaAccess->intrClockFrequency; 177 m5Conf.cpuClock = m5AlphaAccess->cpuClock; 178 m5Conf.mem_size = m5AlphaAccess->mem_size; 179 m5Conf.kernStart = m5AlphaAccess->kernStart; 180 m5Conf.kernEnd = m5AlphaAccess->kernEnd; 181 m5Conf.entryPoint = m5AlphaAccess->entryPoint; 182 m5Conf.diskUnit = m5AlphaAccess->diskUnit; 183 m5Conf.diskCount = m5AlphaAccess->diskCount; 184 m5Conf.diskPAddr = m5AlphaAccess->diskPAddr; 185 m5Conf.diskBlock = m5AlphaAccess->diskBlock; 186 m5Conf.diskOperation = m5AlphaAccess->diskOperation; 187 m5Conf.outputChar = m5AlphaAccess->outputChar; 188 m5Conf.inputChar = m5AlphaAccess->inputChar; 189 190 if (m5Conf.version != ALPHA_ACCESS_VERSION) { 191 panic("Console version mismatch. Console expects %d. has %d \n", 192 ALPHA_ACCESS_VERSION, m5Conf.version); 193 } 194 195 /* 196 * setup arguments to kernel 197 */ 198 unixBoot(argc, argv); 199 200 panic("unix failed to boot\n"); 201 return 1; 202} 203 204/* 205 * BOOTING 206 */ 207struct rpb m5_rpb = { 208 NULL, /* 000: physical self-reference */ 209 ((long)'H') | (((long)'W') << 8) | (((long)'R') << 16) | 210 ((long)'P' << 24) | (((long)'B') << 32), /* 008: contains "HWRPB" */ 211 6, /* 010: HWRPB version number */ 212 /* the byte count is wrong, but who needs it? - lance */ 213 0, /* 018: bytes in RPB perCPU CTB CRB MEDSC */ 214 0, /* 020: primary cpu id */ 215 PAGE_SIZE, /* 028: page size in bytes */ 216 43, /* 030: number of phys addr bits */ 217 127, /* 038: max valid ASN */ 218 {'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','1'}, 219 /* 040: system serial num: 10 ascii chars */ 220 0, /* OVERRIDDEN */ 221 (1<<10), /* 058: system variation */ 222 'c'|('o'<<8)|('o'<<16)|('l'<< 24), /* 060: system revision */ 223 1024*4096, /* 068: scaled interval clock intr freq */ 224 0, /* 070: cycle counter frequency */ 225 0x200000000, /* 078: virtual page table base */ 226 0, /* 080: reserved */ 227 0, /* 088: offset to translation buffer hint */ 228 1, /* 090: number of processor slots OVERRIDDEN*/ 229 sizeof(struct rpb_percpu), /* 098: per-cpu slot size. OVERRIDDEN */ 230 0, /* 0A0: offset to per_cpu slots */ 231 1, /* 0A8: number of CTBs */ 232 sizeof(struct ctb_tt), 233 0, /* 0B8: offset to CTB (cons term block) */ 234 0, /* 0C0: offset to CRB (cons routine block) */ 235 0, /* 0C8: offset to memory descriptor table */ 236 0, /* 0D0: offset to config data block */ 237 0, /* 0D8: offset to FRU table */ 238 0, /* 0E0: virt addr of save term routine */ 239 0, /* 0E8: proc value for save term routine */ 240 0, /* 0F0: virt addr of restore term routine */ 241 0, /* 0F8: proc value for restore term routine */ 242 0, /* 100: virt addr of CPU restart routine */ 243 0, /* 108: proc value for CPU restart routine */ 244 0, /* 110: used to determine presence of kdebug */ 245 0, /* 118: reserved for hardware */ 246/* the checksum is wrong, but who needs it? - lance */ 247 0, /* 120: checksum of prior entries in rpb */ 248 0, /* 128: receive ready bitmask */ 249 0, /* 130: transmit ready bitmask */ 250 0, /* 138: Dynamic System Recog. offset */ 251}; 252 253ulong m5_tbb[] = { 0x1e1e1e1e1e1e1e1e, 0x1e1e1e1e1e1e1e1e, 254 0x1e1e1e1e1e1e1e1e, 0x1e1e1e1e1e1e1e1e, 255 0x1e1e1e1e1e1e1e1e, 0x1e1e1e1e1e1e1e1e, 256 0x1e1e1e1e1e1e1e1e, 0x1e1e1e1e1e1e1e1e }; 257 258struct rpb_percpu m5_rpb_percpu = { 259 {0,0,0,0,0,0,1,{0,0},{0,0,0,0,0,0,0,0}}, /* 000: boot/restart HWPCB */ 260 (STATE_PA | STATE_PP | STATE_CV | 261 STATE_PV | STATE_PMV | STATE_PL), /* 080: per-cpu state bits */ 262 0xc000, /* 088: palcode memory length */ 263 0x2000, /* 090: palcode scratch length */ 264 0x4000, /* 098: paddr of pal mem space */ 265 0x2000, /* 0A0: paddr of pal scratch space */ 266 (2 << 16) | (5 << 8) | 1, /* 0A8: PALcode rev required */ 267 11 | (2L << 32), /* 0B0: processor type */ 268 7, /* 0B8: processor variation */ 269 'M'|('5'<<8)|('A'<<16)|('0'<<24), /* 0C0: processor revision */ 270 {'M','5','/','A','l','p','h','a','0','0','0','0','0','0','0','0'}, 271 /* 0C8: proc serial num: 10 chars */ 272 0, /* 0D8: phys addr of logout area */ 273 0, /* 0E0: len in bytes of logout area */ 274 0, /* 0E8: halt pcb base */ 275 0, /* 0F0: halt pc */ 276 0, /* 0F8: halt ps */ 277 0, /* 100: halt arg list (R25) */ 278 0, /* 108: halt return address (R26) */ 279 0, /* 110: halt procedure value (R27) */ 280 0, /* 118: reason for halt */ 281 0, /* 120: for software */ 282 {0}, /* 128: inter-console comm buffer */ 283 {1,0,5,0,0,0,0,0,0,0,0,0,0,0,0,0}, /* 1D0: PALcode revs available */ 284 0 /* 250: reserved for arch use */ 285/* the dump stack grows from the end of the rpb page not to reach here */ 286}; 287 288struct _m5_rpb_mdt { 289 long rpb_checksum; /* 000: checksum of entire mem desc table */ 290 long rpb_impaddr; /* 008: PA of implementation dep info */ 291 long rpb_numcl; /* 010: number of clusters */ 292 struct rpb_cluster rpb_cluster[3]; /* first instance of a cluster */ 293}; 294 295struct _m5_rpb_mdt m5_rpb_mdt = { 296 0, /* 000: checksum of entire mem desc table */ 297 0, /* 008: PA of implementation dep info */ 298 0, /* 010: number of clusters */ 299 {{ 0, /* 000: starting PFN of this cluster */ 300 0, /* 008: count of PFNs in this cluster */ 301 0, /* 010: count of tested PFNs in cluster */ 302 0, /* 018: va of bitmap */ 303 0, /* 020: pa of bitmap */ 304 0, /* 028: checksum of bitmap */ 305 1 /* 030: usage of cluster */ 306 }, 307 { 0, /* 000: starting PFN of this cluster */ 308 0, /* 008: count of PFNs in this cluster */ 309 0, /* 010: count of tested PFNs in cluster */ 310 0, /* 018: va of bitmap */ 311 0, /* 020: pa of bitmap */ 312 0, /* 028: checksum of bitmap */ 313 0 /* 030: usage of cluster */ 314 }, 315 { 0, /* 000: starting PFN of this cluster */ 316 0, /* 008: count of PFNs in this cluster */ 317 0, /* 010: count of tested PFNs in cluster */ 318 0, /* 018: va of bitmap */ 319 0, /* 020: pa of bitmap */ 320 0, /* 028: checksum of bitmap */ 321 0 /* 030: usage of cluster */ 322 }} 323}; 324 325/* constants for slotinfo bus_type subfield */ 326#define SLOTINFO_TC 0 327#define SLOTINFO_ISA 1 328#define SLOTINFO_EISA 2 329#define SLOTINFO_PCI 3 330 331struct rpb_ctb m5_rpb_ctb = { 332 CONS_DZ, /* 000: console type */ 333 0, /* 008: console unit */ 334 0, /* 010: reserved */ 335 0 /* 018: byte length of device dep portion */ 336}; 337 338/* we don't do any fixup (aka relocate the console) - we hope */ 339struct rpb_crb m5_rpb_crb = { 340 0, /* va of call-back dispatch rtn */ 341 0, /* pa of call-back dispatch rtn */ 342 0, /* va of call-back fixup rtn */ 343 0, /* pa of call-back fixup rtn */ 344 0, /* number of entries in phys/virt map */ 345 0 /* Number of pages to be mapped */ 346}; 347 348struct _rpb_name { 349 ulong length; 350 char name[16]; 351}; 352 353extern struct _rpb_name m5_name; 354 355struct rpb_dsr m5_rpb_dsr = { 356 0, 357 0, 358 0, 359}; 360 361struct _rpb_name m5_name = { 362 16, 363 {'U','M','I','C','H',' ','M','5','/','A','L','P','H','A',' ',0}, 364}; 365 366/* 367 * M5 has one LURT entry: 368 * 1050 is for workstations 369 * 1100 is servers (and is needed for CXX) 370 */ 371long m5_lurt[10] = { 9, 12, -1, -1, -1, -1, -1, -1, 1100, 1100 }; 372 373ulong unix_boot_mem; 374ulong bootadr; 375 376char **kargv; 377int kargc; 378ulong free_pfn; 379struct rpb_percpu *rpb_percpu; 380 381char * 382unix_boot_alloc(int pages) 383{ 384 char *ret = (char *)unix_boot_mem; 385 unix_boot_mem += (pages * PAGE_SIZE); 386 return ret; 387} 388 389ulong *first = 0; 390ulong *third_rpb = 0; 391ulong *reservedFixup = 0; 392 393int strcpy(char *dst, char *src); 394 395struct rpb *rpb; 396extern ulong _end; 397 398void 399unixBoot(int argc, char **argv) 400{ 401 ulong *second, *third_kernel, ptr, *tbb, size, *percpu_logout; 402 unsigned char *mdt_bitmap; 403 long *lp1, *lp2, sum; 404 int i, cl; 405 ulong kern_first_page; 406 ulong mem_size = m5Conf.mem_size; 407 408 ulong mem_pages = mem_size / PAGE_SIZE, cons_pages; 409 ulong mdt_bitmap_pages = mem_pages / (PAGE_SIZE*8); 410 411 ulong kernel_bytes, ksp, kernel_end, *unix_kernel_stack, bss, 412 ksp_bottom, ksp_top; 413 struct rpb_ctb *rpb_ctb; 414 struct ctb_tt *ctb_tt; 415 struct rpb_dsr *rpb_dsr; 416 struct rpb_crb *rpb_crb; 417 struct _m5_rpb_mdt *rpb_mdt; 418 int *rpb_lurt; 419 char *rpb_name; 420 ulong nextPtr; 421 422 printf_lock("memsize %x pages %x \n", mem_size, mem_pages); 423 424 /* Allocate: 425 * two pages for the HWRPB 426 * five page table pages: 427 * 1: First level page table 428 * 1: Second level page table 429 * 1: Third level page table for HWRPB 430 * 2: Third level page table for kernel (for up to 16MB) 431 * set up the page tables 432 * load the kernel at the physical address 0x230000 433 * build the HWRPB 434 * set up memory descriptor table to give up the 435 * physical memory between the end of the page 436 * tables and the start of the kernel 437 * enable kseg addressing 438 * jump to the kernel 439 */ 440 441 unix_boot_mem = ROUNDUP8K(&_end); 442 443 printf_lock("First free page after ROM 0x%x\n", unix_boot_mem); 444 445 rpb = (struct rpb *)unix_boot_alloc(HWRPB_PAGES); 446 447 mdt_bitmap = (unsigned char *)unix_boot_alloc(mdt_bitmap_pages); 448 first = (ulong *)unix_boot_alloc(1); 449 second = (ulong *)unix_boot_alloc(1); 450 third_rpb = (ulong *)unix_boot_alloc(1); 451 reservedFixup = (ulong*) unix_boot_alloc(1); 452 third_kernel = (ulong *)unix_boot_alloc(NUM_KERNEL_THIRD); 453 percpu_logout = (ulong*)unix_boot_alloc(1); 454 455 cons_pages = KSEG_TO_PHYS(unix_boot_mem) / PAGE_SIZE; 456 457 /* Set up the page tables */ 458 bzero((char *)first, PAGE_SIZE); 459 bzero((char *)second, PAGE_SIZE); 460 bzero((char *)reservedFixup, PAGE_SIZE); 461 bzero((char *)third_rpb, HWRPB_PAGES * PAGE_SIZE); 462 bzero((char *)third_kernel, PAGE_SIZE * NUM_KERNEL_THIRD); 463 464 first[0] = KPTE(PFN(second)); 465 first[1] = KPTE(PFN(first)); /* Region 3 */ 466 467 /* Region 0 */ 468 second[SECOND(0x10000000)] = KPTE(PFN(third_rpb)); 469 470 for (i = 0; i < NUM_KERNEL_THIRD; i++) { 471 /* Region 1 */ 472 second[SECOND(0x20000000) + i] = KPTE(PFN(third_kernel) + i); 473 } 474 475 /* Region 2 */ 476 second[SECOND(0x40000000)] = KPTE(PFN(second)); 477 478 479 /* For some obscure reason, Dec Unix's database read 480 * from /etc/sysconfigtab is written to this fixed 481 * mapped memory location. Go figure, since it is 482 * not initialized by the console. Maybe it is 483 * to look at the database from the console 484 * after a boot/crash. 485 * 486 * Black magic to estimate the max size. SEGVs on overflow 487 * bugnion 488 */ 489 490#define DATABASE_BASE 0x20000000 491#define DATABASE_END 0x20020000 492 493 ulong *dbPage = (ulong*)unix_boot_alloc(1); 494 bzero(dbPage, PAGE_SIZE); 495 second[SECOND(DATABASE_BASE)] = KPTE(PFN(dbPage)); 496 for (i = DATABASE_BASE; i < DATABASE_END ; i += PAGE_SIZE) { 497 ulong *db = (ulong*)unix_boot_alloc(1); 498 dbPage[THIRD(i)] = KPTE(PFN(db)); 499 } 500 501 /* Region 0 */ 502 /* Map the HWRPB */ 503 for (i = 0; i < HWRPB_PAGES; i++) 504 third_rpb[i] = KPTE(PFN(rpb) + i); 505 506 /* Map the MDT bitmap table */ 507 for (i = 0; i < mdt_bitmap_pages; i++) { 508 third_rpb[HWRPB_PAGES + i] = KPTE(PFN(mdt_bitmap) + i); 509 } 510 511 /* Protect the PAL pages */ 512 for (i = 1; i < PFN(first); i++) 513 third_rpb[HWRPB_PAGES + mdt_bitmap_pages + i] = KPTE(i); 514 515 /* Set up third_kernel after it's loaded, when we know where it is */ 516 kern_first_page = (KSEG_TO_PHYS(m5Conf.kernStart)/PAGE_SIZE); 517 kernel_end = ROUNDUP8K(m5Conf.kernEnd); 518 bootadr = m5Conf.entryPoint; 519 520 printf_lock("HWRPB 0x%x l1pt 0x%x l2pt 0x%x l3pt_rpb 0x%x l3pt_kernel 0x%x" 521 " l2reserv 0x%x\n", 522 rpb, first, second, third_rpb, third_kernel, reservedFixup); 523 if (kernel_end - m5Conf.kernStart > (0x800000*NUM_KERNEL_THIRD)) { 524 printf_lock("Kernel is more than 8MB 0x%x - 0x%x = 0x%x\n", 525 kernel_end, m5Conf.kernStart, 526 kernel_end - m5Conf.kernStart ); 527 panic("kernel too big\n"); 528 } 529 printf_lock("kstart = 0x%x, kend = 0x%x, kentry = 0x%x, numCPUs = 0x%x\n", m5Conf.kernStart, m5Conf.kernEnd, m5Conf.entryPoint, m5Conf.numCPUs); 530 ksp_bottom = (ulong)unix_boot_alloc(1); 531 ksp_top = ksp_bottom + PAGE_SIZE; 532 ptr = (ulong) ksp_bottom; 533 bzero((char *)ptr, PAGE_SIZE); 534 dbPage[THIRD(KSTACK_REGION_VA)] = 0; /* Stack Guard Page */ 535 dbPage[THIRD(KSTACK_REGION_VA + PAGE_SIZE)] = KPTE(PFN(ptr)); /* Kernel Stack Page */ 536 dbPage[THIRD(KSTACK_REGION_VA + 2*PAGE_SIZE)] = 0; /* Stack Guard Page */ 537 538 /* put argv into the bottom of the stack - argv starts at 1 because 539 * the command thatr got us here (i.e. "unixboot) is in argv[0]. 540 */ 541 ksp = ksp_top - 8; /* Back up one longword */ 542 ksp -= argc * sizeof(char *); /* Make room for argv */ 543 kargv = (char **) ksp; 544 for (i = 1; i < argc; i++) { /* Copy arguments to stack */ 545 ksp -= ((strlen(argv[i]) + 1) + 7) & ~0x7; 546 kargv[i-1] = (char *) ksp; 547 strcpy(kargv[i - 1], argv[i]); 548 } 549 kargc = i - 1; 550 kargv[kargc] = NULL; /* just to be sure; doesn't seem to be used */ 551 ksp -= sizeof(char *); /* point above last arg for no real reason */ 552 553 free_pfn = PFN(kernel_end); 554 555 bcopy((char *)&m5_rpb, (char *)rpb, sizeof(struct rpb)); 556 557 rpb->rpb_selfref = (struct rpb *) KSEG_TO_PHYS(rpb); 558 rpb->rpb_string = 0x0000004250525748; 559 560 tbb = (ulong *) (((char *) rpb) + ROUNDUP8(sizeof(struct rpb))); 561 rpb->rpb_trans_off = (ulong)tbb - (ulong)rpb; 562 bcopy((char *)m5_tbb, (char *)tbb, sizeof(m5_tbb)); 563 564 /* 565 * rpb_counter. Use to determine timeouts in OS. 566 * XXX must be patched after a checkpoint restore (I guess) 567 */ 568 569 printf_lock("CPU Clock at %d MHz IntrClockFrequency=%d \n", 570 m5Conf.cpuClock, m5Conf.intrClockFrequency); 571 rpb->rpb_counter = m5Conf.cpuClock * 1000 * 1000; 572 573 /* 574 * By definition, the rpb_clock is scaled by 4096 (in hz) 575 */ 576 rpb->rpb_clock = m5Conf.intrClockFrequency * 4096; 577 578 /* 579 * Per CPU Slots. Multiprocessor support. 580 */ 581 int percpu_size = ROUNDUP128(sizeof(struct rpb_percpu)); 582 583 printf_lock("Booting with %d processor(s) \n", m5Conf.numCPUs); 584 585 rpb->rpb_numprocs = m5Conf.numCPUs; 586 rpb->rpb_slotsize = percpu_size; 587 rpb_percpu = (struct rpb_percpu *) 588 ROUNDUP128(((ulong)tbb) + (sizeof(m5_tbb))); 589 590 rpb->rpb_percpu_off = (ulong)rpb_percpu - (ulong)rpb; 591 592 for (i = 0; i < m5Conf.numCPUs; i++) { 593 struct rpb_percpu *thisCPU = (struct rpb_percpu*) 594 ((ulong)rpb_percpu + percpu_size * i); 595 596 bzero((char *)thisCPU, percpu_size); 597 bcopy((char *)&m5_rpb_percpu, (char *)thisCPU, 598 sizeof(struct rpb_percpu)); 599 600 thisCPU->rpb_pcb.rpb_ksp = (KSTACK_REGION_VA + 2*PAGE_SIZE - (ksp_top - ksp)); 601 thisCPU->rpb_pcb.rpb_ptbr = PFN(first); 602 603 thisCPU->rpb_logout = KSEG_TO_PHYS(percpu_logout); 604 thisCPU->rpb_logout_len = PAGE_SIZE; 605 606 printf_lock("KSP: 0x%x PTBR 0x%x\n", 607 thisCPU->rpb_pcb.rpb_ksp, thisCPU->rpb_pcb.rpb_ptbr); 608 } 609 610 nextPtr = (ulong)rpb_percpu + percpu_size * m5Conf.numCPUs; 611 612 /* 613 * Console Terminal Block 614 */ 615 rpb_ctb = (struct rpb_ctb *) nextPtr; 616 ctb_tt = (struct ctb_tt*) rpb_ctb; 617 618 rpb->rpb_ctb_off = ((ulong)rpb_ctb) - (ulong)rpb; 619 rpb->rpb_ctb_size = sizeof(struct rpb_ctb); 620 621 bzero((char *)rpb_ctb, sizeof(struct ctb_tt)); 622 623 rpb_ctb->rpb_type = CONS_DZ; 624 rpb_ctb->rpb_length = sizeof(ctb_tt) - sizeof(rpb_ctb); 625 626 /* 627 * uart initizliation 628 */ 629 ctb_tt->ctb_tintr_vec = 0x6c0; /* matches tlaser pal code */ 630 ctb_tt->ctb_rintr_vec = 0x680; /* matches tlaser pal code */ 631 ctb_tt->ctb_term_type = CTB_GRAPHICS; 632 633 rpb_crb = (struct rpb_crb *) (((ulong)rpb_ctb) + sizeof(struct ctb_tt)); 634 rpb->rpb_crb_off = ((ulong)rpb_crb) - (ulong)rpb; 635 636 bzero((char *)rpb_crb, sizeof(struct rpb_crb)); 637 638 /* 639 * console callback stuff (m5) 640 */ 641 rpb_crb->rpb_num = 1; 642 rpb_crb->rpb_mapped_pages = HWRPB_PAGES; 643 rpb_crb->rpb_map[0].rpb_virt = 0x10000000; 644 rpb_crb->rpb_map[0].rpb_phys = KSEG_TO_PHYS(((ulong)rpb) & ~0x1fff); 645 rpb_crb->rpb_map[0].rpb_pgcount = HWRPB_PAGES; 646 647 printf_lock("Console Callback at 0x%x, fixup at 0x%x, crb offset: 0x%x\n", 648 rpb_crb->rpb_va_disp, rpb_crb->rpb_va_fixup, rpb->rpb_crb_off); 649 650 rpb_mdt = (struct _m5_rpb_mdt *)((ulong)rpb_crb + sizeof(struct rpb_crb)); 651 rpb->rpb_mdt_off = (ulong)rpb_mdt - (ulong)rpb; 652 bcopy((char *)&m5_rpb_mdt, (char *)rpb_mdt, sizeof(struct _m5_rpb_mdt)); 653 654 655 cl = 0; 656 rpb_mdt->rpb_cluster[cl].rpb_pfncount = kern_first_page; 657 cl++; 658 659 rpb_mdt->rpb_cluster[cl].rpb_pfn = kern_first_page; 660 rpb_mdt->rpb_cluster[cl].rpb_pfncount = mem_pages - kern_first_page; 661 rpb_mdt->rpb_cluster[cl].rpb_pfntested = 662 rpb_mdt->rpb_cluster[cl].rpb_pfncount; 663 rpb_mdt->rpb_cluster[cl].rpb_pa = KSEG_TO_PHYS(mdt_bitmap); 664 rpb_mdt->rpb_cluster[cl].rpb_va = 0x10000000 + HWRPB_PAGES * PAGE_SIZE; 665 cl++; 666 667 rpb_mdt->rpb_numcl = cl; 668 669 for (i = 0; i < cl; i++) 670 printf_lock("Memory cluster %d [%d - %d]\n", i, 671 rpb_mdt->rpb_cluster[i].rpb_pfn, 672 rpb_mdt->rpb_cluster[i].rpb_pfncount); 673 674 /* Checksum the rpb for good luck */ 675 sum = 0; 676 lp1 = (long *)&rpb_mdt->rpb_impaddr; 677 lp2 = (long *)&rpb_mdt->rpb_cluster[cl]; 678 while (lp1 < lp2) sum += *lp1++; 679 rpb_mdt->rpb_checksum = sum; 680 681 /* XXX should checksum the cluster descriptors */ 682 bzero((char *)mdt_bitmap, mdt_bitmap_pages * PAGE_SIZE); 683 for (i = 0; i < mem_pages/8; i++) 684 ((unsigned char *)mdt_bitmap)[i] = 0xff; 685 686 printf_lock("Initalizing mdt_bitmap addr 0x%x mem_pages %x \n", 687 (long)mdt_bitmap,(long)mem_pages); 688 689 m5_rpb.rpb_config_off = 0; 690 m5_rpb.rpb_fru_off = 0; 691 692 rpb_dsr = (struct rpb_dsr *)((ulong)rpb_mdt + sizeof(struct _m5_rpb_mdt)); 693 rpb->rpb_dsr_off = (ulong)rpb_dsr - (ulong)rpb; 694 bzero((char *)rpb_dsr, sizeof(struct rpb_dsr)); 695 rpb_dsr->rpb_smm = 1578; /* Official XXM SMM number as per SRM */ 696 rpb_dsr->rpb_smm = 1089; /* Official Alcor SMM number as per SRM */ 697 698 rpb_lurt = (int *) ROUNDUP8((ulong)rpb_dsr + sizeof(struct rpb_dsr)); 699 rpb_dsr->rpb_lurt_off = ((ulong) rpb_lurt) - (ulong) rpb_dsr; 700 bcopy((char *)m5_lurt, (char *)rpb_lurt, sizeof(m5_lurt)); 701 702 rpb_name = (char *) ROUNDUP8(((ulong)rpb_lurt) + sizeof(m5_lurt)); 703 rpb_dsr->rpb_sysname_off = ((ulong) rpb_name) - (ulong) rpb_dsr; 704#define THENAME " M5/Alpha " 705 sum = sizeof(THENAME); 706 bcopy(THENAME, rpb_name, sum); 707 *(ulong *)rpb_name = sizeof(THENAME); /* put in length field */ 708 709 /* calculate size of rpb */ 710 rpb->rpb_size = ((ulong) &rpb_name[sum]) - (ulong)rpb; 711 712 if (rpb->rpb_size > PAGE_SIZE * HWRPB_PAGES) { 713 panic("HWRPB_PAGES=%d too small for HWRPB !!! \n"); 714 } 715 716 ulong *rpbptr = (ulong*)((char*)rpb_dsr + sizeof(struct rpb_dsr)); 717 rpb_crb->rpb_pa_disp = KSEG_TO_PHYS(rpbptr); 718 rpb_crb->rpb_va_disp = 0x10000000 + 719 (((ulong)rpbptr - (ulong)rpb) & (0x2000 * HWRPB_PAGES - 1)); 720 printf_lock("ConsoleDispatch at virt %x phys %x val %x\n", 721 rpb_crb->rpb_va_disp, rpb_crb->rpb_pa_disp, consoleCallback); 722 *rpbptr++ = 0; 723 *rpbptr++ = (ulong) consoleCallback; 724 rpb_crb->rpb_pa_fixup = KSEG_TO_PHYS(rpbptr); 725 rpb_crb->rpb_va_fixup = 0x10000000 + 726 (((ulong)rpbptr - (ulong)rpb) & (0x2000 * HWRPB_PAGES - 1)); 727 *rpbptr++ = 0; 728 729 *rpbptr++ = (ulong) consoleFixup; 730 731 /* Checksum the rpb for good luck */ 732 sum = 0; 733 lp1 = (long *)rpb; 734 lp2 = &rpb->rpb_checksum; 735 while (lp1 < lp2) 736 sum += *lp1++; 737 *lp2 = sum; 738 739 /* 740 * MP bootstrap 741 */ 742 for (i = 1; i < m5Conf.numCPUs; i++) { 743 ulong stack = (ulong)unix_boot_alloc(1); 744 printf_lock("Bootstraping CPU %d with sp=0x%x\n", i, stack); 745 m5AlphaAccess->cpuStack[i] = stack; 746 } 747 748 /* 749 * Make sure that we are not stepping on the kernel 750 */ 751 if ((ulong)unix_boot_mem >= (ulong)m5Conf.kernStart) { 752 panic("CONSOLE: too much memory. Smashing kernel\n"); 753 } else { 754 printf_lock("unix_boot_mem ends at %x \n", unix_boot_mem); 755 } 756 757 JToKern((char *)bootadr, (ulong)rpb_percpu, free_pfn, kargc, kargv, NULL); 758} 759 760 761void 762JToKern(char *bootadr, ulong rpb_percpu, ulong free_pfn, ulong k_argc, 763 char **k_argv, char **envp) 764{ 765 extern ulong palJToKern[]; 766 767 struct _kernel_params *kernel_params = (struct _kernel_params *) KSEG; 768 int i; 769 770 printf_lock("k_argc = %d ", k_argc); 771 for (i = 0; i < k_argc; i++) { 772 printf_lock("'%s' ", k_argv[i]); 773 } 774 printf_lock("\n"); 775 776 kernel_params->bootadr = bootadr; 777 kernel_params->rpb_percpu = KSEG_TO_PHYS(rpb_percpu); 778 kernel_params->free_pfn = free_pfn; 779 kernel_params->argc = k_argc; 780 kernel_params->argv = (ulong)k_argv; 781 kernel_params->envp = (ulong)envp; 782 printf_lock("jumping to kernel at 0x%x, (PCBB 0x%x pfn %d)\n", 783 bootadr, rpb_percpu, free_pfn); 784 JToPal(KSEG_TO_PHYS(palJToKern)); 785 printf_lock("returned from JToPal. Looping\n"); 786 while (1) 787 continue; 788} 789 790void 791JToPal(ulong bootadr) 792{ 793 cServe(bootadr, 0, CSERVE_K_JTOPAL); 794 795 /* 796 * Make sure that floating point is enabled incase 797 * it was disabled by the user program. 798 */ 799 wrfen(1); 800} 801 802int 803strcpy(char *dst, char *src) 804{ 805 int i = 0; 806 while (*src) { 807 *dst++ = *src++; 808 i++; 809 } 810 return i; 811} 812 813/* 814 * Console I/O 815 * 816 */ 817 818int numOpenDevices = 11; 819struct { 820 char name[128]; 821} deviceState[32]; 822 823#define BOOTDEVICE_NAME "SCSI 1 0 0 1 100 0" 824 825void 826DeviceOperation(long op, long channel, long count, long address, long block) 827{ 828 long pAddr; 829 830 if (strcmp(deviceState[channel].name, BOOTDEVICE_NAME )) { 831 panic("DeviceRead: only implemented for root disk \n"); 832 } 833 pAddr = KSEG_TO_PHYS(address); 834 if (pAddr + count > m5Conf.mem_size) { 835 panic("DeviceRead: request out of range \n"); 836 } 837 838 m5AlphaAccess->diskCount = count; 839 m5AlphaAccess->diskPAddr = pAddr; 840 m5AlphaAccess->diskBlock = block; 841 m5AlphaAccess->diskOperation = op; /* launch */ 842} 843 844/* 845 * M5 Console callbacks 846 * 847 */ 848 849/* AXP manual 2-31 */ 850#define CONSCB_GETC 0x1 851#define CONSCB_PUTS 0x2 852#define CONSCB_RESET_TERM 0x3 853#define CONSCB_SET_TERM_INT 0x4 854#define CONSCB_SET_TERM_CTL 0x5 855#define CONSCB_PROCESS_KEY 0x6 856#define CONSCB_OPEN_CONSOLE 0x7 857#define CONSCB_CLOSE_CONSOLE 0x8 858 859#define CONSCB_OPEN 0x10 860#define CONSCB_CLOSE 0x11 861#define CONSCB_READ 0x13 862 863#define CONSCB_GETENV 0x22 864 865/* AXP manual 2-26 */ 866#define ENV_AUTO_ACTION 0X01 867#define ENV_BOOT_DEV 0X02 868#define ENV_BOOTDEF_DEV 0X03 869#define ENV_BOOTED_DEV 0X04 870#define ENV_BOOT_FILE 0X05 871#define ENV_BOOTED_FILE 0X06 872#define ENV_BOOT_OSFLAGS 0X07 873#define ENV_BOOTED_OSFLAGS 0X08 874#define ENV_BOOT_RESET 0X09 875#define ENV_DUMP_DEV 0X0A 876#define ENV_ENABLE_AUDIT 0X0B 877#define ENV_LICENSE 0X0C 878#define ENV_CHAR_SET 0X0D 879#define ENV_LANGUAGE 0X0E 880#define ENV_TTY_DEV 0X0F 881#define ENV_SCSIID 0X42 882#define ENV_SCSIFAST 0X43 883#define ENV_COM1_BAUD 0X44 884#define ENV_COM1_MODEM 0X45 885#define ENV_COM1_FLOW 0X46 886#define ENV_COM1_MISC 0X47 887#define ENV_COM2_BAUD 0X48 888#define ENV_COM2_MODEM 0X49 889#define ENV_COM2_FLOW 0X4A 890#define ENV_COM2_MISC 0X4B 891#define ENV_PASSWORD 0X4C 892#define ENV_SECURE 0X4D 893#define ENV_LOGFAIL 0X4E 894#define ENV_SRM2DEV_ID 0X4F 895 896#define MAX_ENVLEN 32 897 898char env_auto_action[MAX_ENVLEN] = "BOOT"; 899char env_boot_dev[MAX_ENVLEN] = ""; 900char env_bootdef_dev[MAX_ENVLEN] = ""; 901char env_booted_dev[MAX_ENVLEN] = BOOTDEVICE_NAME; 902char env_boot_file[MAX_ENVLEN] = ""; 903char env_booted_file[MAX_ENVLEN] = ""; 904char env_boot_osflags[MAX_ENVLEN] = ""; 905char env_booted_osflags[MAX_ENVLEN] = ""; 906char env_boot_reset[MAX_ENVLEN] = ""; 907char env_dump_dev[MAX_ENVLEN] = ""; 908char env_enable_audit[MAX_ENVLEN] = ""; 909char env_license[MAX_ENVLEN] = ""; 910char env_char_set[MAX_ENVLEN] = ""; 911char env_language[MAX_ENVLEN] = ""; 912char env_tty_dev[MAX_ENVLEN] = "0"; 913char env_scsiid[MAX_ENVLEN] = ""; 914char env_scsifast[MAX_ENVLEN] = ""; 915char env_com1_baud[MAX_ENVLEN] = ""; 916char env_com1_modem[MAX_ENVLEN] = ""; 917char env_com1_flow[MAX_ENVLEN] = ""; 918char env_com1_misc[MAX_ENVLEN] = ""; 919char env_com2_baud[MAX_ENVLEN] = ""; 920char env_com2_modem[MAX_ENVLEN] = ""; 921char env_com2_flow[MAX_ENVLEN] = ""; 922char env_com2_misc[MAX_ENVLEN] = ""; 923char env_password[MAX_ENVLEN] = ""; 924char env_secure[MAX_ENVLEN] = ""; 925char env_logfail[MAX_ENVLEN] = ""; 926char env_srm2dev_id[MAX_ENVLEN] = ""; 927 928#define MAX_ENV_INDEX 100 929char *envptr[MAX_ENV_INDEX] = { 930 0, /* 0x00 */ 931 env_auto_action, /* 0x01 */ 932 env_boot_dev, /* 0x02 */ 933 env_bootdef_dev, /* 0x03 */ 934 env_booted_dev, /* 0x04 */ 935 env_boot_file, /* 0x05 */ 936 env_booted_file, /* 0x06 */ 937 env_boot_osflags, /* 0x07 */ 938 env_booted_osflags, /* 0x08 */ 939 env_boot_reset, /* 0x09 */ 940 env_dump_dev, /* 0x0A */ 941 env_enable_audit, /* 0x0B */ 942 env_license, /* 0x0C */ 943 env_char_set, /* 0x0D */ 944 (char *)&env_language, /* 0x0E */ 945 env_tty_dev, /* 0x0F */ 946 0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0, /* 0x10 - 0x1F */ 947 0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0, /* 0x20 - 0x2F */ 948 0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0, /* 0x30 - 0x3F */ 949 0, /* 0x40 */ 950 0, /* 0x41 */ 951 env_scsiid, /* 0x42 */ 952 env_scsifast, /* 0x43 */ 953 env_com1_baud, /* 0x44 */ 954 env_com1_modem, /* 0x45 */ 955 env_com1_flow, /* 0x46 */ 956 env_com1_misc, /* 0x47 */ 957 env_com2_baud, /* 0x48 */ 958 env_com2_modem, /* 0x49 */ 959 env_com2_flow, /* 0x4A */ 960 env_com2_misc, /* 0x4B */ 961 env_password, /* 0x4C */ 962 env_secure, /* 0x4D */ 963 env_logfail, /* 0x4E */ 964 env_srm2dev_id, /* 0x4F */ 965 0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0, /* 0x50 - 0x5F */ 966 0, /* 0x60 */ 967 0, /* 0x61 */ 968 0, /* 0x62 */ 969 0, /* 0x63 */ 970}; 971 972long 973CallBackDispatcher(long a0, long a1, long a2, long a3, long a4) 974{ 975 long i; 976 switch (a0) { 977 case CONSCB_GETC: 978 return GetChar(); 979 980 case CONSCB_PUTS: 981 for (i = 0; i < a3; i++) 982 PutChar(*((char *)a2 + i)); 983 return a3; 984 985 case CONSCB_GETENV: 986 if (a1 >= 0 && a1 < MAX_ENV_INDEX && envptr[a1] != 0 && *envptr[a1]) { 987 i = strcpy((char*)a2, envptr[a1]); 988 } else { 989 strcpy((char*)a2, ""); 990 i = (long)0xc000000000000000; 991 if (a1 >= 0 && a1 < MAX_ENV_INDEX) 992 printf_lock("GETENV unsupported option %d (0x%x)\n", a1, a1); 993 else 994 printf_lock("GETENV unsupported option %s\n", a1); 995 } 996 997 if (i > a3) 998 panic("CONSCB_GETENV overwrote buffer\n"); 999 return i; 1000 1001 case CONSCB_OPEN: 1002 bcopy((char*)a1, deviceState[numOpenDevices].name, a2); 1003 deviceState[numOpenDevices].name[a2] = '\0'; 1004 printf_lock("CONSOLE OPEN : %s --> success \n", 1005 deviceState[numOpenDevices].name); 1006 return numOpenDevices++; 1007 1008 case CONSCB_READ: 1009 DeviceOperation(a0, a1, a2, a3, a4); 1010 break; 1011 1012 case CONSCB_CLOSE: 1013 break; 1014 1015 case CONSCB_OPEN_CONSOLE: 1016 printf_lock("CONSOLE OPEN\n"); 1017 return 0; /* success */ 1018 break; /* not reached */ 1019 1020 case CONSCB_CLOSE_CONSOLE: 1021 printf_lock("CONSOLE CLOSE\n"); 1022 return 0; /* success */ 1023 break; /* not reached */ 1024 1025 default: 1026 panic("CallBackDispatcher(%x,%x,%x,%x,%x)\n", a0, a1, a2, a3, a4); 1027 } 1028 1029 return 0; 1030} 1031 1032long 1033CallBackFixup(int a0, int a1, int a2) 1034{ 1035 long temp; 1036 /* 1037 * Linux uses r8 for the current pointer (pointer to data 1038 * structure contating info about currently running process). It 1039 * is set when the kernel starts and is expected to remain 1040 * there... Problem is that the unlike the kernel, the console 1041 * does not prevent the assembler from using r8. So here is a work 1042 * around. So far this has only been a problem in CallBackFixup() 1043 * but any other call back functions couldd cause a problem at 1044 * some point 1045 */ 1046 1047 /* save off the current pointer to a temp variable */ 1048 asm("bis $8, $31, %0" : "=r" (temp)); 1049 1050 /* call original code */ 1051 printf_lock("CallbackFixup %x %x, t7=%x\n", a0, a1, temp); 1052 1053 /* restore the current pointer */ 1054 asm("bis %0, $31, $8" : : "r" (temp) : "$8"); 1055 1056 return 0; 1057} 1058 1059void 1060SlaveCmd(int cpu, struct rpb_percpu *my_rpb) 1061{ 1062 extern ulong palJToSlave[]; 1063 1064 printf_lock("Slave CPU %d console command %s", cpu, 1065 my_rpb->rpb_iccb.iccb_rxbuf); 1066 1067 my_rpb->rpb_state |= STATE_BIP; 1068 my_rpb->rpb_state &= ~STATE_RC; 1069 1070 printf_lock("SlaveCmd: restart %x %x vptb %x my_rpb %x my_rpb_phys %x\n", 1071 rpb->rpb_restart, rpb->rpb_restart_pv, rpb->rpb_vptb, my_rpb, 1072 KSEG_TO_PHYS(my_rpb)); 1073 1074 cServe(KSEG_TO_PHYS(palJToSlave), (ulong)rpb->rpb_restart, 1075 CSERVE_K_JTOPAL, rpb->rpb_restart_pv, rpb->rpb_vptb, 1076 KSEG_TO_PHYS(my_rpb)); 1077 1078 panic("SlaveCmd returned \n"); 1079} 1080 1081void 1082SlaveLoop(int cpu) 1083{ 1084 int size = ROUNDUP128(sizeof(struct rpb_percpu)); 1085 struct rpb_percpu *my_rpb = (struct rpb_percpu*) 1086 ((ulong)rpb_percpu + size * cpu); 1087 1088 if (cpu == 0) { 1089 panic("CPU�0 entering slaveLoop. Reenetering the console. HOSED\n"); 1090 } else { 1091 printf_lock("Entering slaveloop for cpu %d my_rpb=%x\n", cpu, my_rpb); 1092 } 1093 1094 // swap the processors context to the one in the 1095 // rpb_percpu struct very carefully (i.e. no stack usage) 1096 // so that linux knows which processor ends up in __smp_callin 1097 // and we don't trash any data is the process 1098 SlaveSpin(cpu, my_rpb, &my_rpb->rpb_iccb.iccb_rxlen); 1099} 1100