iokit/Kernel/IOHibernateRestoreKernel.c

   1 /*
   2  * Copyright (c) 2004-2006 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28
  29 #include <stdint.h>
  30 #include <mach/mach_types.h>
  31 #include <mach/vm_param.h>
  32 #include <IOKit/IOHibernatePrivate.h>
  33 #include <IOKit/IOLib.h>
  34 #include <pexpert/boot.h>
  35 #include <crypto/aes.h>
  36 #include <libkern/libkern.h>
  37
  38 #include "WKdm.h"
  39 #include "IOHibernateInternal.h"
  40
  41 /*
  42 This code is linked into the kernel but part of the "__HIB" section, which means
  43 its used by code running in the special context of restoring the kernel text and data
  44 from the hibernation image read by the booter. hibernate_kernel_entrypoint() and everything
  45 it calls or references needs to be careful to only touch memory also in the "__HIB" section.
  46 */
  47
  48 uint32_t gIOHibernateState;
  49
  50 uint32_t gIOHibernateDebugFlags;
  51
  52 static IOHibernateImageHeader _hibernateHeader;
  53 IOHibernateImageHeader * gIOHibernateCurrentHeader = &_hibernateHeader;
  54
  55 static hibernate_graphics_t _hibernateGraphics;
  56 hibernate_graphics_t * gIOHibernateGraphicsInfo = &_hibernateGraphics;
  57
  58 static hibernate_cryptwakevars_t _cryptWakeVars;
  59 hibernate_cryptwakevars_t * gIOHibernateCryptWakeVars = &_cryptWakeVars;
  60
  61 vm_offset_t gIOHibernateWakeMap;            // ppnum
  62 vm_size_t   gIOHibernateWakeMapSize;
  63
  64
  65 #if CONFIG_SLEEP
  66 #if defined(__i386__) || defined(__x86_64__)
  67 extern void acpi_wake_prot_entry(void);
  68 #endif
  69 #endif
  70
  71 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
  72
  73 #if defined(__i386__) || defined(__x86_64__)
  74
  75 #define DBGLOG  1
  76
  77 #include <architecture/i386/pio.h>
  78
  79 /* standard port addresses */
  80 enum {
  81     COM1_PORT_ADDR = 0x3f8,
  82     COM2_PORT_ADDR = 0x2f8
  83 };
  84
  85 /* UART register offsets */
  86 enum {
  87     UART_RBR = 0,  /* receive buffer Register   (R) */
  88     UART_THR = 0,  /* transmit holding register (W) */
  89     UART_DLL = 0,  /* DLAB = 1, divisor latch (LSB) */
  90     UART_IER = 1,  /* interrupt enable register     */
  91     UART_DLM = 1,  /* DLAB = 1, divisor latch (MSB) */
  92     UART_IIR = 2,  /* interrupt ident register (R)  */
  93     UART_FCR = 2,  /* fifo control register (W)     */
  94     UART_LCR = 3,  /* line control register         */
  95     UART_MCR = 4,  /* modem control register        */
  96     UART_LSR = 5,  /* line status register          */
  97     UART_MSR = 6,  /* modem status register         */
  98     UART_SCR = 7   /* scratch register              */
  99 };
 100
 101 enum {
 102     UART_LCR_8BITS = 0x03,
 103     UART_LCR_DLAB  = 0x80
 104 };
 105
 106 enum {
 107     UART_MCR_DTR   = 0x01,
 108     UART_MCR_RTS   = 0x02,
 109     UART_MCR_OUT1  = 0x04,
 110     UART_MCR_OUT2  = 0x08,
 111     UART_MCR_LOOP  = 0x10
 112 };
 113
 114 enum {
 115     UART_LSR_DR    = 0x01,
 116     UART_LSR_OE    = 0x02,
 117     UART_LSR_PE    = 0x04,
 118     UART_LSR_FE    = 0x08,
 119     UART_LSR_THRE  = 0x20
 120 };
 121
 122 static void uart_putc(char c)
 123 {
 124     while (!(inb(COM1_PORT_ADDR + UART_LSR) & UART_LSR_THRE))
 125         {}
 126     outb(COM1_PORT_ADDR + UART_THR, c);
 127 }
 128
 129 static int debug_probe( void )
 130 {
 131     /* Verify that the Scratch Register is accessible */
 132     outb(COM1_PORT_ADDR + UART_SCR, 0x5a);
 133     if (inb(COM1_PORT_ADDR + UART_SCR) != 0x5a) return false;
 134     outb(COM1_PORT_ADDR + UART_SCR, 0xa5);
 135     if (inb(COM1_PORT_ADDR + UART_SCR) != 0xa5) return false;
 136     uart_putc('\n');
 137     return true;
 138 }
 139
 140 static void uart_puthex(uint64_t num)
 141 {
 142     int bit;
 143     char c;
 144     bool leading = true;
 145
 146     for (bit = 60; bit >= 0; bit -= 4)
 147     {
 148         c = 0xf & (num >> bit);
 149         if (c)
 150             leading = false;
 151         else if (leading)
 152             continue;
 153         if (c <= 9)
 154             c += '0';
 155         else
 156             c+= 'a' - 10;
 157         uart_putc(c);
 158     }
 159 }
 160
 161 static void debug_code(uint32_t code, uint64_t value)
 162 {
 163     int bit;
 164     char c;
 165
 166     if (!(kIOHibernateDebugRestoreLogs & gIOHibernateDebugFlags))
 167         return;
 168
 169     for (bit = 24; bit >= 0; bit -= 8)
 170     {
 171         c = 0xFF & (code >> bit);
 172         if (c)
 173             uart_putc(c);
 174     }
 175     uart_putc('=');
 176     uart_puthex(value);
 177     uart_putc('\n');
 178     uart_putc('\r');
 179 }
 180
 181 #endif /* defined(__i386__) || defined(__x86_64__) */
 182
 183 #if !defined(DBGLOG)
 184 #define debug_probe()       (false)
 185 #define debug_code(c, v)    {}
 186 #endif
 187
 188 enum
 189 {
 190     kIOHibernateRestoreCodeImageStart       = 'imgS',
 191     kIOHibernateRestoreCodeImageEnd         = 'imgE',
 192     kIOHibernateRestoreCodePageIndexStart   = 'pgiS',
 193     kIOHibernateRestoreCodePageIndexEnd     = 'pgiE',
 194     kIOHibernateRestoreCodeMapStart         = 'mapS',
 195     kIOHibernateRestoreCodeMapEnd           = 'mapE',
 196     kIOHibernateRestoreCodeWakeMapSize      = 'wkms',
 197     kIOHibernateRestoreCodeConflictPage     = 'cfpg',
 198     kIOHibernateRestoreCodeConflictSource   = 'cfsr',
 199     kIOHibernateRestoreCodeNoMemory         = 'nomm'
 200 };
 201
 202 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 203
 204
 205 static void fatal(void)
 206 {
 207 #if defined(__i386__) || defined(__x86_64__)
 208     outb(0xcf9, 6);
 209 #else
 210     while (true) {}
 211 #endif
 212 }
 213
 214 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 215
 216 uint32_t
 217 hibernate_sum_page(uint8_t *buf, uint32_t ppnum)
 218 {
 219     return (((uint32_t *)buf)[((PAGE_SIZE >> 2) - 1) & ppnum]);
 220 }
 221
 222 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 223
 224 static hibernate_bitmap_t *
 225 hibernate_page_bitmap(hibernate_page_list_t * list, uint32_t page)
 226 {
 227     uint32_t             bank;
 228     hibernate_bitmap_t * bitmap = &list->bank_bitmap[0];
 229
 230     for (bank = 0; bank < list->bank_count; bank++)
 231     {
 232         if ((page >= bitmap->first_page) && (page <= bitmap->last_page))
 233             break;
 234         bitmap = (hibernate_bitmap_t *) &bitmap->bitmap[bitmap->bitmapwords];
 235     }
 236     if (bank == list->bank_count)
 237         bitmap = NULL;
 238
 239     return (bitmap);
 240 }
 241
 242 hibernate_bitmap_t *
 243 hibernate_page_bitmap_pin(hibernate_page_list_t * list, uint32_t * pPage)
 244 {
 245     uint32_t             bank, page = *pPage;
 246     hibernate_bitmap_t * bitmap = &list->bank_bitmap[0];
 247
 248     for (bank = 0; bank < list->bank_count; bank++)
 249     {
 250         if (page <= bitmap->first_page)
 251         {
 252             *pPage = bitmap->first_page;
 253             break;
 254         }
 255         if (page <= bitmap->last_page)
 256             break;
 257         bitmap = (hibernate_bitmap_t *) &bitmap->bitmap[bitmap->bitmapwords];
 258     }
 259     if (bank == list->bank_count)
 260         bitmap = NULL;
 261
 262     return (bitmap);
 263 }
 264
 265 void
 266 hibernate_page_bitset(hibernate_page_list_t * list, boolean_t set, uint32_t page)
 267 {
 268     hibernate_bitmap_t * bitmap;
 269
 270     bitmap = hibernate_page_bitmap(list, page);
 271     if (bitmap)
 272     {
 273         page -= bitmap->first_page;
 274         if (set)
 275             bitmap->bitmap[page >> 5] |= (0x80000000 >> (page & 31));
 276             //setbit(page - bitmap->first_page, (int *) &bitmap->bitmap[0]);
 277         else
 278             bitmap->bitmap[page >> 5] &= ~(0x80000000 >> (page & 31));
 279             //clrbit(page - bitmap->first_page, (int *) &bitmap->bitmap[0]);
 280     }
 281 }
 282
 283 boolean_t
 284 hibernate_page_bittst(hibernate_page_list_t * list, uint32_t page)
 285 {
 286     boolean_t            result = TRUE;
 287     hibernate_bitmap_t * bitmap;
 288
 289     bitmap = hibernate_page_bitmap(list, page);
 290     if (bitmap)
 291     {
 292         page -= bitmap->first_page;
 293         result = (0 != (bitmap->bitmap[page >> 5] & (0x80000000 >> (page & 31))));
 294     }
 295     return (result);
 296 }
 297
 298 // count bits clear or set (set == TRUE) starting at page.
 299 uint32_t
 300 hibernate_page_bitmap_count(hibernate_bitmap_t * bitmap, uint32_t set, uint32_t page)
 301 {
 302     uint32_t index, bit, bits;
 303     uint32_t count;
 304
 305     count = 0;
 306
 307     index = (page - bitmap->first_page) >> 5;
 308     bit = (page - bitmap->first_page) & 31;
 309
 310     bits = bitmap->bitmap[index];
 311     if (set)
 312         bits = ~bits;
 313     bits = (bits << bit);
 314     if (bits)
 315         count += __builtin_clz(bits);
 316     else
 317     {
 318         count += 32 - bit;
 319         while (++index < bitmap->bitmapwords)
 320         {
 321             bits = bitmap->bitmap[index];
 322             if (set)
 323                 bits = ~bits;
 324             if (bits)
 325             {
 326                 count += __builtin_clz(bits);
 327                 break;
 328             }
 329             count += 32;
 330         }
 331     }
 332
 333     return (count);
 334 }
 335
 336 static vm_offset_t
 337 hibernate_page_list_grab(hibernate_page_list_t * list, uint32_t * pNextFree)
 338 {
 339     uint32_t             nextFree = *pNextFree;
 340     uint32_t             nextFreeInBank;
 341     hibernate_bitmap_t * bitmap;
 342
 343     nextFreeInBank = nextFree + 1;
 344     while ((bitmap = hibernate_page_bitmap_pin(list, &nextFreeInBank)))
 345     {
 346         nextFreeInBank += hibernate_page_bitmap_count(bitmap, FALSE, nextFreeInBank);
 347         if (nextFreeInBank <= bitmap->last_page)
 348         {
 349             *pNextFree = nextFreeInBank;
 350             break;
 351         }
 352     }
 353
 354     if (!bitmap)
 355     {
 356         debug_code(kIOHibernateRestoreCodeNoMemory, nextFree);
 357         fatal();
 358         nextFree = 0;
 359     }
 360
 361     return (nextFree);
 362 }
 363
 364 static uint32_t
 365 store_one_page(uint32_t procFlags, uint32_t * src, uint32_t compressedSize,
 366                 uint32_t * buffer, uint32_t ppnum)
 367 {
 368     uint64_t dst;
 369     uint32_t sum;
 370
 371     dst = ptoa_64(ppnum);
 372     if (ppnum < 0x00100000)
 373         buffer = (uint32_t *) (uintptr_t) dst;
 374
 375     if (compressedSize != PAGE_SIZE)
 376     {
 377         WKdm_decompress((WK_word*) src, (WK_word*) buffer, PAGE_SIZE >> 2);
 378         src = buffer;
 379     }
 380
 381     sum = hibernate_sum_page((uint8_t *) src, ppnum);
 382
 383     if (((uint64_t) (uintptr_t) src) == dst)
 384         src = 0;
 385
 386     hibernate_restore_phys_page((uint64_t) (uintptr_t) src, dst, PAGE_SIZE, procFlags);
 387
 388     return (sum);
 389 }
 390
 391 // used only for small struct copies
 392 static void
 393 bcopy_internal(const void *src, void *dst, uint32_t len)
 394 {
 395     const char *s = src;
 396     char       *d = dst;
 397     uint32_t   idx = 0;
 398
 399     while (idx < len)
 400     {
 401         d[idx] = s[idx];
 402         idx++;
 403     }
 404 }
 405
 406 #define C_ASSERT(e) typedef char    __C_ASSERT__[(e) ? 1 : -1]
 407
 408 long
 409 hibernate_kernel_entrypoint(IOHibernateImageHeader * header,
 410                             void * p2, void * p3, void * p4)
 411 {
 412     uint32_t idx;
 413     uint32_t * src;
 414     uint32_t * buffer;
 415     uint32_t * pageIndexSource;
 416     hibernate_page_list_t * map;
 417     uint32_t count;
 418     uint32_t ppnum;
 419     uint32_t page;
 420     uint32_t conflictCount;
 421     uint32_t compressedSize;
 422     uint32_t uncompressedPages;
 423     uint32_t copyPageListHead;
 424     uint32_t * copyPageList;
 425     uint32_t copyPageIndex;
 426     uint32_t sum;
 427     uint32_t nextFree;
 428     uint32_t lastImagePage;
 429     uint32_t lastMapPage;
 430     uint32_t lastPageIndexPage;
 431
 432     C_ASSERT(sizeof(IOHibernateImageHeader) == 512);
 433
 434     if ((kIOHibernateDebugRestoreLogs & gIOHibernateDebugFlags) && !debug_probe())
 435         gIOHibernateDebugFlags &= ~kIOHibernateDebugRestoreLogs;
 436
 437     debug_code(kIOHibernateRestoreCodeImageStart, (uintptr_t) header);
 438
 439     bcopy_internal(header,
 440                 gIOHibernateCurrentHeader,
 441                 sizeof(IOHibernateImageHeader));
 442
 443     if (!p2)
 444     {
 445         count = header->graphicsInfoOffset;
 446         if (count)
 447             p2 = (void *)(((uintptr_t) header) - count);
 448     }
 449     if (p2)
 450         bcopy_internal(p2,
 451                 gIOHibernateGraphicsInfo,
 452                 sizeof(hibernate_graphics_t));
 453     else
 454         gIOHibernateGraphicsInfo->physicalAddress = gIOHibernateGraphicsInfo->depth = 0;
 455
 456     if (!p3)
 457     {
 458         count = header->cryptVarsOffset;
 459         if (count)
 460             p3 = (void *)(((uintptr_t) header) - count);
 461     }
 462     if (p3)
 463         bcopy_internal(p3,
 464                 gIOHibernateCryptWakeVars,
 465                 sizeof(hibernate_cryptwakevars_t));
 466
 467     src = (uint32_t *)
 468                 (((uintptr_t) &header->fileExtentMap[0])
 469                             + header->fileExtentMapSize
 470                             + ptoa_32(header->restore1PageCount));
 471
 472     if (header->previewSize)
 473     {
 474         pageIndexSource = src;
 475         map = (hibernate_page_list_t *)(((uintptr_t) pageIndexSource) + header->previewSize);
 476         src = (uint32_t *) (((uintptr_t) pageIndexSource) + header->previewPageListSize);
 477     }
 478     else
 479     {
 480         pageIndexSource = 0;
 481         map = (hibernate_page_list_t *) src;
 482         src = (uint32_t *) (((uintptr_t) map) + header->bitmapSize);
 483     }
 484
 485     lastPageIndexPage = atop_32((uintptr_t) src);
 486
 487     lastImagePage = atop_32(((uintptr_t) header) + header->image1Size);
 488
 489     lastMapPage = atop_32(((uintptr_t) map) + header->bitmapSize);
 490
 491     debug_code(kIOHibernateRestoreCodeImageEnd,       ptoa_64(lastImagePage));
 492     debug_code(kIOHibernateRestoreCodePageIndexStart, (uintptr_t) pageIndexSource);
 493     debug_code(kIOHibernateRestoreCodePageIndexEnd,   ptoa_64(lastPageIndexPage));
 494     debug_code(kIOHibernateRestoreCodeMapStart,       (uintptr_t) map);
 495     debug_code(kIOHibernateRestoreCodeMapEnd,         ptoa_64(lastMapPage));
 496
 497     // knock all the image pages to be used out of free map
 498     for (ppnum = atop_32((uintptr_t) header); ppnum <= lastImagePage; ppnum++)
 499     {
 500         hibernate_page_bitset(map, FALSE, ppnum);
 501     }
 502
 503     nextFree = 0;
 504     hibernate_page_list_grab(map, &nextFree);
 505     buffer = (uint32_t *) (uintptr_t) ptoa_32(hibernate_page_list_grab(map, &nextFree));
 506
 507     if (header->memoryMapSize && (count = header->memoryMapOffset))
 508     {
 509         p4 = (void *)(((uintptr_t) header) - count);
 510         gIOHibernateWakeMap     = hibernate_page_list_grab(map, &nextFree);
 511         gIOHibernateWakeMapSize = header->memoryMapSize;
 512         debug_code(kIOHibernateRestoreCodeWakeMapSize, gIOHibernateWakeMapSize);
 513         if (gIOHibernateWakeMapSize > PAGE_SIZE)
 514             fatal();
 515         bcopy_internal(p4, (void  *) (uintptr_t) ptoa_32(gIOHibernateWakeMap), gIOHibernateWakeMapSize);
 516     }
 517     else
 518         gIOHibernateWakeMapSize = 0;
 519
 520     sum = gIOHibernateCurrentHeader->actualRestore1Sum;
 521     gIOHibernateCurrentHeader->diag[0] = (uint32_t)(uintptr_t) header;
 522     gIOHibernateCurrentHeader->diag[1] = sum;
 523
 524     uncompressedPages = 0;
 525     conflictCount     = 0;
 526     copyPageListHead  = 0;
 527     copyPageList      = 0;
 528     copyPageIndex     = PAGE_SIZE >> 2;
 529
 530     compressedSize    = PAGE_SIZE;
 531
 532     while (1)
 533     {
 534         if (pageIndexSource)
 535         {
 536             ppnum = pageIndexSource[0];
 537             count = pageIndexSource[1];
 538             pageIndexSource += 2;
 539             if (!count)
 540             {
 541                 pageIndexSource = 0;
 542                 src =  (uint32_t *) (((uintptr_t) map) + gIOHibernateCurrentHeader->bitmapSize);
 543                 ppnum = src[0];
 544                 count = src[1];
 545                 src += 2;
 546             }
 547         }
 548         else
 549         {
 550             ppnum = src[0];
 551             count = src[1];
 552             if (!count)
 553                 break;
 554             src += 2;
 555         }
 556
 557         for (page = 0; page < count; page++, ppnum++)
 558         {
 559             uint32_t tag;
 560             int conflicts;
 561
 562             if (!pageIndexSource)
 563             {
 564                 tag = *src++;
 565                 compressedSize = kIOHibernateTagLength & tag;
 566             }
 567
 568             conflicts = (((ppnum >= atop_32((uintptr_t) map)) && (ppnum <= lastMapPage))
 569                       || ((ppnum >= atop_32((uintptr_t) src)) && (ppnum <= lastImagePage)));
 570
 571             if (pageIndexSource)
 572                 conflicts |= ((ppnum >= atop_32((uintptr_t) pageIndexSource)) && (ppnum <= lastPageIndexPage));
 573
 574             if (!conflicts)
 575             {
 576                 if (compressedSize)
 577                     sum += store_one_page(gIOHibernateCurrentHeader->processorFlags,
 578                                             src, compressedSize, buffer, ppnum);
 579                 uncompressedPages++;
 580             }
 581             else
 582             {
 583                 uint32_t   bufferPage;
 584                 uint32_t * dst;
 585
 586 //              debug_code(kIOHibernateRestoreCodeConflictPage,   ppnum);
 587 //              debug_code(kIOHibernateRestoreCodeConflictSource, (uintptr_t) src);
 588
 589                 conflictCount++;
 590
 591                 // alloc new buffer page
 592                 bufferPage = hibernate_page_list_grab(map, &nextFree);
 593
 594                 if (copyPageIndex > ((PAGE_SIZE >> 2) - 3))
 595                 {
 596                     // alloc new copy list page
 597                     uint32_t pageListPage = hibernate_page_list_grab(map, &nextFree);
 598                     // link to current
 599                     if (copyPageList)
 600                         copyPageList[1] = pageListPage;
 601                     else
 602                         copyPageListHead = pageListPage;
 603                     copyPageList = (uint32_t *) (uintptr_t) ptoa_32(pageListPage);
 604                     copyPageList[1] = 0;
 605                     copyPageIndex = 2;
 606                 }
 607
 608                 copyPageList[copyPageIndex++] = ppnum;
 609                 copyPageList[copyPageIndex++] = bufferPage;
 610                 copyPageList[copyPageIndex++] = compressedSize;
 611                 copyPageList[0] = copyPageIndex;
 612
 613                 dst = (uint32_t *) (uintptr_t) ptoa_32(bufferPage);
 614                 for (idx = 0; idx < ((compressedSize + 3) >> 2); idx++)
 615                     dst[idx] = src[idx];
 616             }
 617             src += ((compressedSize + 3) >> 2);
 618         }
 619     }
 620
 621     // -- copy back conflicts
 622
 623     copyPageList = (uint32_t *)(uintptr_t) ptoa_32(copyPageListHead);
 624     while (copyPageList)
 625     {
 626         for (copyPageIndex = 2; copyPageIndex < copyPageList[0]; copyPageIndex += 3)
 627         {
 628             ppnum          =              copyPageList[copyPageIndex + 0];
 629             src            = (uint32_t *) (uintptr_t) ptoa_32(copyPageList[copyPageIndex + 1]);
 630             compressedSize =              copyPageList[copyPageIndex + 2];
 631
 632             sum += store_one_page(gIOHibernateCurrentHeader->processorFlags,
 633                                     src, compressedSize, buffer, ppnum);
 634             uncompressedPages++;
 635         }
 636         copyPageList = (uint32_t *) (uintptr_t) ptoa_32(copyPageList[1]);
 637     }
 638
 639     // -- image has been destroyed...
 640
 641     gIOHibernateCurrentHeader->actualImage1Sum         = sum;
 642     gIOHibernateCurrentHeader->actualUncompressedPages = uncompressedPages;
 643     gIOHibernateCurrentHeader->conflictCount           = conflictCount;
 644     gIOHibernateCurrentHeader->nextFree                = nextFree;
 645
 646     gIOHibernateState = kIOHibernateStateWakingFromHibernate;
 647
 648 #if CONFIG_SLEEP
 649 #if defined(__ppc__)
 650     typedef void (*ResetProc)(void);
 651     ResetProc proc;
 652     proc = (ResetProc) 0x100;
 653     __asm__ volatile("ori 0, 0, 0" : : );
 654     proc();
 655 #elif defined(__i386__) || defined(__x86_64__)
 656     typedef void (*ResetProc)(void);
 657     ResetProc proc;
 658     proc = (ResetProc) acpi_wake_prot_entry;
 659     // flush caches
 660     __asm__("wbinvd");
 661     proc();
 662 #else
 663 // implement me
 664 #endif
 665 #endif
 666
 667     return -1;
 668 }