![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to pmm.c CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [Qemu by Fabrice Bellard] / qemu / roms / seabios / src|
Return to pmm.c CVS log | Up to [Qemu by Fabrice Bellard] / qemu / roms / seabios / src |
1.1 root 1: // Post memory manager (PMM) calls
2: //
3: // Copyright (C) 2009 Kevin O'Connor <[email protected]>
4: //
5: // This file may be distributed under the terms of the GNU LGPLv3 license.
6:
7: #include "util.h" // checksum
8: #include "config.h" // BUILD_BIOS_ADDR
1.1.1.3 ! root 9: #include "memmap.h" // struct e820entry
1.1 root 10: #include "farptr.h" // GET_FARVAR
11: #include "biosvar.h" // GET_BDA
12:
13:
1.1.1.2 root 14: #if MODESEGMENT
1.1 root 15: // The 16bit pmm entry points runs in "big real" mode, and can
16: // therefore read/write to the 32bit malloc variables.
1.1.1.2 root 17: #define GET_PMMVAR(var) ({ \
18: SET_SEG(ES, 0); \
19: __GET_VAR("addr32 ", ES, (var)); })
20: #define SET_PMMVAR(var, val) do { \
21: SET_SEG(ES, 0); \
22: __SET_VAR("addr32 ", ES, (var), (val)); \
23: } while (0)
1.1 root 24: #else
25: #define GET_PMMVAR(var) (var)
26: #define SET_PMMVAR(var, val) do { (var) = (val); } while (0)
27: #endif
28:
1.1.1.3 ! root 29: // Information on a reserved area.
! 30: struct allocinfo_s {
! 31: struct allocinfo_s *next, **pprev;
! 32: void *data, *dataend, *allocend;
! 33: };
! 34:
! 35: // Information on a tracked memory allocation.
! 36: struct allocdetail_s {
! 37: struct allocinfo_s detailinfo;
! 38: struct allocinfo_s datainfo;
! 39: u32 handle;
! 40: };
! 41:
! 42: // The various memory zones.
1.1 root 43: struct zone_s {
1.1.1.3 ! root 44: struct allocinfo_s *info;
1.1 root 45: };
46:
1.1.1.3 ! root 47: struct zone_s ZoneLow VAR32FLATVISIBLE;
! 48: struct zone_s ZoneHigh VAR32FLATVISIBLE;
1.1.1.2 root 49: struct zone_s ZoneFSeg VAR32FLATVISIBLE;
1.1.1.3 ! root 50: struct zone_s ZoneTmpLow VAR32FLATVISIBLE;
! 51: struct zone_s ZoneTmpHigh VAR32FLATVISIBLE;
1.1 root 52:
1.1.1.2 root 53: struct zone_s *Zones[] VAR32FLATVISIBLE = {
1.1 root 54: &ZoneTmpLow, &ZoneLow, &ZoneFSeg, &ZoneTmpHigh, &ZoneHigh
55: };
56:
57:
58: /****************************************************************
1.1.1.3 ! root 59: * low-level memory reservations
! 60: ****************************************************************/
! 61:
! 62: // Find and reserve space from a given zone
! 63: static void *
! 64: allocSpace(struct zone_s *zone, u32 size, u32 align, struct allocinfo_s *fill)
! 65: {
! 66: struct allocinfo_s *info;
! 67: for (info = GET_PMMVAR(zone->info); info; info = GET_PMMVAR(info->next)) {
! 68: void *dataend = GET_PMMVAR(info->dataend);
! 69: void *allocend = GET_PMMVAR(info->allocend);
! 70: void *newallocend = (void*)ALIGN_DOWN((u32)allocend - size, align);
! 71: if (newallocend >= dataend && newallocend <= allocend) {
! 72: // Found space - now reserve it.
! 73: struct allocinfo_s **pprev = GET_PMMVAR(info->pprev);
! 74: if (!fill)
! 75: fill = newallocend;
! 76: SET_PMMVAR(fill->next, info);
! 77: SET_PMMVAR(fill->pprev, pprev);
! 78: SET_PMMVAR(fill->data, newallocend);
! 79: SET_PMMVAR(fill->dataend, newallocend + size);
! 80: SET_PMMVAR(fill->allocend, allocend);
! 81:
! 82: SET_PMMVAR(info->allocend, newallocend);
! 83: SET_PMMVAR(info->pprev, &fill->next);
! 84: SET_PMMVAR(*pprev, fill);
! 85: return newallocend;
! 86: }
! 87: }
! 88: return NULL;
! 89: }
! 90:
! 91: // Release space allocated with allocSpace()
! 92: static void
! 93: freeSpace(struct allocinfo_s *info)
! 94: {
! 95: struct allocinfo_s *next = GET_PMMVAR(info->next);
! 96: struct allocinfo_s **pprev = GET_PMMVAR(info->pprev);
! 97: SET_PMMVAR(*pprev, next);
! 98: if (next) {
! 99: if (GET_PMMVAR(next->allocend) == GET_PMMVAR(info->data))
! 100: SET_PMMVAR(next->allocend, GET_PMMVAR(info->allocend));
! 101: SET_PMMVAR(next->pprev, pprev);
! 102: }
! 103: }
! 104:
! 105: // Add new memory to a zone
! 106: static void
! 107: addSpace(struct zone_s *zone, void *start, void *end)
! 108: {
! 109: // Find position to add space
! 110: struct allocinfo_s **pprev = &zone->info, *info;
! 111: for (;;) {
! 112: info = GET_PMMVAR(*pprev);
! 113: if (!info || GET_PMMVAR(info->data) < start)
! 114: break;
! 115: pprev = &info->next;
! 116: }
! 117:
! 118: // Add space using temporary allocation info.
! 119: struct allocdetail_s tempdetail;
! 120: tempdetail.datainfo.next = info;
! 121: tempdetail.datainfo.pprev = pprev;
! 122: tempdetail.datainfo.data = tempdetail.datainfo.dataend = start;
! 123: tempdetail.datainfo.allocend = end;
! 124: struct allocdetail_s *tempdetailp = MAKE_FLATPTR(GET_SEG(SS), &tempdetail);
! 125: SET_PMMVAR(*pprev, &tempdetailp->datainfo);
! 126: if (info)
! 127: SET_PMMVAR(info->pprev, &tempdetailp->datainfo.next);
! 128:
! 129: // Allocate final allocation info.
! 130: struct allocdetail_s *detail = allocSpace(
! 131: &ZoneTmpHigh, sizeof(*detail), MALLOC_MIN_ALIGN, NULL);
! 132: if (!detail) {
! 133: detail = allocSpace(&ZoneTmpLow, sizeof(*detail)
! 134: , MALLOC_MIN_ALIGN, NULL);
! 135: if (!detail) {
! 136: SET_PMMVAR(*tempdetail.datainfo.pprev, tempdetail.datainfo.next);
! 137: if (tempdetail.datainfo.next)
! 138: SET_PMMVAR(tempdetail.datainfo.next->pprev
! 139: , tempdetail.datainfo.pprev);
! 140: warn_noalloc();
! 141: return;
! 142: }
! 143: }
! 144:
! 145: // Replace temp alloc space with final alloc space
! 146: memcpy_fl(&detail->datainfo, &tempdetailp->datainfo
! 147: , sizeof(detail->datainfo));
! 148: SET_PMMVAR(detail->handle, PMM_DEFAULT_HANDLE);
! 149:
! 150: SET_PMMVAR(*tempdetail.datainfo.pprev, &detail->datainfo);
! 151: if (tempdetail.datainfo.next)
! 152: SET_PMMVAR(tempdetail.datainfo.next->pprev, &detail->datainfo.next);
! 153: }
! 154:
! 155: // Search all zones for an allocation obtained from allocSpace()
! 156: static struct allocinfo_s *
! 157: findAlloc(void *data)
! 158: {
! 159: int i;
! 160: for (i=0; i<ARRAY_SIZE(Zones); i++) {
! 161: struct zone_s *zone = GET_PMMVAR(Zones[i]);
! 162: struct allocinfo_s *info;
! 163: for (info = GET_PMMVAR(zone->info); info; info = GET_PMMVAR(info->next))
! 164: if (GET_PMMVAR(info->data) == data)
! 165: return info;
! 166: }
! 167: return NULL;
! 168: }
! 169:
! 170: // Return the last sentinal node of a zone
! 171: static struct allocinfo_s *
! 172: findLast(struct zone_s *zone)
! 173: {
! 174: struct allocinfo_s *info = GET_PMMVAR(zone->info);
! 175: if (!info)
! 176: return NULL;
! 177: for (;;) {
! 178: struct allocinfo_s *next = GET_PMMVAR(info->next);
! 179: if (!next)
! 180: return info;
! 181: info = next;
! 182: }
! 183: }
! 184:
! 185:
! 186: /****************************************************************
! 187: * Setup
! 188: ****************************************************************/
! 189:
! 190: void
! 191: malloc_setup(void)
! 192: {
! 193: ASSERT32FLAT();
! 194: dprintf(3, "malloc setup\n");
! 195:
! 196: ZoneLow.info = ZoneHigh.info = ZoneFSeg.info = NULL;
! 197: ZoneTmpLow.info = ZoneTmpHigh.info = NULL;
! 198:
! 199: // Clear memory in 0xf0000 area.
! 200: extern u8 code32flat_start[];
! 201: if ((u32)code32flat_start > BUILD_BIOS_ADDR)
! 202: // Clear unused parts of f-segment
! 203: memset((void*)BUILD_BIOS_ADDR, 0
! 204: , (u32)code32flat_start - BUILD_BIOS_ADDR);
! 205: memset(BiosTableSpace, 0, CONFIG_MAX_BIOSTABLE);
! 206:
! 207: // Populate temp high ram
! 208: u32 highram = 0;
! 209: int i;
! 210: for (i=e820_count-1; i>=0; i--) {
! 211: struct e820entry *en = &e820_list[i];
! 212: u64 end = en->start + en->size;
! 213: if (end < 1024*1024)
! 214: break;
! 215: if (en->type != E820_RAM || end > 0xffffffff)
! 216: continue;
! 217: u32 s = en->start, e = end;
! 218: if (!highram) {
! 219: u32 newe = ALIGN_DOWN(e - CONFIG_MAX_HIGHTABLE, MALLOC_MIN_ALIGN);
! 220: if (newe <= e && newe >= s) {
! 221: highram = newe;
! 222: e = newe;
! 223: }
! 224: }
! 225: addSpace(&ZoneTmpHigh, (void*)s, (void*)e);
! 226: }
! 227:
! 228: // Populate other regions
! 229: addSpace(&ZoneTmpLow, (void*)BUILD_STACK_ADDR, (void*)BUILD_EBDA_MINIMUM);
! 230: addSpace(&ZoneFSeg, BiosTableSpace, &BiosTableSpace[CONFIG_MAX_BIOSTABLE]);
! 231: addSpace(&ZoneLow, (void*)BUILD_LOWRAM_END, (void*)BUILD_LOWRAM_END);
! 232: if (highram) {
! 233: addSpace(&ZoneHigh, (void*)highram
! 234: , (void*)highram + CONFIG_MAX_HIGHTABLE);
! 235: add_e820(highram, CONFIG_MAX_HIGHTABLE, E820_RESERVED);
! 236: }
! 237: }
! 238:
! 239: void
! 240: malloc_finalize(void)
! 241: {
! 242: dprintf(3, "malloc finalize\n");
! 243:
! 244: // Reserve more low-mem if needed.
! 245: u32 endlow = GET_BDA(mem_size_kb)*1024;
! 246: add_e820(endlow, BUILD_LOWRAM_END-endlow, E820_RESERVED);
! 247:
! 248: // Give back unused high ram.
! 249: struct allocinfo_s *info = findLast(&ZoneHigh);
! 250: if (info) {
! 251: u32 giveback = ALIGN_DOWN(info->allocend - info->dataend, PAGE_SIZE);
! 252: add_e820((u32)info->dataend, giveback, E820_RAM);
! 253: dprintf(1, "Returned %d bytes of ZoneHigh\n", giveback);
! 254: }
! 255:
! 256: // Clear low-memory allocations.
! 257: memset((void*)BUILD_STACK_ADDR, 0, BUILD_EBDA_MINIMUM - BUILD_STACK_ADDR);
! 258: }
! 259:
! 260:
! 261: /****************************************************************
1.1 root 262: * ebda movement
263: ****************************************************************/
264:
265: // Move ebda
266: static int
267: relocate_ebda(u32 newebda, u32 oldebda, u8 ebda_size)
268: {
269: u32 lowram = GET_BDA(mem_size_kb) * 1024;
270: if (oldebda != lowram)
271: // EBDA isn't at end of ram - give up.
272: return -1;
273:
1.1.1.3 ! root 274: // Do copy (this assumes memcpy copies forward - otherwise memmove
! 275: // is needed)
! 276: memcpy_fl((void*)newebda, (void*)oldebda, ebda_size * 1024);
1.1 root 277:
278: // Update indexes
279: dprintf(1, "ebda moved from %x to %x\n", oldebda, newebda);
280: SET_BDA(mem_size_kb, newebda / 1024);
281: SET_BDA(ebda_seg, FLATPTR_TO_SEG(newebda));
282: return 0;
283: }
284:
285: // Support expanding the ZoneLow dynamically.
286: static void
287: zonelow_expand(u32 size, u32 align)
288: {
1.1.1.3 ! root 289: struct allocinfo_s *info = findLast(&ZoneLow);
! 290: if (!info)
! 291: return;
! 292: u32 oldpos = (u32)GET_PMMVAR(info->allocend);
1.1 root 293: u32 newpos = ALIGN_DOWN(oldpos - size, align);
1.1.1.3 ! root 294: u32 bottom = (u32)GET_PMMVAR(info->dataend);
1.1 root 295: if (newpos >= bottom && newpos <= oldpos)
296: // Space already present.
297: return;
298: u16 ebda_seg = get_ebda_seg();
299: u32 ebda_pos = (u32)MAKE_FLATPTR(ebda_seg, 0);
300: u8 ebda_size = GET_EBDA2(ebda_seg, size);
301: u32 ebda_end = ebda_pos + ebda_size * 1024;
1.1.1.3 ! root 302: if (ebda_end != bottom)
1.1 root 303: // Something else is after ebda - can't use any existing space.
1.1.1.3 ! root 304: newpos = ALIGN_DOWN(ebda_end - size, align);
1.1 root 305: u32 newbottom = ALIGN_DOWN(newpos, 1024);
306: u32 newebda = ALIGN_DOWN(newbottom - ebda_size * 1024, 1024);
307: if (newebda < BUILD_EBDA_MINIMUM)
308: // Not enough space.
309: return;
310:
311: // Move ebda
312: int ret = relocate_ebda(newebda, ebda_pos, ebda_size);
313: if (ret)
314: return;
315:
316: // Update zone
1.1.1.3 ! root 317: if (ebda_end == bottom) {
! 318: SET_PMMVAR(info->data, (void*)newbottom);
! 319: SET_PMMVAR(info->dataend, (void*)newbottom);
! 320: } else
! 321: addSpace(&ZoneLow, (void*)newbottom, (void*)ebda_end);
1.1 root 322: }
323:
1.1.1.3 ! root 324: // Check if can expand the given zone to fulfill an allocation
1.1 root 325: static void *
1.1.1.3 ! root 326: allocExpandSpace(struct zone_s *zone, u32 size, u32 align
! 327: , struct allocinfo_s *fill)
1.1 root 328: {
1.1.1.3 ! root 329: void *data = allocSpace(zone, size, align, fill);
! 330: if (data || zone != &ZoneLow)
! 331: return data;
! 332:
! 333: // Make sure to not move ebda while an optionrom is running.
! 334: if (unlikely(wait_preempt())) {
! 335: data = allocSpace(zone, size, align, fill);
! 336: if (data)
! 337: return data;
1.1 root 338: }
339:
1.1.1.3 ! root 340: zonelow_expand(size, align);
! 341: return allocSpace(zone, size, align, fill);
1.1 root 342: }
343:
344:
345: /****************************************************************
346: * tracked memory allocations
347: ****************************************************************/
348:
349: // Allocate memory from the given zone and track it as a PMM allocation
1.1.1.3 ! root 350: void * __malloc
1.1 root 351: pmm_malloc(struct zone_s *zone, u32 handle, u32 size, u32 align)
352: {
1.1.1.3 ! root 353: if (!size)
! 354: return NULL;
! 355:
! 356: // Find and reserve space for bookkeeping.
! 357: struct allocdetail_s *detail = allocSpace(
! 358: &ZoneTmpHigh, sizeof(*detail), MALLOC_MIN_ALIGN, NULL);
! 359: if (!detail) {
! 360: detail = allocSpace(&ZoneTmpLow, sizeof(*detail)
! 361: , MALLOC_MIN_ALIGN, NULL);
! 362: if (!detail)
1.1 root 363: return NULL;
364: }
1.1.1.3 ! root 365:
! 366: // Find and reserve space for main allocation
! 367: void *data = allocExpandSpace(zone, size, align, &detail->datainfo);
! 368: if (!data) {
! 369: freeSpace(&detail->detailinfo);
1.1 root 370: return NULL;
371: }
1.1.1.3 ! root 372:
1.1 root 373: dprintf(8, "pmm_malloc zone=%p handle=%x size=%d align=%x"
1.1.1.3 ! root 374: " ret=%p (detail=%p)\n"
1.1 root 375: , zone, handle, size, align
1.1.1.3 ! root 376: , data, detail);
! 377: SET_PMMVAR(detail->handle, handle);
1.1 root 378:
1.1.1.3 ! root 379: return data;
1.1 root 380: }
381:
382: // Free a data block allocated with pmm_malloc
383: int
384: pmm_free(void *data)
385: {
1.1.1.3 ! root 386: struct allocinfo_s *info = findAlloc(data);
! 387: if (!info || data == (void*)info || data == GET_PMMVAR(info->dataend))
! 388: return -1;
! 389: struct allocdetail_s *detail = container_of(
! 390: info, struct allocdetail_s, datainfo);
! 391: dprintf(8, "pmm_free %p (detail=%p)\n", data, detail);
! 392: freeSpace(info);
! 393: freeSpace(&detail->detailinfo);
! 394: return 0;
1.1 root 395: }
396:
397: // Find the amount of free space in a given zone.
398: static u32
399: pmm_getspace(struct zone_s *zone)
400: {
401: // XXX - doesn't account for ZoneLow being able to grow.
1.1.1.3 ! root 402: // XXX - results not reliable when CONFIG_THREAD_OPTIONROMS
! 403: u32 maxspace = 0;
! 404: struct allocinfo_s *info;
! 405: for (info = GET_PMMVAR(zone->info); info; info = GET_PMMVAR(info->next)) {
! 406: u32 space = GET_PMMVAR(info->allocend) - GET_PMMVAR(info->dataend);
! 407: if (space > maxspace)
! 408: maxspace = space;
! 409: }
! 410:
1.1 root 411: if (zone != &ZoneTmpHigh && zone != &ZoneTmpLow)
1.1.1.3 ! root 412: return maxspace;
1.1 root 413: // Account for space needed for PMM tracking.
1.1.1.3 ! root 414: u32 reserve = ALIGN(sizeof(struct allocdetail_s), MALLOC_MIN_ALIGN);
! 415: if (maxspace <= reserve)
1.1 root 416: return 0;
1.1.1.3 ! root 417: return maxspace - reserve;
1.1 root 418: }
419:
420: // Find the data block allocated with pmm_malloc with a given handle.
421: static void *
422: pmm_find(u32 handle)
423: {
1.1.1.3 ! root 424: int i;
! 425: for (i=0; i<ARRAY_SIZE(Zones); i++) {
! 426: struct zone_s *zone = GET_PMMVAR(Zones[i]);
! 427: struct allocinfo_s *info;
! 428: for (info = GET_PMMVAR(zone->info); info
! 429: ; info = GET_PMMVAR(info->next)) {
! 430: if (GET_PMMVAR(info->data) != (void*)info)
! 431: continue;
! 432: struct allocdetail_s *detail = container_of(
! 433: info, struct allocdetail_s, detailinfo);
! 434: if (GET_PMMVAR(detail->handle) == handle)
! 435: return GET_PMMVAR(detail->datainfo.data);
! 436: }
1.1 root 437: }
1.1.1.3 ! root 438: return NULL;
1.1 root 439: }
440:
441:
442: /****************************************************************
443: * pmm interface
444: ****************************************************************/
445:
446: struct pmmheader {
447: u32 signature;
448: u8 version;
449: u8 length;
450: u8 checksum;
451: u16 entry_offset;
452: u16 entry_seg;
453: u8 reserved[5];
454: } PACKED;
455:
456: extern struct pmmheader PMMHEADER;
457:
458: #define PMM_SIGNATURE 0x4d4d5024 // $PMM
459:
460: #if CONFIG_PMM
461: struct pmmheader PMMHEADER __aligned(16) VAR16EXPORT = {
462: .version = 0x01,
463: .length = sizeof(PMMHEADER),
464: .entry_seg = SEG_BIOS,
465: };
466: #endif
467:
468: #define PMM_FUNCTION_NOT_SUPPORTED 0xffffffff
469:
470: // PMM - allocate
471: static u32
472: handle_pmm00(u16 *args)
473: {
474: u32 length = *(u32*)&args[1], handle = *(u32*)&args[3];
475: u16 flags = args[5];
476: dprintf(3, "pmm00: length=%x handle=%x flags=%x\n"
477: , length, handle, flags);
478: struct zone_s *lowzone = &ZoneTmpLow, *highzone = &ZoneTmpHigh;
479: if (flags & 8) {
480: // Permanent memory request.
481: lowzone = &ZoneLow;
482: highzone = &ZoneHigh;
483: }
484: if (!length) {
485: // Memory size request
486: switch (flags & 3) {
487: default:
488: case 0:
489: return 0;
490: case 1:
491: return pmm_getspace(lowzone);
492: case 2:
493: return pmm_getspace(highzone);
494: case 3: {
495: u32 spacelow = pmm_getspace(lowzone);
496: u32 spacehigh = pmm_getspace(highzone);
497: if (spacelow > spacehigh)
498: return spacelow;
499: return spacehigh;
500: }
501: }
502: }
503: u32 size = length * 16;
504: if ((s32)size <= 0)
505: return 0;
506: u32 align = MALLOC_MIN_ALIGN;
507: if (flags & 4) {
508: align = 1<<__ffs(size);
509: if (align < MALLOC_MIN_ALIGN)
510: align = MALLOC_MIN_ALIGN;
511: }
512: switch (flags & 3) {
513: default:
514: case 0:
515: return 0;
516: case 1:
517: return (u32)pmm_malloc(lowzone, handle, size, align);
518: case 2:
519: return (u32)pmm_malloc(highzone, handle, size, align);
520: case 3: {
521: void *data = pmm_malloc(lowzone, handle, size, align);
522: if (data)
523: return (u32)data;
524: return (u32)pmm_malloc(highzone, handle, size, align);
525: }
526: }
527: }
528:
529: // PMM - find
530: static u32
531: handle_pmm01(u16 *args)
532: {
533: u32 handle = *(u32*)&args[1];
534: dprintf(3, "pmm01: handle=%x\n", handle);
535: if (handle == PMM_DEFAULT_HANDLE)
536: return 0;
537: return (u32)pmm_find(handle);
538: }
539:
540: // PMM - deallocate
541: static u32
542: handle_pmm02(u16 *args)
543: {
544: u32 buffer = *(u32*)&args[1];
545: dprintf(3, "pmm02: buffer=%x\n", buffer);
546: int ret = pmm_free((void*)buffer);
547: if (ret)
548: // Error
549: return 1;
550: return 0;
551: }
552:
553: static u32
554: handle_pmmXX(u16 *args)
555: {
556: return PMM_FUNCTION_NOT_SUPPORTED;
557: }
558:
559: u32 VISIBLE16
560: handle_pmm(u16 *args)
561: {
562: if (! CONFIG_PMM)
563: return PMM_FUNCTION_NOT_SUPPORTED;
564:
565: u16 arg1 = args[0];
566: dprintf(DEBUG_HDL_pmm, "pmm call arg1=%x\n", arg1);
567:
568: switch (arg1) {
569: case 0x00: return handle_pmm00(args);
570: case 0x01: return handle_pmm01(args);
571: case 0x02: return handle_pmm02(args);
572: default: return handle_pmmXX(args);
573: }
574: }
575:
576: // romlayout.S
1.1.1.2 root 577: extern void entry_pmm(void);
1.1 root 578:
579: void
1.1.1.2 root 580: pmm_setup(void)
1.1 root 581: {
582: if (! CONFIG_PMM)
583: return;
584:
585: dprintf(3, "init PMM\n");
586:
587: PMMHEADER.signature = PMM_SIGNATURE;
588: PMMHEADER.entry_offset = (u32)entry_pmm - BUILD_BIOS_ADDR;
589: PMMHEADER.checksum -= checksum(&PMMHEADER, sizeof(PMMHEADER));
590: }
591:
592: void
1.1.1.2 root 593: pmm_finalize(void)
1.1 root 594: {
595: if (! CONFIG_PMM)
596: return;
597:
598: dprintf(3, "finalize PMM\n");
599:
600: PMMHEADER.signature = 0;
601: PMMHEADER.entry_offset = 0;
602: }
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.