ntoskrnl/config/powerpc/cmhardwr.c

   1 /*
   2  * PROJECT:         ReactOS Kernel
   3  * LICENSE:         GPL - See COPYING in the top level directory
   4  * FILE:            ntoskrnl/config/i386/cmhardwr.c
   5  * PURPOSE:         Configuration Manager - Hardware-Specific Code
   6  * PROGRAMMERS:     Alex Ionescu (alex.ionescu@reactos.org)
   7  */
   8
   9 /* INCLUDES ******************************************************************/
  10
  11 #include "ntoskrnl.h"
  12 #define NDEBUG
  13 #include "debug.h"
  14
  15 /* GLOBALS *******************************************************************/
  16
  17 PCHAR CmpID1 = "PowerPC %u";
  18 PCHAR CmpID2 = "No Data";
  19 PCHAR CmpBiosStrings[] =
  20 {
  21     "Ver",
  22     "Rev",
  23     "Rel",
  24     "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v8", "v9",
  25     "v 0", "v 1", "v 2", "v 3", "v 4", "v 5", "v 6", "v 7", "v 8", "v 9",
  26     NULL
  27 };
  28
  29 PCHAR CmpBiosBegin, CmpBiosSearchStart, CmpBiosSearchEnd;
  30
  31 /* FUNCTIONS *****************************************************************/
  32
  33 BOOLEAN
  34 NTAPI
  35 CmpGetBiosDate(IN PCHAR BiosStart,
  36                IN ULONG BiosLength,
  37                IN PCHAR BiosDate,
  38                IN BOOLEAN FromBios)
  39 {
  40     CHAR LastDate[11] = {0}, CurrentDate[11];
  41     PCHAR p, pp;
  42
  43     /* Skip the signature and the magic, and loop the BIOS ROM */
  44     p = BiosStart + 2;
  45     pp = BiosStart + BiosLength - 5;
  46     while (p < pp)
  47     {
  48         /* Check for xx/yy/zz which we assume to be a date */
  49         if ((p[0] == '/') &&
  50             (p[3] == '/') &&
  51             (isdigit(p[-1])) &&
  52             (isdigit(p[1])) &&
  53             (isdigit(p[2])) &&
  54             (isdigit(p[4])) &&
  55             (isdigit(p[5])))
  56         {
  57             /* Copy the string proper */
  58             RtlMoveMemory(&CurrentDate[5], p - 2, 5);
  59
  60             /* Add a 0 if the month only has one digit */
  61             if (!isdigit(CurrentDate[5])) CurrentDate[5] = '0';
  62
  63             /* Now copy the year */
  64             CurrentDate[2] = p[4];
  65             CurrentDate[3] = p[5];
  66             CurrentDate[4] = CurrentDate[7] = CurrentDate[10] = ANSI_NULL;
  67
  68             /* If the date comes from the BIOS, check if it's a 4-digit year */
  69             if ((FromBios) &&
  70                 (isdigit(p[6])) &&
  71                 (isdigit(p[7])) &&
  72                 ((RtlEqualMemory(&p[4], "19", 2)) ||
  73                  (RtlEqualMemory(&p[4], "20", 2))))
  74             {
  75                 /* Copy the year proper */
  76                 CurrentDate[0] = p[4];
  77                 CurrentDate[1] = p[5];
  78                 CurrentDate[2] = p[6];
  79                 CurrentDate[3] = p[7];
  80             }
  81             else
  82             {
  83                 /* Otherwise, we'll just assume anything under 80 is 2000 */
  84                 if (strtoul(&CurrentDate[2], NULL, 10) < 80)
  85                 {
  86                     /* Hopefully your BIOS wasn't made in 1979 */
  87                     CurrentDate[0] = '2';
  88                     CurrentDate[1] = '0';
  89                 }
  90                 else
  91                 {
  92                     /* Anything over 80, was probably made in the 1900s... */
  93                     CurrentDate[0] = '1';
  94                     CurrentDate[1] = '9';
  95                 }
  96             }
  97
  98             /* Add slashes were we previously had NULLs */
  99             CurrentDate[4] = CurrentDate[7] = '/';
 100
 101             /* Check which date is newer */
 102             if (memcmp(LastDate, CurrentDate, 10) < 0)
 103             {
 104                 /* Found a newer date, select it */
 105                 RtlMoveMemory(LastDate, CurrentDate, 10);
 106             }
 107
 108             p += 2;
 109         }
 110         p++;
 111     }
 112
 113     /* Make sure we found a date */
 114     if (LastDate[0])
 115     {
 116         /* Copy the year at the pp, and keep only the last two digits */
 117         RtlMoveMemory(BiosDate, &LastDate[5], 5);
 118         BiosDate[5] = '/';
 119         BiosDate[6] = LastDate[2];
 120         BiosDate[7] = LastDate[3];
 121         BiosDate[8] = ANSI_NULL;
 122         return TRUE;
 123     }
 124
 125     /* No date found, return empty string */
 126     BiosDate[0] = ANSI_NULL;
 127     return FALSE;
 128 }
 129
 130 BOOLEAN
 131 NTAPI
 132 CmpGetBiosVersion(IN PCHAR BiosStart,
 133                   IN ULONG BiosLength,
 134                   IN PCHAR BiosVersion)
 135 {
 136     CHAR Buffer[128];
 137     PCHAR p, pp;
 138     USHORT i;
 139
 140     /* Check if we were given intitial data for the search */
 141     if (BiosStart)
 142     {
 143         /* Save it for later use */
 144         CmpBiosBegin = BiosStart;
 145         CmpBiosSearchStart = BiosStart + 1;
 146         CmpBiosSearchEnd = BiosStart + BiosLength - 2;
 147     }
 148
 149     /* Now loop the BIOS area */
 150     for (;;)
 151     {
 152         /* Start an initial search looking for numbers and periods */
 153         pp = NULL;
 154         while (CmpBiosSearchStart <= CmpBiosSearchEnd)
 155         {
 156             /* Check if we have an "x.y" version string */
 157             if ((*CmpBiosSearchStart == '.') &&
 158                 (*(CmpBiosSearchStart + 1) >= '0') &&
 159                 (*(CmpBiosSearchStart + 1) <= '9') &&
 160                 (*(CmpBiosSearchStart - 1) >= '0') &&
 161                 (*(CmpBiosSearchStart - 1) <= '9'))
 162             {
 163                 /* Start looking in this area for the actual BIOS Version */
 164                 pp = CmpBiosSearchStart;
 165                 break;
 166             }
 167             else
 168             {
 169                 /* Keep searching */
 170                 CmpBiosSearchStart++;
 171             }
 172         }
 173
 174         /* Break out if we're went past the BIOS area */
 175         if (CmpBiosSearchStart > CmpBiosSearchEnd) return FALSE;
 176
 177         /* Move to the next 2 bytes */
 178         CmpBiosSearchStart += 2;
 179
 180         /* Null-terminate our scratch buffer and start the string here */
 181         Buffer[127] = ANSI_NULL;
 182         p = &Buffer[127];
 183
 184         /* Go back one character since we're doing this backwards */
 185         pp--;
 186
 187         /* Loop the identifier we found as long as it's valid */
 188         i = 0;
 189         while ((i++ < 127) &&
 190                (pp >= CmpBiosBegin) &&
 191                (*pp >= ' ') &&
 192                (*pp != '$'))
 193         {
 194             /* Copy the character */
 195             *--p = *pp--;
 196         }
 197
 198         /* Go past the last character since we went backwards */
 199         pp++;
 200
 201         /* Loop the strings we recognize */
 202         for (i = 0; CmpBiosStrings[i]; i++)
 203         {
 204             /* Check if a match was found */
 205             if (strstr(p, CmpBiosStrings[i])) goto Match;
 206         }
 207     }
 208
 209 Match:
 210     /* Skip until we find a space */
 211     for (; *pp == ' '; pp++);
 212
 213     /* Loop the final string */
 214     i = 0;
 215     do
 216     {
 217         /* Copy the character into the final string */
 218         BiosVersion[i] = *pp++;
 219     } while ((++i < 127) &&
 220              (pp <= (CmpBiosSearchEnd + 1)) &&
 221              (*pp >= ' ') &&
 222              (*pp != '$'));
 223
 224     /* Null-terminate the version string */
 225     BiosVersion[i] = ANSI_NULL;
 226     return TRUE;
 227 }
 228
 229 NTSTATUS
 230 NTAPI
 231 CmpInitializeMachineDependentConfiguration(IN PLOADER_PARAMETER_BLOCK LoaderBlock)
 232 {
 233     UNICODE_STRING KeyName, ValueName, Data, SectionName;
 234     OBJECT_ATTRIBUTES ObjectAttributes;
 235     ULONG HavePae, CacheSize, ViewSize, Length, TotalLength = 0, i, Disposition;
 236     NTSTATUS Status;
 237     HANDLE KeyHandle, BiosHandle, SystemHandle, FpuHandle, SectionHandle;
 238     CONFIGURATION_COMPONENT_DATA ConfigData;
 239     CHAR Buffer[128];
 240     ULONG ExtendedId = 0; //, Dummy;
 241     PKPRCB Prcb;
 242     USHORT IndexTable[MaximumType + 1] = {0};
 243     ANSI_STRING TempString;
 244     PCHAR PartialString = NULL, BiosVersion;
 245     CHAR CpuString[48];
 246     PVOID BaseAddress = NULL;
 247     LARGE_INTEGER ViewBase = {{0}};
 248     ULONG_PTR VideoRomBase;
 249     PCHAR CurrentVersion;
 250     extern UNICODE_STRING KeRosProcessorName, KeRosBiosDate, KeRosBiosVersion;
 251     extern UNICODE_STRING KeRosVideoBiosDate, KeRosVideoBiosVersion;
 252
 253     /* Open the SMSS Memory Management key */
 254     RtlInitUnicodeString(&KeyName,
 255                          L"\\Registry\\Machine\\SYSTEM\\CurrentControlSet\\"
 256                          L"Control\\Session Manager\\Memory Management");
 257     InitializeObjectAttributes(&ObjectAttributes,
 258                                &KeyName,
 259                                OBJ_CASE_INSENSITIVE,
 260                                NULL,
 261                                NULL);
 262     Status = NtOpenKey(&KeyHandle, KEY_READ | KEY_WRITE, &ObjectAttributes);
 263     if (NT_SUCCESS(Status))
 264     {
 265         /* Detect if PAE is enabled */
 266         HavePae = SharedUserData->ProcessorFeatures[PF_PAE_ENABLED];
 267
 268         /* Set the value */
 269         RtlInitUnicodeString(&ValueName, L"PhysicalAddressExtension");
 270         NtSetValueKey(KeyHandle,
 271                       &ValueName,
 272                       0,
 273                       REG_DWORD,
 274                       &HavePae,
 275                       sizeof(HavePae));
 276
 277         /* Close the key */
 278         NtClose(KeyHandle);
 279     }
 280
 281     /* Open the hardware description key */
 282     RtlInitUnicodeString(&KeyName,
 283                          L"\\Registry\\Machine\\Hardware\\Description\\System");
 284     InitializeObjectAttributes(&ObjectAttributes,
 285                                &KeyName,
 286                                OBJ_CASE_INSENSITIVE,
 287                                NULL,
 288                                NULL);
 289     Status = NtOpenKey(&SystemHandle, KEY_READ | KEY_WRITE, &ObjectAttributes);
 290     if (!NT_SUCCESS(Status)) return Status;
 291
 292     /* Create the BIOS Information key */
 293     RtlInitUnicodeString(&KeyName,
 294                          L"\\Registry\\Machine\\SYSTEM\\CurrentControlSet\\"
 295                          L"Control\\BIOSINFO");
 296     InitializeObjectAttributes(&ObjectAttributes,
 297                                &KeyName,
 298                                OBJ_CASE_INSENSITIVE,
 299                                NULL,
 300                                NULL);
 301     Status = NtCreateKey(&BiosHandle,
 302                          KEY_ALL_ACCESS,
 303                          &ObjectAttributes,
 304                          0,
 305                          NULL,
 306                          REG_OPTION_NON_VOLATILE,
 307                          &Disposition);
 308     if (ExpInTextModeSetup)
 309     {
 310         if (!NT_SUCCESS(Status))
 311             BiosHandle = NULL;
 312     }
 313     else if (!NT_SUCCESS(Status))
 314         return Status;
 315
 316     /* Create the CPU Key, and check if it already existed */
 317     RtlInitUnicodeString(&KeyName, L"CentralProcessor");
 318     InitializeObjectAttributes(&ObjectAttributes,
 319                                &KeyName,
 320                                OBJ_CASE_INSENSITIVE,
 321                                SystemHandle,
 322                                NULL);
 323     Status = NtCreateKey(&KeyHandle,
 324                          KEY_READ | KEY_WRITE,
 325                          &ObjectAttributes,
 326                          0,
 327                          NULL,
 328                          0,
 329                          &Disposition);
 330     NtClose(KeyHandle);
 331
 332     /* The key shouldn't already exist */
 333     if (Disposition == REG_CREATED_NEW_KEY)
 334     {
 335         /* Allocate the configuration data for cmconfig.c */
 336         CmpConfigurationData = ExAllocatePoolWithTag(PagedPool,
 337                                                      CmpConfigurationAreaSize,
 338                                                      TAG_CM);
 339         if (!CmpConfigurationData) return STATUS_INSUFFICIENT_RESOURCES;
 340
 341         /* Loop all CPUs */
 342         for (i = 0; i < KeNumberProcessors; i++)
 343         {
 344             /* Get the PRCB */
 345             Prcb = KiProcessorBlock[i];
 346
 347             /* Setup the Configuration Entry for the Processor */
 348             RtlZeroMemory(&ConfigData, sizeof (ConfigData));
 349             ConfigData.ComponentEntry.Class = ProcessorClass;
 350             ConfigData.ComponentEntry.Type = CentralProcessor;
 351             ConfigData.ComponentEntry.Key = i;
 352             ConfigData.ComponentEntry.AffinityMask = AFFINITY_MASK(i);
 353             ConfigData.ComponentEntry.Identifier = Buffer;
 354
 355             /* Check if the CPU doesn't support CPUID */
 356             if (!Prcb->CpuID)
 357             {
 358                 /* Build ID1-style string for older CPUs */
 359                 sprintf(Buffer,
 360                         CmpID1,
 361                         Prcb->CpuType,
 362                         (Prcb->CpuStep >> 8) + 'A',
 363                         Prcb->CpuStep & 0xff);
 364             }
 365             else
 366             {
 367                 /* Build ID2-style string for newer CPUs */
 368                 sprintf(Buffer,
 369                         CmpID2,
 370                         Prcb->CpuType,
 371                         (Prcb->CpuStep >> 8),
 372                         Prcb->CpuStep & 0xff);
 373             }
 374
 375             /* Save the ID string length now that we've created it */
 376             ConfigData.ComponentEntry.IdentifierLength = strlen(Buffer) + 1;
 377
 378             /* Initialize the registry configuration node for it */
 379             Status = CmpInitializeRegistryNode(&ConfigData,
 380                                                SystemHandle,
 381                                                &KeyHandle,
 382                                                InterfaceTypeUndefined,
 383                                                0xFFFFFFFF,
 384                                                IndexTable);
 385             if (!NT_SUCCESS(Status)) return(Status);
 386
 387             {
 388                 /* Setup the Configuration Entry for the FPU */
 389                 RtlZeroMemory(&ConfigData, sizeof(ConfigData));
 390                 ConfigData.ComponentEntry.Class = ProcessorClass;
 391                 ConfigData.ComponentEntry.Type = FloatingPointProcessor;
 392                 ConfigData.ComponentEntry.Key = i;
 393                 ConfigData.ComponentEntry.AffinityMask = AFFINITY_MASK(i);
 394                 ConfigData.ComponentEntry.Identifier = Buffer;
 395
 396                 /* For 386 cpus, the CPU pp is the identifier */
 397                 if (Prcb->CpuType == 3) strcpy(Buffer, "80387");
 398
 399                 /* Save the ID string length now that we've created it */
 400                 ConfigData.ComponentEntry.IdentifierLength = strlen(Buffer) + 1;
 401
 402                 /* Initialize the registry configuration node for it */
 403                 Status = CmpInitializeRegistryNode(&ConfigData,
 404                                                    SystemHandle,
 405                                                    &FpuHandle,
 406                                                    InterfaceTypeUndefined,
 407                                                    0xFFFFFFFF,
 408                                                    IndexTable);
 409                 if (!NT_SUCCESS(Status))
 410                 {
 411                     /* Failed, close the CPU handle and return */
 412                     NtClose(KeyHandle);
 413                     return Status;
 414                 }
 415
 416                 /* Close this new handle */
 417                 NtClose(FpuHandle);
 418
 419                 /* Stay on this CPU only */
 420                 KeSetSystemAffinityThread(Prcb->SetMember);
 421                 if (!Prcb->CpuID)
 422                 {
 423                     /* Uh oh, no CPUID! */
 424                 }
 425                 else
 426                 {
 427                     /* Check if we have extended CPUID that supports name ID */
 428                     //Ki386Cpuid(0x80000000, &ExtendedId, &Dummy, &Dummy, &Dummy);
 429                     if (ExtendedId >= 0x80000004)
 430                     {
 431                         /* Do all the CPUIDs requred to get the full name */
 432                         PartialString = CpuString;
 433                         for (ExtendedId = 2; ExtendedId <= 4; ExtendedId++)
 434                         {
 435 #if 0
 436                             /* Do the CPUID and save the name string */
 437                             Ki386Cpuid(0x80000000 | ExtendedId,
 438                                        (PULONG)PartialString,
 439                                        (PULONG)PartialString + 1,
 440                                        (PULONG)PartialString + 2,
 441                                        (PULONG)PartialString + 3);
 442 #endif
 443
 444                             /* Go to the next name string */
 445                             PartialString += 16;
 446                         }
 447
 448                         /* Null-terminate it */
 449                         CpuString[48] = ANSI_NULL;
 450                     }
 451                 }
 452
 453                 /* Get the cache size while we're still localized */
 454                 CacheSize = 0; //((PKIPCR)KeGetPcr())->SecondLevelCacheSize;
 455
 456                 /* Go back to user affinity */
 457                 KeRevertToUserAffinityThread();
 458
 459                 /* Check if we have a CPU Name */
 460                 if (PartialString)
 461                 {
 462                     /* Convert it to Unicode */
 463                     RtlInitAnsiString(&TempString, CpuString);
 464                     RtlAnsiStringToUnicodeString(&Data, &TempString, TRUE);
 465
 466                     /* Add it to the registry */
 467                     RtlInitUnicodeString(&ValueName, L"ProcessorNameString");
 468                     Status = NtSetValueKey(KeyHandle,
 469                                            &ValueName,
 470                                            0,
 471                                            REG_SZ,
 472                                            Data.Buffer,
 473                                            Data.Length + sizeof(UNICODE_NULL));
 474
 475                     /* ROS: Save a copy for bugzilla reporting */
 476                     RtlCreateUnicodeString(&KeRosProcessorName, Data.Buffer);
 477
 478                     /* Free the temporary buffer */
 479                     RtlFreeUnicodeString(&Data);
 480                 }
 481
 482                 /* Check if we had a Vendor ID */
 483                 if (Prcb->VendorString)
 484                 {
 485                     /* Convert it to Unicode */
 486                     RtlInitAnsiString(&TempString, Prcb->VendorString);
 487                     RtlAnsiStringToUnicodeString(&Data, &TempString, TRUE);
 488
 489                     /* Add it to the registry */
 490                     RtlInitUnicodeString(&ValueName, L"VendorIdentifier");
 491                     Status = NtSetValueKey(KeyHandle,
 492                                            &ValueName,
 493                                            0,
 494                                            REG_SZ,
 495                                            Data.Buffer,
 496                                            Data.Length + sizeof(UNICODE_NULL));
 497
 498                     /* Free the temporary buffer */
 499                     RtlFreeUnicodeString(&Data);
 500                 }
 501
 502                 /* Check if we have features bits */
 503                 if (Prcb->FeatureBits)
 504                 {
 505                     /* Add them to the registry */
 506                     RtlInitUnicodeString(&ValueName, L"FeatureSet");
 507                     Status = NtSetValueKey(KeyHandle,
 508                                            &ValueName,
 509                                            0,
 510                                            REG_DWORD,
 511                                            &Prcb->FeatureBits,
 512                                            sizeof(Prcb->FeatureBits));
 513                 }
 514
 515                 /* Check if we detected the CPU Speed */
 516                 if (Prcb->MHz)
 517                 {
 518                     /* Add it to the registry */
 519                     RtlInitUnicodeString(&ValueName, L"~MHz");
 520                     Status = NtSetValueKey(KeyHandle,
 521                                            &ValueName,
 522                                            0,
 523                                            REG_DWORD,
 524                                            &Prcb->MHz,
 525                                            sizeof(Prcb->MHz));
 526                 }
 527
 528                 /* Check if we have an update signature */
 529                 if (Prcb->UpdateSignature.QuadPart)
 530                 {
 531                     /* Add it to the registry */
 532                     RtlInitUnicodeString(&ValueName, L"Update Signature");
 533                     Status = NtSetValueKey(KeyHandle,
 534                                            &ValueName,
 535                                            0,
 536                                            REG_BINARY,
 537                                            &Prcb->UpdateSignature,
 538                                            sizeof(Prcb->UpdateSignature));
 539                 }
 540
 541                 /* Close the processor handle */
 542                 NtClose(KeyHandle);
 543
 544                 /* FIXME: Detect CPU mismatches */
 545             }
 546         }
 547
 548         /* Free the configuration data */
 549         ExFreePool(CmpConfigurationData);
 550     }
 551
 552     /* Open physical memory */
 553     RtlInitUnicodeString(&SectionName, L"\\Device\\PhysicalMemory");
 554     InitializeObjectAttributes(&ObjectAttributes,
 555                                &SectionName,
 556                                OBJ_CASE_INSENSITIVE,
 557                                NULL,
 558                                NULL);
 559     Status = ZwOpenSection(&SectionHandle,
 560                            SECTION_ALL_ACCESS,
 561                            &ObjectAttributes);
 562     if (!NT_SUCCESS(Status)) goto Quickie;
 563
 564     /* Map the first 1KB of memory to get the IVT */
 565     ViewSize = PAGE_SIZE;
 566     Status = ZwMapViewOfSection(SectionHandle,
 567                                 NtCurrentProcess(),
 568                                 &BaseAddress,
 569                                 0,
 570                                 ViewSize,
 571                                 &ViewBase,
 572                                 &ViewSize,
 573                                 ViewUnmap,
 574                                 MEM_DOS_LIM,
 575                                 PAGE_READWRITE);
 576     if (!NT_SUCCESS(Status))
 577     {
 578         /* Assume default */
 579         VideoRomBase = 0xC0000;
 580     }
 581     else
 582     {
 583         /* Calculate the base address from the vector */
 584         VideoRomBase = (*((PULONG)BaseAddress + 0x10) >> 12) & 0xFFFF0;
 585         VideoRomBase += *((PULONG)BaseAddress + 0x10) & 0xFFF0;
 586
 587         /* Now get to the actual ROM Start and make sure it's not invalid*/
 588         VideoRomBase &= 0xFFFF8000;
 589         if (VideoRomBase < 0xC0000) VideoRomBase = 0xC0000;
 590
 591         /* And unmap the section */
 592         ZwUnmapViewOfSection(NtCurrentProcess(), BaseAddress);
 593     }
 594
 595     /* Allocate BIOS Version pp Buffer */
 596     BiosVersion = ExAllocatePoolWithTag(PagedPool, PAGE_SIZE, TAG_CM);
 597
 598     /* Setup settings to map the 64K BIOS ROM */
 599     BaseAddress = 0;
 600     ViewSize = 16 * PAGE_SIZE;
 601     ViewBase.LowPart = 0xF0000;
 602     ViewBase.HighPart = 0;
 603
 604     /* Map it */
 605     Status = ZwMapViewOfSection(SectionHandle,
 606                                 NtCurrentProcess(),
 607                                 &BaseAddress,
 608                                 0,
 609                                 ViewSize,
 610                                 &ViewBase,
 611                                 &ViewSize,
 612                                 ViewUnmap,
 613                                 MEM_DOS_LIM,
 614                                 PAGE_READWRITE);
 615     if (NT_SUCCESS(Status))
 616     {
 617         /* Scan the ROM to get the BIOS Date */
 618         if (CmpGetBiosDate(BaseAddress, 16 * PAGE_SIZE, Buffer, TRUE))
 619         {
 620             /* Convert it to Unicode */
 621             RtlInitAnsiString(&TempString, Buffer);
 622             RtlAnsiStringToUnicodeString(&Data, &TempString, TRUE);
 623
 624             /* Write the date into the registry */
 625             RtlInitUnicodeString(&ValueName, L"SystemBiosDate");
 626             Status = NtSetValueKey(SystemHandle,
 627                                    &ValueName,
 628                                    0,
 629                                    REG_SZ,
 630                                    Data.Buffer,
 631                                    Data.Length + sizeof(UNICODE_NULL));
 632
 633             /* Free the string */
 634             RtlFreeUnicodeString(&Data);
 635
 636             if (BiosHandle)
 637             {
 638                 /* Get the BIOS Date Identifier */
 639                 RtlCopyMemory(Buffer, (PCHAR)BaseAddress + (16*PAGE_SIZE - 11), 8);
 640                 Buffer[8] = ANSI_NULL;
 641
 642                 /* Convert it to unicode */
 643                 RtlInitAnsiString(&TempString, Buffer);
 644                 Status = RtlAnsiStringToUnicodeString(&Data, &TempString, TRUE);
 645                 if (NT_SUCCESS(Status))
 646                 {
 647                     /* Save it to the registry */
 648                     Status = NtSetValueKey(BiosHandle,
 649                                            &ValueName,
 650                                            0,
 651                                            REG_SZ,
 652                                            Data.Buffer,
 653                                            Data.Length + sizeof(UNICODE_NULL));
 654
 655                     /* ROS: Save a copy for bugzilla reporting */
 656                     RtlCreateUnicodeString(&KeRosBiosDate, Data.Buffer);
 657
 658                     /* Free the string */
 659                     RtlFreeUnicodeString(&Data);
 660                 }
 661
 662                 /* Close the bios information handle */
 663                 NtClose(BiosHandle);
 664             }
 665         }
 666
 667         /* Get the BIOS Version */
 668         if (CmpGetBiosVersion(BaseAddress, 16* PAGE_SIZE, Buffer))
 669         {
 670             /* Start at the beginning of our buffer */
 671             CurrentVersion = BiosVersion;
 672             do
 673             {
 674                 /* Convert to Unicode */
 675                 RtlInitAnsiString(&TempString, Buffer);
 676                 RtlAnsiStringToUnicodeString(&Data, &TempString, TRUE);
 677
 678                 /* Calculate the length of this string and copy it in */
 679                 Length = Data.Length + sizeof(UNICODE_NULL);
 680                 RtlMoveMemory(CurrentVersion, Data.Buffer, Length);
 681
 682                 /* Free the unicode string */
 683                 RtlFreeUnicodeString(&Data);
 684
 685                 /* Update the total length and see if we're out of space */
 686                 TotalLength += Length;
 687                 if (TotalLength + 256 + sizeof(UNICODE_NULL) > PAGE_SIZE)
 688                 {
 689                     /* One more string would push us out, so stop here */
 690                     break;
 691                 }
 692
 693                 /* Go to the next string inside the multi-string buffer */
 694                 CurrentVersion += Length;
 695
 696                 /* Query the next BIOS Version */
 697             } while (CmpGetBiosVersion(NULL, 0, Buffer));
 698
 699             /* Check if we found any strings at all */
 700             if (TotalLength)
 701             {
 702                 /* Add the final null-terminator */
 703                 *(PWSTR)CurrentVersion = UNICODE_NULL;
 704                 TotalLength += sizeof(UNICODE_NULL);
 705
 706                 /* Write the BIOS Version to the registry */
 707                 RtlInitUnicodeString(&ValueName, L"SystemBiosVersion");
 708                 Status = NtSetValueKey(SystemHandle,
 709                                        &ValueName,
 710                                        0,
 711                                        REG_MULTI_SZ,
 712                                        BiosVersion,
 713                                        TotalLength);
 714
 715                 /* ROS: Save a copy for bugzilla reporting */
 716                 RtlCreateUnicodeString(&KeRosBiosVersion, (PWCH)BiosVersion);
 717             }
 718         }
 719
 720         /* Unmap the section */
 721         ZwUnmapViewOfSection(NtCurrentProcess(), BaseAddress);
 722     }
 723
 724     /* Now prepare for Video BIOS Mapping of 32KB */
 725     BaseAddress = 0;
 726     ViewSize = 8 * PAGE_SIZE;
 727     ViewBase.LowPart = VideoRomBase;
 728     ViewBase.HighPart = 0;
 729
 730     /* Map it */
 731     Status = ZwMapViewOfSection(SectionHandle,
 732                                 NtCurrentProcess(),
 733                                 &BaseAddress,
 734                                 0,
 735                                 ViewSize,
 736                                 &ViewBase,
 737                                 &ViewSize,
 738                                 ViewUnmap,
 739                                 MEM_DOS_LIM,
 740                                 PAGE_READWRITE);
 741     if (NT_SUCCESS(Status))
 742     {
 743         /* Scan the ROM to get the BIOS Date */
 744         if (CmpGetBiosDate(BaseAddress, 8 * PAGE_SIZE, Buffer, FALSE))
 745         {
 746             /* Convert it to Unicode */
 747             RtlInitAnsiString(&TempString, Buffer);
 748             RtlAnsiStringToUnicodeString(&Data, &TempString, TRUE);
 749
 750             /* Write the date into the registry */
 751             RtlInitUnicodeString(&ValueName, L"VideoBiosDate");
 752             Status = NtSetValueKey(SystemHandle,
 753                                    &ValueName,
 754                                    0,
 755                                    REG_SZ,
 756                                    Data.Buffer,
 757                                    Data.Length + sizeof(UNICODE_NULL));
 758
 759             /* ROS: Save a copy for bugzilla reporting */
 760             RtlCreateUnicodeString(&KeRosVideoBiosDate, Data.Buffer);
 761
 762             /* Free the string */
 763             RtlFreeUnicodeString(&Data);
 764         }
 765
 766         /* Get the Video BIOS Version */
 767         if (CmpGetBiosVersion(BaseAddress, 8* PAGE_SIZE, Buffer))
 768         {
 769             /* Start at the beginning of our buffer */
 770             CurrentVersion = BiosVersion;
 771             do
 772             {
 773                 /* Convert to Unicode */
 774                 RtlInitAnsiString(&TempString, Buffer);
 775                 RtlAnsiStringToUnicodeString(&Data, &TempString, TRUE);
 776
 777                 /* Calculate the length of this string and copy it in */
 778                 Length = Data.Length + sizeof(UNICODE_NULL);
 779                 RtlMoveMemory(CurrentVersion, Data.Buffer, Length);
 780
 781                 /* Free the unicode string */
 782                 RtlFreeUnicodeString(&Data);
 783
 784                 /* Update the total length and see if we're out of space */
 785                 TotalLength += Length;
 786                 if (TotalLength + 256 + sizeof(UNICODE_NULL) > PAGE_SIZE)
 787                 {
 788                     /* One more string would push us out, so stop here */
 789                     break;
 790                 }
 791
 792                 /* Go to the next string inside the multi-string buffer */
 793                 CurrentVersion += Length;
 794
 795                 /* Query the next BIOS Version */
 796             } while (CmpGetBiosVersion(NULL, 0, Buffer));
 797
 798             /* Check if we found any strings at all */
 799             if (TotalLength)
 800             {
 801                 /* Add the final null-terminator */
 802                 *(PWSTR)CurrentVersion = UNICODE_NULL;
 803                 TotalLength += sizeof(UNICODE_NULL);
 804
 805                 /* Write the BIOS Version to the registry */
 806                 RtlInitUnicodeString(&ValueName, L"VideoBiosVersion");
 807                 Status = NtSetValueKey(SystemHandle,
 808                                        &ValueName,
 809                                        0,
 810                                        REG_MULTI_SZ,
 811                                        BiosVersion,
 812                                        TotalLength);
 813
 814                 /* ROS: Save a copy for bugzilla reporting */
 815                 RtlCreateUnicodeString(&KeRosVideoBiosVersion, (PWCH)BiosVersion);
 816             }
 817         }
 818
 819         /* Unmap the section */
 820         ZwUnmapViewOfSection(NtCurrentProcess(), BaseAddress);
 821     }
 822
 823     /* Close the section */
 824     ZwClose(SectionHandle);
 825
 826     /* Free the BIOS version string buffer */
 827     if (BiosVersion) ExFreePool(BiosVersion);
 828
 829 Quickie:
 830     /* Close the procesor handle */
 831     NtClose(KeyHandle);
 832     return STATUS_SUCCESS;
 833 }