mirror of
https://github.com/reactos/reactos.git
synced 2024-11-10 00:34:39 +00:00
897 lines
32 KiB
C
897 lines
32 KiB
C
/*
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* PROJECT: ReactOS Kernel
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* LICENSE: GPL - See COPYING in the top level directory
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* FILE: ntoskrnl/config/i386/cmhardwr.c
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* PURPOSE: Configuration Manager - Hardware-Specific Code
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* PROGRAMMERS: Alex Ionescu (alex.ionescu@reactos.org)
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*/
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/* INCLUDES ******************************************************************/
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#include "ntoskrnl.h"
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#define NDEBUG
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#include "debug.h"
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/* GLOBALS *******************************************************************/
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PCHAR CmpFullCpuID = "%s Family %u Model %u Stepping %u";
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PCHAR CmpBiosStrings[] =
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{
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"Ver",
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"Rev",
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"Rel",
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"v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v8", "v9",
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"v 0", "v 1", "v 2", "v 3", "v 4", "v 5", "v 6", "v 7", "v 8", "v 9",
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NULL
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};
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PCHAR CmpBiosBegin, CmpBiosSearchStart, CmpBiosSearchEnd;
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/* FUNCTIONS *****************************************************************/
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BOOLEAN
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NTAPI
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CmpGetBiosDate(IN PCHAR BiosStart,
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IN ULONG BiosLength,
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IN PCHAR BiosDate,
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IN BOOLEAN FromBios)
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{
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CHAR LastDate[11] = {0}, CurrentDate[11];
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PCHAR p, pp;
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/* Skip the signature and the magic, and loop the BIOS ROM */
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p = BiosStart + 2;
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pp = BiosStart + BiosLength - 5;
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while (p < pp)
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{
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/* Check for xx/yy/zz which we assume to be a date */
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if ((p[0] == '/') &&
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(p[3] == '/') &&
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(isdigit(p[-1])) &&
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(isdigit(p[1])) &&
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(isdigit(p[2])) &&
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(isdigit(p[4])) &&
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(isdigit(p[5])))
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{
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/* Copy the string proper */
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RtlMoveMemory(&CurrentDate[5], p - 2, 5);
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/* Add a 0 if the month only has one digit */
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if (!isdigit(CurrentDate[5])) CurrentDate[5] = '0';
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/* Now copy the year */
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CurrentDate[2] = p[4];
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CurrentDate[3] = p[5];
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CurrentDate[4] = CurrentDate[7] = CurrentDate[10] = ANSI_NULL;
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/* If the date comes from the BIOS, check if it's a 4-digit year */
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if ((FromBios) &&
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(isdigit(p[6])) &&
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(isdigit(p[7])) &&
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((RtlEqualMemory(&p[4], "19", 2)) ||
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(RtlEqualMemory(&p[4], "20", 2))))
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{
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/* Copy the year proper */
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CurrentDate[0] = p[4];
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CurrentDate[1] = p[5];
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CurrentDate[2] = p[6];
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CurrentDate[3] = p[7];
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}
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else
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{
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/* Otherwise, we'll just assume anything under 80 is 2000 */
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if (strtoul(&CurrentDate[2], NULL, 10) < 80)
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{
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/* Hopefully your BIOS wasn't made in 1979 */
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CurrentDate[0] = '2';
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CurrentDate[1] = '0';
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}
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else
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{
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/* Anything over 80, was probably made in the 1900s... */
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CurrentDate[0] = '1';
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CurrentDate[1] = '9';
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}
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}
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/* Add slashes where we previously had NULLs */
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CurrentDate[4] = CurrentDate[7] = '/';
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/* Check which date is newer */
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if (memcmp(LastDate, CurrentDate, 10) < 0)
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{
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/* Found a newer date, select it */
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RtlMoveMemory(LastDate, CurrentDate, 10);
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}
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p += 2;
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}
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p++;
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}
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/* Make sure we found a date */
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if (LastDate[0])
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{
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/* Copy the year at the pp, and keep only the last two digits */
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RtlMoveMemory(BiosDate, &LastDate[5], 5);
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BiosDate[5] = '/';
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BiosDate[6] = LastDate[2];
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BiosDate[7] = LastDate[3];
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BiosDate[8] = ANSI_NULL;
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return TRUE;
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}
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/* No date found, return empty string */
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BiosDate[0] = ANSI_NULL;
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return FALSE;
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}
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BOOLEAN
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NTAPI
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CmpGetBiosVersion(IN PCHAR BiosStart,
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IN ULONG BiosLength,
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IN PCHAR BiosVersion)
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{
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CHAR Buffer[128];
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PCHAR p, pp;
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USHORT i;
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/* Check if we were given intitial data for the search */
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if (BiosStart)
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{
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/* Save it for later use */
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CmpBiosBegin = BiosStart;
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CmpBiosSearchStart = BiosStart + 1;
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CmpBiosSearchEnd = BiosStart + BiosLength - 2;
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}
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/* Now loop the BIOS area */
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for (;;)
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{
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/* Start an initial search looking for numbers and periods */
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pp = NULL;
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while (CmpBiosSearchStart <= CmpBiosSearchEnd)
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{
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/* Check if we have an "x.y" version string */
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if ((*CmpBiosSearchStart == '.') &&
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(*(CmpBiosSearchStart + 1) >= '0') &&
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(*(CmpBiosSearchStart + 1) <= '9') &&
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(*(CmpBiosSearchStart - 1) >= '0') &&
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(*(CmpBiosSearchStart - 1) <= '9'))
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{
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/* Start looking in this area for the actual BIOS Version */
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pp = CmpBiosSearchStart;
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break;
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}
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else
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{
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/* Keep searching */
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CmpBiosSearchStart++;
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}
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}
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/* Break out if we're went past the BIOS area */
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if (CmpBiosSearchStart > CmpBiosSearchEnd) return FALSE;
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/* Move to the next 2 bytes */
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CmpBiosSearchStart += 2;
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/* Null-terminate our scratch buffer and start the string here */
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Buffer[127] = ANSI_NULL;
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p = &Buffer[127];
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/* Go back one character since we're doing this backwards */
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pp--;
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/* Loop the identifier we found as long as it's valid */
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i = 0;
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while ((i++ < 127) &&
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(pp >= CmpBiosBegin) &&
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(*pp >= ' ') &&
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(*pp != '$'))
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{
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/* Copy the character */
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*--p = *pp--;
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}
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/* Go past the last character since we went backwards */
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pp++;
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/* Loop the strings we recognize */
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for (i = 0; CmpBiosStrings[i]; i++)
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{
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/* Check if a match was found */
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if (strstr(p, CmpBiosStrings[i])) goto Match;
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}
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}
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Match:
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/* Skip until we find a space */
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for (; *pp == ' '; pp++);
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/* Loop the final string */
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i = 0;
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do
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{
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/* Copy the character into the final string */
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BiosVersion[i] = *pp++;
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} while ((++i < 127) &&
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(pp <= (CmpBiosSearchEnd + 1)) &&
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(*pp >= ' ') &&
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(*pp != '$'));
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/* Null-terminate the version string */
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BiosVersion[i] = ANSI_NULL;
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return TRUE;
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}
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NTSTATUS
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NTAPI
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CmpInitializeMachineDependentConfiguration(IN PLOADER_PARAMETER_BLOCK LoaderBlock)
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{
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UNICODE_STRING KeyName, ValueName, Data, SectionName;
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OBJECT_ATTRIBUTES ObjectAttributes;
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ULONG HavePae, Length, TotalLength = 0, i, Disposition;
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SIZE_T ViewSize;
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NTSTATUS Status;
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HANDLE KeyHandle, BiosHandle, SystemHandle, FpuHandle, SectionHandle;
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CONFIGURATION_COMPONENT_DATA ConfigData;
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CHAR Buffer[128];
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CPU_INFO CpuInfo;
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ULONG ExtendedId;
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PKPRCB Prcb;
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USHORT IndexTable[MaximumType + 1] = {0};
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ANSI_STRING TempString;
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PCHAR PartialString = NULL, BiosVersion;
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CHAR CpuString[48];
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PVOID BaseAddress = NULL;
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LARGE_INTEGER ViewBase = {{0, 0}};
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ULONG_PTR VideoRomBase;
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PCHAR CurrentVersion;
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extern UNICODE_STRING KeRosProcessorName, KeRosBiosDate, KeRosBiosVersion;
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extern UNICODE_STRING KeRosVideoBiosDate, KeRosVideoBiosVersion;
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/* Open the SMSS Memory Management key */
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RtlInitUnicodeString(&KeyName,
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L"\\Registry\\Machine\\SYSTEM\\CurrentControlSet\\"
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L"Control\\Session Manager\\Memory Management");
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InitializeObjectAttributes(&ObjectAttributes,
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&KeyName,
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OBJ_CASE_INSENSITIVE,
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NULL,
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NULL);
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Status = NtOpenKey(&KeyHandle, KEY_READ | KEY_WRITE, &ObjectAttributes);
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if (NT_SUCCESS(Status))
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{
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/* Detect if PAE is enabled */
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HavePae = SharedUserData->ProcessorFeatures[PF_PAE_ENABLED];
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/* Set the value */
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RtlInitUnicodeString(&ValueName, L"PhysicalAddressExtension");
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NtSetValueKey(KeyHandle,
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&ValueName,
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0,
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REG_DWORD,
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&HavePae,
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sizeof(HavePae));
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/* Close the key */
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NtClose(KeyHandle);
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}
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/* Open the hardware description key */
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RtlInitUnicodeString(&KeyName,
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L"\\Registry\\Machine\\Hardware\\Description\\System");
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InitializeObjectAttributes(&ObjectAttributes,
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&KeyName,
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OBJ_CASE_INSENSITIVE,
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NULL,
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NULL);
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Status = NtOpenKey(&SystemHandle, KEY_READ | KEY_WRITE, &ObjectAttributes);
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if (!NT_SUCCESS(Status))
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return Status;
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/* Create the BIOS Information key */
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RtlInitUnicodeString(&KeyName,
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L"\\Registry\\Machine\\SYSTEM\\CurrentControlSet\\"
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L"Control\\BIOSINFO");
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InitializeObjectAttributes(&ObjectAttributes,
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&KeyName,
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OBJ_CASE_INSENSITIVE,
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NULL,
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NULL);
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Status = NtCreateKey(&BiosHandle,
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KEY_ALL_ACCESS,
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&ObjectAttributes,
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0,
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NULL,
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REG_OPTION_NON_VOLATILE,
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&Disposition);
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if (!NT_SUCCESS(Status))
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{
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NtClose(SystemHandle);
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return Status;
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}
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/* Create the CPU Key, and check if it already existed */
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RtlInitUnicodeString(&KeyName, L"CentralProcessor");
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InitializeObjectAttributes(&ObjectAttributes,
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&KeyName,
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OBJ_CASE_INSENSITIVE,
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SystemHandle,
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NULL);
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Status = NtCreateKey(&KeyHandle,
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KEY_READ | KEY_WRITE,
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&ObjectAttributes,
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0,
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NULL,
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0,
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&Disposition);
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NtClose(KeyHandle);
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/* The key shouldn't already exist */
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if (Disposition == REG_CREATED_NEW_KEY)
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{
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/* Allocate the configuration data for cmconfig.c */
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CmpConfigurationData = ExAllocatePoolWithTag(PagedPool,
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CmpConfigurationAreaSize,
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TAG_CM);
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if (!CmpConfigurationData)
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{
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// FIXME: Cleanup stuff!!
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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/* Loop all CPUs */
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for (i = 0; i < KeNumberProcessors; i++)
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{
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#ifdef _M_AMD64
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PCHAR FamilyId;
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#endif
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/* Get the PRCB */
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Prcb = KiProcessorBlock[i];
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/* Setup the Configuration Entry for the Processor */
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RtlZeroMemory(&ConfigData, sizeof(ConfigData));
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ConfigData.ComponentEntry.Class = ProcessorClass;
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ConfigData.ComponentEntry.Type = CentralProcessor;
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ConfigData.ComponentEntry.Key = i;
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ConfigData.ComponentEntry.AffinityMask = AFFINITY_MASK(i);
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ConfigData.ComponentEntry.Identifier = Buffer;
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#if defined(_M_IX86)
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/* Check if the CPU doesn't support CPUID */
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if (!Prcb->CpuID)
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{
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/* Build 80x86-style string for older CPUs */
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sprintf(Buffer,
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"80%u86-%c%x",
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Prcb->CpuType,
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(Prcb->CpuStep >> 8) + 'A',
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Prcb->CpuStep & 0xff);
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}
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else
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{
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/* Build full ID string for newer CPUs */
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sprintf(Buffer,
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CmpFullCpuID,
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"x86",
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Prcb->CpuType,
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(Prcb->CpuStep >> 8),
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Prcb->CpuStep & 0xff);
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}
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#elif defined(_M_AMD64)
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if (Prcb->CpuVendor == CPU_VIA)
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{
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/* This is VIA64 family */
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FamilyId = "VIA64";
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}
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else if (Prcb->CpuVendor == CPU_AMD)
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{
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/* This is AMD64 family */
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FamilyId = "AMD64";
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}
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else
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{
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/* This is generic EM64T family */
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FamilyId = "EM64T";
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}
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/* ID string has the same style for all 64-bit CPUs */
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sprintf(Buffer,
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CmpFullCpuID,
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FamilyId,
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Prcb->CpuType,
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(Prcb->CpuStep >> 8),
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Prcb->CpuStep & 0xff);
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#else
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#error Unknown architecture
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#endif
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/* Save the ID string length now that we've created it */
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ConfigData.ComponentEntry.IdentifierLength = (ULONG)strlen(Buffer) + 1;
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/* Initialize the registry configuration node for it */
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Status = CmpInitializeRegistryNode(&ConfigData,
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SystemHandle,
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&KeyHandle,
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InterfaceTypeUndefined,
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0xFFFFFFFF,
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IndexTable);
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if (!NT_SUCCESS(Status))
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{
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NtClose(BiosHandle);
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NtClose(SystemHandle);
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return Status;
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}
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/* Check if we have an FPU */
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if (KeI386NpxPresent)
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{
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/* Setup the Configuration Entry for the FPU */
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RtlZeroMemory(&ConfigData, sizeof(ConfigData));
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ConfigData.ComponentEntry.Class = ProcessorClass;
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ConfigData.ComponentEntry.Type = FloatingPointProcessor;
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ConfigData.ComponentEntry.Key = i;
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ConfigData.ComponentEntry.AffinityMask = AFFINITY_MASK(i);
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ConfigData.ComponentEntry.Identifier = Buffer;
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/* For 386 cpus, the CPU pp is the identifier */
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if (Prcb->CpuType == 3) strcpy(Buffer, "80387");
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/* Save the ID string length now that we've created it */
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ConfigData.ComponentEntry.IdentifierLength = (ULONG)strlen(Buffer) + 1;
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/* Initialize the registry configuration node for it */
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Status = CmpInitializeRegistryNode(&ConfigData,
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SystemHandle,
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&FpuHandle,
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InterfaceTypeUndefined,
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0xFFFFFFFF,
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IndexTable);
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if (!NT_SUCCESS(Status))
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{
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/* We failed, close all the opened handles and return */
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NtClose(KeyHandle);
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NtClose(BiosHandle);
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NtClose(SystemHandle);
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return Status;
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}
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/* Close this new handle */
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NtClose(FpuHandle);
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/* Stay on this CPU only */
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KeSetSystemAffinityThread(Prcb->SetMember);
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if (!Prcb->CpuID)
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{
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/* Uh oh, no CPUID! Should not happen as we don't support 80386 and older 80486 */
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ASSERT(FALSE);
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}
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else
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{
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/* Check if we have extended CPUID that supports name ID */
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KiCpuId(&CpuInfo, 0x80000000);
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ExtendedId = CpuInfo.Eax;
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if (ExtendedId >= 0x80000004)
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{
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/* Do all the CPUIDs required to get the full name */
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PartialString = CpuString;
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for (ExtendedId = 2; ExtendedId <= 4; ExtendedId++)
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{
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/* Do the CPUID and save the name string */
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KiCpuId(&CpuInfo, 0x80000000 | ExtendedId);
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((PULONG)PartialString)[0] = CpuInfo.Eax;
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((PULONG)PartialString)[1] = CpuInfo.Ebx;
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((PULONG)PartialString)[2] = CpuInfo.Ecx;
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((PULONG)PartialString)[3] = CpuInfo.Edx;
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/* Go to the next name string */
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PartialString += 16;
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}
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/* Null-terminate it */
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CpuString[47] = ANSI_NULL;
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}
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}
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/* Go back to user affinity */
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KeRevertToUserAffinityThread();
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/* Check if we have a CPU Name */
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if (PartialString)
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{
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/* Convert it to Unicode */
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RtlInitAnsiString(&TempString, CpuString);
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if (NT_SUCCESS(RtlAnsiStringToUnicodeString(&Data, &TempString, TRUE)))
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{
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/* Add it to the registry */
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RtlInitUnicodeString(&ValueName, L"ProcessorNameString");
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Status = NtSetValueKey(KeyHandle,
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&ValueName,
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0,
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REG_SZ,
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Data.Buffer,
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Data.Length + sizeof(UNICODE_NULL));
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/* ROS: Save a copy for Jira reporting */
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if (!RtlCreateUnicodeString(&KeRosProcessorName, Data.Buffer))
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{
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/* Do not fail for this */
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KeRosProcessorName.Length = 0;
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}
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/* Free the temporary buffer */
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RtlFreeUnicodeString(&Data);
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}
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}
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/* Check if we had a Vendor ID */
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if (Prcb->VendorString[0])
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{
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/* Convert it to Unicode */
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RtlInitAnsiString(&TempString, Prcb->VendorString);
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if (NT_SUCCESS(RtlAnsiStringToUnicodeString(&Data, &TempString, TRUE)))
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{
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/* Add it to the registry */
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RtlInitUnicodeString(&ValueName, L"VendorIdentifier");
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Status = NtSetValueKey(KeyHandle,
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&ValueName,
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0,
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REG_SZ,
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Data.Buffer,
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Data.Length + sizeof(UNICODE_NULL));
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|
|
/* Free the temporary buffer */
|
|
RtlFreeUnicodeString(&Data);
|
|
}
|
|
}
|
|
|
|
/* Check if we have features bits */
|
|
if (Prcb->FeatureBits)
|
|
{
|
|
/* Add them to the registry */
|
|
RtlInitUnicodeString(&ValueName, L"FeatureSet");
|
|
Status = NtSetValueKey(KeyHandle,
|
|
&ValueName,
|
|
0,
|
|
REG_DWORD,
|
|
&Prcb->FeatureBits,
|
|
sizeof(Prcb->FeatureBits));
|
|
}
|
|
|
|
/* Check if we detected the CPU Speed */
|
|
if (Prcb->MHz)
|
|
{
|
|
/* Add it to the registry */
|
|
RtlInitUnicodeString(&ValueName, L"~MHz");
|
|
Status = NtSetValueKey(KeyHandle,
|
|
&ValueName,
|
|
0,
|
|
REG_DWORD,
|
|
&Prcb->MHz,
|
|
sizeof(Prcb->MHz));
|
|
}
|
|
|
|
/* Check if we have an update signature */
|
|
if (Prcb->UpdateSignature.QuadPart)
|
|
{
|
|
/* Add it to the registry */
|
|
RtlInitUnicodeString(&ValueName, L"Update Signature");
|
|
Status = NtSetValueKey(KeyHandle,
|
|
&ValueName,
|
|
0,
|
|
REG_BINARY,
|
|
&Prcb->UpdateSignature,
|
|
sizeof(Prcb->UpdateSignature));
|
|
}
|
|
|
|
/* Close the processor handle */
|
|
NtClose(KeyHandle);
|
|
|
|
/* FIXME: Detect CPU mismatches */
|
|
}
|
|
}
|
|
|
|
/* Free the configuration data */
|
|
ExFreePoolWithTag(CmpConfigurationData, TAG_CM);
|
|
}
|
|
|
|
/* Open physical memory */
|
|
RtlInitUnicodeString(&SectionName, L"\\Device\\PhysicalMemory");
|
|
InitializeObjectAttributes(&ObjectAttributes,
|
|
&SectionName,
|
|
OBJ_CASE_INSENSITIVE,
|
|
NULL,
|
|
NULL);
|
|
Status = ZwOpenSection(&SectionHandle,
|
|
SECTION_ALL_ACCESS,
|
|
&ObjectAttributes);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
/* We failed, close all the opened handles and return */
|
|
// NtClose(KeyHandle);
|
|
NtClose(BiosHandle);
|
|
NtClose(SystemHandle);
|
|
/* 'Quickie' closes KeyHandle */
|
|
goto Quickie;
|
|
}
|
|
|
|
/* Map the first 1KB of memory to get the IVT */
|
|
ViewSize = PAGE_SIZE;
|
|
Status = ZwMapViewOfSection(SectionHandle,
|
|
NtCurrentProcess(),
|
|
&BaseAddress,
|
|
0,
|
|
ViewSize,
|
|
&ViewBase,
|
|
&ViewSize,
|
|
ViewUnmap,
|
|
MEM_DOS_LIM,
|
|
PAGE_READWRITE);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
/* Assume default */
|
|
VideoRomBase = 0xC0000;
|
|
}
|
|
else
|
|
{
|
|
/* Calculate the base address from the vector */
|
|
VideoRomBase = (*((PULONG)BaseAddress + 0x10) >> 12) & 0xFFFF0;
|
|
VideoRomBase += *((PULONG)BaseAddress + 0x10) & 0xFFF0;
|
|
|
|
/* Now get to the actual ROM Start and make sure it's not invalid*/
|
|
VideoRomBase &= 0xFFFF8000;
|
|
if (VideoRomBase < 0xC0000) VideoRomBase = 0xC0000;
|
|
|
|
/* And unmap the section */
|
|
ZwUnmapViewOfSection(NtCurrentProcess(), BaseAddress);
|
|
}
|
|
|
|
/* Allocate BIOS Version pp Buffer */
|
|
BiosVersion = ExAllocatePoolWithTag(PagedPool, PAGE_SIZE, TAG_CM);
|
|
|
|
/* Setup settings to map the 64K BIOS ROM */
|
|
BaseAddress = 0;
|
|
ViewSize = 16 * PAGE_SIZE;
|
|
ViewBase.LowPart = 0xF0000;
|
|
ViewBase.HighPart = 0;
|
|
|
|
/* Map it */
|
|
Status = ZwMapViewOfSection(SectionHandle,
|
|
NtCurrentProcess(),
|
|
&BaseAddress,
|
|
0,
|
|
ViewSize,
|
|
&ViewBase,
|
|
&ViewSize,
|
|
ViewUnmap,
|
|
MEM_DOS_LIM,
|
|
PAGE_READWRITE);
|
|
if (NT_SUCCESS(Status))
|
|
{
|
|
/* Scan the ROM to get the BIOS Date */
|
|
if (CmpGetBiosDate(BaseAddress, 16 * PAGE_SIZE, Buffer, TRUE))
|
|
{
|
|
/* Convert it to Unicode */
|
|
RtlInitAnsiString(&TempString, Buffer);
|
|
if (NT_SUCCESS(RtlAnsiStringToUnicodeString(&Data, &TempString, TRUE)))
|
|
{
|
|
/* Write the date into the registry */
|
|
RtlInitUnicodeString(&ValueName, L"SystemBiosDate");
|
|
Status = NtSetValueKey(SystemHandle,
|
|
&ValueName,
|
|
0,
|
|
REG_SZ,
|
|
Data.Buffer,
|
|
Data.Length + sizeof(UNICODE_NULL));
|
|
|
|
/* Free the string */
|
|
RtlFreeUnicodeString(&Data);
|
|
}
|
|
|
|
if (BiosHandle)
|
|
{
|
|
/* Get the BIOS Date Identifier */
|
|
RtlCopyMemory(Buffer, (PCHAR)BaseAddress + (16 * PAGE_SIZE - 11), 8);
|
|
Buffer[8] = ANSI_NULL;
|
|
|
|
/* Convert it to unicode */
|
|
RtlInitAnsiString(&TempString, Buffer);
|
|
Status = RtlAnsiStringToUnicodeString(&Data, &TempString, TRUE);
|
|
if (NT_SUCCESS(Status))
|
|
{
|
|
/* Save it to the registry */
|
|
Status = NtSetValueKey(BiosHandle,
|
|
&ValueName,
|
|
0,
|
|
REG_SZ,
|
|
Data.Buffer,
|
|
Data.Length + sizeof(UNICODE_NULL));
|
|
|
|
/* ROS: Save a copy for Jira reporting */
|
|
if (!RtlCreateUnicodeString(&KeRosBiosDate, Data.Buffer))
|
|
KeRosBiosDate.Length = 0;
|
|
|
|
/* Free the string */
|
|
RtlFreeUnicodeString(&Data);
|
|
}
|
|
|
|
/* Close the bios information handle */
|
|
NtClose(BiosHandle);
|
|
}
|
|
}
|
|
|
|
/* Get the BIOS Version */
|
|
if (CmpGetBiosVersion(BaseAddress, 16 * PAGE_SIZE, Buffer))
|
|
{
|
|
/* Start at the beginning of our buffer */
|
|
CurrentVersion = BiosVersion;
|
|
do
|
|
{
|
|
/* Convert to Unicode */
|
|
RtlInitAnsiString(&TempString, Buffer);
|
|
Status = RtlAnsiStringToUnicodeString(&Data, &TempString, TRUE);
|
|
if (!NT_SUCCESS(Status))
|
|
break;
|
|
|
|
/* Calculate the length of this string and copy it in */
|
|
Length = Data.Length + sizeof(UNICODE_NULL);
|
|
RtlMoveMemory(CurrentVersion, Data.Buffer, Length);
|
|
|
|
/* Free the unicode string */
|
|
RtlFreeUnicodeString(&Data);
|
|
|
|
/* Update the total length and see if we're out of space */
|
|
TotalLength += Length;
|
|
if (TotalLength + 256 + sizeof(UNICODE_NULL) > PAGE_SIZE)
|
|
{
|
|
/* One more string would push us out, so stop here */
|
|
break;
|
|
}
|
|
|
|
/* Go to the next string inside the multi-string buffer */
|
|
CurrentVersion += Length;
|
|
|
|
/* Query the next BIOS Version */
|
|
} while (CmpGetBiosVersion(NULL, 0, Buffer));
|
|
|
|
/* Check if we found any strings at all */
|
|
if (TotalLength)
|
|
{
|
|
/* Add the final null-terminator */
|
|
*(PWSTR)CurrentVersion = UNICODE_NULL;
|
|
TotalLength += sizeof(UNICODE_NULL);
|
|
|
|
/* Write the BIOS Version to the registry */
|
|
RtlInitUnicodeString(&ValueName, L"SystemBiosVersion");
|
|
Status = NtSetValueKey(SystemHandle,
|
|
&ValueName,
|
|
0,
|
|
REG_MULTI_SZ,
|
|
BiosVersion,
|
|
TotalLength);
|
|
|
|
/* ROS: Save a copy for Jira reporting */
|
|
if (!RtlCreateUnicodeString(&KeRosBiosVersion, (PWCH)BiosVersion))
|
|
KeRosBiosVersion.Length = 0;
|
|
}
|
|
}
|
|
|
|
/* Unmap the section */
|
|
ZwUnmapViewOfSection(NtCurrentProcess(), BaseAddress);
|
|
}
|
|
|
|
/* Now prepare for Video BIOS Mapping of 32KB */
|
|
BaseAddress = 0;
|
|
ViewSize = 8 * PAGE_SIZE;
|
|
ViewBase.QuadPart = VideoRomBase;
|
|
|
|
/* Map it */
|
|
Status = ZwMapViewOfSection(SectionHandle,
|
|
NtCurrentProcess(),
|
|
&BaseAddress,
|
|
0,
|
|
ViewSize,
|
|
&ViewBase,
|
|
&ViewSize,
|
|
ViewUnmap,
|
|
MEM_DOS_LIM,
|
|
PAGE_READWRITE);
|
|
if (NT_SUCCESS(Status))
|
|
{
|
|
/* Scan the ROM to get the BIOS Date */
|
|
if (CmpGetBiosDate(BaseAddress, 8 * PAGE_SIZE, Buffer, FALSE))
|
|
{
|
|
/* Convert it to Unicode */
|
|
RtlInitAnsiString(&TempString, Buffer);
|
|
if (NT_SUCCESS(RtlAnsiStringToUnicodeString(&Data, &TempString, TRUE)))
|
|
{
|
|
/* Write the date into the registry */
|
|
RtlInitUnicodeString(&ValueName, L"VideoBiosDate");
|
|
Status = NtSetValueKey(SystemHandle,
|
|
&ValueName,
|
|
0,
|
|
REG_SZ,
|
|
Data.Buffer,
|
|
Data.Length + sizeof(UNICODE_NULL));
|
|
|
|
/* ROS: Save a copy for Jira reporting */
|
|
if (!RtlCreateUnicodeString(&KeRosVideoBiosDate, Data.Buffer))
|
|
KeRosVideoBiosDate.Length = 0;
|
|
|
|
/* Free the string */
|
|
RtlFreeUnicodeString(&Data);
|
|
}
|
|
}
|
|
|
|
/* Get the Video BIOS Version */
|
|
if (CmpGetBiosVersion(BaseAddress, 8 * PAGE_SIZE, Buffer))
|
|
{
|
|
/* Start at the beginning of our buffer */
|
|
CurrentVersion = BiosVersion;
|
|
do
|
|
{
|
|
/* Convert to Unicode */
|
|
RtlInitAnsiString(&TempString, Buffer);
|
|
if (!NT_SUCCESS(RtlAnsiStringToUnicodeString(&Data, &TempString, TRUE)))
|
|
break;
|
|
|
|
/* Calculate the length of this string and copy it in */
|
|
Length = Data.Length + sizeof(UNICODE_NULL);
|
|
RtlMoveMemory(CurrentVersion, Data.Buffer, Length);
|
|
|
|
/* Free the unicode string */
|
|
RtlFreeUnicodeString(&Data);
|
|
|
|
/* Update the total length and see if we're out of space */
|
|
TotalLength += Length;
|
|
if (TotalLength + 256 + sizeof(UNICODE_NULL) > PAGE_SIZE)
|
|
{
|
|
/* One more string would push us out, so stop here */
|
|
break;
|
|
}
|
|
|
|
/* Go to the next string inside the multi-string buffer */
|
|
CurrentVersion += Length;
|
|
|
|
/* Query the next BIOS Version */
|
|
} while (CmpGetBiosVersion(NULL, 0, Buffer));
|
|
|
|
/* Check if we found any strings at all */
|
|
if (TotalLength)
|
|
{
|
|
/* Add the final null-terminator */
|
|
*(PWSTR)CurrentVersion = UNICODE_NULL;
|
|
TotalLength += sizeof(UNICODE_NULL);
|
|
|
|
/* Write the BIOS Version to the registry */
|
|
RtlInitUnicodeString(&ValueName, L"VideoBiosVersion");
|
|
Status = NtSetValueKey(SystemHandle,
|
|
&ValueName,
|
|
0,
|
|
REG_MULTI_SZ,
|
|
BiosVersion,
|
|
TotalLength);
|
|
|
|
/* ROS: Save a copy for Jira reporting */
|
|
if (!RtlCreateUnicodeString(&KeRosVideoBiosVersion, (PWCH)BiosVersion))
|
|
KeRosVideoBiosVersion.Length = 0;
|
|
}
|
|
}
|
|
|
|
/* Unmap the section */
|
|
ZwUnmapViewOfSection(NtCurrentProcess(), BaseAddress);
|
|
}
|
|
|
|
/* Close the section */
|
|
ZwClose(SectionHandle);
|
|
|
|
/* Free the BIOS version string buffer */
|
|
if (BiosVersion) ExFreePoolWithTag(BiosVersion, TAG_CM);
|
|
|
|
Quickie:
|
|
/* Close the processor handle */
|
|
NtClose(KeyHandle);
|
|
return STATUS_SUCCESS;
|
|
}
|