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https://github.com/reactos/reactos.git
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- Implement first part of setupldr:
* Constructing boot / system paths * Opening boot device * Getting options string * Loading kernel, hal and kdcom.dll, and their dependencies svn path=/trunk/; revision=40028
This commit is contained in:
Aleksey Bragin
parent
ae297f9f05
commit
ff79c83048
1 changed files with 199 additions and 1 deletions
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@ -23,7 +23,205 @@
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#include <ndk/ldrtypes.h>
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#include <ndk/ldrtypes.h>
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#include <debug.h>
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#include <debug.h>
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// TODO: Move to .h
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VOID AllocateAndInitLPB(PLOADER_PARAMETER_BLOCK *OutLoaderBlock);
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BOOLEAN WinLdrLoadBootDrivers(PLOADER_PARAMETER_BLOCK LoaderBlock, LPSTR BootPath);
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void WinLdrSetupForNt(PLOADER_PARAMETER_BLOCK LoaderBlock,
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PVOID *GdtIdt,
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ULONG *PcrBasePage,
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ULONG *TssBasePage);
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VOID
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WinLdrInitializePhase1(PLOADER_PARAMETER_BLOCK LoaderBlock,
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PCHAR Options,
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PCHAR SystemPath,
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PCHAR BootPath,
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USHORT VersionToBoot);
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//FIXME: Do a better way to retrieve Arc disk information
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extern ULONG reactos_disk_count;
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extern ARC_DISK_SIGNATURE reactos_arc_disk_info[];
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extern char reactos_arc_strings[32][256];
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extern BOOLEAN UseRealHeap;
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extern ULONG LoaderPagesSpanned;
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VOID LoadReactOSSetup2(VOID)
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VOID LoadReactOSSetup2(VOID)
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{
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{
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}
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CHAR SystemPath[512], SearchPath[512];
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CHAR FileName[512];
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CHAR BootPath[512];
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LPCSTR BootOptions;
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PVOID NtosBase = NULL, HalBase = NULL, KdComBase = NULL;
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BOOLEAN Status;
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ULONG BootDevice;
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ULONG i, ErrorLine;
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HINF InfHandle;
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INFCONTEXT InfContext;
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PLOADER_PARAMETER_BLOCK LoaderBlock, LoaderBlockVA;
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KERNEL_ENTRY_POINT KiSystemStartup;
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PLDR_DATA_TABLE_ENTRY KernelDTE, HalDTE, KdComDTE = NULL;
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// Mm-related things
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PVOID GdtIdt;
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ULONG PcrBasePage=0;
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ULONG TssBasePage=0;
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LPCSTR SourcePath;
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LPCSTR SourcePaths[] =
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{
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"", /* Only for floppy boot */
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#if defined(_M_IX86)
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"\\I386",
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#elif defined(_M_MPPC)
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"\\PPC",
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#elif defined(_M_MRX000)
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"\\MIPS",
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#endif
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"\\reactos",
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NULL
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};
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/* Get boot device number */
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MachDiskGetBootDevice(&BootDevice);
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/* Open 'txtsetup.sif' from any of source paths */
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for (i = MachDiskBootingFromFloppy() ? 0 : 1; ; i++)
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{
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SourcePath = SourcePaths[i];
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if (!SourcePath)
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{
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printf("Failed to open 'txtsetup.sif'\n");
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return;
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}
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sprintf(FileName,"%s\\txtsetup.sif", SourcePath);
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if (InfOpenFile (&InfHandle, FileName, &ErrorLine))
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break;
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}
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/* If we didn't find it anywhere, then just use root */
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if (!*SourcePath)
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SourcePath = "\\";
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/* Load options */
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if (!InfFindFirstLine(InfHandle,
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"SetupData",
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"OsLoadOptions",
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&InfContext))
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{
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printf("Failed to find 'SetupData/OsLoadOptions'\n");
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return;
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}
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if (!InfGetDataField (&InfContext, 1, &BootOptions))
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{
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printf("Failed to get load options\n");
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return;
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}
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/* Save source path */
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strcpy(BootPath, SourcePath);
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SetupUiInitialize();
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UiDrawStatusText("");
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UiDrawStatusText("Detecting Hardware...");
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/* Let user know we started loading */
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UiDrawStatusText("Loading...");
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/* Try to open system drive */
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FsOpenBootVolume();
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/* Append a backslash to the bootpath if needed */
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if ((strlen(BootPath)==0) || BootPath[strlen(BootPath)] != '\\')
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{
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strcat(BootPath, "\\");
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}
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/* Construct the system path */
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MachDiskGetBootPath(SystemPath, sizeof(SystemPath));
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strcat(SystemPath, SourcePath);
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DPRINTM(DPRINT_WINDOWS,"SystemRoot: '%s', SystemPath: '%s'\n", BootPath, SystemPath);
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/* Allocate and minimalistic-initialize LPB */
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AllocateAndInitLPB(&LoaderBlock);
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/* Detect hardware */
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UseRealHeap = TRUE;
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LoaderBlock->ConfigurationRoot = MachHwDetect();
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/* Load kernel */
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strcpy(FileName, BootPath);
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strcat(FileName, "NTOSKRNL.EXE");
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Status = WinLdrLoadImage(FileName, LoaderSystemCode, &NtosBase);
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DPRINTM(DPRINT_WINDOWS, "Ntos loaded with status %d at %p\n", Status, NtosBase);
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/* Load HAL */
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strcpy(FileName, BootPath);
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strcat(FileName, "HAL.DLL");
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Status = WinLdrLoadImage(FileName, LoaderHalCode, &HalBase);
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DPRINTM(DPRINT_WINDOWS, "HAL loaded with status %d at %p\n", Status, HalBase);
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/* Load kernel-debugger support dll */
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strcpy(FileName, BootPath);
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strcat(FileName, "KDCOM.DLL");
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Status = WinLdrLoadImage(FileName, LoaderBootDriver, &KdComBase);
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DPRINTM(DPRINT_WINDOWS, "KdCom loaded with status %d at %p\n", Status, KdComBase);
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/* Allocate data table entries for above-loaded modules */
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WinLdrAllocateDataTableEntry(LoaderBlock, "ntoskrnl.exe",
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"NTOSKRNL.EXE", NtosBase, &KernelDTE);
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WinLdrAllocateDataTableEntry(LoaderBlock, "hal.dll",
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"HAL.DLL", HalBase, &HalDTE);
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WinLdrAllocateDataTableEntry(LoaderBlock, "kdcom.dll",
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"KDCOM.DLL", KdComBase, &KdComDTE);
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/* Load all referenced DLLs for kernel, HAL and kdcom.dll */
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strcpy(SearchPath, BootPath);
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WinLdrScanImportDescriptorTable(LoaderBlock, SearchPath, KernelDTE);
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WinLdrScanImportDescriptorTable(LoaderBlock, SearchPath, HalDTE);
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if (KdComDTE)
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WinLdrScanImportDescriptorTable(LoaderBlock, SearchPath, KdComDTE);
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/* Load Hive, and then NLS data, OEM font, and prepare boot drivers list */
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//Status = WinLdrLoadAndScanSystemHive(LoaderBlock, BootPath);
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DPRINTM(DPRINT_WINDOWS, "SYSTEM hive loaded and scanned with status %d\n", Status);
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/* Load boot drivers */
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//Status = WinLdrLoadBootDrivers(LoaderBlock, BootPath);
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DPRINTM(DPRINT_WINDOWS, "Boot drivers loaded with status %d\n", Status);
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/* Alloc PCR, TSS, do magic things with the GDT/IDT */
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WinLdrSetupForNt(LoaderBlock, &GdtIdt, &PcrBasePage, &TssBasePage);
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/* Initialize Phase 1 - no drivers loading anymore */
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WinLdrInitializePhase1(LoaderBlock, (PCHAR)BootOptions, SystemPath, BootPath, _WIN32_WINNT_WS03);
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/* Save entry-point pointer and Loader block VAs */
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KiSystemStartup = (KERNEL_ENTRY_POINT)KernelDTE->EntryPoint;
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LoaderBlockVA = PaToVa(LoaderBlock);
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/* "Stop all motors", change videomode */
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MachPrepareForReactOS(FALSE);
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/* Debugging... */
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//DumpMemoryAllocMap();
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/* Turn on paging mode of CPU*/
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WinLdrTurnOnPaging(LoaderBlock, PcrBasePage, TssBasePage, GdtIdt);
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/* Save final value of LoaderPagesSpanned */
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LoaderBlock->Extension->LoaderPagesSpanned = LoaderPagesSpanned;
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DPRINTM(DPRINT_WINDOWS, "Hello from paged mode, KiSystemStartup %p, LoaderBlockVA %p!\n",
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KiSystemStartup, LoaderBlockVA);
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//WinLdrpDumpMemoryDescriptors(LoaderBlockVA);
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//WinLdrpDumpBootDriver(LoaderBlockVA);
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//WinLdrpDumpArcDisks(LoaderBlockVA);
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/* Pass control */
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(*KiSystemStartup)(LoaderBlockVA);
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return;
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}
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