443 lines
11 KiB
C
443 lines
11 KiB
C
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/*++
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Copyright (c) 1993 Microsoft Corporation
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Module Name:
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sploaddrv.c
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Abstract:
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Routines to load sets of device drivers for use during text setup.
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Author:
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Ted Miller (tedm) 13-November-1993
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Revision History:
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--*/
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#include "spprecmp.h"
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#pragma hdrstop
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//
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// Define type of routine used by the device driver set loader.
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// Before each driver is loaded, this routine is called with
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// a flag indicating whether the machine is an MCA machine and
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// the shortname of the driver about to be loaded. If this routine
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// returns FALSE, the driver is not loaded. If it returns TRUE,
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// the driver is loaded.
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//
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typedef
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BOOLEAN
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(*PDRIVER_VERIFY_LOAD_ROUTINE) (
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IN PVOID SifHandle,
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IN BOOLEAN IsMcaMachine,
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IN PWSTR DriverShortname
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);
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BOOLEAN
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pSpVerifyLoadDiskDrivers(
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IN PVOID SifHandle,
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IN BOOLEAN IsMcaMachine,
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IN PWSTR DriverShortname
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)
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{
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UNREFERENCED_PARAMETER(SifHandle);
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//
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// Don't load fat if setupldr loaded floppy drivers.
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//
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if(!_wcsicmp(DriverShortname,L"Fat") && SetupParameters.LoadedFloppyDrivers) {
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return(FALSE);
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}
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//
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// On an MCA machine, don't load atdisk.
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// On a non-MCA machine, don't load abiosdsk.
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//
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if(( IsMcaMachine && !_wcsicmp(DriverShortname,L"atdisk"))
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|| (!IsMcaMachine && !_wcsicmp(DriverShortname,L"abiosdsk")))
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{
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return(FALSE);
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}
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//
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// If we get this far, the driver should be loaded.
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//
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return(TRUE);
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}
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VOID
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SpLoadDriverSet(
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IN PVOID SifHandle,
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IN PWSTR SifSectionName,
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IN PWSTR SourceDevicePath,
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IN PWSTR DirectoryOnSourceDevice,
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IN PDRIVER_VERIFY_LOAD_ROUTINE VerifyLoad OPTIONAL
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)
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/*++
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Routine Description:
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Load a set of device drivers listed in a section in the setup
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information file. The section is expected to be in the following form:
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[SectionName.Load]
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DriverShortname = DriverFilename
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DriverShortname = DriverFilename
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DriverShortname = DriverFilename
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etc.
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[SectionName]
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DriverShortname = Description
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DriverShortname = Description
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DriverShortname = Description
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etc.
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The drivers will be loaded from the setup boot media, and errors
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loading the drivers will be ignored.
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Before loading each driver, a callback routine is called to verify
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that the driver should actually be loaded. This allows the caller
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to gain a fine degree of control over which drivers are loaded.
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Arguments:
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SifHandle - supplies handle to loaded setup information file.
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SifSectionName - supplies name of section in setup information file
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listing drivers to be laoded.
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SourceDevicePath - supplies the device path in the nt namespace of
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the device from which the drivers are to be loaded.
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DirectoryOnSourceDevice - supplies the directory on the source device
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from which the drivers are to be loaded.
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VerifyLoad - if specified, supplies the address of a routine to be
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called before each driver is loaded. The routine takes a flag
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indicating whether the machine is an MCA machine, and the driver
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shortname. If the routine returns false, the driver is not loaded.
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If this parameter is not specified, all drivers in the section
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will be loaded.
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Return Value:
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None.
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--*/
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{
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BOOLEAN IsMcaMachine;
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ULONG d,DriverLoadCount;
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PWSTR DiskDesignator,PreviousDiskDesignator;
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PWSTR DriverShortname,DriverFilename,DriverDescription;
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PWSTR LoadSectionName;
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NTSTATUS Status;
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CLEAR_CLIENT_SCREEN();
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SpDisplayStatusText(SP_STAT_PLEASE_WAIT,DEFAULT_STATUS_ATTRIBUTE);
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//
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// Form the .load section name.
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//
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LoadSectionName = SpMemAlloc((wcslen(SifSectionName)*sizeof(WCHAR))+sizeof(L".Load"));
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wcscpy(LoadSectionName,SifSectionName);
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wcscat(LoadSectionName,L".Load");
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IsMcaMachine = FALSE;
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//
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// Set up some initial state.
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//
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PreviousDiskDesignator = L"";
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//
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// Determine the number of drivers to be loaded.
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//
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DriverLoadCount = SpCountLinesInSection(SifHandle,LoadSectionName);
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for(d=0; d<DriverLoadCount; d++) {
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PWSTR p;
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//
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// Get the driver shortname.
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//
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DriverShortname = SpGetKeyName(SifHandle,LoadSectionName,d);
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if(!DriverShortname) {
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SpFatalSifError(SifHandle,LoadSectionName,NULL,d,(ULONG)(-1));
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}
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//
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// Determine whether we are really supposed to load this driver.
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//
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if((p = SpGetSectionLineIndex(SifHandle,LoadSectionName,d,2)) && !_wcsicmp(p,L"noload")) {
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continue;
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}
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if(VerifyLoad && !VerifyLoad(SifHandle,IsMcaMachine,DriverShortname)) {
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continue;
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}
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//
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// Get a human-readable description for this driver.
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//
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DriverDescription = SpGetSectionLineIndex(SifHandle,SifSectionName,d,0);
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if(!DriverDescription) {
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SpFatalSifError(SifHandle,SifSectionName,NULL,d,0);
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}
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//
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// Get the driver filename.
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//
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DriverFilename = SpGetSectionLineIndex(SifHandle,LoadSectionName,d,0);
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if(!DriverFilename) {
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SpFatalSifError(SifHandle,LoadSectionName,NULL,d,0);
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}
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//
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// Determine the disk on which this driver resides.
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//
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DiskDesignator = SpLookUpValueForFile(
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SifHandle,
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DriverFilename,
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INDEX_WHICHBOOTMEDIA,
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TRUE
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);
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//
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// Prompt for the disk containing the driver.
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//
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retryload:
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if(_wcsicmp(DiskDesignator,PreviousDiskDesignator)) {
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SpPromptForSetupMedia(
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SifHandle,
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DiskDesignator,
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SourceDevicePath
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);
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PreviousDiskDesignator = DiskDesignator;
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CLEAR_CLIENT_SCREEN();
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SpDisplayStatusText(SP_STAT_PLEASE_WAIT,DEFAULT_STATUS_ATTRIBUTE);
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}
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//
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// Attempt to load the driver.
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//
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Status = SpLoadDeviceDriver(
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DriverDescription,
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SourceDevicePath,
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DirectoryOnSourceDevice,
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DriverFilename
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);
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if(Status == STATUS_NO_MEDIA_IN_DEVICE) {
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PreviousDiskDesignator = L"";
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goto retryload;
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}
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}
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SpMemFree(LoadSectionName);
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}
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VOID
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SpLoadScsiClassDrivers(
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IN PVOID SifHandle,
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IN PWSTR SourceDevicePath,
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IN PWSTR DirectoryOnSourceDevice
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)
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/*++
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Routine Description:
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Load scsi class drivers if setupldr has not already loaded them
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and there are any miniport drivers loaded.
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The drivers to be loaded are listed in [ScsiClass].
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The section is expected to be in the following form:
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[ScsiClass]
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cdrom = "SCSI CD-ROM" ,scsicdrm.sys
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floppy = "SCSI Floppy Disk",scsiflop.sys
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disk = "SCSI Disk" ,scsidisk.sys
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The drivers will be loaded from the setup boot media, and errors
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loading the drivers will be ignored.
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Arguments:
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SifHandle - supplies handle to loaded setup information file.
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SourceDevicePath - supplies the device path in the nt namespace of
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the device from which the drivers are to be loaded.
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DirectoryOnSourceDevice - supplies the directory on the source device
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where the drivers are to be found.
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Return Value:
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None.
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--*/
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{
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//
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// If setupldr loaded scsi drivers, nothing to do.
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// If there are no miniport drivers loaded, nothing to do.
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//
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if(!SetupParameters.LoadedScsi && LoadedScsiMiniportCount) {
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SpLoadDriverSet(
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SifHandle,
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SIF_SCSICLASSDRIVERS,
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SourceDevicePath,
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DirectoryOnSourceDevice,
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NULL
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);
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}
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}
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VOID
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SpLoadDiskDrivers(
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IN PVOID SifHandle,
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IN PWSTR SourceDevicePath,
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IN PWSTR DirectoryOnSourceDevice
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)
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/*++
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Routine Description:
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Load (non-scsi) disk class drivers and disk filesystems
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if setupldr has not already loaded them.
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The drivers to be loaded are listed in [DiskDrivers] and [FileSystems].
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The section is expected to be in the following form:
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[DiskDrivers]
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atdisk = "ESDI/IDE Hard DIsk",atdisk.sys
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abiosdsk = "Micro Channel Hard Disk",abiosdsk.sys
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[FileSystems]
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fat = "FAT File System",fastfat.sys
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ntfs = "Windows NT File System (NTFS)",ntfs.sys
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The drivers will be loaded from the setup boot media, and errors
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loading the drivers will be ignored.
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On MCA machines, atdisk will not be loaded.
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On non-MCA machines, abiosdsk will not be loaded.
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Arguments:
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SifHandle - supplies handle to loaded setup information file.
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SourceDevicePath - supplies the device path in the nt namespace of
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the device from which the drivers are to be loaded.
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DirectoryOnSourceDevice - supplies the directory on the source device
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where the drivers are to be found.
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Return Value:
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None.
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--*/
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{
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//
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// If setupldr loaded disk drivers, nothing to do.
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//
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if(!SetupParameters.LoadedDiskDrivers) {
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SpLoadDriverSet(
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SifHandle,
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SIF_DISKDRIVERS,
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SourceDevicePath,
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DirectoryOnSourceDevice,
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pSpVerifyLoadDiskDrivers
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);
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}
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//
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// If setupldr loaded file systems, nothing to do.
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//
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if(!SetupParameters.LoadedFileSystems) {
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SpLoadDriverSet(
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SifHandle,
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SIF_FILESYSTEMS,
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SourceDevicePath,
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DirectoryOnSourceDevice,
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pSpVerifyLoadDiskDrivers
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);
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}
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}
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VOID
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SpLoadCdRomDrivers(
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IN PVOID SifHandle,
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IN PWSTR SourceDevicePath,
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IN PWSTR DirectoryOnSourceDevice
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)
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/*++
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Routine Description:
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Load the cd-rom filesystem if setupldr has not already loaded it.
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The drivers to be loaded are listed in [CdRomDrivers].
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The section is expected to be in the following form:
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[CdRomDrivers]
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cdfs = "CD-ROM File System",cdfs.sys
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The drivers will be loaded from the setup boot media, and errors
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loading the drivers will be ignored.
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Arguments:
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SifHandle - supplies handle to loaded setup information file.
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SourceDevicePath - supplies the device path in the nt namespace of
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the device from which the drivers are to be loaded.
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DirectoryOnSourceDevice - supplies the directory on the source device
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where the drivers are to be found.
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Return Value:
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None.
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--*/
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{
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//
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// If setupldr loaded cd-rom drivers, nothing to do.
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//
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|
|
if(!SetupParameters.LoadedCdRomDrivers) {
|
||
|
|
|
||
|
|
SpLoadDriverSet(
|
||
|
|
SifHandle,
|
||
|
|
SIF_CDROMDRIVERS,
|
||
|
|
SourceDevicePath,
|
||
|
|
DirectoryOnSourceDevice,
|
||
|
|
NULL
|
||
|
|
);
|
||
|
|
}
|
||
|
|
}
|