195 lines
3.5 KiB
C
195 lines
3.5 KiB
C
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/*++
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Copyright (c) 1992 Microsoft Corporation
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Module Name:
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detecthw.c
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Abstract:
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Routines for determining which drivers/HAL need to be loaded.
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Author:
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John Vert (jvert) 20-Oct-1993
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Revision History:
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--*/
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#include "haldtect.h"
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#include <stdlib.h>
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#ifndef ARCI386
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//
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// detection function prototypes
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//
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ULONG DetectSystemPro(PBOOLEAN);
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ULONG DetectMPACPI(PBOOLEAN);
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ULONG DetectApicACPI(PBOOLEAN);
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ULONG DetectPicACPI(PBOOLEAN);
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ULONG DetectUPMPS(PBOOLEAN);
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ULONG DetectMPS(PBOOLEAN);
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ULONG DetectTrue(PBOOLEAN);
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typedef struct _HAL_DETECT_ENTRY {
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ULONG (*DetectFunction)(PBOOLEAN);
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PCHAR Shortname;
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} HAL_DETECT_ENTRY, *PHAL_DETECT_ENTRY;
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HAL_DETECT_ENTRY DetectHal[] = {
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// First check for a HAL to match some specific hardware.
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DetectMPACPI, "acpiapic_mp",
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DetectApicACPI, "acpiapic_up",
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DetectPicACPI, "acpipic_up",
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DetectMPS, "mps_mp",
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DetectUPMPS, "mps_up",
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DetectSystemPro, "syspro_mp", // check SystemPro last
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// Use default hal for given bus type...
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DetectTrue, "e_isa_up",
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0, NULL, NULL
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};
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PCHAR
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SlDetectHal(
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VOID
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)
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/*++
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Routine Description:
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Determines which HAL to load and returns the filename.
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Arguments:
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None.
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Return Value:
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PCHAR - pointer to the filename of the HAL to be loaded.
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--*/
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{
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PCONFIGURATION_COMPONENT_DATA Adapter;
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BOOLEAN IsMpMachine;
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ULONG i;
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PCHAR MachineShortname;
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//
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// Figure out machine and hal type.
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//
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for (i=0;;i++) {
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if (DetectHal[i].DetectFunction == NULL) {
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//
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// We reached the end of the list without
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// figuring it out!
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//
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SlFatalError(i);
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return(NULL);
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}
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IsMpMachine = FALSE;
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if ((DetectHal[i].DetectFunction)(&IsMpMachine) != 0) {
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//
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// Found the correct HAL.
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//
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MachineShortname = DetectHal[i].Shortname;
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break;
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}
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}
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return(MachineShortname);
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}
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ULONG
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DetectTrue(
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OUT PBOOLEAN IsMP
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)
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/*++
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Routine Description:
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To Return TRUE
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Return Value:
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TRUE
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--*/
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{
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return TRUE;
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}
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#else // ARCI386 path...
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PVOID InfFile;
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PVOID WinntSifHandle;
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PCHAR
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SlDetectHal(
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VOID
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)
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/*++
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Routine Description:
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Determines the canonical short machine name for the HAL to be loaded for
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this machine.
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It does this by enumerating the [Map.Computer] section of the INF file and
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comparing the strings there with the computer description in the ARC tree.
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[Map.Computer]
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msjazz_up = *Jazz
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desksta1_up = "DESKTECH-ARCStation I"
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pica61_up = "PICA-61"
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duo_mp = *Duo
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[Map.Computer]
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DECjensen = "DEC-20Jensen"
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DECjensen = "DEC-10Jensen"
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Arguments:
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None.
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Return Value:
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PCHAR - pointer to canonical shortname for the machine.
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NULL - the type of machine could not be determined.
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--*/
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{
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PCONFIGURATION_COMPONENT_DATA Node;
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PCHAR MachineName;
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//
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// Find the system description node
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//
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Node = KeFindConfigurationEntry(BlLoaderBlock->ConfigurationRoot,
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SystemClass,
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ArcSystem,
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NULL);
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if (Node==NULL) {
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SlError(0);
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return(NULL);
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}
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MachineName = Node->ComponentEntry.Identifier;
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MachineName = (MachineName ? SlSearchSection("Map.Computer", MachineName) : NULL);
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return(MachineName);
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}
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#endif
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