127 lines
2 KiB
C
127 lines
2 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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config.c
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Abstract:
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This module contains code for interpreting and manipulating the ARC
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firmware configuration tree in various ways.
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Author:
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John Vert (jvert) 7-Oct-1993
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Environment:
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Runs in the ARC environment.
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Revision History:
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--*/
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#include "setupldr.h"
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#include "stdio.h"
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#define MAX_FLOPPIES 4
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PCONFIGURATION_COMPONENT_DATA FloppyData[MAX_FLOPPIES];
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ULONG NumFloppies=0;
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//
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// definition for function callbacks
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//
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//
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// Local prototypes
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//
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BOOLEAN
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EnumerateFloppies(
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IN PCONFIGURATION_COMPONENT_DATA ConfigData
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);
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BOOLEAN
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SlFindFloppy(
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IN ULONG FloppyNumber,
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OUT PCHAR ArcName
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)
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/*++
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Routine Description:
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Given a floppy number (0, 1, etc.) this routine computes the appropriate
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ARC name.
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Arguments:
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FloppyNumber - Supplies the floppy number.
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ArcName - Returns the ARC name of the specified floppy device
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Return Value:
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TRUE - Floppy exists in the ARC firmware tree.
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FALSE - Floppy was not found.
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--*/
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{
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if (NumFloppies==0) {
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BlSearchConfigTree(BlLoaderBlock->ConfigurationRoot,
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PeripheralClass,
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FloppyDiskPeripheral,
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(ULONG)-1,
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EnumerateFloppies);
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}
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if (FloppyNumber >= NumFloppies) {
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SlFatalError(SL_FLOPPY_NOT_FOUND,NumFloppies,FloppyNumber);
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}
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BlGetPathnameFromComponent(FloppyData[FloppyNumber],
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ArcName);
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return(TRUE);
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}
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BOOLEAN
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EnumerateFloppies(
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IN PCONFIGURATION_COMPONENT_DATA ConfigData
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)
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/*++
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Routine Description:
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Callback routine for enumerating all the floppies in the ARC config tree.
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Arguments:
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ConfigData - Supplies a pointer to the floppies ARC component data.
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Return Value:
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TRUE - continue searching
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FALSE - stop searching tree.
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--*/
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{
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if (NumFloppies == MAX_FLOPPIES) {
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return(FALSE);
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}
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FloppyData[NumFloppies++] = ConfigData;
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return(TRUE);
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}
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