hwapm.c File Reference

#include <freeldr.h>
#include <debug.h>

Include dependency graph for hwapm.c:

Go to the source code of this file.

Functions
	DBG_DEFAULT_CHANNEL (HWDETECT)
static BOOLEAN	FindApmBios (VOID)
VOID	DetectApmBios (PCONFIGURATION_COMPONENT_DATA SystemKey, ULONG *BusNumber)

Function Documentation

DBG_DEFAULT_CHANNEL()

DBG_DEFAULT_CHANNEL

(

HWDETECT

)

DetectApmBios()

VOID DetectApmBios	(	PCONFIGURATION_COMPONENT_DATA	SystemKey,
		ULONG *	BusNumber
	)

Definition at line 46 of file hwapm.c.

{
    PCONFIGURATION_COMPONENT_DATA BiosKey;
    PCM_PARTIAL_RESOURCE_LIST PartialResourceList;
    ULONG Size;

    if (!FindApmBios())
        return;

    Size = sizeof(CM_PARTIAL_RESOURCE_LIST) -
           sizeof(CM_PARTIAL_RESOURCE_DESCRIPTOR);

    /* Set 'Configuration Data' value */
    PartialResourceList = FrLdrHeapAlloc(Size, TAG_HW_RESOURCE_LIST);
    if (PartialResourceList == NULL)
    {
        ERR("Failed to allocate resource descriptor\n");
        return;
    }
    RtlZeroMemory(PartialResourceList, Size);
    PartialResourceList->Version = 0;
    PartialResourceList->Revision = 0;
    PartialResourceList->Count = 0;

    /* FIXME: Add configuration data */

    /* Create new bus key */
    FldrCreateComponentKey(SystemKey,
                           AdapterClass,
                           MultiFunctionAdapter,
                           0x0,
                           0,
                           0xFFFFFFFF,
                           "APM",
                           PartialResourceList,
                           Size,
                           &BiosKey);

    /* Increment bus number */
    (*BusNumber)++;
}

Referenced by Pc98HwDetect(), and PcHwDetect().

FindApmBios()

static BOOLEAN FindApmBios ( VOID  )

static

Definition at line 14 of file hwapm.c.

{
    REGS RegsIn, RegsOut;

    /* APM BIOS - Installation check */
#if defined(SARCH_PC98)
    RegsIn.w.ax = 0x9A00;
    RegsIn.w.bx = 0x0000;
    Int386(0x1F, &RegsIn, &RegsOut);
#else
    RegsIn.w.ax = 0x5300;
    RegsIn.w.bx = 0x0000;
    Int386(0x15, &RegsIn, &RegsOut);
#endif
    if (INT386_SUCCESS(RegsOut) && RegsOut.w.bx == 'PM')
    {
        TRACE("Found APM BIOS\n");
        TRACE("AH: %x\n", RegsOut.b.ah);
        TRACE("AL: %x\n", RegsOut.b.al);
        TRACE("BH: %x\n", RegsOut.b.bh);
        TRACE("BL: %x\n", RegsOut.b.bl);
        TRACE("CX: %x\n", RegsOut.w.cx);

        return TRUE;
    }

    TRACE("No APM BIOS found\n");

    return FALSE;
}

Referenced by DetectApmBios().