oemboot.c

来自「WinCE 3.0 BSP, 包含Inter SA1110, Intel_815」· C语言 代码 · 共 45 行

#include <windows.h>
#include <blcommon.h>
#include "bootldr.h"

#define BOOT_LOADER
#include "..\..\kernel\hal\debug.c"

CHAR FwGetChar(void)
{
    int nVal;

    while((nVal = OEMReadDebugByte()) == OEM_DEBUG_READ_NODATA)
    {
        ;
    }

    if (nVal == OEM_DEBUG_COM_ERROR)
        nVal = 0;

    return((CHAR)nVal);
}

void FwPutChar(CHAR c)
{
    OEMWriteDebugByte(c);
}

BOOL InitCounter(VOID)
{
    PVRC5074_CONTROL pVrc5074 = (PVRC5074_CONTROL) (KSEG1_BASE | VRC5074_BASE);
    pVrc5074->T1CTRL.Lo = 0x00989680;
    pVrc5074->T1CTRL.Hi = 0x00000001;
    pVrc5074->T2CTRL.Lo = 0xFFFFFFFF;
    pVrc5074->T2CTRL.Hi = 0x00000007;
    pVrc5074->T2CNTR.Lo = 0xFFFFFFFF;
    return TRUE;
}


DWORD GetCounter(VOID)
{
    PVRC5074_CONTROL pVrc5074 = (PVRC5074_CONTROL) (KSEG1_BASE | VRC5074_BASE);
    return ((DWORD)((0xFFFFFFFF - pVrc5074->T2CNTR.Lo)/10));
}