pm.c

AT91RM9200-U-Boot at91rm9200u-boot移植源代码

    return 0;
}

char * PMAPI PM_getCurrentPath(
    char *path,
    int maxLen)
{
    return getcwd(path,maxLen);
}

char PMAPI PM_getBootDrive(void)
{ return 'C'; }

const char * PMAPI PM_getVBEAFPath(void)
{ return "c:\\"; }

const char * PMAPI PM_getNucleusPath(void)
{
    static char path[256];
    char        *env;

    if ((env = getenv("NUCLEUS_PATH")) != NULL)
        return env;
    if ((env = getenv("WINBOOTDIR")) != NULL) {
        /* Running in a Windows 9x DOS box or DOS mode */
        strcpy(path,env);
        strcat(path,"\\system\\nucleus");
        return path;
        }
    if ((env = getenv("SystemRoot")) != NULL) {
        /* Running in an NT/2K DOS box */
        strcpy(path,env);
        strcat(path,"\\system32\\nucleus");
        return path;
        }
    return "c:\\nucleus";
}

const char * PMAPI PM_getNucleusConfigPath(void)
{
    static char path[256];
    strcpy(path,PM_getNucleusPath());
    PM_backslash(path);
    strcat(path,"config");
    return path;
}

const char * PMAPI PM_getUniqueID(void)
{ return "DOS"; }

const char * PMAPI PM_getMachineName(void)
{ return "DOS"; }

int PMAPI PM_kbhit(void)
{
    return kbhit();
}

int PMAPI PM_getch(void)
{
    return getch();
}

PM_HWND PMAPI PM_openConsole(PM_HWND hwndUser,int device,int xRes,int yRes,int bpp,ibool fullScreen)
{
    /* Not used for DOS */
    (void)hwndUser;
    (void)device;
    (void)xRes;
    (void)yRes;
    (void)bpp;
    (void)fullScreen;
    return 0;
}

int PMAPI PM_getConsoleStateSize(void)
{
    return sizeof(DOS_stateBuf);
}

void PMAPI PM_saveConsoleState(void *stateBuf,PM_HWND hwndConsole)
{
    RMREGS          regs;
    DOS_stateBuf    *sb = stateBuf;

    /* Save the old video mode state */
    regs.h.ah = 0x0F;
    PM_int86(0x10,&regs,&regs);
    sb->oldMode = regs.h.al & 0x7F;
    sb->old50Lines = false;
    if (sb->oldMode == 0x3) {
        regs.x.ax = 0x1130;
        regs.x.bx = 0;
        regs.x.dx = 0;
        PM_int86(0x10,&regs,&regs);
        sb->old50Lines = (regs.h.dl == 42 || regs.h.dl == 49);
        }
    (void)hwndConsole;
}

void PMAPI PM_setSuspendAppCallback(int (_ASMAPIP saveState)(int flags))
{
    /* Not used for DOS */
    (void)saveState;
}

void PMAPI PM_restoreConsoleState(const void *stateBuf,PM_HWND hwndConsole)
{
    RMREGS              regs;
    const DOS_stateBuf  *sb = stateBuf;

    /* Retore 50 line mode if set */
    if (sb->old50Lines) {
        regs.x.ax = 0x1112;
        regs.x.bx = 0;
        PM_int86(0x10,&regs,&regs);
        }
    (void)hwndConsole;
}

void PMAPI PM_closeConsole(PM_HWND hwndConsole)
{
    /* Not used for DOS */
    (void)hwndConsole;
}

void PMAPI PM_setOSCursorLocation(int x,int y)
{
    uchar *_biosPtr = PM_getBIOSPointer();
    PM_setByte(_biosPtr+0x50,x);
    PM_setByte(_biosPtr+0x51,y);
}

void PMAPI PM_setOSScreenWidth(int width,int height)
{
    uchar *_biosPtr = PM_getBIOSPointer();
    PM_setWord(_biosPtr+0x4A,width);
    PM_setWord(_biosPtr+0x4C,width*2);
    PM_setByte(_biosPtr+0x84,height-1);
    if (height > 25) {
        PM_setWord(_biosPtr+0x60,0x0607);
        PM_setByte(_biosPtr+0x85,0x08);
        }
    else {
        PM_setWord(_biosPtr+0x60,0x0D0E);
        PM_setByte(_biosPtr+0x85,0x016);
        }
}

void * PMAPI PM_mallocShared(long size)
{
    return PM_malloc(size);
}

void PMAPI PM_freeShared(void *ptr)
{
    PM_free(ptr);
}

#define GetRMVect(intno,isr)    *(isr) = ((ulong*)rmZeroPtr)[intno]
#define SetRMVect(intno,isr)    ((ulong*)rmZeroPtr)[intno] = (isr)

ibool PMAPI PM_doBIOSPOST(
    ushort axVal,
    ulong BIOSPhysAddr,
    void *mappedBIOS,
    ulong BIOSLen)
{
    static int      firstTime = true;
    static uchar    *rmZeroPtr;
    long            Current10,Current6D,Current42;
    RMREGS          regs;
    RMSREGS         sregs;

    /* Create a zero memory mapping for us to use */
    if (firstTime) {
        rmZeroPtr = PM_mapPhysicalAddr(0,0x7FFF,true);
        firstTime = false;
        }

    /* Remap the secondary BIOS to 0xC0000 physical */
    if (BIOSPhysAddr != 0xC0000L || BIOSLen > 32768) {
        /* DOS cannot virtually remap the BIOS, so we can only work if all
         * the secondary controllers are identical, and we then use the
         * BIOS on the first controller for all the remaining controllers.
         *
         * For OS'es that do virtual memory, and remapping of 0xC0000
         * physical (perhaps a copy on write mapping) should be all that
         * is needed.
         */
        return false;
        }

    /* Save current handlers of int 10h and 6Dh */
    GetRMVect(0x10,&Current10);
    GetRMVect(0x6D,&Current6D);

    /* POST the secondary BIOS */
    GetRMVect(0x42,&Current42);
    SetRMVect(0x10,Current42);  /* Restore int 10h to STD-BIOS */
    regs.x.ax = axVal;
    PM_callRealMode(0xC000,0x0003,&regs,&sregs);

    /* Restore current handlers */
    SetRMVect(0x10,Current10);
    SetRMVect(0x6D,Current6D);

    /* Second the primary BIOS mappin 1:1 for 0xC0000 physical */
    if (BIOSPhysAddr != 0xC0000L) {
        /* DOS does not support this */
        (void)mappedBIOS;
        }
    return true;
}

void PMAPI PM_sleep(ulong milliseconds)
{
    ulong           microseconds = milliseconds * 1000L;
    LZTimerObject   tm;

    LZTimerOnExt(&tm);
    while (LZTimerLapExt(&tm) < microseconds)
        ;
    LZTimerOffExt(&tm);
}

int PMAPI PM_getCOMPort(int port)
{
    switch (port) {
        case 0: return 0x3F8;
        case 1: return 0x2F8;
        }
    return 0;
}

int PMAPI PM_getLPTPort(int port)
{
    switch (port) {
        case 0: return 0x3BC;
        case 1: return 0x378;
        case 2: return 0x278;
        }
    return 0;
}

PM_MODULE PMAPI PM_loadLibrary(
    const char *szDLLName)
{
    (void)szDLLName;
    return NULL;
}

void * PMAPI PM_getProcAddress(
    PM_MODULE hModule,
    const char *szProcName)
{
    (void)hModule;
    (void)szProcName;
    return NULL;
}

void PMAPI PM_freeLibrary(
    PM_MODULE hModule)
{
    (void)hModule;
}

int PMAPI PM_setIOPL(
    int level)
{
    return level;
}

/****************************************************************************
REMARKS:
Internal function to convert the find data to the generic interface.
****************************************************************************/
static void convertFindData(
    PM_findData *findData,
    struct find_t *blk)
{
    ulong   dwSize = findData->dwSize;

    memset(findData,0,findData->dwSize);
    findData->dwSize = dwSize;
    if (blk->attrib & _A_RDONLY)
        findData->attrib |= PM_FILE_READONLY;
    if (blk->attrib & _A_SUBDIR)
        findData->attrib |= PM_FILE_DIRECTORY;
    if (blk->attrib & _A_ARCH)
        findData->attrib |= PM_FILE_ARCHIVE;
    if (blk->attrib & _A_HIDDEN)
        findData->attrib |= PM_FILE_HIDDEN;
    if (blk->attrib & _A_SYSTEM)
        findData->attrib |= PM_FILE_SYSTEM;
    findData->sizeLo = blk->size;
    strncpy(findData->name,blk->name,PM_MAX_PATH);
    findData->name[PM_MAX_PATH-1] = 0;
}

#define FIND_MASK   (_A_RDONLY | _A_ARCH | _A_SUBDIR | _A_HIDDEN | _A_SYSTEM)

/****************************************************************************
REMARKS:
Function to find the first file matching a search criteria in a directory.
****************************************************************************/
void * PMAPI PM_findFirstFile(
    const char *filename,
    PM_findData *findData)
{
    struct find_t *blk;

    if ((blk = PM_malloc(sizeof(*blk))) == NULL)
        return PM_FILE_INVALID;
    if (_dos_findfirst((char*)filename,FIND_MASK,blk) == 0) {
        convertFindData(findData,blk);
        return blk;
        }
    return PM_FILE_INVALID;
}

/****************************************************************************
REMARKS:
Function to find the next file matching a search criteria in a directory.
****************************************************************************/
ibool PMAPI PM_findNextFile(
    void *handle,
    PM_findData *findData)
{
    struct find_t *blk = handle;

    if (_dos_findnext(blk) == 0) {
        convertFindData(findData,blk);
        return true;
        }
    return false;
}

/****************************************************************************
REMARKS:
Function to close the find process
****************************************************************************/
void PMAPI PM_findClose(
    void *handle)
{
    PM_free(handle);
}

/****************************************************************************
REMARKS:
Function to determine if a drive is a valid drive or not. Under Unix this
function will return false for anything except a value of 3 (considered
the root drive, and equivalent to C: for non-Unix systems). The drive
numbering is:

    1   - Drive A:
    2   - Drive B:
    3   - Drive C:
    etc

****************************************************************************/
ibool PMAPI PM_driveValid(
    char drive)
{
    RMREGS  regs;
    regs.h.dl = (uchar)(drive - 'A' + 1);
    regs.h.ah = 0x36;               // Get disk information service
    PM_int86(0x21,&regs,&regs);
    return regs.x.ax != 0xFFFF;     // AX = 0xFFFF if disk is invalid
}

/****************************************************************************
REMARKS:
Function to get the current working directory for the specififed drive.
Under Unix this will always return the current working directory regardless
of what the value of 'drive' is.
****************************************************************************/
void PMAPI PM_getdcwd(
    int drive,
    char *dir,
    int len)
{
    uint oldDrive,maxDrives;
    _dos_getdrive(&oldDrive);
    _dos_setdrive(drive,&maxDrives);
    getcwd(dir,len);
    _dos_setdrive(oldDrive,&maxDrives);
}

/****************************************************************************
REMARKS:
Function to change the file attributes for a specific file.
****************************************************************************/
void PMAPI PM_setFileAttr(
    const char *filename,
    uint attrib)
{
#if defined(TNT) && defined(_MSC_VER)
    DWORD attr = 0;

    if (attrib & PM_FILE_READONLY)
        attr |= FILE_ATTRIBUTE_READONLY;
    if (attrib & PM_FILE_ARCHIVE)
        attr |= FILE_ATTRIBUTE_ARCHIVE;
    if (attrib & PM_FILE_HIDDEN)
        attr |= FILE_ATTRIBUTE_HIDDEN;
    if (attrib & PM_FILE_SYSTEM)
        attr |= FILE_ATTRIBUTE_SYSTEM;
    SetFileAttributes((LPSTR)filename, attr);
#else
    uint attr = 0;

    if (attrib & PM_FILE_READONLY)
        attr |= _A_RDONLY;
    if (attrib & PM_FILE_ARCHIVE)
        attr |= _A_ARCH;
    if (attrib & PM_FILE_HIDDEN)
        attr |= _A_HIDDEN;
    if (attrib & PM_FILE_SYSTEM)
        attr |= _A_SYSTEM;
    _dos_setfileattr(filename,attr);
#endif
}

/****************************************************************************
REMARKS:
Function to create a directory.
****************************************************************************/
ibool PMAPI PM_mkdir(
    const char *filename)
{
#ifdef  __GNUC__
    return mkdir(filename,S_IRUSR) == 0;
#else
    return mkdir(filename) == 0;
#endif
}

/****************************************************************************
REMARKS:
Function to remove a directory.
****************************************************************************/
ibool PMAPI PM_rmdir(
    const char *filename)
{
    return rmdir(filename) == 0;
}

/*-------------------------------------------------------------------------*/