wince格式化nand

在系统启动阶段，可以通过实现OAL的IOCTL_HAL_QUERY_FORMAT_PARTITION 以实现对flash等存储设备的格式化，具体实现方案如下：
1、在ioctl_tab.h 添加 { IOCTL_HAL_QUERY_FORMAT_PARTITION,     0,  OALIoCtlQueryFormatPartition    }, 


2、因为IOCTL_HAL_QUERY_FORMAT_PARTITION 已经在D:\WINCE700\public\COMMON\oak\inc\pkfuncs.h 中被定义，所以只需在在ioctl.c中添加 OALIoCtlQueryFormatPartition 函数的实现代码即可，代码段如下：

DWORD GQueryFormatPartCnt = 0;
/*********************************************************************************************************
** Function name: OALIoCtlQueryFormatPartition
**
** Descriptions: 是否格式化NandFlash的分区
**
**
** input parameters: UINT32 code: IOCTL_HAL_QUERY_FORMAT_PARTITION
** lpInBuf:指向STORAGECONTEXT 结构体
** nInBufSize: sizeof(STORAGECONTEXT)
** nOutBufSize: Size of the BOOL value
** pOutSize:Unused
** output parameters: lpOutBuf:Pointer to a BOOL value. The OAL should return TRUE if the partition is to be formatted. Otherwise it should return FALSE
**
**
** Returned value: TRUE: 初始化成功; FALSE: 初始化失败
*********************************************************************************************************/
BOOL OALIoCtlQueryFormatPartition (
                                   UINT32 code, VOID *lpInBuf , UINT32 nInBufSize, VOID *lpOutBuf,
                                   UINT32 nOutBufSize , UINT32 *pOutSize)
{
#if 1
    STORAGECONTEXT* pContext = (STORAGECONTEXT*)lpInBuf;


    RETAILMSG(1,(_T("INFO: OALIoCtlQueryFormatPartition.\r\n")));

    if (g_pBSPArgs->usRestoreSystem != 2) {
        return FALSE;
    }

    //Flash有两个分区，emmc只有一个分区，在格式完一个分区后就将这个置为RESTORE_SYS_NONE
    GQueryFormatPartCnt++;
    if (GQueryFormatPartCnt >= 1) {                                        /* 目前要格式化的FlashDisk有两个分区*/
        g_pBSPArgs->usRestoreSystem = RESTORE_SYS_NONE;
    }

    /*
    * validate parameters
    */
    if (sizeof(STORAGECONTEXT) != nInBufSize || !lpInBuf ||
        sizeof(BOOL) != nOutBufSize || !lpOutBuf) {
            NKSetLastError(ERROR_INVALID_PARAMETER);
            RETAILMSG(1,(_T("ERROR:OALIoCtlQueryFormatPartition:Invalid Parameter\r\n")));
            return FALSE;
    }

    /*
    * format the root file system? (MountAsRoot=dword:1)
    */
    if (AFS_FLAG_ROOTFS & pContext->dwFlags) {
        RETAILMSG(1,(_T("INFO:OALIoCtlQueryFormatPartition:Format Root File System\r\n")));
        *(BOOL*)lpOutBuf = TRUE;
    }

    /*
    * format the bootable file system? (MountAsBootable=dword:1)
    */
    if (AFS_FLAG_BOOTABLE & pContext->dwFlags) {
        RETAILMSG(1,(_T("INFO:OALIoCtlQueryFormatPartition:Format Bootable File System\r\n")));
        *(BOOL*)lpOutBuf = TRUE;
    }

    return TRUE;
#endif
}

DWORD GQueryFormatPartCnt = 0;
/*********************************************************************************************************
** Function name: OALIoCtlQueryFormatPartition
**
** Descriptions: 是否格式化NandFlash的分区
**
**
** input parameters: UINT32 code: IOCTL_HAL_QUERY_FORMAT_PARTITION
** lpInBuf:指向STORAGECONTEXT 结构体
** nInBufSize: sizeof(STORAGECONTEXT)
** nOutBufSize: Size of the BOOL value
** pOutSize:Unused
** output parameters: lpOutBuf:Pointer to a BOOL value. The OAL should return TRUE if the partition is to be formatted. Otherwise it should return FALSE
**
**
** Returned value: TRUE: 初始化成功; FALSE: 初始化失败
*********************************************************************************************************/
BOOL OALIoCtlQueryFormatPartition (
                                   UINT32 code, VOID *lpInBuf , UINT32 nInBufSize, VOID *lpOutBuf,
                                   UINT32 nOutBufSize , UINT32 *pOutSize)
{
#if 1
    STORAGECONTEXT* pContext = (STORAGECONTEXT*)lpInBuf;


    RETAILMSG(1,(_T("INFO: OALIoCtlQueryFormatPartition.\r\n")));

    if (g_pBSPArgs->usRestoreSystem != 2) {
        return FALSE;
    }

    //Flash有两个分区，emmc只有一个分区，在格式完一个分区后就将这个置为RESTORE_SYS_NONE
    GQueryFormatPartCnt++;
    if (GQueryFormatPartCnt >= 1) {                                        /* 目前要格式化的FlashDisk有两个分区*/
        g_pBSPArgs->usRestoreSystem = RESTORE_SYS_NONE;
    }

    /*
    * validate parameters
    */
    if (sizeof(STORAGECONTEXT) != nInBufSize || !lpInBuf ||
        sizeof(BOOL) != nOutBufSize || !lpOutBuf) {
            NKSetLastError(ERROR_INVALID_PARAMETER);
            RETAILMSG(1,(_T("ERROR:OALIoCtlQueryFormatPartition:Invalid Parameter\r\n")));
            return FALSE;
    }

    /*
    * format the root file system? (MountAsRoot=dword:1)
    */
    if (AFS_FLAG_ROOTFS & pContext->dwFlags) {
        RETAILMSG(1,(_T("INFO:OALIoCtlQueryFormatPartition:Format Root File System\r\n")));
        *(BOOL*)lpOutBuf = TRUE;
    }

    /*
    * format the bootable file system? (MountAsBootable=dword:1)
    */
    if (AFS_FLAG_BOOTABLE & pContext->dwFlags) {
        RETAILMSG(1,(_T("INFO:OALIoCtlQueryFormatPartition:Format Bootable File System\r\n")));
        *(BOOL*)lpOutBuf = TRUE;
    }

    return TRUE;
#endif
}

3、在存储设备的注册表中添加注册表信息，以下是一个示例，checkforformat 添加到相应的存储设备中
[HKEY_LOCAL_MACHINE\System\StorageManager\Profiles\MyStorageProfile\FATFS]
    "CheckForFormat"=dword:1

做完，大功告成。