init.c

来自「该BSP是基于PXA270+WINCE的BSP」· C语言 代码 · 共 214 行

//
// Copyright (c) Microsoft Corporation.  All rights reserved.
//
//
// Use of this source code is subject to the terms of the Microsoft end-user
// license agreement (EULA) under which you licensed this SOFTWARE PRODUCT.
// If you did not accept the terms of the EULA, you are not authorized to use
// this source code. For a copy of the EULA, please see the LICENSE.RTF on your
// install media.
//
//------------------------------------------------------------------------------
//
//  File:  init.c
//
//  Intel Mainstone II board initialization code.
//
#include <bsp.h>
#include <dbgserial.h>

// trace collection support if xdbbrowser is compiled into the image
//
#ifdef USING_XSCALEBROWSER
#include <xdbioctl.h>
#endif

// Global FixUp variables
DWORD dwOEMPlatform = OAL_IOCTL_PLATFORM_WINCE;
 
// External function prototypes.
//
extern TURN_ON_BTB(void);
extern VOID BSPPowerOffInit();

// External global variables.
//
extern DWORD dwNKDrWatsonSize;
extern DWORD CEProcessorType;	// From nkarm.h in the private tree

// Cache-related variables.
//
#define ZBANK_BASE_C_VIRTUAL        0x9A500000
DWORD CacheBufferFlag;  // NOTE: this needn't be a const variable and OEMCacheRangeFlush won't be called before KernelRe locate.
const LPVOID gpvCacheFlushBaseMemoryAddress = (LPVOID)ZBANK_BASE_C_VIRTUAL;

// Common timer routine constants.
//
const DWORD OEMTimerFreq     = OEM_CLOCK_FREQ;
const int OEMMinTickDistance = (OEM_CLOCK_FREQ / 20000);    // 50 us

#if defined(USING_COPROCSUPPORT) || defined(USING_XSCALEBROWSER)
// init function to set up coproc callbacks
extern void OALInitCoProc();
#endif

#ifdef USING_XSCALEBROWSER
// Space allocation for xdbbrowser trace collector (space for 20 captures)
static BYTE xdbTraceBuffer[20][XDBTRACEBUFFERBLOCKSIZE];
#endif

//------------------------------------------------------------------------------
//
//  Function:  OEMInit
//
//  This is Windows CE OAL initialization function. It is called from kernel
//  after basic initialization is made.
//
void OEMInit()
{
//------------------------------------------------
    volatile MAINSTONEII_BLR_REGS *pBLRegs = (volatile MAINSTONEII_BLR_REGS *) OALPAtoVA(MAINSTONEII_BASE_REG_PA_FPGA, FALSE);    
//------------------------------------------------

    OALMSG(OAL_FUNC, (L"+OEMInit\r\n"));

    // Update kernel variables
    if (dwOEMPlatform != OAL_IOCTL_PLATFORM_WINCE) 
    {
        g_oalIoCtlPlatform = dwOEMPlatform;
    }

    // Check clean boot flag in BSP Args area
    //
    {
      // This is the global shared Args flag
      BOOL *bCleanBootFlag = (BOOL*) OALArgsQuery(BSP_ARGS_QUERY_CLEANBOOT);

      if(*bCleanBootFlag)
      {
        OALMSG(1, (TEXT("OEM: Force clean boot.\r\n")));

        // Clear the flag so that we don't get here in the next boot unless it is set again.
        *bCleanBootFlag = FALSE;

        // Tell filesys.exe that we want a clean boot.
        NKForceCleanBoot();

        // Also set the hive and storage clean flags if not already set
        {
          BOOL *bHiveCleanFlag  = (BOOL*) OALArgsQuery(BSP_ARGS_QUERY_HIVECLEAN);
          BOOL *bFormatPartFlag = (BOOL*) OALArgsQuery(BSP_ARGS_QUERY_FORMATPART);

          *bHiveCleanFlag  = TRUE;
          *bFormatPartFlag = TRUE;
        }
      }
    }

    // Expose the MainstoneII processor type.
    //the 'true' processory type is PROCESSOR_ARM920 as Xscale is based on ARM920 core
    //but most of the ISVs expect this value to be PROCESSOR_STRONGARM and their apps fail
    //to install if it is otherwise.
    CEProcessorType = PROCESSOR_STRONGARM;

//-----------------------------------
//OEMInitDebugSerial();
//-----------------------------------

    // Enable the branch-target buffer.
    //
    TURN_ON_BTB();

    // Set memory size for DrWatson kernel support.
    //
    dwNKDrWatsonSize = 128 * 1024;

    // Intialize optional kernel functions.
    //
    pOEMIsProcessorFeaturePresent = OALIsProcessorFeaturePresent;

    // Initialize interrupts.
    //
    if (!OALIntrInit())
    {
        OALMSG(OAL_ERROR, (
            L"ERROR: OEMInit: failed to initialize interrupts.\r\n"
        ));
    }

    // Initialize system clock.
    //
    OALTimerInit(1, OEM_TICKS_1MS, OEM_TICK_COUNT_MARGIN);

    // Initialize the KITL connection if required.
    //
//------------------------------------------------
    OALKitlStart();
//------------------------------------------------

//------------------------------------------------
    // Switch on the audio amplifier.
    //
    pBLRegs->misc_wr2 &= ~(1 << 2);
//------------------------------------------------

    // Initialize suspend/resume function
    BSPPowerOffInit();

#if defined(USING_COPROCSUPPORT) || defined(USING_XSCALEBROWSER)
    // init coproc callbacks
    // 
    OALInitCoProc();
#endif

#ifdef USING_XSCALEBROWSER 
    // Initialize the trace module with trace buffer size
    //
    XSCBwrInitExecutionTrace(xdbTraceBuffer, sizeof(xdbTraceBuffer));
#endif
    
    OALMSG(OAL_FUNC, (L"-OEMInit\r\n"));

#ifdef BSP_POCKETPC
    OALMSG(1, (L"OEMInit - WPC\r\n"));
#endif

#ifdef BSP_SMARTPHONE
    OALMSG(1, (L"OEMInit - SMARTFON\r\n"));
#endif

#ifdef PROJECT_ULDR
    OALMSG(1, (L"OEMInit - ULDR\r\n"));
#endif

}


VOID OALStall(UINT32 microSec)
{
    volatile PBULVERDE_OST_REG pOSTRegs = NULL;

    pOSTRegs = (PBULVERDE_OST_REG)OALPAtoVA(BULVERDE_BASE_REG_PA_OST, FALSE);

    XllpOstDelayMicroSeconds(pOSTRegs, microSec);
}


VOID OEMInitDebugSerial(void)
{
    UINT32 *pDbgSerPhysAddr;

    // Check and initialize the BSP Args area
    //
    OALArgsInit((BSP_ARGS *) IMAGE_SHARE_ARGS_UA_START);

    pDbgSerPhysAddr = (UINT32*) OALArgsQuery(BSP_ARGS_QUERY_DBGSERIAL);
    if (pDbgSerPhysAddr)
    {
        InitDebugSerial(*pDbgSerPhysAddr, FALSE);
    }
}

//------------------------------------------------------------------------------