如何制作支持VMWare的Windows CE BSP

不知道有没有人试过在VMWare中跑过Windows CE。可能有人会问：在VMWare中跑Windows CE有什么意义？Windows CE不是有基于Vritual PC的emulator吗？要做干吗不做一个基于Microsoft自己的Virtual PC的？

简单的答案是，VMWare支持一些Virtual PC（包括Windows CE emulator）不支持的硬件。对我来说，最吸引我的是VMWare支持USB设备。另外根据我的经验VMWare的性能比Virtual PC强。

本文介绍如何针对VMWare支持的硬件，做一个相应的Windows CE BSP。根据VMWare虚拟机的spec，我打算支持的硬件列表如下（SCSI设备、软驱这些用的比较少就算了）：

Graphics

•VGAandSVGAsupport

IDEDrives

•IDEvirtualdisksupto 950 GB

•Serial ( COM ) Ports

•Uptofourserial ( COM ) ports

USBports

•Two-portUSB 1.1 UHCIcontroller

Keyboard

• 104 -keyWindows 95 / 98 enhanced

MouseandDrawingTablets

•PS / 2 mouse

EthernetCard

•AMDPCnet-PCIIIcompatible

Sound

•EmulatesCreativeLabsSoundBlasterAudioPCI ( MIDIinput , gamecontrollersandjoysticksare not supported , except for USBdevices )

其实从根本上来说，给VMWare用的Windows CE跟普通PC或者Virtual PC的并无多大区别。因此基本做法和一些概念都可以看MSDN里对CEPC的相关介绍。这里只重点介绍一些针对VMWare的不同地方。

给Windows CE用的VMWare虚拟机可以用DOS的。BSP可以直接copy一份Platform Builder带的CEPC BSP做为起始的BSP，然后在此基础上修改。从IDE硬盘、声卡、显卡、键盘鼠标的支持比较简单，用Platform Builder中现成的driver就行了。

比较麻烦的是网卡和USB host controller。

VMWare虚拟的网卡兼容AMD PCnet-PCI II，具体型号是AMD AM79C970A，这个在Windows CE下可实在不好找，自己写一个就太麻烦了。不过在google大法的强力帮助下，我花了很长时间终于找到一个编译好的driver－还是for Windows CE 2.0的（现在想不起来在哪儿找到的了，想要的直接找我吧）。相关注册表设置见附录。

比较头疼的是USB host driver。VMWare中支持的USB host controller是USB 1.1 UHCI controller。Windows CE下有现成的driver，但是直接拿来用的话你会发现不能工作。一番研究后发现问题出在LEGACY SUPPORT REGISTER （LEGSUP）的设置上－VMWare在初始化UHCI controller的时候enable了SMI generation，而且没有把USB中断route到PIRQD上。简单说来就是VMWare对UHCI controller的初始化和Windows CE自带driver要求的不一样（其实是和UHCI spec定义的不一致，UHCI spec定义LEGSUP寄存器默认值是2000h（见5.2.1节），VMWare中是3Bh）。为了能让UHCI controller工作，需要修改UHCI driver的初始化例程，重新编译一个版本。具体修改见附录。

这样，一个支持声卡、网卡、USB设备的VMWare BSP就基本搞定了。

附上两张运行时的截图：

附1，网卡的注册表设置，放在platform.reg里：

[HKEY_LOCAL_MACHINE Comm PCNTN4M]
" DisplayName " = " PCNTN4MCompatibleEthernetDriver "
" Group " = " NDIS "
" ImagePath " = " pcntn4m.dll "

[HKEY_LOCAL_MACHINE Comm PCNTN4M Linkage]
" Route " = multi_sz: " PCNTN4M1 "

[HKEY_LOCAL_MACHINE Comm PCNTN4M1]
" DisplayName " = " PCNTN4MCompatibleEthernetDriver "
" Group " = " NDIS "
" ImagePath " = " pcntn4m.dll "


[HKEY_LOCAL_MACHINE Comm PCNTN4M1 Parms]
; " BusNumber " = dword: 0
; " BusType " = dword: 05
; " Interrupt " = dword: 05
; " IOAddress " = dword: 0300


[HKEY_LOCAL_MACHINE Comm Tcpip Linkage]
" Bind " = multi_sz: " ppp " , " PCNTN4M1 "

; Registryvalues for thepcntn4m1driver
[HKEY_LOCAL_MACHINE Comm PCNTN4M1 Parms TcpIp]
; ThisenabletheDHCP . InWinCE 2.1 PreviewversionstaticallyallocatedIPaddress
; does not work . Sowe use theDHCPservertoallocatetheIPaddress .
" EnableDHCP " = dword: 1
; ThisshouldbeMULTI_SZ
" DefaultGateway " = ""
; ThisshouldbeSZ ... If nullitmeans use LAN , else WANandInterface .
" LLInterface " = ""
; Use zero for broadcastaddress? ( or 255.255 . 255.255 )
" UseZeroBroadcast " = dword: 0
; ThusshouldbeMULTI_SZ , theIPaddresslist
" IpAddress " = " 0.0.0.0 "
; ThisshouldbeMULTI_SZ , thesubnetmasks for theaboveIPaddresses
" Subnetmask " = " 0.0.0.0 "

;
; TemplatethePCIbusdriverusestomatchaAM79C970PC- net card
;
[HKEY_LOCAL_MACHINE Drivers BuiltIn PCI Template PCNTN4M]
" Dll " = " NDIS.dll "
" Class " = dword: 02
" SubClass " = dword: 00
" ProgIF " = dword: 0
" VendorID " = multi_sz: " 1022 "
" DeviceID " = multi_sz: " 2000 "
; " Entry " = " NdisPCIBusDeviceInit "
" Prefix " = " NDS "
" Transceiver " = dword: 3
" IsrDll " = " giisr.dll "
" IsrHandler " = " ISRHandler "
" PortIsIO " = dword: 1
" PortOffset " = dword :C ; TBD
" PortSize " = dword: 2
" PortMask " = dword:5F00 ; TBD

[HKEY_LOCAL_MACHINE Comm ConnectionSharing]
" PrivateInterface " = " PCI\PCNTN4M "

附2，UHCI driver需要修改的代码（红色部分，在$(DRIVERS)\USB\HCD\UHC\system.csystem.c中）：

//Inlinefunctions
__inlinestaticWORD
PCIConfig_ReadWord(
ULONGBusNumber,
ULONGDevice,
ULONGFunction,
ULONGOffset
)
...{
WORDRetVal=0;
PCI_SLOT_NUMBERSlotNumber;

SlotNumber.u.AsULONG=0;
SlotNumber.u.bits.DeviceNumber=Device;
SlotNumber.u.bits.FunctionNumber=Function;
HalGetBusDataByOffset(PCIConfiguration,BusNumber,SlotNumber.u.AsULONG,&RetVal,Offset,sizeof(RetVal));

returnRetVal;
}

__inlinestaticvoid
PCIConfig_Write(
ULONGBusNumber,
ULONGDevice,
ULONGFunction,
ULONGOffset,
ULONGValue,
ULONGSize
)
...{
PCI_SLOT_NUMBERSlotNumber;

SlotNumber.u.AsULONG=0;
SlotNumber.u.bits.DeviceNumber=Device;
SlotNumber.u.bits.FunctionNumber=Function;

HalSetBusDataByOffset(PCIConfiguration,BusNumber,SlotNumber.u.AsULONG,&Value,Offset,Size);
}

/**//*InitializeUHCI
*
*ConfigureandinitializeUHCIcard
*
*ReturnValue:
*ReturnTRUEifcardcouldbelocatedandconfigured,otherwiseFALSE
*/
staticBOOL
InitializeUHCI(
SUhcdPdd*pPddObject,//IN-PointertoPDDstructure
LPCWSTRszDriverRegKey)//IN-Pointertoactiveregistrykeystring
...{
PUCHARioPortBase=NULL;
DWORDdwAddrLen;
DWORDdwIOSpace;
BOOLInstallIsr=FALSE;
BOOLfResult=FALSE;
LPVOIDpobMem=NULL;
LPVOIDpobUhcd=NULL;
DWORDPhysAddr;
DWORDdwHPPhysicalMemSize;
HKEYhKey;
WORDLegSup;

DDKWINDOWINFOdwi;
DDKISRINFOdii;
DDKPCIINFOdpi;
if(RegOpenKeyEx(HKEY_LOCAL_MACHINE,szDriverRegKey,0,0,&hKey)!=ERROR_SUCCESS)...{
DEBUGMSG(ZONE_ERROR,(TEXT("InitializeUHCI:GetRegistryConfigRegOpenKeyEx(%s)failed "),
szDriverRegKey));
returnFALSE;
}
dwi.cbSize=sizeof(dwi);
dii.cbSize=sizeof(dii);
dpi.cbSize=sizeof(dpi);
if(DDKReg_GetWindowInfo(hKey,&dwi)!=ERROR_SUCCESS||
DDKReg_GetIsrInfo(hKey,&dii)!=ERROR_SUCCESS||
DDKReg_GetPciInfo(hKey,&dpi)!=ERROR_SUCCESS)...{
DEBUGMSG(ZONE_ERROR,(TEXT("InitializeUHCI:DDKReg_GetWindowInfoorDDKReg_GetWindowInfoorDDKReg_GetPciInfofailed ")));
gotoInitializeUHCI_Error;
}
if(dwi.dwNumMemWindows!=0)...{
PhysAddr=dwi.memWindows[0].dwBase;
dwAddrLen=dwi.memWindows[0].dwLen;
dwIOSpace=0;
}
elseif(dwi.dwNumIoWindows!=0)...{
PhysAddr=dwi.ioWindows[0].dwBase;
dwAddrLen=dwi.ioWindows[0].dwLen;
dwIOSpace=1;
}
else
gotoInitializeUHCI_Error;
DEBUGMSG(ZONE_INIT,(TEXT("UHCD:Readconfigfromregistry:BaseAddress:0x%X,Length:0x%X,I/OPort:%s,SysIntr:0x%X,InterfaceType:%u,BusNumber:%u "),
PhysAddr,dwAddrLen,dwIOSpace?L"YES":L"NO",dii.dwSysintr,dwi.dwInterfaceType,dwi.dwBusNumber));

ioPortBase=(PUCHAR)PhysAddr;
if(!(fResult=ConfigureUHCICard(pPddObject,&ioPortBase,dwAddrLen,dwIOSpace,dwi.dwInterfaceType,dwi.dwBusNumber)))...{
gotoInitializeUHCI_Error;
}
if(dii.szIsrDll[0]!=0&&dii.szIsrHandler[0]!=0&&dii.dwIrq<0xff&&dii.dwIrq>0)...{
//InstallISRhandler
pPddObject->IsrHandle=LoadIntChainHandler(dii.szIsrDll,dii.szIsrHandler,(BYTE)dii.dwIrq);

if(!pPddObject->IsrHandle)...{
DEBUGMSG(ZONE_ERROR,(L"UHCD:Couldn'tinstallISRhandler "));
}else...{
GIISR_INFOInfo;
PHYSICAL_ADDRESSPortAddress=...{PhysAddr,0};
DEBUGMSG(ZONE_INIT,(L"UHCD:InstalledISRhandler,Dll='%s',Handler='%s',Irq=%d ",
dii.szIsrDll,dii.szIsrHandler,dii.dwIrq));
if(!BusTransBusAddrToStatic(pPddObject->hParentBusHandle,dwi.dwInterfaceType,dwi.dwBusNumber,PortAddress,dwAddrLen,&dwIOSpace,&(PVOID)PhysAddr))...{
DEBUGMSG(ZONE_ERROR,(L"UHCD:FailedTransBusAddrToStatic "));
returnFALSE;
}
//SetupISRhandler
Info.SysIntr=dii.dwSysintr;
Info.CheckPort=TRUE;
Info.PortIsIO=(dwIOSpace)?TRUE:FALSE;
Info.UseMaskReg=TRUE;;
Info.PortAddr=PhysAddr+0x2;
Info.PortSize=sizeof(WORD);
Info.MaskAddr=PhysAddr+0x4;
if(!KernelLibIoControl(pPddObject->IsrHandle,IOCTL_GIISR_INFO,&Info,sizeof(Info),NULL,0,NULL))...{
DEBUGMSG(ZONE_ERROR,(L"UHCD:KernelLibIoControlcallfailed. "));
}
}
}
//ThePDDcansupplyabufferofcontiguousphysicalmemoryhere,orcanletthe
//MDDtrytoallocatethememoryfromsystemRAM.WewillusetheHalAllocateCommonBuffer()
//APItoallocatethememoryandbuscontrollerphysicaladdressesandpassthisinformation
//intotheMDD.
if(GetRegistryPhysicalMemSize(szDriverRegKey,&pPddObject->dwPhysicalMemSize))...{
//AquarterforHighpriorityMemory.
dwHPPhysicalMemSize=pPddObject->dwPhysicalMemSize/4;
//Alignwithpagesize.
pPddObject->dwPhysicalMemSize=(pPddObject->dwPhysicalMemSize+PAGE_SIZE-1)&~(PAGE_SIZE-1);
dwHPPhysicalMemSize=((dwHPPhysicalMemSize+PAGE_SIZE-1)color: rgb(0

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Process Explorer for WinCE：揭示Windows ... | C++临时变量的另类应用：基于iostream的类 ...

• 2006-11-19 22:01
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