Thanks Feng, Will try that out.
Regards
Vijai Kumar K
On Fri, Jun 13, 2014 at 1:32 PM, <edk2-devel-requ...@lists.sourceforge.net>
wrote:
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> Today's Topics:
>
> 1. Re: NOR Flash Driver (Andrew Fish) (Tian, Feng)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 13 Jun 2014 08:02:36 +0000
> From: "Tian, Feng" <feng.t...@intel.com>
> Subject: Re: [edk2] NOR Flash Driver (Andrew Fish)
> To: "edk2-devel@lists.sourceforge.net"
> <edk2-devel@lists.sourceforge.net>
> Message-ID:
> <
> 7f1bad85adea444d97065a60d2e97ee501c0a...@shsmsx101.ccr.corp.intel.com>
>
> Content-Type: text/plain; charset="utf-8"
>
> You can use Dblk shell cmd to test read, and you could refer to dblk
> source code to add write test.
>
> From: vijaikumar k [mailto:vijaikuma...@mistralsolutions.com]
> Sent: Friday, June 13, 2014 14:30
> To: edk2-devel@lists.sourceforge.net
> Subject: Re: [edk2] NOR Flash Driver (Andrew Fish)
>
> Thanks Deric and Andrew for helping me out on this.
>
> Yes, I have assigned Instance->Handle to Null in
> mNorFlashInstanceTemplate. After assigning
> Instance->Handle=ControllerHandle and removing &gEfiDevicePathProtocolGuid,
> Instance->DevPath everything went fine and now I am able to see my device
> as BLK7 when I do map -r. Here is the code of mNorFlashInstanceTemplate.
> How can I test my driver implementation NorFlashBlockIoReadBlocks,
> NorFlashBlockIoWriteBlocks etc.. ?? Is there a way to test it from UEFI
> shell??
>
> NOR_FLASH_INSTANCE mNorFlashInstanceTemplate = {
> NOR_FLASH_SIGNATURE, // Signature
> NULL, // Handle
> FALSE, // Initialized
> NULL, // Initialize
> 0, // Size
> 0, // StartLba
> {
> EFI_BLOCK_IO_PROTOCOL_REVISION3, // Revision
> NULL, // Media
> (EFI_BLOCK_RESET)NorFlashBlockIoReset, // Reset
> NorFlashBlockIoReadBlocks, // ReadBlocks
> NorFlashBlockIoWriteBlocks, // WriteBlocks
> NorFlashBlockIoFlushBlocks // FlushBlocks
> },// BlockIoProtocol
> {
> 0, // MediaId
> FALSE, // RemovableMedia
> FALSE, // MediaPresent
> TRUE, // LogicalPartition
> FALSE, // ReadOnly
> FALSE, // WriteCaching
> 512, // BlockSize
> 0, // IoAlign
> 0, // LastBlock
> 0, // LowestAlignedLba
> 0, // LogicalBlocksPerPhysicalBlock
> 0 // OptimalTransferLengthGranularity
> }, //Media;
> NULL, //For PCI Access
> NULL, //Device Path
> };
>
> Regards
> Vijai Kumar K
>
> On Thu, Jun 12, 2014 at 11:39 PM, <
> edk2-devel-requ...@lists.sourceforge.net<mailto:
> edk2-devel-requ...@lists.sourceforge.net>> wrote:
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>
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> or, via email, send a message with subject or body 'help' to
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> edk2-devel-requ...@lists.sourceforge.net>
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> When replying, please edit your Subject line so it is more specific
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>
>
> Today's Topics:
>
> 1. Re: NOR Flash Driver (Andrew Fish)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Thu, 12 Jun 2014 11:09:30 -0700
> From: Andrew Fish <af...@apple.com<mailto:af...@apple.com>>
> Subject: Re: [edk2] NOR Flash Driver
> To: edk2-devel@lists.sourceforge.net<mailto:
> edk2-devel@lists.sourceforge.net>
> Message-ID: <2cc53dd9-1496-43e8-ae0e-4bc3ce432...@apple.com<mailto:
> 2cc53dd9-1496-43e8-ae0e-4bc3ce432...@apple.com>>
> Content-Type: text/plain; charset="windows-1252"
>
>
> On Jun 12, 2014, at 11:01 AM, Deric Cole <deric_c...@phoenix.com<mailto:
> deric_c...@phoenix.com>> wrote:
>
> > Vijai,
> >
> > You didn?t send the definition of mNorFlashInstanceTemplate, so I can
> only assume you?ve correctly initialized the other fields of your block I/O
> protocol there. You may want to double check.
> >
> > I see this comment:
> >
> > //Removed Device path as already there is a device path associated with
> PCIIO: by Andrew Fish
> > Status = gBS->InstallMultipleProtocolInterfaces (
> > &Instance->Handle,
> > &gEfiBlockIoProtocolGuid,
> &Instance->BlockIoProtocol,
> > &gEfiDevicePathProtocolGuid,
> Instance->DevPath,
> > NULL
> > );
> >
> > But the device path does not appear to be removed.
> >
> > Anyway, you should use ControllerHandle here. It looks like
> Instance->Handle is probably null, which will allocate a new handle, rather
> than installing on the existing handle (the one you found PCI I/O on). Try
> adding this line above:
> >
> > Instance->Handle = ControllerHandle;
> >
>
> You also need to remove:
> > &gEfiDevicePathProtocolGuid, Instance->DevPath,
>
> as this will cause the InstallMultipleProtocolnterface() to fail. You can
> only have a single protocol instance of a protocol on a handle.
>
> If you create a new handle, then your driver is a bus driver and you need
> to do the open by child controller.
>
> Thanks,
>
> Andrew Fish
>
> > Also note that if there is no file system, you will not see fs0/fs1/etc.
> for this device after you do ?map -r?. But if your block I/O protocol is
> installed correctly, you will see blk0/blk1/etc. for it.
> >
> > Deric Cole
> > Sr. Customer Engineer
> > Phoenix Technologies Ltd.
> >
> > From: vijaikumar k [mailto:vijaikuma...@mistralsolutions.com<mailto:
> vijaikuma...@mistralsolutions.com>]
> > Sent: Thursday, June 12, 2014 3:43 AM
> > To: edk2-devel@lists.sourceforge.net<mailto:
> edk2-devel@lists.sourceforge.net>
> > Subject: [edk2] NOR Flash Driver
> >
> > Hi All,
> > I am a newbie to EFI. I have the following problem
> > Problem: We have Atom Processor connected to a PCIe to PCI bridge. On
> the other side of the PCI bridge we have a PCI device which gives Memory
> Mapped access to NOR Flash via BAR0. I have written a driver to boot from
> the NOR flash. The driver is registered successfully but I am not able to
> see my device when I do "Map -r".
> > By the way the NOR has no File System associated with it. It is still
> RAW. Following are the line of code written by me for start routine.
> >
> > Code:
> > EFI_STATUS
> > EFIAPI
> > NorFlashDriverBindingStart (
> > IN EFI_DRIVER_BINDING_PROTOCOL *This,
> > IN EFI_HANDLE ControllerHandle,
> > IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
> > )
> > {
> > EFI_STATUS Status;
> > EFI_PCI_IO_PROTOCOL *PciIo;
> > EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;
> > NOR_FLASH_INSTANCE *Instance;
> > UINT8 CmdSts;
> > Instance=NULL;
> > Print(L"\nInside Start of NorFlash");
> > Status = gBS->OpenProtocol(
> > ControllerHandle,
> > &gEfiPciIoProtocolGuid,
> > (VOID **)&PciIo,
> > This->DriverBindingHandle,
> > ControllerHandle,
> > EFI_OPEN_PROTOCOL_BY_DRIVER
> > );
> > if (EFI_ERROR (Status)) {
> > goto Error;
> > }
> > Print(L"\nPCI IO Protocol opened successfully");
> >
> > Status = gBS->OpenProtocol (
> > ControllerHandle,
> > &gEfiDevicePathProtocolGuid,
> > (VOID **) &ParentDevicePath,
> > This->DriverBindingHandle,
> > ControllerHandle,
> > EFI_OPEN_PROTOCOL_BY_DRIVER
> > );
> > if (EFI_ERROR (Status)) {
> > Print(L"\nDevice Path Protocol Failed to register");
> > goto Error;
> > }
> > Print(L"\nDevice Path Protocol Registered Successfully");
> > Instance = AllocateCopyPool
> (sizeof(NOR_FLASH_INSTANCE),&mNorFlashInstanceTemplate);
> > if (Instance == NULL) {
> > return EFI_OUT_OF_RESOURCES;
> > }
> > Print(L"\nResource Pool has been allocated");
> >
> > Instance->Signature=NOR_FLASH_SIGNATURE;
> > Instance->Size = NOR_SIZE;
> > Instance->PciIo=PciIo;
> >
> > Instance->BlockIoProtocol.Media = &Instance->Media;
> > Instance->Media.MediaId = NOR_MEDIA_ID;
> > Instance->Media.BlockSize = NOR_BLOCK_SIZE;
> > Instance->Media.LastBlock = (NOR_SIZE / NOR_BLOCK_SIZE)-1;
> >
> > Instance->Initialized = TRUE;
> > Print(L"\nBefore Installing multiple protocols");
> > //Set Command register to enable Bus Master and MemorySpace
> > PciIo->Pci.Read (
> > PciIo,
> > EfiPciIoWidthUint8,
> > PCI_COMMAND_OFFSET,
> > sizeof (UINT8),
> > &CmdSts
> > );
> >
> > CmdSts |= EFI_PCI_COMMAND_MEMORY_SPACE |
> > EFI_PCI_COMMAND_BUS_MASTER;
> >
> > PciIo->Pci.Write(
> > PciIo,
> > EfiPciIoWidthUint8,
> > PCI_COMMAND_OFFSET,
> > sizeof (UINT8),
> > &CmdSts
> > );
> > //Removed Device path as already there is a device path associated with
> PCIIO: by Andrew Fish
> > Status = gBS->InstallMultipleProtocolInterfaces (
> > &Instance->Handle,
> > &gEfiBlockIoProtocolGuid,
> &Instance->BlockIoProtocol,
> >
> &gEfiDevicePathProtocolGuid, Instance->DevPath,
> > NULL
> > );
> >
> > if (EFI_ERROR(Status)) {
> > Print(L"\nFailedInstalling multiple protocols");
> > FreePool(Instance);
> > return Status;
> > }
> > Print(L"\nAfter Installing multiple protocols");
> > return Status;
> >
> > Error:
> >
> > gBS->CloseProtocol (
> > ControllerHandle,
> > &gEfiDevicePathProtocolGuid,
> > This->DriverBindingHandle,
> > ControllerHandle
> > );
> > gBS->CloseProtocol (
> > ControllerHandle,
> > &gEfiPciIoProtocolGuid,
> > This->DriverBindingHandle,
> > ControllerHandle
> > );
> > if (Instance->DevPath != NULL) {
> > FreePool (Instance->DevPath);
> > }
> > FreePool (Instance);
> > return Status;
> > }
> >
> > Regards
> > Vijai Kumar K
> > +918095863361
> > Ext:699
> >
> ------------------------------------------------------------------------------
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