On 1 October 2013 18:47, Andrew Fish <[email protected]> wrote:
> The EFI Driver Model, EFI_DRIVER_BINDING_PROTOCOL, assumes that an EFI_HANDLE
> exists that you can connect to. So the Handle that represents the 1st device
> path node is usually added by a DXE driver. So on most platform this is
> usually the PCI root bridge driver. So in the entry point to your driver you
> need to install a new Handle with the root node of your device path. Then
> when you driver gets connected that handle exists. If you pass in a NULL
> handle to InstallMultipleProtocolInterfaces() it will create a new handle.
As I understand it, I first need to create a Handle. I Wrote:
EFI_STATUS
EFIAPI
MyLoadFile (
IN EFI_LOAD_FILE_PROTOCOL *This,
IN EFI_DEVICE_PATH_PROTOCOL *FilePath,
IN BOOLEAN BootPolicy,
IN OUT UINTN *BufferSize,
IN VOID *Buffer OPTIONAL
)
{
AsciiPrint("TRY LOAD FILE!\n");
//return EFI_SUCCESS;
return EFI_DEVICE_ERROR;
}
static EFI_LOAD_FILE_PROTOCOL mLoadFileProtocolAccess = { MyLoadFile };
EFI_STATUS
EFIAPI
DxeInitializeMyDXE (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
EFI_HANDLE MyDevice=NULL;
Status = gBS->InstallMultipleProtocolInterfaces(
&MyDevice,
&gEfiLoadFileProtocolGuid,
&mLoadFileProtocolAccess,
NULL
);
return Status;
}
As I understand this code must create new Handle and do nothing.
After what I may to bind this Handle to device path. (It is a next stage for me)
When running in QEMU program, UEFI stops after some while. What I make wrong?
> So in the entry point to your driver you need to install a new Handle with
> the root node of your device path
I do not understand, how can I do it?
---
Best regards,
Leonid Myravjev
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