878ddf1fc3
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3 6f19259b-4bc3-4df7-8a09-765794883524
152 lines
4.3 KiB
C
152 lines
4.3 KiB
C
/*++
|
|
|
|
Copyright (c) 2006, Intel Corporation
|
|
All rights reserved. This program and the accompanying materials
|
|
are licensed and made available under the terms and conditions of the BSD License
|
|
which accompanies this distribution. The full text of the license may be found at
|
|
http://opensource.org/licenses/bsd-license.php
|
|
|
|
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
|
|
|
Module Name:
|
|
|
|
DebugSupport.c
|
|
|
|
Abstract:
|
|
|
|
Top level C file for debug support driver. Contains initialization function.
|
|
|
|
Revision History
|
|
|
|
--*/
|
|
|
|
//
|
|
// private header files
|
|
//
|
|
#include "plDebugSupport.h"
|
|
|
|
//
|
|
// This is a global that is the actual interface
|
|
//
|
|
EFI_DEBUG_SUPPORT_PROTOCOL gDebugSupportProtocolInterface = {
|
|
EFI_ISA,
|
|
GetMaximumProcessorIndex,
|
|
RegisterPeriodicCallback,
|
|
RegisterExceptionCallback,
|
|
InvalidateInstructionCache
|
|
};
|
|
|
|
//
|
|
// Driver Entry Point
|
|
//
|
|
EFI_STATUS
|
|
InitializeDebugSupportDriver (
|
|
IN EFI_HANDLE ImageHandle,
|
|
IN EFI_SYSTEM_TABLE *SystemTable
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
Driver entry point. Checks to see there's not already a DebugSupport protocol
|
|
installed for the selected processor before installing protocol.
|
|
|
|
Arguments:
|
|
IN EFI_HANDLE ImageHandle,
|
|
IN EFI_SYSTEM_TABLE *SystemTable
|
|
|
|
Returns:
|
|
|
|
EFI_STATUS
|
|
|
|
--*/
|
|
// TODO: ImageHandle - add argument and description to function comment
|
|
// TODO: SystemTable - add argument and description to function comment
|
|
{
|
|
EFI_LOADED_IMAGE_PROTOCOL *LoadedImageProtocolPtr;
|
|
EFI_STATUS Status;
|
|
EFI_HANDLE Handle;
|
|
EFI_HANDLE *HandlePtr;
|
|
UINTN NumHandles;
|
|
EFI_DEBUG_SUPPORT_PROTOCOL *DebugSupportProtocolPtr;
|
|
|
|
//
|
|
// Install Protocol Interface...
|
|
//
|
|
// First check to see that the debug support protocol for this processor
|
|
// type is not already installed
|
|
//
|
|
Status = gBS->LocateHandleBuffer (
|
|
ByProtocol,
|
|
&gEfiDebugSupportProtocolGuid,
|
|
NULL,
|
|
&NumHandles,
|
|
&HandlePtr
|
|
);
|
|
|
|
if (Status != EFI_NOT_FOUND) {
|
|
do {
|
|
NumHandles--;
|
|
Status = gBS->OpenProtocol (
|
|
HandlePtr[NumHandles],
|
|
&gEfiDebugSupportProtocolGuid,
|
|
(VOID **) &DebugSupportProtocolPtr,
|
|
ImageHandle,
|
|
NULL,
|
|
EFI_OPEN_PROTOCOL_GET_PROTOCOL
|
|
);
|
|
if (Status == EFI_SUCCESS && DebugSupportProtocolPtr->Isa == EFI_ISA) {
|
|
gBS->FreePool (HandlePtr);
|
|
Status = EFI_ALREADY_STARTED;
|
|
goto ErrExit;
|
|
}
|
|
} while (NumHandles > 0);
|
|
gBS->FreePool (HandlePtr);
|
|
}
|
|
|
|
//
|
|
// Get our image information and install platform specific unload handler
|
|
//
|
|
Status = gBS->OpenProtocol (
|
|
ImageHandle,
|
|
&gEfiLoadedImageProtocolGuid,
|
|
(VOID **) &LoadedImageProtocolPtr,
|
|
ImageHandle,
|
|
NULL,
|
|
EFI_OPEN_PROTOCOL_GET_PROTOCOL
|
|
);
|
|
ASSERT (!EFI_ERROR (Status));
|
|
if (Status != EFI_SUCCESS) {
|
|
goto ErrExit;
|
|
}
|
|
|
|
LoadedImageProtocolPtr->Unload = plUnloadDebugSupportDriver;
|
|
|
|
//
|
|
// Call hook for platform specific initialization
|
|
//
|
|
Status = plInitializeDebugSupportDriver ();
|
|
ASSERT (!EFI_ERROR (Status));
|
|
if (Status != EFI_SUCCESS) {
|
|
goto ErrExit;
|
|
}
|
|
|
|
//
|
|
// Install DebugSupport protocol to new handle
|
|
//
|
|
Handle = NULL;
|
|
Status = gBS->InstallProtocolInterface (
|
|
&Handle,
|
|
&gEfiDebugSupportProtocolGuid,
|
|
EFI_NATIVE_INTERFACE,
|
|
&gDebugSupportProtocolInterface
|
|
);
|
|
ASSERT (!EFI_ERROR (Status));
|
|
if (Status != EFI_SUCCESS) {
|
|
goto ErrExit;
|
|
}
|
|
|
|
ErrExit:
|
|
return Status;
|
|
}
|