diff options
Diffstat (limited to 'MdeModulePkg/Universal/DebugSupportDxe/DebugSupport.c')
| -rw-r--r-- | MdeModulePkg/Universal/DebugSupportDxe/DebugSupport.c | 254 |
1 files changed, 127 insertions, 127 deletions
diff --git a/MdeModulePkg/Universal/DebugSupportDxe/DebugSupport.c b/MdeModulePkg/Universal/DebugSupportDxe/DebugSupport.c index 349a932b06..c46a291ec7 100644 --- a/MdeModulePkg/Universal/DebugSupportDxe/DebugSupport.c +++ b/MdeModulePkg/Universal/DebugSupportDxe/DebugSupport.c @@ -1,127 +1,127 @@ -/** @file
- Top level C file for debug support driver. Contains initialization function.
-
-Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
-SPDX-License-Identifier: BSD-2-Clause-Patent
-
-**/
-
-#include "PlDebugSupport.h"
-
-EFI_DEBUG_SUPPORT_PROTOCOL mDebugSupportProtocolInterface = {
- EFI_ISA,
- GetMaximumProcessorIndex,
- RegisterPeriodicCallback,
- RegisterExceptionCallback,
- InvalidateInstructionCache
-};
-
-/**
- Debug Support Driver entry point.
-
- Checks to see if there's not already a Debug Support protocol installed for
- the selected processor before installing it.
-
- @param[in] ImageHandle The firmware allocated handle for the EFI image.
- @param[in] SystemTable A pointer to the EFI System Table.
-
- @retval EFI_SUCCESS The entry point is executed successfully.
- @retval EFI_ALREADY_STARTED Debug Support protocol is installed already.
- @retval other Some error occurs when executing this entry point.
-
-**/
-EFI_STATUS
-EFIAPI
-InitializeDebugSupportDriver (
- IN EFI_HANDLE ImageHandle,
- IN EFI_SYSTEM_TABLE *SystemTable
- )
-{
- EFI_LOADED_IMAGE_PROTOCOL *LoadedImageProtocolPtr;
- EFI_STATUS Status;
- EFI_HANDLE Handle;
- EFI_HANDLE *HandlePtr;
- UINTN NumHandles;
- EFI_DEBUG_SUPPORT_PROTOCOL *DebugSupportProtocolPtr;
-
- //
- // 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)) {
- //
- // a Debug Support protocol has been installed for this processor
- //
- FreePool (HandlePtr);
- Status = EFI_ALREADY_STARTED;
- goto ErrExit;
- }
- } while (NumHandles > 0);
-
- 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 processor specific initialization
- //
- Status = PlInitializeDebugSupportDriver ();
- ASSERT (!EFI_ERROR (Status));
- if (Status != EFI_SUCCESS) {
- goto ErrExit;
- }
-
- //
- // Install Debug Support protocol to new handle
- //
- Handle = NULL;
- Status = gBS->InstallProtocolInterface (
- &Handle,
- &gEfiDebugSupportProtocolGuid,
- EFI_NATIVE_INTERFACE,
- &mDebugSupportProtocolInterface
- );
- ASSERT (!EFI_ERROR (Status));
- if (Status != EFI_SUCCESS) {
- goto ErrExit;
- }
-
-ErrExit:
- return Status;
-}
+/** @file + Top level C file for debug support driver. Contains initialization function. + +Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR> +SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#include "PlDebugSupport.h" + +EFI_DEBUG_SUPPORT_PROTOCOL mDebugSupportProtocolInterface = { + EFI_ISA, + GetMaximumProcessorIndex, + RegisterPeriodicCallback, + RegisterExceptionCallback, + InvalidateInstructionCache +}; + +/** + Debug Support Driver entry point. + + Checks to see if there's not already a Debug Support protocol installed for + the selected processor before installing it. + + @param[in] ImageHandle The firmware allocated handle for the EFI image. + @param[in] SystemTable A pointer to the EFI System Table. + + @retval EFI_SUCCESS The entry point is executed successfully. + @retval EFI_ALREADY_STARTED Debug Support protocol is installed already. + @retval other Some error occurs when executing this entry point. + +**/ +EFI_STATUS +EFIAPI +InitializeDebugSupportDriver ( + IN EFI_HANDLE ImageHandle, + IN EFI_SYSTEM_TABLE *SystemTable + ) +{ + EFI_LOADED_IMAGE_PROTOCOL *LoadedImageProtocolPtr; + EFI_STATUS Status; + EFI_HANDLE Handle; + EFI_HANDLE *HandlePtr; + UINTN NumHandles; + EFI_DEBUG_SUPPORT_PROTOCOL *DebugSupportProtocolPtr; + + // + // 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)) { + // + // a Debug Support protocol has been installed for this processor + // + FreePool (HandlePtr); + Status = EFI_ALREADY_STARTED; + goto ErrExit; + } + } while (NumHandles > 0); + + 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 processor specific initialization + // + Status = PlInitializeDebugSupportDriver (); + ASSERT (!EFI_ERROR (Status)); + if (Status != EFI_SUCCESS) { + goto ErrExit; + } + + // + // Install Debug Support protocol to new handle + // + Handle = NULL; + Status = gBS->InstallProtocolInterface ( + &Handle, + &gEfiDebugSupportProtocolGuid, + EFI_NATIVE_INTERFACE, + &mDebugSupportProtocolInterface + ); + ASSERT (!EFI_ERROR (Status)); + if (Status != EFI_SUCCESS) { + goto ErrExit; + } + +ErrExit: + return Status; +} |