diff options
Diffstat (limited to 'MdeModulePkg/Universal/DebugSupportDxe/Ipf/PlDebugSupport.c')
| -rw-r--r-- | MdeModulePkg/Universal/DebugSupportDxe/Ipf/PlDebugSupport.c | 467 |
1 files changed, 0 insertions, 467 deletions
diff --git a/MdeModulePkg/Universal/DebugSupportDxe/Ipf/PlDebugSupport.c b/MdeModulePkg/Universal/DebugSupportDxe/Ipf/PlDebugSupport.c deleted file mode 100644 index 44f59e8ec8..0000000000 --- a/MdeModulePkg/Universal/DebugSupportDxe/Ipf/PlDebugSupport.c +++ /dev/null @@ -1,467 +0,0 @@ -/** @file
- IPF specific functions to support Debug Support protocol.
-
-Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
-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.
-
-**/
-
-#include "PlDebugSupport.h"
-
-BOOLEAN mInHandler = FALSE;
-
-//
-// number of bundles to swap in ivt
-//
-#define NUM_BUNDLES_IN_STUB 5
-#define NUM_IVT_ENTRIES 64
-
-typedef struct {
- BUNDLE OrigBundles[NUM_BUNDLES_IN_STUB];
- CALLBACK_FUNC RegisteredCallback;
-} IVT_ENTRY;
-
-IVT_ENTRY IvtEntryTable[NUM_IVT_ENTRIES];
-
-//
-// IPF context record is overallocated by 512 bytes to guarantee a 512 byte alignment exists
-// within the buffer and still have a large enough buffer to hold a whole IPF context record.
-//
-UINT8 IpfContextBuf[sizeof (EFI_SYSTEM_CONTEXT_IPF) + 512];
-
-//
-// The PatchSaveBuffer is used to store the original bundles from the IVT where it is patched
-// with the common handler.
-//
-UINT8 PatchSaveBuffer[0x400];
-UINTN ExternalInterruptCount;
-
-
-/**
- IPF specific DebugSupport driver initialization.
-
- Must be public because it's referenced from DebugSupport.c
-
- @retval EFI_SUCCESS Always.
-
-**/
-EFI_STATUS
-PlInitializeDebugSupportDriver (
- VOID
- )
-{
- ZeroMem (IvtEntryTable, sizeof (IvtEntryTable));
- ExternalInterruptCount = 0;
- return EFI_SUCCESS;
-}
-
-/**
- Unload handler that is called during UnloadImage() - deallocates pool memory
- used by the driver.
-
- Must be public because it's referenced from DebugSuport.c
-
- @param ImageHandle The firmware allocated handle for the EFI image.
-
- @retval EFI_SUCCESS Always.
-
-**/
-EFI_STATUS
-EFIAPI
-PlUnloadDebugSupportDriver (
- IN EFI_HANDLE ImageHandle
- )
-{
- EFI_EXCEPTION_TYPE ExceptionType;
-
- for (ExceptionType = 0; ExceptionType < NUM_IVT_ENTRIES; ExceptionType++) {
- ManageIvtEntryTable (ExceptionType, NULL, NULL);
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- C routine that is called for all registered exceptions. This is the main
- exception dispatcher.
-
- Must be public because it's referenced from AsmFuncs.s.
-
- @param ExceptionType Specifies which processor exception.
- @param Context System Context.
-**/
-VOID
-CommonHandler (
- IN EFI_EXCEPTION_TYPE ExceptionType,
- IN EFI_SYSTEM_CONTEXT Context
- )
-{
- DEBUG_CODE_BEGIN ();
- if (mInHandler) {
- DEBUG ((EFI_D_INFO, "ERROR: Re-entered debugger!\n"
- " ExceptionType == %X\n"
- " Context == %X\n"
- " Context.SystemContextIpf->CrIip == %LX\n"
- " Context.SystemContextIpf->CrIpsr == %LX\n"
- " mInHandler == %X\n",
- (INT32)ExceptionType,
- Context,
- Context.SystemContextIpf->CrIip,
- Context.SystemContextIpf->CrIpsr,
- mInHandler));
- }
- DEBUG_CODE_END ();
-
- ASSERT (!mInHandler);
- mInHandler = TRUE;
- if (IvtEntryTable[ExceptionType].RegisteredCallback != NULL) {
- if (ExceptionType != EXCEPT_IPF_EXTERNAL_INTERRUPT) {
- IvtEntryTable[ExceptionType].RegisteredCallback (ExceptionType, Context.SystemContextIpf);
- } else {
- IvtEntryTable[ExceptionType].RegisteredCallback (Context.SystemContextIpf);
- }
- } else {
- ASSERT (0);
- }
-
- mInHandler = FALSE;
-}
-
-/**
- Given an integer number, return the physical address of the entry point in the IFT.
-
- @param HandlerIndex Index of the Handler
- @param EntryPoint IFT Entrypoint
-
-**/
-VOID
-GetHandlerEntryPoint (
- UINTN HandlerIndex,
- VOID **EntryPoint
- )
-{
- UINT8 *TempPtr;
-
- //
- // get base address of IVT
- //
- TempPtr = GetIva ();
-
- if (HandlerIndex < 20) {
- //
- // first 20 provide 64 bundles per vector
- //
- TempPtr += 0x400 * HandlerIndex;
- } else {
- //
- // the rest provide 16 bundles per vector
- //
- TempPtr += 0x5000 + 0x100 * (HandlerIndex - 20);
- }
-
- *EntryPoint = (VOID *) TempPtr;
-}
-
-/**
- This is the worker function that uninstalls and removes all handlers.
-
- @param ExceptionType Specifies which processor exception.
- @param NewBundles New Boundles.
- @param NewCallback A pointer to the new function to be registered.
-
- @retval EFI_ALEADY_STARTED Ivt already hooked.
- @retval EFI_SUCCESS Successfully uninstalled.
-
-**/
-EFI_STATUS
-ManageIvtEntryTable (
- IN EFI_EXCEPTION_TYPE ExceptionType,
- IN BUNDLE NewBundles[NUM_BUNDLES_IN_STUB],
- IN CALLBACK_FUNC NewCallback
- )
-{
- BUNDLE *B0Ptr;
- UINT64 InterruptFlags;
- EFI_TPL OldTpl;
-
- //
- // Get address of bundle 0
- //
- GetHandlerEntryPoint (ExceptionType, (VOID **) &B0Ptr);
-
- if (IvtEntryTable[ExceptionType].RegisteredCallback != NULL) {
- //
- // we've already installed to this vector
- //
- if (NewCallback != NULL) {
- //
- // if the input handler is non-null, error
- //
- return EFI_ALREADY_STARTED;
- } else {
- //
- // else remove the previously installed handler
- //
- OldTpl = gBS->RaiseTPL (TPL_HIGH_LEVEL);
- InterruptFlags = ProgramInterruptFlags (DISABLE_INTERRUPTS);
- if (ExceptionType == EXCEPT_IPF_EXTERNAL_INTERRUPT) {
- UnchainExternalInterrupt ();
- } else {
- UnhookEntry (ExceptionType);
- }
-
- ProgramInterruptFlags (InterruptFlags);
- gBS->RestoreTPL (OldTpl);
- //
- // re-init IvtEntryTable
- //
- ZeroMem (&IvtEntryTable[ExceptionType], sizeof (IVT_ENTRY));
- }
- } else {
- //
- // no user handler installed on this vector
- //
- if (NewCallback != NULL) {
- OldTpl = gBS->RaiseTPL (TPL_HIGH_LEVEL);
- InterruptFlags = ProgramInterruptFlags (DISABLE_INTERRUPTS);
- if (ExceptionType == EXCEPT_IPF_EXTERNAL_INTERRUPT) {
- ChainExternalInterrupt (NewCallback);
- } else {
- HookEntry (ExceptionType, NewBundles, NewCallback);
- }
-
- ProgramInterruptFlags (InterruptFlags);
- gBS->RestoreTPL (OldTpl);
- }
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Saves original IVT contents and inserts a few new bundles which are fixed up
- to store the ExceptionType and then call the common handler.
-
- @param ExceptionType Specifies which processor exception.
- @param NewBundles New Boundles.
- @param NewCallback A pointer to the new function to be hooked.
-
-**/
-VOID
-HookEntry (
- IN EFI_EXCEPTION_TYPE ExceptionType,
- IN BUNDLE NewBundles[4],
- IN CALLBACK_FUNC NewCallback
- )
-{
- BUNDLE *FixupBundle;
- BUNDLE *B0Ptr;
-
- //
- // Get address of bundle 0
- //
- GetHandlerEntryPoint (ExceptionType, (VOID **) &B0Ptr);
-
- //
- // copy original bundles from IVT to IvtEntryTable so we can restore them later
- //
- CopyMem (
- IvtEntryTable[ExceptionType].OrigBundles,
- B0Ptr,
- sizeof (BUNDLE) * NUM_BUNDLES_IN_STUB
- );
- //
- // insert new B0
- //
- CopyMem (B0Ptr, NewBundles, sizeof (BUNDLE) * NUM_BUNDLES_IN_STUB);
-
- //
- // fixup IVT entry so it stores its index and whether or not to chain...
- //
- FixupBundle = B0Ptr + 2;
- FixupBundle->High |= ExceptionType << 36;
-
- InstructionCacheFlush (B0Ptr, 5);
- IvtEntryTable[ExceptionType].RegisteredCallback = NewCallback;
-}
-
-/**
- Restores original IVT contents when unregistering a callback function.
-
- @param ExceptionType Specifies which processor exception.
-
-**/
-VOID
-UnhookEntry (
- IN EFI_EXCEPTION_TYPE ExceptionType
- )
-{
- BUNDLE *B0Ptr;
-
- //
- // Get address of bundle 0
- //
- GetHandlerEntryPoint (ExceptionType, (VOID **) &B0Ptr);
- //
- // restore original bundles in IVT
- //
- CopyMem (
- B0Ptr,
- IvtEntryTable[ExceptionType].OrigBundles,
- sizeof (BUNDLE) * NUM_BUNDLES_IN_STUB
- );
- InstructionCacheFlush (B0Ptr, 5);
-}
-
-/**
- Sets up cache flush and calls assembly function to chain external interrupt.
-
- Records new callback in IvtEntryTable.
-
- @param NewCallback A pointer to the interrupt handle.
-
-**/
-VOID
-ChainExternalInterrupt (
- IN CALLBACK_FUNC NewCallback
- )
-{
- VOID *Start;
-
- Start = (VOID *) ((UINT8 *) GetIva () + 0x400 * EXCEPT_IPF_EXTERNAL_INTERRUPT + 0x400);
- IvtEntryTable[EXCEPT_IPF_EXTERNAL_INTERRUPT].RegisteredCallback = NewCallback;
- ChainHandler ();
- InstructionCacheFlush (Start, 0x400);
-}
-
-/**
- Sets up cache flush and calls assembly function to restore external interrupt.
- Removes registered callback from IvtEntryTable.
-
-**/
-VOID
-UnchainExternalInterrupt (
- VOID
- )
-{
- VOID *Start;
-
- Start = (VOID *) ((UINT8 *) GetIva () + 0x400 * EXCEPT_IPF_EXTERNAL_INTERRUPT + 0x400);
- UnchainHandler ();
- InstructionCacheFlush (Start, 0x400);
- IvtEntryTable[EXCEPT_IPF_EXTERNAL_INTERRUPT].RegisteredCallback = NULL;
-}
-
-/**
- Returns the maximum value that may be used for the ProcessorIndex parameter in
- RegisterPeriodicCallback() and RegisterExceptionCallback().
-
- Hard coded to support only 1 processor for now.
-
- @param This A pointer to the EFI_DEBUG_SUPPORT_PROTOCOL instance.
- @param MaxProcessorIndex Pointer to a caller-allocated UINTN in which the maximum supported
- processor index is returned. Always 0 returned.
-
- @retval EFI_SUCCESS Always returned with **MaxProcessorIndex set to 0.
-
-**/
-EFI_STATUS
-EFIAPI
-GetMaximumProcessorIndex (
- IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
- OUT UINTN *MaxProcessorIndex
- )
-{
- *MaxProcessorIndex = 0;
- return (EFI_SUCCESS);
-}
-
-/**
- Registers a function to be called back periodically in interrupt context.
-
- @param This A pointer to the EFI_DEBUG_SUPPORT_PROTOCOL instance.
- @param ProcessorIndex Specifies which processor the callback function applies to.
- @param PeriodicCallback A pointer to a function of type PERIODIC_CALLBACK that is the main
- periodic entry point of the debug agent.
-
- @retval EFI_SUCCESS The function completed successfully.
- @retval EFI_ALREADY_STARTED Non-NULL PeriodicCallback parameter when a callback
- function was previously registered.
- @retval EFI_OUT_OF_RESOURCES System has insufficient memory resources to register new callback
- function.
-**/
-EFI_STATUS
-EFIAPI
-RegisterPeriodicCallback (
- IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
- IN UINTN ProcessorIndex,
- IN EFI_PERIODIC_CALLBACK PeriodicCallback
- )
-{
- return ManageIvtEntryTable (EXCEPT_IPF_EXTERNAL_INTERRUPT, NULL, PeriodicCallback);
-}
-
-/**
- Registers a function to be called when a given processor exception occurs.
-
- This code executes in boot services context.
-
- @param This A pointer to the EFI_DEBUG_SUPPORT_PROTOCOL instance.
- @param ProcessorIndex Specifies which processor the callback function applies to.
- @param ExceptionCallback A pointer to a function of type EXCEPTION_CALLBACK that is called
- when the processor exception specified by ExceptionType occurs.
- @param ExceptionType Specifies which processor exception to hook.
-
- @retval EFI_SUCCESS The function completed successfully.
- @retval EFI_ALREADY_STARTED Non-NULL PeriodicCallback parameter when a callback
- function was previously registered.
- @retval EFI_OUT_OF_RESOURCES System has insufficient memory resources to register new callback
- function.
-**/
-EFI_STATUS
-EFIAPI
-RegisterExceptionCallback (
- IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
- IN UINTN ProcessorIndex,
- IN EFI_EXCEPTION_CALLBACK ExceptionCallback,
- IN EFI_EXCEPTION_TYPE ExceptionType
- )
-{
- return ManageIvtEntryTable (
- ExceptionType,
- (BUNDLE *) ((EFI_PLABEL *) HookStub)->EntryPoint,
- ExceptionCallback
- );
-}
-
-/**
- Invalidates processor instruction cache for a memory range. Subsequent execution in this range
- causes a fresh memory fetch to retrieve code to be executed.
-
- @param This A pointer to the EFI_DEBUG_SUPPORT_PROTOCOL instance.
- @param ProcessorIndex Specifies which processor's instruction cache is to be invalidated.
- @param Start Specifies the physical base of the memory range to be invalidated.
- @param Length Specifies the minimum number of bytes in the processor's instruction
- cache to invalidate.
-
- @retval EFI_SUCCESS Always returned.
-
-**/
-EFI_STATUS
-EFIAPI
-InvalidateInstructionCache (
- IN EFI_DEBUG_SUPPORT_PROTOCOL *This,
- IN UINTN ProcessorIndex,
- IN VOID *Start,
- IN UINTN Length
- )
-{
- InstructionCacheFlush (Start, Length);
- return EFI_SUCCESS;
-}
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