ArmPkg: Moved ARMv7 specific files to a 'Arm' subdirectory

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14180 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 0 insertions, 230 deletions

diff --git a/ArmPkg/Drivers/CpuDxe/Exception.c b/ArmPkg/Drivers/CpuDxe/Exception.c
deleted file mode 100644
index 55a7132193..0000000000
--- a/ArmPkg/Drivers/CpuDxe/Exception.c
+++ /dev/null
@@ -1,230 +0,0 @@
-/** @file

-

-  Copyright (c) 2008 - 2009, Apple Inc. 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 "CpuDxe.h" 

-

-//FIXME: Will not compile on non-ARMv7 builds

-#include <Chipset/ArmV7.h>

-

-VOID

-ExceptionHandlersStart (

-  VOID

-  );

-

-VOID

-ExceptionHandlersEnd (

-  VOID

-  );

-

-VOID

-CommonExceptionEntry (

-  VOID

-  );

-

-VOID

-AsmCommonExceptionEntry (

-  VOID

-  );

-

-

-EFI_EXCEPTION_CALLBACK  gExceptionHandlers[MAX_ARM_EXCEPTION + 1];

-EFI_EXCEPTION_CALLBACK  gDebuggerExceptionHandlers[MAX_ARM_EXCEPTION + 1];

-

-

-

-/**

-  This function registers and enables the handler specified by InterruptHandler for a processor 

-  interrupt or exception type specified by InterruptType. If InterruptHandler is NULL, then the 

-  handler for the processor interrupt or exception type specified by InterruptType is uninstalled. 

-  The installed handler is called once for each processor interrupt or exception.

-

-  @param  InterruptType    A pointer to the processor's current interrupt state. Set to TRUE if interrupts

-                           are enabled and FALSE if interrupts are disabled.

-  @param  InterruptHandler A pointer to a function of type EFI_CPU_INTERRUPT_HANDLER that is called

-                           when a processor interrupt occurs. If this parameter is NULL, then the handler

-                           will be uninstalled.

-

-  @retval EFI_SUCCESS           The handler for the processor interrupt was successfully installed or uninstalled.

-  @retval EFI_ALREADY_STARTED   InterruptHandler is not NULL, and a handler for InterruptType was

-                                previously installed.

-  @retval EFI_INVALID_PARAMETER InterruptHandler is NULL, and a handler for InterruptType was not

-                                previously installed.

-  @retval EFI_UNSUPPORTED       The interrupt specified by InterruptType is not supported.

-

-**/

-EFI_STATUS

-RegisterInterruptHandler (

-  IN EFI_EXCEPTION_TYPE             InterruptType,

-  IN EFI_CPU_INTERRUPT_HANDLER      InterruptHandler

-  )

-{

-  if (InterruptType > MAX_ARM_EXCEPTION) {

-    return EFI_UNSUPPORTED;

-  }

-

-  if ((InterruptHandler != NULL) && (gExceptionHandlers[InterruptType] != NULL)) {

-    return EFI_ALREADY_STARTED;

-  }

-

-  gExceptionHandlers[InterruptType] = InterruptHandler;

-

-  return EFI_SUCCESS;

-}

-

-

-

-

-VOID

-EFIAPI

-CommonCExceptionHandler (

-  IN     EFI_EXCEPTION_TYPE           ExceptionType,

-  IN OUT EFI_SYSTEM_CONTEXT           SystemContext

-  )

-{

-  if (ExceptionType <= MAX_ARM_EXCEPTION) {

-    if (gExceptionHandlers[ExceptionType]) {

-      gExceptionHandlers[ExceptionType] (ExceptionType, SystemContext);

-      return;

-    }

-  } else {

-    DEBUG ((EFI_D_ERROR, "Unknown exception type %d from %08x\n", ExceptionType, SystemContext.SystemContextArm->PC));

-    ASSERT (FALSE);

-  }

-  

-  if (ExceptionType == EXCEPT_ARM_SOFTWARE_INTERRUPT) {

-    //

-    // ARM JTAG debuggers some times use this vector, so it is not an error to get one

-    //

-    return;

-  }

-

-  DefaultExceptionHandler (ExceptionType, SystemContext);

-}

-

-

-

-EFI_STATUS

-InitializeExceptions (

-  IN EFI_CPU_ARCH_PROTOCOL    *Cpu

-  )

-{

-  EFI_STATUS           Status;

-  UINTN                Offset;

-  UINTN                Length;

-  UINTN                Index;

-  BOOLEAN              IrqEnabled;

-  BOOLEAN              FiqEnabled;

-  EFI_PHYSICAL_ADDRESS Base;

-  UINT32               *VectorBase;

-

-  Status = EFI_SUCCESS;

-  ZeroMem (gExceptionHandlers,sizeof(*gExceptionHandlers));

-

-  //

-  // Disable interrupts

-  //

-  Cpu->GetInterruptState (Cpu, &IrqEnabled);

-  Cpu->DisableInterrupt (Cpu);

-

-  //

-  // EFI does not use the FIQ, but a debugger might so we must disable 

-  // as we take over the exception vectors. 

-  //

-  FiqEnabled = ArmGetFiqState ();

-  ArmDisableFiq ();

-

-  if (FeaturePcdGet(PcdRelocateVectorTable) == TRUE) {

-    //

-    // Copy an implementation of the ARM exception vectors to PcdCpuVectorBaseAddress.

-    //

-    Length = (UINTN)ExceptionHandlersEnd - (UINTN)ExceptionHandlersStart;

-

-    // Check if the exception vector is in the low address

-    if (PcdGet32 (PcdCpuVectorBaseAddress) == 0x0) {

-      // Set SCTLR.V to 0 to enable VBAR to be used

-      ArmSetLowVectors ();

-    } else {

-      ArmSetHighVectors ();

-    }

-

-    //

-    // Reserve space for the exception handlers

-    //

-    Base = (EFI_PHYSICAL_ADDRESS)PcdGet32 (PcdCpuVectorBaseAddress);

-    VectorBase = (UINT32 *)(UINTN)Base;

-    Status = gBS->AllocatePages (AllocateAddress, EfiBootServicesCode, EFI_SIZE_TO_PAGES (Length), &Base);

-    // If the request was for memory that's not in the memory map (which is often the case for 0x00000000

-    // on embedded systems, for example, we don't want to hang up.  So we'll check here for a status of

-    // EFI_NOT_FOUND, and continue in that case.

-    if (EFI_ERROR(Status) && (Status != EFI_NOT_FOUND)) {

-      ASSERT_EFI_ERROR (Status);

-    }

-

-    if (FeaturePcdGet(PcdDebuggerExceptionSupport) == TRUE) {

-      // Save existing vector table, in case debugger is already hooked in

-      CopyMem ((VOID *)gDebuggerExceptionHandlers, (VOID *)VectorBase, sizeof (gDebuggerExceptionHandlers));

-    }

-

-    // Copy our assembly code into the page that contains the exception vectors.

-    CopyMem ((VOID *)VectorBase, (VOID *)ExceptionHandlersStart, Length);

-

-    //

-    // Patch in the common Assembly exception handler

-    //

-    Offset = (UINTN)CommonExceptionEntry - (UINTN)ExceptionHandlersStart;

-    *(UINTN *) ((UINT8 *)(UINTN)PcdGet32 (PcdCpuVectorBaseAddress) + Offset) = (UINTN)AsmCommonExceptionEntry;

-

-    //

-    // Initialize the C entry points for interrupts

-    //

-    for (Index = 0; Index <= MAX_ARM_EXCEPTION; Index++) {

-      if (!FeaturePcdGet(PcdDebuggerExceptionSupport) ||

-          (gDebuggerExceptionHandlers[Index] == 0) || (gDebuggerExceptionHandlers[Index] == (VOID *)(UINTN)0xEAFFFFFE)) {

-        // Exception handler contains branch to vector location (jmp $) so no handler

-        // NOTE: This code assumes vectors are ARM and not Thumb code

-        Status = RegisterInterruptHandler (Index, NULL);

-        ASSERT_EFI_ERROR (Status);

-      } else {

-        // If the debugger has already hooked put its vector back

-        VectorBase[Index] = (UINT32)(UINTN)gDebuggerExceptionHandlers[Index];

-      }

-    }

-

-    // Flush Caches since we updated executable stuff

-    InvalidateInstructionCacheRange ((VOID *)PcdGet32(PcdCpuVectorBaseAddress), Length);

-

-    //Note: On ARM processor with the Security Extension, the Vector Table can be located anywhere in the memory.

-    //      The Vector Base Address Register defines the location

-    ArmWriteVBar (PcdGet32(PcdCpuVectorBaseAddress));

-  } else {

-    // The Vector table must be 32-byte aligned

-    ASSERT(((UINT32)ExceptionHandlersStart & ((1 << 5)-1)) == 0);

-

-    // We do not copy the Exception Table at PcdGet32(PcdCpuVectorBaseAddress). We just set Vector Base Address to point into CpuDxe code.

-    ArmWriteVBar ((UINT32)ExceptionHandlersStart);

-  }

-

-  if (FiqEnabled) {

-    ArmEnableFiq ();

-  }

-

-  if (IrqEnabled) {

-    // 

-    // Restore interrupt state

-    //

-    Status = Cpu->EnableInterrupt (Cpu);

-  }

-

-  return Status;

-}