Adding support for BeagleBoard.

ArmPkg - Supoprt for ARM specific things that can change as the architecture changes. Plus semihosting JTAG drivers.
EmbeddedPkg - Generic support for an embeddded platform. Including a light weight command line shell.
BeagleBoardPkg - Platform specifics for BeagleBoard. SD Card works, but USB has issues. Looks like a bug in the open source USB stack (Our internal stack works fine).


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9518 6f19259b-4bc3-4df7-8a09-765794883524

ArmPkg/Drivers/DebugSupportDxe/DebugSupport.c

@@ -0,0 +1,119 @@
+/** @file
+
+  Copyright (c) 2008-2009, Apple Inc. All rights reserved.
+  
+  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.
+
+**/
+
+#include <Uefi.h>
+
+#include <Library/CacheMaintenanceLib.h>
+#include <Library/DebugLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+
+#include <Protocol/Cpu.h>
+#include <Protocol/DebugSupport.h>
+#include <Protocol/TimerDebugSupport.h>
+
+EFI_STATUS
+EFIAPI
+DebugSupportGetMaximumProcessorIndex (
+  IN  EFI_DEBUG_SUPPORT_PROTOCOL  *This,
+  OUT UINTN                       *MaxProcessorIndex
+  )
+{
+  if (MaxProcessorIndex == NULL) {
+    return EFI_INVALID_PARAMETER;
+  }
+
+  *MaxProcessorIndex = 0;
+
+  return EFI_SUCCESS;
+}
+
+EFI_STATUS
+EFIAPI
+DebugSupportRegisterPeriodicCallback (
+  IN  EFI_DEBUG_SUPPORT_PROTOCOL  *This,
+  IN  UINTN                       ProcessorIndex,
+  IN  EFI_PERIODIC_CALLBACK       PeriodicCallback
+  )
+{
+  TIMER_DEBUG_SUPPORT_PROTOCOL  *Timer;
+  EFI_STATUS                    Status;
+
+  Status = gBS->LocateProtocol(&gTimerDebugSupportProtocolGuid, NULL, (VOID **)&Timer);
+  if (EFI_ERROR(Status)) {
+    return Status;
+  }
+
+  Status = Timer->RegisterPeriodicCallback(Timer, PeriodicCallback);
+
+  return Status;
+}
+
+EFI_STATUS
+EFIAPI
+DebugSupportRegisterExceptionCallback (
+  IN  EFI_DEBUG_SUPPORT_PROTOCOL  *This,
+  IN  UINTN                       ProcessorIndex,
+  IN  EFI_EXCEPTION_CALLBACK      ExceptionCallback,
+  IN  EFI_EXCEPTION_TYPE          ExceptionType
+  )
+{
+  EFI_CPU_ARCH_PROTOCOL *Cpu;
+  EFI_STATUS            Status;
+
+  Status = gBS->LocateProtocol(&gEfiCpuArchProtocolGuid, NULL, (VOID **)&Cpu);
+  if (EFI_ERROR(Status)) {
+    return Status;
+  }
+
+  Status = Cpu->RegisterInterruptHandler(Cpu, ExceptionType, (EFI_CPU_INTERRUPT_HANDLER)ExceptionCallback);
+
+  return Status;
+}
+
+EFI_STATUS
+EFIAPI
+DebugSupportInvalidateInstructionCache (
+  IN  EFI_DEBUG_SUPPORT_PROTOCOL  *This,
+  IN  UINTN                       ProcessorIndex,
+  IN  VOID                        *Start,
+  IN  UINT64                      Length
+  )
+{
+  InvalidateInstructionCacheRange(Start, Length);
+  return EFI_SUCCESS;
+}
+
+EFI_DEBUG_SUPPORT_PROTOCOL  mDebugSupport = {
+  IsaArm,
+  DebugSupportGetMaximumProcessorIndex,
+  DebugSupportRegisterPeriodicCallback,
+  DebugSupportRegisterExceptionCallback,
+  DebugSupportInvalidateInstructionCache
+};
+
+EFI_STATUS
+DebugSupportDxeInitialize (
+  IN EFI_HANDLE         ImageHandle,
+  IN EFI_SYSTEM_TABLE   *SystemTable
+  )
+{
+  EFI_STATUS  Status;
+  EFI_HANDLE  Handle = NULL;
+
+  ASSERT_PROTOCOL_ALREADY_INSTALLED (NULL, &gEfiDebugSupportProtocolGuid);
+  Status = gBS->InstallMultipleProtocolInterfaces(&Handle, &gEfiDebugSupportProtocolGuid, &mDebugSupport, NULL);
+
+  return Status;
+}
+