MdePkg/BaseIoLibIntrinsic: Add EBC support

The EBC instruction set supports memory and MMIO access, but not
I/O port access.  Add EBC support to BaseIoLibIntrinsic that
generates an ASSERT() if the IoReadXX()/IoWriteXX() APIs are used.
This matches the implementation for other CPU types that do not
support I/O port access.

Cc: Liming Gao <liming.gao@intel.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Michael Kinney <michael.d.kinney@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19234 6f19259b-4bc3-4df7-8a09-765794883524

MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsic.inf

@@ -3,9 +3,10 @@
 #
 #  I/O Library that uses compiler intrinsics to perform IN and OUT instructions
 #  for IA-32 and x64.  On IPF, I/O port requests are translated into MMIO requests.
-#  MMIO requests are forwarded directly to memory.
+#  MMIO requests are forwarded directly to memory.  For EBC, I/O port requests
+#  ASSERT().
 #
-#  Copyright (c) 2007 - 2014, Intel Corporation. All rights reserved.<BR>
+#  Copyright (c) 2007 - 2015, Intel Corporation. All rights reserved.<BR>
 #  Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
 #
 #  This program and the accompanying materials
@@ -29,7 +30,7 @@
 
 
 #
-#  VALID_ARCHITECTURES           = IA32 X64 IPF ARM AARCH64
+#  VALID_ARCHITECTURES           = IA32 X64 EBC IPF ARM AARCH64
 #
 
 [Sources]
@@ -49,6 +50,10 @@
   IoLibIcc.c    | INTEL
   IoLib.c
 
+[Sources.EBC]
+  IoLibEbc.c
+  IoLib.c
+
 [Sources.IPF]
   IoLibIpf.c
 

MdePkg/Library/BaseIoLibIntrinsic/IoLibEbc.c

@@ -0,0 +1,171 @@
+/** @file
+  I/O Library for EBC. 
+  
+  EBC does not support port I/O.  All APIs in this file ASSERT().
+
+  Copyright (c) 2015, 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 "BaseIoLibIntrinsicInternal.h"
+
+/**
+  Reads an 8-bit I/O port.
+
+  Reads the 8-bit I/O port specified by Port. The 8-bit read value is returned.
+  This function must guarantee that all I/O read and write operations are
+  serialized.
+
+  If 8-bit I/O port operations are not supported, then ASSERT().
+
+  @param  Port  The I/O port to read.
+
+  @return The value read.
+
+**/
+UINT8
+EFIAPI
+IoRead8 (
+  IN      UINTN                     Port
+  )
+{
+  ASSERT (FALSE);
+  return 0;
+}
+
+/**
+  Writes an 8-bit I/O port.
+
+  Writes the 8-bit I/O port specified by Port with the value specified by Value
+  and returns Value. This function must guarantee that all I/O read and write
+  operations are serialized.
+
+  If 8-bit I/O port operations are not supported, then ASSERT().
+
+  @param  Port  The I/O port to write.
+  @param  Value The value to write to the I/O port.
+
+  @return The value written to the I/O port.
+
+**/
+UINT8
+EFIAPI
+IoWrite8 (
+  IN      UINTN                     Port,
+  IN      UINT8                     Value
+  )
+{
+  ASSERT (FALSE);
+  return 0;
+}
+
+/**
+  Reads a 16-bit I/O port.
+
+  Reads the 16-bit I/O port specified by Port. The 16-bit read value is returned.
+  This function must guarantee that all I/O read and write operations are
+  serialized.
+
+  If 16-bit I/O port operations are not supported, then ASSERT().
+  If Port is not aligned on a 16-bit boundary, then ASSERT().
+
+  @param  Port  The I/O port to read.
+
+  @return The value read.
+
+**/
+UINT16
+EFIAPI
+IoRead16 (
+  IN      UINTN                     Port
+  )
+{
+  ASSERT (FALSE);
+  return 0;
+}
+
+/**
+  Writes a 16-bit I/O port.
+
+  Writes the 16-bit I/O port specified by Port with the value specified by Value
+  and returns Value. This function must guarantee that all I/O read and write
+  operations are serialized.
+
+  If 16-bit I/O port operations are not supported, then ASSERT().
+  If Port is not aligned on a 16-bit boundary, then ASSERT().
+  
+  @param  Port  The I/O port to write.
+  @param  Value The value to write to the I/O port.
+
+  @return The value written to the I/O port.
+
+**/
+UINT16
+EFIAPI
+IoWrite16 (
+  IN      UINTN                     Port,
+  IN      UINT16                    Value
+  )
+{
+  ASSERT (FALSE);
+  return 0;
+}
+
+/**
+  Reads a 32-bit I/O port.
+
+  Reads the 32-bit I/O port specified by Port. The 32-bit read value is returned.
+  This function must guarantee that all I/O read and write operations are
+  serialized.
+
+  If 32-bit I/O port operations are not supported, then ASSERT().
+  If Port is not aligned on a 32-bit boundary, then ASSERT().
+  
+  @param  Port  The I/O port to read.
+
+  @return The value read.
+
+**/
+UINT32
+EFIAPI
+IoRead32 (
+  IN      UINTN                     Port
+  )
+{
+  ASSERT (FALSE);
+  return 0;
+}
+
+/**
+  Writes a 32-bit I/O port.
+
+  Writes the 32-bit I/O port specified by Port with the value specified by Value
+  and returns Value. This function must guarantee that all I/O read and write
+  operations are serialized.
+
+  If 32-bit I/O port operations are not supported, then ASSERT().
+  If Port is not aligned on a 32-bit boundary, then ASSERT().
+  
+  @param  Port  The I/O port to write.
+  @param  Value The value to write to the I/O port.
+
+  @return The value written to the I/O port.
+
+**/
+UINT32
+EFIAPI
+IoWrite32 (
+  IN      UINTN                     Port,
+  IN      UINT32                    Value
+  )
+{
+  ASSERT (FALSE);
+  return 0;
+}

MdePkg/MdePkg.dsc

@@ -172,6 +172,7 @@
   MdePkg/Library/DxeTimerLibEsal/DxeTimerLibEsal.inf  
 
 [Components.EBC]
+  MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsic.inf
   MdePkg/Library/UefiRuntimeLib/UefiRuntimeLib.inf
 
 [Components.ARM, Components.AARCH64]