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authorMichael Kinney <michael.d.kinney@intel.com>2015-12-14 06:11:17 +0000
committermdkinney <mdkinney@Edk2>2015-12-14 06:11:17 +0000
commitd910a704f84d645fd202ec1a7a2a68423d48fc88 (patch)
tree323340c6ea80f8c3c6cf61228ed310f460d3a6b3 /MdePkg
parentf87b742ab4c984986e0ff70ba64ffd4e6e36a25b (diff)
downloadedk2-d910a704f84d645fd202ec1a7a2a68423d48fc88.tar.gz
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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
Diffstat (limited to 'MdePkg')
-rw-r--r--MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsic.inf11
-rw-r--r--MdePkg/Library/BaseIoLibIntrinsic/IoLibEbc.c171
-rw-r--r--MdePkg/MdePkg.dsc1
3 files changed, 180 insertions, 3 deletions
diff --git a/MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsic.inf b/MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsic.inf
index d9529eb2e6..29b9e8bdfd 100644
--- a/MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsic.inf
+++ b/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
diff --git a/MdePkg/Library/BaseIoLibIntrinsic/IoLibEbc.c b/MdePkg/Library/BaseIoLibIntrinsic/IoLibEbc.c
new file mode 100644
index 0000000000..991c1e08d2
--- /dev/null
+++ b/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;
+}
diff --git a/MdePkg/MdePkg.dsc b/MdePkg/MdePkg.dsc
index 4ea367ccc0..473df4d886 100644
--- a/MdePkg/MdePkg.dsc
+++ b/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]