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authorOlivier Martin <olivier.martin@arm.com>2013-09-02 09:02:16 +0000
committeroliviermartin <oliviermartin@6f19259b-4bc3-4df7-8a09-765794883524>2013-09-02 09:02:16 +0000
commit8c1e795168bf0b63252e7ad293324fe5e2c5abe3 (patch)
treeafa9b73530e8b9d49bca6b7d1658ff767edcdd1c /MdePkg/Library
parentbf1a8c06996a0d4d1a4893970bc55ccc3cd6f95b (diff)
downloadedk2-platforms-8c1e795168bf0b63252e7ad293324fe5e2c5abe3.tar.xz
Add Memory fence for ARM Architecture (32 and 64 bit)
Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Olivier Martin <olivier.martin@arm.com> Reviewed-by: Liming Gao <liming.gao@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14615 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg/Library')
-rw-r--r--MdePkg/Library/BaseLib/AArch64/MemoryFence.S39
-rw-r--r--MdePkg/Library/BaseLib/Arm/MemoryFence.S39
-rw-r--r--MdePkg/Library/BaseLib/Arm/MemoryFence.asm39
-rw-r--r--MdePkg/Library/BaseLib/BaseLib.inf3
4 files changed, 120 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseLib/AArch64/MemoryFence.S b/MdePkg/Library/BaseLib/AArch64/MemoryFence.S
new file mode 100644
index 0000000000..5c69e08170
--- /dev/null
+++ b/MdePkg/Library/BaseLib/AArch64/MemoryFence.S
@@ -0,0 +1,39 @@
+##------------------------------------------------------------------------------
+#
+# MemoryFence() for AArch64
+#
+# Copyright (c) 2013, ARM Ltd. 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.
+#
+##------------------------------------------------------------------------------
+
+.text
+.p2align 2
+
+GCC_ASM_EXPORT(MemoryFence)
+
+
+#/**
+# Used to serialize load and store operations.
+#
+# All loads and stores that proceed calls to this function are guaranteed to be
+# globally visible when this function returns.
+#
+#**/
+#VOID
+#EFIAPI
+#MemoryFence (
+# VOID
+# );
+#
+ASM_PFX(MemoryFence):
+ // System wide Data Memory Barrier.
+ dmb sy
+ ret
diff --git a/MdePkg/Library/BaseLib/Arm/MemoryFence.S b/MdePkg/Library/BaseLib/Arm/MemoryFence.S
new file mode 100644
index 0000000000..a2284ba639
--- /dev/null
+++ b/MdePkg/Library/BaseLib/Arm/MemoryFence.S
@@ -0,0 +1,39 @@
+##------------------------------------------------------------------------------
+#
+# MemoryFence() for AArch64
+#
+# Copyright (c) 2013, ARM Ltd. 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.
+#
+##------------------------------------------------------------------------------
+
+.text
+.p2align 2
+
+GCC_ASM_EXPORT(MemoryFence)
+
+
+#/**
+# Used to serialize load and store operations.
+#
+# All loads and stores that proceed calls to this function are guaranteed to be
+# globally visible when this function returns.
+#
+#**/
+#VOID
+#EFIAPI
+#MemoryFence (
+# VOID
+# );
+#
+ASM_PFX(MemoryFence):
+ // System wide Data Memory Barrier.
+ dmb
+ bx lr
diff --git a/MdePkg/Library/BaseLib/Arm/MemoryFence.asm b/MdePkg/Library/BaseLib/Arm/MemoryFence.asm
new file mode 100644
index 0000000000..8f3d05f4b9
--- /dev/null
+++ b/MdePkg/Library/BaseLib/Arm/MemoryFence.asm
@@ -0,0 +1,39 @@
+;------------------------------------------------------------------------------
+;
+; MemoryFence() for AArch64
+;
+; Copyright (c) 2013, ARM Ltd. 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.
+;
+;------------------------------------------------------------------------------
+
+ EXPORT MemoryFence
+
+ AREA MemoryBarriers, CODE, READONLY
+
+;/**
+; Used to serialize load and store operations.
+;
+; All loads and stores that proceed calls to this function are guaranteed to be
+; globally visible when this function returns.
+;
+;**/
+;VOID
+;EFIAPI
+;MemoryFence (
+; VOID
+; );
+;
+MemoryFence FUNCTION
+ dmb
+ bx lr
+ ENDFUNC
+
+ END
diff --git a/MdePkg/Library/BaseLib/BaseLib.inf b/MdePkg/Library/BaseLib/BaseLib.inf
index 3e47b55d19..d431ff0c0e 100644
--- a/MdePkg/Library/BaseLib/BaseLib.inf
+++ b/MdePkg/Library/BaseLib/BaseLib.inf
@@ -468,6 +468,7 @@
Arm/GetInterruptsState.asm | RVCT
Arm/CpuPause.asm | RVCT
Arm/CpuBreakpoint.asm | RVCT
+ Arm/MemoryFence.asm | RVCT
Arm/Math64.S | GCC
Arm/SwitchStack.S | GCC
@@ -476,12 +477,14 @@
Arm/GetInterruptsState.S | GCC
Arm/SetJumpLongJump.S | GCC
Arm/CpuBreakpoint.S | GCC
+ Arm/MemoryFence.S | GCC
[Sources.AARCH64]
Arm/InternalSwitchStack.c
Arm/Unaligned.c
Math64.c
+ AArch64/MemoryFence.S | GCC
AArch64/SwitchStack.S | GCC
AArch64/EnableInterrupts.S | GCC
AArch64/DisableInterrupts.S | GCC