diff options
| author | oliviermartin <oliviermartin@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-03-26 10:59:50 +0000 |
|---|---|---|
| committer | oliviermartin <oliviermartin@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-03-26 10:59:50 +0000 |
| commit | eac42a514b8bfd5d6273d673d8d24a424b579d1c (patch) | |
| tree | e0bd754fabf1f427003eeed5187a322b6aec07fd /ArmPlatformPkg/Library | |
| parent | a12da33bc1cd7a29f3333b94467eb3803bf4d927 (diff) | |
| download | edk2-platforms-eac42a514b8bfd5d6273d673d8d24a424b579d1c.tar.xz | |
ArmPlatformPkg/ArmSmcLib: Added helper library to make SMC call to the Secure World
This library adds C-wrapper around the SMC instruction and allows to pass
parameters to the Secure World.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13133 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'ArmPlatformPkg/Library')
| -rw-r--r-- | ArmPlatformPkg/Library/ArmSmcLib/ArmSmc.S | 76 | ||||
| -rw-r--r-- | ArmPlatformPkg/Library/ArmSmcLib/ArmSmc.asm | 76 | ||||
| -rw-r--r-- | ArmPlatformPkg/Library/ArmSmcLib/ArmSmcLib.inf | 28 |
3 files changed, 180 insertions, 0 deletions
diff --git a/ArmPlatformPkg/Library/ArmSmcLib/ArmSmc.S b/ArmPlatformPkg/Library/ArmSmcLib/ArmSmc.S new file mode 100644 index 0000000000..13f51a91b1 --- /dev/null +++ b/ArmPlatformPkg/Library/ArmSmcLib/ArmSmc.S @@ -0,0 +1,76 @@ +//
+// Copyright (c) 2012, ARM Limited. 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
+.align 3
+.arch_extension sec
+
+GCC_ASM_EXPORT(ArmCallSmc)
+GCC_ASM_EXPORT(ArmCallSmcArg1)
+GCC_ASM_EXPORT(ArmCallSmcArg2)
+GCC_ASM_EXPORT(ArmCallSmcArg3)
+
+ASM_PFX(ArmCallSmc):
+ push {r1}
+ mov r1, r0
+ ldr r0,[r1]
+ smc #0
+ str r0,[r1]
+ pop {r1}
+ blx lr
+
+// Arg1 in R1
+ASM_PFX(ArmCallSmcArg1):
+ push {r2-r3}
+ mov r2, r0
+ mov r3, r1
+ ldr r0,[r2]
+ ldr r1,[r3]
+ smc #0
+ str r0,[r2]
+ str r1,[r3]
+ pop {r2-r3}
+ blx lr
+
+ASM_PFX(ArmCallSmcArg2):
+ push {r3-r5}
+ mov r3, r0
+ mov r4, r1
+ mov r5, r2
+ ldr r0,[r3]
+ ldr r1,[r4]
+ ldr r2,[r5]
+ smc #0
+ str r0,[r3]
+ str r1,[r4]
+ str r2,[r5]
+ pop {r3-r5}
+ blx lr
+
+ASM_PFX(ArmCallSmcArg3):
+ push {r4-r7}
+ mov r4, r0
+ mov r5, r1
+ mov r6, r2
+ mov r7, r3
+ ldr r0,[r4]
+ ldr r1,[r5]
+ ldr r2,[r6]
+ ldr r3,[r7]
+ smc #0
+ str r0,[r4]
+ str r1,[r5]
+ str r2,[r6]
+ str r3,[r7]
+ pop {r4-r7}
+ blx lr
diff --git a/ArmPlatformPkg/Library/ArmSmcLib/ArmSmc.asm b/ArmPlatformPkg/Library/ArmSmcLib/ArmSmc.asm new file mode 100644 index 0000000000..0efb1770cd --- /dev/null +++ b/ArmPlatformPkg/Library/ArmSmcLib/ArmSmc.asm @@ -0,0 +1,76 @@ +//
+// Copyright (c) 2012, ARM Limited. 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 ArmCallSmc
+ EXPORT ArmCallSmcArg1
+ EXPORT ArmCallSmcArg2
+ EXPORT ArmCallSmcArg3
+
+ AREA ArmSmc, CODE, READONLY
+
+ArmCallSmc
+ push {r1}
+ mov r1, r0
+ ldr r0,[r1]
+ smc #0
+ str r0,[r1]
+ pop {r1}
+ blx lr
+
+// Arg1 in R1
+ArmCallSmcArg1
+ push {r2-r3}
+ mov r2, r0
+ mov r3, r1
+ ldr r0,[r2]
+ ldr r1,[r3]
+ smc #0
+ str r0,[r2]
+ str r1,[r3]
+ pop {r2-r3}
+ blx lr
+
+ArmCallSmcArg2
+ push {r3-r5}
+ mov r3, r0
+ mov r4, r1
+ mov r5, r2
+ ldr r0,[r3]
+ ldr r1,[r4]
+ ldr r2,[r5]
+ smc #0
+ str r0,[r3]
+ str r1,[r4]
+ str r2,[r5]
+ pop {r3-r5}
+ blx lr
+
+ArmCallSmcArg3
+ push {r4-r7}
+ mov r4, r0
+ mov r5, r1
+ mov r6, r2
+ mov r7, r3
+ ldr r0,[r4]
+ ldr r1,[r5]
+ ldr r2,[r6]
+ ldr r3,[r7]
+ smc #0
+ str r0,[r4]
+ str r1,[r5]
+ str r2,[r6]
+ str r3,[r7]
+ pop {r4-r7}
+ blx lr
+
+ END
diff --git a/ArmPlatformPkg/Library/ArmSmcLib/ArmSmcLib.inf b/ArmPlatformPkg/Library/ArmSmcLib/ArmSmcLib.inf new file mode 100644 index 0000000000..5df254844a --- /dev/null +++ b/ArmPlatformPkg/Library/ArmSmcLib/ArmSmcLib.inf @@ -0,0 +1,28 @@ +#/** @file
+#
+# Copyright (c) 2012, ARM Ltd. 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.
+#
+#**/
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = ArmSmcLib
+ FILE_GUID = eb3f17d5-a3cc-4eac-8912-84162d0f79da
+ MODULE_TYPE = BASE
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = ArmSmcLib
+
+[Sources.common]
+ ArmSmc.asm | RVCT
+ ArmSmc.S | GCC
+
+[Packages]
+ MdePkg/MdePkg.dec
+ ArmPlatformPkg/ArmPlatformPkg.dec
|