From eac42a514b8bfd5d6273d673d8d24a424b579d1c Mon Sep 17 00:00:00 2001 From: oliviermartin Date: Mon, 26 Mar 2012 10:59:50 +0000 Subject: [PATCH] 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 --- ArmPlatformPkg/Include/Library/ArmSmcLib.h | 44 +++++++++++ ArmPlatformPkg/Library/ArmSmcLib/ArmSmc.S | 76 +++++++++++++++++++ ArmPlatformPkg/Library/ArmSmcLib/ArmSmc.asm | 76 +++++++++++++++++++ .../Library/ArmSmcLib/ArmSmcLib.inf | 28 +++++++ 4 files changed, 224 insertions(+) create mode 100644 ArmPlatformPkg/Include/Library/ArmSmcLib.h create mode 100644 ArmPlatformPkg/Library/ArmSmcLib/ArmSmc.S create mode 100644 ArmPlatformPkg/Library/ArmSmcLib/ArmSmc.asm create mode 100644 ArmPlatformPkg/Library/ArmSmcLib/ArmSmcLib.inf diff --git a/ArmPlatformPkg/Include/Library/ArmSmcLib.h b/ArmPlatformPkg/Include/Library/ArmSmcLib.h new file mode 100644 index 0000000000..ff946f2dea --- /dev/null +++ b/ArmPlatformPkg/Include/Library/ArmSmcLib.h @@ -0,0 +1,44 @@ +/** @file +* +* 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. +* +**/ + +#ifndef __ARM_SMC_LIB__ +#define __ARM_SMC_LIB__ + +VOID +ArmCallSmc ( + IN OUT UINTN *Rx + ); + +VOID +ArmCallSmcArg1 ( + IN OUT UINTN *Rx, + IN OUT UINTN *Arg1 + ); + +VOID +ArmCallSmcArg2 ( + IN OUT UINTN *Rx, + IN OUT UINTN *Arg1, + IN OUT UINTN *Arg2 + ); + +VOID +ArmCallSmcArg3 ( + IN OUT UINTN *Rx, + IN OUT UINTN *Arg1, + IN OUT UINTN *Arg2, + IN OUT UINTN *Arg3 + ); + +#endif 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.
+# 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 -- 2.39.2