diff options
| author |   Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
|---|---|---|
| committer | Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
| commit | af1a266670d040d2f4083ff309d732d648afba2a (patch) | |
| tree | 2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/edk2/ArmPkg/Library/ArmSmcLib | |
| parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) | |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/edk2/ArmPkg/Library/ArmSmcLib')
| -rw-r--r-- | roms/edk2/ArmPkg/Library/ArmSmcLib/AArch64/ArmSmc.S | 32 | ||||
| -rw-r--r-- | roms/edk2/ArmPkg/Library/ArmSmcLib/Arm/ArmSmc.S | 44 | ||||
| -rw-r--r-- | roms/edk2/ArmPkg/Library/ArmSmcLib/Arm/ArmSmc.asm | 45 | ||||
| -rw-r--r-- | roms/edk2/ArmPkg/Library/ArmSmcLib/ArmSmcLib.inf | 28 |
4 files changed, 149 insertions, 0 deletions
diff --git a/roms/edk2/ArmPkg/Library/ArmSmcLib/AArch64/ArmSmc.S b/roms/edk2/ArmPkg/Library/ArmSmcLib/AArch64/ArmSmc.S new file mode 100644 index 000000000..4a8c2a8f5 --- /dev/null +++ b/roms/edk2/ArmPkg/Library/ArmSmcLib/AArch64/ArmSmc.S @@ -0,0 +1,32 @@ +//
+// Copyright (c) 2012-2014, ARM Limited. All rights reserved.
+//
+// SPDX-License-Identifier: BSD-2-Clause-Patent
+//
+//
+
+#include <AsmMacroIoLibV8.h>
+
+ASM_FUNC(ArmCallSmc)
+ // Push x0 on the stack - The stack must always be quad-word aligned
+ str x0, [sp, #-16]!
+
+ // Load the SMC arguments values into the appropriate registers
+ ldp x6, x7, [x0, #48]
+ ldp x4, x5, [x0, #32]
+ ldp x2, x3, [x0, #16]
+ ldp x0, x1, [x0, #0]
+
+ smc #0
+
+ // Pop the ARM_SMC_ARGS structure address from the stack into x9
+ ldr x9, [sp], #16
+
+ // Store the SMC returned values into the ARM_SMC_ARGS structure.
+ // A SMC call can return up to 4 values - we do not need to store back x4-x7.
+ stp x2, x3, [x9, #16]
+ stp x0, x1, [x9, #0]
+
+ mov x0, x9
+
+ ret
diff --git a/roms/edk2/ArmPkg/Library/ArmSmcLib/Arm/ArmSmc.S b/roms/edk2/ArmPkg/Library/ArmSmcLib/Arm/ArmSmc.S new file mode 100644 index 000000000..d218e7e70 --- /dev/null +++ b/roms/edk2/ArmPkg/Library/ArmSmcLib/Arm/ArmSmc.S @@ -0,0 +1,44 @@ +//
+// Copyright (c) 2012-2014, ARM Limited. All rights reserved.
+//
+// SPDX-License-Identifier: BSD-2-Clause-Patent
+//
+//
+
+#include <AsmMacroIoLib.h>
+
+.arch_extension sec
+
+ASM_FUNC(ArmCallSmc)
+ push {r4-r8}
+ // r0 will be popped just after the SMC call
+ push {r0}
+
+ // Load the SMC arguments values into the appropriate registers
+ ldr r7, [r0, #28]
+ ldr r6, [r0, #24]
+ ldr r5, [r0, #20]
+ ldr r4, [r0, #16]
+ ldr r3, [r0, #12]
+ ldr r2, [r0, #8]
+ ldr r1, [r0, #4]
+ ldr r0, [r0, #0]
+
+ smc #0
+
+ // Pop the ARM_SMC_ARGS structure address from the stack into r8
+ pop {r8}
+
+ // Load the SMC returned values into the appropriate registers
+ // A SMC call can return up to 4 values - we do not need to store back r4-r7.
+ str r3, [r8, #12]
+ str r2, [r8, #8]
+ str r1, [r8, #4]
+ str r0, [r8, #0]
+
+ mov r0, r8
+
+ // Restore the registers r4-r8
+ pop {r4-r8}
+
+ bx lr
diff --git a/roms/edk2/ArmPkg/Library/ArmSmcLib/Arm/ArmSmc.asm b/roms/edk2/ArmPkg/Library/ArmSmcLib/Arm/ArmSmc.asm new file mode 100644 index 000000000..d14573c9c --- /dev/null +++ b/roms/edk2/ArmPkg/Library/ArmSmcLib/Arm/ArmSmc.asm @@ -0,0 +1,45 @@ +//
+// Copyright (c) 2012-2014, ARM Limited. All rights reserved.
+//
+// SPDX-License-Identifier: BSD-2-Clause-Patent
+//
+//
+
+
+ INCLUDE AsmMacroExport.inc
+
+ RVCT_ASM_EXPORT ArmCallSmc
+ push {r4-r8}
+ // r0 will be popped just after the SMC call
+ push {r0}
+
+ // Load the SMC arguments values into the appropriate registers
+ ldr r7, [r0, #28]
+ ldr r6, [r0, #24]
+ ldr r5, [r0, #20]
+ ldr r4, [r0, #16]
+ ldr r3, [r0, #12]
+ ldr r2, [r0, #8]
+ ldr r1, [r0, #4]
+ ldr r0, [r0, #0]
+
+ smc #0
+
+ // Pop the ARM_SMC_ARGS structure address from the stack into r8
+ pop {r8}
+
+ // Load the SMC returned values into the appropriate registers
+ // A SMC call can return up to 4 values - we do not need to store back r4-r7.
+ str r3, [r8, #12]
+ str r2, [r8, #8]
+ str r1, [r8, #4]
+ str r0, [r8, #0]
+
+ mov r0, r8
+
+ // Restore the registers r4-r8
+ pop {r4-r8}
+
+ bx lr
+
+ END
diff --git a/roms/edk2/ArmPkg/Library/ArmSmcLib/ArmSmcLib.inf b/roms/edk2/ArmPkg/Library/ArmSmcLib/ArmSmcLib.inf new file mode 100644 index 000000000..4f4b09f45 --- /dev/null +++ b/roms/edk2/ArmPkg/Library/ArmSmcLib/ArmSmcLib.inf @@ -0,0 +1,28 @@ +#/** @file
+#
+# Copyright (c) 2012-2013, ARM Ltd. All rights reserved.<BR>
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+#**/
+
+[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.ARM]
+ Arm/ArmSmc.asm | RVCT
+ Arm/ArmSmc.S | GCC
+
+[Sources.AARCH64]
+ AArch64/ArmSmc.S
+
+[Packages]
+ MdePkg/MdePkg.dec
+ ArmPkg/ArmPkg.dec
+
+[BuildOptions]
+ RVCT:*_*_ARM_PLATFORM_FLAGS == --cpu 7-A.security
|