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| author | Olivier Martin <olivier.martin@arm.com> | 2014-03-26 19:31:01 +0000 |
|---|---|---|
| committer | oliviermartin <oliviermartin@6f19259b-4bc3-4df7-8a09-765794883524> | 2014-03-26 19:31:01 +0000 |
| commit | 52d44f77c25a133d56871e7f42f9b4700ded6835 (patch) | |
| tree | 5e7d591aa2badb3e0fdff0555e3826ad4129ef28 /ArmPkg | |
| parent | b7dd4dbd26b122a2972a150bfee1cff66ec283c0 (diff) | |
| download | edk2-platforms-52d44f77c25a133d56871e7f42f9b4700ded6835.tar.xz | |
ArmPkg/ArmLib: Added helper functions for accessing CPU ACTLR
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15396 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'ArmPkg')
| -rw-r--r-- | ArmPkg/Include/Library/ArmLib.h | 29 | ||||
| -rw-r--r-- | ArmPkg/Library/ArmLib/Common/AArch64/ArmLibSupport.S | 23 | ||||
| -rw-r--r-- | ArmPkg/Library/ArmLib/Common/Arm/ArmLibSupport.S | 17 | ||||
| -rw-r--r-- | ArmPkg/Library/ArmLib/Common/Arm/ArmLibSupport.asm | 15 | ||||
| -rw-r--r-- | ArmPkg/Library/ArmLib/Common/ArmLib.c | 30 |
5 files changed, 109 insertions, 5 deletions
diff --git a/ArmPkg/Include/Library/ArmLib.h b/ArmPkg/Include/Library/ArmLib.h index b0ce6c7cc6..a338f77909 100644 --- a/ArmPkg/Include/Library/ArmLib.h +++ b/ArmPkg/Include/Library/ArmLib.h @@ -625,4 +625,33 @@ ArmWriteHVBar ( IN UINTN HypModeVectorBase
);
+
+//
+// Helper functions for accessing CPU ACTLR
+//
+
+UINTN
+EFIAPI
+ArmReadCpuActlr (
+ VOID
+ );
+
+VOID
+EFIAPI
+ArmWriteCpuActlr (
+ IN UINTN Val
+ );
+
+VOID
+EFIAPI
+ArmSetCpuActlrBit (
+ IN UINTN Bits
+ );
+
+VOID
+EFIAPI
+ArmUnsetCpuActlrBit (
+ IN UINTN Bits
+ );
+
#endif // __ARM_LIB__
diff --git a/ArmPkg/Library/ArmLib/Common/AArch64/ArmLibSupport.S b/ArmPkg/Library/ArmLib/Common/AArch64/ArmLibSupport.S index 12e6d0c82b..f169d02aaa 100644 --- a/ArmPkg/Library/ArmLib/Common/AArch64/ArmLibSupport.S +++ b/ArmPkg/Library/ArmLib/Common/AArch64/ArmLibSupport.S @@ -37,6 +37,10 @@ GCC_ASM_EXPORT (ArmWriteScr) GCC_ASM_EXPORT (ArmWriteMVBar)
GCC_ASM_EXPORT (ArmCallWFE)
GCC_ASM_EXPORT (ArmCallSEV)
+GCC_ASM_EXPORT (ArmReadCpuExCr)
+GCC_ASM_EXPORT (ArmWriteCpuExCr)
+GCC_ASM_EXPORT (ArmReadCpuActlr)
+GCC_ASM_EXPORT (ArmWriteCpuActlr)
#------------------------------------------------------------------------------
@@ -196,5 +200,24 @@ ASM_PFX(ArmCallSEV): sev
ret
+ASM_PFX(ArmReadCpuExCr):
+ mrs x0, S3_1_c15_c2_1
+ ret
+
+ASM_PFX(ArmWriteCpuExCr):
+ msr S3_1_c15_c2_1, x0
+ dsb sy
+ isb
+ ret
+
+ASM_PFX(ArmReadCpuActlr):
+ mrs x0, S3_1_c15_c2_0
+ ret
+
+ASM_PFX(ArmWriteCpuActlr):
+ msr S3_1_c15_c2_0, x0
+ dsb sy
+ isb
+ ret
ASM_FUNCTION_REMOVE_IF_UNREFERENCED
diff --git a/ArmPkg/Library/ArmLib/Common/Arm/ArmLibSupport.S b/ArmPkg/Library/ArmLib/Common/Arm/ArmLibSupport.S index f3b949565f..08a433cc82 100644 --- a/ArmPkg/Library/ArmLib/Common/Arm/ArmLibSupport.S +++ b/ArmPkg/Library/ArmLib/Common/Arm/ArmLibSupport.S @@ -47,6 +47,8 @@ GCC_ASM_EXPORT(ArmWriteHVBar) GCC_ASM_EXPORT(ArmCallWFE)
GCC_ASM_EXPORT(ArmCallSEV)
GCC_ASM_EXPORT(ArmReadSctlr)
+GCC_ASM_EXPORT(ArmReadCpuActlr)
+GCC_ASM_EXPORT(ArmWriteCpuActlr)
#------------------------------------------------------------------------------
@@ -161,7 +163,6 @@ ASM_PFX(ArmWriteHVBar): mcr p15, 4, r0, c12, c0, 0
bx lr
-
ASM_PFX(ArmReadMVBar):
mrc p15, 0, r0, c12, c0, 1
bx lr
@@ -179,7 +180,17 @@ ASM_PFX(ArmCallSEV): bx lr
ASM_PFX(ArmReadSctlr):
- mrc p15, 0, R0, c1, c0, 0 @ Read SCTLR into R0 (Read control register configuration data)
- bx lr
+ mrc p15, 0, r0, c1, c0, 0 @ Read SCTLR into R0 (Read control register configuration data)
+ bx lr
+
+ASM_PFX(ArmReadCpuActlr):
+ mrc p15, 0, r0, c1, c0, 1
+ bx lr
+
+ASM_PFX(ArmWriteCpuActlr):
+ mcr p15, 0, r0, c1, c0, 1
+ dsb
+ isb
+ bx lr
ASM_FUNCTION_REMOVE_IF_UNREFERENCED
diff --git a/ArmPkg/Library/ArmLib/Common/Arm/ArmLibSupport.asm b/ArmPkg/Library/ArmLib/Common/Arm/ArmLibSupport.asm index 2e26ff35cf..9e6d57ef6f 100644 --- a/ArmPkg/Library/ArmLib/Common/Arm/ArmLibSupport.asm +++ b/ArmPkg/Library/ArmLib/Common/Arm/ArmLibSupport.asm @@ -47,6 +47,8 @@ EXPORT ArmCallWFE
EXPORT ArmCallSEV
EXPORT ArmReadSctlr
+ EXPORT ArmReadCpuActlr
+ EXPORT ArmWriteCpuActlr
AREA ArmLibSupport, CODE, READONLY
@@ -179,6 +181,17 @@ ArmCallSEV ArmReadSctlr
mrc p15, 0, r0, c1, c0, 0 // Read SCTLR into R0 (Read control register configuration data)
- bx lr
+ bx lr
+
+
+ArmReadCpuActlr
+ mrc p15, 0, r0, c1, c0, 1
+ bx lr
+
+ArmWriteCpuActlr
+ mcr p15, 0, r0, c1, c0, 1
+ dsb
+ isb
+ bx lr
END
diff --git a/ArmPkg/Library/ArmLib/Common/ArmLib.c b/ArmPkg/Library/ArmLib/Common/ArmLib.c index d70003ebb0..72d5af4a55 100644 --- a/ArmPkg/Library/ArmLib/Common/ArmLib.c +++ b/ArmPkg/Library/ArmLib/Common/ArmLib.c @@ -1,7 +1,7 @@ /** @file
Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
- Copyright (c) 2011 - 2012, ARM Ltd. All rights reserved.<BR>
+ Copyright (c) 2011 - 2014, 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
@@ -62,3 +62,31 @@ ArmUnsetAuxCrBit ( val &= ~Bits;
ArmWriteAuxCr(val);
}
+
+//
+// Helper functions for accessing CPUACTLR
+//
+
+VOID
+EFIAPI
+ArmSetCpuActlrBit (
+ IN UINTN Bits
+ )
+{
+ UINTN Value;
+ Value = ArmReadCpuActlr ();
+ Value |= Bits;
+ ArmWriteCpuActlr (Value);
+}
+
+VOID
+EFIAPI
+ArmUnsetCpuActlrBit (
+ IN UINTN Bits
+ )
+{
+ UINTN Value;
+ Value = ArmReadCpuActlr ();
+ Value &= ~Bits;
+ ArmWriteCpuActlr (Value);
+}
|