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ArmPkg/ArmLib: Added helper functions for accessing CPU ACTLR

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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
This commit is contained in:
Olivier Martin
2014-03-26 19:31:01 +00:00
committed by oliviermartin
parent b7dd4dbd26
commit 52d44f77c2
5 changed files with 109 additions and 5 deletions
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17
ArmPkg/Library/ArmLib/Common/Arm/ArmLibSupport.S
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@@ -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