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ArmPkg: Implement PeiServicesTablePointerLib using TPIDRURW register

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This implementation use the Tpidrurw software context register to
store the PEI Services Table Pointer.

The author of this patch is Eugene Cohen (HP).



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11750 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
oliviermartin
2011-06-03 09:43:12 +00:00
parent 76bc1743da
commit 0530bfe360
5 changed files with 140 additions and 0 deletions
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10
ArmPkg/Library/ArmLib/ArmV7/ArmV7Support.S
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@@ -52,6 +52,8 @@ GCC_ASM_EXPORT (ArmReadAuxCr)
GCC_ASM_EXPORT (ArmReadCbar)
GCC_ASM_EXPORT (ArmInvalidateInstructionAndDataTlb)
GCC_ASM_EXPORT (ArmReadMpidr)
GCC_ASM_EXPORT (ArmReadTpidrurw)
GCC_ASM_EXPORT (ArmWriteTpidrurw)
.set DC_ON, (0x1<<2)
.set IC_ON, (0x1<<12)
@@ -344,5 +346,13 @@ ASM_PFX(ArmInvalidateInstructionAndDataTlb):
ASM_PFX(ArmReadMpidr):
mrc p15, 0, r0, c0, c0, 5 @ read MPIDR
bx lr
ASM_PFX(ArmReadTpidrurw):
mrc p15, 0, r0, c13, c0, 2 @ read TPIDRURW
bx lr
ASM_PFX(ArmWriteTpidrurw):
mcr p15, 0, r0, c13, c0, 2 @ write TPIDRURW
bx lr
ASM_FUNCTION_REMOVE_IF_UNREFERENCED