ArmPlatformPkg/ArmPlatformLib: Added support for ArmPlatformIsPrimaryCore()
Checking if a core if the primary/boot core used to be done with the macro IS_PRIMARY_CORE(). Some platforms exposes configuration registers to change the primary core. Replacing the macro IS_PRIMARY_CORE() by ArmPlatformIsPrimaryCore() allows some flexibility in the way to check the primary core. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Olivier Martin <olivier.martin@arm.com> Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org> Acked-by: Ryan Harkin <ryan.harkin@linaro.org> git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14344 6f19259b-4bc3-4df7-8a09-765794883524
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@@ -40,11 +40,35 @@ typedef struct {
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UINT64 NumberOfBytes;
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} ARM_SYSTEM_MEMORY_REGION_DESCRIPTOR;
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/**
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Return the core position from the value of its MpId register
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This function returns the core position from the position 0 in the processor.
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This function might be called from assembler before any stack is set.
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@return Return the core position
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**/
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UINTN
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ArmPlatformGetCorePosition (
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IN UINTN MpId
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);
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/**
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Return a non-zero value if the callee is the primary core
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This function returns a non-zero value if the callee is the primary core.
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The primary core is the core responsible to initialize the hardware and run UEFI.
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This function might be called from assembler before any stack is set.
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@return Return a non-zero value if the callee is the primary core.
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**/
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UINTN
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ArmPlatformIsPrimaryCore (
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IN UINTN MpId
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);
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/**
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Return the current Boot Mode
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