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ArmPkg/ArmCpuLib: Replaced complex functions ArmCpuSynchronizeWait & ArmCpuSynchronizeSignal by sev & wfe

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Previsouly the synchronization of MpCore was using the SGI (Software
Generated Interrupt) to synchronize MpCore during the early boot.
This commit replaced this mechanism by the more appropriate SEV/WFE
instructions (Send/Wait Event instructions).
That also eases the port to a new cpu/platform.

Signed-off-by: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13249 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
oliviermartin
2012-05-02 19:55:32 +00:00
parent f463bb00ad
commit b1d41be7c9
19 changed files with 61 additions and 274 deletions
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18
ArmPkg/Drivers/ArmCpuLib/ArmCortexA8Lib/ArmCortexA8Lib.c
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@@ -19,24 +19,6 @@
#include <Chipset/ArmV7.h>
VOID
ArmCpuSynchronizeWait (
IN ARM_CPU_SYNCHRONIZE_EVENT Event
)
{
// The CortexA8 is a Unicore CPU. We must not use Synchronization functions
ASSERT(0);
}
VOID
ArmCpuSynchronizeSignal (
IN ARM_CPU_SYNCHRONIZE_EVENT Event
)
{
// The CortexA8 is a Unicore CPU. We must not use Synchronization functions
ASSERT(0);
}
VOID
ArmCpuSetup (
IN UINTN MpId