Revision: 16351
http://sourceforge.net/p/edk2/code/16351
Author: jljusten
Date: 2014-11-13 18:26:03 +0000 (Thu, 13 Nov 2014)
Log Message:
-----------
UefiCpuPkg/CpuDxe: Switch Ap Stack to NewStack
All APs use the same common stack to initialization. after
initialization, APs should switch to the stack of its own.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Chen Fan <[email protected]>
Reviewed-by: Jeff Fan <[email protected]>
Modified Paths:
--------------
trunk/edk2/UefiCpuPkg/CpuDxe/CpuMp.c
Modified: trunk/edk2/UefiCpuPkg/CpuDxe/CpuMp.c
===================================================================
--- trunk/edk2/UefiCpuPkg/CpuDxe/CpuMp.c 2014-11-13 18:25:48 UTC (rev
16350)
+++ trunk/edk2/UefiCpuPkg/CpuDxe/CpuMp.c 2014-11-13 18:26:03 UTC (rev
16351)
@@ -25,6 +25,28 @@
volatile UINTN mNumberOfProcessors;
/**
+ Application Processors do loop routine
+ after switch to its own stack.
+
+ @param Context1 A pointer to the context to pass into the function.
+ @param Context2 A pointer to the context to pass into the function.
+
+**/
+VOID
+ProcessorToIdleState (
+ IN VOID *Context1, OPTIONAL
+ IN VOID *Context2 OPTIONAL
+ )
+{
+ DEBUG ((DEBUG_INFO, "Ap apicid is %d\n", GetApicId ()));
+
+ AsmApDoneWithCommonStack ();
+
+ CpuSleep ();
+ CpuDeadLoop ();
+}
+
+/**
Application Processor C code entry point.
**/
@@ -35,6 +57,13 @@
)
{
mNumberOfProcessors++;
+ mApStackStart = (UINT8*)mApStackStart + gApStackSize;
+
+ SwitchStack (
+ (SWITCH_STACK_ENTRY_POINT)(UINTN)ProcessorToIdleState,
+ NULL,
+ NULL,
+ mApStackStart);
}
------------------------------------------------------------------------------
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