diff options
| author | Chen Fan <chen.fan.fnst@cn.fujitsu.com> | 2014-11-13 18:26:03 +0000 |
|---|---|---|
| committer | jljusten <jljusten@Edk2> | 2014-11-13 18:26:03 +0000 |
| commit | e343f8f7b35a400bb1d6e0edd7dddc53dd9e436d (patch) | |
| tree | 24777603e62a813c94999fee7f1e1c9da5cba6f4 /UefiCpuPkg | |
| parent | 6a26a597a38d36c670a5c1ce0bf54c8a413a1868 (diff) | |
| download | edk2-platforms-e343f8f7b35a400bb1d6e0edd7dddc53dd9e436d.tar.xz | |
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 <chen.fan.fnst@cn.fujitsu.com>
Reviewed-by: Jeff Fan <jeff.fan@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16351 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'UefiCpuPkg')
| -rw-r--r-- | UefiCpuPkg/CpuDxe/CpuMp.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/UefiCpuPkg/CpuDxe/CpuMp.c b/UefiCpuPkg/CpuDxe/CpuMp.c index bfd0d8d853..a87d67f180 100644 --- a/UefiCpuPkg/CpuDxe/CpuMp.c +++ b/UefiCpuPkg/CpuDxe/CpuMp.c @@ -25,6 +25,28 @@ VOID *mApStackStart = 0; 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 @@ ApEntryPointInC ( )
{
mNumberOfProcessors++;
+ mApStackStart = (UINT8*)mApStackStart + gApStackSize;
+
+ SwitchStack (
+ (SWITCH_STACK_ENTRY_POINT)(UINTN)ProcessorToIdleState,
+ NULL,
+ NULL,
+ mApStackStart);
}
|