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UefiCpuPkg/PiSmmCpuDxeSmm: TransferApToSafeState() use UINTN params 

Update TransferApToSafeState() use UINTN params to reduce the
number of type casts required in these calls.  Also change
the NumberToFinish parameter from UINT32* to UINTN
NumberToFinishAddress to resolve issues with conversion from
a volatile pointer to a non-volatile pointer.  The assembly
code that receives the NumberToFinishAddress value must treat
that memory location as a volatile to track the number of APs.

Cc: Liming Gao <liming.gao@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Andrew Fish <afish@apple.com>
Cc: Jeff Fan <jeff.fan@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Michael Kinney <michael.d.kinney@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jeff Fan <jeff.fan@intel.com>
This commit is contained in:
Michael Kinney 2016-11-17 12:41:35 -08:00
parent 0468303899
commit 672b80c8b7
4 changed files with 28 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
UefiCpuPkg/PiSmmCpuDxeSmm/CpuS3.c
View File

@ -385,7 +385,7 @@ MPRendezvousProcedure (
CPU_REGISTER_TABLE *RegisterTableList;
UINT32 InitApicId;
UINTN Index;
UINT32 TopOfStack;
UINTN TopOfStack;
UINT8 Stack[128];
ProgramVirtualWireMode ();
@ -403,10 +403,10 @@ MPRendezvousProcedure (
//
// Place AP into the safe code, count down the number with lock mechanism in the safe code.
//
TopOfStack = (UINT32) (UINTN) Stack + sizeof (Stack);
TopOfStack &= ~(UINT32) (CPU_STACK_ALIGNMENT - 1);
TopOfStack = (UINTN) Stack + sizeof (Stack);
TopOfStack &= ~(UINTN) (CPU_STACK_ALIGNMENT - 1);
CopyMem ((VOID *) (UINTN) mApHltLoopCode, mApHltLoopCodeTemplate, sizeof (mApHltLoopCodeTemplate));
TransferApToSafeState ((UINT32) (UINTN) mApHltLoopCode, TopOfStack, &mNumberToFinish);
TransferApToSafeState ((UINTN)mApHltLoopCode, TopOfStack, (UINTN)&mNumberToFinish);
}
/**

16
UefiCpuPkg/PiSmmCpuDxeSmm/Ia32/SmmFuncsArch.c
View File

@ -129,23 +129,23 @@ InitGdt (
/**
Transfer AP to safe hlt-loop after it finished restore CPU features on S3 patch.
@param[in] ApHltLoopCode The 32-bit address of the safe hlt-loop function.
@param[in] ApHltLoopCode The address of the safe hlt-loop function.
@param[in] TopOfStack A pointer to the new stack to use for the ApHltLoopCode.
@param[in] NumberToFinish Semaphore of APs finish count.
@param[in] NumberToFinishAddress Address of Semaphore of APs finish count.
**/
VOID
TransferApToSafeState (
IN UINT32 ApHltLoopCode,
IN UINT32 TopOfStack,
IN UINT32 *NumberToFinish
IN UINTN ApHltLoopCode,
IN UINTN TopOfStack,
IN UINTN NumberToFinishAddress
)
{
SwitchStack (
(SWITCH_STACK_ENTRY_POINT) (UINTN) ApHltLoopCode,
NumberToFinish,
(SWITCH_STACK_ENTRY_POINT)ApHltLoopCode,
(VOID *)NumberToFinishAddress,
NULL,
(VOID *) (UINTN) TopOfStack
(VOID *)TopOfStack
);
//
// It should never reach here

10
UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h
View File

@ -974,16 +974,16 @@ GetAcpiS3EnableFlag (
/**
Transfer AP to safe hlt-loop after it finished restore CPU features on S3 patch.
@param[in] ApHltLoopCode The 32-bit address of the safe hlt-loop function.
@param[in] ApHltLoopCode The address of the safe hlt-loop function.
@param[in] TopOfStack A pointer to the new stack to use for the ApHltLoopCode.
@param[in] NumberToFinish Semaphore of APs finish count.
@param[in] NumberToFinishAddress Address of Semaphore of APs finish count.
**/
VOID
TransferApToSafeState (
IN UINT32 ApHltLoopCode,
IN UINT32 TopOfStack,
IN UINT32 *NumberToFinish
IN UINTN ApHltLoopCode,
IN UINTN TopOfStack,
IN UINTN NumberToFinishAddress
);
#endif

16
UefiCpuPkg/PiSmmCpuDxeSmm/X64/SmmFuncsArch.c
View File

@ -129,24 +129,24 @@ GetProtectedModeCS (
/**
Transfer AP to safe hlt-loop after it finished restore CPU features on S3 patch.
@param[in] ApHltLoopCode The 32-bit address of the safe hlt-loop function.
@param[in] ApHltLoopCode The address of the safe hlt-loop function.
@param[in] TopOfStack A pointer to the new stack to use for the ApHltLoopCode.
@param[in] NumberToFinish Semaphore of APs finish count.
@param[in] NumberToFinishAddress Address of Semaphore of APs finish count.
**/
VOID
TransferApToSafeState (
IN UINT32 ApHltLoopCode,
IN UINT32 TopOfStack,
IN UINT32 *NumberToFinish
IN UINTN ApHltLoopCode,
IN UINTN TopOfStack,
IN UINTN NumberToFinishAddress
)
{
AsmDisablePaging64 (
GetProtectedModeCS (),
(UINT32) (UINTN) ApHltLoopCode,
(UINT32) (UINTN) NumberToFinish,
(UINT32)ApHltLoopCode,
(UINT32)NumberToFinishAddress,
0,
TopOfStack
(UINT32)TopOfStack
);
//
// It should never reach here