mirror of
https://git.proxmox.com/git/mirror_edk2
synced 2025-11-04 10:19:50 +00:00
053e878bfb
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3737 Apply uncrustify changes to .c/.h files in the UefiCpuPkg package Cc: Andrew Fish <afish@apple.com> Cc: Leif Lindholm <leif@nuviainc.com> Cc: Michael D Kinney <michael.d.kinney@intel.com> Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com> Reviewed-by: Ray Ni <ray.ni@intel.com>
70 lines
2.0 KiB
C
70 lines
2.0 KiB
C
/** @file
|
|
Semaphore mechanism to indicate to the BSP that an AP has exited SMM
|
|
after SMBASE relocation.
|
|
|
|
Copyright (c) 2009 - 2015, Intel Corporation. All rights reserved.<BR>
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
**/
|
|
|
|
#include "PiSmmCpuDxeSmm.h"
|
|
|
|
X86_ASSEMBLY_PATCH_LABEL gPatchSmmRelocationOriginalAddressPtr32;
|
|
X86_ASSEMBLY_PATCH_LABEL gPatchRebasedFlagAddr32;
|
|
|
|
UINTN mSmmRelocationOriginalAddress;
|
|
volatile BOOLEAN *mRebasedFlag;
|
|
|
|
/**
|
|
AP Semaphore operation in 32-bit mode while BSP runs in 64-bit mode.
|
|
**/
|
|
VOID
|
|
SmmRelocationSemaphoreComplete32 (
|
|
VOID
|
|
);
|
|
|
|
/**
|
|
Hook return address of SMM Save State so that semaphore code
|
|
can be executed immediately after AP exits SMM to indicate to
|
|
the BSP that an AP has exited SMM after SMBASE relocation.
|
|
|
|
@param[in] CpuIndex The processor index.
|
|
@param[in] RebasedFlag A pointer to a flag that is set to TRUE
|
|
immediately after AP exits SMM.
|
|
|
|
**/
|
|
VOID
|
|
SemaphoreHook (
|
|
IN UINTN CpuIndex,
|
|
IN volatile BOOLEAN *RebasedFlag
|
|
)
|
|
{
|
|
SMRAM_SAVE_STATE_MAP *CpuState;
|
|
UINTN TempValue;
|
|
|
|
mRebasedFlag = RebasedFlag;
|
|
PatchInstructionX86 (
|
|
gPatchRebasedFlagAddr32,
|
|
(UINT32)(UINTN)mRebasedFlag,
|
|
4
|
|
);
|
|
|
|
CpuState = (SMRAM_SAVE_STATE_MAP *)(UINTN)(SMM_DEFAULT_SMBASE + SMRAM_SAVE_STATE_MAP_OFFSET);
|
|
mSmmRelocationOriginalAddress = HookReturnFromSmm (
|
|
CpuIndex,
|
|
CpuState,
|
|
(UINT64)(UINTN)&SmmRelocationSemaphoreComplete32,
|
|
(UINT64)(UINTN)&SmmRelocationSemaphoreComplete
|
|
);
|
|
|
|
//
|
|
// Use temp value to fix ICC compiler warning
|
|
//
|
|
TempValue = (UINTN)&mSmmRelocationOriginalAddress;
|
|
PatchInstructionX86 (
|
|
gPatchSmmRelocationOriginalAddressPtr32,
|
|
(UINT32)TempValue,
|
|
4
|
|
);
|
|
}
|