From: Michael Kinney Date: Mon, 28 Nov 2016 22:13:24 +0000 (-0800) Subject: UefiCpuPkg/PiSmmCpuDxeSmm: Remove PSD layout assumptions X-Git-Tag: edk2-stable201903~5024 X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=commitdiff_plain;h=f12367a0b1de7838f1cb8e0839e168ed7b862333 UefiCpuPkg/PiSmmCpuDxeSmm: Remove PSD layout assumptions https://bugzilla.tianocore.org/show_bug.cgi?id=277 Remove dependency on layout of PROCESSOR_SMM_DESCRIPTOR everywhere possible. The only exception is the standard SMI entry handler template that is included with the PiSmmCpuDxeSmm module. This allows an instance of the SmmCpuFeaturesLib to provide alternate PROCESSOR_SMM_DESCRIPTOR structure layouts. Cc: Jiewen Yao Cc: Jeff Fan Cc: Feng Tian Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Michael Kinney Reviewed-by: Jeff Fan Reviewed-by: Feng Tian --- diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/Ia32/SmiEntry.S b/UefiCpuPkg/PiSmmCpuDxeSmm/Ia32/SmiEntry.S index 0c075582c3..378e06520c 100644 --- a/UefiCpuPkg/PiSmmCpuDxeSmm/Ia32/SmiEntry.S +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/Ia32/SmiEntry.S @@ -31,6 +31,9 @@ ASM_GLOBAL ASM_PFX(gSmiHandlerIdtr) .equ MSR_EFER, 0xc0000080 .equ MSR_EFER_XD, 0x800 +# +# Constants relating to PROCESSOR_SMM_DESCRIPTOR +# .equ DSC_OFFSET, 0xfb00 .equ DSC_GDTPTR, 0x30 .equ DSC_GDTSIZ, 0x38 diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/Ia32/SmiEntry.asm b/UefiCpuPkg/PiSmmCpuDxeSmm/Ia32/SmiEntry.asm index eda1708e3f..a4f4dcbda6 100644 --- a/UefiCpuPkg/PiSmmCpuDxeSmm/Ia32/SmiEntry.asm +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/Ia32/SmiEntry.asm @@ -26,6 +26,9 @@ MSR_IA32_MISC_ENABLE EQU 1A0h MSR_EFER EQU 0c0000080h MSR_EFER_XD EQU 0800h +; +; Constants relating to PROCESSOR_SMM_DESCRIPTOR +; DSC_OFFSET EQU 0fb00h DSC_GDTPTR EQU 30h DSC_GDTSIZ EQU 38h diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/Ia32/SmiEntry.nasm b/UefiCpuPkg/PiSmmCpuDxeSmm/Ia32/SmiEntry.nasm index d50a3170aa..4d2383ff97 100644 --- a/UefiCpuPkg/PiSmmCpuDxeSmm/Ia32/SmiEntry.nasm +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/Ia32/SmiEntry.nasm @@ -22,6 +22,9 @@ %define MSR_EFER 0xc0000080 %define MSR_EFER_XD 0x800 +; +; Constants relating to PROCESSOR_SMM_DESCRIPTOR +; %define DSC_OFFSET 0xfb00 %define DSC_GDTPTR 0x30 %define DSC_GDTSIZ 0x38 diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c b/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c index 01ddaee4e7..c146795acf 100644 --- a/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c @@ -1371,7 +1371,6 @@ InitializeMpServiceData ( { UINT32 Cr3; UINTN Index; - PROCESSOR_SMM_DESCRIPTOR *Psd; UINT8 *GdtTssTables; UINTN GdtTableStepSize; @@ -1406,24 +1405,16 @@ InitializeMpServiceData ( GdtTssTables = InitGdt (Cr3, &GdtTableStepSize); // - // Initialize PROCESSOR_SMM_DESCRIPTOR for each CPU + // Install SMI handler for each CPU // for (Index = 0; Index < mMaxNumberOfCpus; Index++) { - Psd = (PROCESSOR_SMM_DESCRIPTOR *)(VOID *)(UINTN)(mCpuHotPlugData.SmBase[Index] + SMM_PSD_OFFSET); - CopyMem (Psd, &gcPsd, sizeof (gcPsd)); - Psd->SmmGdtPtr = (UINT64)(UINTN)(GdtTssTables + GdtTableStepSize * Index); - Psd->SmmGdtSize = gcSmiGdtr.Limit + 1; - - // - // Install SMI handler - // InstallSmiHandler ( Index, (UINT32)mCpuHotPlugData.SmBase[Index], (VOID*)((UINTN)Stacks + (StackSize * Index)), StackSize, - (UINTN)Psd->SmmGdtPtr, - Psd->SmmGdtSize, + (UINTN)(GdtTssTables + GdtTableStepSize * Index), + gcSmiGdtr.Limit + 1, gcSmiIdtr.Base, gcSmiIdtr.Limit + 1, Cr3 diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c index f957de1f47..4bef60a1ac 100644 --- a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c @@ -711,22 +711,23 @@ PiCpuSmmEntry ( // // Compute tile size of buffer required to hold the CPU SMRAM Save State Map, extra CPU - // specific context in a PROCESSOR_SMM_DESCRIPTOR, and the SMI entry point. This size - // is rounded up to nearest power of 2. + // specific context start starts at SMBASE + SMM_PSD_OFFSET, and the SMI entry point. + // This size is rounded up to nearest power of 2. // TileCodeSize = GetSmiHandlerSize (); TileCodeSize = ALIGN_VALUE(TileCodeSize, SIZE_4KB); - TileDataSize = sizeof (SMRAM_SAVE_STATE_MAP) + sizeof (PROCESSOR_SMM_DESCRIPTOR); + TileDataSize = (SMRAM_SAVE_STATE_MAP_OFFSET - SMM_PSD_OFFSET) + sizeof (SMRAM_SAVE_STATE_MAP); TileDataSize = ALIGN_VALUE(TileDataSize, SIZE_4KB); TileSize = TileDataSize + TileCodeSize - 1; TileSize = 2 * GetPowerOfTwo32 ((UINT32)TileSize); DEBUG ((EFI_D_INFO, "SMRAM TileSize = 0x%08x (0x%08x, 0x%08x)\n", TileSize, TileCodeSize, TileDataSize)); // - // If the TileSize is larger than space available for the SMI Handler of CPU[i], - // the PROCESSOR_SMM_DESCRIPTOR of CPU[i+1] and the SMRAM Save State Map of CPU[i+1], - // the ASSERT(). If this ASSERT() is triggered, then the SMI Handler size must be - // reduced. + // If the TileSize is larger than space available for the SMI Handler of + // CPU[i], the extra CPU specific context of CPU[i+1], and the SMRAM Save + // State Map of CPU[i+1], then ASSERT(). If this ASSERT() is triggered, then + // the SMI Handler size must be reduced or the size of the extra CPU specific + // context must be reduced. // ASSERT (TileSize <= (SMRAM_SAVE_STATE_MAP_OFFSET + sizeof (SMRAM_SAVE_STATE_MAP) - SMM_HANDLER_OFFSET)); diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h index bd6abf28b5..611cbc190a 100644 --- a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h @@ -359,31 +359,6 @@ typedef struct { #define SMM_PSD_OFFSET 0xfb00 -typedef struct { - UINT64 Signature; // Offset 0x00 - UINT16 Reserved1; // Offset 0x08 - UINT16 Reserved2; // Offset 0x0A - UINT16 Reserved3; // Offset 0x0C - UINT16 SmmCs; // Offset 0x0E - UINT16 SmmDs; // Offset 0x10 - UINT16 SmmSs; // Offset 0x12 - UINT16 SmmOtherSegment; // Offset 0x14 - UINT16 Reserved4; // Offset 0x16 - UINT64 Reserved5; // Offset 0x18 - UINT64 Reserved6; // Offset 0x20 - UINT64 Reserved7; // Offset 0x28 - UINT64 SmmGdtPtr; // Offset 0x30 - UINT32 SmmGdtSize; // Offset 0x38 - UINT32 Reserved8; // Offset 0x3C - UINT64 Reserved9; // Offset 0x40 - UINT64 Reserved10; // Offset 0x48 - UINT16 Reserved11; // Offset 0x50 - UINT16 Reserved12; // Offset 0x52 - UINT32 Reserved13; // Offset 0x54 - UINT64 Reserved14; // Offset 0x58 -} PROCESSOR_SMM_DESCRIPTOR; - - /// /// All global semaphores' pointer /// @@ -427,7 +402,6 @@ extern EFI_PHYSICAL_ADDRESS mGdtBuffer; extern UINTN mGdtBufferSize; extern IA32_DESCRIPTOR gcSmiIdtr; extern VOID *gcSmiIdtrPtr; -extern CONST PROCESSOR_SMM_DESCRIPTOR gcPsd; extern UINT64 gPhyMask; extern SMM_DISPATCHER_MP_SYNC_DATA *mSmmMpSyncData; extern UINTN mSmmStackArrayBase; diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/SmmCpuMemoryManagement.c b/UefiCpuPkg/PiSmmCpuDxeSmm/SmmCpuMemoryManagement.c index d841dd014c..6becc1b445 100644 --- a/UefiCpuPkg/PiSmmCpuDxeSmm/SmmCpuMemoryManagement.c +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/SmmCpuMemoryManagement.c @@ -684,7 +684,7 @@ PatchSmmSaveStateMap ( TileCodeSize = GetSmiHandlerSize (); TileCodeSize = ALIGN_VALUE(TileCodeSize, SIZE_4KB); - TileDataSize = sizeof (SMRAM_SAVE_STATE_MAP) + sizeof (PROCESSOR_SMM_DESCRIPTOR); + TileDataSize = (SMRAM_SAVE_STATE_MAP_OFFSET - SMM_PSD_OFFSET) + sizeof (SMRAM_SAVE_STATE_MAP); TileDataSize = ALIGN_VALUE(TileDataSize, SIZE_4KB); TileSize = TileDataSize + TileCodeSize - 1; TileSize = 2 * GetPowerOfTwo32 ((UINT32)TileSize); diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/SmramSaveState.c b/UefiCpuPkg/PiSmmCpuDxeSmm/SmramSaveState.c index 539c0294cd..c37e9e8302 100644 --- a/UefiCpuPkg/PiSmmCpuDxeSmm/SmramSaveState.c +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/SmramSaveState.c @@ -1,7 +1,7 @@ /** @file Provides services to access SMRAM Save State Map -Copyright (c) 2010 - 2015, Intel Corporation. All rights reserved.
+Copyright (c) 2010 - 2016, Intel Corporation. All rights reserved.
This program and the accompanying materials are licensed and made available under the terms and conditions of the BSD License which accompanies this distribution. The full text of the license may be found at @@ -23,6 +23,34 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. #include #include +#include "PiSmmCpuDxeSmm.h" + +typedef struct { + UINT64 Signature; // Offset 0x00 + UINT16 Reserved1; // Offset 0x08 + UINT16 Reserved2; // Offset 0x0A + UINT16 Reserved3; // Offset 0x0C + UINT16 SmmCs; // Offset 0x0E + UINT16 SmmDs; // Offset 0x10 + UINT16 SmmSs; // Offset 0x12 + UINT16 SmmOtherSegment; // Offset 0x14 + UINT16 Reserved4; // Offset 0x16 + UINT64 Reserved5; // Offset 0x18 + UINT64 Reserved6; // Offset 0x20 + UINT64 Reserved7; // Offset 0x28 + UINT64 SmmGdtPtr; // Offset 0x30 + UINT32 SmmGdtSize; // Offset 0x38 + UINT32 Reserved8; // Offset 0x3C + UINT64 Reserved9; // Offset 0x40 + UINT64 Reserved10; // Offset 0x48 + UINT16 Reserved11; // Offset 0x50 + UINT16 Reserved12; // Offset 0x52 + UINT32 Reserved13; // Offset 0x54 + UINT64 Reserved14; // Offset 0x58 +} PROCESSOR_SMM_DESCRIPTOR; + +extern CONST PROCESSOR_SMM_DESCRIPTOR gcPsd; + // // EFER register LMA bit // @@ -657,6 +685,8 @@ InstallSmiHandler ( IN UINT32 Cr3 ) { + PROCESSOR_SMM_DESCRIPTOR *Psd; + if (SmmCpuFeaturesGetSmiHandlerSize () != 0) { // // Install SMI handler provided by library @@ -675,6 +705,14 @@ InstallSmiHandler ( return; } + // + // Initialize PROCESSOR_SMM_DESCRIPTOR + // + Psd = (PROCESSOR_SMM_DESCRIPTOR *)(VOID *)(UINTN)(SmBase + SMM_PSD_OFFSET); + CopyMem (Psd, &gcPsd, sizeof (gcPsd)); + Psd->SmmGdtPtr = (UINT64)GdtBase; + Psd->SmmGdtSize = (UINT32)GdtSize; + // // Initialize values in template before copy //