[AMD Official Use Only - General] Reviewed-by: Abner Chang <abner.ch...@amd.com>
> -----Original Message----- > From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Abdul > Lateef Attar via groups.io > Sent: Monday, April 10, 2023 7:10 PM > To: devel@edk2.groups.io > Cc: Attar, AbdulLateef (Abdul Lateef) <abdullateef.at...@amd.com>; > Grimes, Paul <paul.gri...@amd.com>; Kirkendall, Garrett > <garrett.kirkend...@amd.com>; Chang, Abner <abner.ch...@amd.com>; > Eric Dong <eric.d...@intel.com>; Ray Ni <ray...@intel.com>; Rahul Kumar > <rahul1.ku...@intel.com>; Gerd Hoffmann <kra...@redhat.com>; Ard > Biesheuvel <ardb+tianoc...@kernel.org>; Jiewen Yao > <jiewen....@intel.com>; Jordan Justen <jordan.l.jus...@intel.com> > Subject: [edk2-devel] [PATCH v8 8/9] UefiCpuPkg: Uses > SmmSmramSaveStateLib library > > Caution: This message originated from an External Source. Use proper > caution when opening attachments, clicking links, or responding. > > > BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4182 > > Uses new SmmSmramSaveStateLib library. > Removes old code. > > Cc: Paul Grimes <paul.gri...@amd.com> > Cc: Garrett Kirkendall <garrett.kirkend...@amd.com> > Cc: Abner Chang <abner.ch...@amd.com> > Cc: Eric Dong <eric.d...@intel.com> > Cc: Ray Ni <ray...@intel.com> > Cc: Rahul Kumar <rahul1.ku...@intel.com> > Cc: Gerd Hoffmann <kra...@redhat.com> > Cc: Ard Biesheuvel <ardb+tianoc...@kernel.org> > Cc: Jiewen Yao <jiewen....@intel.com> > Cc: Jordan Justen <jordan.l.jus...@intel.com> > Signed-off-by: Abdul Lateef Attar <abdat...@amd.com> > --- > UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.inf | 2 + > UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h | 2 + > UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c | 5 +- > UefiCpuPkg/PiSmmCpuDxeSmm/SmramSaveState.c | 500 +------------------ > 4 files changed, 9 insertions(+), 500 deletions(-) > > diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.inf > b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.inf > index 158e05e2646c..c57b6eea0e14 100644 > --- a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.inf > +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.inf > @@ -6,6 +6,7 @@ > # > # Copyright (c) 2009 - 2023, Intel Corporation. All rights reserved.<BR> # > Copyright (c) 2017, AMD Incorporated. All rights reserved.<BR> > +# Copyright (C) 2023 Advanced Micro Devices, Inc. All rights > +reserved.<BR> > # > # SPDX-License-Identifier: BSD-2-Clause-Patent # @@ -97,6 +98,7 @@ > [LibraryClasses] > ReportStatusCodeLib > SmmCpuFeaturesLib > PeCoffGetEntryPointLib > + SmmSmramSaveStateLib > > [Protocols] > gEfiSmmAccess2ProtocolGuid ## CONSUMES > diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h > b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h > index a5c2bdd971ca..10df1e908ba8 100644 > --- a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h > +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h > @@ -3,6 +3,7 @@ Agent Module to load other modules to deploy SMM > Entry Vector for X86 CPU. > > Copyright (c) 2009 - 2023, Intel Corporation. All rights reserved.<BR> > Copyright (c) 2017, AMD Incorporated. All rights reserved.<BR> > +Copyright (C) 2023 Advanced Micro Devices, Inc. All rights > +reserved.<BR> > > SPDX-License-Identifier: BSD-2-Clause-Patent > > @@ -50,6 +51,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent #include > <Library/SmmCpuFeaturesLib.h> #include > <Library/PeCoffGetEntryPointLib.h> > #include <Library/RegisterCpuFeaturesLib.h> > +#include <Library/SmmSmramSaveStateLib.h> > > #include <AcpiCpuData.h> > #include <CpuHotPlugData.h> > diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c > b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c > index c0e368ea9475..64643aec54d0 100644 > --- a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c > +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c > @@ -3,6 +3,7 @@ Agent Module to load other modules to deploy SMM > Entry Vector for X86 CPU. > > Copyright (c) 2009 - 2023, Intel Corporation. All rights reserved.<BR> > Copyright (c) 2017, AMD Incorporated. All rights reserved.<BR> > +Copyright (C) 2023 Advanced Micro Devices, Inc. All rights > +reserved.<BR> > > SPDX-License-Identifier: BSD-2-Clause-Patent > > @@ -278,7 +279,7 @@ SmmReadSaveState ( > > Status = SmmCpuFeaturesReadSaveStateRegister (CpuIndex, Register, > Width, Buffer); > if (Status == EFI_UNSUPPORTED) { > - Status = ReadSaveStateRegister (CpuIndex, Register, Width, Buffer); > + Status = SmramSaveStateReadRegister (CpuIndex, Register, Width, > + Buffer); > } > > return Status; > @@ -330,7 +331,7 @@ SmmWriteSaveState ( > > Status = SmmCpuFeaturesWriteSaveStateRegister (CpuIndex, Register, > Width, Buffer); > if (Status == EFI_UNSUPPORTED) { > - Status = WriteSaveStateRegister (CpuIndex, Register, Width, Buffer); > + Status = SmramSaveStateWriteRegister (CpuIndex, Register, Width, > + Buffer); > } > > return Status; > diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/SmramSaveState.c > b/UefiCpuPkg/PiSmmCpuDxeSmm/SmramSaveState.c > index c8ddc6083df6..1e316ee0acdb 100644 > --- a/UefiCpuPkg/PiSmmCpuDxeSmm/SmramSaveState.c > +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/SmramSaveState.c > @@ -2,6 +2,8 @@ > Provides services to access SMRAM Save State Map > > Copyright (c) 2010 - 2019, Intel Corporation. All rights reserved.<BR> > +Copyright (C) 2023 Advanced Micro Devices, Inc. All rights > +reserved.<BR> > + > SPDX-License-Identifier: BSD-2-Clause-Patent > > **/ > @@ -48,52 +50,6 @@ extern CONST PROCESSOR_SMM_DESCRIPTOR gcPsd; > // #define LMA BIT10 > > -/// > -/// Macro used to simplify the lookup table entries of type > CPU_SMM_SAVE_STATE_LOOKUP_ENTRY -/// -#define > SMM_CPU_OFFSET(Field) OFFSET_OF (SMRAM_SAVE_STATE_MAP, Field) > - > -/// > -/// Macro used to simplify the lookup table entries of type > CPU_SMM_SAVE_STATE_REGISTER_RANGE -/// -#define > SMM_REGISTER_RANGE(Start, End) { Start, End, End - Start + 1 } > - > -/// > -/// Structure used to describe a range of registers -/// -typedef struct { > - EFI_SMM_SAVE_STATE_REGISTER Start; > - EFI_SMM_SAVE_STATE_REGISTER End; > - UINTN Length; > -} CPU_SMM_SAVE_STATE_REGISTER_RANGE; > - > -/// > -/// Structure used to build a lookup table to retrieve the widths and > offsets - > /// associated with each supported EFI_SMM_SAVE_STATE_REGISTER value > -/// > - > -#define SMM_SAVE_STATE_REGISTER_SMMREVID_INDEX 1 > -#define SMM_SAVE_STATE_REGISTER_IOMISC_INDEX 2 > -#define SMM_SAVE_STATE_REGISTER_IOMEMADDR_INDEX 3 > -#define SMM_SAVE_STATE_REGISTER_MAX_INDEX 4 > - > -typedef struct { > - UINT8 Width32; > - UINT8 Width64; > - UINT16 Offset32; > - UINT16 Offset64Lo; > - UINT16 Offset64Hi; > - BOOLEAN Writeable; > -} CPU_SMM_SAVE_STATE_LOOKUP_ENTRY; > - > -/// > -/// Structure used to build a lookup table for the IOMisc width information - > /// -typedef struct { > - UINT8 Width; > - EFI_SMM_SAVE_STATE_IO_WIDTH IoWidth; > -} CPU_SMM_SAVE_STATE_IO_WIDTH; > - > /// > /// Variables from SMI Handler > /// > @@ -108,463 +64,11 @@ extern CONST UINT16 gcSmiHandlerSize; > // > IA32_DESCRIPTOR gSmiHandlerIdtr; > > -/// > -/// Table used by GetRegisterIndex() to convert an > EFI_SMM_SAVE_STATE_REGISTER -/// value to an index into a table of type > CPU_SMM_SAVE_STATE_LOOKUP_ENTRY -/// -CONST > CPU_SMM_SAVE_STATE_REGISTER_RANGE mSmmCpuRegisterRanges[] = { > - SMM_REGISTER_RANGE (EFI_SMM_SAVE_STATE_REGISTER_GDTBASE, > EFI_SMM_SAVE_STATE_REGISTER_LDTINFO), > - SMM_REGISTER_RANGE (EFI_SMM_SAVE_STATE_REGISTER_ES, > EFI_SMM_SAVE_STATE_REGISTER_RIP), > - SMM_REGISTER_RANGE (EFI_SMM_SAVE_STATE_REGISTER_RFLAGS, > EFI_SMM_SAVE_STATE_REGISTER_CR4), > - { (EFI_SMM_SAVE_STATE_REGISTER)0, > (EFI_SMM_SAVE_STATE_REGISTER)0, 0} > -}; > - > -/// > -/// Lookup table used to retrieve the widths and offsets associated with > each -/// supported EFI_SMM_SAVE_STATE_REGISTER value -/// -CONST > CPU_SMM_SAVE_STATE_LOOKUP_ENTRY mSmmCpuWidthOffset[] = { > - { 0, 0, 0, 0, > 0, FALSE }, // > Reserved > - > - // > - // Internally defined CPU Save State Registers. Not defined in PI SMM CPU > Protocol. > - // > - { 4, 4, SMM_CPU_OFFSET (x86.SMMRevId), SMM_CPU_OFFSET > (x64.SMMRevId), 0, FALSE }, // > SMM_SAVE_STATE_REGISTER_SMMREVID_INDEX = 1 > - { 4, 4, SMM_CPU_OFFSET (x86.IOMisc), SMM_CPU_OFFSET (x64.IOMisc), > 0, FALSE }, // > SMM_SAVE_STATE_REGISTER_IOMISC_INDEX > = 2 > - { 4, 8, SMM_CPU_OFFSET (x86.IOMemAddr), SMM_CPU_OFFSET > (x64.IOMemAddr), SMM_CPU_OFFSET (x64.IOMemAddr) + 4, FALSE }, // > SMM_SAVE_STATE_REGISTER_IOMEMADDR_INDEX = 3 > - > - // > - // CPU Save State registers defined in PI SMM CPU Protocol. > - // > - { 0, 8, 0, SMM_CPU_OFFSET > (x64.GdtBaseLoDword), > SMM_CPU_OFFSET (x64.GdtBaseHiDword), FALSE }, // > EFI_SMM_SAVE_STATE_REGISTER_GDTBASE = 4 > - { 0, 8, 0, SMM_CPU_OFFSET > (x64.IdtBaseLoDword), > SMM_CPU_OFFSET (x64.IdtBaseHiDword), FALSE }, // > EFI_SMM_SAVE_STATE_REGISTER_IDTBASE = 5 > - { 0, 8, 0, SMM_CPU_OFFSET > (x64.LdtBaseLoDword), > SMM_CPU_OFFSET (x64.LdtBaseHiDword), FALSE }, // > EFI_SMM_SAVE_STATE_REGISTER_LDTBASE = 6 > - { 0, 0, 0, 0, > 0, FALSE }, // > EFI_SMM_SAVE_STATE_REGISTER_GDTLIMIT = 7 > - { 0, 0, 0, 0, > 0, FALSE }, // > EFI_SMM_SAVE_STATE_REGISTER_IDTLIMIT = 8 > - { 0, 0, 0, 0, > 0, FALSE }, // > EFI_SMM_SAVE_STATE_REGISTER_LDTLIMIT = 9 > - { 0, 0, 0, 0, > 0, FALSE }, // > EFI_SMM_SAVE_STATE_REGISTER_LDTINFO = 10 > - > - { 4, 4, SMM_CPU_OFFSET (x86._ES), SMM_CPU_OFFSET (x64._ES), > 0, FALSE }, // > EFI_SMM_SAVE_STATE_REGISTER_ES = 20 > - { 4, 4, SMM_CPU_OFFSET (x86._CS), SMM_CPU_OFFSET (x64._CS), > 0, FALSE }, // > EFI_SMM_SAVE_STATE_REGISTER_CS = 21 > - { 4, 4, SMM_CPU_OFFSET (x86._SS), SMM_CPU_OFFSET (x64._SS), > 0, FALSE }, // > EFI_SMM_SAVE_STATE_REGISTER_SS = 22 > - { 4, 4, SMM_CPU_OFFSET (x86._DS), SMM_CPU_OFFSET (x64._DS), > 0, FALSE }, // > EFI_SMM_SAVE_STATE_REGISTER_DS = 23 > - { 4, 4, SMM_CPU_OFFSET (x86._FS), SMM_CPU_OFFSET (x64._FS), > 0, FALSE }, // > EFI_SMM_SAVE_STATE_REGISTER_FS = 24 > - { 4, 4, SMM_CPU_OFFSET (x86._GS), SMM_CPU_OFFSET (x64._GS), > 0, FALSE }, // > EFI_SMM_SAVE_STATE_REGISTER_GS = 25 > - { 0, 4, 0, SMM_CPU_OFFSET (x64._LDTR), > 0, > FALSE }, // EFI_SMM_SAVE_STATE_REGISTER_LDTR_SEL = 26 > - { 4, 4, SMM_CPU_OFFSET (x86._TR), SMM_CPU_OFFSET (x64._TR), > 0, FALSE }, // > EFI_SMM_SAVE_STATE_REGISTER_TR_SEL = > 27 > - { 4, 8, SMM_CPU_OFFSET (x86._DR7), SMM_CPU_OFFSET (x64._DR7), > SMM_CPU_OFFSET (x64._DR7) + 4, FALSE }, // > EFI_SMM_SAVE_STATE_REGISTER_DR7 = 28 > - { 4, 8, SMM_CPU_OFFSET (x86._DR6), SMM_CPU_OFFSET (x64._DR6), > SMM_CPU_OFFSET (x64._DR6) + 4, FALSE }, // > EFI_SMM_SAVE_STATE_REGISTER_DR6 = 29 > - { 0, 8, 0, SMM_CPU_OFFSET (x64._R8), > SMM_CPU_OFFSET (x64._R8) + 4, TRUE }, // > EFI_SMM_SAVE_STATE_REGISTER_R8 = 30 > - { 0, 8, 0, SMM_CPU_OFFSET (x64._R9), > SMM_CPU_OFFSET (x64._R9) + 4, TRUE }, // > EFI_SMM_SAVE_STATE_REGISTER_R9 = 31 > - { 0, 8, 0, SMM_CPU_OFFSET (x64._R10), > SMM_CPU_OFFSET (x64._R10) + 4, TRUE }, // > EFI_SMM_SAVE_STATE_REGISTER_R10 = 32 > - { 0, 8, 0, SMM_CPU_OFFSET (x64._R11), > SMM_CPU_OFFSET (x64._R11) + 4, TRUE }, // > EFI_SMM_SAVE_STATE_REGISTER_R11 = 33 > - { 0, 8, 0, SMM_CPU_OFFSET (x64._R12), > SMM_CPU_OFFSET (x64._R12) + 4, TRUE }, // > EFI_SMM_SAVE_STATE_REGISTER_R12 = 34 > - { 0, 8, 0, SMM_CPU_OFFSET (x64._R13), > SMM_CPU_OFFSET (x64._R13) + 4, TRUE }, // > EFI_SMM_SAVE_STATE_REGISTER_R13 = 35 > - { 0, 8, 0, SMM_CPU_OFFSET (x64._R14), > SMM_CPU_OFFSET (x64._R14) + 4, TRUE }, // > EFI_SMM_SAVE_STATE_REGISTER_R14 = 36 > - { 0, 8, 0, SMM_CPU_OFFSET (x64._R15), > SMM_CPU_OFFSET (x64._R15) + 4, TRUE }, // > EFI_SMM_SAVE_STATE_REGISTER_R15 = 37 > - { 4, 8, SMM_CPU_OFFSET (x86._EAX), SMM_CPU_OFFSET (x64._RAX), > SMM_CPU_OFFSET (x64._RAX) + 4, TRUE }, // > EFI_SMM_SAVE_STATE_REGISTER_RAX = 38 > - { 4, 8, SMM_CPU_OFFSET (x86._EBX), SMM_CPU_OFFSET (x64._RBX), > SMM_CPU_OFFSET (x64._RBX) + 4, TRUE }, // > EFI_SMM_SAVE_STATE_REGISTER_RBX = 39 > - { 4, 8, SMM_CPU_OFFSET (x86._ECX), SMM_CPU_OFFSET (x64._RCX), > SMM_CPU_OFFSET (x64._RCX) + 4, TRUE }, // > EFI_SMM_SAVE_STATE_REGISTER_RCX = 40 > - { 4, 8, SMM_CPU_OFFSET (x86._EDX), SMM_CPU_OFFSET (x64._RDX), > SMM_CPU_OFFSET (x64._RDX) + 4, TRUE }, // > EFI_SMM_SAVE_STATE_REGISTER_RDX = 41 > - { 4, 8, SMM_CPU_OFFSET (x86._ESP), SMM_CPU_OFFSET (x64._RSP), > SMM_CPU_OFFSET (x64._RSP) + 4, TRUE }, // > EFI_SMM_SAVE_STATE_REGISTER_RSP = 42 > - { 4, 8, SMM_CPU_OFFSET (x86._EBP), SMM_CPU_OFFSET (x64._RBP), > SMM_CPU_OFFSET (x64._RBP) + 4, TRUE }, // > EFI_SMM_SAVE_STATE_REGISTER_RBP = 43 > - { 4, 8, SMM_CPU_OFFSET (x86._ESI), SMM_CPU_OFFSET (x64._RSI), > SMM_CPU_OFFSET (x64._RSI) + 4, TRUE }, // > EFI_SMM_SAVE_STATE_REGISTER_RSI = 44 > - { 4, 8, SMM_CPU_OFFSET (x86._EDI), SMM_CPU_OFFSET (x64._RDI), > SMM_CPU_OFFSET (x64._RDI) + 4, TRUE }, // > EFI_SMM_SAVE_STATE_REGISTER_RDI = 45 > - { 4, 8, SMM_CPU_OFFSET (x86._EIP), SMM_CPU_OFFSET (x64._RIP), > SMM_CPU_OFFSET (x64._RIP) + 4, TRUE }, // > EFI_SMM_SAVE_STATE_REGISTER_RIP = 46 > - > - { 4, 8, SMM_CPU_OFFSET (x86._EFLAGS), SMM_CPU_OFFSET > (x64._RFLAGS), SMM_CPU_OFFSET (x64._RFLAGS) + 4, TRUE }, // > EFI_SMM_SAVE_STATE_REGISTER_RFLAGS = 51 > - { 4, 8, SMM_CPU_OFFSET (x86._CR0), SMM_CPU_OFFSET (x64._CR0), > SMM_CPU_OFFSET (x64._CR0) + 4, FALSE }, // > EFI_SMM_SAVE_STATE_REGISTER_CR0 = 52 > - { 4, 8, SMM_CPU_OFFSET (x86._CR3), SMM_CPU_OFFSET (x64._CR3), > SMM_CPU_OFFSET (x64._CR3) + 4, FALSE }, // > EFI_SMM_SAVE_STATE_REGISTER_CR3 = 53 > - { 0, 4, 0, SMM_CPU_OFFSET (x64._CR4), > 0, > FALSE }, // EFI_SMM_SAVE_STATE_REGISTER_CR4 = 54 > -}; > - > -/// > -/// Lookup table for the IOMisc width information -/// -CONST > CPU_SMM_SAVE_STATE_IO_WIDTH mSmmCpuIoWidth[] = { > - { 0, EFI_SMM_SAVE_STATE_IO_WIDTH_UINT8 }, // Undefined = 0 > - { 1, EFI_SMM_SAVE_STATE_IO_WIDTH_UINT8 }, // > SMM_IO_LENGTH_BYTE = 1 > - { 2, EFI_SMM_SAVE_STATE_IO_WIDTH_UINT16 }, // > SMM_IO_LENGTH_WORD = 2 > - { 0, EFI_SMM_SAVE_STATE_IO_WIDTH_UINT8 }, // Undefined = 3 > - { 4, EFI_SMM_SAVE_STATE_IO_WIDTH_UINT32 }, // > SMM_IO_LENGTH_DWORD = 4 > - { 0, EFI_SMM_SAVE_STATE_IO_WIDTH_UINT8 }, // Undefined = 5 > - { 0, EFI_SMM_SAVE_STATE_IO_WIDTH_UINT8 }, // Undefined = 6 > - { 0, EFI_SMM_SAVE_STATE_IO_WIDTH_UINT8 } // Undefined = 7 > -}; > - > -/// > -/// Lookup table for the IOMisc type information -/// -CONST > EFI_SMM_SAVE_STATE_IO_TYPE mSmmCpuIoType[] = { > - EFI_SMM_SAVE_STATE_IO_TYPE_OUTPUT, // SMM_IO_TYPE_OUT_DX > = 0 > - EFI_SMM_SAVE_STATE_IO_TYPE_INPUT, // SMM_IO_TYPE_IN_DX > = 1 > - EFI_SMM_SAVE_STATE_IO_TYPE_STRING, // SMM_IO_TYPE_OUTS > = 2 > - EFI_SMM_SAVE_STATE_IO_TYPE_STRING, // SMM_IO_TYPE_INS = > 3 > - (EFI_SMM_SAVE_STATE_IO_TYPE)0, // Undefined = 4 > - (EFI_SMM_SAVE_STATE_IO_TYPE)0, // Undefined = 5 > - EFI_SMM_SAVE_STATE_IO_TYPE_REP_PREFIX, // > SMM_IO_TYPE_REP_OUTS = 6 > - EFI_SMM_SAVE_STATE_IO_TYPE_REP_PREFIX, // SMM_IO_TYPE_REP_INS > = 7 > - EFI_SMM_SAVE_STATE_IO_TYPE_OUTPUT, // > SMM_IO_TYPE_OUT_IMMEDIATE = 8 > - EFI_SMM_SAVE_STATE_IO_TYPE_INPUT, // > SMM_IO_TYPE_OUT_IMMEDIATE = 9 > - (EFI_SMM_SAVE_STATE_IO_TYPE)0, // Undefined = 10 > - (EFI_SMM_SAVE_STATE_IO_TYPE)0, // Undefined = 11 > - (EFI_SMM_SAVE_STATE_IO_TYPE)0, // Undefined = 12 > - (EFI_SMM_SAVE_STATE_IO_TYPE)0, // Undefined = 13 > - (EFI_SMM_SAVE_STATE_IO_TYPE)0, // Undefined = 14 > - (EFI_SMM_SAVE_STATE_IO_TYPE)0 // Undefined = 15 > -}; > - > /// > /// The mode of the CPU at the time an SMI occurs /// > UINT8 mSmmSaveStateRegisterLma; > > -/** > - Read information from the CPU save state. > - > - @param Register Specifies the CPU register to read form the save state. > - > - @retval 0 Register is not valid > - @retval >0 Index into mSmmCpuWidthOffset[] associated with Register > - > -**/ > -UINTN > -GetRegisterIndex ( > - IN EFI_SMM_SAVE_STATE_REGISTER Register > - ) > -{ > - UINTN Index; > - UINTN Offset; > - > - for (Index = 0, Offset = SMM_SAVE_STATE_REGISTER_MAX_INDEX; > mSmmCpuRegisterRanges[Index].Length != 0; Index++) { > - if ((Register >= mSmmCpuRegisterRanges[Index].Start) && (Register <= > mSmmCpuRegisterRanges[Index].End)) { > - return Register - mSmmCpuRegisterRanges[Index].Start + Offset; > - } > - > - Offset += mSmmCpuRegisterRanges[Index].Length; > - } > - > - return 0; > -} > - > -/** > - Read a CPU Save State register on the target processor. > - > - This function abstracts the differences that whether the CPU Save State > register is in the > - IA32 CPU Save State Map or X64 CPU Save State Map. > - > - This function supports reading a CPU Save State register in SMBase > relocation handler. > - > - @param[in] CpuIndex Specifies the zero-based index of the CPU save > state. > - @param[in] RegisterIndex Index into mSmmCpuWidthOffset[] look up > table. > - @param[in] Width The number of bytes to read from the CPU save > state. > - @param[out] Buffer Upon return, this holds the CPU register value > read from the save state. > - > - @retval EFI_SUCCESS The register was read from Save State. > - @retval EFI_NOT_FOUND The register is not defined for the Save > State > of Processor. > - @retval EFI_INVALID_PARAMETER This or Buffer is NULL. > - > -**/ > -EFI_STATUS > -ReadSaveStateRegisterByIndex ( > - IN UINTN CpuIndex, > - IN UINTN RegisterIndex, > - IN UINTN Width, > - OUT VOID *Buffer > - ) > -{ > - SMRAM_SAVE_STATE_MAP *CpuSaveState; > - > - if (RegisterIndex == 0) { > - return EFI_NOT_FOUND; > - } > - > - CpuSaveState = gSmst->CpuSaveState[CpuIndex]; > - > - if (mSmmSaveStateRegisterLma == > EFI_SMM_SAVE_STATE_REGISTER_LMA_32BIT) { > - // > - // If 32-bit mode width is zero, then the specified register can not be > accessed > - // > - if (mSmmCpuWidthOffset[RegisterIndex].Width32 == 0) { > - return EFI_NOT_FOUND; > - } > - > - // > - // If Width is bigger than the 32-bit mode width, then the specified > register can not be accessed > - // > - if (Width > mSmmCpuWidthOffset[RegisterIndex].Width32) { > - return EFI_INVALID_PARAMETER; > - } > - > - // > - // Write return buffer > - // > - ASSERT (CpuSaveState != NULL); > - CopyMem (Buffer, (UINT8 *)CpuSaveState + > mSmmCpuWidthOffset[RegisterIndex].Offset32, Width); > - } else { > - // > - // If 64-bit mode width is zero, then the specified register can not be > accessed > - // > - if (mSmmCpuWidthOffset[RegisterIndex].Width64 == 0) { > - return EFI_NOT_FOUND; > - } > - > - // > - // If Width is bigger than the 64-bit mode width, then the specified > register can not be accessed > - // > - if (Width > mSmmCpuWidthOffset[RegisterIndex].Width64) { > - return EFI_INVALID_PARAMETER; > - } > - > - // > - // Write at most 4 of the lower bytes of the return buffer > - // > - CopyMem (Buffer, (UINT8 *)CpuSaveState + > mSmmCpuWidthOffset[RegisterIndex].Offset64Lo, MIN (4, Width)); > - if (Width > 4) { > - // > - // Write at most 4 of the upper bytes of the return buffer > - // > - CopyMem ((UINT8 *)Buffer + 4, (UINT8 *)CpuSaveState + > mSmmCpuWidthOffset[RegisterIndex].Offset64Hi, Width - 4); > - } > - } > - > - return EFI_SUCCESS; > -} > - > -/** > - Read a CPU Save State register on the target processor. > - > - This function abstracts the differences that whether the CPU Save State > register is in the > - IA32 CPU Save State Map or X64 CPU Save State Map. > - > - This function supports reading a CPU Save State register in SMBase > relocation handler. > - > - @param[in] CpuIndex Specifies the zero-based index of the CPU save > state. > - @param[in] RegisterIndex Index into mSmmCpuWidthOffset[] look up > table. > - @param[in] Width The number of bytes to read from the CPU save > state. > - @param[out] Buffer Upon return, this holds the CPU register value > read from the save state. > - > - @retval EFI_SUCCESS The register was read from Save State. > - @retval EFI_NOT_FOUND The register is not defined for the Save > State > of Processor. > - @retval EFI_INVALID_PARAMETER Buffer is NULL, or Width does not meet > requirement per Register type. > - > -**/ > -EFI_STATUS > -EFIAPI > -ReadSaveStateRegister ( > - IN UINTN CpuIndex, > - IN EFI_SMM_SAVE_STATE_REGISTER Register, > - IN UINTN Width, > - OUT VOID *Buffer > - ) > -{ > - UINT32 SmmRevId; > - SMRAM_SAVE_STATE_IOMISC IoMisc; > - EFI_SMM_SAVE_STATE_IO_INFO *IoInfo; > - > - // > - // Check for special EFI_SMM_SAVE_STATE_REGISTER_LMA > - // > - if (Register == EFI_SMM_SAVE_STATE_REGISTER_LMA) { > - // > - // Only byte access is supported for this register > - // > - if (Width != 1) { > - return EFI_INVALID_PARAMETER; > - } > - > - *(UINT8 *)Buffer = mSmmSaveStateRegisterLma; > - > - return EFI_SUCCESS; > - } > - > - // > - // Check for special EFI_SMM_SAVE_STATE_REGISTER_IO > - // > - if (Register == EFI_SMM_SAVE_STATE_REGISTER_IO) { > - // > - // Get SMM Revision ID > - // > - ReadSaveStateRegisterByIndex (CpuIndex, > SMM_SAVE_STATE_REGISTER_SMMREVID_INDEX, sizeof (SmmRevId), > &SmmRevId); > - > - // > - // See if the CPU supports the IOMisc register in the save state > - // > - if (SmmRevId < SMRAM_SAVE_STATE_MIN_REV_ID_IOMISC) { > - return EFI_NOT_FOUND; > - } > - > - // > - // Get the IOMisc register value > - // > - ReadSaveStateRegisterByIndex (CpuIndex, > SMM_SAVE_STATE_REGISTER_IOMISC_INDEX, sizeof (IoMisc.Uint32), > &IoMisc.Uint32); > - > - // > - // Check for the SMI_FLAG in IOMisc > - // > - if (IoMisc.Bits.SmiFlag == 0) { > - return EFI_NOT_FOUND; > - } > - > - // > - // Only support IN/OUT, but not INS/OUTS/REP INS/REP OUTS. > - // > - if ((mSmmCpuIoType[IoMisc.Bits.Type] != > EFI_SMM_SAVE_STATE_IO_TYPE_INPUT) && > - (mSmmCpuIoType[IoMisc.Bits.Type] != > EFI_SMM_SAVE_STATE_IO_TYPE_OUTPUT)) > - { > - return EFI_NOT_FOUND; > - } > - > - // > - // Compute index for the I/O Length and I/O Type lookup tables > - // > - if ((mSmmCpuIoWidth[IoMisc.Bits.Length].Width == 0) || > (mSmmCpuIoType[IoMisc.Bits.Type] == 0)) { > - return EFI_NOT_FOUND; > - } > - > - // > - // Make sure the incoming buffer is large enough to hold IoInfo before > accessing > - // > - if (Width < sizeof (EFI_SMM_SAVE_STATE_IO_INFO)) { > - return EFI_INVALID_PARAMETER; > - } > - > - // > - // Zero the IoInfo structure that will be returned in Buffer > - // > - IoInfo = (EFI_SMM_SAVE_STATE_IO_INFO *)Buffer; > - ZeroMem (IoInfo, sizeof (EFI_SMM_SAVE_STATE_IO_INFO)); > - > - // > - // Use lookup tables to help fill in all the fields of the IoInfo > structure > - // > - IoInfo->IoPort = (UINT16)IoMisc.Bits.Port; > - IoInfo->IoWidth = mSmmCpuIoWidth[IoMisc.Bits.Length].IoWidth; > - IoInfo->IoType = mSmmCpuIoType[IoMisc.Bits.Type]; > - ReadSaveStateRegister (CpuIndex, > EFI_SMM_SAVE_STATE_REGISTER_RAX, > mSmmCpuIoWidth[IoMisc.Bits.Length].Width, &IoInfo->IoData); > - return EFI_SUCCESS; > - } > - > - // > - // Convert Register to a register lookup table index > - // > - return ReadSaveStateRegisterByIndex (CpuIndex, GetRegisterIndex > (Register), Width, Buffer); -} > - > -/** > - Write value to a CPU Save State register on the target processor. > - > - This function abstracts the differences that whether the CPU Save State > register is in the > - IA32 CPU Save State Map or X64 CPU Save State Map. > - > - This function supports writing a CPU Save State register in SMBase > relocation handler. > - > - @param[in] CpuIndex Specifies the zero-based index of the CPU save > state. > - @param[in] RegisterIndex Index into mSmmCpuWidthOffset[] look up > table. > - @param[in] Width The number of bytes to read from the CPU save > state. > - @param[in] Buffer Upon entry, this holds the new CPU register > value. > - > - @retval EFI_SUCCESS The register was written to Save State. > - @retval EFI_NOT_FOUND The register is not defined for the Save > State > of Processor. > - @retval EFI_INVALID_PARAMETER ProcessorIndex or Width is not correct. > - > -**/ > -EFI_STATUS > -EFIAPI > -WriteSaveStateRegister ( > - IN UINTN CpuIndex, > - IN EFI_SMM_SAVE_STATE_REGISTER Register, > - IN UINTN Width, > - IN CONST VOID *Buffer > - ) > -{ > - UINTN RegisterIndex; > - SMRAM_SAVE_STATE_MAP *CpuSaveState; > - > - // > - // Writes to EFI_SMM_SAVE_STATE_REGISTER_LMA are ignored > - // > - if (Register == EFI_SMM_SAVE_STATE_REGISTER_LMA) { > - return EFI_SUCCESS; > - } > - > - // > - // Writes to EFI_SMM_SAVE_STATE_REGISTER_IO are not supported > - // > - if (Register == EFI_SMM_SAVE_STATE_REGISTER_IO) { > - return EFI_NOT_FOUND; > - } > - > - // > - // Convert Register to a register lookup table index > - // > - RegisterIndex = GetRegisterIndex (Register); > - if (RegisterIndex == 0) { > - return EFI_NOT_FOUND; > - } > - > - CpuSaveState = gSmst->CpuSaveState[CpuIndex]; > - > - // > - // Do not write non-writable SaveState, because it will cause exception. > - // > - if (!mSmmCpuWidthOffset[RegisterIndex].Writeable) { > - return EFI_UNSUPPORTED; > - } > - > - // > - // Check CPU mode > - // > - if (mSmmSaveStateRegisterLma == > EFI_SMM_SAVE_STATE_REGISTER_LMA_32BIT) { > - // > - // If 32-bit mode width is zero, then the specified register can not be > accessed > - // > - if (mSmmCpuWidthOffset[RegisterIndex].Width32 == 0) { > - return EFI_NOT_FOUND; > - } > - > - // > - // If Width is bigger than the 32-bit mode width, then the specified > register can not be accessed > - // > - if (Width > mSmmCpuWidthOffset[RegisterIndex].Width32) { > - return EFI_INVALID_PARAMETER; > - } > - > - // > - // Write SMM State register > - // > - ASSERT (CpuSaveState != NULL); > - CopyMem ((UINT8 *)CpuSaveState + > mSmmCpuWidthOffset[RegisterIndex].Offset32, Buffer, Width); > - } else { > - // > - // If 64-bit mode width is zero, then the specified register can not be > accessed > - // > - if (mSmmCpuWidthOffset[RegisterIndex].Width64 == 0) { > - return EFI_NOT_FOUND; > - } > - > - // > - // If Width is bigger than the 64-bit mode width, then the specified > register can not be accessed > - // > - if (Width > mSmmCpuWidthOffset[RegisterIndex].Width64) { > - return EFI_INVALID_PARAMETER; > - } > - > - // > - // Write at most 4 of the lower bytes of SMM State register > - // > - CopyMem ((UINT8 *)CpuSaveState + > mSmmCpuWidthOffset[RegisterIndex].Offset64Lo, Buffer, MIN (4, Width)); > - if (Width > 4) { > - // > - // Write at most 4 of the upper bytes of SMM State register > - // > - CopyMem ((UINT8 *)CpuSaveState + > mSmmCpuWidthOffset[RegisterIndex].Offset64Hi, (UINT8 *)Buffer + 4, > Width - 4); > - } > - } > - > - return EFI_SUCCESS; > -} > - > /** > Hook the code executed immediately after an RSM instruction on the > currently > executing CPU. The mode of code executed immediately after RSM must > be > -- > 2.25.1 > > > > > -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#102777): https://edk2.groups.io/g/devel/message/102777 Mute This Topic: https://groups.io/mt/98172957/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
