.nasm file has been added for X86 arch. .S assembly code is not required any more. https://bugzilla.tianocore.org/show_bug.cgi?id=1594
Cc: Eric Dong <eric.d...@intel.com> Cc: Ray Ni <ray...@intel.com> Cc: Laszlo Ersek <ler...@redhat.com> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Shenglei Zhang <shenglei.zh...@intel.com> --- .../Library/SmmCpuFeaturesLib/Ia32/SmiEntry.S | 278 ----------------- .../SmmCpuFeaturesLib/Ia32/SmiException.S | 174 ----------- .../SmmCpuFeaturesLibStm.inf | 6 - .../Library/SmmCpuFeaturesLib/X64/SmiEntry.S | 282 ------------------ .../SmmCpuFeaturesLib/X64/SmiException.S | 178 ----------- 5 files changed, 918 deletions(-) delete mode 100644 UefiCpuPkg/Library/SmmCpuFeaturesLib/Ia32/SmiEntry.S delete mode 100644 UefiCpuPkg/Library/SmmCpuFeaturesLib/Ia32/SmiException.S delete mode 100644 UefiCpuPkg/Library/SmmCpuFeaturesLib/X64/SmiEntry.S delete mode 100644 UefiCpuPkg/Library/SmmCpuFeaturesLib/X64/SmiException.S diff --git a/UefiCpuPkg/Library/SmmCpuFeaturesLib/Ia32/SmiEntry.S b/UefiCpuPkg/Library/SmmCpuFeaturesLib/Ia32/SmiEntry.S deleted file mode 100644 index 4c0f8c8933..0000000000 --- a/UefiCpuPkg/Library/SmmCpuFeaturesLib/Ia32/SmiEntry.S +++ /dev/null @@ -1,278 +0,0 @@ -#------------------------------------------------------------------------------ -# -# Copyright (c) 2009 - 2016, Intel Corporation. All rights reserved.<BR> -# 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 -# http://opensource.org/licenses/bsd-license.php. -# -# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, -# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. -# -# Module Name: -# -# SmiEntry.S -# -# Abstract: -# -# Code template of the SMI handler for a particular processor -# -#------------------------------------------------------------------------------ - -ASM_GLOBAL ASM_PFX(gcStmSmiHandlerTemplate) -ASM_GLOBAL ASM_PFX(gcStmSmiHandlerSize) -ASM_GLOBAL ASM_PFX(gcStmSmiHandlerOffset) -ASM_GLOBAL ASM_PFX(gStmSmiCr3) -ASM_GLOBAL ASM_PFX(gStmSmiStack) -ASM_GLOBAL ASM_PFX(gStmSmbase) -ASM_GLOBAL ASM_PFX(gStmXdSupported) -ASM_GLOBAL ASM_PFX(FeaturePcdGet (PcdCpuSmmStackGuard)) -ASM_GLOBAL ASM_PFX(gStmSmiHandlerIdtr) - -.equ MSR_IA32_MISC_ENABLE, 0x1A0 -.equ MSR_EFER, 0xc0000080 -.equ MSR_EFER_XD, 0x800 - -# -# Constants relating to TXT_PROCESSOR_SMM_DESCRIPTOR -# -.equ DSC_OFFSET, 0xfb00 -.equ DSC_GDTPTR, 0x48 -.equ DSC_GDTSIZ, 0x50 -.equ DSC_CS, 0x14 -.equ DSC_DS, 0x16 -.equ DSC_SS, 0x18 -.equ DSC_OTHERSEG, 0x1A - -.equ PROTECT_MODE_CS, 0x08 -.equ PROTECT_MODE_DS, 0x20 -.equ TSS_SEGMENT, 0x40 - - .text -ASM_PFX(gcStmSmiHandlerTemplate): - -_StmSmiEntryPoint: - .byte 0xbb # mov bx, imm16 - .word _StmGdtDesc - _StmSmiEntryPoint + 0x8000 - .byte 0x2e,0xa1 # mov ax, cs:[offset16] - .word DSC_OFFSET + DSC_GDTSIZ - decl %eax - movl %eax, %cs:(%edi) # mov cs:[bx], ax - .byte 0x66,0x2e,0xa1 # mov eax, cs:[offset16] - .word DSC_OFFSET + DSC_GDTPTR - movw %ax, %cs:2(%edi) - movw %ax, %bp # ebp = GDT base - .byte 0x66 - lgdt %cs:(%edi) -# Patch ProtectedMode Segment - .byte 0xb8 # mov ax, imm16 - .word PROTECT_MODE_CS # set AX for segment directly - movl %eax, %cs:-2(%edi) # mov cs:[bx - 2], ax -# Patch ProtectedMode entry - .byte 0x66, 0xbf # mov edi, SMBASE -ASM_PFX(gStmSmbase): .space 4 - .byte 0x67 - lea ((Start32bit - _StmSmiEntryPoint) + 0x8000)(%edi), %ax - movw %ax, %cs:-6(%edi) - movl %cr0, %ebx - .byte 0x66 - andl $0x9ffafff3, %ebx - .byte 0x66 - orl $0x23, %ebx - movl %ebx, %cr0 - .byte 0x66,0xea - .space 4 - .space 2 -_StmGdtDesc: .space 4 - .space 2 - -Start32bit: - movw $PROTECT_MODE_DS, %ax - movl %eax,%ds - movl %eax,%es - movl %eax,%fs - movl %eax,%gs - movl %eax,%ss - .byte 0xbc # mov esp, imm32 -ASM_PFX(gStmSmiStack): .space 4 - movl $ASM_PFX(gStmSmiHandlerIdtr), %eax - lidt (%eax) - jmp ProtFlatMode - -ProtFlatMode: - .byte 0xb8 # mov eax, imm32 -ASM_PFX(gStmSmiCr3): .space 4 - movl %eax, %cr3 -# -# Need to test for CR4 specific bit support -# - movl $1, %eax - cpuid # use CPUID to determine if specific CR4 bits are supported - xorl %eax, %eax # Clear EAX - testl $BIT2, %edx # Check for DE capabilities - jz L8 - orl $BIT3, %eax -L8: - testl $BIT6, %edx # Check for PAE capabilities - jz L9 - orl $BIT5, %eax -L9: - testl $BIT7, %edx # Check for MCE capabilities - jz L10 - orl $BIT6, %eax -L10: - testl $BIT24, %edx # Check for FXSR capabilities - jz L11 - orl $BIT9, %eax -L11: - testl $BIT25, %edx # Check for SSE capabilities - jz L12 - orl $BIT10, %eax -L12: # as cr4.PGE is not set here, refresh cr3 - movl %eax, %cr4 # in PreModifyMtrrs() to flush TLB. - - cmpb $0, ASM_PFX(FeaturePcdGet (PcdCpuSmmStackGuard)) - jz L5 -# Load TSS - movb $0x89, (TSS_SEGMENT + 5)(%ebp) # clear busy flag - movl $TSS_SEGMENT, %eax - ltrw %ax -L5: - -# enable NXE if supported - .byte 0xb0 # mov al, imm8 -ASM_PFX(gStmXdSupported): .byte 1 - cmpb $0, %al - jz SkipXd -# -# Check XD disable bit -# - movl $MSR_IA32_MISC_ENABLE, %ecx - rdmsr - pushl %edx # save MSR_IA32_MISC_ENABLE[63-32] - testl $BIT2, %edx # MSR_IA32_MISC_ENABLE[34] - jz L13 - andw $0x0FFFB, %dx # clear XD Disable bit if it is set - wrmsr -L13: - movl $MSR_EFER, %ecx - rdmsr - orw $MSR_EFER_XD,%ax # enable NXE - wrmsr - jmp XdDone -SkipXd: - subl $4, %esp -XdDone: - - movl %cr0, %ebx - orl $0x080010023, %ebx # enable paging + WP + NE + MP + PE - movl %ebx, %cr0 - leal DSC_OFFSET(%edi),%ebx - movw DSC_DS(%ebx),%ax - movl %eax, %ds - movw DSC_OTHERSEG(%ebx),%ax - movl %eax, %es - movl %eax, %fs - movl %eax, %gs - movw DSC_SS(%ebx),%ax - movl %eax, %ss - -CommonHandler: - movl 4(%esp), %ebx - - pushl %ebx - movl $ASM_PFX(CpuSmmDebugEntry), %eax - call *%eax - addl $4, %esp - - pushl %ebx - movl $ASM_PFX(SmiRendezvous), %eax - call *%eax - addl $4, %esp - - pushl %ebx - movl $ASM_PFX(CpuSmmDebugExit), %eax - call *%eax - addl $4, %esp - - movl $ASM_PFX(gStmXdSupported), %eax - movb (%eax), %al - cmpb $0, %al - jz L16 - popl %edx # get saved MSR_IA32_MISC_ENABLE[63-32] - testl $BIT2, %edx - jz L16 - movl $MSR_IA32_MISC_ENABLE, %ecx - rdmsr - orw $BIT2, %dx # set XD Disable bit if it was set before entering into SMM - wrmsr - -L16: - rsm - -_StmSmiHandler: -# -# Check XD disable bit -# - xorl %esi, %esi - movl $ASM_PFX(gStmXdSupported), %eax - movb (%eax), %al - cmpb $0, %al - jz StmXdDone - movl $MSR_IA32_MISC_ENABLE, %ecx - rdmsr - movl %edx, %esi # save MSR_IA32_MISC_ENABLE[63-32] - testl $BIT2, %edx # MSR_IA32_MISC_ENABLE[34] - jz L14 - andw $0x0FFFB, %dx # clear XD Disable bit if it is set - wrmsr -L14: - movl $MSR_EFER, %ecx - rdmsr - orw $MSR_EFER_XD,%ax # enable NXE - wrmsr -StmXdDone: - push %esi - - # below step is needed, because STM does not run above code. - # we have to run below code to set IDT/CR0/CR4 - movl $ASM_PFX(gStmSmiHandlerIdtr), %eax - lidt (%eax) - - movl %cr0, %eax - orl $0x80010023, %eax # enable paging + WP + NE + MP + PE - movl %eax, %cr0 -# -# Need to test for CR4 specific bit support -# - movl $1, %eax - cpuid # use CPUID to determine if specific CR4 bits are supported - movl %cr4, %eax # init EAX - testl $BIT2, %edx # Check for DE capabilities - jz L28 - orl $BIT3, %eax -L28: - testl $BIT6, %edx # Check for PAE capabilities - jz L29 - orl $BIT5, %eax -L29: - testl $BIT7, %edx # Check for MCE capabilities - jz L30 - orl $BIT6, %eax -L30: - testl $BIT24, %edx # Check for FXSR capabilities - jz L31 - orl $BIT9, %eax -L31: - testl $BIT25, %edx # Check for SSE capabilities - jz L32 - orl $BIT10, %eax -L32: # as cr4.PGE is not set here, refresh cr3 - movl %eax, %cr4 # in PreModifyMtrrs() to flush TLB. - # STM init finish - jmp CommonHandler - - -ASM_PFX(gcStmSmiHandlerSize) : .word . - _StmSmiEntryPoint -ASM_PFX(gcStmSmiHandlerOffset): .word _StmSmiHandler - _StmSmiEntryPoint - diff --git a/UefiCpuPkg/Library/SmmCpuFeaturesLib/Ia32/SmiException.S b/UefiCpuPkg/Library/SmmCpuFeaturesLib/Ia32/SmiException.S deleted file mode 100644 index 7d0057af80..0000000000 --- a/UefiCpuPkg/Library/SmmCpuFeaturesLib/Ia32/SmiException.S +++ /dev/null @@ -1,174 +0,0 @@ -#------------------------------------------------------------------------------ -# -# Copyright (c) 2009 - 2016, Intel Corporation. All rights reserved.<BR> -# 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 -# http://opensource.org/licenses/bsd-license.php. -# -# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, -# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. -# -# Module Name: -# -# SmiException.S -# -# Abstract: -# -# Exception handlers used in SM mode -# -#------------------------------------------------------------------------------ - -ASM_GLOBAL ASM_PFX(gcStmPsd) - -ASM_GLOBAL ASM_PFX(SmmStmExceptionHandler) -ASM_GLOBAL ASM_PFX(SmmStmSetup) -ASM_GLOBAL ASM_PFX(SmmStmTeardown) - -.equ MSR_IA32_MISC_ENABLE, 0x1A0 -.equ MSR_EFER, 0xc0000080 -.equ MSR_EFER_XD, 0x800 - -.equ CODE_SEL, 0x08 -.equ DATA_SEL, 0x20 -.equ TSS_SEL, 0x40 - - .data - -ASM_PFX(gcStmPsd): - .ascii "TXTPSSIG" - .word PSD_SIZE - .word 1 # Version - .long 0 # LocalApicId - .byte 0x5 # Cr4Pse;Cr4Pae;Intel64Mode;ExecutionDisableOutsideSmrr - .byte 0 # BIOS to STM - .byte 0 # STM to BIOS - .byte 0 - .word CODE_SEL - .word DATA_SEL - .word DATA_SEL - .word DATA_SEL - .word TSS_SEL - .word 0 - .quad 0 # SmmCr3 - .long ASM_PFX(_OnStmSetup) - .long 0 - .long ASM_PFX(_OnStmTeardown) - .long 0 - .quad 0 # SmmSmiHandlerRip - SMM guest entrypoint - .quad 0 # SmmSmiHandlerRsp - .quad 0 - .long 0 - .long 0x80010100 # RequiredStmSmmRevId - .long ASM_PFX(_OnException) - .long 0 - .quad 0 # ExceptionStack - .word DATA_SEL - .word 0x1F # ExceptionFilter - .long 0 - .quad 0 - .quad 0 # BiosHwResourceRequirementsPtr - .quad 0 # AcpiRsdp - .byte 0 # PhysicalAddressBits -.equ PSD_SIZE, . - ASM_PFX(gcStmPsd) - - .text - -#------------------------------------------------------------------------------ -# SMM Exception handlers -#------------------------------------------------------------------------------ -ASM_GLOBAL ASM_PFX(_OnException) -ASM_PFX(_OnException): - movl %esp, %ecx - pushl %ecx - call ASM_PFX(SmmStmExceptionHandler) - addl $4, %esp - - movl %eax, %ebx - movl $4, %eax - .byte 0xf, 0x1, 0xc1 # VMCALL - jmp . - -ASM_GLOBAL ASM_PFX(_OnStmSetup) -ASM_PFX(_OnStmSetup): -# -# Check XD disable bit -# - xorl %esi, %esi - movl $ASM_PFX(gStmXdSupported), %eax - movb (%eax), %al - cmpb $0, %al - jz StmXdDone1 - movl $MSR_IA32_MISC_ENABLE, %ecx - rdmsr - movl %edx, %esi # save MSR_IA32_MISC_ENABLE[63-32] - testl $BIT2, %edx # MSR_IA32_MISC_ENABLE[34] - jz L13 - andw $0x0FFFB, %dx # clear XD Disable bit if it is set - wrmsr -L13: - movl $MSR_EFER, %ecx - rdmsr - orw $MSR_EFER_XD,%ax # enable NXE - wrmsr -StmXdDone1: - push %esi - - call ASM_PFX(SmmStmSetup) - - movl $ASM_PFX(gStmXdSupported), %eax - movb (%eax), %al - cmpb $0, %al - jz L14 - popl %edx # get saved MSR_IA32_MISC_ENABLE[63-32] - testl $BIT2, %edx - jz L14 - movl $MSR_IA32_MISC_ENABLE, %ecx - rdmsr - orw $BIT2, %dx # set XD Disable bit if it was set before entering into SMM - wrmsr -L14: - - rsm - -ASM_GLOBAL ASM_PFX(_OnStmTeardown) -ASM_PFX(_OnStmTeardown): -# -# Check XD disable bit -# - xorl %esi, %esi - movl $ASM_PFX(gStmXdSupported), %eax - movb (%eax), %al - cmpb $0, %al - jz StmXdDone2 - movl $MSR_IA32_MISC_ENABLE, %ecx - rdmsr - movl %edx, %esi # save MSR_IA32_MISC_ENABLE[63-32] - testl $BIT2, %edx # MSR_IA32_MISC_ENABLE[34] - jz L15 - andw $0x0FFFB, %dx # clear XD Disable bit if it is set - wrmsr -L15: - movl $MSR_EFER, %ecx - rdmsr - orw $MSR_EFER_XD,%ax # enable NXE - wrmsr -StmXdDone2: - push %esi - - call ASM_PFX(SmmStmTeardown) - - movl $ASM_PFX(gStmXdSupported), %eax - movb (%eax), %al - cmpb $0, %al - jz L16 - popl %edx # get saved MSR_IA32_MISC_ENABLE[63-32] - testl $BIT2, %edx - jz L16 - movl $MSR_IA32_MISC_ENABLE, %ecx - rdmsr - orw $BIT2, %dx # set XD Disable bit if it was set before entering into SMM - wrmsr -L16: - - rsm diff --git a/UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLibStm.inf b/UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLibStm.inf index c700644427..7fd0cc5d04 100644 --- a/UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLibStm.inf +++ b/UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLibStm.inf @@ -35,9 +35,6 @@ Ia32/SmiEntry.nasm Ia32/SmiException.nasm - Ia32/SmiEntry.S - Ia32/SmiException.S - [Sources.X64] X64/SmmStmSupport.c @@ -45,9 +42,6 @@ X64/SmiEntry.nasm X64/SmiException.nasm - X64/SmiEntry.S - X64/SmiException.S - [Packages] MdePkg/MdePkg.dec MdeModulePkg/MdeModulePkg.dec diff --git a/UefiCpuPkg/Library/SmmCpuFeaturesLib/X64/SmiEntry.S b/UefiCpuPkg/Library/SmmCpuFeaturesLib/X64/SmiEntry.S deleted file mode 100644 index 1f9f91ce10..0000000000 --- a/UefiCpuPkg/Library/SmmCpuFeaturesLib/X64/SmiEntry.S +++ /dev/null @@ -1,282 +0,0 @@ -#------------------------------------------------------------------------------ -# -# Copyright (c) 2009 - 2016, Intel Corporation. All rights reserved.<BR> -# 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 -# http://opensource.org/licenses/bsd-license.php. -# -# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, -# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. -# -# Module Name: -# -# SmiEntry.S -# -# Abstract: -# -# Code template of the SMI handler for a particular processor -# -#------------------------------------------------------------------------------ - -ASM_GLOBAL ASM_PFX(gcStmSmiHandlerTemplate) -ASM_GLOBAL ASM_PFX(gcStmSmiHandlerSize) -ASM_GLOBAL ASM_PFX(gcStmSmiHandlerOffset) -ASM_GLOBAL ASM_PFX(gStmSmiCr3) -ASM_GLOBAL ASM_PFX(gStmSmiStack) -ASM_GLOBAL ASM_PFX(gStmSmbase) -ASM_GLOBAL ASM_PFX(gStmXdSupported) -ASM_GLOBAL ASM_PFX(gStmSmiHandlerIdtr) - -.equ MSR_IA32_MISC_ENABLE, 0x1A0 -.equ MSR_EFER, 0xc0000080 -.equ MSR_EFER_XD, 0x800 - -# -# Constants relating to TXT_PROCESSOR_SMM_DESCRIPTOR -# -.equ DSC_OFFSET, 0xfb00 -.equ DSC_GDTPTR, 0x48 -.equ DSC_GDTSIZ, 0x50 -.equ DSC_CS, 0x14 -.equ DSC_DS, 0x16 -.equ DSC_SS, 0x18 -.equ DSC_OTHERSEG, 0x1a -# -# Constants relating to CPU State Save Area -# -.equ SSM_DR6, 0xffd0 -.equ SSM_DR7, 0xffc8 - -.equ PROTECT_MODE_CS, 0x08 -.equ PROTECT_MODE_DS, 0x20 -.equ LONG_MODE_CS, 0x38 -.equ TSS_SEGMENT, 0x40 -.equ GDT_SIZE, 0x50 - - .text - -ASM_PFX(gcStmSmiHandlerTemplate): - -_StmSmiEntryPoint: - # - # The encoding of BX in 16-bit addressing mode is the same as of RDI in 64- - # bit addressing mode. And that coincidence has been used in the following - # "64-bit like" 16-bit code. Be aware that once RDI is referenced as a - # base address register, it is actually BX that is referenced. - # - .byte 0xbb # mov bx, imm16 - .word _StmGdtDesc - _StmSmiEntryPoint + 0x8000 - # - # fix GDT descriptor - # - .byte 0x2e,0xa1 # mov ax, cs:[offset16] - .word DSC_OFFSET + DSC_GDTSIZ - .byte 0x48 # dec ax - .byte 0x2e - movl %eax, (%rdi) # mov cs:[bx], ax - .byte 0x66,0x2e,0xa1 # mov eax, cs:[offset16] - .word DSC_OFFSET + DSC_GDTPTR - .byte 0x2e - movw %ax, 2(%rdi) - .byte 0x66,0x2e - lgdt (%rdi) - # - # Patch ProtectedMode Segment - # - .byte 0xb8 - .word PROTECT_MODE_CS - .byte 0x2e - movl %eax, -2(%rdi) - # - # Patch ProtectedMode entry - # - .byte 0x66, 0xbf # mov edi, SMBASE -ASM_PFX(gStmSmbase): .space 4 - lea ((ProtectedMode - _StmSmiEntryPoint) + 0x8000)(%edi), %ax - .byte 0x2e - movw %ax, -6(%rdi) - # - # Switch into ProtectedMode - # - movq %cr0, %rbx - .byte 0x66 - andl $0x9ffafff3, %ebx - .byte 0x66 - orl $0x00000023, %ebx - - movq %rbx, %cr0 - .byte 0x66, 0xea - .space 6 - -_StmGdtDesc: .space 6 - -ProtectedMode: - movw $PROTECT_MODE_DS, %ax - movl %eax, %ds - movl %eax, %es - movl %eax, %fs - movl %eax, %gs - movl %eax, %ss - .byte 0xbc # mov esp, imm32 -ASM_PFX(gStmSmiStack): .space 4 - jmp ProtFlatMode - -ProtFlatMode: - .byte 0xb8 -ASM_PFX(gStmSmiCr3): .space 4 - movq %rax, %cr3 - movl $0x668,%eax # as cr4.PGE is not set here, refresh cr3 - movq %rax, %cr4 # in PreModifyMtrrs() to flush TLB. -# Load TSS - subl $8, %esp # reserve room in stack - sgdt (%rsp) - movl 2(%rsp), %eax # eax = GDT base - addl $8, %esp - movb $0x89, %dl - movb %dl, (TSS_SEGMENT + 5)(%rax) # clear busy flag - movl $TSS_SEGMENT, %eax - ltr %ax - -# enable NXE if supported - .byte 0xb0 # mov al, imm8 -ASM_PFX(gStmXdSupported): .byte 1 - cmpb $0, %al - jz SkipXd -# -# Check XD disable bit -# - movl $MSR_IA32_MISC_ENABLE, %ecx - rdmsr - subl $4, %esp - pushq %rdx # save MSR_IA32_MISC_ENABLE[63-32] - testl $BIT2, %edx # MSR_IA32_MISC_ENABLE[34] - jz L13 - andw $0x0FFFB, %dx # clear XD Disable bit if it is set - wrmsr -L13: - movl $MSR_EFER, %ecx - rdmsr - orw $MSR_EFER_XD,%ax # enable NXE - wrmsr - jmp XdDone -SkipXd: - subl $8, %esp -XdDone: - - # - # Switch to LongMode - # - pushq $LONG_MODE_CS # push cs hardcore here - call Base # push return address for retf later -Base: - addl $(LongMode - Base), (%rsp) # offset for far retf, seg is the 1st arg - - movl $MSR_EFER, %ecx - rdmsr - orb $1,%ah # enable LME - wrmsr - movq %cr0, %rbx - orl $0x080010023, %ebx # enable paging + WP + NE + MP + PE - movq %rbx, %cr0 - retf -LongMode: # long mode (64-bit code) starts here - movabsq $ASM_PFX(gStmSmiHandlerIdtr), %rax - lidt (%rax) - lea (DSC_OFFSET)(%rdi), %ebx - movw DSC_DS(%rbx), %ax - movl %eax,%ds - movw DSC_OTHERSEG(%rbx), %ax - movl %eax,%es - movl %eax,%fs - movl %eax,%gs - movw DSC_SS(%rbx), %ax - movl %eax,%ss - -CommonHandler: - movq 8(%rsp), %rbx - # Save FP registers - - subq $0x200, %rsp - .byte 0x48 # FXSAVE64 - fxsave (%rsp) - - addq $-0x20, %rsp - - movq %rbx, %rcx - movabsq $ASM_PFX(CpuSmmDebugEntry), %rax - call *%rax - - movq %rbx, %rcx - movabsq $ASM_PFX(SmiRendezvous), %rax - call *%rax - - movq %rbx, %rcx - movabsq $ASM_PFX(CpuSmmDebugExit), %rax - call *%rax - - addq $0x20, %rsp - - # - # Restore FP registers - # - .byte 0x48 # FXRSTOR64 - fxrstor (%rsp) - - addq $0x200, %rsp - - movabsq $ASM_PFX(gStmXdSupported), %rax - movb (%rax), %al - cmpb $0, %al - jz L16 - popq %rdx # get saved MSR_IA32_MISC_ENABLE[63-32] - testl $BIT2, %edx - jz L16 - movl $MSR_IA32_MISC_ENABLE, %ecx - rdmsr - orw $BIT2, %dx # set XD Disable bit if it was set before entering into SMM - wrmsr - -L16: - rsm - -_StmSmiHandler: -# -# Check XD disable bit -# - xorq %r8, %r8 - movabsq $ASM_PFX(gStmXdSupported), %rax - movb (%rax), %al - cmpb $0, %al - jz StmXdDone - movl $MSR_IA32_MISC_ENABLE, %ecx - rdmsr - movq %rdx, %r8 # save MSR_IA32_MISC_ENABLE[63-32] - testl $BIT2, %edx # MSR_IA32_MISC_ENABLE[34] - jz L14 - andw $0x0FFFB, %dx # clear XD Disable bit if it is set - wrmsr -L14: - movl $MSR_EFER, %ecx - rdmsr - orw $MSR_EFER_XD,%ax # enable NXE - wrmsr -StmXdDone: - pushq %r8 - - # below step is needed, because STM does not run above code. - # we have to run below code to set IDT/CR0/CR4 - movabsq $ASM_PFX(gStmSmiHandlerIdtr), %rax - lidt (%rax) - - movq %cr0, %rax - orl $0x80010023, %eax - movq %rax, %cr0 - movq %cr4, %rax - movl $0x668, %eax # as cr4.PGE is not set here, refresh cr3 - movq %rax, %cr4 # in PreModifyMtrrs() to flush TLB. - # STM init finish - jmp CommonHandler - -ASM_PFX(gcStmSmiHandlerSize) : .word . - _StmSmiEntryPoint -ASM_PFX(gcStmSmiHandlerOffset): .word _StmSmiHandler - _StmSmiEntryPoint diff --git a/UefiCpuPkg/Library/SmmCpuFeaturesLib/X64/SmiException.S b/UefiCpuPkg/Library/SmmCpuFeaturesLib/X64/SmiException.S deleted file mode 100644 index 4d0cd9ac6f..0000000000 --- a/UefiCpuPkg/Library/SmmCpuFeaturesLib/X64/SmiException.S +++ /dev/null @@ -1,178 +0,0 @@ -#------------------------------------------------------------------------------ -# -# Copyright (c) 2009 - 2016, Intel Corporation. All rights reserved.<BR> -# 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 -# http://opensource.org/licenses/bsd-license.php. -# -# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, -# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. -# -# Module Name: -# -# SmiException.S -# -# Abstract: -# -# Exception handlers used in SM mode -# -#------------------------------------------------------------------------------ - -ASM_GLOBAL ASM_PFX(gcStmPsd) - -ASM_GLOBAL ASM_PFX(SmmStmExceptionHandler) -ASM_GLOBAL ASM_PFX(SmmStmSetup) -ASM_GLOBAL ASM_PFX(SmmStmTeardown) - -.equ CODE_SEL, 0x38 -.equ DATA_SEL, 0x20 -.equ TR_SEL, 0x40 - -.equ MSR_IA32_MISC_ENABLE, 0x1A0 -.equ MSR_EFER, 0x0c0000080 -.equ MSR_EFER_XD, 0x0800 - - .data - -# -# This structure serves as a template for all processors. -# -ASM_PFX(gcStmPsd): - .ascii "TXTPSSIG" - .word PSD_SIZE - .word 1 # Version - .long 0 # LocalApicId - .byte 0xF # Cr4Pse;Cr4Pae;Intel64Mode;ExecutionDisableOutsideSmrr - .byte 0 # BIOS to STM - .byte 0 # STM to BIOS - .byte 0 - .word CODE_SEL - .word DATA_SEL - .word DATA_SEL - .word DATA_SEL - .word TR_SEL - .word 0 - .quad 0 # SmmCr3 - .quad ASM_PFX(_OnStmSetup) - .quad ASM_PFX(_OnStmTeardown) - .quad 0 # SmmSmiHandlerRip - SMM guest entrypoint - .quad 0 # SmmSmiHandlerRsp - .quad 0 - .long 0 - .long 0x80010100 # RequiredStmSmmRevId - .quad ASM_PFX(_OnException) - .quad 0 # ExceptionStack - .word DATA_SEL - .word 0x1F # ExceptionFilter - .long 0 - .quad 0 - .quad 0 # BiosHwResourceRequirementsPtr - .quad 0 # AcpiRsdp - .byte 0 # PhysicalAddressBits -.equ PSD_SIZE, . - ASM_PFX(gcStmPsd) - - .text -#------------------------------------------------------------------------------ -# SMM Exception handlers -#------------------------------------------------------------------------------ - -ASM_GLOBAL ASM_PFX(_OnException) -ASM_PFX(_OnException): - movq %rsp, %rcx - subq $0x28, %rsp - call ASM_PFX(SmmStmExceptionHandler) - addq $0x28, %rsp - movl %eax, %ebx - movl $4, %eax - .byte 0xf, 0x1, 0xc1 # VMCALL - jmp . - -ASM_GLOBAL ASM_PFX(_OnStmSetup) -ASM_PFX(_OnStmSetup): -# -# Check XD disable bit -# - xorq %r8, %r8 - movabsq $ASM_PFX(gStmXdSupported), %rax - movb (%rax), %al - cmpb $0, %al - jz StmXdDone1 - movl $MSR_IA32_MISC_ENABLE, %ecx - rdmsr - movq %rdx, %r8 # save MSR_IA32_MISC_ENABLE[63-32] - testl $BIT2, %edx # MSR_IA32_MISC_ENABLE[34] - jz L13 - andw $0x0FFFB, %dx # clear XD Disable bit if it is set - wrmsr -L13: - movl $MSR_EFER, %ecx - rdmsr - orw $MSR_EFER_XD,%ax # enable NXE - wrmsr -StmXdDone1: - pushq %r8 - - subq $0x20, %rsp - call ASM_PFX(SmmStmSetup) - addq 0x20, %rsp - - movabsq $ASM_PFX(gStmXdSupported), %rax - movb (%rax), %al - cmpb $0, %al - jz L14 - popq %rdx # get saved MSR_IA32_MISC_ENABLE[63-32] - testl $BIT2, %edx - jz L14 - movl $MSR_IA32_MISC_ENABLE, %ecx - rdmsr - orw $BIT2, %dx # set XD Disable bit if it was set before entering into SMM - wrmsr -L14: - - rsm - -ASM_GLOBAL ASM_PFX(_OnStmTeardown) -ASM_PFX(_OnStmTeardown): -# -# Check XD disable bit -# - xorq %r8, %r8 - movabsq $ASM_PFX(gStmXdSupported), %rax - movb (%rax), %al - cmpb $0, %al - jz StmXdDone2 - movl $MSR_IA32_MISC_ENABLE, %ecx - rdmsr - movq %rdx, %r8 # save MSR_IA32_MISC_ENABLE[63-32] - testl $BIT2, %edx # MSR_IA32_MISC_ENABLE[34] - jz L15 - andw $0x0FFFB, %dx # clear XD Disable bit if it is set - wrmsr -L15: - movl $MSR_EFER, %ecx - rdmsr - orw $MSR_EFER_XD,%ax # enable NXE - wrmsr -StmXdDone2: - pushq %r8 - - subq $0x20, %rsp - call ASM_PFX(SmmStmTeardown) - addq $0x20, %rsp - - movabsq $ASM_PFX(gStmXdSupported), %rax - movb (%rax), %al - cmpb $0, %al - jz L16 - popq %rdx # get saved MSR_IA32_MISC_ENABLE[63-32] - testl $BIT2, %edx - jz L16 - movl $MSR_IA32_MISC_ENABLE, %ecx - rdmsr - orw $BIT2, %dx # set XD Disable bit if it was set before entering into SMM - wrmsr -L16: - - rsm - -- 2.18.0.windows.1 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel
