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UefiCpuPkg/CpuMpPei/X64: Use CodeSegment and DataSegment fields

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Using CodeSegment and DataSegment fields in ExchangeInfo instead of the hardcode
MACROs for x64 arch. Switch AP from real mode to long mode directly, so needn't
the CS/DS of protected mode.

Cc: Feng Tian <feng.tian@intel.com>
Cc: Michael Kinney <michael.d.kinney@intel.com>
Cc: Giri Mudusuru <giri.p.mudusuru@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Giri P Mudusuru <giri.p.mudusuru@intel.com>
This commit is contained in:
Jeff Fan 2016-07-11 19:40:05 +08:00
parent 249ed12ea0
commit d1471c0112
2 changed files with 70 additions and 92 deletions
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69
UefiCpuPkg/CpuMpPei/X64/MpFuncs.asm
View File

@ -1,5 +1,5 @@
;------------------------------------------------------------------------------ ; ;------------------------------------------------------------------------------ ;
; Copyright (c) 2015, Intel Corporation. All rights reserved.<BR> ; Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>
; This program and the accompanying materials ; This program and the accompanying materials
; are licensed and made available under the terms and conditions of the BSD License ; 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 ; which accompanies this distribution. The full text of the license may be found at
@ -47,25 +47,18 @@ RendezvousFunnelProcStart::
dw BufferStartLocation ; mov si, BufferStartLocation dw BufferStartLocation ; mov si, BufferStartLocation
db 66h, 8Bh, 1Ch ; mov ebx, dword ptr [si] db 66h, 8Bh, 1Ch ; mov ebx, dword ptr [si]
db 0BFh ; opcode of mov di, mem16
dw PmodeOffsetLocation ; mov di, PmodeOffsetLocation
db 66h, 8Bh, 05h ; mov eax,dword ptr [di]
db 8Bh, 0F8h ; mov di, ax
db 83h, 0EFh,06h ; sub di, 06h
db 66h, 03h, 0C3h ; add eax, ebx
db 66h, 89h, 05h ; mov dword ptr [di],eax
db 0BFh ; opcode of mov di, mem16 db 0BFh ; opcode of mov di, mem16
dw LmodeOffsetLocation ; mov di, LmodeOffsetLocation dw LmodeOffsetLocation ; mov di, LmodeOffsetLocation
db 66h, 8Bh, 05h ; mov eax,dword ptr [di] db 66h, 8Bh, 05h ; mov eax, [di]
db 8Bh, 0F8h ; mov di, ax db 0BFh ; opcode of mov di, mem16
db 83h, 0EFh,06h ; sub di, 06h dw CodeSegmentLocation ; mov di, CodeSegmentLocation
db 66h, 03h, 0C3h ; add eax, ebx db 66h, 8Bh, 15h ; mov edx, [di]
db 66h, 89h, 05h ; mov dword ptr [di],eax db 89h, 0C7h ; mov di, ax
db 83h, 0EFh, 02h ; sub di, 02h
db 0BEh db 89h, 15h ; mov [di], dx ; Patch long mode CS
dw Cr3Location ; mov si, Cr3Location db 83h, 0EFh, 04h ; sub di, 04h
db 66h, 8Bh, 0Ch ; mov ecx,dword ptr [si] ; ECX is keeping the value of CR3 db 66h, 01h, 0D8h ; add eax, ebx
db 66h, 89h, 05h ; mov [di], eax ; Patch address
db 0BEh ; opcode of mov si, mem16 db 0BEh ; opcode of mov si, mem16
dw GdtrLocation ; mov si, GdtrLocation dw GdtrLocation ; mov si, GdtrLocation
@ -77,48 +70,44 @@ RendezvousFunnelProcStart::
db 66h ; db 66h db 66h ; db 66h
db 2Eh,0Fh, 01h, 1Ch ; lidt fword ptr cs:[si] db 2Eh,0Fh, 01h, 1Ch ; lidt fword ptr cs:[si]
db 33h, 0C0h ; xor ax, ax db 0BFh ; opcode of mov di, mem16
db 8Eh, 0D8h ; mov ds, ax dw DataSegmentLocation ; mov di, DataSegmentLocation
db 66h, 8Bh, 3Dh ; mov edi, [di] ; Save long mode DS in edi
db 0BEh
dw Cr3Location ; mov si, Cr3Location
db 66h, 8Bh, 0Ch ; mov ecx, dword ptr [si] ; ECX is keeping the value of CR3
db 31h, 0C0h ; xor ax, ax
db 8Eh, 0D8h ; mov ds, ax ; Clear data segment
db 0Fh, 20h, 0C0h ; mov eax, cr0 ; Get control register 0 db 0Fh, 20h, 0C0h ; mov eax, cr0 ; Get control register 0
db 66h, 83h, 0C8h, 03h ; or eax, 000000003h ; Set PE bit (bit #0) & MP db 66h, 83h, 0C8h, 03h ; or eax, 000000003h ; Set PE bit (bit #0) & MP
db 0Fh, 22h, 0C0h ; mov cr0, eax db 0Fh, 22h, 0C0h ; mov cr0, eax
db 66h, 67h, 0EAh ; far jump
dd 0h ; 32-bit offset
dw PROTECT_MODE_CS ; 16-bit selector
Flat32Start:: ; protected mode entry point
mov ax, PROTECT_MODE_DS
mov ds, ax
mov es, ax
mov fs, ax
mov gs, ax
mov ss, ax
db 0Fh, 20h, 0E0h ; mov eax, cr4 db 0Fh, 20h, 0E0h ; mov eax, cr4
db 0Fh, 0BAh, 0E8h, 05h ; bts eax, 5 db 66h, 0Fh, 0BAh, 0E8h, 05h ; bts eax, 5
db 0Fh, 22h, 0E0h ; mov cr4, eax db 0Fh, 22h, 0E0h ; mov cr4, eax
db 0Fh, 22h, 0D9h ; mov cr3, ecx db 0Fh, 22h, 0D9h ; mov cr3, ecx
db 0B9h db 66h, 0B9h
dd 0C0000080h ; mov ecx, 0c0000080h ; EFER MSR number. dd 0C0000080h ; mov ecx, 0c0000080h ; EFER MSR number.
db 0Fh, 32h ; rdmsr ; Read EFER. db 0Fh, 32h ; rdmsr ; Read EFER.
db 0Fh, 0BAh, 0E8h, 08h ; bts eax, 8 ; Set LME=1. db 66h, 0Fh, 0BAh, 0E8h, 08h; bts eax, 8 ; Set LME=1.
db 0Fh, 30h ; wrmsr ; Write EFER. db 0Fh, 30h ; wrmsr ; Write EFER.
db 0Fh, 20h, 0C0h ; mov eax, cr0 ; Read CR0. db 0Fh, 20h, 0C0h ; mov eax, cr0 ; Read CR0.
db 0Fh, 0BAh, 0E8h, 1Fh ; bts eax, 31 ; Set PG=1. db 66h, 0Fh, 0BAh, 0E8h, 1Fh; bts eax, 31 ; Set PG=1.
db 0Fh, 22h, 0C0h ; mov cr0, eax ; Write CR0. db 0Fh, 22h, 0C0h ; mov cr0, eax ; Write CR0.
LONG_JUMP: LONG_JUMP:
db 67h, 0EAh ; far jump db 66h, 0EAh ; far jump
dd 0h ; 32-bit offset dd 0h ; 32-bit offset
dw LONG_MODE_CS ; 16-bit selector dw 0h ; 16-bit selector
LongModeStart:: LongModeStart::
mov ax, LONG_MODE_DS mov eax, edi
mov ds, ax mov ds, ax
mov es, ax mov es, ax
mov ss, ax mov ss, ax
@ -187,7 +176,7 @@ RendezvousFunnelProcEnd::
AsmGetAddressMap PROC AsmGetAddressMap PROC
mov rax, offset RendezvousFunnelProcStart mov rax, offset RendezvousFunnelProcStart
mov qword ptr [rcx], rax mov qword ptr [rcx], rax
mov qword ptr [rcx + 8h], Flat32Start - RendezvousFunnelProcStart mov qword ptr [rcx + 8h], 0
mov qword ptr [rcx + 10h], LongModeStart - RendezvousFunnelProcStart mov qword ptr [rcx + 10h], LongModeStart - RendezvousFunnelProcStart
mov qword ptr [rcx + 18h], RendezvousFunnelProcEnd - RendezvousFunnelProcStart mov qword ptr [rcx + 18h], RendezvousFunnelProcEnd - RendezvousFunnelProcStart
ret ret

61
UefiCpuPkg/CpuMpPei/X64/MpFuncs.nasm
View File

@ -52,23 +52,16 @@ BITS 16
mov si, BufferStartLocation mov si, BufferStartLocation
mov ebx, [si] mov ebx, [si]
mov di, PmodeOffsetLocation
mov eax, [di]
mov di, ax
sub di, 06h
add eax, ebx
mov [di],eax
mov di, LmodeOffsetLocation mov di, LmodeOffsetLocation
mov eax, [di] mov eax, [di]
mov di, CodeSegmentLocation
mov edx, [di]
mov di, ax mov di, ax
sub di, 06h sub di, 02h
mov [di],dx ; Patch long mode CS
sub di, 04h
add eax, ebx add eax, ebx
mov [di],eax mov [di],eax ; Patch address
mov si, Cr3Location
mov ecx,[si] ; ECX is keeping the value of CR3
mov si, GdtrLocation mov si, GdtrLocation
o32 lgdt [cs:si] o32 lgdt [cs:si]
@ -77,43 +70,38 @@ o32 lgdt [cs:si]
o32 lidt [cs:si] o32 lidt [cs:si]
mov di, DataSegmentLocation
mov edi, [di] ; Save long mode DS in edi
mov si, Cr3Location ; Save CR3 in ecx
mov ecx, [si]
xor ax, ax xor ax, ax
mov ds, ax mov ds, ax ; Clear data segment
mov eax, cr0 ; Get control register 0 mov eax, cr0 ; Get control register 0
or eax, 000000003h ; Set PE bit (bit #0) & MP or eax, 000000003h ; Set PE bit (bit #0) & MP
mov cr0, eax mov cr0, eax
jmp PROTECT_MODE_CS:strict dword 0 ; far jump to protected mode
BITS 32
Flat32Start: ; protected mode entry point
mov ax, PROTECT_MODE_DS
mov ds, ax
mov es, ax
mov fs, ax
mov gs, ax
mov ss, ax
mov eax, cr4 mov eax, cr4
bts eax, 5 bts eax, 5
mov cr4, eax mov cr4, eax
mov cr3, ecx mov cr3, ecx ; Load CR3
mov ecx, 0c0000080h ; EFER MSR number
rdmsr ; Read EFER
bts eax, 8 ; Set LME=1
wrmsr ; Write EFER
mov ecx, 0c0000080h ; EFER MSR number. mov eax, cr0 ; Read CR0
rdmsr ; Read EFER. bts eax, 31 ; Set PG=1
bts eax, 8 ; Set LME=1. mov cr0, eax ; Write CR0
wrmsr ; Write EFER.
mov eax, cr0 ; Read CR0. jmp 0:strict dword 0 ; far jump to long mode
bts eax, 31 ; Set PG=1.
mov cr0, eax ; Write CR0.
jmp LONG_MODE_CS:strict dword 0 ; far jump to long mode
BITS 64 BITS 64
LongModeStart: LongModeStart:
mov ax, LONG_MODE_DS mov eax, edi
mov ds, ax mov ds, ax
mov es, ax mov es, ax
mov ss, ax mov ss, ax
@ -171,6 +159,7 @@ CProcedureInvoke:
sub rsp, 20h sub rsp, 20h
call rax ; invoke C function call rax ; invoke C function
add rsp, 20h add rsp, 20h
jmp $
RendezvousFunnelProcEnd: RendezvousFunnelProcEnd:
@ -181,7 +170,7 @@ global ASM_PFX(AsmGetAddressMap)
ASM_PFX(AsmGetAddressMap): ASM_PFX(AsmGetAddressMap):
mov rax, ASM_PFX(RendezvousFunnelProc) mov rax, ASM_PFX(RendezvousFunnelProc)
mov qword [rcx], rax mov qword [rcx], rax
mov qword [rcx + 8h], Flat32Start - RendezvousFunnelProcStart mov qword [rcx + 8h], 0
mov qword [rcx + 10h], LongModeStart - RendezvousFunnelProcStart mov qword [rcx + 10h], LongModeStart - RendezvousFunnelProcStart
mov qword [rcx + 18h], RendezvousFunnelProcEnd - RendezvousFunnelProcStart mov qword [rcx + 18h], RendezvousFunnelProcEnd - RendezvousFunnelProcStart
ret ret