diff options
| author | Guo Mang <mang.guo@intel.com> | 2016-08-03 11:46:45 +0800 |
|---|---|---|
| committer | Guo Mang <mang.guo@intel.com> | 2016-08-04 10:33:10 +0800 |
| commit | 9dfd62064d1d1a6344165febb44c7b0d0f3a6a1e (patch) | |
| tree | e6734a38a607f96255aff50d13b92809779ff737 /BraswellPlatformPkg/Common/Silicon/IntelSiliconBasic/CpuInit/Ia32/MpCommon32.s | |
| parent | 177e76bd8e9a863b4bd06a95f0e7cb5e4851812f (diff) | |
| download | edk2-platforms-9dfd62064d1d1a6344165febb44c7b0d0f3a6a1e.tar.xz | |
BraswellPlatformPkg: Move IntelSiliconBasic to Common/Silicon/IntelSiliconBasic
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Guo Mang <mang.guo@intel.com>
Reviewed-by: David Wei <david.wei@intel.com>
Diffstat (limited to 'BraswellPlatformPkg/Common/Silicon/IntelSiliconBasic/CpuInit/Ia32/MpCommon32.s')
| -rw-r--r-- | BraswellPlatformPkg/Common/Silicon/IntelSiliconBasic/CpuInit/Ia32/MpCommon32.s | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/BraswellPlatformPkg/Common/Silicon/IntelSiliconBasic/CpuInit/Ia32/MpCommon32.s b/BraswellPlatformPkg/Common/Silicon/IntelSiliconBasic/CpuInit/Ia32/MpCommon32.s new file mode 100644 index 0000000000..dc110da96a --- /dev/null +++ b/BraswellPlatformPkg/Common/Silicon/IntelSiliconBasic/CpuInit/Ia32/MpCommon32.s @@ -0,0 +1,114 @@ +## @file
+# This is the assembly code for MP/HT (Multiple-processor / Hyper-threading) support
+#
+# Copyright (c) 1999 - 2015, 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.
+#
+##
+
+##include Htequ.inc
+
+.equ VacantFlag , 0x00
+.equ NotVacantFlag , 0xff
+.equ StartupApSignal , 0x6E750000
+.equ MonitorFilterSize, 0x10
+.equ ApCounterInit , 0
+.equ ApInHltLoop , 1
+.equ ApInMwaitLoop , 2
+.equ ApInRunLoop , 3
+
+.equ LockLocation , 0x1000 - 0x0400
+.equ StackStart , LockLocation + 0x4
+.equ StackSize , LockLocation + 0x8
+.equ RendezvousProc , LockLocation + 0x0C
+.equ GdtrProfile , LockLocation + 0x10
+.equ IdtrProfile , LockLocation + 0x16
+.equ BufferStart , LockLocation + 0x1C
+.equ Cr3Location , LockLocation + 0x20
+.equ InitFlag , LockLocation + 0x24
+.equ WakeUpApManner , LockLocation + 0x28
+.equ BistBuffer , LockLocation + 0x2C
+
+.macro PAUSE32
+ .byte 0xF3
+ .byte 0x90
+.endm
+
+
+#-------------------------------------------------------------------------------
+# AsmAcquireMPLock (&Lock)
+#-------------------------------------------------------------------------------
+ASM_GLOBAL ASM_PFX(AsmAcquireMPLock)
+ASM_PFX(AsmAcquireMPLock):
+ pushal
+ movl %esp, %ebp
+
+ movb $NotVacantFlag, %al
+ movl 0x24(%ebp), %ebx
+TryGetLock:
+ lock xchgb (%ebx), %al
+ cmpb $VacantFlag, %al
+ jz LockObtained
+
+ PAUSE32
+
+ jmp TryGetLock
+
+LockObtained:
+ popal
+ ret
+#AsmAcquireMPLock ENDP
+
+#-------------------------------------------------------------------------------
+# AsmReleaseMPLock (&Lock)
+#-------------------------------------------------------------------------------
+ASM_GLOBAL ASM_PFX(AsmReleaseMPLock)
+ASM_PFX(AsmReleaseMPLock):
+ pushal
+ movl %esp, %ebp
+
+ movb $VacantFlag, %al
+ movl 0x24(%ebp), %ebx
+ lock xchgb (%ebx), %al
+
+ popal
+ ret
+#AsmReleaseMPLock ENDP
+
+#-------------------------------------------------------------------------------
+# AsmGetGdtrIdtr (&Gdt, &Idt)#
+#-------------------------------------------------------------------------------------
+ASM_GLOBAL ASM_PFX(AsmGetGdtrIdtr)
+ASM_PFX(AsmGetGdtrIdtr):
+ pushal
+ movl %esp, %ebp
+ sgdt GdtDesc
+ leal GdtDesc, %esi
+ movl 0x24(%ebp), %edi
+ movl %esi, (%edi)
+
+ sidt IdtDesc
+ leal IdtDesc, %esi
+ movl 0x28(%ebp), %edi
+ movl %esi, (%edi)
+
+ popal
+ ret
+#AsmGetGdtrIdtr ENDP
+
+GdtDesc: # GDT descriptor
+ .word 0x03f # GDT limit
+ .word 0x0 # GDT base and limit will be
+ .word 0x0 # filled using sgdt
+
+IdtDesc: # IDT descriptor
+ .word 0x0 # IDT limit
+ .word 0x0 # IDT base and limit will be
+ .word 0x0 # filled using sidt
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