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os/kernelhwsrv/kernel/eka/nkernsmp/x86/nccpu.cia
author sl
Tue, 10 Jun 2014 14:32:02 +0200
changeset 1 260cb5ec6c19
permissions -rw-r--r--
Update contrib. 
     1 // Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of the License "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 // e32\nkernsmp\x86\nccpu.cia

    15 // 

    16 //

    17 

    18 #include <x86.h>

    19 #include <apic.h>

    20 

    21 __NAKED__ void cmos_write(TUint32 val, TUint32 addr)

    22 	{

    23 	asm("mov eax, [esp+8]");

    24 	asm("out 0x70, al");

    25 	asm("mov eax, [esp+4]");

    26 	asm("out 0x71, al");

    27 	asm("ret");

    28 	}

    29 

    30 __NAKED__ void SetupApInitInfo(volatile SApInitInfo&)

    31 	{

    32 	asm("mov ecx, [esp+4]");

    33 	asm("sgdt [ecx+%0]": :"i"_FOFF(SApInitInfo, iGdtr));

    34 	asm("sidt [ecx+%0]": :"i"_FOFF(SApInitInfo, iIdtr));

    35 	asm("mov eax, cr0");

    36 	asm("mov [ecx+%0], eax": :"i"_FOFF(SApInitInfo, iCr0));

    37 	asm("mov eax, cr3");

    38 	asm("mov [ecx+%0], eax": :"i"_FOFF(SApInitInfo, iCr3));

    39 	MOV_EAX_CR4;

    40 	asm("mov [ecx+%0], eax": :"i"_FOFF(SApInitInfo, iCr4));

    41 	asm("ret");

    42 	}

    43 

    44 __NAKED__ void _ApMain()

    45 	{

    46 	asm("mov eax, %0" : : "i" (RING0_DS));

    47 	asm("mov ss, ax ");

    48 	asm("mov ds, ax ");

    49 	asm("mov es, ax ");

    50 	asm("mov fs, ax ");

    51 	asm("mov gs, ax ");

    52 	asm("lgdt [edi+%0]" : : "i" _FOFF(SApInitInfo, iGdtr));

    53 	asm("lidt [edi+%0]" : : "i" _FOFF(SApInitInfo, iIdtr));

    54 	asm("mov esp, [edi+%0]" : : "i" _FOFF(SApInitInfo, iRgs.iEsp));

    55 	asm("mov eax, [edi+%0]" : : "i" _FOFF(SApInitInfo, iBootFlag));

    56 	asm("lock dec dword ptr [edi+%0]" : : "i" _FOFF(SApInitInfo, iBootFlag));

    57 	asm("sub eax, 2 ");

    58 	asm("wait_for_bp: ");

    59 	asm("cmp eax, [edi+%0]" : : "i" _FOFF(SApInitInfo, iBootFlag));

    60 	X86_PAUSE

    61 	asm("jne wait_for_bp ");

    62 

    63 	asm("mov eax, cr0 ");

    64 	asm("and al, 0xf7 ");	// enable access to FPU

    65 	asm("mov cr0, eax ");

    66 	asm("fninit ");			// initialise coprocessor

    67 	asm("fwait ");

    68 	asm("or al, 8 ");

    69 	asm("mov cr0, eax ");	// disable access to coprocessor

    70 

    71 	asm("mov ecx, [edi+%0]" : : "i" _FOFF(SApInitInfo, iExtra));

    72 	asm("mov eax, [ecx+%0]" : : "i" _FOFF(SAPBootInfo, iMain));

    73 	asm("push ecx ");

    74 	asm("call eax ");

    75 	asm("add esp, 4 ");

    76 	asm("spin: ");

    77 	asm("hlt ");

    78 	asm("jmp spin ");

    79 	}
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