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https://github.com/acidanthera/audk.git
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Fix the bug that EnablePaging64() should assert() for x64 platform.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@8223 6f19259b-4bc3-4df7-8a09-765794883524
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qhuang8
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commit
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@ -370,7 +370,6 @@
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X64/Invd.asm
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X64/Wbinvd.asm
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X64/DisablePaging64.asm
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X64/EnablePaging64.asm
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X64/Mwait.asm
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X64/Monitor.asm
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X64/ReadPmc.asm
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@ -533,7 +532,6 @@
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X64/FxSave.S | GCC
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X64/FxRestore.S | GCC
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X64/FlushCacheLine.S | GCC
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X64/EnablePaging64.S | GCC
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X64/EnableInterrupts.S | GCC
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X64/EnableDisableInterrupts.S | GCC
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X64/DisablePaging64.S | GCC
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@ -1,61 +0,0 @@
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#------------------------------------------------------------------------------
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#
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# Copyright (c) 2006 - 2008, Intel Corporation
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# All rights reserved. This program and the accompanying materials
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# are licensed and made available under the terms and conditions of the BSD License
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# which accompanies this distribution. The full text of the license may be found at
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# http://opensource.org/licenses/bsd-license.php
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#
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# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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#
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# Module Name:
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#
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# EnablePaging64.S
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#
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# Abstract:
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#
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# AsmEnablePaging64 function
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#
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# Notes:
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#
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#------------------------------------------------------------------------------
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#------------------------------------------------------------------------------
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# VOID
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# EFIAPI
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# InternalX86EnablePaging64 (
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# IN UINT16 Cs,
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# IN UINT64 EntryPoint,
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# IN UINT64 Context1, OPTIONAL
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# IN UINT64 Context2, OPTIONAL
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# IN UINT64 NewStack
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# );
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#------------------------------------------------------------------------------
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.global ASM_PFX(InternalX86EnablePaging64)
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ASM_PFX(InternalX86EnablePaging64):
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cli
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pop %rax # skip the return address
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callq Base
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Base:
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addl $(L1-Base),(%rsp) # offset for ret, seg is the 1st arg
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mov %cr4,%rax
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or $0x20,%al
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mov %rax,%cr4 # enable PAE
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mov $0xc0000080,%ecx
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rdmsr
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or $0x1,%ah # set LME
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wrmsr
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mov %cr0,%rax
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bts $0x1f,%eax
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mov %rax,%cr0 # enable paging
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lret
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L1: # long mode starts here
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addr32 mov (%esp),%rbx
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addr32 mov 0x8(%esp),%rcx
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addr32 mov 0x10(%esp),%rdx
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addr32 mov 0x18(%esp),%rsp
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add $-0x20,%rsp
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callq *%rbx
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jmp . # dead loop if EntryPoint() returned
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@ -1,64 +0,0 @@
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;------------------------------------------------------------------------------
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;
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; Copyright (c) 2006 - 2008, Intel Corporation
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; All rights reserved. This program and the accompanying materials
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; are licensed and made available under the terms and conditions of the BSD License
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; which accompanies this distribution. The full text of the license may be found at
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; http://opensource.org/licenses/bsd-license.php
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;
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; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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;
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; Module Name:
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;
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; EnablePaging64.Asm
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;
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; Abstract:
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;
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; AsmEnablePaging64 function
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;
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; Notes:
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;
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;------------------------------------------------------------------------------
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.code
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;------------------------------------------------------------------------------
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; VOID
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; EFIAPI
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; InternalX86EnablePaging64 (
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; IN UINT16 Cs,
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; IN UINT64 EntryPoint,
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; IN UINT64 Context1, OPTIONAL
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; IN UINT64 Context2, OPTIONAL
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; IN UINT64 NewStack
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; );
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;------------------------------------------------------------------------------
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InternalX86EnablePaging64 PROC
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cli
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pop rax ; skip the return address
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call @Base
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@Base:
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add dword ptr [rsp], @F - @Base ; offset for far retf, seg is the 1st arg
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mov rax, cr4
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or al, (1 SHL 5)
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mov cr4, rax ; enable PAE
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mov ecx, 0c0000080h
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rdmsr
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or ah, 1 ; set LME
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wrmsr
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mov rax, cr0
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bts eax, 31
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mov cr0, rax ; enable paging
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retf
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@@: ; long mode starts here
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mov rbx, [esp]
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mov rcx, [esp + 8]
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mov rdx, [esp + 10h]
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mov rsp, [esp + 18h]
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add rsp, -20h
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call rbx
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hlt ; halt processor if EntryPoint() returned
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InternalX86EnablePaging64 ENDP
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END
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@ -107,3 +107,47 @@ InternalX86DisablePaging32 (
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//
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ASSERT (FALSE);
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}
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/**
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Enables the 64-bit paging mode on the CPU.
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Enables the 64-bit paging mode on the CPU. CR0, CR3, CR4, and the page tables
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must be properly initialized prior to calling this service. This function
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assumes the current execution mode is 32-bit protected mode with flat
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descriptors. This function is only available on IA-32. After the 64-bit
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paging mode is enabled, control is transferred to the function specified by
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EntryPoint using the new stack specified by NewStack and passing in the
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parameters specified by Context1 and Context2. Context1 and Context2 are
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optional and may be 0. The function EntryPoint must never return.
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@param Cs The 16-bit selector to load in the CS before EntryPoint
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is called. The descriptor in the GDT that this selector
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references must be setup for long mode.
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@param EntryPoint The 64-bit virtual address of the function to call with
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the new stack after paging is enabled.
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@param Context1 The 64-bit virtual address of the context to pass into
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the EntryPoint function as the first parameter after
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paging is enabled.
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@param Context2 The 64-bit virtual address of the context to pass into
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the EntryPoint function as the second parameter after
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paging is enabled.
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@param NewStack The 64-bit virtual address of the new stack to use for
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the EntryPoint function after paging is enabled.
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**/
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VOID
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EFIAPI
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InternalX86EnablePaging64 (
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IN UINT16 Cs,
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IN UINT64 EntryPoint,
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IN UINT64 Context1, OPTIONAL
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IN UINT64 Context2, OPTIONAL
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IN UINT64 NewStack
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)
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{
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//
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// This function cannot work on x64 platform.
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//
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ASSERT (FALSE);
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}
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