diff options
Diffstat (limited to 'DuetPkg/DxeIpl/Ia32/Paging.c')
| -rw-r--r-- | DuetPkg/DxeIpl/Ia32/Paging.c | 172 |
1 files changed, 0 insertions, 172 deletions
diff --git a/DuetPkg/DxeIpl/Ia32/Paging.c b/DuetPkg/DxeIpl/Ia32/Paging.c deleted file mode 100644 index eb44042c4e..0000000000 --- a/DuetPkg/DxeIpl/Ia32/Paging.c +++ /dev/null @@ -1,172 +0,0 @@ -/** @file
-
-Copyright (c) 2006 - 2007, 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:
- Paging.c
-
-Abstract:
-
-Revision History:
-
-**/
-
-#include "DxeIpl.h"
-#include "HobGeneration.h"
-#include "VirtualMemory.h"
-#include "Debug.h"
-
-#define EFI_PAGE_SIZE_4K 0x1000
-#define EFI_PAGE_SIZE_4M 0x400000
-
-//
-// Create 4G 4M-page table
-// PDE (31:22) : 1024 entries
-//
-#define EFI_MAX_ENTRY_NUM 1024
-
-#define EFI_PDE_ENTRY_NUM EFI_MAX_ENTRY_NUM
-
-#define EFI_PDE_PAGE_NUM 1
-
-#define EFI_PAGE_NUMBER_4M (EFI_PDE_PAGE_NUM)
-
-//
-// Create 4M 4K-page table
-// PTE (21:12) : 1024 entries
-//
-#define EFI_PTE_ENTRY_NUM EFI_MAX_ENTRY_NUM
-#define EFI_PTE_PAGE_NUM 1
-
-#define EFI_PAGE_NUMBER_4K (EFI_PTE_PAGE_NUM)
-
-#define EFI_PAGE_NUMBER (EFI_PAGE_NUMBER_4M + EFI_PAGE_NUMBER_4K)
-
-VOID
-EnableNullPointerProtection (
- UINT8 *PageTable
- )
-{
- IA32_PAGE_TABLE_ENTRY_4K *PageTableEntry4KB;
-
- PageTableEntry4KB = (IA32_PAGE_TABLE_ENTRY_4K *)((UINTN)PageTable + EFI_PAGE_NUMBER_4M * EFI_PAGE_SIZE_4K);
-
- //
- // Fill in the Page Table entries
- // Mark 0~4K as not present
- //
- PageTableEntry4KB->Bits.Present = 0;
-
- return ;
-}
-
-VOID
-Ia32Create4KPageTables (
- UINT8 *PageTable
- )
-{
- UINT64 PageAddress;
- UINTN PTEIndex;
- IA32_PAGE_DIRECTORY_ENTRY_4K *PageDirectoryEntry4KB;
- IA32_PAGE_TABLE_ENTRY_4K *PageTableEntry4KB;
-
- PageAddress = 0;
-
- //
- // Page Table structure 2 level 4K.
- //
- // Page Table 4K : PageDirectoryEntry4K : bits 31-22
- // PageTableEntry : bits 21-12
- //
-
- PageTableEntry4KB = (IA32_PAGE_TABLE_ENTRY_4K *)((UINTN)PageTable + EFI_PAGE_NUMBER_4M * EFI_PAGE_SIZE_4K);
- PageDirectoryEntry4KB = (IA32_PAGE_DIRECTORY_ENTRY_4K *)((UINTN)PageTable);
-
- PageDirectoryEntry4KB->Uint32 = (UINT32)(UINTN)PageTableEntry4KB;
- PageDirectoryEntry4KB->Bits.ReadWrite = 0;
- PageDirectoryEntry4KB->Bits.Present = 1;
- PageDirectoryEntry4KB->Bits.MustBeZero = 1;
-
- for (PTEIndex = 0; PTEIndex < EFI_PTE_ENTRY_NUM; PTEIndex++, PageTableEntry4KB++) {
- //
- // Fill in the Page Table entries
- //
- PageTableEntry4KB->Uint32 = (UINT32)PageAddress;
- PageTableEntry4KB->Bits.ReadWrite = 1;
- PageTableEntry4KB->Bits.Present = 1;
-
- PageAddress += EFI_PAGE_SIZE_4K;
- }
-
- return ;
-}
-
-VOID
-Ia32Create4MPageTables (
- UINT8 *PageTable
- )
-{
- UINT32 PageAddress;
- UINT8 *TempPageTable;
- UINTN PDEIndex;
- IA32_PAGE_TABLE_ENTRY_4M *PageDirectoryEntry4MB;
-
- TempPageTable = PageTable;
-
- PageAddress = 0;
-
- //
- // Page Table structure 1 level 4MB.
- //
- // Page Table 4MB : PageDirectoryEntry4M : bits 31-22
- //
-
- PageDirectoryEntry4MB = (IA32_PAGE_TABLE_ENTRY_4M *)TempPageTable;
-
- for (PDEIndex = 0; PDEIndex < EFI_PDE_ENTRY_NUM; PDEIndex++, PageDirectoryEntry4MB++) {
- //
- // Fill in the Page Directory entries
- //
- PageDirectoryEntry4MB->Uint32 = (UINT32)PageAddress;
- PageDirectoryEntry4MB->Bits.ReadWrite = 1;
- PageDirectoryEntry4MB->Bits.Present = 1;
- PageDirectoryEntry4MB->Bits.MustBe1 = 1;
-
- PageAddress += EFI_PAGE_SIZE_4M;
- }
-
- return ;
-}
-
-VOID *
-PreparePageTable (
- VOID *PageNumberTop,
- UINT8 SizeOfMemorySpace
- )
-/*++
-Description:
- Generate pagetable below PageNumberTop,
- and return the bottom address of pagetable for putting other things later.
---*/
-{
- VOID *PageNumberBase;
-
- PageNumberBase = (VOID *)((UINTN)PageNumberTop - EFI_PAGE_NUMBER * EFI_PAGE_SIZE_4K);
- ZeroMem (PageNumberBase, EFI_PAGE_NUMBER * EFI_PAGE_SIZE_4K);
-
- Ia32Create4MPageTables (PageNumberBase);
- Ia32Create4KPageTables (PageNumberBase);
- //
- // Not enable NULL Pointer Protection if using INTX call
- //
-// EnableNullPointerProtection (PageNumberBase);
-
- return PageNumberBase;
-}
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