1;------------------------------------------------------------------------------ 2; @file 3; Emits Page Tables for 1:1 mapping of the addresses 0 - 0x100000000 (4GB) 4; 5; Copyright (c) 2008 - 2014, Intel Corporation. All rights reserved.<BR> 6; This program and the accompanying materials 7; are licensed and made available under the terms and conditions of the BSD License 8; which accompanies this distribution. The full text of the license may be found at 9; http://opensource.org/licenses/bsd-license.php 10; 11; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 12; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 13; 14;------------------------------------------------------------------------------ 15 16BITS 64 17 18%define ALIGN_TOP_TO_4K_FOR_PAGING 19 20%define PAGE_PRESENT 0x01 21%define PAGE_READ_WRITE 0x02 22%define PAGE_USER_SUPERVISOR 0x04 23%define PAGE_WRITE_THROUGH 0x08 24%define PAGE_CACHE_DISABLE 0x010 25%define PAGE_ACCESSED 0x020 26%define PAGE_DIRTY 0x040 27%define PAGE_PAT 0x080 28%define PAGE_GLOBAL 0x0100 29%define PAGE_2M_MBO 0x080 30%define PAGE_2M_PAT 0x01000 31 32%define PAGE_2M_PDE_ATTR (PAGE_2M_MBO + \ 33 PAGE_ACCESSED + \ 34 PAGE_DIRTY + \ 35 PAGE_READ_WRITE + \ 36 PAGE_PRESENT) 37 38%define PAGE_PDP_ATTR (PAGE_ACCESSED + \ 39 PAGE_READ_WRITE + \ 40 PAGE_PRESENT) 41 42%define PGTBLS_OFFSET(x) ((x) - TopLevelPageDirectory) 43%define PGTBLS_ADDR(x) (ADDR_OF(TopLevelPageDirectory) + (x)) 44 45%define PDP(offset) (ADDR_OF(TopLevelPageDirectory) + (offset) + \ 46 PAGE_PDP_ATTR) 47%define PTE_2MB(x) ((x << 21) + PAGE_2M_PDE_ATTR) 48 49TopLevelPageDirectory: 50 51 ; 52 ; Top level Page Directory Pointers (1 * 512GB entry) 53 ; 54 DQ PDP(0x1000) 55 56 57 ; 58 ; Next level Page Directory Pointers (4 * 1GB entries => 4GB) 59 ; 60 TIMES 0x1000-PGTBLS_OFFSET($) DB 0 61 62 DQ PDP(0x2000) 63 DQ PDP(0x3000) 64 DQ PDP(0x4000) 65 DQ PDP(0x5000) 66 67 ; 68 ; Page Table Entries (2048 * 2MB entries => 4GB) 69 ; 70 TIMES 0x2000-PGTBLS_OFFSET($) DB 0 71 72%assign i 0 73%rep 0x800 74 DQ PTE_2MB(i) 75 %assign i i+1 76%endrep 77 78EndOfPageTables: 79