projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| eee1d2ca JJ |
1 | ;------------------------------------------------------------------------------\r |
| 2 | ; @file\r | |
| 3 | ; Emits Page Tables for 1:1 mapping of the addresses 0 - 0x100000000 (4GB)\r | |
| 4 | ;\r | |
| 5 | ; Copyright (c) 2008 - 2014, Intel Corporation. All rights reserved.<BR>\r | |
| 0acd8697 | 6 | ; SPDX-License-Identifier: BSD-2-Clause-Patent\r |
| eee1d2ca JJ |
7 | ;\r |
| 8 | ;------------------------------------------------------------------------------\r | |
| 9 | \r | |
| 10 | BITS 64\r | |
| 11 | \r | |
| 12 | %define ALIGN_TOP_TO_4K_FOR_PAGING\r | |
| 13 | \r | |
| 60d8bb9f | 14 | %define PAGE_2M_PDE_ATTR (PAGE_SIZE + \\r |
| eee1d2ca JJ |
15 | PAGE_ACCESSED + \\r |
| 16 | PAGE_DIRTY + \\r | |
| 17 | PAGE_READ_WRITE + \\r | |
| 18 | PAGE_PRESENT)\r | |
| 19 | \r | |
| 20 | %define PAGE_PDP_ATTR (PAGE_ACCESSED + \\r | |
| 21 | PAGE_READ_WRITE + \\r | |
| 22 | PAGE_PRESENT)\r | |
| 23 | \r | |
| 24 | %define PGTBLS_OFFSET(x) ((x) - TopLevelPageDirectory)\r | |
| 25 | %define PGTBLS_ADDR(x) (ADDR_OF(TopLevelPageDirectory) + (x))\r | |
| 26 | \r | |
| 27 | %define PDP(offset) (ADDR_OF(TopLevelPageDirectory) + (offset) + \\r | |
| 28 | PAGE_PDP_ATTR)\r | |
| 29 | %define PTE_2MB(x) ((x << 21) + PAGE_2M_PDE_ATTR)\r | |
| 30 | \r | |
| 31 | TopLevelPageDirectory:\r | |
| 32 | \r | |
| 33 | ;\r | |
| 34 | ; Top level Page Directory Pointers (1 * 512GB entry)\r | |
| 35 | ;\r | |
| 36 | DQ PDP(0x1000)\r | |
| 37 | \r | |
| 38 | \r | |
| 39 | ;\r | |
| 40 | ; Next level Page Directory Pointers (4 * 1GB entries => 4GB)\r | |
| 41 | ;\r | |
| 42 | TIMES 0x1000-PGTBLS_OFFSET($) DB 0\r | |
| 43 | \r | |
| 44 | DQ PDP(0x2000)\r | |
| 45 | DQ PDP(0x3000)\r | |
| 46 | DQ PDP(0x4000)\r | |
| 47 | DQ PDP(0x5000)\r | |
| 48 | \r | |
| 49 | ;\r | |
| 50 | ; Page Table Entries (2048 * 2MB entries => 4GB)\r | |
| 51 | ;\r | |
| 52 | TIMES 0x2000-PGTBLS_OFFSET($) DB 0\r | |
| 53 | \r | |
| 54 | %assign i 0\r | |
| 55 | %rep 0x800\r | |
| 56 | DQ PTE_2MB(i)\r | |
| 57 | %assign i i+1\r | |
| 58 | %endrep\r | |
| 59 | \r | |
| 60 | EndOfPageTables:\r |