projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 60d8bb9f AA |
1 | ;------------------------------------------------------------------------------\r |
| 2 | ; @file\r | |
| 3 | ; Emits Page Tables for 1:1 mapping of the addresses 0 - 0x8000000000 (512GB)\r | |
| 4 | ;\r | |
| 5 | ; Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>\r | |
| 6 | ; SPDX-License-Identifier: BSD-2-Clause-Patent\r | |
| 7 | ; Linear-Address Translation to a 1-GByte Page\r | |
| 8 | ;\r | |
| 9 | ;------------------------------------------------------------------------------\r | |
| 10 | \r | |
| 11 | BITS 64\r | |
| 12 | \r | |
| 13 | %define ALIGN_TOP_TO_4K_FOR_PAGING\r | |
| 14 | \r | |
| 15 | %define PAGE_PDP_ATTR (PAGE_ACCESSED + \\r | |
| 16 | PAGE_READ_WRITE + \\r | |
| 17 | PAGE_PRESENT)\r | |
| 18 | \r | |
| 19 | %define PAGE_PDP_1G_ATTR (PAGE_ACCESSED + \\r | |
| 20 | PAGE_READ_WRITE + \\r | |
| 21 | PAGE_DIRTY + \\r | |
| 22 | PAGE_PRESENT + \\r | |
| 23 | PAGE_SIZE)\r | |
| 24 | \r | |
| 25 | %define PGTBLS_OFFSET(x) ((x) - TopLevelPageDirectory)\r | |
| 26 | %define PGTBLS_ADDR(x) (ADDR_OF(TopLevelPageDirectory) + (x))\r | |
| 27 | \r | |
| 28 | %define PDP(offset) (ADDR_OF(TopLevelPageDirectory) + (offset) + \\r | |
| 29 | PAGE_PDP_ATTR)\r | |
| 30 | \r | |
| 31 | %define PDP_1G(x) ((x << 30) + PAGE_PDP_1G_ATTR)\r | |
| 32 | \r | |
| 33 | ALIGN 16\r | |
| 34 | \r | |
| 35 | TopLevelPageDirectory:\r | |
| 36 | \r | |
| 37 | ;\r | |
| 38 | ; Top level Page Directory Pointers (1 * 512GB entry)\r | |
| 39 | ;\r | |
| 40 | DQ PDP(0x1000)\r | |
| 41 | \r | |
| 42 | TIMES 0x1000-PGTBLS_OFFSET($) DB 0\r | |
| 43 | ;\r | |
| 44 | ; Next level Page Directory Pointers (512 * 1GB entries => 512GB)\r | |
| 45 | ;\r | |
| 46 | %assign i 0\r | |
| 47 | %rep 512\r | |
| 48 | DQ PDP_1G(i)\r | |
| 49 | %assign i i+1\r | |
| 50 | %endrep\r | |
| 51 | TIMES 0x2000-PGTBLS_OFFSET($) DB 0\r | |
| 52 | \r | |
| 53 | EndOfPageTables:\r |