cc62b85a4a
This patch only renames macro, with no code logic impacted. Two purpose to rename macro: 1. Align some macro name in PageTables1G.asm and PageTables2M.asm, so that these two files can be easily combined later. 2. Some Macro names such as PDP are not accurate, since 4 level page entry also uses this macro. PAGE_NLE (no leaf entry) is better Cc: Eric Dong <eric.dong@intel.com> Reviewed-by: Ray Ni <ray.ni@intel.com> Cc: Rahul Kumar <rahul1.kumar@intel.com> Tested-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Gerd Hoffmann <kraxel@redhat.com> Cc: Debkumar De <debkumar.de@intel.com> Cc: Catharine West <catharine.west@intel.com> Signed-off-by: Zhiguang Liu <zhiguang.liu@intel.com>
68 lines
1.7 KiB
NASM
68 lines
1.7 KiB
NASM
;------------------------------------------------------------------------------
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; @file
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; Emits Page Tables for 1:1 mapping of the addresses 0 - 0x100000000 (4GB)
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;
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; Copyright (c) 2008 - 2023, Intel Corporation. All rights reserved.<BR>
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; SPDX-License-Identifier: BSD-2-Clause-Patent
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;
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;------------------------------------------------------------------------------
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BITS 64
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%define ALIGN_TOP_TO_4K_FOR_PAGING
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;
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; Page table big leaf entry attribute:
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; PDPTE 1GB entry or PDE 2MB entry
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;
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%define PAGE_BLE_ATTR (PAGE_SIZE + \
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PAGE_ACCESSED + \
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PAGE_DIRTY + \
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PAGE_READ_WRITE + \
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PAGE_PRESENT)
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;
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; Page table non-leaf entry attribute
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;
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%define PAGE_NLE_ATTR (PAGE_ACCESSED + \
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PAGE_READ_WRITE + \
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PAGE_PRESENT)
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%define PGTBLS_OFFSET(x) ((x) - TopLevelPageDirectory)
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%define PGTBLS_ADDR(x) (ADDR_OF(TopLevelPageDirectory) + (x))
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%define PAGE_NLE(offset) (ADDR_OF(TopLevelPageDirectory) + (offset) + \
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PAGE_NLE_ATTR)
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%define PAGE_PDE_2MB(x) ((x << 21) + PAGE_BLE_ATTR)
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TopLevelPageDirectory:
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;
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; Top level Page Directory Pointers (1 * 512GB entry)
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;
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DQ PAGE_NLE(0x1000)
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;
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; Next level Page Directory Pointers (4 * 1GB entries => 4GB)
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;
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TIMES 0x1000-PGTBLS_OFFSET($) DB 0
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DQ PAGE_NLE(0x2000)
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DQ PAGE_NLE(0x3000)
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DQ PAGE_NLE(0x4000)
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DQ PAGE_NLE(0x5000)
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;
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; Page Table Entries (2048 * 2MB entries => 4GB)
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;
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TIMES 0x2000-PGTBLS_OFFSET($) DB 0
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%assign i 0
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%rep 0x800
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DQ PAGE_PDE_2MB(i)
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%assign i i+1
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%endrep
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EndOfPageTables:
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