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UefiCpuPkg/ResetVector: Simplify page table creation in ResetVector

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Currently, page table creation has many hard-code values about the
offset to the start of page table. To simplify it, add Labels such
as Pml4, Pdp and Pd, so that we can remove many hard-code values

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>
This commit is contained in:
Liu, Zhiguang
2023-05-08 16:15:01 +08:00
committed by mergify[bot]
parent cc62b85a4a
commit c19e3f578f
3 changed files with 26 additions and 34 deletions
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4
UefiCpuPkg/ResetVector/Vtf0/Ia32/PageTables64.asm
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@@ -2,7 +2,7 @@
; @file
; Sets the CR3 register for 64-bit paging
;
; Copyright (c) 2008 - 2013, Intel Corporation. All rights reserved.<BR>
; Copyright (c) 2008 - 2023, Intel Corporation. All rights reserved.<BR>
; SPDX-License-Identifier: BSD-2-Clause-Patent
;
;------------------------------------------------------------------------------
@@ -17,7 +17,7 @@ SetCr3ForPageTables64:
;
; These pages are built into the ROM image in X64/PageTables.asm
;
mov eax, ADDR_OF(TopLevelPageDirectory)
mov eax, ADDR_OF(Pml4)
mov cr3, eax
OneTimeCallRet SetCr3ForPageTables64