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cpu/x86: Rename paging structure variables for clarity

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The following variables have been renamed:

* PDPE_table -> PDPT (Page Directory Pointer Table)
* PDE_tables -> PDT (Page Directory Table)

This change improves the consistency and clarity of the code
as per AMD Architecture Programmer's Manual document.

PML4 -> PDPT -> PDT -> 2MB Physical Page

TEST=Able to build and boot google/rex64.

Change-Id: Ib57d1d54c2c1f4fcce2315b508ed7643251a20c5
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83101
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com>
This commit is contained in:
Subrata Banik 2024-06-17 12:55:21 +05:30
parent 04fd591b08
commit 3d523c4cd8
1 changed files with 5 additions and 5 deletions
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10
src/cpu/x86/64bit/pt.S
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@ -20,16 +20,16 @@
.global PM4LE
.align 4096
PM4LE:
.quad _GEN_DIR(PDPE_table)
.quad _GEN_DIR(PDPT)
.align 4096
PDE_tables: /* identity map 2MiB pages */
PDT: /* identity map 2MiB pages */
.rept 2048
.quad _GEN_PAGE(0x200000 * ((. - PDE_tables) >> 3))
.quad _GEN_PAGE(0x200000 * ((. - PDT) >> 3))
.endr
.align 4096
PDPE_table: /* Point to PDE */
PDPT: /* Point to PDT */
.rept 4
.quad _GEN_DIR(PDE_tables + 4096 * ((. - PDPE_table) >> 3))
.quad _GEN_DIR(PDT + 4096 * ((. - PDPT) >> 3))
.endr