From 597b9e9d71a2dd728e4192fa9a083004c96cdfbc Mon Sep 17 00:00:00 2001 From: Arthur Heymans Date: Tue, 19 Apr 2022 20:48:42 +0200 Subject: cpu/x86/64bit: Generate static page tables from an assembly file This removes the need for a tool to generate simple identity pages. Future patches will link this page table directly into the stages on some platforms so having an assembly file makes a lot of sense. This also optimizes the size of the page of each 4K page by placing the PDPE_table below the PDE. Change-Id: Ia1e31b701a2584268c85d327bf139953213899e3 Signed-off-by: Arthur Heymans Reviewed-on: https://review.coreboot.org/c/coreboot/+/63725 Tested-by: build bot (Jenkins) Reviewed-by: Raul Rangel --- Documentation/arch/x86/index.md | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'Documentation/arch/x86') diff --git a/Documentation/arch/x86/index.md b/Documentation/arch/x86/index.md index a30c5e25f83c..c7115b46d25d 100644 --- a/Documentation/arch/x86/index.md +++ b/Documentation/arch/x86/index.md @@ -26,9 +26,7 @@ In order to add support for x86_64 the following assumptions were made: * A stage can install new page tables in RAM ## Page tables -Page tables are generated by a tool in `util/pgtblgen/pgtblgen`. It writes -the page tables to a file which is then included into the CBFS as file called -`pagetables`. +A `pagetables` cbfs file is generated based on an assembly file. To generate the static page tables it must know the physical address where to place the file. -- cgit v1.2.3