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arch/x86: Link gdt_init.S into bootblock

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Followup work forces gdtptr and gdt towards the top of
bootblock. They need to be realmode-addressable, i.e.
within top 64 KiB or same segment with .reset.

Change-Id: Ib6f23b2808d0a7e0d277d00a9b0f30c49fdefdd5
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/47965
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
This commit is contained in:
Kyösti Mälkki
2020-11-19 16:41:28 +02:00
committed by Hung-Te Lin
parent 54b5e20cf8
commit 97b76f7191
4 changed files with 4 additions and 6 deletions
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4
src/arch/x86/c_start.S
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@@ -142,10 +142,10 @@ gdtaddr:
/* This is the gdt for GCC part of coreboot.
* It is different from the gdt in ASM part of coreboot
* which is defined in entry32.inc
* which is defined in gdt_init.S
*
* When the machine is initially started, we use a very simple
* gdt from ROM (that in entry32.inc) which only contains those
* gdt from ROM (that in gdt_init.S) which only contains those
* entries we need for protected mode.
*
* When we're executing code from RAM, we want to do more complex