Maulik V Vaghela a6d7c00f1d arch/x86/post.c: Hide cmos_post_code from SMM context
Code in SMM segment using cmos_post_code will give compiler error since
cmos_post_code function is not getting compiled during SMM stage.

Also as per patch discussion, CMOS uses a split IO transaction and it's not
really safe to call cmos_post_code from SMM context. Thus we'll hide the
call for SMM context.

Change-Id: Iffdcccaad48e7ad96e068d07046630fbe4297e65
Signed-off-by: Maulik V Vaghela <maulik.v.vaghela@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38370
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
2020-01-18 10:57:59 +00:00

27 lines
742 B
C

/*
* This file is part of the coreboot project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; version 2 of
* the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <stdint.h>
#include <console/console.h>
#include <arch/io.h>
void arch_post_code(uint8_t value)
{
if (CONFIG(POST_IO))
outb(value, CONFIG_POST_IO_PORT);
if (CONFIG(CMOS_POST) && !ENV_SMM)
cmos_post_code(value);
}