smi.c

Go to the documentation of this file.

/* SPDX-License-Identifier: GPL-2.0-or-later */
 
/*
 * Utilities for SMM setup
 */
 
#include <amdblocks/acpimmio.h>
#include <cpu/x86/smm.h>
 
#include "smi.h"
 
/** Set the EOS bit and enable SMI generation from southbridge */
void global_smi_enable(void)
{
        uint32_t reg = smi_read32(SMI_REG_SMITRIG0);
        reg &= ~SMITRG0_SMIENB; /* Enable SMI generation */
        reg |= SMITRG0_EOS;     /* Set EOS bit */
        smi_write32(SMI_REG_SMITRIG0, reg);
}