romstage.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <amdblocks/acpimmio.h>
#include <console/console.h>
#include <northbridge/amd/agesa/state_machine.h>
#include <southbridge/amd/agesa/hudson/smbus.h>
#include <stdint.h>
 
void board_BeforeAgesa(struct sysinfo *cb)
{
        u8 byte;
 
        post_code(0x30);
 
        /* turn on secondary smbus at b20 */
        pm_write8(0x28, pm_read8(0x28) | 1);
 
        /* set DDR3 voltage */
        byte = CONFIG_BOARD_ASUS_F2A85_M_DDR3_VOLT_VAL;
 
        /* default is byte = 0x0, so no need to set it in this case */
        if (byte)
                do_smbus_write_byte(0xb20, 0x15, 0x3, byte);
}