com_init.c

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/* SPDX-License-Identifier: GPL-2.0-or-later */
 
#include <bootblock_common.h>
#include <superio/ite/common/ite.h>
#include <superio/ite/it8613e/it8613e.h>
 
#define SERIAL1_DEV PNP_DEV(0x2e, IT8613E_SP1)
#define GPIO_DEV PNP_DEV(0x2e, IT8613E_GPIO)
 
void bootblock_mainboard_early_init(void)
{
        ite_reg_write(GPIO_DEV, 0x2c, 0x41); /* disable K8 power seq */
        ite_reg_write(GPIO_DEV, 0x2d, 0x02); /* PCICLK 25MHz */
        ite_enable_serial(SERIAL1_DEV, CONFIG_TTYS0_BASE);
}