early_init.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <bootblock_common.h>
#include <console/console.h>
#include <device/pnp_ops.h>
#include <northbridge/intel/pineview/pineview.h>
#include <southbridge/intel/i82801gx/i82801gx.h>
#include <superio/ite/common/ite.h>
#include <superio/ite/it8720f/it8720f.h>
 
#define SERIAL_DEV      PNP_DEV(0x2e, IT8720F_SP1)
#define GPIO_DEV        PNP_DEV(0x2e, IT8720F_GPIO)
#define EC_DEV          PNP_DEV(0x2e, IT8720F_EC)
 
void bootblock_mainboard_early_init(void)
{
        /* Set default GPIOs on superio */
        pnp_enter_conf_state(GPIO_DEV);
 
        pnp_set_logical_device(GPIO_DEV);
        pnp_write_config(GPIO_DEV, 0x25, 0x00);
        pnp_write_config(GPIO_DEV, 0x26, 0x0c);
        pnp_write_config(GPIO_DEV, 0x28, 0x41);
        pnp_write_config(GPIO_DEV, 0x2c, 0x01);
        pnp_write_config(GPIO_DEV, 0x62, 0x08);
        pnp_write_config(GPIO_DEV, 0x72, 0x00);
        pnp_write_config(GPIO_DEV, 0xb8, 0x00);
        pnp_write_config(GPIO_DEV, 0xc0, 0x00);
        pnp_write_config(GPIO_DEV, 0xc1, 0x0c);
        pnp_write_config(GPIO_DEV, 0xc3, 0x41);
        pnp_write_config(GPIO_DEV, 0xc8, 0x00);
        pnp_write_config(GPIO_DEV, 0xcb, 0x00);
        pnp_write_config(GPIO_DEV, 0xe9, 0x01);
        pnp_write_config(GPIO_DEV, 0xfc, 0xa4);
 
        pnp_exit_conf_state(GPIO_DEV);
 
        ite_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
 
        pnp_enter_conf_state(GPIO_DEV);
        pnp_set_logical_device(GPIO_DEV);
 
        printk(BIOS_DEBUG, "ITE register 0xef: 0x%02x ", pnp_read_config(GPIO_DEV, 0xef));
 
        /* Disable SIO reboot */
        pnp_write_config(GPIO_DEV, 0xef, 0x7e);
 
        printk(BIOS_DEBUG, "=> 0x%02x\n", pnp_read_config(GPIO_DEV, 0xef));
 
        pnp_set_logical_device(EC_DEV);
        pnp_write_config(EC_DEV, 0x70, 0x00); /* Don't use IRQ9 */
        pnp_write_config(EC_DEV, 0x30, 0x01); /* Enable */
 
        pnp_exit_conf_state(GPIO_DEV);
}
 
void get_mb_spd_addrmap(u8 *spd_addrmap)
{
        spd_addrmap[0] = 0x50;
        spd_addrmap[1] = 0x51;
}