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/*
* Copyright (C) 2013 Imagination Technologies
* Author: Paul Burton <paul.burton@mips.com>
*
* Setup code for the FDC37M817 super I/O controller
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/io.h>
#define SIO_CONF_PORT 0x3f0
#define SIO_DATA_PORT 0x3f1
enum sio_conf_key {
SIOCONF_DEVNUM = 0x07,
SIOCONF_ACTIVATE = 0x30,
SIOCONF_ENTER_SETUP = 0x55,
SIOCONF_BASE_HIGH = 0x60,
SIOCONF_BASE_LOW = 0x61,
SIOCONF_PRIMARY_INT = 0x70,
SIOCONF_EXIT_SETUP = 0xaa,
SIOCONF_MODE = 0xf0,
};
static struct {
u8 key;
u8 data;
} sio_config[] = {
/* tty0 */
{ SIOCONF_DEVNUM, 0x04 },
{ SIOCONF_BASE_HIGH, 0x03 },
{ SIOCONF_BASE_LOW, 0xf8 },
{ SIOCONF_MODE, 0x02 },
{ SIOCONF_PRIMARY_INT, 0x04 },
{ SIOCONF_ACTIVATE, 0x01 },
/* tty1 */
{ SIOCONF_DEVNUM, 0x05 },
{ SIOCONF_BASE_HIGH, 0x02 },
{ SIOCONF_BASE_LOW, 0xf8 },
{ SIOCONF_MODE, 0x02 },
{ SIOCONF_PRIMARY_INT, 0x03 },
{ SIOCONF_ACTIVATE, 0x01 },
};
void malta_superio_init(void)
{
unsigned i;
/* enter config state */
outb(SIOCONF_ENTER_SETUP, SIO_CONF_PORT);
/* configure peripherals */
for (i = 0; i < ARRAY_SIZE(sio_config); i++) {
outb(sio_config[i].key, SIO_CONF_PORT);
outb(sio_config[i].data, SIO_DATA_PORT);
}
/* exit config state */
outb(SIOCONF_EXIT_SETUP, SIO_CONF_PORT);
}
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