1*a257f626SPaul Burton /* 2*a257f626SPaul Burton * Copyright (C) 2013 Imagination Technologies 3*a257f626SPaul Burton * Author: Paul Burton <paul.burton@imgtec.com> 4*a257f626SPaul Burton * 5*a257f626SPaul Burton * Setup code for the FDC37M817 super I/O controller 6*a257f626SPaul Burton * 7*a257f626SPaul Burton * SPDX-License-Identifier: GPL-2.0+ 8*a257f626SPaul Burton */ 9*a257f626SPaul Burton 10*a257f626SPaul Burton #include <common.h> 11*a257f626SPaul Burton #include <asm/io.h> 12*a257f626SPaul Burton 13*a257f626SPaul Burton #define SIO_CONF_PORT 0x3f0 14*a257f626SPaul Burton #define SIO_DATA_PORT 0x3f1 15*a257f626SPaul Burton 16*a257f626SPaul Burton enum sio_conf_key { 17*a257f626SPaul Burton SIOCONF_DEVNUM = 0x07, 18*a257f626SPaul Burton SIOCONF_ACTIVATE = 0x30, 19*a257f626SPaul Burton SIOCONF_ENTER_SETUP = 0x55, 20*a257f626SPaul Burton SIOCONF_BASE_HIGH = 0x60, 21*a257f626SPaul Burton SIOCONF_BASE_LOW = 0x61, 22*a257f626SPaul Burton SIOCONF_PRIMARY_INT = 0x70, 23*a257f626SPaul Burton SIOCONF_EXIT_SETUP = 0xaa, 24*a257f626SPaul Burton SIOCONF_MODE = 0xf0, 25*a257f626SPaul Burton }; 26*a257f626SPaul Burton 27*a257f626SPaul Burton static struct { 28*a257f626SPaul Burton u8 key; 29*a257f626SPaul Burton u8 data; 30*a257f626SPaul Burton } sio_config[] = { 31*a257f626SPaul Burton /* tty0 */ 32*a257f626SPaul Burton { SIOCONF_DEVNUM, 0x04 }, 33*a257f626SPaul Burton { SIOCONF_BASE_HIGH, 0x03 }, 34*a257f626SPaul Burton { SIOCONF_BASE_LOW, 0xf8 }, 35*a257f626SPaul Burton { SIOCONF_MODE, 0x02 }, 36*a257f626SPaul Burton { SIOCONF_PRIMARY_INT, 0x04 }, 37*a257f626SPaul Burton { SIOCONF_ACTIVATE, 0x01 }, 38*a257f626SPaul Burton 39*a257f626SPaul Burton /* tty1 */ 40*a257f626SPaul Burton { SIOCONF_DEVNUM, 0x05 }, 41*a257f626SPaul Burton { SIOCONF_BASE_HIGH, 0x02 }, 42*a257f626SPaul Burton { SIOCONF_BASE_LOW, 0xf8 }, 43*a257f626SPaul Burton { SIOCONF_MODE, 0x02 }, 44*a257f626SPaul Burton { SIOCONF_PRIMARY_INT, 0x03 }, 45*a257f626SPaul Burton { SIOCONF_ACTIVATE, 0x01 }, 46*a257f626SPaul Burton }; 47*a257f626SPaul Burton 48*a257f626SPaul Burton void malta_superio_init(void *io_base) 49*a257f626SPaul Burton { 50*a257f626SPaul Burton unsigned i; 51*a257f626SPaul Burton 52*a257f626SPaul Burton /* enter config state */ 53*a257f626SPaul Burton writeb(SIOCONF_ENTER_SETUP, io_base + SIO_CONF_PORT); 54*a257f626SPaul Burton 55*a257f626SPaul Burton /* configure peripherals */ 56*a257f626SPaul Burton for (i = 0; i < ARRAY_SIZE(sio_config); i++) { 57*a257f626SPaul Burton writeb(sio_config[i].key, io_base + SIO_CONF_PORT); 58*a257f626SPaul Burton writeb(sio_config[i].data, io_base + SIO_DATA_PORT); 59*a257f626SPaul Burton } 60*a257f626SPaul Burton 61*a257f626SPaul Burton /* exit config state */ 62*a257f626SPaul Burton writeb(SIOCONF_EXIT_SETUP, io_base + SIO_CONF_PORT); 63*a257f626SPaul Burton } 64