src/superio/common/conf_mode.c

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  * Copyright (C) 2013 Nico Huber <nico.h@gmx.de>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; version 2 of the License.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  */
  15
  16 #include <arch/io.h>
  17 #include <device/device.h>
  18 #include <superio/conf_mode.h>
  19
  20 /* Common enter/exit implementations */
  21
  22 void pnp_enter_conf_mode_55(struct device *dev)
  23 {
  24         outb(0x55, dev->path.pnp.port);
  25 }
  26
  27 void pnp_enter_conf_mode_6767(struct device *dev)
  28 {
  29         outb(0x67, dev->path.pnp.port);
  30         outb(0x67, dev->path.pnp.port);
  31 }
  32
  33 void pnp_enter_conf_mode_7777(struct device *dev)
  34 {
  35         outb(0x77, dev->path.pnp.port);
  36         outb(0x77, dev->path.pnp.port);
  37 }
  38
  39 void pnp_enter_conf_mode_8787(struct device *dev)
  40 {
  41         outb(0x87, dev->path.pnp.port);
  42         outb(0x87, dev->path.pnp.port);
  43 }
  44
  45 void pnp_enter_conf_mode_a0a0(struct device *dev)
  46 {
  47         outb(0xa0, dev->path.pnp.port);
  48         outb(0xa0, dev->path.pnp.port);
  49 }
  50
  51 void pnp_exit_conf_mode_aa(struct device *dev)
  52 {
  53         outb(0xaa, dev->path.pnp.port);
  54 }
  55
  56 void pnp_enter_conf_mode_870155aa(struct device *dev)
  57 {
  58         outb(0x87, dev->path.pnp.port);
  59         outb(0x01, dev->path.pnp.port);
  60         outb(0x55, dev->path.pnp.port);
  61
  62         if (dev->path.pnp.port == 0x4e)
  63                 outb(0xaa, dev->path.pnp.port);
  64         else
  65                 outb(0x55, dev->path.pnp.port);
  66 }
  67
  68 void pnp_exit_conf_mode_0202(struct device *dev)
  69 {
  70         outb(0x02, dev->path.pnp.port);
  71         outb(0x02, dev->path.pnp.port + 1);
  72 }
  73
  74
  75 const struct pnp_mode_ops pnp_conf_mode_55_aa = {
  76         .enter_conf_mode = pnp_enter_conf_mode_55,
  77         .exit_conf_mode  = pnp_exit_conf_mode_aa,
  78 };
  79
  80 const struct pnp_mode_ops pnp_conf_mode_6767_aa = {
  81         .enter_conf_mode = pnp_enter_conf_mode_6767,
  82         .exit_conf_mode  = pnp_exit_conf_mode_aa,
  83 };
  84
  85 const struct pnp_mode_ops pnp_conf_mode_7777_aa = {
  86         .enter_conf_mode = pnp_enter_conf_mode_7777,
  87         .exit_conf_mode  = pnp_exit_conf_mode_aa,
  88 };
  89
  90 const struct pnp_mode_ops pnp_conf_mode_8787_aa = {
  91         .enter_conf_mode = pnp_enter_conf_mode_8787,
  92         .exit_conf_mode  = pnp_exit_conf_mode_aa,
  93 };
  94
  95 const struct pnp_mode_ops pnp_conf_mode_a0a0_aa = {
  96         .enter_conf_mode = pnp_enter_conf_mode_a0a0,
  97         .exit_conf_mode  = pnp_exit_conf_mode_aa,
  98 };
  99
 100 const struct pnp_mode_ops pnp_conf_mode_870155_aa = {
 101         .enter_conf_mode = pnp_enter_conf_mode_870155aa,
 102         .exit_conf_mode  = pnp_exit_conf_mode_0202,
 103 };