Morgan Tsai | 1602dd5 | 2007-10-29 21:00:14 +0000 | [diff] [blame] | 1 | /* |
Stefan Reinauer | 7e61e45 | 2008-01-18 10:35:56 +0000 | [diff] [blame] | 2 | * This file is part of the coreboot project. |
Morgan Tsai | 1602dd5 | 2007-10-29 21:00:14 +0000 | [diff] [blame] | 3 | * |
| 4 | * Copyright (C) 2007 AMD |
| 5 | * Written by Yinghai Lu <yinghai.lu@amd.com> for AMD. |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
Morgan Tsai | 1602dd5 | 2007-10-29 21:00:14 +0000 | [diff] [blame] | 16 | */ |
| 17 | |
Stefan Reinauer | eea66b7 | 2010-04-07 15:32:52 +0000 | [diff] [blame] | 18 | #include <reset.h> |
| 19 | |
Morgan Tsai | 1602dd5 | 2007-10-29 21:00:14 +0000 | [diff] [blame] | 20 | static unsigned get_sbdn(unsigned bus) |
| 21 | { |
| 22 | device_t dev; |
| 23 | |
Carl-Daniel Hailfinger | a358892 | 2007-11-05 22:21:27 +0000 | [diff] [blame] | 24 | /* Find the device. */ |
Morgan Tsai | 1602dd5 | 2007-10-29 21:00:14 +0000 | [diff] [blame] | 25 | dev = pci_locate_device_on_bus( |
Morgan Tsai | 31e805d | 2007-11-14 01:34:02 +0000 | [diff] [blame] | 26 | PCI_ID(PCI_VENDOR_ID_SIS, PCI_DEVICE_ID_SIS_SIS761), |
Morgan Tsai | 1602dd5 | 2007-10-29 21:00:14 +0000 | [diff] [blame] | 27 | bus); |
| 28 | |
| 29 | return (dev>>15) & 0x1f; |
Morgan Tsai | 1602dd5 | 2007-10-29 21:00:14 +0000 | [diff] [blame] | 30 | } |
| 31 | |
Stefan Reinauer | eea66b7 | 2010-04-07 15:32:52 +0000 | [diff] [blame] | 32 | void hard_reset(void) |
Morgan Tsai | 1602dd5 | 2007-10-29 21:00:14 +0000 | [diff] [blame] | 33 | { |
| 34 | set_bios_reset(); |
| 35 | |
| 36 | /* full reset */ |
| 37 | outb(0x0a, 0x0cf9); |
| 38 | outb(0x0e, 0x0cf9); |
| 39 | } |
Carl-Daniel Hailfinger | a358892 | 2007-11-05 22:21:27 +0000 | [diff] [blame] | 40 | |
Morgan Tsai | 1602dd5 | 2007-10-29 21:00:14 +0000 | [diff] [blame] | 41 | static void enable_fid_change_on_sb(unsigned sbbusn, unsigned sbdn) |
| 42 | { |
Stefan Reinauer | eea66b7 | 2010-04-07 15:32:52 +0000 | [diff] [blame] | 43 | /* default value for sis966 is good */ |
Morgan Tsai | 1602dd5 | 2007-10-29 21:00:14 +0000 | [diff] [blame] | 44 | /* set VFSMAF ( VID/FID System Management Action Field) to 2 */ |
Morgan Tsai | 1602dd5 | 2007-10-29 21:00:14 +0000 | [diff] [blame] | 45 | } |
| 46 | |
Stefan Reinauer | eea66b7 | 2010-04-07 15:32:52 +0000 | [diff] [blame] | 47 | void soft_reset(void) |
Morgan Tsai | 1602dd5 | 2007-10-29 21:00:14 +0000 | [diff] [blame] | 48 | { |
| 49 | set_bios_reset(); |
Morgan Tsai | 218c265 | 2007-11-02 16:09:58 +0000 | [diff] [blame] | 50 | |
Morgan Tsai | 1602dd5 | 2007-10-29 21:00:14 +0000 | [diff] [blame] | 51 | /* link reset */ |
| 52 | outb(0x02, 0x0cf9); |
| 53 | outb(0x06, 0x0cf9); |
Morgan Tsai | 218c265 | 2007-11-02 16:09:58 +0000 | [diff] [blame] | 54 | |
Morgan Tsai | 1602dd5 | 2007-10-29 21:00:14 +0000 | [diff] [blame] | 55 | } |