| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2007 AMD |
| * Written by Yinghai Lu <yinghai.lu@amd.com> for AMD. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #include <reset.h> |
| #include "mcp55.h" |
| |
| static unsigned get_sbdn(unsigned bus) |
| { |
| device_t dev; |
| |
| /* Find the device. */ |
| dev = pci_locate_device_on_bus(PCI_ID(PCI_VENDOR_ID_NVIDIA, |
| PCI_DEVICE_ID_NVIDIA_MCP55_HT), bus); |
| |
| return (dev >> 15) & 0x1f; |
| } |
| |
| void soft_reset(void) |
| { |
| set_bios_reset(); |
| /* link reset */ |
| outb(0x02, 0x0cf9); |
| outb(0x06, 0x0cf9); |
| } |
| |
| void hard_reset(void) |
| { |
| set_bios_reset(); |
| |
| /* full reset */ |
| outb(0x0a, 0x0cf9); |
| outb(0x0e, 0x0cf9); |
| } |
| |
| void enable_fid_change_on_sb(unsigned sbbusn, unsigned sbdn) |
| { |
| /* The default value for MCP55 is good. */ |
| /* Set VFSMAF (VID/FID System Management Action Field) to 2. */ |
| } |