| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2010 Tobias Diedrich <ranma+coreboot@tdiedrich.de> |
| * |
| * 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; version 2 of the License. |
| * |
| * 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. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /* i440bx Northbridge */ |
| Device (NB) |
| { |
| Name(_ADR, 0x00000000) |
| OperationRegion(PCIC, PCI_Config, 0x00, 0x100) |
| } |
| |
| Field (NB.PCIC, AnyAcc, NoLock, Preserve) |
| { |
| Offset (0x67), // DRB7 |
| DRB7, 8, |
| } |
| |
| Method(TOM1, 0) { |
| /* Multiply by 8MB to get TOM */ |
| Return(ShiftLeft(DRB7, 23)) |
| } |
| |
| Method(_CRS, 0) { |
| Name(TMP, ResourceTemplate() { |
| WordBusNumber(ResourceProducer, MinFixed, MaxFixed, PosDecode, |
| 0x0000, // Granularity |
| 0x0000, // Range Minimum |
| 0x00FF, // Range Maximum |
| 0x0000, // Translation Offset |
| 0x0100, // Length |
| ,, |
| ) |
| IO(Decode16, 0x0CF8, 0x0CF8, 1, 8) |
| |
| WORDIO(ResourceProducer, MinFixed, MaxFixed, PosDecode, EntireRange, |
| 0x0000, /* address granularity */ |
| 0x0000, /* range minimum */ |
| 0x0CF7, /* range maximum */ |
| 0x0000, /* translation */ |
| 0x0CF8 /* length */ |
| ) |
| |
| WORDIO(ResourceProducer, MinFixed, MaxFixed, PosDecode, EntireRange, |
| 0x0000, /* address granularity */ |
| 0x0D00, /* range minimum */ |
| 0xFFFF, /* range maximum */ |
| 0x0000, /* translation */ |
| 0xF300 /* length */ |
| ) |
| |
| /* memory space for PCI BARs below 4GB */ |
| Memory32Fixed(ReadOnly, 0x00000000, 0x00000000, MMIO) |
| }) |
| CreateDWordField(TMP, MMIO._BAS, MM1B) |
| CreateDWordField(TMP, MMIO._LEN, MM1L) |
| /* |
| * Declare memory between TOM1 and 4GB as available |
| * for PCI MMIO. |
| * |
| * Use ShiftLeft to avoid 64bit constant (for XP). |
| * This will work even if the OS does 32bit arithmetic, as |
| * 32bit (0x00000000 - TOM1) will wrap and give the same |
| * result as 64bit (0x100000000 - TOM1). |
| */ |
| Store(TOM1, MM1B) |
| ShiftLeft(0x10000000, 4, Local0) |
| Subtract(Local0, TOM1, Local0) |
| Store(Local0, MM1L) |
| |
| Return(TMP) |
| } |
