blob: 5e49b818acea54ce9ae6c9fc456edd363fc1b464 [file] [log] [blame]
* This file is part of the coreboot project.
* Copyright (C) 2006 Uwe Hermann <>
* Copyright (C) 2009 Maciej Pijanka <>
* 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
* 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
* Datasheet:
* - Name: Intel 440LX AGPset: 82443LX Host Bridge/Controller
* - PDF: 29056402.pdf
* Host-to-PCI Bridge Registers.
* The values in parenthesis are the default values as per datasheet.
* Any addresses between 0x00 and 0xff not listed below are either
* i didnt listed every register that IS implemented, just usefull ones
* -- Maciej `agaran` Pijanka
* Reserved or Intel Reserved and should not be touched.
#define APBASE 0x34 /* Aperture Base Address (0x00000008) */
#define PACCFG 0x50 /* 440LX PAC Configuration Register (0s00_s000_0000_0s00b) */
#define DBC 0x53 /* DRAM Row Type Register (0x83) */
#define DRT 0x55 /* DRAM Row Type Register (0x0000) */
#define DRAMC 0x57 /* DRAM Control (0x01) */
#define DRAMT 0x58 /* DRAM Timing (0x00) */
#define PAM 0x59 /* Programmable Attribute Map, 7 registers (0x00). */
#define DRB 0x60 /* DRAM Row Boundary, 8 registers (0x01). */
#define FDHC 0x68 /* Fixed SDRAM Hole Control (0x00). */
#define DRAMXC 0x6A /* Dram Extended Control Register (0x0000) */
#define MBSC 0x6C /* Memory Buffer Strength Control: (0x55555555) */
#define SMRAM 0x72 /* System Management RAM Control (0x02). */
#define ERRCMD 0x90 /* Error Command Register (0x80). */
#define ERRSTS0 0x91 /* Error Status (0x0000). */
#define ERRSTS1 0x92 /* Error Status (0x0000). */
// TODO: AGP stuff.
/* For convenience: */
#define DRB0 0x60
#define DRB1 0x61
#define DRB2 0x62
#define DRB3 0x63
#define DRB4 0x64
#define DRB5 0x65
#define DRB6 0x66
#define DRB7 0x67
#define PAM0 0x59
#define PAM1 0x5a
#define PAM2 0x5b
#define PAM3 0x5c
#define PAM4 0x5d
#define PAM5 0x5e
#define PAM6 0x5f