blob: 5f66822b884df5c4776eeb1470129ccfad9b9856 [file] [log] [blame]
* This file is part of the coreboot project.
* Copyright (C) 2013 Alexandru Gagniuc <>
* 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.
* @file via_early_smbus.h
* This file contains generic definitions used in VIA SMBus controllers.
* Functions defined in device/early/smbus.h are each implemented in a separate
* early_smbus_[func_name].c file. This makes it possible to override any of
* these functions by not including them in your build, via Makefile.c. This is
* useful when there is a need to work around chipset bugs.
* These implementations work with most via chipsets. Any VIA port should try
* to use these. needs to be adapted to link against the files
* providing SMBus functionality:
* @code
* romstage-y += ./../../../southbridge/via/common/early_smbus_func.c
* @endcode
* \brief SMBus IO ports in relation to the base IO port
#define SMBHSTSTAT(base) ((u16)base + 0x0)
#define SMBSLVSTAT(base) ((u16)base + 0x1)
#define SMBHSTCTL(base) ((u16)base + 0x2)
#define SMBHSTCMD(base) ((u16)base + 0x3)
#define SMBXMITADD(base) ((u16)base + 0x4)
#define SMBHSTDAT0(base) ((u16)base + 0x5)
#define SMBHSTDAT1(base) ((u16)base + 0x6)
#define SMBBLKDAT(base) ((u16)base + 0x7)
#define SMBSLVCTL(base) ((u16)base + 0x8)
#define SMBTRNSADD(base) ((u16)base + 0x9)
#define SMBSLVDATA (base) ((u16)base + 0xa)
#define SMBUS_TIMEOUT (100*1000*10)
#include <device/early_smbus.h>
#include <arch/io.h>