| Alexandru Gagniuc | ee2bc27 | 2013-05-21 12:35:08 -0500 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
| 4 | * Copyright (C) 2013 Alexandru Gagniuc <mr.nuke.me@gmail.com> |
| 5 | * |
| 6 | * This program is free software: you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation, either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| Alexandru Gagniuc | ee2bc27 | 2013-05-21 12:35:08 -0500 | [diff] [blame] | 15 | */ |
| 16 | |
| 17 | /** |
| Martin Roth | 4934818 | 2016-07-06 10:17:19 -0600 | [diff] [blame] | 18 | * @file via_early_smbus.h |
| Alexandru Gagniuc | ee2bc27 | 2013-05-21 12:35:08 -0500 | [diff] [blame] | 19 | * |
| 20 | * This file contains generic definitions used in VIA SMBus controllers. |
| 21 | * |
| 22 | * Functions defined in device/early/smbus.h are each implemented in a separate |
| 23 | * early_smbus_[func_name].c file. This makes it possible to override any of |
| Martin Roth | 84422b1 | 2014-12-09 13:49:05 -0700 | [diff] [blame] | 24 | * these functions by not including them in your build, via Makefile.c. This is |
| Alexandru Gagniuc | ee2bc27 | 2013-05-21 12:35:08 -0500 | [diff] [blame] | 25 | * useful when there is a need to work around chipset bugs. |
| 26 | * |
| 27 | * These implementations work with most via chipsets. Any VIA port should try |
| 28 | * to use these. Makefile.inc needs to be adapted to link against the files |
| 29 | * providing SMBus functionality: |
| 30 | * @code |
| 31 | * romstage-y += ./../../../southbridge/via/common/early_smbus_func.c |
| 32 | * @endcode |
| 33 | */ |
| 34 | |
| 35 | /** |
| 36 | * \brief SMBus IO ports in relation to the base IO port |
| 37 | */ |
| 38 | #define SMBHSTSTAT(base) ((u16)base + 0x0) |
| 39 | #define SMBSLVSTAT(base) ((u16)base + 0x1) |
| 40 | #define SMBHSTCTL(base) ((u16)base + 0x2) |
| 41 | #define SMBHSTCMD(base) ((u16)base + 0x3) |
| 42 | #define SMBXMITADD(base) ((u16)base + 0x4) |
| 43 | #define SMBHSTDAT0(base) ((u16)base + 0x5) |
| 44 | #define SMBHSTDAT1(base) ((u16)base + 0x6) |
| 45 | #define SMBBLKDAT(base) ((u16)base + 0x7) |
| 46 | #define SMBSLVCTL(base) ((u16)base + 0x8) |
| 47 | #define SMBTRNSADD(base) ((u16)base + 0x9) |
| 48 | #define SMBSLVDATA (base) ((u16)base + 0xa) |
| 49 | |
| 50 | #define SMBUS_TIMEOUT (100*1000*10) |
| 51 | |
| 52 | #include <device/early_smbus.h> |
| 53 | #include <arch/io.h> |