diff options
Diffstat (limited to 'src/southbridge/via/common/via_early_smbus.h')
| -rw-r--r-- | src/southbridge/via/common/via_early_smbus.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/src/southbridge/via/common/via_early_smbus.h b/src/southbridge/via/common/via_early_smbus.h new file mode 100644 index 0000000000..aca920b470 --- /dev/null +++ b/src/southbridge/via/common/via_early_smbus.h @@ -0,0 +1,56 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2013 Alexandru Gagniuc <mr.nuke.me@gmail.com> + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +/** + * @file via_early_sambus.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 yout 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. Makefile.inc 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> |