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Add simple PMIO & PMIO2 read/write routines to CIMX wrapper 

These are the PMIO & PMIO2 read & write routines from
src/southbridge/amd/sb800/sb800.c & sb800.h for use in the cimx
tree.  Currently most platforms using CIMX are calling WritePMIO()
directly from the src/vendorcode/amd/cimx/sbX00 directories
instead of using a wrapper function.
These functions only do byte reads & writes.

Change-Id: I881a6e2d4ddbba3dbdf4dd33e06313fe88b3682a
Signed-off-by: Martin L Roth <martin@se-eng.com>
Reviewed-on: http://review.coreboot.org/981
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
This commit is contained in:
Martin Roth 2012-04-28 10:25:20 -06:00 committed by Marc Jones
parent 4781800a66
commit 7b860ed45e
3 changed files with 92 additions and 0 deletions
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4
src/southbridge/amd/cimx/Makefile.inc
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@ -19,3 +19,7 @@
subdirs-$(CONFIG_SOUTHBRIDGE_AMD_CIMX_SB700) += sb700
subdirs-$(CONFIG_SOUTHBRIDGE_AMD_CIMX_SB800) += sb800
subdirs-$(CONFIG_SOUTHBRIDGE_AMD_CIMX_SB900) += sb900
romstage-y += cimx_util.c
ramstage-y += cimx_util.c

52
src/southbridge/amd/cimx/cimx_util.c Executable file
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@ -0,0 +1,52 @@
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2010 Advanced Micro Devices, Inc.
*
* 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
*/
#include <arch/io.h>
#include "cimx_util.h"
static void pmio_write_index(u16 port_base, u8 reg, u8 value)
{
outb(reg, port_base);
outb(value, port_base + 1);
}
static u8 pmio_read_index(u16 port_base, u8 reg)
{
outb(reg, port_base);
return inb(port_base + 1);
}
void pm_iowrite(u8 reg, u8 value)
{
pmio_write_index(PM_INDEX, reg, value);
}
u8 pm_ioread(u8 reg)
{
return pmio_read_index(PM_INDEX, reg);
}
void pm2_iowrite(u8 reg, u8 value)
{
pmio_write_index(PM2_INDEX, reg, value);
}
u8 pm2_ioread(u8 reg)
{
return pmio_read_index(PM2_INDEX, reg);
}

36
src/southbridge/amd/cimx/cimx_util.h Executable file
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@ -0,0 +1,36 @@
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2010 Advanced Micro Devices, Inc.
*
* 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
*/
#ifndef CIMX_UTIL_H
#define CIMX_UTIL_H
#include <stdint.h>
/* Power management index/data registers */
#define PM_INDEX 0xcd6
#define PM_DATA 0xcd7
#define PM2_INDEX 0xcd0
#define PM2_DATA 0xcd1
void pm_iowrite(u8 reg, u8 value);
u8 pm_ioread(u8 reg);
void pm2_iowrite(u8 reg, u8 value);
u8 pm2_ioread(u8 reg);
#endif /* CIMX_UTIL_H */