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>

3 files changed, 92 insertions, 0 deletions

diff --git a/src/southbridge/amd/cimx/Makefile.inc b/src/southbridge/amd/cimx/Makefile.inc
index 80c6378c0d..a9ea8b9d18 100644
--- a/src/southbridge/amd/cimx/Makefile.inc
+++ b/src/southbridge/amd/cimx/Makefile.inc
@@ -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
diff --git a/src/southbridge/amd/cimx/cimx_util.c b/src/southbridge/amd/cimx/cimx_util.c
new file mode 100755
index 0000000000..ca4c86a2d4
--- /dev/null
+++ b/src/southbridge/amd/cimx/cimx_util.c
@@ -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);
+}
diff --git a/src/southbridge/amd/cimx/cimx_util.h b/src/southbridge/amd/cimx/cimx_util.h
new file mode 100755
index 0000000000..4ef534c0c2
--- /dev/null
+++ b/src/southbridge/amd/cimx/cimx_util.h
@@ -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 */