Moves the inclusion of the superio early code from romstage.c in 
the mainboard directory to Makefile.inc in the superio directory.
Adapted amd/persimmon board to fit this model.

Designed to serve as an example on how to deal with all superio
#include "*.c" directives in romstage.c

Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
---
Here's what I did to my svn:
svn add src/include/superio
svn mv src/superio/fintek/f81865/f81865f_early_serial.c src/superio/fintek/f81865/early_serial.c

Index: src/include/superio/early_serial.h
===================================================================
--- src/include/superio/early_serial.h	(revision 0)
+++ src/include/superio/early_serial.h	(revision 0)
@@ -0,0 +1,39 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2011  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 3 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/>.
+ */
+#ifndef SUPERIO_EARLY_SERIAL_H
+#define SUPERIO_EARLY_SERIAL_H
+
+#include <arch/romcc_io.h>
+#include <stdint.h>
+
+/**
+ * \brief Pre-RAM (romstage) serial port initialization
+ * 
+ * Initializes the serial port early in the boot sequence.
+ * \n
+ * The actual definition is in each superio chip's early_serial.c.
+ * early_serial.c should be included by the Makefile.inc of the respective
+ * superio See \n
+ * src/superio/fintek/f81865/Makefile.inc \n
+ * for details
+ * 
+ */
+void superio_enable_early_serial(device_t dev, u16 iobase);
+
+#endif /*  SUPERIO_EARLY_SERIAL_H */
\ No newline at end of file
Index: src/superio/fintek/f81865f/f81865f_early_serial.c
===================================================================
--- src/superio/fintek/f81865f/f81865f_early_serial.c	(revision 6380)
+++ src/superio/fintek/f81865f/f81865f_early_serial.c	(working copy)
@@ -1,47 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright (C) 2011 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; 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, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
- */
-
-/* Pre-RAM driver for the Fintek F81865F/FG Super I/O chip. */
-
-#include <arch/romcc_io.h>
-#include "f81865f.h"
-
-static void pnp_enter_conf_state(device_t dev)
-{
-	u16 port = dev >> 8;
-	outb(0x87, port);
-	outb(0x87, port);
-}
-
-static void pnp_exit_conf_state(device_t dev)
-{
-	u16 port = dev >> 8;
-	outb(0xaa, port);
-}
-
-static void f81865f_enable_serial(device_t dev, u16 iobase)
-{
-	pnp_enter_conf_state(dev);
-	pnp_set_logical_device(dev);
-	pnp_set_enable(dev, 0);
-	pnp_set_iobase(dev, PNP_IDX_IO0, iobase);
-	pnp_set_enable(dev, 1);
-	pnp_exit_conf_state(dev);
-}
Index: src/superio/fintek/f81865f/Makefile.inc
===================================================================
--- src/superio/fintek/f81865f/Makefile.inc	(revision 6380)
+++ src/superio/fintek/f81865f/Makefile.inc	(working copy)
@@ -2,6 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ## Copyright (C) 2011 Advanced Micro Devices, Inc.
+## Copyright (C) 2011 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
@@ -19,3 +20,8 @@
 ##
 
 ramstage-$(CONFIG_SUPERIO_FINTEK_F81865F) += superio.c
+
+# Include early_serial.c automatically in romstage, so that including it in
+# romstage.c as a "#include .c" is no longer necesarry
+
+romstage-$(CONFIG_SUPERIO_FINTEK_F81865F) += early_serial.c
Index: src/superio/fintek/f81865f/early_serial.c
===================================================================
--- src/superio/fintek/f81865f/early_serial.c	(revision 6380)
+++ src/superio/fintek/f81865f/early_serial.c	(working copy)
@@ -19,10 +19,14 @@
  */
 
 /* Pre-RAM driver for the Fintek F81865F/FG Super I/O chip. */
+#include <arch/io.h>	/* <== Must be included before early_serial.h */
+#include <superio/early_serial.h>
 
-#include <arch/romcc_io.h>
+#include <device/pnp_def.h>
+
 #include "f81865f.h"
 
+
 static void pnp_enter_conf_state(device_t dev)
 {
 	u16 port = dev >> 8;
@@ -36,7 +40,7 @@
 	outb(0xaa, port);
 }
 
-static void f81865f_enable_serial(device_t dev, u16 iobase)
+void superio_enable_early_serial(device_t dev, u16 iobase)
 {
 	pnp_enter_conf_state(dev);
 	pnp_set_logical_device(dev);
Index: src/mainboard/amd/persimmon/romstage.c
===================================================================
--- src/mainboard/amd/persimmon/romstage.c	(revision 6380)
+++ src/mainboard/amd/persimmon/romstage.c	(working copy)
@@ -2,6 +2,7 @@
  * This file is part of the coreboot project.
  *
  * Copyright (C) 2011 Advanced Micro Devices, Inc.
+ * Copyright (C) 2011 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
@@ -31,7 +32,8 @@
 #include <console/loglevel.h>
 #include "agesawrapper.h"
 #include "cpu/x86/bist.h"
-#include "superio/fintek/f81865f/f81865f_early_serial.c"
+#include <superio/early_serial.h>
+#include "superio/fintek/f81865f/f81865f.h"
 #include "cpu/x86/lapic/boot_cpu.c"
 #include "pc80/i8254.c"
 #include "pc80/i8259.c"
@@ -52,7 +54,7 @@
     sb_poweron_init();
 
     post_code(0x31);
-    f81865f_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
+    superio_enable_early_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
     uart_init();
     console_init();
   }
Index: README
===================================================================
--- README	(revision 6380)
+++ README	(working copy)
@@ -1,3 +1,6 @@
+svn add src/include/superio
+svn mv src/superio/fintek/f81865/f81865f_early_serial.c src/superio/fintek/f81865/early_serial.c
+
 -------------------------------------------------------------------------------
 coreboot README
 -------------------------------------------------------------------------------
