This patch add rudimentary support for the superio functionality of

the Serverengines Pilot BMC chip. Necessary to get serial out on the
HP DL145 G3.

Signed-off-by: Mondrian nuessle <nuessle@uni-hd.de>
Acked-by: Samuel Verstraete <samuel.verstraete@gmail.com>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4183 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 58 insertions, 0 deletions

diff --git a/src/superio/serverengines/pilot/pilot_early_serial.c b/src/superio/serverengines/pilot/pilot_early_serial.c
new file mode 100644
index 0000000000..934e8b113f
--- /dev/null
+++ b/src/superio/serverengines/pilot/pilot_early_serial.c
@@ -0,0 +1,58 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2009 University of Heidelberg
+ * Written by Mondrian Nuessle <nuessle@uni-heidelberg.de> for University of Heidelberg
+ *
+ * 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
+ */
+
+/* PILOT SuperIO is only based on LPC observation done on factory system. */
+
+#include <arch/romcc_io.h>
+#include "pilot.h"
+
+/* pilot uses 0x5A/0xA5 pattern to actiavte deactivate config access */
+static inline void pnp_enter_ext_func_mode(device_t dev)
+{
+	unsigned port = dev>>8;
+	outb(0x5A, port);
+}
+
+static void pnp_exit_ext_func_mode(device_t dev)
+{
+	unsigned port = dev>>8;
+	outb(0xA5, port);
+}
+
+/* serial config is failry standard procedure */
+static void pilot_enable_serial(device_t dev, unsigned iobase)
+{
+	pnp_enter_ext_func_mode(dev);
+	pnp_set_logical_device(dev);
+	pnp_set_iobase(dev, PNP_IDX_IO0, iobase);
+	pnp_set_enable(dev, 1);
+	pnp_exit_ext_func_mode(dev);
+}
+
+static void pilot_disable_serial(device_t dev)
+{
+	pnp_enter_ext_func_mode(dev);
+	pnp_set_logical_device(dev);
+	pnp_set_iobase(dev, PNP_IDX_IO0, 0x00);
+	pnp_set_enable(dev, 0);
+	pnp_exit_ext_func_mode(dev);
+}
+