This patch implements support for the Intel 3100 integrated SuperIO and UART.

Signed-off-by: Ed Swierk <eswierk@arastra.com>                                                                                                                                               
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>                                                                                                                                                   
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3156 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

5 files changed, 246 insertions, 0 deletions

diff --git a/src/superio/intel/i3100/Config.lb b/src/superio/intel/i3100/Config.lb
new file mode 100644
index 0000000..7349617
--- /dev/null
+++ b/src/superio/intel/i3100/Config.lb
@@ -0,0 +1,23 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2008 Arastra, 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
+##
+
+config chip.h
+object superio.o
+
diff --git a/src/superio/intel/i3100/chip.h b/src/superio/intel/i3100/chip.h
new file mode 100644
index 0000000..e6666e5
--- /dev/null
+++ b/src/superio/intel/i3100/chip.h
@@ -0,0 +1,33 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2008 Arastra, 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
+ */
+
+#ifndef SUPERIO_INTEL_I3100_CHIP_H
+#define SUPERIO_INTEL_I3100_CHIP_H
+
+#include <device/device.h>
+#include <uart8250.h>
+
+extern struct chip_operations superio_intel_i3100_ops;
+
+struct superio_intel_i3100_config {
+	struct uart8250 com1, com2;
+};
+
+#endif
diff --git a/src/superio/intel/i3100/i3100.h b/src/superio/intel/i3100/i3100.h
new file mode 100644
index 0000000..94698a8
--- /dev/null
+++ b/src/superio/intel/i3100/i3100.h
@@ -0,0 +1,30 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2008 Arastra, 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
+ */
+
+/* Datasheet: http://www.intel.com/design/intarch/datashts/313458.htm */
+
+#ifndef SUPERIO_INTEL_I3100_I3100_H
+#define SUPERIO_INTEL_I3100_I3100_H
+
+#define I3100_SP1 0x04 /* Com1 */
+#define I3100_SP2 0x05 /* Com2 */
+#define I3100_WDT 0x06 /* Watchdog timer */
+
+#endif
diff --git a/src/superio/intel/i3100/i3100_early_serial.c b/src/superio/intel/i3100/i3100_early_serial.c
new file mode 100644
index 0000000..a52b852
--- /dev/null
+++ b/src/superio/intel/i3100/i3100_early_serial.c
@@ -0,0 +1,52 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2008 Arastra, 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
+ */
+
+#include <arch/romcc_io.h>
+#include "i3100.h"
+
+static void i3100_sio_write(u8 port, u8 ldn, u8 index,
+			    u8 value)
+{
+	outb(0x07, port);
+	outb(ldn, port + 1);
+	outb(index, port);
+	outb(value, port + 1);
+}
+
+static void i3100_enable_serial(u8 port, u8 ldn, u16 iobase)
+{
+	/* Enter configuration state */
+	outb(0x80, port);
+	outb(0x86, port);
+
+	/* Enable serial port */
+	i3100_sio_write(port, ldn, 0x30, 0x01);
+
+	/* Set serial port IO region */
+	i3100_sio_write(port, ldn, 0x60, (iobase >> 8) & 0xff);
+	i3100_sio_write(port, ldn, 0x61, iobase & 0xff);
+
+	/* Enable device interrupts, set UART_CLK predivide to 26 */
+	i3100_sio_write(port, 0x00, 0x29, 0x0b);
+
+	/* Exit configuration state */
+	outb(0x68, port);
+	outb(0x08, port);
+}
diff --git a/src/superio/intel/i3100/superio.c b/src/superio/intel/i3100/superio.c
new file mode 100644
index 0000000..340fb00
--- /dev/null
+++ b/src/superio/intel/i3100/superio.c
@@ -0,0 +1,108 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2008 Arastra, 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
+ */
+
+#include <stdlib.h>
+#include <device/device.h>
+#include <device/pnp.h>
+#include <uart8250.h>
+#include "chip.h"
+#include "i3100.h"
+#include <arch/io.h>
+
+static void pnp_enter_ext_func_mode(device_t dev)
+{
+	outb(0x80, dev->path.u.pnp.port);
+	outb(0x86, dev->path.u.pnp.port);
+}
+
+static void pnp_exit_ext_func_mode(device_t dev)
+{
+	outb(0x68, dev->path.u.pnp.port);
+	outb(0x08, dev->path.u.pnp.port);
+}
+
+static void i3100_init(device_t dev)
+{
+	struct superio_intel_i3100_config *conf;
+	struct resource *res0;
+
+	if (!dev->enabled) {
+		return;
+	}
+
+	conf = dev->chip_info;
+
+	switch (dev->path.u.pnp.device) {
+	case I3100_SP1:
+		res0 = find_resource(dev, PNP_IDX_IO0);
+		init_uart8250(res0->base, &conf->com1);
+		break;
+	case I3100_SP2:
+		res0 = find_resource(dev, PNP_IDX_IO0);
+		init_uart8250(res0->base, &conf->com2);
+		break;
+	}
+}
+
+static void i3100_pnp_set_resources(device_t dev)
+{
+	pnp_enter_ext_func_mode(dev);
+	pnp_set_resources(dev);
+	pnp_exit_ext_func_mode(dev);
+}
+
+static void i3100_pnp_enable_resources(device_t dev)
+{
+	pnp_enter_ext_func_mode(dev);
+	pnp_enable_resources(dev);
+	pnp_exit_ext_func_mode(dev);
+}
+
+static void i3100_pnp_enable(device_t dev)
+{
+	pnp_enter_ext_func_mode(dev);
+	pnp_set_logical_device(dev);
+	pnp_set_enable(dev, dev->enabled);
+	pnp_exit_ext_func_mode(dev);
+}
+
+static struct device_operations ops = {
+	.read_resources   = pnp_read_resources,
+	.set_resources    = i3100_pnp_set_resources,
+	.enable_resources = i3100_pnp_enable_resources,
+	.enable           = i3100_pnp_enable,
+	.init             = i3100_init,
+};
+
+static struct pnp_info pnp_dev_info[] = {
+	{ &ops, I3100_SP1, PNP_IO0 | PNP_IRQ0, { 0x7f8, 0 }, },
+	{ &ops, I3100_SP2, PNP_IO0 | PNP_IRQ0, { 0x7f8, 0 }, },
+};
+
+static void enable_dev(struct device *dev)
+{
+	pnp_enable_devices(dev, &ops, ARRAY_SIZE(pnp_dev_info), pnp_dev_info);
+}
+
+struct chip_operations superio_intel_i3100_ops = {
+	CHIP_NAME("Intel 3100 Super I/O")
+	.enable_dev = enable_dev,
+};
+