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authorDamien Zammit <damien@zamaudio.com>2013-07-20 17:44:15 +1000
committerAlexandru Gagniuc <mr.nuke.me@gmail.com>2013-07-20 21:21:35 +0200
commit4c2ebeba78e437df2d156a4c68f1fb15b62926f5 (patch)
treec6c56ad5bc5a88dfbacd6df5205858d500a33982 /src/superio
parented621ada6309004c54ab922f2b4143427d6d1a84 (diff)
downloadcoreboot-4c2ebeba78e437df2d156a4c68f1fb15b62926f5.tar.xz
it8728f: Add ITE IT8728F superio early serial support.
This is the first of a series of patches to provide support for a new mainboard, Gigabyte GA-B75M-D3V. This patch provides early serial for the superio and has been tested on this mainboard. The code is based on IT8718F superio. Change-Id: I5636199b49314166ed3b81e60b41131964dd44ff Signed-off-by: Damien Zammit <damien@zamaudio.com> Reviewed-on: http://review.coreboot.org/3794 Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Tested-by: build bot (Jenkins)
Diffstat (limited to 'src/superio')
-rw-r--r--src/superio/ite/Kconfig2
-rw-r--r--src/superio/ite/Makefile.inc1
-rw-r--r--src/superio/ite/it8728f/Makefile.inc21
-rw-r--r--src/superio/ite/it8728f/early_serial.c71
-rw-r--r--src/superio/ite/it8728f/early_serial.h40
-rw-r--r--src/superio/ite/it8728f/it8728f.h42
6 files changed, 177 insertions, 0 deletions
diff --git a/src/superio/ite/Kconfig b/src/superio/ite/Kconfig
index e1970e8bc4..0cf112fc39 100644
--- a/src/superio/ite/Kconfig
+++ b/src/superio/ite/Kconfig
@@ -38,5 +38,7 @@ config SUPERIO_ITE_IT8718F
bool
config SUPERIO_ITE_IT8721F
bool
+config SUPERIO_ITE_IT8728F
+ bool
config SUPERIO_ITE_IT8772F
bool
diff --git a/src/superio/ite/Makefile.inc b/src/superio/ite/Makefile.inc
index ce595b804e..8610eea662 100644
--- a/src/superio/ite/Makefile.inc
+++ b/src/superio/ite/Makefile.inc
@@ -25,4 +25,5 @@ subdirs-y += it8712f
subdirs-y += it8716f
subdirs-y += it8718f
subdirs-y += it8721f
+subdirs-y += it8728f
subdirs-y += it8772f
diff --git a/src/superio/ite/it8728f/Makefile.inc b/src/superio/ite/it8728f/Makefile.inc
new file mode 100644
index 0000000000..d8d4f6a6e1
--- /dev/null
+++ b/src/superio/ite/it8728f/Makefile.inc
@@ -0,0 +1,21 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2013 Damien Zammit <damien@zamaudio.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 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
+##
+
+romstage-$(CONFIG_SUPERIO_ITE_IT8728F) += early_serial.c
diff --git a/src/superio/ite/it8728f/early_serial.c b/src/superio/ite/it8728f/early_serial.c
new file mode 100644
index 0000000000..7fbd061ab0
--- /dev/null
+++ b/src/superio/ite/it8728f/early_serial.c
@@ -0,0 +1,71 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2006 Uwe Hermann <uwe@hermann-uwe.de>
+ * Copyright (C) 2013 Damien Zammit <damien@zamaudio.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 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 "early_serial.h"
+
+/* Superio raw commands */
+static void it8728f_sio_write(device_t dev, u8 index, u8 value)
+{
+ pnp_set_logical_device(dev);
+ pnp_write_config(dev, index, value);
+}
+
+static void it8728f_enter_conf(device_t dev)
+{
+ u16 port = dev >> 8;
+
+ outb(0x87, port);
+ outb(0x01, port);
+ outb(0x55, port);
+ outb((port == 0x4e) ? 0xaa : 0x55, port);
+}
+
+static void it8728f_exit_conf(device_t dev)
+{
+ it8728f_sio_write(dev, IT8728F_CONFIG_REG_CC, 0x02);
+}
+
+/* Superio low level commands */
+void it8728f_reg_write(device_t dev, u8 index, u8 value)
+{
+ it8728f_enter_conf(dev);
+ it8728f_sio_write(dev, index, value);
+ it8728f_exit_conf(dev);
+}
+
+void it8728f_24mhz_clkin(device_t dev)
+{
+ it8728f_reg_write(dev, IT8728F_CONFIG_REG_CLOCKSEL, 0x1);
+}
+
+void it8728f_enable_serial(device_t dev, u16 iobase)
+{
+ /* (1) Enter the configuration state (MB PnP mode). */
+ it8728f_enter_conf(dev);
+
+ /* (2) Modify the data of configuration registers. */
+ pnp_set_logical_device(dev);
+ pnp_set_enable(dev, 0);
+ pnp_set_iobase(dev, PNP_IDX_IO0, iobase);
+ pnp_set_enable(dev, 1);
+
+ /* (3) Exit the configuration state (MB PnP mode). */
+ it8728f_exit_conf(dev);
+}
diff --git a/src/superio/ite/it8728f/early_serial.h b/src/superio/ite/it8728f/early_serial.h
new file mode 100644
index 0000000000..a146f4c7a6
--- /dev/null
+++ b/src/superio/ite/it8728f/early_serial.h
@@ -0,0 +1,40 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2013 Damien Zammit <damien@zamaudio.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 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_ITE_IT8728F_EARLY_SERIAL_H
+#define SUPERIO_ITE_IT8728F_EARLY_SERIAL_H
+
+#include <stdint.h>
+#include <arch/io.h>
+#include <device/pnp_def.h>
+#include "it8728f.h"
+
+/*
+ * Superio low level commands
+ * Pass dev = PNP_DEV(superiobase, LDN)
+ */
+void it8728f_reg_write(device_t dev, u8 index, u8 value);
+
+/* Select 24MHz CLKIN (48MHz default). */
+void it8728f_24mhz_clkin(device_t dev);
+
+/* Enable the serial port(s). */
+void it8728f_enable_serial(device_t dev, u16 iobase);
+
+#endif
diff --git a/src/superio/ite/it8728f/it8728f.h b/src/superio/ite/it8728f/it8728f.h
new file mode 100644
index 0000000000..603e4679bd
--- /dev/null
+++ b/src/superio/ite/it8728f/it8728f.h
@@ -0,0 +1,42 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2006 Uwe Hermann <uwe@hermann-uwe.de>
+ * Copyright (C) 2013 Damien Zammit <damien@zamaudio.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 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_ITE_IT8728F_IT8728F_H
+#define SUPERIO_ITE_IT8728F_IT8728F_H
+
+#define IT8728F_FDC 0x00 /* Floppy */
+#define IT8728F_SP1 0x01 /* Com1 */
+#define IT8728F_SP2 0x02 /* Com2 */
+#define IT8728F_PP 0x03 /* Parallel port */
+#define IT8728F_EC 0x04 /* Environment controller */
+#define IT8728F_KBCK 0x05 /* PS/2 keyboard */
+#define IT8728F_KBCM 0x06 /* PS/2 mouse */
+#define IT8728F_GPIO 0x07 /* GPIO */
+#define IT8728F_IR 0x0a /* Consumer IR */
+
+/* Global configuration registers. */
+#define IT8728F_CONFIG_REG_CC 0x02 /* Configure Control (write-only). */
+#define IT8728F_CONFIG_REG_LDN 0x07 /* Logical Device Number. */
+#define IT8728F_CONFIG_REG_CHIPVERS 0x22 /* Chip version */
+#define IT8728F_CONFIG_REG_CLOCKSEL 0x23 /* Clock Selection. */
+#define IT8728F_CONFIG_REG_SWSUSP 0x24 /* Software Suspend, Flash I/F. 'Special register' */
+
+#endif