[coreboot-gerrit] Patch set updated for coreboot: 7feaae3 it8728f: Add ITE IT8728F superio early serial support.

Damien Zammit (damien@zamaudio.com) gerrit at coreboot.org
Sat Jul 20 19:24:13 CEST 2013


Damien Zammit (damien at zamaudio.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/3794

-gerrit

commit 7feaae3dde98e646051c104d466384a1db645d13
Author: Damien Zammit <damien at zamaudio.com>
Date:   Sat Jul 20 17:44:15 2013 +1000

    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 at zamaudio.com>
---
 src/superio/ite/Kconfig                |  2 +
 src/superio/ite/Makefile.inc           |  1 +
 src/superio/ite/it8728f/Makefile.inc   | 21 ++++++++++
 src/superio/ite/it8728f/early_serial.c | 71 ++++++++++++++++++++++++++++++++++
 src/superio/ite/it8728f/early_serial.h | 50 ++++++++++++++++++++++++
 src/superio/ite/it8728f/it8728f.h      | 42 ++++++++++++++++++++
 6 files changed, 187 insertions(+)

diff --git a/src/superio/ite/Kconfig b/src/superio/ite/Kconfig
index e1970e8..b9411f5 100644
--- a/src/superio/ite/Kconfig
+++ b/src/superio/ite/Kconfig
@@ -40,3 +40,5 @@ config SUPERIO_ITE_IT8721F
 	bool
 config SUPERIO_ITE_IT8772F
 	bool
+config SUPERIO_ITE_IT8728F
+	bool
diff --git a/src/superio/ite/Makefile.inc b/src/superio/ite/Makefile.inc
index ce595b8..bed9e7d 100644
--- a/src/superio/ite/Makefile.inc
+++ b/src/superio/ite/Makefile.inc
@@ -26,3 +26,4 @@ subdirs-y += it8716f
 subdirs-y += it8718f
 subdirs-y += it8721f
 subdirs-y += it8772f
+subdirs-y += it8728f
diff --git a/src/superio/ite/it8728f/Makefile.inc b/src/superio/ite/it8728f/Makefile.inc
new file mode 100644
index 0000000..d8d4f6a
--- /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 at 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 0000000..583b5e7
--- /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 at hermann-uwe.de>
+ * Copyright (C) 2013 Damien Zammit <damien at 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"
+
+void it8728f_sio_write(device_t dev, u8 index, u8 value)
+{
+	pnp_set_logical_device(dev);
+	pnp_write_config(dev, index, value);
+}
+
+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);
+}
+
+void it8728f_exit_conf(device_t dev)
+{
+	it8728f_sio_write(dev, IT8728F_CONFIG_REG_CC, 0x02);
+}
+
+void it8728f_24mhz_clkin(device_t dev)
+{
+	it8728f_enter_conf(dev);
+	it8728f_sio_write(0x00, IT8728F_CONFIG_REG_CLOCKSEL, 0x1);
+	it8728f_exit_conf(dev);
+}
+
+void it8728f_disable_reboot(device_t dev)
+{
+	it8728f_enter_conf(dev);
+	it8728f_sio_write(IT8728F_GPIO, 0xEF, 0x7E);
+	it8728f_exit_conf(dev);
+}
+
+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 0000000..ca37ad8
--- /dev/null
+++ b/src/superio/ite/it8728f/early_serial.h
@@ -0,0 +1,50 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2013 Damien Zammit <damien at 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"
+
+void it8728f_sio_write(device_t dev, u8 index, u8 value);
+void it8728f_enter_conf(device_t dev);
+
+/* Remember to always pass PNP_DEV(iobase, 0) to this function */
+void it8728f_exit_conf(device_t dev);
+
+/* Select 24MHz CLKIN (48MHz default). */
+void it8728f_24mhz_clkin(device_t dev);
+
+/*
+ * GIGABYTE uses a special Super I/O register to protect its Dual BIOS
+ * mechanism. It lives in the GPIO LDN. However, register 0xEF is not
+ * mentioned in the IT8728F datasheet so just hardcode it to 0x7E for now.
+ *
+ * Bit 0 is Dual BIOS SPI chipselect, the rest set to 0x7E makes it boot
+ * without falling into power cycle loop.
+ */
+void it8728f_disable_reboot(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 0000000..603e467
--- /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 at hermann-uwe.de>
+ * Copyright (C) 2013 Damien Zammit <damien at 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



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