Add support for ITE it8705f from Uwe Hermann

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2397 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

5 files changed, 243 insertions, 0 deletions

diff --git a/src/superio/ite/it8705f/Config.lb b/src/superio/ite/it8705f/Config.lb
new file mode 100644
index 0000000000..f62a567d61
--- /dev/null
+++ b/src/superio/ite/it8705f/Config.lb
@@ -0,0 +1,2 @@
+config chip.h
+object superio.o
diff --git a/src/superio/ite/it8705f/chip.h b/src/superio/ite/it8705f/chip.h
new file mode 100644
index 0000000000..4c782b8c6c
--- /dev/null
+++ b/src/superio/ite/it8705f/chip.h
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2006 Uwe Hermann <uwe@hermann-uwe.de>
+ *
+ * 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_IT8705F
+#define _SUPERIO_ITE_IT8705F
+
+/* This chip doesn't seem to have keyboard and mouse support. */
+
+#include <uart8250.h>
+
+extern struct chip_operations superio_ITE_it8705f_ops;
+
+struct superio_ITE_it8705f_config {
+	struct uart8250 com1, com2;
+};
+
+#endif /* _SUPERIO_ITE_IT8705F */
+
diff --git a/src/superio/ite/it8705f/it8705f.h b/src/superio/ite/it8705f/it8705f.h
new file mode 100644
index 0000000000..3b93fbe0fb
--- /dev/null
+++ b/src/superio/ite/it8705f/it8705f.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2006 Uwe Hermann <uwe@hermann-uwe.de>
+ *
+ * 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.ite.com.tw/product_info/PC/Brief-IT8705_2.asp */
+/* Status: untested on real hardware, but it compiles. */
+/* Note: This should also work on an IT8705AF, they're almost the same. */
+
+/* This chip doesn't seem to have keyboard and mouse support. */
+
+#define IT8705F_FDC  0x00 /* Floppy */
+#define IT8705F_SP1  0x01 /* Com1 */
+#define IT8705F_SP2  0x02 /* Com2 */
+#define IT8705F_PP   0x03 /* Parallel port */
+#define IT8705F_EC   0x04 /* Environment controller */
+#define IT8705F_GPIO 0x05 /* GPIO */
+#define IT8705F_GAME 0x06 /* GAME port */
+#define IT8705F_IR   0x07 /* Consumer IR */
+#define IT8705F_MIDI 0x08 /* MIDI port */
+
diff --git a/src/superio/ite/it8705f/it8705f_early_serial.c b/src/superio/ite/it8705f/it8705f_early_serial.c
new file mode 100644
index 0000000000..d80e2ed59b
--- /dev/null
+++ b/src/superio/ite/it8705f/it8705f_early_serial.c
@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2006 Uwe Hermann <uwe@hermann-uwe.de>
+ *
+ * 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 "it8705f.h"
+
+/* The base address is 0x2e or 0x4e, depending on config bytes. */
+#define SIO_BASE                     0x2e
+#define SIO_INDEX                    SIO_BASE
+#define SIO_DATA                     SIO_BASE+1
+
+/* Global Configuration Registers. */
+#define IT8705F_CONFIG_REG_CC        0x02 /* Configure Control (write-only). */
+#define IT8705F_CONFIG_REG_LDN       0x07 /* Logical Device Number. */
+#define IT8705F_CONFIG_REG_CONFIGSEL 0x22 /* Configuration Select. */
+
+/* WTF? 0x23 and 0x24 are swapped here (when compared to other IT87xx). */
+#define IT8705F_CONFIG_REG_CLOCKSEL  0x24 /* Clock Selection. */
+#define IT8705F_CONFIG_REG_SWSUSP    0x23 /* Software Suspend, Flash I/F. */
+
+#define IT8705F_CONFIGURATION_PORT   0x2e /* Write-only. */
+
+/* The content of IT8705F_CONFIG_REG_LDN (index 0x07) must be set to the
+ * LDN the register belongs to, before you can access the register. */
+static void it8705f_sio_write(uint8_t ldn, uint8_t index, uint8_t value)
+{
+	outb(IT8705F_CONFIG_REG_LDN, SIO_BASE);
+	outb(ldn, SIO_DATA);
+	outb(index, SIO_BASE);
+	outb(value, SIO_DATA);
+}
+
+/* Enable the peripheral devices on the IT8705F Super IO chip. */
+static void it8705f_enable_serial(device_t dev, unsigned iobase)
+{
+	/* (1) Enter the configuration state (MB PnP mode). */
+
+	/* Perform MB PnP setup to put the SIO chip at 0x2e. */
+	/* Base address 0x2e: 0x87 0x01 0x55 0x55. */
+	/* Base address 0x4e: 0x87 0x01 0x55 0xaa. */
+	outb(0x87, IT8705F_CONFIGURATION_PORT);
+	outb(0x01, IT8705F_CONFIGURATION_PORT);
+	outb(0x55, IT8705F_CONFIGURATION_PORT);
+	outb(0x55, IT8705F_CONFIGURATION_PORT);
+
+	/* (2) Modify the data of configuration registers. */
+
+	/* Select the chip to configure (if there's more than one).
+         * Set bit 7 to select JP3=1, clear bit 7 to select JP3=0.
+         * If this register is not written, both chips are configured. */
+	/* it8705f_sio_write(0x00, IT8705F_CONFIG_REG_CONFIGSEL, 0x00); */
+
+	/* Enable all devices. */
+	it8705f_sio_write(IT8705F_FDC,  0x30, 0x1); /* Floppy */
+	it8705f_sio_write(IT8705F_SP1,  0x30, 0x1); /* Serial port 1 */
+	it8705f_sio_write(IT8705F_SP2,  0x30, 0x1); /* Serial port 2 */
+	it8705f_sio_write(IT8705F_PP,   0x30, 0x1); /* Parallel port */
+	it8705f_sio_write(IT8705F_EC,   0x30, 0x1); /* Environment controller */
+	/* GPIO */
+	it8705f_sio_write(IT8705F_GAME, 0x30, 0x1); /* GAME port */
+	it8705f_sio_write(IT8705F_IR,   0x30, 0x1); /* Consumer IR */
+	it8705f_sio_write(IT8705F_MIDI, 0x30, 0x1); /* MIDI port */
+
+	/* Select 24MHz/48MHz CLKIN (set/clear bit 0). TODO: Needed? */
+	/* it8705f_sio_write(0x00, IT8705F_CONFIG_REG_CLOCKSEL, 0x00); */
+
+	/* Clear software suspend mode (clear bit 0). TODO: Needed? */
+	/* it8705f_sio_write(0x00, IT8705F_CONFIG_REG_SWSUSP, 0x00); */
+
+	/* (3) Exit the configuration state (MB PnP mode). */
+	it8705f_sio_write(0x00, IT8705F_CONFIG_REG_CC, 0x02); 
+}
+
diff --git a/src/superio/ite/it8705f/superio.c b/src/superio/ite/it8705f/superio.c
new file mode 100644
index 0000000000..53d07e67e4
--- /dev/null
+++ b/src/superio/ite/it8705f/superio.c
@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2006 Uwe Hermann <uwe@hermann-uwe.de>
+ *
+ * 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
+ */
+
+/* This chip doesn't seem to have keyboard and mouse support. */
+
+#include <uart8250.h>
+#include "chip.h"
+#include "it8705f.h"
+
+static void init(device_t dev)
+{
+	struct superio_ITE_it8705f_config *conf;
+	struct resource *res0, *res1;
+
+	if (!dev->enabled) {
+		return;
+	}
+
+	conf = dev->chip_info;
+
+	switch (dev->path.u.pnp.device) {
+	case IT8705F_FDC: /* TODO. */
+		break;
+	case IT8705F_SP1:
+		res0 = find_resource(dev, PNP_IDX_IO0);
+		init_uart8250(res0->base, &conf->com1);
+		break;
+	case IT8705F_SP2:
+		res0 = find_resource(dev, PNP_IDX_IO0);
+		init_uart8250(res0->base, &conf->com2);
+		break;
+	case IT8705F_PP: /* TODO. */
+		break;
+	case IT8705F_EC: /* TODO. */
+		break;
+	case IT8705F_GPIO: /* TODO. */
+		break;
+	case IT8705F_GAME: /* TODO. */
+		break;
+	case IT8705F_IR: /* TODO. */
+		break;
+	case IT8705F_MIDI: /* TODO. */
+		break;
+	}
+}
+
+static struct device_operations ops = {
+	.read_resources   = pnp_read_resources,
+	.set_resources    = pnp_set_resources,
+	.enable_resources = pnp_enable_resources,
+	.enable           = pnp_enable,
+	.init             = init,
+};
+
+/* TODO: FDC, PP, EC, GPIO, GAME, IR, MIDI. */
+static struct pnp_info pnp_dev_info[] = {
+ { &ops, IT8705F_SP1,  PNP_IO0 | PNP_IRQ0, { 0x7f8, 0 }, },
+ { &ops, IT8705F_SP2,  PNP_IO0 | PNP_IRQ0 | PNP_DRQ0 | PNP_DRQ1, { 0x7f8, 0 }, },
+};
+
+static void enable_dev(struct device *dev)
+{
+	pnp_enable_devices(dev, &pnp_ops,
+		sizeof(pnp_dev_info)/sizeof(pnp_dev_info[0]), pnp_dev_info);
+}
+
+struct chip_operations superio_ITE_it8705f_ops = {
+	CHIP_NAME("ITE it8705f")
+	.enable_dev = enable_dev,
+};
+