mainboard/lenovo/t430: Add Thinkpad T430 support

Tested and working:
* HDD LED
* Booting GNU Linux 4.9 from HDD using SeaBios
* Booting GNU Linux 4.9 from USB using SeaBios
* Native GFX init
* All Fn function keys
* Speakers
* PCIe Wifi
* Camera
* WWAN
* Fan (Dynamic Thermal Managment)
* Flashing using internal programmer
* Dual memory DIMMs running at up to DDR3-1866
* AC events
* Touchpad, trackball and keyboard
* USB3 ports running at SuperSpeed
* Ethernet
* Headphone jack
* Speaker mute
* Microphone mute
* Volume keys
* Fingerprint sensor
* Lid switch
* Thinklight
* TPM (disable SeaBios CONFIG_TCGBIOS)
* CMOS options:
** power_on_after_fail
** reboot_counter
** boot_option
** gfx_uma_size
** usb_always_on

Untested:
* Booting Windows
* Hybrid graphics
* Docking station
* VGA

Broken:
* Wifi LED is always on

Change-Id: I5403cfb80a57753e873c570d95ca535cf5f45630
Signed-off-by: Philipp Deppenwiese <zaolin@das-labor.org>
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/18011
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>

1 files changed, 102 insertions, 0 deletions

diff --git a/src/mainboard/lenovo/t430/smihandler.c b/src/mainboard/lenovo/t430/smihandler.c
new file mode 100644
index 0000000000..e86c3c0de6
--- /dev/null
+++ b/src/mainboard/lenovo/t430/smihandler.c
@@ -0,0 +1,102 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2008-2009 coresystems GmbH
+ * Copyright (C) 2014 Vladimir Serbinenko
+ *
+ * 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; version 2 of
+ * the License.
+ *
+ * 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.
+ */
+
+#include <arch/io.h>
+#include <console/console.h>
+#include <cpu/x86/smm.h>
+#include <ec/acpi/ec.h>
+#include <ec/lenovo/h8/h8.h>
+#include <delay.h>
+#include <southbridge/intel/bd82x6x/pch.h>
+
+#define GPE_EC_SCI	1
+#define GPE_EC_WAKE	13
+
+static void mainboard_smm_init(void)
+{
+	printk(BIOS_DEBUG, "initializing SMI\n");
+}
+
+int mainboard_io_trap_handler(int smif)
+{
+	static int smm_initialized;
+
+	if (!smm_initialized) {
+		mainboard_smm_init();
+		smm_initialized = 1;
+	}
+
+	return 0;
+}
+
+static void mainboard_smi_handle_ec_sci(void)
+{
+	u8 status = inb(EC_SC);
+	u8 event;
+
+	if (!(status & EC_SCI_EVT))
+		return;
+
+	event = ec_query();
+	printk(BIOS_DEBUG, "EC event %02x\n", event);
+}
+
+void mainboard_smi_gpi(u32 gpi_sts)
+{
+	if (gpi_sts & (1 << GPE_EC_SCI))
+		mainboard_smi_handle_ec_sci();
+}
+
+int mainboard_smi_apmc(u8 data)
+{
+	switch (data) {
+	case APM_CNT_ACPI_ENABLE:
+		/* use 0x1600/0x1604 to prevent races with userspace */
+		ec_set_ports(0x1604, 0x1600);
+		/* route EC_SCI to SCI */
+		gpi_route_interrupt(GPE_EC_SCI, GPI_IS_SCI);
+		/* discard all events, and enable attention */
+		ec_write(0x80, 0x01);
+		break;
+	case APM_CNT_ACPI_DISABLE:
+		/* we have to use port 0x62/0x66, as 0x1600/0x1604 doesn't
+		   provide a EC query function */
+		ec_set_ports(0x66, 0x62);
+		/* route EC_SCI to SMI */
+		gpi_route_interrupt(GPE_EC_SCI, GPI_IS_SMI);
+		/* discard all events, and enable attention */
+		ec_write(0x80, 0x01);
+		break;
+	default:
+		break;
+	}
+	return 0;
+}
+
+void mainboard_smi_sleep(u8 slp_typ)
+{
+	if (slp_typ == 3) {
+		h8_usb_always_on();
+
+		u8 ec_wake = ec_read(0x32);
+		/* If EC wake events are enabled, enable wake on EC WAKE GPE.  */
+		if (ec_wake & 0x14) {
+			/* Redirect EC WAKE GPE to SCI.  */
+			gpi_route_interrupt(GPE_EC_WAKE, GPI_IS_SCI);
+		}
+	}
+}