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>
diff --git a/src/mainboard/lenovo/t430/romstage.c b/src/mainboard/lenovo/t430/romstage.c
new file mode 100644
index 0000000..eb2d29e
--- /dev/null
+++ b/src/mainboard/lenovo/t430/romstage.c
@@ -0,0 +1,70 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2017 Patrick Rudolph <siro@das-labor.org>
+ *
+ * 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 <device/pci_def.h>
+#include <northbridge/intel/sandybridge/raminit_native.h>
+#include <southbridge/intel/bd82x6x/pch.h>
+#include <ec/lenovo/pmh7/pmh7.h>
+
+void pch_enable_lpc(void)
+{
+	/* EC Decode Range Port60/64, Port62/66 */
+	/* Enable TPM, EC, PS/2 Keyboard/Mouse */
+	pci_write_config16(PCH_LPC_DEV, LPC_EN,
+			   CNF2_LPC_EN | MC_LPC_EN | KBC_LPC_EN);
+
+	pci_write_config32(PCH_LPC_DEV, LPC_GEN1_DEC,
+			   (0x0c << 16) | EC_LENOVO_PMH7_BASE | 1);
+}
+
+void rcba_config(void)
+{
+	/* Disable unused devices (board specific, reserved only).
+	 * FIXME: Test if reserved bits are read only. */
+	RCBA32(FD) = PCH_DISABLE_ALWAYS | 0x10001fe0;
+}
+
+/* FIXME: used T530 values here */
+const struct southbridge_usb_port mainboard_usb_ports[] = {
+	{ 1, 1,  0 },
+	{ 1, 1,  1 },
+	{ 1, 2,  3 },
+	{ 1, 1, -1 },
+	{ 1, 1,  2 },
+	{ 1, 0, -1 },
+	{ 0, 0, -1 },
+	{ 1, 2, -1 },
+	{ 1, 0, -1 },
+	{ 1, 1,  5 },
+	{ 1, 0, -1 },
+	{ 1, 0, -1 },
+	{ 1, 3, -1 },
+	{ 1, 1, -1 },
+};
+
+void mainboard_early_init(int s3resume)
+{
+}
+
+void mainboard_config_superio(void)
+{
+}
+
+void mainboard_get_spd(spd_raw_data *spd, bool id_only)
+{
+	read_spd(&spd[0], 0x50, id_only);
+	read_spd(&spd[2], 0x51, id_only);
+}