lenovo/s230u: Add Thinkpad Twist (S230U)

Created using autoport plus some manual work and copying from G505S to
account for the non-H8 EC.

This model uses the same ENE KB9012 EC as the G505S.

Tested:
- Mainboard variant with 8GB Elpida DDR3
- SeaBIOS payload
- Booting into Linux 4.9.6 with Debian/unstable installed on the
  internal HDD/SDD slot
- Native raminit
- Both native VGA init and option rom VGA init
- Basic TPM functionality (auto-detection and RNG)
- Battery status readout
- Basic ACPI functions (power button event; power-off; reboot)
- thinkpad-acpi hotkey functions
- thinkpad-acpi LED control (red thinkpad LED)
- Suspend to RAM and resume works
- Mini displayport output works

Known issues:
- Patches needed for EC battery support
  https://review.coreboot.org/#/c/18348/
  https://review.coreboot.org/#/c/18349/
- No thermal zone since temperature sensing is not H8-compatible
  and needs to be reverse engineered.

Not tested:
- msata/wwan (probably works)

Signed-off-by: Tobias Diedrich <ranma+coreboot@tdiedrich.de>
Change-Id: I52bc4515277e5c18afbb14a80a9ac788049f485c
Reviewed-on: https://review.coreboot.org/18351
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Rudolph <siro@das-labor.org>

25 files changed, 1694 insertions, 0 deletions

diff --git a/src/mainboard/lenovo/s230u/Kconfig b/src/mainboard/lenovo/s230u/Kconfig
new file mode 100644
index 0000000000..4b6727ca22
--- /dev/null
+++ b/src/mainboard/lenovo/s230u/Kconfig
@@ -0,0 +1,74 @@
+if BOARD_LENOVO_S230U
+
+config BOARD_SPECIFIC_OPTIONS # dummy
+	def_bool y
+	select SYSTEM_TYPE_LAPTOP
+	select CPU_INTEL_SOCKET_RPGA989
+	select NORTHBRIDGE_INTEL_IVYBRIDGE
+	select USE_NATIVE_RAMINIT
+	select SOUTHBRIDGE_INTEL_C216
+	select EC_COMPAL_ENE932
+	select EC_ACPI
+	select NO_UART_ON_SUPERIO
+	select BOARD_ROMSIZE_KB_12288
+	select HAVE_ACPI_TABLES
+	select HAVE_ACPI_RESUME
+	select INTEL_INT15
+	select SANDYBRIDGE_IVYBRIDGE_LVDS
+	select SERIRQ_CONTINUOUS_MODE
+	select MAINBOARD_HAS_LPC_TPM
+	select GENERIC_SPD_BIN
+
+config HAVE_IFD_BIN
+	bool
+	default n
+
+config HAVE_ME_BIN
+	bool
+	default n
+
+config MAINBOARD_DIR
+	string
+	default lenovo/s230u
+
+config MAINBOARD_PART_NUMBER
+	string
+	default "ThinkPad S230U (Twist)"
+
+config MMCONF_BASE_ADDRESS
+	hex
+	default 0xf0000000
+
+config EC_BASE_ADDRESS
+	hex
+	default 0xff000000
+
+config MAX_CPUS
+	int
+	default 8
+
+config USBDEBUG_HCD_INDEX
+	int
+	default 1
+
+config DRAM_RESET_GATE_GPIO
+	int
+	default 60
+
+config VGA_BIOS_FILE
+	string
+	default "pci8086,0166.rom"
+
+config VGA_BIOS_ID
+	string
+	default "8086,0166"
+
+config MAINBOARD_PCI_SUBSYSTEM_VENDOR_ID
+	hex
+	default 0x17aa
+
+config MAINBOARD_PCI_SUBSYSTEM_DEVICE_ID
+	hex
+	default 0x2205
+
+endif # BOARD_LENOVO_S230U
diff --git a/src/mainboard/lenovo/s230u/Kconfig.name b/src/mainboard/lenovo/s230u/Kconfig.name
new file mode 100644
index 0000000000..61d1ab7f16
--- /dev/null
+++ b/src/mainboard/lenovo/s230u/Kconfig.name
@@ -0,0 +1,2 @@
+config BOARD_LENOVO_S230U
+	bool "ThinkPad S230U (Twist)"
diff --git a/src/mainboard/lenovo/s230u/Makefile.inc b/src/mainboard/lenovo/s230u/Makefile.inc
new file mode 100644
index 0000000000..226eca85b0
--- /dev/null
+++ b/src/mainboard/lenovo/s230u/Makefile.inc
@@ -0,0 +1,15 @@
+romstage-y += gpio.c
+ramstage-y += ec.c
+smm-y += smihandler.c
+
+# FIXME: SPD images for samsung_8gb and hynix_8gb are missing.
+# It's possible that no mainboards with that variation were manufactured.
+SPD_SOURCES  = elpida_4gb			# 0b0000
+SPD_SOURCES += samsung_4gb			# 0b0001
+SPD_SOURCES += hynix_4gb			# 0b0010
+SPD_SOURCES += elpida_8gb			# 0b0011
+SPD_SOURCES += elpida_8gb			# 0b0100  FIXME: samsung_8gb
+SPD_SOURCES += elpida_8gb			# 0b0101  FIXME: hynix_8gb
+SPD_SOURCES += elpida_2gb			# 0b0110
+SPD_SOURCES += samsung_2gb			# 0b0111
+SPD_SOURCES += hynix_2gb			# 0b1000
diff --git a/src/mainboard/lenovo/s230u/acpi/ec.asl b/src/mainboard/lenovo/s230u/acpi/ec.asl
new file mode 100644
index 0000000000..b59c269ebf
--- /dev/null
+++ b/src/mainboard/lenovo/s230u/acpi/ec.asl
@@ -0,0 +1,364 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (c) 2011 Sven Schnelle <svens@stackframe.org>
+ * Copyright (c) 2013 Vladimir Serbinenko <phcoder@gmail.com>
+ * Copyright (c) 2017 Tobias Diedrich <ranma+coreboot@tdiedrich.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; 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.
+ */
+
+Device (EC0)
+{
+	Name (_HID, EISAID ("PNP0C09"))
+	Name (_UID, 0)
+
+	Name (_GPE, THINKPAD_EC_GPE)
+	Mutex (ECLK, 0x07)
+
+	/* EmbeddedControl should work as well, but memory mapped is faster. */
+	OperationRegion (ERAM, SystemMemory, (CONFIG_EC_BASE_ADDRESS + 0x100), 0x100)
+	Field (ERAM, ByteAcc, Lock, Preserve)
+	{
+		Offset(0x00),
+		    ,   1,
+		    ,   1,
+		HKFA,   1,  // FN lock (Hotkey / FN row toggle)
+		    ,   1,
+		    ,   1,
+		    ,   1,
+		    ,   1,
+
+		Offset(0x0c),
+		HLCL,   8,  // LED control
+
+		Offset(0x46),
+		    ,   4,
+		ONAC,   1,
+		    ,   3,
+
+		Offset(0x81),
+		PAGE,   8,
+	}
+
+	/* Battery info page 0 */
+	Field (ERAM, ByteAcc, NoLock, Preserve)
+	{
+		Offset(0xA0),
+		SBRC,   16,		/* Remaining capacity */
+		SBFC,   16,		/* Full-charge capacity */
+		SBAE,   16,
+		SBRS,   16,
+		SBAC,   16,		/* Present rate */
+		SBVO,   16,		/* Present voltage */
+		SBAF,   16,
+		SBBS,   16,
+	}
+
+	/* Battery info page 1 */
+	Field (ERAM, ByteAcc, NoLock, Preserve)
+	{
+		Offset (0xA0),
+                    ,   15,
+		SBCM,   1,		/* Power unit (0 == mA/mAh, 1 == mW/mWh) */
+		SBMD,   16,
+		SBCC,   16,
+	}
+
+	/* Battery info page 2 */
+	Field (ERAM, ByteAcc, NoLock, Preserve)
+	{
+		Offset (0xA0),
+		SBDC,   16,		/* Design Capacity */
+		SBDV,   16,		/* Design Voltage */
+		SBOM,   16,
+		SBSI,   16,
+		SBDT,   16,
+		SBSN,   16,		/* Serial number */
+	}
+
+	/* Battery info page 4 */
+	Field (ERAM, ByteAcc, NoLock, Preserve)
+	{
+		Offset (0xA0),
+		SBCH,   32,		/* Type (LiON) */
+	}
+
+	/* Battery info page 5 */
+	Field (ERAM, ByteAcc, NoLock, Preserve)
+	{
+		Offset (0xA0),
+		SBMN,   128,		/* Manufacturer */
+	}
+
+	/* Battery info page 6 */
+	Field (ERAM, ByteAcc, NoLock, Preserve)
+	{
+		Offset (0xA0),
+		SBDN,   128,		/* Model */
+	}
+
+	Method (_CRS, 0, Serialized)
+	{
+		Name (ECMD, ResourceTemplate()
+		{
+			IO (Decode16, 0x62, 0x62, 0, 1)
+			IO (Decode16, 0x66, 0x66, 0, 1)
+			IO (Decode16, 0x700, 0x700, 0, 8)
+			Memory32Fixed(ReadOnly, CONFIG_EC_BASE_ADDRESS, 0x1000, FF00)
+		})
+		Return (ECMD)
+	}
+
+	/* Increase brightness hotkey */
+	Method (_Q14, 0, NotSerialized) {
+		BRIGHTNESS_UP()
+		^HKEY.MHKQ (0x1010)
+	}
+
+	/* Decrease brightness hotkey */
+	Method (_Q15, 0, NotSerialized) {
+		BRIGHTNESS_DOWN()
+		^HKEY.MHKQ (0x1011)
+	}
+
+	/* Video output switch hotkey */
+	Method (_Q16, 0, NotSerialized) {
+		Notify (ACPI_VIDEO_DEVICE, 0x82)
+		^HKEY.MHKQ (0x1007)
+	}
+
+	Method (_Q19, 0, NotSerialized)
+	{
+		^HKEY.MHKQ (0x1018)
+	}
+
+	/* Switched to AC power */
+	Method (_Q26, 0, NotSerialized)
+	{
+		Store (One, PWRS)
+		Notify (^AC, 0x80)
+		Notify (^BAT0, 0x80)
+		\PNOT ()
+		^HKEY.MHKQ (0x6040)
+	}
+
+	/* Switched to battery power */
+	Method (_Q27, 0, NotSerialized)
+	{
+		Store (Zero, PWRS)
+		Notify (^AC, 0x80)
+		Notify (^BAT0, 0x80)
+		\PNOT ()
+		^HKEY.MHKQ (0x6040)
+	}
+
+	/* Lid openend */
+	Method (_Q2A, 0, NotSerialized)
+	{
+		Store (One, LIDS)
+		Notify(^LID, 0x80)
+		^HKEY.MHKQ (0x5002)
+	}
+
+	/* Lid closed */
+	Method (_Q2B, 0, NotSerialized)
+	{
+		Store (Zero, LIDS)
+		Notify(^LID, 0x80)
+		^HKEY.MHKQ (0x5001)
+	}
+
+	/* Tablet swivel down */
+	Method (_Q35, 0, NotSerialized)
+	{
+		^HKEY.MHKQ (0x60c0)
+		^HKEY.MHKQ (0x500a)
+	}
+
+	/* Tablet swivel up */
+	Method (_Q36, 0, NotSerialized)
+	{
+		^HKEY.MHKQ (0x60c0)
+		^HKEY.MHKQ (0x5009)
+	}
+
+	/* Tablet rotate lock button */
+	Method (_Q37, 0, NotSerialized)
+	{
+		^HKEY.MHKQ (0x6020)
+	}
+
+	/* Numlock pressed */
+	Method (_Q3F, 0, NotSerialized)
+	{
+		^HKEY.MHKQ (0x6000)
+	}
+
+	/* RFKill status changed */
+	Method (_Q41, 0, NotSerialized) {
+		^HKEY.MHKQ (0x7000)
+	}
+
+	/* Mute hotkey */
+	Method (_Q43, 0, NotSerialized) {
+		^HKEY.MHKQ (0x1017)
+	}
+
+	/* Settings hotkey */
+	Method (_Q5A, 0, NotSerialized)
+	{
+		^HKEY.MHKQ (0x101D)
+	}
+
+	/* Search hotkey */
+	Method (_Q5B, 0, NotSerialized)
+	{
+		^HKEY.MHKQ (0x101E)
+	}
+
+	/* Scale hotkey */
+	Method (_Q5C, 0, NotSerialized)
+	{
+		^HKEY.MHKQ (0x101F)
+	}
+
+	/* File hotkey */
+	Method (_Q5D, 0, NotSerialized)
+	{
+		^HKEY.MHKQ (0x1020)
+	}
+
+	/* RFkill hotkey */
+	Method (_Q64, 0, NotSerialized) {
+		^HKEY.MHKQ (0x1005)
+	}
+
+	/* Mic mute hotkey */
+	Method (_Q6A, 0, NotSerialized)
+	{
+		^HKEY.MHKQ (0x101B)
+	}
+
+	/* FN key pressed */
+	Method (_Q70, 0, NotSerialized) { }
+
+	/* FN+Esc pressed / FN row mode switch */
+	Method (_Q74, 0, NotSerialized) {
+		XOr(One, HKFA, HKFA)
+		^HKEY.MHKQ (0x6060)
+	}
+
+	/* Implements enough of the Lenovo hotkey device for
+	 * thinkpad-acpi to work, no real support for hotkey masking */
+	Device (HKEY)
+	{
+		Name (_HID, EisaId ("LEN0068"))
+
+		Name (DHKC, Zero)
+		Name (DHKV, Zero)
+		Name (DHKN, 0xFC018070)  // Hotkey mask
+		Mutex (XDHK, 0x07)
+
+		Method (_STA, 0, NotSerialized)
+		{
+			Return (0x0F)
+		}
+
+		Method (MHKV, 0, NotSerialized)
+		{
+			Return (0x0100)  // Interface version 1.0
+		}
+
+		Method (MHKA, 0, NotSerialized)  // Hotkey all mask
+		{
+			Return (0xFFFFFFFF)
+		}
+
+		Method (MHKM, 2, NotSerialized)  // Set hotkey mask
+		{
+			Acquire (XDHK, 0xFFFF)
+
+			ShiftLeft (One, Decrement (Arg0), Local0)
+			If (Arg1) {
+				Or (Local0, DHKN, DHKN)
+			} Else {
+				And (Not(Local0), DHKN, DHKN)
+			}
+
+			Release (XDHK)
+		}
+
+		Method (MHKC, 1, NotSerialized)  // Hotkey disable?
+		{
+			Acquire (XDHK, 0xFFFF)
+
+			Store (Arg0, DHKC)
+
+			Release (XDHK)
+		}
+
+		Method (MHKP, 0, NotSerialized)  // Hotkey poll
+		{
+			Acquire (XDHK, 0xFFFF)
+
+			Store (Zero, Local0)
+
+			if (DHKV) {
+				Store (DHKV, Local0)
+				Store (Zero, DHKV)
+			}
+
+			Release (XDHK)
+
+			Return (Local0)
+		}
+
+		Method (MHKQ, 1, NotSerialized)  // Send hotkey event
+		{
+			Acquire (XDHK, 0xFFFF)
+
+			Store (Arg0, DHKV)
+
+			Release (XDHK)
+
+			Notify (HKEY, 0x80) // Status Change
+		}
+	}
+
+	/* LED support for thinkpad-acpi */
+	Method (LED, 2, NotSerialized)
+	{
+		Or (Arg0, Arg1, HLCL)
+	}
+
+	Device (AC)
+	{
+		Name (_HID, "ACPI0003")
+		Name (_PCL, Package (1) { \_SB })
+
+		Method (_PSR, 0, NotSerialized)
+		{
+			Return (ONAC)
+		}
+		Method (_STA, 0, NotSerialized)
+		{
+			Return (0x0F)
+		}
+	}
+
+	/* Battery is H8 compatible, but requires an explicit delay */
+	#define BATTERY_PAGE_DELAY_MS 20
+	#include <ec/lenovo/h8/acpi/battery.asl>
+
+	/* LID is H8 compatible */
+	#include <ec/lenovo/h8/acpi/lid.asl>
+}
diff --git a/src/mainboard/lenovo/s230u/acpi/gpe.asl b/src/mainboard/lenovo/s230u/acpi/gpe.asl
new file mode 100644
index 0000000000..a69f5629b1
--- /dev/null
+++ b/src/mainboard/lenovo/s230u/acpi/gpe.asl
@@ -0,0 +1,57 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (c) 2017 Tobias Diedrich <ranma+coreboot@tdiedrich.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; 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.
+ */
+
+Scope (_GPE)
+{
+	Field(GPIO, ByteAcc, NoLock, Preserve)
+	{
+		Offset(0x2c),	// GPIO Invert
+		    ,   2,
+		GV02,   1,
+		    ,   1,
+		GV04,   1,
+	}
+
+	Name (PDET, Zero)
+	Method (PNOT, 2, Serialized) {
+		ShiftLeft (Arg0, Arg1, Local0)
+		Not( ShiftLeft (One, Arg1), Local1)
+		Or (Local0, And (Local1, PDET), PDET)
+		If (LEqual (PDET, Zero)) {
+			// Palm removed
+			\_SB.PCI0.LPCB.EC0.HKEY.MHKQ (0x60B1)
+		} Else {
+			// Palm detected
+			\_SB.PCI0.LPCB.EC0.HKEY.MHKQ (0x60B0)
+		}
+	}
+
+	/* Palm detect sensor 1 */
+	Method (_L12, 0, NotSerialized) {
+		// Invert trigger
+		Store(GP02, GV02)
+
+		PNOT (GP02, 0)
+	}
+
+	/* Palm detect sensor 2 */
+	Method (_L14, 0, NotSerialized) {
+		// Invert trigger
+		Store(GP04, GV04)
+
+		PNOT (GP04, 1)
+	}
+}
diff --git a/src/mainboard/lenovo/s230u/acpi/platform.asl b/src/mainboard/lenovo/s230u/acpi/platform.asl
new file mode 100644
index 0000000000..d90715ab51
--- /dev/null
+++ b/src/mainboard/lenovo/s230u/acpi/platform.asl
@@ -0,0 +1,50 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (c) 2017 Tobias Diedrich <ranma+coreboot@tdiedrich.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; 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.
+ */
+
+Method(_WAK,1)
+{
+	/* Turn on radios */
+	Store (One, GP33) /* WLBT_OFF_5# (To pin 5 of WiFi mPCIe) */
+	Store (One, GP36) /* WLBT_OFF_51# (To pin 51 of WiFi mPCIe) */
+	/* There also is RF_OFF# on pin 20, controlled by the EC */
+
+	Return(Package(){0,0})
+}
+
+Method(_PTS,1)
+{
+	/* Turn off radios */
+	Store (Zero, GP33) /* WLBT_OFF_5# (To pin 5 of WiFi mPCIe) */
+	Store (Zero, GP36) /* WLBT_OFF_51# (To pin 51 of WiFi mPCIe) */
+	/* There also is RF_OFF# on pin 20, controlled by the EC */
+}
+
+Scope(\_SI)
+{
+	Method(_SST, 1, NotSerialized)
+	{
+		If (LLess(Arg0, 2))
+		{
+			/* Thinkpad LED on */
+			\_SB.PCI0.LPCB.EC0.LED (Zero, 0x80)
+		}
+		Else
+		{
+			/* Thinkpad LED blinking */
+			\_SB.PCI0.LPCB.EC0.LED (Zero, 0xC0)
+		}
+	}
+}
diff --git a/src/mainboard/lenovo/s230u/acpi/superio.asl b/src/mainboard/lenovo/s230u/acpi/superio.asl
new file mode 100644
index 0000000000..f2b35ba9c1
--- /dev/null
+++ b/src/mainboard/lenovo/s230u/acpi/superio.asl
@@ -0,0 +1 @@
+#include <drivers/pc80/pc/ps2_controller.asl>
diff --git a/src/mainboard/lenovo/s230u/acpi_tables.c b/src/mainboard/lenovo/s230u/acpi_tables.c
new file mode 100644
index 0000000000..21fce85f5a
--- /dev/null
+++ b/src/mainboard/lenovo/s230u/acpi_tables.c
@@ -0,0 +1,33 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2007-2009 coresystems GmbH
+ *
+ * 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 <southbridge/intel/bd82x6x/nvs.h>
+
+void acpi_create_gnvs(global_nvs_t *gnvs)
+{
+	/* Disable USB ports in S3 by default */
+	gnvs->s3u0 = 0;
+	gnvs->s3u1 = 0;
+
+	/* Disable USB ports in S5 by default */
+	gnvs->s5u0 = 0;
+	gnvs->s5u1 = 0;
+
+	/* The LID is open by default */
+	gnvs->lids = 1;
+
+	gnvs->tcrt = 100;
+	gnvs->tpsv = 90;
+}
diff --git a/src/mainboard/lenovo/s230u/board_info.txt b/src/mainboard/lenovo/s230u/board_info.txt
new file mode 100644
index 0000000000..09ddde1f85
--- /dev/null
+++ b/src/mainboard/lenovo/s230u/board_info.txt
@@ -0,0 +1,6 @@
+Category: laptop
+ROM package: SOIC-8
+ROM protocol: SPI
+ROM socketed: n
+Flashrom support: n
+Release year: 2012
diff --git a/src/mainboard/lenovo/s230u/devicetree.cb b/src/mainboard/lenovo/s230u/devicetree.cb
new file mode 100644
index 0000000000..ff4c6c4cff
--- /dev/null
+++ b/src/mainboard/lenovo/s230u/devicetree.cb
@@ -0,0 +1,138 @@
+chip northbridge/intel/sandybridge
+	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
+	register "gfx.link_frequency_270_mhz" = "1"
+	register "gfx.ndid" = "3"
+	register "gfx.use_spread_spectrum_clock" = "1"
+	register "gpu_cpu_backlight" = "0x00000060"
+	register "gpu_dp_b_hotplug" = "4"
+	register "gpu_dp_c_hotplug" = "4"
+	register "gpu_dp_d_hotplug" = "4"
+	register "gpu_panel_port_select" = "0"
+	register "gpu_panel_power_backlight_off_delay" = "2000"
+	register "gpu_panel_power_backlight_on_delay" = "2000"
+	register "gpu_panel_power_cycle_delay" = "5"
+	register "gpu_panel_power_down_delay" = "500"
+	register "gpu_panel_power_up_delay" = "600"
+	register "gpu_pch_backlight" = "0x041e041e"
+	device cpu_cluster 0x0 on
+		chip cpu/intel/socket_rPGA989
+			device lapic 0x0 on
+			end
+		end
+		chip cpu/intel/model_206ax
+			register "c1_acpower" = "1"
+			register "c1_battery" = "1"
+			register "c2_acpower" = "3"
+			register "c2_battery" = "3"
+			register "c3_acpower" = "5"
+			register "c3_battery" = "5"
+			device lapic 0xacac off
+			end
+		end
+	end
+	device domain 0x0 on
+		device pci 00.0 on # Host bridge Host bridge
+			subsystemid 0x17aa 0x2205
+		end
+		device pci 01.0 off # PCIe Bridge for discrete graphics
+		end
+		device pci 02.0 on # Internal graphics VGA controller
+			subsystemid 0x17aa 0x2205
+		end
+		chip southbridge/intel/bd82x6x # Intel Series 6 Cougar Point PCH
+			register "c2_latency" = "0x0065"
+			register "docking_supported" = "1"
+			register "gen1_dec" = "0x00000000"
+			register "gen2_dec" = "0x000c0701"
+			register "gen3_dec" = "0x000c0069"
+			register "gen4_dec" = "0x000c06a1"
+			register "gpi13_routing" = "2"
+			register "gpi7_routing" = "2"
+			register "p_cnt_throttling_supported" = "1"
+			register "pcie_hotplug_map" = "{ 0, 1, 0, 1, 0, 0, 0, 0 }"
+			register "pcie_port_coalesce" = "1"
+			register "sata_interface_speed_support" = "0x3"
+			register "sata_port_map" = "0x11"
+			register "superspeed_capable_ports" = "0x0000000f"
+			register "xhci_overcurrent_mapping" = "0x00000c03"
+			register "xhci_switchable_ports" = "0x0000000f"
+			device pci 14.0 on # USB 3.0 Controller
+				subsystemid 0x17aa 0x2205
+			end
+			device pci 16.0 off # Management Engine Interface 1
+			end
+			device pci 16.1 off # Management Engine Interface 2
+			end
+			device pci 16.2 off # Management Engine IDE-R
+			end
+			device pci 16.3 off # Management Engine KT
+			end
+			device pci 19.0 off # Intel Gigabit Ethernet
+			end
+			device pci 1a.0 on # USB2 EHCI #2
+				subsystemid 0x17aa 0x2205
+			end
+			device pci 1b.0 on # High Definition Audio Audio controller
+				subsystemid 0x17aa 0x2205
+			end
+			device pci 1c.0 on # PCIe Port #1
+				subsystemid 0x17aa 0x2205
+			end
+			device pci 1c.1 on # PCIe Port #2
+				subsystemid 0x17aa 0x2205
+			end
+			device pci 1c.2 off # PCIe Port #3
+			end
+			device pci 1c.3 on # PCIe Port #4
+				subsystemid 0x17aa 0x2205
+			end
+			device pci 1c.4 off # PCIe Port #5
+			end
+			device pci 1c.5 off # PCIe Port #6
+			end
+			device pci 1c.6 off # PCIe Port #7
+			end
+			device pci 1c.7 off # PCIe Port #8
+			end
+			device pci 1d.0 on # USB2 EHCI #1
+				subsystemid 0x17aa 0x2205
+			end
+			device pci 1e.0 off # PCI bridge
+			end
+			device pci 1f.0 on # LPC bridge PCI-LPC bridge
+				subsystemid 0x17aa 0x2205
+				chip drivers/pc80/tpm
+					device pnp 0c31.0 on end
+				end
+			end
+			device pci 1f.2 on # SATA Controller 1
+				subsystemid 0x17aa 0x2205
+			end
+			device pci 1f.3 on # SMBus
+				subsystemid 0x17aa 0x2205
+				chip drivers/i2c/at24rf08c # eeprom, 8 virtual devices, same chip
+					device i2c 54 on
+					end
+					device i2c 55 on
+					end
+					device i2c 56 on
+					end
+					device i2c 57 on
+					end
+					device i2c 5c on
+					end
+					device i2c 5d on
+					end
+					device i2c 5e on
+					end
+					device i2c 5f on
+					end
+				end
+			end
+			device pci 1f.5 off # SATA Controller 2
+			end
+			device pci 1f.6 off # Thermal
+			end
+		end
+	end
+end
diff --git a/src/mainboard/lenovo/s230u/dsdt.asl b/src/mainboard/lenovo/s230u/dsdt.asl
new file mode 100644
index 0000000000..6cf26fd20f
--- /dev/null
+++ b/src/mainboard/lenovo/s230u/dsdt.asl
@@ -0,0 +1,31 @@
+#define BRIGHTNESS_UP \_SB.PCI0.GFX0.INCB
+#define BRIGHTNESS_DOWN \_SB.PCI0.GFX0.DECB
+#define ACPI_VIDEO_DEVICE \_SB.PCI0.GFX0
+#define EC_LENOVO_H8_ME_WORKAROUND 1
+#define THINKPAD_EC_GPE 23
+DefinitionBlock(
+	"dsdt.aml",
+	"DSDT",
+	0x03,		// DSDT revision: ACPI v3.0
+	"COREv4",	// OEM id
+	"COREBOOT",	// OEM table id
+	0x20141018	// OEM revision
+)
+{
+	#include "acpi/platform.asl"
+	#include "acpi/gpe.asl"
+	#include <cpu/intel/model_206ax/acpi/cpu.asl>
+	#include <southbridge/intel/bd82x6x/acpi/platform.asl>
+	#include <southbridge/intel/bd82x6x/acpi/globalnvs.asl>
+	#include <southbridge/intel/bd82x6x/acpi/sleepstates.asl>
+
+	Scope (\_SB) {
+		Device (PCI0)
+		{
+			#include <northbridge/intel/sandybridge/acpi/sandybridge.asl>
+			#include <southbridge/intel/bd82x6x/acpi/pch.asl>
+			#include <southbridge/intel/bd82x6x/acpi/default_irq_route.asl>
+			#include <drivers/intel/gma/acpi/default_brightness_levels.asl>
+		}
+	}
+}
diff --git a/src/mainboard/lenovo/s230u/ec.c b/src/mainboard/lenovo/s230u/ec.c
new file mode 100644
index 0000000000..f3e01b68be
--- /dev/null
+++ b/src/mainboard/lenovo/s230u/ec.c
@@ -0,0 +1,49 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2014 Alexandru Gagniuc <mr.nuke.me@gmail.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; 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 "ec.h"
+#include <ec/compal/ene932/ec.h>
+
+/* The keyboard matrix tells the EC how the keyboard is wired internally */
+static void set_keyboard_matrix_us(void)
+{
+	ec_kbc_write_cmd(0x59);
+	ec_kbc_write_ib(0xE5);
+}
+
+/* Tell EC to operate in APM mode. Events generate SMIs instead of SCIs */
+static void enter_apm_mode(void)
+{
+	ec_kbc_write_cmd(0x59);
+	ec_kbc_write_ib(0xE9);
+}
+
+void lenovo_s230u_ec_init(void)
+{
+	set_keyboard_matrix_us();
+
+	/*
+	 * The EC has a special "blinking Caps Lock LED" mode which it normally
+	 * enters when it believes the OS is not responding. It occasionally
+	 * disables battery charging when in this mode, although other
+	 * functionality is unaffected. Although the EC starts in APM mode by
+	 * default, it only leaves the "blinking Caps Lock LED" mode after
+	 * receiving the following command.
+	 */
+	enter_apm_mode();
+
+	/* Enable external USB port power. */
+	ec_mm_set_bit(0x3b, 4);
+}
diff --git a/src/mainboard/lenovo/s230u/ec.h b/src/mainboard/lenovo/s230u/ec.h
new file mode 100644
index 0000000000..afb6cdc8fb
--- /dev/null
+++ b/src/mainboard/lenovo/s230u/ec.h
@@ -0,0 +1,19 @@
+/*
+ * Copyright (C) 2014 Alexandru Gagniuc <mr.nuke.me@gmail.com>
+ * Subject to the GNU GPL v2, or (at your option) any later version.
+ */
+
+#ifndef _MAINBOARD_LENOVO_S230U_EC_H
+#define _MAINBOARD_LENOVO_S230U_EC_H
+
+#ifndef __SMM__
+void lenovo_s230u_ec_init(void);
+#endif
+
+#define ECMM(x) (*((volatile u8 *)(CONFIG_EC_BASE_ADDRESS + x)))
+#define ec_mm_read(addr) (ECMM(0x100 + addr))
+#define ec_mm_write(addr, data) (ECMM(0x100 + addr) = data)
+#define ec_mm_set_bit(addr, bit) (ECMM(0x100 + addr) |= 1 << bit)
+#define ec_mm_clr_bit(addr, bit) (ECMM(0x100 + addr) &= ~(1 << bit))
+
+#endif /* _MAINBOARD_LENOVO_S230U_EC_H   */
diff --git a/src/mainboard/lenovo/s230u/gpio.c b/src/mainboard/lenovo/s230u/gpio.c
new file mode 100644
index 0000000000..a0e30c26e7
--- /dev/null
+++ b/src/mainboard/lenovo/s230u/gpio.c
@@ -0,0 +1,254 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2017 Tobias Diedrich <ranma+coreboot@tdiedrich.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; 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 <southbridge/intel/common/gpio.h>
+
+const struct pch_gpio_set1 pch_gpio_set1_mode = {
+	.gpio0 = GPIO_MODE_GPIO,
+	.gpio1 = GPIO_MODE_GPIO,
+	.gpio2 = GPIO_MODE_GPIO,  /* POUT1# (from palm sensor 1) */
+	.gpio3 = GPIO_MODE_GPIO,
+	.gpio4 = GPIO_MODE_GPIO,  /* POUT2# (from palm sensor 2) */
+	.gpio5 = GPIO_MODE_GPIO,
+	.gpio6 = GPIO_MODE_GPIO,  /* PA0_WAKEUP (To sensor hub PA0) */
+	.gpio7 = GPIO_MODE_GPIO,  /* EC_SCI# (from EC) */
+	.gpio8 = GPIO_MODE_GPIO,  /* EC_SMI# (from EC) */
+	.gpio9 = GPIO_MODE_GPIO,
+	.gpio10 = GPIO_MODE_GPIO,
+	.gpio11 = GPIO_MODE_GPIO,
+	.gpio12 = GPIO_MODE_GPIO,
+	.gpio13 = GPIO_MODE_GPIO,
+	.gpio14 = GPIO_MODE_GPIO,
+	.gpio15 = GPIO_MODE_GPIO,  /* EC_LID_OUT# */
+	.gpio16 = GPIO_MODE_GPIO,  /* RAM_ID2 */
+	.gpio17 = GPIO_MODE_GPIO,
+	.gpio20 = GPIO_MODE_GPIO,
+	.gpio21 = GPIO_MODE_GPIO,
+	.gpio22 = GPIO_MODE_GPIO,
+	.gpio23 = GPIO_MODE_GPIO,
+	.gpio24 = GPIO_MODE_GPIO,
+	.gpio26 = GPIO_MODE_GPIO,
+	.gpio27 = GPIO_MODE_GPIO,  /* mSATA_DET# (from WWAN/mSATA mPCIe pin 51) */
+	.gpio28 = GPIO_MODE_GPIO,
+	.gpio29 = GPIO_MODE_GPIO,
+	.gpio30 = GPIO_MODE_GPIO,
+	.gpio31 = GPIO_MODE_GPIO,
+};
+
+const struct pch_gpio_set1 pch_gpio_set1_direction = {
+	.gpio0 = GPIO_DIR_OUTPUT,
+	.gpio1 = GPIO_DIR_OUTPUT,
+	.gpio2 = GPIO_DIR_INPUT,
+	.gpio3 = GPIO_DIR_OUTPUT,
+	.gpio4 = GPIO_DIR_INPUT,
+	.gpio5 = GPIO_DIR_OUTPUT,
+	.gpio6 = GPIO_DIR_INPUT,
+	.gpio7 = GPIO_DIR_INPUT,
+	.gpio8 = GPIO_DIR_INPUT,
+	.gpio9 = GPIO_DIR_OUTPUT,
+	.gpio10 = GPIO_DIR_OUTPUT,
+	.gpio11 = GPIO_DIR_OUTPUT,
+	.gpio12 = GPIO_DIR_OUTPUT,
+	.gpio13 = GPIO_DIR_OUTPUT,
+	.gpio14 = GPIO_DIR_OUTPUT,
+	.gpio15 = GPIO_DIR_INPUT,
+	.gpio16 = GPIO_DIR_INPUT,
+	.gpio17 = GPIO_DIR_INPUT,
+	.gpio20 = GPIO_DIR_OUTPUT,
+	.gpio21 = GPIO_DIR_OUTPUT,
+	.gpio22 = GPIO_DIR_OUTPUT,
+	.gpio23 = GPIO_DIR_OUTPUT,
+	.gpio24 = GPIO_DIR_OUTPUT,
+	.gpio26 = GPIO_DIR_OUTPUT,
+	.gpio27 = GPIO_DIR_INPUT,
+	.gpio28 = GPIO_DIR_OUTPUT,
+	.gpio29 = GPIO_DIR_OUTPUT,
+	.gpio30 = GPIO_DIR_OUTPUT,
+	.gpio31 = GPIO_DIR_INPUT,
+};
+
+const struct pch_gpio_set1 pch_gpio_set1_level = {
+	.gpio0 = GPIO_LEVEL_HIGH,
+	.gpio1 = GPIO_LEVEL_HIGH,
+	.gpio3 = GPIO_LEVEL_HIGH,
+	.gpio5 = GPIO_LEVEL_HIGH,
+	.gpio9 = GPIO_LEVEL_HIGH,
+	.gpio10 = GPIO_LEVEL_HIGH,
+	.gpio11 = GPIO_LEVEL_HIGH,
+	.gpio12 = GPIO_LEVEL_HIGH,
+	.gpio13 = GPIO_LEVEL_HIGH,
+	.gpio14 = GPIO_LEVEL_HIGH,
+	.gpio20 = GPIO_LEVEL_HIGH,
+	.gpio21 = GPIO_LEVEL_HIGH,
+	.gpio22 = GPIO_LEVEL_HIGH,
+	.gpio23 = GPIO_LEVEL_HIGH,
+	.gpio24 = GPIO_LEVEL_HIGH,
+	.gpio26 = GPIO_LEVEL_HIGH,
+	.gpio28 = GPIO_LEVEL_HIGH,
+	.gpio29 = GPIO_LEVEL_LOW,
+	.gpio30 = GPIO_LEVEL_HIGH,
+};
+
+const struct pch_gpio_set1 pch_gpio_set1_reset = {
+	.gpio24 = GPIO_RESET_RSMRST,
+};
+
+const struct pch_gpio_set1 pch_gpio_set1_invert = {
+	.gpio2 = GPIO_INVERT,
+	.gpio4 = GPIO_INVERT,
+	.gpio6 = GPIO_NO_INVERT,
+	.gpio7 = GPIO_INVERT,
+	.gpio8 = GPIO_INVERT,
+	.gpio15 = GPIO_INVERT,
+	.gpio16 = GPIO_NO_INVERT,
+	.gpio17 = GPIO_NO_INVERT,
+	.gpio27 = GPIO_NO_INVERT,
+	.gpio31 = GPIO_NO_INVERT,
+};
+
+const struct pch_gpio_set1 pch_gpio_set1_blink = {
+};
+
+const struct pch_gpio_set2 pch_gpio_set2_mode = {
+	.gpio33 = GPIO_MODE_GPIO,  /* PCH_WLBT_OFF_5# (to WLAN mPCIe pin 5) */
+	/* GPIO34 marked as PCH_BT_ON#, but is native (STP_PCI#) */
+	.gpio35 = GPIO_MODE_GPIO,  /* 3G_DET# (from WWAN/mSATA mPCIe pin 43) */
+	.gpio36 = GPIO_MODE_GPIO,  /* PCH_WLBT_OFF_51# (to WLAN mPCIe pin 51) */
+	.gpio37 = GPIO_MODE_GPIO,
+	.gpio38 = GPIO_MODE_GPIO,
+	.gpio39 = GPIO_MODE_GPIO,  /* 3G_OFF# (to WWAN/mSATA mPCIe pin 20) */
+	.gpio41 = GPIO_MODE_GPIO,
+	.gpio42 = GPIO_MODE_GPIO,
+	.gpio43 = GPIO_MODE_GPIO,
+	.gpio44 = GPIO_MODE_GPIO,
+	.gpio45 = GPIO_MODE_GPIO,
+	.gpio46 = GPIO_MODE_GPIO,
+	.gpio48 = GPIO_MODE_GPIO,  /* RAM_ID3 */
+	.gpio49 = GPIO_MODE_GPIO,
+	.gpio50 = GPIO_MODE_GPIO,
+	.gpio51 = GPIO_MODE_GPIO,
+	.gpio52 = GPIO_MODE_GPIO,
+	.gpio53 = GPIO_MODE_GPIO,
+	.gpio54 = GPIO_MODE_GPIO,
+	/* GPIO55 marekd as WL_OFF#, but is native (GNT3#) */
+	.gpio56 = GPIO_MODE_GPIO,
+	.gpio57 = GPIO_MODE_GPIO,
+	.gpio60 = GPIO_MODE_GPIO,  /* DRAMRST_CNTRL_PCH */
+};
+
+const struct pch_gpio_set2 pch_gpio_set2_direction = {
+	.gpio33 = GPIO_DIR_OUTPUT,
+	.gpio35 = GPIO_DIR_INPUT,
+	.gpio36 = GPIO_DIR_OUTPUT,
+	.gpio37 = GPIO_DIR_OUTPUT,
+	.gpio38 = GPIO_DIR_INPUT,
+	.gpio39 = GPIO_DIR_OUTPUT,
+	.gpio41 = GPIO_DIR_OUTPUT,
+	.gpio42 = GPIO_DIR_OUTPUT,
+	.gpio43 = GPIO_DIR_OUTPUT,
+	.gpio44 = GPIO_DIR_OUTPUT,
+	.gpio45 = GPIO_DIR_OUTPUT,
+	.gpio46 = GPIO_DIR_OUTPUT,
+	.gpio48 = GPIO_DIR_INPUT,
+	.gpio49 = GPIO_DIR_OUTPUT,
+	.gpio50 = GPIO_DIR_OUTPUT,
+	.gpio51 = GPIO_DIR_OUTPUT,
+	.gpio52 = GPIO_DIR_OUTPUT,
+	.gpio53 = GPIO_DIR_OUTPUT,
+	.gpio54 = GPIO_DIR_OUTPUT,
+	.gpio56 = GPIO_DIR_OUTPUT,
+	.gpio57 = GPIO_DIR_INPUT,
+	.gpio60 = GPIO_DIR_OUTPUT,
+};
+
+const struct pch_gpio_set2 pch_gpio_set2_level = {
+	.gpio33 = GPIO_LEVEL_HIGH,
+	.gpio36 = GPIO_LEVEL_HIGH,
+	.gpio37 = GPIO_LEVEL_HIGH,
+	.gpio39 = GPIO_LEVEL_LOW,
+	.gpio41 = GPIO_LEVEL_HIGH,
+	.gpio42 = GPIO_LEVEL_HIGH,
+	.gpio43 = GPIO_LEVEL_HIGH,
+	.gpio44 = GPIO_LEVEL_HIGH,
+	.gpio45 = GPIO_LEVEL_HIGH,
+	.gpio46 = GPIO_LEVEL_LOW,
+	.gpio49 = GPIO_LEVEL_HIGH,
+	.gpio50 = GPIO_LEVEL_LOW,
+	.gpio51 = GPIO_LEVEL_HIGH,
+	.gpio52 = GPIO_LEVEL_HIGH,
+	.gpio53 = GPIO_LEVEL_HIGH,
+	.gpio54 = GPIO_LEVEL_LOW,
+	.gpio56 = GPIO_LEVEL_HIGH,
+	.gpio60 = GPIO_LEVEL_HIGH,
+};
+
+const struct pch_gpio_set2 pch_gpio_set2_reset = {
+};
+
+const struct pch_gpio_set3 pch_gpio_set3_mode = {
+	.gpio64 = GPIO_MODE_GPIO,
+	.gpio65 = GPIO_MODE_GPIO,
+	.gpio68 = GPIO_MODE_GPIO,
+	.gpio69 = GPIO_MODE_GPIO,
+	.gpio70 = GPIO_MODE_GPIO,  /* RAM_ID1 */
+	.gpio71 = GPIO_MODE_GPIO,  /* RAM_ID0 */
+	.gpio72 = GPIO_MODE_GPIO,
+	.gpio74 = GPIO_MODE_GPIO,
+};
+
+const struct pch_gpio_set3 pch_gpio_set3_direction = {
+	.gpio64 = GPIO_DIR_OUTPUT,
+	.gpio65 = GPIO_DIR_OUTPUT,
+	.gpio68 = GPIO_DIR_OUTPUT,
+	.gpio69 = GPIO_DIR_INPUT,
+	.gpio70 = GPIO_DIR_INPUT,
+	.gpio71 = GPIO_DIR_INPUT,
+	.gpio72 = GPIO_DIR_OUTPUT,
+	.gpio74 = GPIO_DIR_OUTPUT,
+};
+
+const struct pch_gpio_set3 pch_gpio_set3_level = {
+	.gpio64 = GPIO_LEVEL_HIGH,
+	.gpio65 = GPIO_LEVEL_HIGH,
+	.gpio68 = GPIO_LEVEL_LOW,
+	.gpio72 = GPIO_LEVEL_HIGH,
+	.gpio74 = GPIO_LEVEL_HIGH,
+};
+
+const struct pch_gpio_set3 pch_gpio_set3_reset = {
+};
+
+const struct pch_gpio_map mainboard_gpio_map = {
+	.set1 = {
+		.mode		= &pch_gpio_set1_mode,
+		.direction	= &pch_gpio_set1_direction,
+		.level		= &pch_gpio_set1_level,
+		.blink		= &pch_gpio_set1_blink,
+		.invert		= &pch_gpio_set1_invert,
+		.reset		= &pch_gpio_set1_reset,
+	},
+	.set2 = {
+		.mode		= &pch_gpio_set2_mode,
+		.direction	= &pch_gpio_set2_direction,
+		.level		= &pch_gpio_set2_level,
+		.reset		= &pch_gpio_set2_reset,
+	},
+	.set3 = {
+		.mode		= &pch_gpio_set3_mode,
+		.direction	= &pch_gpio_set3_direction,
+		.level		= &pch_gpio_set3_level,
+		.reset		= &pch_gpio_set3_reset,
+	},
+};
diff --git a/src/mainboard/lenovo/s230u/hda_verb.c b/src/mainboard/lenovo/s230u/hda_verb.c
new file mode 100644
index 0000000000..f2da2c4756
--- /dev/null
+++ b/src/mainboard/lenovo/s230u/hda_verb.c
@@ -0,0 +1,129 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2011 The ChromiumOS Authors.  All rights reserved.
+ * Copyright (C) 2014 Vladimir Serbinenko
+ * Copyright (C) 2017 Tobias Diedrich
+ *
+ * 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 <device/azalia_device.h>
+
+const u32 cim_verb_data[] = {
+	/* coreboot specific header */
+	0x10ec0269,	// Codec Vendor / Device ID: Realtek ALC269VC
+	0x17aa21fa,	// Subsystem ID
+	0x0000000c,	// Number of 4 dword sets
+
+	/* Bits 31:28 - Codec Address */
+	/* Bits 27:20 - NID */
+	/* Bits 19:8 - Verb ID */
+	/* Bits 7:0  - Payload */
+
+	/* NID 0x01 - NodeInfo */
+	AZALIA_SUBVENDOR(0x0, 0x17AA21FA),
+
+	/*
+	 * PIN_CFG:
+	 * 31:30 Port connectivity
+	 *   00 Connected to jack
+	 *   01 No physical connection
+	 *   10 Fixed function (integrated speaker/mic)
+	 *   11 Jack + internal
+	 * 29:24 Location
+	 *   See HDA spec for full matrix
+	 * 23:20 Default device
+	 *   0 Line out  4 S/PDIF out     8 Line in    c S/PDIF in
+	 *   1 Speaker   5 Digital out    9 Aux        d Digital in
+	 *   2 HP out    6 Modem line     a Mic in     e Reserved
+	 *   3 CD        7 Modem handse   b Telephony  f Other
+	 * 19:16 Connection type
+	 *   0 Unknown    4 RCA      8 Multichannel analog DIN
+	 *   1 1/8" jack  5 Optical  9 XLR
+	 *   2 1/4" jack  6 Digital  a RJ-11
+	 *   3 ATAPI      7 Analog   b Combination     f Other
+	 * 15:12 Color
+	 *   0 Unknown  4 Green   8 Purple
+	 *   1 Black    5 Red     9 Pink
+	 *   2 Grey     6 Orange  a-d Reserved
+	 *   3 Blue     7 Yellow  e White  f Other
+	 * 11:8  Misc
+	 *   bit0 Jack detect override  1-3 Reserved
+	 * 7:4   Default association
+	 *   0 Reserved/Not initialized
+	 *   f Lowest priority
+	 * 3:0   Sequence
+	 *   For stream channel to in/out mapping
+	 */
+
+	/*
+	 * NID 0x12 - Digital MIC
+	 * Fixed function, mic in, digital
+	 */
+	AZALIA_PIN_CFG(0x0, 0x12, 0x90a60940),
+	/*
+	 * NID 0x14 - SPK out
+	 * Fixed function, speaker, analog
+	 */
+	AZALIA_PIN_CFG(0x0, 0x14, 0x90170110),
+	/*
+	 * NID 0x15 - HP out
+	 * Location left, headphone out, 1/8" jack, black
+	 */
+	AZALIA_PIN_CFG(0x0, 0x15, 0x03211020),
+	/* NID 0x17 - ?  (Unconnected) */
+	AZALIA_PIN_CFG(0x0, 0x17, 0x411111f0),
+	/*
+	 * NID 0x18 - MIC1 in
+	 * Location left, mic in, 1/8" jack, black
+	 */
+	AZALIA_PIN_CFG(0x0, 0x18, 0x03a11830),
+	/* NID 0x19 - MIC2 in (Unconnected) */
+	AZALIA_PIN_CFG(0x0, 0x19, 0x411111f0),
+	/* NID 0x1a - Line1 in (Unconnected) */
+	AZALIA_PIN_CFG(0x0, 0x1a, 0x411111f0),
+	/* NID 0x1b - Line2 in (Unconnected) */
+	AZALIA_PIN_CFG(0x0, 0x1b, 0x411111f0),
+	/* NID 0x1d - PCBEEP */
+	AZALIA_PIN_CFG(0x0, 0x1d, 0x40148605),
+	/* NID 0x1e - S/PDIF out (Unconnected) */
+	AZALIA_PIN_CFG(0x0, 0x1e, 0x411111f0),
+
+	0x01470740,	// Enable output for NID 0x14 (Speaker out)
+	0x015707C0,	// Enable output & HP amp for NID 0x15 (HP out)
+	0x01870724,	// Enable Vrefout NID 0x18 (MIC1 in)
+	0x00170500,	// Set power state to D0
+
+	/* coreboot specific header */
+	0x80862806,	// Codec Vendor / Device ID: Intel PantherPoint HDMI
+	0x80860101,	// Subsystem ID
+	0x00000004,	// Number of IDs
+
+	/* NID 0x01, HDA Codec Subsystem ID Verb Table: 0x80860101 */
+	AZALIA_SUBVENDOR(0x3, 0x80860101),
+
+	/* Pin Complex (NID 0x05) Digital Out at Int HDMI */
+	AZALIA_PIN_CFG(0x3, 0x05, 0x18560010),
+
+	/* Pin Complex (NID 0x06) Digital Out at Int HDMI */
+	AZALIA_PIN_CFG(0x3, 0x06, 0x18560020),
+
+	/* Pin Complex (NID 0x07) Digital Out at Int HDMI */
+	AZALIA_PIN_CFG(0x3, 0x07, 0x58560030)
+};
+
+const u32 pc_beep_verbs[] = {
+	/* Digital PCBEEP Gain: 0h=-9db, 1h=-6db ... 4h=+3db, 5h=+6db */
+	0x02177a00,
+};
+
+AZALIA_ARRAY_SIZES;
diff --git a/src/mainboard/lenovo/s230u/mainboard.c b/src/mainboard/lenovo/s230u/mainboard.c
new file mode 100644
index 0000000000..9ed2a4b14f
--- /dev/null
+++ b/src/mainboard/lenovo/s230u/mainboard.c
@@ -0,0 +1,93 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2011 Sven Schnelle <svens@stackframe.org>
+ * Copyright (C) 2012 Advanced Micro Devices, Inc.
+ * Copyright (C) 2017 Tobias Diedrich <ranma+coreboot@tdiedrich.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; 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/device.h>
+#include <console/console.h>
+#include <drivers/intel/gma/int15.h>
+#include <ec/acpi/ec.h>
+#include <southbridge/intel/bd82x6x/pch.h>
+#include <southbridge/intel/common/gpio.h>
+#include <string.h>
+#include <smbios.h>
+#include "ec.h"
+
+#include <arch/acpi.h>
+
+static void mainboard_init(device_t dev)
+{
+	RCBA32(0x38c8) = 0x00002005;
+	RCBA32(0x38c4) = 0x00802005;
+	RCBA32(0x38c0) = 0x00000007;
+}
+
+static u8 mainboard_fill_ec_version(char *buf, u8 buf_len)
+{
+	u8 i, c;
+	char str[16 + 1]; /* 16 ASCII chars + \0 */
+
+	/* Build ID */
+	for (i = 0; i < 8; i++) {
+		c = ec_mm_read(0xf0 + i);
+		if (c < 0x20 || c > 0x7f) {
+			i = snprintf(str, sizeof(str), "*INVALID");
+			break;
+		}
+		str[i] = c;
+	}
+
+	i = MIN(buf_len, i);
+	memcpy(buf, str, i);
+
+	return i;
+}
+
+static void mainboard_smbios_strings(
+	struct device *dev, struct smbios_type11 *t)
+{
+	char tpec[] = "IBM ThinkPad Embedded Controller -[                 ]-";
+	u16 fwvh, fwvl;
+
+	mainboard_fill_ec_version(tpec + 35, 17);
+	t->count = smbios_add_string(t->eos, tpec);
+
+	/* Apparently byteswapped compared to H8 */
+	fwvh = ec_mm_read(0xe8);
+	fwvl = ec_mm_read(0xe9);
+
+	printk(BIOS_INFO, "EC Firmware ID %.54s, Version %d.%d%d%c\n", tpec,
+	       fwvh >> 4, fwvh & 0x0f, fwvl >> 4, 0x41 + (fwvl & 0xf));
+}
+
+static void mainboard_enable(device_t dev)
+{
+	dev->ops->init = mainboard_init;
+	dev->ops->get_smbios_strings = mainboard_smbios_strings,
+
+	install_intel_vga_int15_handler(
+		GMA_INT15_ACTIVE_LFP_INT_LVDS,
+		GMA_INT15_PANEL_FIT_DEFAULT,
+		GMA_INT15_BOOT_DISPLAY_DEFAULT,
+		0);
+
+	if (!acpi_is_wakeup_s3())
+		lenovo_s230u_ec_init();
+}
+
+struct chip_operations mainboard_ops = {
+	.enable_dev = mainboard_enable,
+};
diff --git a/src/mainboard/lenovo/s230u/romstage.c b/src/mainboard/lenovo/s230u/romstage.c
new file mode 100644
index 0000000000..ce751653c2
--- /dev/null
+++ b/src/mainboard/lenovo/s230u/romstage.c
@@ -0,0 +1,127 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2017 Tobias Diedrich <ranma+coreboot@tdiedrich.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; 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 <stdint.h>
+#include <string.h>
+#include <cbfs.h>
+#include <lib.h>
+#include <timestamp.h>
+#include <arch/byteorder.h>
+#include <arch/io.h>
+#include <device/pci_def.h>
+#include <device/pnp_def.h>
+#include <cpu/x86/lapic.h>
+#include <arch/acpi.h>
+#include <console/console.h>
+#include "northbridge/intel/sandybridge/sandybridge.h"
+#include "northbridge/intel/sandybridge/raminit_native.h"
+#include "southbridge/intel/bd82x6x/pch.h"
+#include <southbridge/intel/common/gpio.h>
+#include <arch/cpu.h>
+#include <cpu/x86/msr.h>
+#include "ec.h"
+
+#define SPD_LEN 256
+
+void pch_enable_lpc(void)
+{
+	pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x82, 0x0c00);
+	pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x84, 0x00000000);
+	pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x88, 0x000c0701);
+	pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x8c, 0x000c0069);
+	pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x90, 0x000c06a1);
+	pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x80, 0x0000);
+	pci_write_config32(PCI_DEV(0, 0x1f, 0), 0xac, 0x00010000);
+
+	/* Memory map KB9012 EC registers */
+	pci_write_config32(
+		PCI_DEV(0, 0x1f, 0), 0x98,
+		CONFIG_EC_BASE_ADDRESS | 1);
+	pci_write_config16(PCI_DEV(0, 0x1f, 0), 0xd8, 0xffc0);
+
+	#ifdef CONFIG_USBDEBUG
+	/* Enable external USB port power. */
+	ec_mm_set_bit(0x3b, 4);
+	#endif
+}
+
+void rcba_config(void)
+{
+	/* Disable devices.  */
+	RCBA32(0x3414) = 0x00000020;
+	RCBA32(0x3418) = 0x17f41fe3;
+
+}
+const struct southbridge_usb_port mainboard_usb_ports[] = {
+	{ 1, 1, 0 },
+	{ 1, 0, 0 },
+	{ 1, 1, 1 },
+	{ 1, 0, 1 },
+	{ 1, 1, 2 },
+	{ 1, 0, 2 },
+	{ 0, 0, 3 },
+	{ 0, 1, 3 },
+	{ 1, 0, 4 },
+	{ 1, 1, 4 },
+	{ 1, 1, 5 },
+	{ 1, 1, 5 },
+	{ 1, 1, 6 },
+	{ 1, 1, 6 },
+};
+
+void mainboard_early_init(int s3resume)
+{
+}
+
+void mainboard_config_superio(void)
+{
+}
+
+static const char *mainboard_spd_names[9] = {
+	"ELPIDA 4GB",
+	"SAMSUNG 4GB",
+	"HYNIX 4GB",
+	"ELPIDA 8GB",
+	"SAMSUNG 8GB",
+	"HYNIX 8GB",
+	"ELPIDA 2GB",
+	"SAMSUNG 2GB",
+	"HYNIX 2GB",
+};
+
+void mainboard_get_spd(spd_raw_data *spd, bool id_only)
+{
+	void *spd_file;
+	size_t spd_file_len = 0;
+	const int spd_gpios[] = {71, 70, 16, 48, -1};
+
+	u32 spd_index = get_gpios(spd_gpios);
+	if (spd_index >= ARRAY_SIZE(mainboard_spd_names)) {
+		/* Fallback to pessimistic 2GB image (ELPIDA 2GB) */
+		spd_index = 6;
+	}
+
+	printk(BIOS_INFO, "SPD index %d (%s)\n",
+		spd_index, mainboard_spd_names[spd_index]);
+
+	/* C0S0 is a soldered RAM with no real SPD. Use stored SPD.  */
+	spd_file = cbfs_boot_map_with_leak("spd.bin", CBFS_TYPE_SPD,
+		&spd_file_len);
+
+	if (!spd_file || spd_file_len < SPD_LEN * spd_index + SPD_LEN)
+		die("SPD data not found.");
+
+	memcpy(spd, spd_file + SPD_LEN * spd_index, SPD_LEN);
+}
diff --git a/src/mainboard/lenovo/s230u/smihandler.c b/src/mainboard/lenovo/s230u/smihandler.c
new file mode 100644
index 0000000000..755f176e91
--- /dev/null
+++ b/src/mainboard/lenovo/s230u/smihandler.c
@@ -0,0 +1,140 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2008-2009 coresystems GmbH
+ * Copyright (C) 2014 Vladimir Serbinenko
+ * Copyright (C) 2017 Tobias Diedrich <ranma+coreboot@tdiedrich.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; 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 "ec.h"
+
+#include <arch/io.h>
+#include <console/console.h>
+#include <cpu/x86/smm.h>
+#include <delay.h>
+#include <ec/acpi/ec.h>
+#include <ec/compal/ene932/ec.h>
+#include <southbridge/intel/bd82x6x/pch.h>
+
+#define GPE_PALMDET1	2
+#define GPE_PALMDET2	4
+#define GPE_EC_SCI	7
+#define GPE_EC_SMI	8
+/* FIXME: check this */
+#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;
+}
+
+enum sleep_states {
+	S0 = 0,
+	S1 = 1,
+	S3 = 3,
+	S4 = 4,
+	S5 = 5,
+};
+
+enum ec_smi_event {
+	EC_SMI_EVENT_IDLE = 0x80,
+	EC_SMI_BATTERY_LOW = 0xb3,
+};
+
+/* Tell EC to operate in APM mode. Events generate SMIs instead of SCIs. */
+static void ec_enter_apm_mode(void)
+{
+	ec_kbc_write_cmd(0x59);
+	ec_kbc_write_ib(0xE9);
+}
+/* Tell EC to operate in ACPI mode, thus generating SCIs on events, not SMIs. */
+static void ec_enter_acpi_mode(void)
+{
+	ec_kbc_write_cmd(0x59);
+	ec_kbc_write_ib(0xE8);
+}
+
+static uint8_t ec_get_smi_event(void)
+{
+	ec_kbc_write_cmd(0x56);
+	return ec_kbc_read_ob();
+}
+
+static void ec_process_smi(uint8_t src)
+{
+	/*
+	 * Reading the SMI source satisfies the EC in terms of responding to
+	 * the event, regardless of whether we take an action or not.
+	 */
+
+	printk(BIOS_DEBUG, "Unhandled EC_SMI event 0x%x\n", src);
+}
+
+static void handle_ec_smi(void)
+{
+	uint8_t src;
+
+	while ((src = ec_get_smi_event()) != EC_SMI_EVENT_IDLE)
+		ec_process_smi(src);
+}
+
+void mainboard_smi_gpi(u32 gpi_sts)
+{
+	if (gpi_sts & (1 << GPE_EC_SMI))
+		handle_ec_smi();
+}
+
+int mainboard_smi_apmc(u8 data)
+{
+	printk(BIOS_INFO, "mainboard_smi_apmc(%02x)\n", data);
+
+	switch (data) {
+	case APM_CNT_ACPI_ENABLE:
+		printk(BIOS_DEBUG, "Enable ACPI mode\n");
+		ec_enter_acpi_mode();
+		gpi_route_interrupt(GPE_EC_SCI, GPI_IS_SCI);
+		gpi_route_interrupt(GPE_PALMDET1, GPI_IS_SCI);
+		gpi_route_interrupt(GPE_PALMDET2, GPI_IS_SCI);
+		break;
+	case APM_CNT_ACPI_DISABLE:
+		printk(BIOS_DEBUG, "Disable ACPI mode\n");
+		ec_enter_apm_mode();
+		gpi_route_interrupt(GPE_EC_SCI, GPI_IS_SMI);
+		break;
+	default:
+		printk(BIOS_DEBUG, "Unhandled ACPI command: 0x%x\n", data);
+	}
+	return 0;
+}
+
+void mainboard_smi_sleep(u8 slp_typ)
+{
+	if (slp_typ == S3) {
+		u8 ec_wake = ec_read(0x32);
+		/* If EC wake events are enabled, enable wake on EC WAKE GPE. */
+		if (ec_wake & 0x14)
+			gpi_route_interrupt(GPE_EC_WAKE, GPI_IS_SCI);
+	}
+}
diff --git a/src/mainboard/lenovo/s230u/spd/elpida_2gb.spd.hex b/src/mainboard/lenovo/s230u/spd/elpida_2gb.spd.hex
new file mode 100644
index 0000000000..c6e0477ff1
--- /dev/null
+++ b/src/mainboard/lenovo/s230u/spd/elpida_2gb.spd.hex
@@ -0,0 +1,16 @@
+92 10 0b 03 03 11 03 0a 03 52 01 08 0c 00 7c 00
+69 78 69 3c 69 11 20 89 00 05 3c 3c 01 68 83 01
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 02 fe 00 00 00 00 00 00 00 f0 61
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 02 fe 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
diff --git a/src/mainboard/lenovo/s230u/spd/elpida_4gb.spd.hex b/src/mainboard/lenovo/s230u/spd/elpida_4gb.spd.hex
new file mode 100644
index 0000000000..b15d051707
--- /dev/null
+++ b/src/mainboard/lenovo/s230u/spd/elpida_4gb.spd.hex
@@ -0,0 +1,16 @@
+92 10 0b 03 04 19 02 0a 03 52 01 08 0c 00 7e 00
+69 78 69 30 69 11 20 89 20 08 3c 3c 00 f0 83 81
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 02 fe 00 00 00 00 00 00 00 b1 81
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 02 fe 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
diff --git a/src/mainboard/lenovo/s230u/spd/elpida_8gb.spd.hex b/src/mainboard/lenovo/s230u/spd/elpida_8gb.spd.hex
new file mode 100644
index 0000000000..067ff640c7
--- /dev/null
+++ b/src/mainboard/lenovo/s230u/spd/elpida_8gb.spd.hex
@@ -0,0 +1,16 @@
+92 10 0b 03 04 21 02 09 03 52 01 08 0c 00 7e 00
+69 78 69 30 69 11 20 89 20 08 3c 3c 00 f0 83 81
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 02 fe 00 00 00 00 00 00 00 db 89
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 02 fe 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
diff --git a/src/mainboard/lenovo/s230u/spd/hynix_2gb.spd.hex b/src/mainboard/lenovo/s230u/spd/hynix_2gb.spd.hex
new file mode 100644
index 0000000000..0f01da51d2
--- /dev/null
+++ b/src/mainboard/lenovo/s230u/spd/hynix_2gb.spd.hex
@@ -0,0 +1,16 @@
+92 11 0b 03 03 11 00 0a 03 52 01 08 0c 00 7e 00
+69 78 69 3c 69 11 20 89 00 05 3c 3c 01 68 83 01
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 0f 11 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 80 ad 01 00 00 00 00 00 00 f1 b8
+48 4d 54 33 32 35 53 36 44 46 52 36 43 2d 48 39
+20 20 4e 30 80 ad 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
diff --git a/src/mainboard/lenovo/s230u/spd/hynix_4gb.spd.hex b/src/mainboard/lenovo/s230u/spd/hynix_4gb.spd.hex
new file mode 100644
index 0000000000..9b39b751f4
--- /dev/null
+++ b/src/mainboard/lenovo/s230u/spd/hynix_4gb.spd.hex
@@ -0,0 +1,16 @@
+92 11 0b 03 04 19 02 0a 03 52 01 08 0c 00 7e 00
+69 78 69 3c 69 11 20 89 20 08 3c 3c 01 68 83 05
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 0f 11 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 80 ad 01 00 00 00 00 00 00 5a 5d
+48 4d 54 34 35 31 53 36 4d 46 52 36 41 2d 48 39
+20 20 4e 30 80 ad 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
diff --git a/src/mainboard/lenovo/s230u/spd/samsung_2gb.spd.hex b/src/mainboard/lenovo/s230u/spd/samsung_2gb.spd.hex
new file mode 100644
index 0000000000..bc8810f21f
--- /dev/null
+++ b/src/mainboard/lenovo/s230u/spd/samsung_2gb.spd.hex
@@ -0,0 +1,16 @@
+92 11 0b 03 03 11 02 0a 03 11 01 08 0c 00 3e 00
+69 78 69 30 69 11 20 89 00 05 3c 3c 00 f0 83 01
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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diff --git a/src/mainboard/lenovo/s230u/spd/samsung_4gb.spd.hex b/src/mainboard/lenovo/s230u/spd/samsung_4gb.spd.hex
new file mode 100644
index 0000000000..d75d0692c4
--- /dev/null
+++ b/src/mainboard/lenovo/s230u/spd/samsung_4gb.spd.hex
@@ -0,0 +1,16 @@
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