mainboard/lenovo/x230: Add ThinkPad x230s as a variant

The code is based on autoport and that for X230. Major differences are:
    - Only one DDR3 slot
    - HM77 PCH
    - M.2 socket instead of mini PCIe
    - No docking
    - No TPM

Tested:
    - CPU i5-3337U
    - 8GiB SO-DIMM
    - Camera
    - PCIe and USB2 on M.2 slot with A key for WLAN
    - SATA and USB2 (no SuperSpeed components) on M.2 slot with B key for WWAN
    - On board SDHCI connected to PCIe
    - USB3 ports
    - libgfxinit-based graphics init
    - NVRAM options for North and South bridges
    - Sound
    - ThinkPad EC
    - S3
    - Linux 4.9 within Debian GNU/Linux stable, loaded from SeaBIOS.

Untested:
    - Touch screen, which is said to work under ubuntu but not debian.

Change-Id: Id59cdc5479aaf70809dd1ca613056263661455eb
Signed-off-by: Bill XIE <persmule@hardenedlinux.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41390
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 26 insertions, 0 deletions

diff --git a/src/mainboard/lenovo/x230/variants/x230s/early_init.c b/src/mainboard/lenovo/x230/variants/x230s/early_init.c
new file mode 100644
index 0000000000..362e7fa64a
--- /dev/null
+++ b/src/mainboard/lenovo/x230/variants/x230s/early_init.c
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <northbridge/intel/sandybridge/raminit_native.h>
+#include <southbridge/intel/bd82x6x/pch.h>
+
+const struct southbridge_usb_port mainboard_usb_ports[] = {
+	{1, 3, 0},  /* SSP1: Right */
+	{1, 3, 1},  /* SSP2: Left, EHCI Debug */
+	{0, 1, 3},  /* SSP3 */
+	{1, 3, -1}, /* B0P4: WWAN USB */
+	{0, 1, 2},  /* B0P5 */
+	{0, 1, -1}, /* B0P6 */
+	{0, 1, -1}, /* B0P7 */
+	{0, 1, -1}, /* B0P8 */
+	{0, 1, -1}, /* B1P1 */
+	{0, 1, 5},  /* B1P2 */
+	{1, 1, -1}, /* B1P3: Fingerprint Reader */
+	{0, 1, -1}, /* B1P4 */
+	{1, 3, -1}, /* B1P5: WLAN USB */
+	{1, 1, -1}, /* B1P6: Camera */
+};
+
+void mainboard_get_spd(spd_raw_data *spd, bool id_only)
+{
+	read_spd(&spd[0], 0x50, id_only);
+}