Add Baytrail ChromeOS devices using variant scheme

Add new ChromeOS devices banjo, candy, clapper, glimmer, gnawty,
heli, kip, orco, quawks, squawks, sumo, swanky, and winky using
their common reference board (rambi) as a base.

Chromium sources used:
firmware-banjo-5216.334.B 32ec493 [chromeos: vboot_loader: Set...]
firmware-candy-5216.310.B 519ff11 [baytrail: Preserve VbNv around...]
firmware-clapper-5216.199.B 80d55e3 [baytrail: add code for...]
firmware-glimmer-5216.198.B fae0770 [baytrail: add code for...]
firmware-gnawty-5216.239.B 952adb7 [Gnawty/Olay: Add 2nd source...]
firmware-heli-5216.392.B f1f3604 [helis: Lock ME / TXE section...]
firmware-kip-5216.227.B db3c5d9 [kip: update spd for for MT41K256M16*]
firmware-orco-5216.362.B 76f1651 [Orco: Adjust rx delay for norm.]
firmware-quawks-5216.204.B edb60c9 [Quawks: Update SPD data]
firmware-squawks-5216.152.B c6573dc [Squawks: Update SPD data]
firmware-sumo-5216.382.B c62b6f23 [Ninja, Sumo: Add SPD source...]
firmware-swanky-5216.238.B 233b2a7 [Swanky: update SPD table]
firmware-winky-5216.265.B ce91ffc [Add to support HT Micron...]

The same basic cleanup/changes are made here as with the initial BYT
variant commit:
 - remove unused ACPI trackpad/touchscreen devices
 - correct I2C addresses in SMBIOS entries
 - clean up comment formatting
 - remove ACPI device for unused light sensor
 - switch I2C ACPI devices from edge to level triggered interrupts,
   for better compatibility/functionality (and to be consistent
   with other recently-upstreamed ChromeOS devices)
 - Micron 2GB SPD file for kip with updated values renamed to distinguish
   from same file used by other boards

Change-Id: Ic66f9b539afb5aff32c4c1a8563f6612f5a2927c
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/18164
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>

7 files changed, 486 insertions, 0 deletions

diff --git a/src/mainboard/google/rambi/variants/clapper/Makefile.inc b/src/mainboard/google/rambi/variants/clapper/Makefile.inc
new file mode 100644
index 0000000000..1a01c8ae86
--- /dev/null
+++ b/src/mainboard/google/rambi/variants/clapper/Makefile.inc
@@ -0,0 +1,45 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2014 Google Inc.
+##
+## 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.
+##
+
+SPD_BIN = $(obj)/spd.bin
+
+# Order matters for SPD sources. The following indicies
+# define the SPD data to use.
+# 0b000 - 4GiB total - 2 x 2GiB Micron MT41K256M16HA-125:E 1600MHz
+# 0b001 - 4GiB total - 2 x 2GiB Hynix  H5TC4G63AFR-PBA 1600MHz
+# 0b010 - 2GiB total - 2 x 1GiB Micron MT41K128M16JT-125:K 1600MHz
+# 0b011 - 2GiB total - 2 x 1GiB Hynix  H5TC2G63FFR-PBA 1600MHz
+# 0b100 - 2GiB total - 1 x 2GiB Micron MT41K256M16HA-125:E 1600MHz
+# 0b101 - 2GiB total - 1 x 2GiB Hynix  H5TC4G63AFR-PBA 1600MHz
+SPD_SOURCES = micron_2GiB_dimm_MT41K256M16HA-125
+SPD_SOURCES += hynix_2GiB_dimm_H5TC4G63AFR-PBA
+SPD_SOURCES += micron_1GiB_dimm_MT41K128M16JT-125
+SPD_SOURCES += hynix_1GiB_dimm_H5TC2G63FFR-PBA
+SPD_SOURCES += micron_2GiB_dimm_MT41K256M16HA-125
+SPD_SOURCES += hynix_2GiB_dimm_H5TC4G63AFR-PBA
+
+SPD_DEPS := $(foreach f, $(SPD_SOURCES), src/mainboard/$(MAINBOARDDIR)/spd/$(f).spd.hex)
+
+# Include spd ROM data
+$(SPD_BIN): $(SPD_DEPS)
+	for f in $+; \
+	  do for c in $$(cat $$f | grep -v ^#); \
+	    do printf $$(printf '\%o' 0x$$c); \
+	  done; \
+	done > $@
+
+cbfs-files-y += spd.bin
+spd.bin-file := $(SPD_BIN)
+spd.bin-type := spd
diff --git a/src/mainboard/google/rambi/variants/clapper/devicetree.cb b/src/mainboard/google/rambi/variants/clapper/devicetree.cb
new file mode 100644
index 0000000000..a95ddd144e
--- /dev/null
+++ b/src/mainboard/google/rambi/variants/clapper/devicetree.cb
@@ -0,0 +1,89 @@
+chip soc/intel/baytrail
+
+	# SATA port enable mask (2 ports)
+	register "sata_port_map" = "0x1"
+	register "sata_ahci" = "0x1"
+	register "ide_legacy_combined" = "0x0"
+
+	# Route USB ports to XHCI
+	register "usb_route_to_xhci" = "1"
+
+	# USB Port Disable Mask
+	register "usb2_port_disable_mask" = "0x0"
+	register "usb3_port_disable_mask" = "0x0"
+
+	# USB PHY settings
+	# TODO: These values are from Baytrail and need tuned for Clapper board
+	register "usb2_per_port_lane0" = "0x00049a09"
+	register "usb2_per_port_rcomp_hs_pullup0" = "0x0300401d"
+	register "usb2_per_port_lane1" = "0x00049a09"
+	register "usb2_per_port_rcomp_hs_pullup1" = "0x0300401d"
+	register "usb2_per_port_lane2" = "0x00049209"
+	register "usb2_per_port_rcomp_hs_pullup2" = "0x01004015"
+	register "usb2_per_port_lane3" = "0x00049a09"
+	register "usb2_per_port_rcomp_hs_pullup3" = "0x0300401d"
+
+	# LPE audio codec settings
+	register "lpe_codec_clk_freq" = "25" # 25MHz clock
+	register "lpe_codec_clk_num" = "0"   # PMC_PLT_CLK[0]
+
+	# SD Card controller
+	register "sdcard_cap_low" = "0x036864b2"
+	register "sdcard_cap_high" = "0x0"
+
+	# Enable devices in ACPI mode
+	register "scc_acpi_mode" = "1"
+
+	# Enable PIPEA as DP_C
+	register "gpu_pipea_port_select" = "2"		# DP_C
+	register "gpu_pipea_power_cycle_delay" = "5"	# 400ms
+	register "gpu_pipea_power_on_delay" = "2000"	# 200ms
+	register "gpu_pipea_light_on_delay" = "10"	# 1ms
+	register "gpu_pipea_power_off_delay" = "500"	# 50ms
+	register "gpu_pipea_light_off_delay" = "2000"	# 200ms
+
+	device cpu_cluster 0 on
+		device lapic 0 on end
+	end
+	device domain 0 on
+		device pci 00.0 on  end # SoC router
+		device pci 02.0 on  end # GFX
+		device pci 11.0 off end # SDIO
+		device pci 12.0 on  end # SD
+		device pci 13.0 on  end # SATA
+		device pci 14.0 on  end # XHCI
+		device pci 15.0 on  end # LPE
+		device pci 17.0 on  end # MMC
+		device pci 18.0 on  end # SIO_DMA1
+		device pci 18.1 on  end # I2C1
+		device pci 18.2 on  end # I2C2
+		device pci 18.3 off end # I2C3
+		device pci 18.4 off end # I2C4
+		device pci 18.5 on  end # I2C5
+		device pci 18.6 on  end # I2C6
+		device pci 18.7 off end # I2C7
+		device pci 1a.0 on  end # TXE
+		device pci 1b.0 off end # HDA
+		device pci 1c.0 on  end # PCIE_PORT1
+		device pci 1c.1 on  end # PCIE_PORT2
+		device pci 1c.2 off end # PCIE_PORT3
+		device pci 1c.3 off end # PCIE_PORT4
+		device pci 1d.0 on  end # EHCI
+		device pci 1e.0 on  end # SIO_DMA2
+		device pci 1e.1 off end # PWM1
+		device pci 1e.2 off end # PWM2
+		device pci 1e.3 off end # HSUART1
+		device pci 1e.4 off end # HSUART2
+		device pci 1e.5 off end # SPI
+		device pci 1f.0 on
+			chip ec/google/chromeec
+				# We only have one init function that
+				# we need to call to initialize the
+				# keyboard part of the EC.
+				device pnp ff.1 on # dummy address
+				end
+			end
+		end # LPC Bridge
+		device pci 1f.3 off end # SMBus
+	end
+end
diff --git a/src/mainboard/google/rambi/variants/clapper/gpio.c b/src/mainboard/google/rambi/variants/clapper/gpio.c
new file mode 100644
index 0000000000..385b40627a
--- /dev/null
+++ b/src/mainboard/google/rambi/variants/clapper/gpio.c
@@ -0,0 +1,230 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2014 Google Inc.
+ *
+ * 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 <stdlib.h>
+#include <soc/gpio.h>
+#include <mainboard/google/rambi/irqroute.h>
+
+/* NCORE GPIOs */
+static const struct soc_gpio_map gpncore_gpio_map[] = {
+	GPIO_FUNC2,	/* S0_NC00 - INT_HDMI_HPD - INT */
+	GPIO_FUNC2,	/* S0_NC01 - HDMI_DDCDATA_SW */
+	GPIO_FUNC2,	/* S0_NC02 - HDMI_DDCCLK_SW */
+	GPIO_NC,	/* S0_NC03 - NC */
+	GPIO_NC,	/* S0_NC04 - NC */
+	GPIO_NC,	/* S0_NC05 - NC */
+	GPIO_FUNC2,	/* S0_NC06 - EDP_HPD_L */
+	GPIO_INPUT,	/* S0_NC07 - DDI1_DDCDATA - STRAP */
+	GPIO_NC,	/* S0_NC08 - NC */
+	GPIO_FUNC2,	/* S0_NC09 - SOC_DISP_ON_C */
+	GPIO_FUNC2,	/* S0_NC10 - SOC_EDP_BLON_C */
+	GPIO_FUNC2,	/* S0_NC11 - SOC_DPST_PWM_C */
+	GPIO_NC,	/* S0_NC12 - NC */
+	GPIO_INPUT,	/* S0_NC13 - GPIO_NC13 - STRAP */
+	GPIO_NC,	/* S0_NC14 - NC */
+	GPIO_DEFAULT,	/* S0_NC15 - XDP_GPIO_S0_NC15 */
+	GPIO_DEFAULT,	/* S0_NC16 - XDP_GPIO_S0_NC16 */
+	GPIO_DEFAULT,	/* S0_NC17 - XDP_GPIO_S0_NC17 */
+	GPIO_DEFAULT,	/* S0_NC18 - XDP_GPIO_S0_NC18 */
+	GPIO_DEFAULT,	/* S0_NC19 - XDP_GPIO_S0_NC19 */
+	GPIO_DEFAULT,	/* S0_NC20 - XDP_GPIO_S0_NC20 */
+	GPIO_DEFAULT,	/* S0_NC21 - XDP_GPIO_S0_NC21 */
+	GPIO_DEFAULT,	/* S0_NC22 - XDP_GPIO_S0_NC22 */
+	GPIO_DEFAULT,	/* S0_NC23 - XDP_GPIO_S0_NC23 */
+	GPIO_NC,	/* S0_NC24 - NC */
+	GPIO_NC,	/* S0_NC25 - NC */
+	GPIO_NC,	/* S0_NC26 - NC */
+	GPIO_END
+};
+
+/* SCORE GPIOs */
+static const struct soc_gpio_map gpscore_gpio_map[] = {
+	GPIO_ACPI_SCI,	/* S0_SC000 - SOC_KBC_SCI - INT */
+	GPIO_FUNC2,	/* S0_SC001 - SATA_DEVSLP_C */
+	GPIO_NC,	/* S0-SC002 - SATA_LED_R_N (NC/PU) */
+	GPIO_FUNC1,	/* S0-SC003 - PCIE_CLKREQ_IMAGE# */
+	GPIO_FUNC1,	/* S0-SC004 - PCIE_CLKREQ_WLAN# */
+	GPIO_NC,	/* S0-SC005 - PCIE_CLKREQ_LAN# (NC) */
+	GPIO_NC,	/* S0-SC006 - PCIE_CLKREQ3# (NC) */
+	GPIO_FUNC(2, PULL_DISABLE, 10K), /* S0-SC007 - SD3_WP external pull */
+	GPIO_NC,	/* S0-SC008 - ACZ_RST# (NC) */
+	GPIO_NC,	/* S0-SC009 - ACZ_SYNC (NC) */
+	GPIO_NC,	/* S0-SC010 - ACZ_BCLK (NC) */
+	GPIO_NC,	/* S0-SC011 - ACZ_STDOUT (NC) */
+	GPIO_NC,	/* S0-SC012 - PCH_AZ_CODEC_SDIN0 (NC) */
+	GPIO_NC,	/* S0-SC013 - NC */
+	GPIO_INPUT,	/* S0-SC014 - DET_TRIGGER - INT */
+	GPIO_INPUT,	/* S0-SC015 - AJACK_MICPRES_L - INT */
+	GPIO_FUNC(3, PULL_DOWN, 20K),	/* S0-SC016 - MMC1_45_CLK  */
+	GPIO_FUNC(3, PULL_UP, 20K),	/* S0-SC017 - MMC1_45_D[0] */
+	GPIO_FUNC(3, PULL_UP, 20K),	/* S0-SC018 - MMC1_45_D[1] */
+	GPIO_FUNC(3, PULL_UP, 20K),	/* S0-SC019 - MMC1_45_D[2] */
+	GPIO_FUNC(3, PULL_UP, 20K),	/* S0-SC020 - MMC1_45_D[3] */
+	GPIO_FUNC(3, PULL_UP, 20K),	/* S0-SC021 - MMC1_45_D[4] */
+	GPIO_FUNC(3, PULL_UP, 20K),	/* S0-SC022 - MMC1_45_D[5] */
+	GPIO_FUNC(3, PULL_UP, 20K),	/* S0-SC023 - MMC1_45_D[6] */
+	GPIO_FUNC(3, PULL_UP, 20K),	/* S0-SC024 - MMC1_45_D[7] */
+	GPIO_FUNC(3, PULL_UP, 20K),	/* S0-SC025 - MMC1_45_CMD  */
+	GPIO_FUNC(3, PULL_UP, 20K),	/* S0-SC026 - MMC1_45_RST  */
+	GPIO_NC,	/* S0-SC027 - NC */
+	GPIO_NC,	/* S0-SC028 - NC */
+	GPIO_NC,	/* S0-SC029 - NC */
+	GPIO_NC,	/* S0-SC030 - NC */
+	GPIO_NC,	/* S0-SC031 - NC */
+	GPIO_NC,	/* S0-SC032 - NC */
+	GPIO_FUNC(1, PULL_DOWN, 20K),	/* S0-SC033 - SD3_CLK */
+	GPIO_FUNC(1, PULL_UP, 20K),	/* S0-SC034 - SD3_D0 */
+	GPIO_FUNC(1, PULL_UP, 20K),	/* S0-SC035 - SD3_D1 */
+	GPIO_FUNC(1, PULL_UP, 20K),	/* S0-SC036 - SD3_D2 */
+	GPIO_FUNC(1, PULL_UP, 20K),	/* S0-SC037 - SD3_D3 */
+	GPIO_FUNC(1, PULL_UP, 20K),	/* S0-SC038 - SD3_CD# */
+	GPIO_FUNC(1, PULL_UP, 20K),	/* S0-SC039 - SD3_CMD */
+	GPIO_NC,	/* S0-SC040 - SDMMC3_1P8_EN - TP3 */
+	GPIO_FUNC(1, PULL_UP, 20K),	/* S0-SC041 - SDIO3_PWR_EN# */
+	GPIO_FUNC1,	/* S0-SC042 - LPC_LAD0 */
+	GPIO_FUNC1,	/* S0-SC043 - LPC-LAD1 */
+	GPIO_FUNC1,	/* S0-SC044 - LPC_LAD2 */
+	GPIO_FUNC1,	/* S0-SC045 - LPC_LAD3 */
+	GPIO_FUNC1,	/* S0-SC046 - LPC_LFRAME# */
+	GPIO_FUNC1,	/* S0-SC047 - PCLK_TPM */
+	GPIO_FUNC1,	/* S0-SC048 - CLK_PCI_EC */
+	GPIO_FUNC1,	/* S0-SC049 - LPC_CLKRUN_L */
+	GPIO_NC,	/* S0-SC050 - IRQ_SERIRQ */
+	GPIO_NC,	/* S0-SC051 - SMB_SOC_DATA (XDP) */
+	GPIO_NC,	/* S0-SC052 - SMB_SOC_CLK (XDP) */
+	GPIO_NC,	/* S0-SC053 - SMB_SOC_ALERTB (NC) */
+	GPIO_DEFAULT,	/* S0-SC054 - NC */
+	GPIO_DIRQ,	/* S0-SC055 - TRACKPAD_INT_DX */
+	GPIO_INPUT,	/* S0-SC056 - GPIO_S0_SC_56 - STRAP */
+	GPIO_FUNC1,	/* S0-SC057 - PCH_UART_TXD */
+	GPIO_INPUT,	/* S0-SC058 - SIM_DET_C */
+	GPIO_INPUT_LEGACY,	/* S0-SC059 - EC_IN_RW_C */
+	GPIO_NC,	/* S0-SC060 - NC */
+	GPIO_FUNC1,	/* S0-SC061 - SOC_UART_RX */
+	GPIO_FUNC1,	/* S0-SC062 - I2S_BCLK */
+	GPIO_FUNC1,	/* S0-SC063 - I2S_LRCLK */
+	GPIO_FUNC1,	/* S0-SC064 - I2S_DIN */
+	GPIO_FUNC1,	/* S0-SC065 - I2S_DOUT */
+	GPIO_FUNC1,	/* S0-SC066 - SIO_SPI_CS# */
+	GPIO_FUNC1,	/* S0-SC067 - SIO_SPI_MISO */
+	GPIO_FUNC1,	/* S0-SC068 - SIO_SPI_MOSI */
+	GPIO_FUNC1,	/* S0-SC069 - SIO_SPI_CLK */
+	GPIO_INPUT,	/* S0-SC070 - ALS_INT_L - INT */
+	GPIO_NC,	/* S0-SC071 - NC */
+	GPIO_DIRQ,	/* S0-SC072 - TOUCH_INT_L_DX */
+	GPIO_NC,	/* S0-SC073 - NC */
+	GPIO_NC,	/* S0-SC074 - SIO_UART2_RXD (NC) */
+	GPIO_NC,	/* S0-SC075 - SIO_UART2_TXD (NC) */
+	GPIO_INPUT,	/* S0-SC076 - BIOS_STRAP - STRAP */
+	GPIO_INPUT,	/* S0-SC077 - SOC_OVERRIDE - STRAP */
+	GPIO_FUNC1,	/* S0-SC078 - I2C_0_SDA */
+	GPIO_FUNC1,	/* S0-SC079 - I2C_0_SCL */
+	GPIO_FUNC1,	/* S0-SC080 - I2C_1_SDA */
+	GPIO_FUNC1,	/* S0-SC081 - I2C_1_SCL */
+	GPIO_NC,	/* S0-SC082 - NC */
+	GPIO_NC,	/* S0-SC083 - NC */
+	GPIO_NC,	/* S0-SC084 - NC */
+	GPIO_NC,	/* S0-SC085 - NC */
+	GPIO_FUNC1,	/* S0-SC086 - I2C_4_SDA */
+	GPIO_FUNC1,	/* S0-SC087 - I2C_4_SCL */
+	GPIO_FUNC1,	/* S0-SC088 - I2C_5_SDA */
+	GPIO_FUNC1,	/* S0-SC089 - I2C_5_SCL */
+	GPIO_NC,	/* S0-SC090 - NC */
+	GPIO_NC,	/* S0-SC091 - NC */
+	GPIO_NC,	/* S0-SC092 - I2C_NGFF_SDA (NC/PU) */
+	GPIO_NC,	/* S0-SC093 - I2C_NGFF_SCL (NC/PU) */
+	GPIO_NC,	/* S0-SC094 - NC */
+	GPIO_NC,	/* S0-SC095 - SIO_PWM1 (NC) */
+	GPIO_FUNC1,	/* S0-SC096 - I2S_MCLK */
+	GPIO_NC,	/* S0-SC097 - NC */
+	GPIO_NC,	/* S0-SC098 - NC */
+	GPIO_NC,	/* S0-SC099 - NC */
+	GPIO_NC,	/* S0-SC100 - NC */
+	GPIO_DIRQ,	/* S0-SC101 - KBD_IRQ# */
+	GPIO_END
+};
+
+/* SSUS GPIOs */
+static const struct soc_gpio_map gpssus_gpio_map[] = {
+	GPIO_ACPI_SCI,	/* S500 - PCH_WAKE# */
+	GPIO_FUNC6,	/* S501 - TRACKPAD_INT# - INT */
+	GPIO_FUNC6,	/* S502 - TOUCH_INT# - INT */
+	GPIO_FUNC6,	/* S503 - LTE_WAKE_L# - INT */
+	GPIO_NC,	/* S504 - SOC_JTAG2_TDO (NC/PU) */
+	GPIO_FUNC1,	/* S505 - SUS_CLK_WLAN (NC) */
+	GPIO_INPUT_PU,	/* S506 - PCH_SPI_WP */
+	GPIO_ACPI_SMI,	/* S507 - SOC_KBC_SMI - INT */
+	GPIO_NC,	/* S508 - NC */
+	GPIO_NC,	/* S509 - MUX_AUD_INT1# (NC) */
+	GPIO_OUT_HIGH,	/* S510 - WIFI_DISABLE_L */
+	GPIO_FUNC0,	/* S511 - SUSPWRDNACK */
+	GPIO_FUNC0,	/* S512 - WIFI_SUSCLK */
+	GPIO_FUNC0,	/* S513 - SLP_SX */
+	GPIO_NC,	/* S514 - NC */
+	GPIO_FUNC0,	/* S515 - WLAN_WAKE_L - INT */
+	GPIO_FUNC0,	/* S516 - PCH_PWRBTN_L */
+	GPIO_NC,	/* S517 - NC */
+	GPIO_FUNC0,	/* S518 - SUS_STAT# */
+	GPIO_FUNC0,	/* S519 - USB_OC0# */
+	GPIO_FUNC0,	/* S520 - USB_OC1# */
+	GPIO_NC,	/* S521 - NC */
+	GPIO_NC,	/* S522 - XDP_GPIO_DFX0 */
+	GPIO_NC,	/* S523 - XDP_GPIO_DFX1 */
+	GPIO_NC,	/* S524 - XDP_GPIO_DFX2 */
+	GPIO_NC,	/* S525 - XDP_GPIO_DFX3 */
+	GPIO_NC,	/* S526 - XDP_GPIO_DFX4 */
+	GPIO_NC,	/* S527 - XDP_GPIO_DFX5 */
+	GPIO_NC,	/* S528 - XDP_GPIO_DFX6 */
+	GPIO_NC,	/* S529 - XDP_GPIO_DFX7 */
+	GPIO_NC,	/* S530 - XDP_GPIO_DFX8 */
+	GPIO_NC,	/* S531 - NC */
+	GPIO_NC,	/* S532 - NC */
+	GPIO_NC,	/* S533 - NC */
+	GPIO_NC,	/* S534 - NC */
+	GPIO_OUT_HIGH,	/* S535 - LTE_DISABLE_L */
+	GPIO_NC,	/* S536 - NC */
+	GPIO_FUNC0,	/* S537 - RAM_ID0 */
+	GPIO_FUNC0,	/* S538 - RAM_ID1 */
+	GPIO_FUNC0,	/* S539 - RAM_ID2 */
+	GPIO_NC,	/* S540 - NC */
+	GPIO_NC,	/* S541 - NC */
+	GPIO_NC,	/* S542 - NC */
+	GPIO_NC,	/* S543 - NC */
+	GPIO_END
+};
+
+static const u8 core_dedicated_irq[GPIO_MAX_DIRQS] = {
+	[TPAD_IRQ_OFFSET] = TPAD_IRQ_GPIO,
+	[TOUCH_IRQ_OFFSET] = TOUCH_IRQ_GPIO,
+	[I8042_IRQ_OFFSET] = I8042_IRQ_GPIO,
+};
+
+
+static const u8 sus_dedicated_irq[GPIO_MAX_DIRQS] = {
+	[CODEC_IRQ_OFFSET] = CODEC_IRQ_GPIO,
+};
+
+static struct soc_gpio_config gpio_config = {
+	.ncore = gpncore_gpio_map,
+	.score = gpscore_gpio_map,
+	.ssus  = gpssus_gpio_map,
+	.core_dirq = &core_dedicated_irq,
+	.sus_dirq = &sus_dedicated_irq,
+};
+
+struct soc_gpio_config* mainboard_get_gpios(void)
+{
+	return &gpio_config;
+}
diff --git a/src/mainboard/google/rambi/variants/clapper/include/variant/acpi/dptf.asl b/src/mainboard/google/rambi/variants/clapper/include/variant/acpi/dptf.asl
new file mode 100644
index 0000000000..53dd09c0f3
--- /dev/null
+++ b/src/mainboard/google/rambi/variants/clapper/include/variant/acpi/dptf.asl
@@ -0,0 +1,29 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * 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.
+ */
+
+#define DPTF_TSR0_SENSOR_ID	1
+#define DPTF_TSR0_SENSOR_NAME	"TMP432_Internal"
+#define DPTF_TSR0_PASSIVE	40
+#define DPTF_TSR0_CRITICAL	70
+
+#define DPTF_TSR1_SENSOR_ID	2
+#define DPTF_TSR1_SENSOR_NAME	"TMP432_Power_top"
+#define DPTF_TSR1_PASSIVE	45
+#define DPTF_TSR1_CRITICAL	70
+
+#define DPTF_TSR2_SENSOR_ID	3
+#define DPTF_TSR2_SENSOR_NAME	"TMP432_CPU_bottom"
+#define DPTF_TSR2_PASSIVE	35
+#define DPTF_TSR2_CRITICAL	70
+
+#undef DPTF_ENABLE_CHARGER
diff --git a/src/mainboard/google/rambi/variants/clapper/include/variant/acpi/mainboard.asl b/src/mainboard/google/rambi/variants/clapper/include/variant/acpi/mainboard.asl
new file mode 100644
index 0000000000..82510bd359
--- /dev/null
+++ b/src/mainboard/google/rambi/variants/clapper/include/variant/acpi/mainboard.asl
@@ -0,0 +1,19 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * 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.
+ */
+
+/* Elan trackpad */
+#include <mainboard/google/rambi/acpi/trackpad_elan.asl>
+
+/* Atmel touchscreen */
+#include <mainboard/google/rambi/acpi/touchscreen_atmel.asl>
diff --git a/src/mainboard/google/rambi/variants/clapper/include/variant/onboard.h b/src/mainboard/google/rambi/variants/clapper/include/variant/onboard.h
new file mode 100644
index 0000000000..016f65747f
--- /dev/null
+++ b/src/mainboard/google/rambi/variants/clapper/include/variant/onboard.h
@@ -0,0 +1,39 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2014 Google Inc.
+ *
+ * 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.
+ */
+
+#ifndef ONBOARD_H
+#define ONBOARD_H
+
+#include <mainboard/google/rambi/irqroute.h>
+
+/* PCH wake signal from EC. */
+#define BOARD_PCH_WAKE_GPIO             ACPI_ENABLE_WAKE_SUS_GPIO(0)
+
+#define BOARD_TRACKPAD_NAME             "trackpad"
+#define BOARD_TRACKPAD_IRQ              GPIO_S0_DED_IRQ(TPAD_IRQ_OFFSET)
+#define BOARD_TRACKPAD_WAKE_GPIO        1       /* GPSSUS1 */
+#define BOARD_TRACKPAD_I2C_BUS          0
+#define BOARD_TRACKPAD_I2C_ADDR         0x15
+
+#define BOARD_TOUCHSCREEN_NAME          "touchscreen"
+#define BOARD_TOUCHSCREEN_IRQ           GPIO_S0_DED_IRQ(TOUCH_IRQ_OFFSET)
+#define BOARD_TOUCHSCREEN_WAKE_GPIO     2       /* GPSSUS2 */
+#define BOARD_TOUCHSCREEN_I2C_BUS       5
+#define BOARD_TOUCHSCREEN_I2C_ADDR      0x4a
+
+#define BOARD_I8042_IRQ                 GPIO_S0_DED_IRQ(I8042_IRQ_OFFSET)
+#define BOARD_CODEC_IRQ                 GPIO_S5_DED_IRQ(CODEC_IRQ_OFFSET)
+
+#endif
diff --git a/src/mainboard/google/rambi/variants/clapper/include/variant/variant.h b/src/mainboard/google/rambi/variants/clapper/include/variant/variant.h
new file mode 100644
index 0000000000..38b156c776
--- /dev/null
+++ b/src/mainboard/google/rambi/variants/clapper/include/variant/variant.h
@@ -0,0 +1,35 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * 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.
+ */
+
+#ifndef VARIANT_H
+#define VARIANT_H
+
+/*
+ * RAM_ID[2:0] are on GPIO_SSUS[39:37]
+ * 0b000 - 4GiB total - 2 x 2GiB Micron MT41K256M16HA-125:E 1600MHz
+ * 0b001 - 4GiB total - 2 x 2GiB Hynix  H5TC4G63AFR-PBA 1600MHz
+ * 0b010 - 2GiB total - 2 x 1GiB Micron MT41K128M16JT-125:K 1600MHz
+ * 0b011 - 2GiB total - 2 x 1GiB Hynix  H5TC2G63FFR-PBA 1600MHz
+ * 0b100 - 2GiB total - 1 x 2GiB Micron MT41K256M16HA-125:E 1600MHz
+ * 0b101 - 2GiB total - 1 x 2GiB Hynix  H5TC4G63AFR-PBA 1600MHz
+ */
+
+static const uint32_t dual_channel_config =
+	(1 << 0) | (1 << 1) | (1 << 2) | (1 << 3);
+
+#define SPD_SIZE 256
+#define GPIO_SSUS_37_PAD 57
+#define GPIO_SSUS_38_PAD 50
+#define GPIO_SSUS_39_PAD 58
+
+#endif