google/cave: Add as a variant of glados

Add google/cave (Asus Chromebook Flip C302SA) as a variant of
glados Skylake reference board:
- add cave-specific DPTF, EC config, GPIO config, Kconfig,
    NHLT config, PEI data, VBT, SPD data, and devicetree

Adapted from Chromium branch firmware-glados-7820.B, commit
b0c3efe54d877246d07f2467b2dff51cc30348fa [soc/intel/skylake: Enable VMX]

Test: build/boot google/cave, verify correct functionality

Change-Id: I5c5181ce68f7a24ccd49f53ecd9d48c081fd085a
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/27420
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>

14 files changed, 896 insertions, 0 deletions

diff --git a/src/mainboard/google/glados/Kconfig b/src/mainboard/google/glados/Kconfig
index 214ad13390..412aefed9e 100644
--- a/src/mainboard/google/glados/Kconfig
+++ b/src/mainboard/google/glados/Kconfig
@@ -37,6 +37,7 @@ config MAINBOARD_DIR
 config MAINBOARD_PART_NUMBER
 	string
 	default "Caroline" if BOARD_GOOGLE_CAROLINE
+	default "Cave" if BOARD_GOOGLE_CAVE
 	default "Chell" if BOARD_GOOGLE_CHELL
 	default "Glados" if BOARD_GOOGLE_GLADOS
 	default "Lars" if BOARD_GOOGLE_LARS
@@ -49,6 +50,7 @@ config MAINBOARD_FAMILY
 config VARIANT_DIR
 	string
 	default "caroline" if BOARD_GOOGLE_CAROLINE
+	default "cave" if BOARD_GOOGLE_CAVE
 	default "chell" if BOARD_GOOGLE_CHELL
 	default "glados" if BOARD_GOOGLE_GLADOS
 	default "lars" if BOARD_GOOGLE_LARS
@@ -57,6 +59,7 @@ config VARIANT_DIR
 config DEVICETREE
 	string
 	default "variants/caroline/devicetree.cb" if BOARD_GOOGLE_CAROLINE
+	default "variants/cave/devicetree.cb" if BOARD_GOOGLE_CAVE
 	default "variants/chell/devicetree.cb" if BOARD_GOOGLE_CHELL
 	default "variants/glados/devicetree.cb" if BOARD_GOOGLE_GLADOS
 	default "variants/lars/devicetree.cb" if BOARD_GOOGLE_LARS
@@ -91,6 +94,7 @@ config GBB_HWID
 	string
 	depends on CHROMEOS
 	default "CAROLINE TEST 0958" if BOARD_GOOGLE_CAROLINE
+	default "CAVE TEST 9629" if BOARD_GOOGLE_CAVE
 	default "CHELL TEST 6297" if BOARD_GOOGLE_CHELL
 	default "GLADOS TEST 1988" if BOARD_GOOGLE_GLADOS
 	default "LARS TEST 5001" if BOARD_GOOGLE_LARS
diff --git a/src/mainboard/google/glados/Kconfig.name b/src/mainboard/google/glados/Kconfig.name
index 8538a2b006..d20230e548 100644
--- a/src/mainboard/google/glados/Kconfig.name
+++ b/src/mainboard/google/glados/Kconfig.name
@@ -9,6 +9,12 @@ config BOARD_GOOGLE_CAROLINE
 	select SAR_ENABLE
 	select USE_SAR
 
+config BOARD_GOOGLE_CAVE
+	bool "->  Cave (Asus Chromebook Flip C302SA)"
+	select BOARD_GOOGLE_BASEBOARD_GLADOS
+	select DRIVERS_GENERIC_MAX98357A
+	select NHLT_MAX98357 if INCLUDE_NHLT_BLOBS
+
 config BOARD_GOOGLE_CHELL
 	bool "->  Chell (HP Chromebook 13 G1)"
 	select BOARD_GOOGLE_BASEBOARD_GLADOS
diff --git a/src/mainboard/google/glados/spd/micron_16GiB_dimm_MT52L1G32D4PG.spd.hex b/src/mainboard/google/glados/spd/micron_16GiB_dimm_MT52L1G32D4PG.spd.hex
new file mode 100644
index 0000000000..a4dbc16641
--- /dev/null
+++ b/src/mainboard/google/glados/spd/micron_16GiB_dimm_MT52L1G32D4PG.spd.hex
@@ -0,0 +1,32 @@
+91 20 F1 03 05 1A 05 0A
+03 11 01 08 09 00 00 05
+78 78 90 50 90 11 50 E0
+90 06 3C 3C 01 90 00 00
+00 31 CA FA 00 00 00 A8
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 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 2C 00
+00 00 00 00 00 00 2C 2A
+4D 54 35 32 4C 31 47 33
+32 44 34 50 47 2D 31 30
+37 20 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+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/google/glados/spd/micron_4GiB_dimm_MT52L256M32D1PF.spd.hex b/src/mainboard/google/glados/spd/micron_4GiB_dimm_MT52L256M32D1PF.spd.hex
new file mode 100644
index 0000000000..79970c932d
--- /dev/null
+++ b/src/mainboard/google/glados/spd/micron_4GiB_dimm_MT52L256M32D1PF.spd.hex
@@ -0,0 +1,32 @@
+91 20 F1 03 05 19 05 03
+03 11 01 08 09 00 00 05
+78 78 90 50 90 11 50 E0
+90 06 3C 3C 01 90 00 00
+00 10 CA FA 00 00 00 A8
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 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 2c 00
+00 00 00 00 00 00 75 8C
+4D 54 35 32 4C 32 35 36
+4D 33 32 44 31 50 46 2D
+31 30 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+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/google/glados/spd/micron_8GiB_dimm_MT52L512M32D2PF.spd.hex b/src/mainboard/google/glados/spd/micron_8GiB_dimm_MT52L512M32D2PF.spd.hex
new file mode 100644
index 0000000000..27537096e1
--- /dev/null
+++ b/src/mainboard/google/glados/spd/micron_8GiB_dimm_MT52L512M32D2PF.spd.hex
@@ -0,0 +1,32 @@
+91 20 F1 03 05 19 05 0B
+03 11 01 08 09 00 00 05
+78 78 90 50 90 11 50 E0
+90 06 3C 3C 01 90 00 00
+00 21 CA FA 00 00 00 A8
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 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 2c 00
+00 00 00 00 00 00 3D 51
+4D 54 35 32 4C 35 31 32
+4D 33 32 44 32 50 46 2D
+31 30 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00
+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/google/glados/variants/cave/Makefile.inc b/src/mainboard/google/glados/variants/cave/Makefile.inc
new file mode 100644
index 0000000000..f3b52c2398
--- /dev/null
+++ b/src/mainboard/google/glados/variants/cave/Makefile.inc
@@ -0,0 +1,43 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2016 Google Inc.
+## Copyright (C) 2016 Intel Corporation
+##
+## 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.
+##
+
+romstage-y += variant.c
+ramstage-y += variant.c
+smm-y += variant.c
+
+SPD_BIN = $(obj)/spd.bin
+
+# SPD data by index.  No method for board identification yet
+SPD_SOURCES = micron_4GiB_dimm_MT52L256M32D1PF  # 0b0000
+SPD_SOURCES += samsung_dimm_K4E8E324EB-EGCF     # 0b0001
+SPD_SOURCES += micron_8GiB_dimm_MT52L512M32D2PF # 0b0010
+SPD_SOURCES += samsung_dimm_K4E6E304EB-EGCF     # 0b0011
+SPD_SOURCES += micron_16GiB_dimm_MT52L1G32D4PG  # 0b0100
+SPD_SOURCES += hynix_dimm_H9CCNNNCLTMLAR        # 0b0101
+
+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/glados/variants/cave/board_info.txt b/src/mainboard/google/glados/variants/cave/board_info.txt
new file mode 100644
index 0000000000..1f62ea3f4b
--- /dev/null
+++ b/src/mainboard/google/glados/variants/cave/board_info.txt
@@ -0,0 +1,6 @@
+Vendor name: Google
+Board name: Cave (Asus Chromebook Flip C302SA)
+Category: laptop
+ROM protocol: SPI
+ROM socketed: n
+Flashrom support: y
diff --git a/src/mainboard/google/glados/variants/cave/data.vbt b/src/mainboard/google/glados/variants/cave/data.vbt
new file mode 100644
index 0000000000..02e1cd10f6
--- /dev/null
+++ b/src/mainboard/google/glados/variants/cave/data.vbt
diff --git a/src/mainboard/google/glados/variants/cave/devicetree.cb b/src/mainboard/google/glados/variants/cave/devicetree.cb
new file mode 100644
index 0000000000..02667a457c
--- /dev/null
+++ b/src/mainboard/google/glados/variants/cave/devicetree.cb
@@ -0,0 +1,303 @@
+chip soc/intel/skylake
+
+	# Enable deep Sx states
+	register "deep_s3_enable_ac" = "0"
+	register "deep_s3_enable_dc" = "0"
+	register "deep_s5_enable_ac" = "1"
+	register "deep_s5_enable_dc" = "1"
+	register "deep_sx_config" = "DSX_EN_LAN_WAKE_PIN"
+
+	# GPE configuration
+	# Note that GPE events called out in ASL code rely on this
+	# route. i.e. If this route changes then the affected GPE
+	# offset bits also need to be changed.
+	register "gpe0_dw0" = "GPP_B"
+	register "gpe0_dw1" = "GPP_D"
+	register "gpe0_dw2" = "GPP_E"
+
+	# EC host command ranges are in 0x800-0x8ff & 0x200-0x20f
+	register "gen1_dec" = "0x00fc0801"
+	register "gen2_dec" = "0x000c0201"
+
+	# Enable "Intel Speed Shift Technology"
+	register "speed_shift_enable" = "1"
+
+	# Enable DPTF
+	register "dptf_enable" = "1"
+
+	# FSP Configuration
+	register "ProbelessTrace" = "0"
+	register "EnableLan" = "0"
+	register "EnableSata" = "0"
+	register "SataSalpSupport" = "0"
+	register "SataMode" = "0"
+	register "SataPortsEnable[0]" = "0"
+	register "EnableAzalia" = "1"
+	register "DspEnable" = "1"
+	register "IoBufferOwnership" = "3"
+	register "EnableTraceHub" = "0"
+	register "SsicPortEnable" = "0"
+	register "SmbusEnable" = "1"
+	register "Cio2Enable" = "0"
+	register "ScsEmmcEnabled" = "1"
+	register "ScsEmmcHs400Enabled" = "1"
+	register "ScsSdCardEnabled" = "2"
+	register "PttSwitch" = "0"
+	register "InternalGfx" = "1"
+	register "SkipExtGfxScan" = "1"
+	register "Device4Enable" = "1"
+	register "HeciEnabled" = "0"
+	register "SaGv" = "3"
+	register "SerialIrqConfigSirqEnable" = "1"
+	register "PmConfigSlpS3MinAssert" = "2"        # 50ms
+	register "PmConfigSlpS4MinAssert" = "1"        # 1s
+	register "PmConfigSlpSusMinAssert" = "1"       # 500ms
+	register "PmConfigSlpAMinAssert" = "3"         # 2s
+	register "PmTimerDisabled" = "1"
+
+	register "pirqa_routing" = "PCH_IRQ11"
+	register "pirqb_routing" = "PCH_IRQ10"
+	register "pirqc_routing" = "PCH_IRQ11"
+	register "pirqd_routing" = "PCH_IRQ11"
+	register "pirqe_routing" = "PCH_IRQ11"
+	register "pirqf_routing" = "PCH_IRQ11"
+	register "pirqg_routing" = "PCH_IRQ11"
+	register "pirqh_routing" = "PCH_IRQ11"
+
+	# VR Settings Configuration for 5 Domains
+	#+----------------+-------+-------+-------------+-------------+-------+
+	#| Domain/Setting |  SA   |  IA   | Ring Sliced | GT Unsliced |  GT   |
+	#+----------------+-------+-------+-------------+-------------+-------+
+	#| Psi1Threshold  | 20A   | 20A   | 20A         | 20A         | 20A   |
+	#| Psi2Threshold  | 4A    | 5A    | 5A          | 5A          | 5A    |
+	#| Psi3Threshold  | 1A    | 1A    | 1A          | 1A          | 1A    |
+	#| Psi3Enable     | 1     | 1     | 1           | 1           | 1     |
+	#| Psi4Enable     | 1     | 1     | 1           | 1           | 1     |
+	#| ImonSlope      | 0     | 0     | 0           | 0           | 0     |
+	#| ImonOffset     | 0     | 0     | 0           | 0           | 0     |
+	#| IccMax         | 4A    | 24A   | 24A         | 24A         | 24A   |
+	#| VrVoltageLimit | 1.52V | 1.52V | 1.52V       | 1.52V       | 1.52V |
+	#+----------------+-------+-------+-------------+-------------+-------+
+	register "domain_vr_config[VR_SYSTEM_AGENT]" = "{
+		.vr_config_enable = 1,
+		.psi1threshold = VR_CFG_AMP(20),
+		.psi2threshold = VR_CFG_AMP(4),
+		.psi3threshold = VR_CFG_AMP(1),
+		.psi3enable = 1,
+		.psi4enable = 1,
+		.imon_slope = 0x0,
+		.imon_offset = 0x0,
+		.icc_max = VR_CFG_AMP(4),
+		.voltage_limit = 1520,
+	}"
+
+	register "domain_vr_config[VR_IA_CORE]" = "{
+		.vr_config_enable = 1,
+		.psi1threshold = VR_CFG_AMP(20),
+		.psi2threshold = VR_CFG_AMP(5),
+		.psi3threshold = VR_CFG_AMP(1),
+		.psi3enable = 1,
+		.psi4enable = 1,
+		.imon_slope = 0x0,
+		.imon_offset = 0x0,
+		.icc_max = VR_CFG_AMP(24),
+		.voltage_limit = 1520,
+	}"
+
+	register "domain_vr_config[VR_RING]" = "{
+		.vr_config_enable = 1,
+		.psi1threshold = VR_CFG_AMP(20),
+		.psi2threshold = VR_CFG_AMP(5),
+		.psi3threshold = VR_CFG_AMP(1),
+		.psi3enable = 1,
+		.psi4enable = 1,
+		.imon_slope = 0x0,
+		.imon_offset = 0x0,
+		.icc_max = VR_CFG_AMP(24),
+		.voltage_limit = 1520,
+	}"
+
+	register "domain_vr_config[VR_GT_UNSLICED]" = "{
+		.vr_config_enable = 1,
+		.psi1threshold = VR_CFG_AMP(20),
+		.psi2threshold = VR_CFG_AMP(5),
+		.psi3threshold = VR_CFG_AMP(1),
+		.psi3enable = 1,
+		.psi4enable = 1,
+		.imon_slope = 0x0,
+		.imon_offset = 0x0,
+		.icc_max = VR_CFG_AMP(24),
+		.voltage_limit = 1520,
+	}"
+
+	register "domain_vr_config[VR_GT_SLICED]" = "{
+		.vr_config_enable = 1,
+		.psi1threshold = VR_CFG_AMP(20),
+		.psi2threshold = VR_CFG_AMP(5),
+		.psi3threshold = VR_CFG_AMP(1),
+		.psi3enable = 1,
+		.psi4enable = 1,
+		.imon_slope = 0x0,
+		.imon_offset = 0x0,
+		.icc_max = VR_CFG_AMP(24),
+		.voltage_limit = 1520,
+	}"
+
+	# Enable Root port 1
+	register "PcieRpEnable[0]" = "1"
+	# Enable CLKREQ#
+	register "PcieRpClkReqSupport[0]" = "1"
+	# RP 1 uses SRCCLKREQ1#
+	register "PcieRpClkReqNumber[0]" = "1"
+
+	register "usb2_ports[0]" = "USB2_PORT_TYPE_C(OC_SKIP)"  # Type-C Port (board)
+	register "usb2_ports[1]" = "USB2_PORT_MAX(OC_SKIP)"     # Type-C Port (flex)
+	register "usb2_ports[2]" = "USB2_PORT_MID(OC_SKIP)"     # Bluetooth
+	register "usb2_ports[4]" = "USB2_PORT_EMPTY"   # Type-A Port 1
+	register "usb2_ports[6]" = "USB2_PORT_FLEX(OC_SKIP)"    # Camera
+	register "usb2_ports[8]" = "USB2_PORT_EMPTY"   # Type-A Port 2
+
+	register "usb3_ports[0]" = "USB3_PORT_DEFAULT(OC_SKIP)" # Type-C Port (board)
+	register "usb3_ports[1]" = "USB3_PORT_DEFAULT(OC_SKIP)" # Type-C Port (flex)
+	register "usb3_ports[2]" = "USB3_PORT_EMPTY"   # Type-A Port 1
+	register "usb3_ports[3]" = "USB3_PORT_EMPTY"   # Type-A Port 2
+
+	# Must leave UART0 enabled or SD/eMMC will not work as PCI
+	register "SerialIoDevMode" = "{
+		[PchSerialIoIndexI2C0]  = PchSerialIoPci,
+		[PchSerialIoIndexI2C1]  = PchSerialIoPci,
+		[PchSerialIoIndexI2C2]  = PchSerialIoDisabled,
+		[PchSerialIoIndexI2C3]  = PchSerialIoDisabled,
+		[PchSerialIoIndexI2C4]  = PchSerialIoPci,
+		[PchSerialIoIndexI2C5]  = PchSerialIoDisabled,
+		[PchSerialIoIndexSpi0]  = PchSerialIoDisabled,
+		[PchSerialIoIndexSpi1]  = PchSerialIoDisabled,
+		[PchSerialIoIndexUart0] = PchSerialIoPci,
+		[PchSerialIoIndexUart1] = PchSerialIoDisabled,
+		[PchSerialIoIndexUart2] = PchSerialIoPci,
+	}"
+
+	# I2C4 is 1.8V
+	register "i2c_voltage[4]" = "I2C_VOLTAGE_1V8"
+
+	# PL2 override 15W
+	register "tdp_pl2_override" = "15"
+
+	register "tcc_offset" = "10" # TCC of 90C
+
+	# Send an extra VR mailbox command for the supported MPS IMVP8 model
+	register "SendVrMbxCmd" = "1"
+
+	# Use default SD card detect GPIO configuration
+	register "sdcard_cd_gpio_default" = "GPP_A7"
+
+	# Lock Down
+	register "common_soc_config" = "{
+		.chipset_lockdown = CHIPSET_LOCKDOWN_COREBOOT,
+	}"
+
+	device cpu_cluster 0 on
+		device lapic 0 on end
+	end
+	device domain 0 on
+		device pci 00.0 on  end # Host Bridge
+		device pci 02.0 on  end # Integrated Graphics Device
+		device pci 14.0 on  end # USB xHCI
+		device pci 14.1 off end # USB xDCI (OTG)
+		device pci 14.2 on  end # Thermal Subsystem
+		device pci 15.0 on
+			chip drivers/i2c/generic
+				register "hid" = ""ELAN0001""
+				register "desc" = ""ELAN Touchscreen""
+				register "irq" = "ACPI_IRQ_EDGE_LOW(GPP_E7_IRQ)"
+				device i2c 10 on end
+			end
+		end # I2C #0
+		device pci 15.1 on
+			chip drivers/i2c/generic
+				register "hid" = ""ELAN0000""
+				register "desc" = ""ELAN Touchpad""
+				register "irq" = "ACPI_IRQ_EDGE_LOW(GPP_B3_IRQ)"
+				register "wake" = "GPE0_DW0_05"
+				device i2c 15 on end
+			end
+		end # I2C #1
+		device pci 15.2 off end # I2C #2
+		device pci 15.3 off end # I2C #3
+		device pci 16.0 on  end # Management Engine Interface 1
+		device pci 16.1 off end # Management Engine Interface 2
+		device pci 16.2 off end # Management Engine IDE-R
+		device pci 16.3 off end # Management Engine KT Redirection
+		device pci 16.4 off end # Management Engine Interface 3
+		device pci 17.0 off end # SATA
+		device pci 19.0 on  end # UART #2
+		device pci 19.1 off end # I2C #5
+		device pci 19.2 on
+			chip drivers/i2c/nau8825
+				register "irq" = "ACPI_IRQ_LEVEL_LOW(GPP_F10_IRQ)"
+				register "jkdet_enable" = "1"
+				register "jkdet_pull_enable" = "0"   # R389
+				register "jkdet_polarity" = "1"      # ActiveLow
+				register "vref_impedance" = "2"      # 125kOhm
+				register "micbias_voltage" = "6"     # 2.754
+				register "sar_threshold_num" = "4"
+				register "sar_threshold[0]" = "0x0c"
+				register "sar_threshold[1]" = "0x1e"
+				register "sar_threshold[2]" = "0x38"
+				register "sar_threshold[3]" = "0x60"
+				register "sar_hysteresis" = "1"
+				register "sar_voltage" = "0"          # VDDA
+				register "sar_compare_time" = "0"     # 500ns
+				register "sar_sampling_time" = "0"    # 2us
+				register "short_key_debounce" = "2"   # 100ms
+				register "jack_insert_debounce" = "7" # 512ms
+				register "jack_eject_debounce" = "7"  # 512ms
+				device i2c 1a on end
+			end
+		end # I2C #4
+		device pci 1c.0 on
+			chip drivers/intel/wifi
+				register "wake" = "GPE0_DW0_16"
+				device pci 00.0 on end
+			end
+		end # PCI Express Port 1
+		device pci 1c.1 off end # PCI Express Port 2
+		device pci 1c.2 off end # PCI Express Port 3
+		device pci 1c.3 off end # PCI Express Port 4
+		device pci 1c.4 off end # PCI Express Port 5
+		device pci 1c.5 off end # PCI Express Port 6
+		device pci 1c.6 off end # PCI Express Port 7
+		device pci 1c.7 off end # PCI Express Port 8
+		device pci 1d.0 off end # PCI Express Port 9
+		device pci 1d.1 off end # PCI Express Port 10
+		device pci 1d.2 off end # PCI Express Port 11
+		device pci 1d.3 off end # PCI Express Port 12
+		device pci 1e.0 on  end # UART #0
+		device pci 1e.1 off end # UART #1
+		device pci 1e.2 off end # GSPI #0
+		device pci 1e.3 off end # GSPI #1
+		device pci 1e.4 on  end # eMMC
+		device pci 1e.5 off end # SDIO
+		device pci 1e.6 on  end # SDCard
+		device pci 1f.0 on
+			chip drivers/pc80/tpm
+				device pnp 0c31.0 on end
+			end
+			chip ec/google/chromeec
+				device pnp 0c09.0 on end
+			end
+		end # LPC Interface
+		device pci 1f.1 on  end # P2SB
+		device pci 1f.2 on  end # Power Management Controller
+		device pci 1f.3 on
+			chip drivers/generic/max98357a
+				register "sdmode_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_E3)"
+				register "sdmode_delay" = "5"
+				device generic 0 on end
+			end
+		end # Intel HDA
+		device pci 1f.4 on  end # SMBus
+		device pci 1f.5 on  end # PCH SPI
+		device pci 1f.6 off end # GbE
+	end
+end
diff --git a/src/mainboard/google/glados/variants/cave/include/variant/acpi/dptf.asl b/src/mainboard/google/glados/variants/cave/include/variant/acpi/dptf.asl
new file mode 100644
index 0000000000..33b25a41ec
--- /dev/null
+++ b/src/mainboard/google/glados/variants/cave/include/variant/acpi/dptf.asl
@@ -0,0 +1,102 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2016 Google Inc.
+ * Copyright (C) 2016 Intel Corporation
+ *
+ * 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_CPU_PASSIVE        80
+#define DPTF_CPU_CRITICAL       99
+
+#define DPTF_TSR0_SENSOR_ID	1
+#define DPTF_TSR0_SENSOR_NAME	"WiFi"
+#define DPTF_TSR0_PASSIVE	50
+#define DPTF_TSR0_CRITICAL	80
+#define DPTF_TSR0_TABLET_PASSIVE	52
+#define DPTF_TSR0_TABLET_CRITICAL	80
+
+#define DPTF_TSR1_SENSOR_ID	2
+#define DPTF_TSR1_SENSOR_NAME	"PD"
+#define DPTF_TSR1_PASSIVE	50
+#define DPTF_TSR1_CRITICAL	80
+#define DPTF_TSR1_TABLET_PASSIVE	52
+#define DPTF_TSR1_TABLET_CRITICAL	80
+
+#define DPTF_TSR2_SENSOR_ID	3
+#define DPTF_TSR2_SENSOR_NAME	"DRAM"
+#define DPTF_TSR2_PASSIVE	50
+#define DPTF_TSR2_CRITICAL	80
+#define DPTF_TSR2_TABLET_PASSIVE	52
+#define DPTF_TSR2_TABLET_CRITICAL	80
+
+#define DPTF_TSR3_SENSOR_ID	4
+#define DPTF_TSR3_SENSOR_NAME	"Charger"
+#define DPTF_TSR3_PASSIVE	68
+#define DPTF_TSR3_CRITICAL	85
+#define DPTF_TSR3_TABLET_PASSIVE	68
+#define DPTF_TSR3_TABLET_CRITICAL	85
+
+/* Enable DPTF charger control */
+#define DPTF_ENABLE_CHARGER
+
+/* SKL-Y is Fanless design. */
+#undef DPTF_ENABLE_FAN_CONTROL
+
+/* Charger performance states, board-specific values from charger and EC */
+Name (CHPS, Package () {
+	Package () { 0, 0, 0, 0, 255, 0x1338, "mA", 0 },  /* 4920mA (MAX) */
+	Package () { 0, 0, 0, 0, 39, 0x9C0, "mA", 0 },	  /* 2496mA */
+	Package () { 0, 0, 0, 0, 28, 0x700, "mA", 0 },	  /* 1792mA */
+	Package () { 0, 0, 0, 0, 19, 0x4C0, "mA", 0 },	  /* 1216mA */
+	Package () { 0, 0, 0, 0, 13, 0x340, "mA", 0 },	  /* 832mA */
+	Package () { 0, 0, 0, 0, 10, 0x280, "mA", 0 },	  /* 640mA */
+	Package () { 0, 0, 0, 0, 6, 0x180, "mA", 0 },	  /* 384mA */
+	Package () { 0, 0, 0, 0, 2, 0x80, "mA", 0 },	  /* 124mA */
+})
+
+Name (DTRT, Package () {
+	/* CPU Throttle Effect on CPU */
+	Package () { \_SB.PCI0.B0D4, \_SB.PCI0.B0D4, 100, 10, 0, 0, 0, 0 },
+
+	/* CPU Effect on Temp Sensor 0 */
+	Package () { \_SB.PCI0.B0D4, \_SB.DPTF.TSR0, 100, 100, 0, 0, 0, 0 },
+
+	/* CPU Effect on Temp Sensor 1 */
+	Package () { \_SB.DPTF.TCHG, \_SB.DPTF.TSR1, 100, 50, 0, 0, 0, 0 },
+
+	/* CPU Effect on Temp Sensor 2 */
+	Package () { \_SB.PCI0.B0D4, \_SB.DPTF.TSR2, 100, 100, 0, 0, 0, 0 },
+
+	/* Charger Effect on Temp Sensor 3 */
+	Package () { \_SB.DPTF.TCHG, \_SB.DPTF.TSR3, 100, 50, 0, 0, 0, 0 },
+})
+
+Name (MPPC, Package ()
+{
+	0x2,		/* Revision */
+	Package () {	/* Power Limit 1 */
+		0,	/* PowerLimitIndex, 0 for Power Limit 1 */
+		1600,	/* PowerLimitMinimum */
+		10000,	/* PowerLimitMaximum */
+		1000,	/* TimeWindowMinimum */
+		1000,	/* TimeWindowMaximum */
+		200	/* StepSize */
+	},
+	Package () {	/* Power Limit 2 */
+		1,	/* PowerLimitIndex, 1 for Power Limit 2 */
+		8000,	/* PowerLimitMinimum */
+		8000,	/* PowerLimitMaximum */
+		1000,	/* TimeWindowMinimum */
+		1000,	/* TimeWindowMaximum */
+		1000	/* StepSize */
+	}
+})
diff --git a/src/mainboard/google/glados/variants/cave/include/variant/acpi/mainboard.asl b/src/mainboard/google/glados/variants/cave/include/variant/acpi/mainboard.asl
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/src/mainboard/google/glados/variants/cave/include/variant/acpi/mainboard.asl
diff --git a/src/mainboard/google/glados/variants/cave/include/variant/ec.h b/src/mainboard/google/glados/variants/cave/include/variant/ec.h
new file mode 100644
index 0000000000..62bfec1d9f
--- /dev/null
+++ b/src/mainboard/google/glados/variants/cave/include/variant/ec.h
@@ -0,0 +1,23 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2015 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.
+ */
+
+/* Enable EC backed ALS device in ACPI */
+#define EC_ENABLE_ALS_DEVICE
+
+/* Enable EC backed Keyboard Backlight in ACPI */
+#define EC_ENABLE_KEYBOARD_BACKLIGHT
+
+/* EC ENABLE TABLET EVENT */
+#define EC_ENABLE_TABLET_EVENT
diff --git a/src/mainboard/google/glados/variants/cave/include/variant/gpio.h b/src/mainboard/google/glados/variants/cave/include/variant/gpio.h
new file mode 100644
index 0000000000..6674b0edba
--- /dev/null
+++ b/src/mainboard/google/glados/variants/cave/include/variant/gpio.h
@@ -0,0 +1,246 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2016 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 MAINBOARD_GPIO_H
+#define MAINBOARD_GPIO_H
+
+#include <soc/gpe.h>
+#include <soc/gpio.h>
+
+/* MAX98357A SD_MODE */
+#define GPIO_SPEAKER_MAXIM_AMP_SDMODE	GPP_E3
+
+/* EC in RW */
+#define GPIO_EC_IN_RW		GPP_C6
+
+/* BIOS Flash Write Protect */
+#define GPIO_PCH_WP		GPP_C23
+
+/* Memory configuration board straps */
+#define GPIO_MEM_CONFIG_0	GPP_C12
+#define GPIO_MEM_CONFIG_1	GPP_C13
+#define GPIO_MEM_CONFIG_2	GPP_C14
+#define GPIO_MEM_CONFIG_3	GPP_C15
+
+/* EC wake is LAN_WAKE# which is a special DeepSX wake pin */
+#define GPE_EC_WAKE		GPE0_LAN_WAK
+
+/* GPP_B16 is WLAN_WAKE. GPP_B group is routed to DW0 in the GPE0 block */
+#define GPE_WLAN_WAKE		GPE0_DW0_16
+
+/* GPP_B5 is TOUCHPAD WAKE. GPP_B group is routed to DW0 in the GPE0 block */
+#define GPE_TOUCHPAD_WAKE	GPE0_DW0_05
+
+/* Input device interrupt configuration */
+#define TOUCHPAD_INT_L		GPP_B3_IRQ
+#define TOUCHSCREEN_INT_L	GPP_E7_IRQ
+#define MIC_INT_L		GPP_F10_IRQ
+
+/* GPP_E16 is EC_SCI_L. GPP_E group is routed to DW2 in the GPE0 block */
+#define EC_SCI_GPI		GPE0_DW2_16
+#define EC_SMI_GPI		GPP_E15
+
+/* Power rail control signals. */
+#define EN_PP3300_KEPLER	GPP_C11
+#define EN_PP3300_DX_TOUCH	GPP_C22
+#define EN_PP3300_DX_EMMC	GPP_D5
+#define EN_PP1800_DX_EMMC	GPP_D6
+#define EN_PP3300_DX_CAM	GPP_D12
+
+/* SD controller needs additional card detect GPIO to support RTD3 */
+#define GPIO_SD_CARD_DETECT	GPP_A7
+
+#ifndef __ACPI__
+/* Pad configuration in ramstage. */
+static const struct pad_config gpio_table[] = {
+/* RCIN# */		PAD_CFG_NF(GPP_A0, NONE, DEEP, NF1),
+/* LAD0 */		PAD_CFG_NF(GPP_A1, 20K_PU, DEEP, NF1),
+/* LAD1 */		PAD_CFG_NF(GPP_A2, 20K_PU, DEEP, NF1),
+/* LAD2 */		PAD_CFG_NF(GPP_A3, 20K_PU, DEEP, NF1),
+/* LAD3 */		PAD_CFG_NF(GPP_A4, 20K_PU, DEEP, NF1),
+/* LFRAME# */		PAD_CFG_NF(GPP_A5, NONE, DEEP, NF1),
+/* SERIRQ */		PAD_CFG_NF(GPP_A6, NONE, DEEP, NF1),
+/* SD_CD_INT_L */	PAD_CFG_GPI_GPIO_DRIVER(GPP_A7, 20K_PU, DEEP),
+/* CLKRUN# */		PAD_CFG_NF(GPP_A8, NONE, DEEP, NF1),
+/* CLKOUT_LPC0 */	PAD_CFG_NF(GPP_A9, NONE, DEEP, NF1),
+/* CLKOUT_LPC1 */	PAD_CFG_NC(GPP_A10),
+/* PME# */		PAD_CFG_NC(GPP_A11),
+/* BM_BUSY# */		PAD_CFG_NC(GPP_A12),
+/* SUSWARN# */		PAD_CFG_NF(GPP_A13, NONE, DEEP, NF1),
+/* SUS_STAT# */		PAD_CFG_NF(GPP_A14, NONE, DEEP, NF1),
+/* SUSACK# */		PAD_CFG_NF(GPP_A15, NONE, DEEP, NF1),
+/* SD_1P8_SEL */	PAD_CFG_NF(GPP_A16, NONE, DEEP, NF1),
+/* SD_PWR_EN# */	PAD_CFG_NF(GPP_A17, NONE, DEEP, NF1),
+/* ISH_GP0 */		PAD_CFG_NC(GPP_A18),
+/* ISH_GP1 */		PAD_CFG_NC(GPP_A19),
+/* ISH_GP2 */		PAD_CFG_NC(GPP_A20),
+/* ISH_GP3 */		PAD_CFG_NC(GPP_A21),
+/* ISH_GP4 */		PAD_CFG_NC(GPP_A22),
+/* ISH_GP5 */		PAD_CFG_NC(GPP_A23),
+/* CORE_VID0 */		PAD_CFG_NC(GPP_B0),
+/* CORE_VID1 */		PAD_CFG_NC(GPP_B1),
+/* VRALERT# */		PAD_CFG_NC(GPP_B2),
+/* CPU_GP2 */		PAD_CFG_GPI_APIC(GPP_B3, NONE, PLTRST), /* TRACKPAD */
+/* CPU_GP3 */		PAD_CFG_NC(GPP_B4),
+/* SRCCLKREQ0# */	PAD_CFG_GPI_ACPI_SCI(GPP_B5, NONE, DEEP, YES), /* TRACKPAD WAKE */
+/* SRCCLKREQ1# */	PAD_CFG_NF(GPP_B6, NONE, DEEP, NF1), /* WLAN */
+/* SRCCLKREQ2# */	PAD_CFG_NC(GPP_B7),
+/* SRCCLKREQ3# */	PAD_CFG_NC(GPP_B8),
+/* SRCCLKREQ4# */	PAD_CFG_NC(GPP_B9),
+/* SRCCLKREQ5# */	PAD_CFG_NC(GPP_B10),
+/* EXT_PWR_GATE# */	PAD_CFG_NF(GPP_B11, NONE, DEEP, NF1),
+/* SLP_S0# */		PAD_CFG_NF(GPP_B12, NONE, DEEP, NF1),
+/* PLTRST# */		PAD_CFG_NF(GPP_B13, NONE, DEEP, NF1),
+/* SPKR */		PAD_CFG_NC(GPP_B14),
+/* GSPI0_CS# */		PAD_CFG_NC(GPP_B15),
+/* GSPI0_CLK */		PAD_CFG_GPI_ACPI_SCI(GPP_B16, NONE, DEEP, YES), /* WLAN WAKE */
+/* GSPI0_MISO */	PAD_CFG_NC(GPP_B17),
+/* GSPI0_MOSI */	PAD_CFG_NC(GPP_B18),
+/* GSPI1_CS# */		PAD_CFG_NC(GPP_B19),
+/* GSPI1_CLK */		PAD_CFG_NC(GPP_B20),
+/* GSPI1_MISO */	PAD_CFG_NC(GPP_B21),
+/* GSPI1_MOSI */	PAD_CFG_NC(GPP_B22),
+/* SM1ALERT# */		PAD_CFG_GPO(GPP_B23, 0, DEEP),
+/* SMBCLK */		PAD_CFG_NF(GPP_C0, NONE, DEEP, NF1), /* XDP */
+/* SMBDATA */		PAD_CFG_NF(GPP_C1, NONE, DEEP, NF1), /* XDP */
+/* SMBALERT# */		PAD_CFG_NC(GPP_C2),
+/* SML0CLK */		PAD_CFG_GPI_GPIO_DRIVER(GPP_C3, NONE, DEEP),
+/* SML0DATA */		PAD_CFG_GPI_GPIO_DRIVER(GPP_C4, NONE, DEEP),
+/* SML0ALERT# */	PAD_CFG_GPO(GPP_C5, 0, DEEP),
+/* SM1CLK */		PAD_CFG_GPI_GPIO_DRIVER(GPP_C6, 20K_PU, DEEP), /* EC_IN_RW */
+/* SM1DATA */		PAD_CFG_GPI_GPIO_DRIVER(GPP_C7, NONE, DEEP),
+/* UART0_RXD */		PAD_CFG_NC(GPP_C8),
+/* UART0_TXD */		PAD_CFG_NC(GPP_C9),
+/* UART0_RTS# */	PAD_CFG_NC(GPP_C10),
+/* UART0_CTS# */	PAD_CFG_NC(GPP_C11),
+/* UART1_RXD */		PAD_CFG_GPI_GPIO_DRIVER(GPP_C12, NONE, DEEP), /* MEM_CONFIG[0] */
+/* UART1_TXD */		PAD_CFG_GPI_GPIO_DRIVER(GPP_C13, NONE, DEEP), /* MEM_CONFIG[1] */
+/* UART1_RTS# */	PAD_CFG_GPI_GPIO_DRIVER(GPP_C14, NONE, DEEP), /* MEM_CONFIG[2] */
+/* UART1_CTS# */	PAD_CFG_GPI_GPIO_DRIVER(GPP_C15, NONE, DEEP), /* MEM_CONFIG[3] */
+/* I2C0_SDA */		PAD_CFG_NF(GPP_C16, NONE, DEEP, NF1), /* TOUCHSCREEN */
+/* I2C0_SCL */		PAD_CFG_NF(GPP_C17, NONE, DEEP, NF1), /* TOUCHSCREEN */
+/* I2C1_SDA */		PAD_CFG_NF(GPP_C18, NONE, DEEP, NF1), /* TRACKPAD */
+/* I2C1_SCL */		PAD_CFG_NF(GPP_C19, NONE, DEEP, NF1), /* TRACKPAD */
+/* UART2_RXD */		PAD_CFG_NF(GPP_C20, NONE, DEEP, NF1), /* SERVO */
+/* UART2_TXD */		PAD_CFG_NF(GPP_C21, NONE, DEEP, NF1), /* SERVO */
+/* UART2_RTS# */	PAD_CFG_GPO(GPP_C22, 1, DEEP), /* EN_PP3300_DX_TOUCH */
+/* UART2_CTS# */	PAD_CFG_GPI_GPIO_DRIVER(GPP_C23, 20K_PU, DEEP), /* PCH_WP */
+/* SPI1_CS# */		PAD_CFG_NC(GPP_D0),
+/* SPI1_CLK */		PAD_CFG_NC(GPP_D1),
+/* SPI1_MISO */		PAD_CFG_NC(GPP_D2),
+/* SPI1_MOSI */		PAD_CFG_NC(GPP_D3),
+/* FASHTRIG */		PAD_CFG_NC(GPP_D4),
+/* ISH_I2C0_SDA */	PAD_CFG_GPO(GPP_D5, 1, DEEP), /* EN_PP3300_DX_EMMC */
+/* ISH_I2C0_SCL */	PAD_CFG_GPO(GPP_D6, 1, DEEP), /* EN_PP1800_DX_EMMC */
+/* ISH_I2C1_SDA */	PAD_CFG_NC(GPP_D7),
+/* ISH_I2C1_SCL */	PAD_CFG_NC(GPP_D8),
+			PAD_CFG_NC(GPP_D9),
+			PAD_CFG_NC(GPP_D10),
+			PAD_CFG_NC(GPP_D11),
+			PAD_CFG_GPO(GPP_D12, 1, DEEP), /* EN_PP3300_DX_CAM */
+/* ISH_UART0_RXD */	PAD_CFG_NC(GPP_D13),
+/* ISH_UART0_TXD */	PAD_CFG_NC(GPP_D14),
+/* ISH_UART0_RTS# */	PAD_CFG_NC(GPP_D15),
+/* ISH_UART0_CTS# */	PAD_CFG_NC(GPP_D16),
+/* DMIC_CLK1 */		PAD_CFG_NC(GPP_D17),
+/* DMIC_DATA1 */	PAD_CFG_NC(GPP_D18),
+/* DMIC_CLK0 */		PAD_CFG_NF(GPP_D19, NONE, DEEP, NF1),
+/* DMIC_DATA0 */	PAD_CFG_NF(GPP_D20, NONE, DEEP, NF1),
+/* TS_SPI_IO2 */	PAD_CFG_NC(GPP_D21),
+/* TS_SPI_IO3 */	PAD_CFG_NC(GPP_D22),
+/* I2S_MCLK */		PAD_CFG_NF(GPP_D23, NONE, DEEP, NF1),
+/* SATAXPCI0 */		PAD_CFG_GPI_APIC(GPP_E0, NONE, PLTRST), /* TPM_PIRQ_L */
+/* SATAXPCIE1 */	PAD_CFG_NC(GPP_E1),
+/* SATAXPCIE2 */	PAD_CFG_NC(GPP_E2),
+/* CPU_GP0 */		PAD_CFG_GPI_GPIO_DRIVER(GPP_E3, NONE, DEEP), /* AUDIO_DB_ID */
+/* SATA_DEVSLP0 */	PAD_CFG_GPO(GPP_E4, 1, DEEP), /* TOUCH_RESET */
+/* SATA_DEVSLP1 */	PAD_CFG_NC(GPP_E5),
+/* SATA_DEVSLP2 */	PAD_CFG_NC(GPP_E6),
+/* CPU_GP1 */		PAD_CFG_GPI_APIC(GPP_E7, NONE, PLTRST), /* TOUCHSCREEN */
+/* SATALED# */		PAD_CFG_NC(GPP_E8),
+/* USB2_OCO# */		PAD_CFG_NC(GPP_E9),
+/* USB2_OC1# */		PAD_CFG_NC(GPP_E10),
+/* USB2_OC2# */		PAD_CFG_NF(GPP_E11, NONE, DEEP, NF1),
+/* USB2_OC3# */		PAD_CFG_NF(GPP_E12, NONE, DEEP, NF1),
+/* DDPB_HPD0 */		PAD_CFG_NF(GPP_E13, NONE, DEEP, NF1),
+/* DDPC_HPD1 */		PAD_CFG_NF(GPP_E14, NONE, DEEP, NF1),
+/* DDPD_HPD2 */		PAD_CFG_GPI_ACPI_SMI(GPP_E15, NONE, DEEP, YES), /* EC_SMI_L */
+/* DDPE_HPD3 */		PAD_CFG_GPI_ACPI_SCI(GPP_E16, NONE, DEEP, YES), /* EC_SCI_L */
+/* EDP_HPD */		PAD_CFG_NF(GPP_E17, NONE, DEEP, NF1),
+/* DDPB_CTRLCLK */	PAD_CFG_NC(GPP_E18),
+/* DDPB_CTRLDATA */	PAD_CFG_NF(GPP_E19, NONE, DEEP, NF1),
+/* DDPC_CTRLCLK */	PAD_CFG_NC(GPP_E20),
+/* DDPC_CTRLDATA */	PAD_CFG_NF(GPP_E21, NONE, DEEP, NF1),
+			PAD_CFG_NC(GPP_E22),
+			PAD_CFG_NC(GPP_E23),
+/*
+ * The next 4 pads are for bit banging the amplifiers. They are connected
+ * together with i2s0 signals. For default behavior of i2s make these
+ * gpio inupts.
+ */
+/* I2S2_SCLK */		PAD_CFG_GPI_GPIO_DRIVER(GPP_F0, NONE, DEEP),
+/* I2S2_SFRM */		PAD_CFG_GPI_GPIO_DRIVER(GPP_F1, NONE, DEEP),
+/* I2S2_TXD */		PAD_CFG_GPI_GPIO_DRIVER(GPP_F2, NONE, DEEP),
+/* I2S2_RXD */		PAD_CFG_GPI_GPIO_DRIVER(GPP_F3, NONE, DEEP),
+/* I2C2_SDA */		PAD_CFG_NC(GPP_F4),
+/* I2C2_SCL */		PAD_CFG_NC(GPP_F5),
+/* I2C3_SDA */		PAD_CFG_NC(GPP_F6),
+/* I2C3_SCL */		PAD_CFG_NC(GPP_F7),
+/* I2C4_SDA */		PAD_CFG_NF(GPP_F8, NONE, DEEP, NF1), /* Amplifiers */
+/* I2C4_SCL */		PAD_CFG_NF(GPP_F9, NONE, DEEP, NF1), /* Amplifiers */
+/* I2C5_SDA */		PAD_CFG_GPI_APIC(GPP_F10, NONE, PLTRST), /* MIC_INT_L */
+/* I2C5_SCL */		PAD_CFG_NC(GPP_F11),
+/* EMMC_CMD */		PAD_CFG_NF(GPP_F12, NONE, DEEP, NF1),
+/* EMMC_DATA0 */	PAD_CFG_NF(GPP_F13, NONE, DEEP, NF1),
+/* EMMC_DATA1 */	PAD_CFG_NF(GPP_F14, NONE, DEEP, NF1),
+/* EMMC_DATA2 */	PAD_CFG_NF(GPP_F15, NONE, DEEP, NF1),
+/* EMMC_DATA3 */	PAD_CFG_NF(GPP_F16, NONE, DEEP, NF1),
+/* EMMC_DATA4 */	PAD_CFG_NF(GPP_F17, NONE, DEEP, NF1),
+/* EMMC_DATA5 */	PAD_CFG_NF(GPP_F18, NONE, DEEP, NF1),
+/* EMMC_DATA6 */	PAD_CFG_NF(GPP_F19, NONE, DEEP, NF1),
+/* EMMC_DATA7 */	PAD_CFG_NF(GPP_F20, NONE, DEEP, NF1),
+/* EMMC_RCLK */		PAD_CFG_NF(GPP_F21, NONE, DEEP, NF1),
+/* EMMC_CLK */		PAD_CFG_NF(GPP_F22, NONE, DEEP, NF1),
+/* BOOT_BEEP */		PAD_CFG_GPO(GPP_F23, 1, DEEP),
+/* SD_CMD */		PAD_CFG_NF(GPP_G0, NONE, DEEP, NF1),
+/* SD_DATA0 */		PAD_CFG_NF(GPP_G1, NONE, DEEP, NF1),
+/* SD_DATA1 */		PAD_CFG_NF(GPP_G2, NONE, DEEP, NF1),
+/* SD_DATA2 */		PAD_CFG_NF(GPP_G3, NONE, DEEP, NF1),
+/* SD_DATA3 */		PAD_CFG_NF(GPP_G4, NONE, DEEP, NF1),
+/* SD_CD# */		PAD_CFG_NF(GPP_G5, NONE, DEEP, NF1),
+/* SD_CLK */		PAD_CFG_NF(GPP_G6, NONE, DEEP, NF1),
+/* SD_WP */		PAD_CFG_NF(GPP_G7, 20K_PD, DEEP, NF1),
+/* BATLOW# */		PAD_CFG_NF(GPD0, NONE, DEEP, NF1),
+/* ACPRESENT */		PAD_CFG_NF(GPD1, NONE, DEEP, NF1),
+/* LAN_WAKE# */		PAD_CFG_NF(GPD2, 20K_PU, DEEP, NF1), /* EC_PCH_WAKE_L */
+/* PWRBTN# */		PAD_CFG_NF(GPD3, 20K_PU, DEEP, NF1),
+/* SLP_S3# */		PAD_CFG_NF(GPD4, 20K_PU, DEEP, NF1),
+/* SLP_S4# */		PAD_CFG_NF(GPD5, 20K_PU, DEEP, NF1),
+/* SLP_A# */		PAD_CFG_NF(GPD6, 20K_PU, DEEP, NF1),
+			PAD_CFG_NC(GPD7),
+/* SUSCLK */		PAD_CFG_NF(GPD8, NONE, DEEP, NF1),
+/* SLP_WLAN# */		PAD_CFG_NC(GPD9),
+/* SLP_S5# */		PAD_CFG_NF(GPD10, 20K_PU, DEEP, NF1),
+/* LANPHYC */		PAD_CFG_NC(GPD11),
+};
+
+/* Early pad configuration in romstage. */
+static const struct pad_config early_gpio_table[] = {
+/* UART2_CTS# */	PAD_CFG_GPI_GPIO_DRIVER(GPP_C23, 20K_PU, DEEP), /* PCH_WP */
+};
+
+#endif
+
+#endif
diff --git a/src/mainboard/google/glados/variants/cave/variant.c b/src/mainboard/google/glados/variants/cave/variant.c
new file mode 100644
index 0000000000..2ce0a9001c
--- /dev/null
+++ b/src/mainboard/google/glados/variants/cave/variant.c
@@ -0,0 +1,67 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2015 Google Inc.
+ * Copyright (C) 2015 Intel Corporation
+ *
+ * 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 <baseboard/variant.h>
+#include <gpio.h>
+#include <stdint.h>
+#include <string.h>
+#include <soc/pei_data.h>
+#include <soc/pei_wrapper.h>
+#include <variant/gpio.h>
+
+void mainboard_fill_pei_data(struct pei_data *pei_data)
+{
+	/* DQ byte map */
+	const u8 dq_map[2][12] = {
+		  { 0x0F, 0xF0, 0x00, 0xF0, 0x0F, 0xF0,
+		    0x0F, 0x00, 0xFF, 0x00, 0xFF, 0x00 },
+		  { 0x33, 0xCC, 0x00, 0xCC, 0x33, 0xCC,
+		    0x33, 0x00, 0xFF, 0x00, 0xFF, 0x00 } };
+	/* DQS CPU<>DRAM map */
+	const u8 dqs_map[2][8] = {
+		{ 0, 1, 3, 2, 4, 5, 6, 7 },
+		{ 1, 0, 4, 5, 2, 3, 6, 7 } };
+
+	/* Rcomp resistor */
+	const u16 RcompResistor[3] = { 200, 81, 162 };
+
+	/* Rcomp target */
+	const u16 RcompTarget[5] = { 100, 40, 40, 23, 40 };
+
+	memcpy(pei_data->dq_map, dq_map, sizeof(dq_map));
+	memcpy(pei_data->dqs_map, dqs_map, sizeof(dqs_map));
+	memcpy(pei_data->RcompResistor, RcompResistor,
+		 sizeof(RcompResistor));
+	memcpy(pei_data->RcompTarget, RcompTarget,
+		 sizeof(RcompTarget));
+}
+
+void mainboard_gpio_smi_sleep(void)
+{
+	int i;
+
+	/* Power down the rails on any sleep type. */
+	gpio_t active_high_signals[] = {
+		EN_PP3300_KEPLER,
+		EN_PP3300_DX_TOUCH,
+		EN_PP3300_DX_EMMC,
+		EN_PP1800_DX_EMMC,
+		EN_PP3300_DX_CAM,
+	};
+
+	for (i = 0; i < ARRAY_SIZE(active_high_signals); i++)
+		gpio_set(active_high_signals[i], 0);
+}