google/buddy: Add board as variant of google/auron

Add google/buddy (Acer Chromeboase 24) as a variant of google/auron,
with the following changes:

- add buddy-specific variant code
- add handling to auron for buddy's lan init, which no other variants have
- add handling to auron's mainboard ACPI due buddy having different PCIe
  port assigments than all other variants

Ported from Chromium branch firmware-buddy-6301.202.B, commit
ebb82ce [Buddy: Lock management engine + SPI descriptor]

Test: build/boot Linux on google/buddy using SeaBIOS and Tianocore payloads

Change-Id: Ib76eef47677b72ddaef81a2decef189a5f20c20a
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/28613
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>

19 files changed, 932 insertions, 1 deletions

diff --git a/src/mainboard/google/auron/Kconfig b/src/mainboard/google/auron/Kconfig
index ea0e01f1a4..095f18120c 100644
--- a/src/mainboard/google/auron/Kconfig
+++ b/src/mainboard/google/auron/Kconfig
@@ -12,7 +12,7 @@ config BOARD_GOOGLE_BASEBOARD_AURON
 	select MAINBOARD_HAS_LPC_TPM
 	select MAINBOARD_HAS_TPM1
 	select INTEL_INT15
-	select SYSTEM_TYPE_LAPTOP
+	select SYSTEM_TYPE_LAPTOP if !BOARD_GOOGLE_BUDDY
 
 if BOARD_GOOGLE_BASEBOARD_AURON
 
@@ -32,6 +32,7 @@ config VARIANT_DIR
 	string
 	default "auron_paine" if BOARD_GOOGLE_AURON_PAINE
 	default "auron_yuna" if BOARD_GOOGLE_AURON_YUNA
+	default "buddy" if BOARD_GOOGLE_BUDDY
 	default "gandof" if BOARD_GOOGLE_GANDOF
 	default "lulu" if BOARD_GOOGLE_LULU
 	default "samus" if BOARD_GOOGLE_SAMUS
@@ -40,6 +41,7 @@ config MAINBOARD_PART_NUMBER
 	string
 	default "Auron_Paine" if BOARD_GOOGLE_AURON_PAINE
 	default "Auron_Yuna" if BOARD_GOOGLE_AURON_YUNA
+	default "Buddy" if BOARD_GOOGLE_BUDDY
 	default "Gandof" if BOARD_GOOGLE_GANDOF
 	default "Lulu" if BOARD_GOOGLE_LULU
 	default "Samus" if BOARD_GOOGLE_SAMUS
@@ -49,6 +51,7 @@ config GBB_HWID
 	depends on CHROMEOS
 	default "PAINE TEST A-A 8843" if BOARD_GOOGLE_AURON_PAINE
 	default "YUNA TEST A-A 3347" if BOARD_GOOGLE_AURON_YUNA
+	default "BUDDY TEST A-A 6186" if BOARD_GOOGLE_BUDDY
 	default "GANDOF TEST A-A 7705" if BOARD_GOOGLE_GANDOF
 	default "LULU TEST A-A 7705" if BOARD_GOOGLE_LULU
 	default "SAMUS TEST 8028" if BOARD_GOOGLE_SAMUS
@@ -57,6 +60,7 @@ config DEVICETREE
 	string
 	default "variants/auron_paine/devicetree.cb" if BOARD_GOOGLE_AURON_PAINE
 	default "variants/auron_yuna/devicetree.cb" if BOARD_GOOGLE_AURON_YUNA
+	default "variants/buddy/devicetree.cb" if BOARD_GOOGLE_BUDDY
 	default "variants/gandof/devicetree.cb" if BOARD_GOOGLE_GANDOF
 	default "variants/lulu/devicetree.cb" if BOARD_GOOGLE_LULU
 	default "variants/samus/devicetree.cb" if BOARD_GOOGLE_SAMUS
diff --git a/src/mainboard/google/auron/Kconfig.name b/src/mainboard/google/auron/Kconfig.name
index 324c3ee4d8..19fd4d7fcc 100644
--- a/src/mainboard/google/auron/Kconfig.name
+++ b/src/mainboard/google/auron/Kconfig.name
@@ -8,6 +8,10 @@ config BOARD_GOOGLE_AURON_YUNA
 	bool "->  Auron_Yuna (Acer Chromebook 15 (C910/CB5-531))"
 	select BOARD_GOOGLE_BASEBOARD_AURON
 
+config BOARD_GOOGLE_BUDDY
+	bool "->  Buddy (Acer Chromebase 24)"
+	select BOARD_GOOGLE_BASEBOARD_AURON
+
 config BOARD_GOOGLE_GANDOF
 	bool "->  Gandof (Toshiba Chromebook 2 (2015))"
 	select BOARD_GOOGLE_BASEBOARD_AURON
diff --git a/src/mainboard/google/auron/Makefile.inc b/src/mainboard/google/auron/Makefile.inc
index d54a1c0bd5..170e1686da 100644
--- a/src/mainboard/google/auron/Makefile.inc
+++ b/src/mainboard/google/auron/Makefile.inc
@@ -23,7 +23,9 @@ smm-$(CONFIG_HAVE_SMI_HANDLER) += smihandler.c
 romstage-y += variants/$(VARIANT_DIR)/pei_data.c
 ramstage-y += variants/$(VARIANT_DIR)/pei_data.c
 
+ifneq ($(CONFIG_BOARD_GOOGLE_BUDDY),y)
 romstage-y += variants/$(VARIANT_DIR)/variant.c
+endif
 ramstage-y += variants/$(VARIANT_DIR)/variant.c
 
 subdirs-y += variants/$(VARIANT_DIR)
diff --git a/src/mainboard/google/auron/acpi/mainboard.asl b/src/mainboard/google/auron/acpi/mainboard.asl
index 907590dcb5..204c1c4ecd 100644
--- a/src/mainboard/google/auron/acpi/mainboard.asl
+++ b/src/mainboard/google/auron/acpi/mainboard.asl
@@ -16,6 +16,7 @@
 
 #include <variant/onboard.h>
 
+#if !IS_ENABLED(CONFIG_BOARD_GOOGLE_BUDDY)
 Scope (\_SB.PCI0.RP01)
 {
 	Device (WLAN)
@@ -34,6 +35,7 @@ Scope (\_SB.PCI0.RP01)
 		}
 	}
 }
+#endif
 
 #include <variant/acpi/mainboard.asl>
 
diff --git a/src/mainboard/google/auron/mainboard.c b/src/mainboard/google/auron/mainboard.c
index 9eece731b0..2cbd0e78c2 100644
--- a/src/mainboard/google/auron/mainboard.c
+++ b/src/mainboard/google/auron/mainboard.c
@@ -20,9 +20,14 @@
 #include "variant.h"
 
 
+__weak void lan_init(void)
+{
+}
+
 static void mainboard_init(struct device *dev)
 {
 	mainboard_ec_init();
+	lan_init();
 }
 
 static int mainboard_smbios_data(struct device *dev, int *handle,
diff --git a/src/mainboard/google/auron/variant.h b/src/mainboard/google/auron/variant.h
index 41c157fd65..b11ea1eb0f 100644
--- a/src/mainboard/google/auron/variant.h
+++ b/src/mainboard/google/auron/variant.h
@@ -20,5 +20,6 @@
 
 int variant_smbios_data(device_t dev, int *handle, unsigned long *current);
 void variant_romstage_entry(struct romstage_params *rp);
+void lan_init(void);
 
 #endif
diff --git a/src/mainboard/google/auron/variants/buddy/devicetree.cb b/src/mainboard/google/auron/variants/buddy/devicetree.cb
new file mode 100644
index 0000000000..e6627949b5
--- /dev/null
+++ b/src/mainboard/google/auron/variants/buddy/devicetree.cb
@@ -0,0 +1,111 @@
+chip soc/intel/broadwell
+
+	# Enable eDP Hotplug with 6ms pulse
+	register "gpu_dp_d_hotplug" = "0x06"
+
+	# Disable DisplayPort C Hotplug
+	register "gpu_dp_c_hotplug" = "0x00"
+
+	# Enable HDMI Hotplug with 6ms pulse
+	register "gpu_dp_b_hotplug" = "0x06"
+
+	# Set backlight PWM values for eDP
+	register "gpu_cpu_backlight" = "0x00000200"
+	register "gpu_pch_backlight" = "0x04000000"
+
+	# Enable Panel and configure power delays
+	register "gpu_panel_port_select" = "1"			# eDP
+	register "gpu_panel_power_cycle_delay" = "5"		# 400ms
+	register "gpu_panel_power_up_delay" = "400"		# 40ms
+	register "gpu_panel_power_down_delay" = "150"		# 15ms
+	register "gpu_panel_power_backlight_on_delay" = "70"	# 7ms
+	register "gpu_panel_power_backlight_off_delay" = "2100"	# 210ms
+
+	register "pirqa_routing" = "0x8b"
+	register "pirqb_routing" = "0x8a"
+	register "pirqc_routing" = "0x8b"
+	register "pirqd_routing" = "0x8b"
+	register "pirqe_routing" = "0x80"
+	register "pirqf_routing" = "0x80"
+	register "pirqg_routing" = "0x80"
+	register "pirqh_routing" = "0x80"
+
+	# EC range is 0x800-0x9ff
+	register "gen1_dec" = "0x00fc0801"
+	register "gen2_dec" = "0x00fc0901"
+
+	# EC_SMI is GPIO34
+	register "alt_gp_smi_en" = "0x0004"
+	register "gpe0_en_1" = "0x00000000"
+	# EC_SCI is GPIO36
+	register "gpe0_en_2" = "0x00000010"
+	register "gpe0_en_3" = "0x00000000"
+	register "gpe0_en_4" = "0x00000000"
+
+	register "sata_port_map" = "0x1"
+	register "sata_devslp_disable" = "0x1"
+
+	register "sio_acpi_mode" = "1"
+	register "sio_i2c0_voltage" = "1" # 1.8V
+	register "sio_i2c1_voltage" = "0" # 3.3V
+
+	# DTLE DATA / EDGE values
+	register "sata_port0_gen3_dtle" = "0x5"
+	register "sata_port1_gen3_dtle" = "0x5"
+
+	# Force enable ASPM for PCIe Port 5
+	register "pcie_port_force_aspm" = "0x10"
+
+	# Enable port coalescing
+	register "pcie_port_coalesce" = "1"
+
+	# Disable PCIe CLKOUT 1,5 and CLKOUT_XDP
+	register "icc_clock_disable" = "0x01220000"
+
+	register "s0ix_enable" = "0"
+
+	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 # vga controller
+		device pci 03.0 on end # mini-hd audio
+		device pci 13.0 on end # Smart Sound Audio DSP
+		device pci 14.0 on end # USB3 XHCI
+		device pci 15.0 on end # Serial I/O DMA
+		device pci 15.1 on end # I2C0
+		device pci 15.2 on end # I2C1
+		device pci 15.3 off end # GSPI0
+		device pci 15.4 off end # GSPI1
+		device pci 15.5 off end # UART0
+		device pci 15.6 off end # UART1
+		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
+		device pci 17.0 off end # SDIO
+		device pci 19.0 off end # GbE
+		device pci 1b.0 off end # High Definition Audio
+		device pci 1c.0 off end # PCIe Port #1
+		device pci 1c.1 off end # PCIe Port #2
+		device pci 1c.2 on end # PCIe Port #3
+		device pci 1c.3 on end # PCIe Port #4
+		device pci 1c.4 on end # PCIe Port #5
+		device pci 1c.5 off end # PCIe Port #6
+		device pci 1d.0 on end # USB2 EHCI
+		device pci 1e.0 off end # PCI bridge
+		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 bridge
+		device pci 1f.2 on end # SATA Controller
+		device pci 1f.3 on end # SMBus
+		device pci 1f.6 on end # Thermal
+	end
+end
diff --git a/src/mainboard/google/auron/variants/buddy/include/variant/acpi/ec.asl b/src/mainboard/google/auron/variants/buddy/include/variant/acpi/ec.asl
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/src/mainboard/google/auron/variants/buddy/include/variant/acpi/ec.asl
diff --git a/src/mainboard/google/auron/variants/buddy/include/variant/acpi/mainboard.asl b/src/mainboard/google/auron/variants/buddy/include/variant/acpi/mainboard.asl
new file mode 100644
index 0000000000..788fbdc61e
--- /dev/null
+++ b/src/mainboard/google/auron/variants/buddy/include/variant/acpi/mainboard.asl
@@ -0,0 +1,143 @@
+/*
+ * 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.
+ */
+
+Scope (\_SB.PCI0.I2C0)
+{
+	Device (RTEK)
+	{
+		Name (_HID, "10EC5650")
+		Name (_CID, "10EC5650")
+		Name (_DDN, "RTEK Codec Controller ")
+		Name (_UID, 1)
+
+		Name (_CRS, ResourceTemplate()
+		{
+			I2cSerialBus (
+				0x1A,                     // SlaveAddress
+				ControllerInitiated,      // SlaveMode
+				400000,                   // ConnectionSpeed
+				AddressingMode7Bit,       // AddressingMode
+				"\\_SB.PCI0.I2C0",        // ResourceSource
+			)
+
+			Interrupt (ResourceConsumer, Edge, ActiveLow){ 37 }
+		})
+
+		Method (_STA)
+		{
+			If (LEqual (\S1EN, 1)) {
+				Return (0xF)
+			} Else {
+				Return (0x0)
+			}
+		}
+	}
+}
+
+Scope (\_SB.PCI0.I2C1)
+{
+	Device (ETSA)
+	{
+		Name (_HID, "ELAN0001")
+		Name (_DDN, "Elan Touchscreen")
+		Name (_UID, 6)
+		Name (ISTP, 0) /* Touchscreen */
+
+		Name (_CRS, ResourceTemplate()
+		{
+			I2cSerialBus (
+				0x10,                     // SlaveAddress
+				ControllerInitiated,      // SlaveMode
+				400000,                   // ConnectionSpeed
+				AddressingMode7Bit,       // AddressingMode
+				"\\_SB.PCI0.I2C1",        // ResourceSource
+			)
+			Interrupt (ResourceConsumer, Level, ActiveLow)
+			{
+				BOARD_TOUCHSCREEN_IRQ
+			}
+		})
+
+		Method (_STA)
+		{
+			If (LEqual (\S2EN, 1)) {
+				Return (0xF)
+			} Else {
+				Return (0x0)
+			}
+		}
+
+		Name (_PRW, Package() { BOARD_TOUCHSCREEN_WAKE_GPIO, 0x3 })
+
+		Method (_DSW, 3, NotSerialized)
+		{
+			Store (BOARD_TOUCHSCREEN_WAKE_GPIO, Local0)
+			If (LEqual (Arg0, 1)) {
+				// Enable GPIO as wake source
+				\_SB.PCI0.LPCB.GPIO.GWAK (Local0)
+			}
+		}
+
+		/* Allow device to power off in S0 */
+		Name (_S0W, 4)
+	}
+}
+
+/*
+ * LAN connected to Root Port 3, becomes Root Port 1 after coalesce
+ */
+Scope (\_SB.PCI0.RP01)
+{
+	Device (ETH0)
+	{
+		Name (_ADR, 0x00000000)
+		Name (_PRW, Package() { BUDDY_NIC_WAKE_GPIO, 3 })
+
+		Method (_DSW, 3, NotSerialized)
+		{
+			Store (BUDDY_NIC_WAKE_GPIO, Local0)
+
+			If (LEqual (Arg0, 1)) {
+				// Enable GPIO as wake source
+				\_SB.PCI0.LPCB.GPIO.GWAK (Local0)
+			}
+		}
+	}
+}
+
+/*
+ * WLAN connected to Root Port 4, becomes Root Port 2 after coalesce
+ */
+Scope (\_SB.PCI0.RP02)
+{
+	Device (WLAN)
+	{
+		Name (_ADR, 0x00000000)
+
+		/* GPIO10 is WLAN_WAKE_L_Q */
+		Name (GPIO, BOARD_WLAN_WAKE_GPIO)
+
+		Name (_PRW, Package() { GPIO, 3 })
+
+		Method (_DSW, 3, NotSerialized)
+		{
+			If (LEqual (Arg0, 1)) {
+				// Enable GPIO as wake source
+				\_SB.PCI0.LPCB.GPIO.GWAK (^GPIO)
+			}
+		}
+	}
+}
diff --git a/src/mainboard/google/auron/variants/buddy/include/variant/acpi/usb.asl b/src/mainboard/google/auron/variants/buddy/include/variant/acpi/usb.asl
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/src/mainboard/google/auron/variants/buddy/include/variant/acpi/usb.asl
diff --git a/src/mainboard/google/auron/variants/buddy/include/variant/gpio.h b/src/mainboard/google/auron/variants/buddy/include/variant/gpio.h
new file mode 100644
index 0000000000..efa720f60d
--- /dev/null
+++ b/src/mainboard/google/auron/variants/buddy/include/variant/gpio.h
@@ -0,0 +1,121 @@
+/*
+ * 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 BUDDY_GPIO_H
+#define BUDDY_GPIO_H
+
+#include <soc/gpio.h>
+
+static const struct gpio_config mainboard_gpio_config[] = {
+	PCH_GPIO_UNUSED,        /* 0: UNUSED */
+	PCH_GPIO_UNUSED,        /* 1: UNUSED */
+	PCH_GPIO_UNUSED,        /* 2: UNUSED */
+	PCH_GPIO_UNUSED,        /* 3: UNUSED */
+	PCH_GPIO_NATIVE,        /* 4: NATIVE: I2C0_SDA_GPIO4 */
+	PCH_GPIO_NATIVE,        /* 5: NATIVE: I2C0_SCL_GPIO5 */
+	PCH_GPIO_NATIVE,        /* 6: NATIVE: I2C1_SDA_GPIO6 */
+	PCH_GPIO_NATIVE,        /* 7: NATIVE: I2C1_SCL_GPIO7 */
+	PCH_GPIO_ACPI_SCI,      /* 8: LAN_WAKE_L_Q */
+	PCH_GPIO_OUT_HIGH,      /* 9: PP3300_WLAN_EN */
+	PCH_GPIO_ACPI_SCI,      /* 10: WLAN_WAKE_L_Q */
+	PCH_GPIO_UNUSED,        /* 11: SMBALERT */
+	PCH_GPIO_INPUT_INVERT,  /* 12: RECOVERY_L */
+	PCH_GPIO_OUT_HIGH,      /* 13: BT_DISABLE_L */
+	PCH_GPIO_INPUT,         /* 14: EC_IN_RW */
+	PCH_GPIO_UNUSED,        /* 15: UNUSED (STRAP) */
+	PCH_GPIO_UNUSED,        /* 16: UNUSED */
+	PCH_GPIO_OUT_HIGH,      /* 17: PP3300_VP8_EN */
+	PCH_GPIO_UNUSED,        /* 18: UNUSED */
+	PCH_GPIO_UNUSED,        /* 19: UNUSED */
+	PCH_GPIO_NATIVE,        /* 20: NATIVE: CLK_PCIE_REQ2# */
+	PCH_GPIO_NATIVE,        /* 21: NATIVE: CLK_PCIE_REQ3# */
+	PCH_GPIO_NATIVE,        /* 22: NATIVE: CLK_PCIE_REQ4# */
+	PCH_GPIO_UNUSED,        /* 23: UNUSED */
+	PCH_GPIO_OUT_HIGH,      /* 24: WLAN_OFF_L */
+	PCH_GPIO_INPUT_INVERT,  /* 25: TOUCH_INT_L (WAKE) */
+	PCH_GPIO_OUT_HIGH,      /* 26: USB_CTL_1 */
+	PCH_GPIO_UNUSED,        /* 27: UNUSED */
+	PCH_GPIO_OUT_LOW,       /* 28: USB_ILIM_SEL */
+	PCH_GPIO_UNUSED,        /* 29: UNUSED */
+	PCH_GPIO_NATIVE,        /* 30: NATIVE: PCH_SUSPWRACK_L */
+	PCH_GPIO_NATIVE,        /* 31: NATIVE: PCH_ACPRESENT */
+	PCH_GPIO_NATIVE,        /* 32: NATIVE: CLKRUN# */
+	PCH_GPIO_NATIVE,        /* 33: NATIVE: DEVSLP0 */
+	PCH_GPIO_ACPI_SMI,      /* 34: EC_SMI_L */
+	PCH_GPIO_ACPI_SMI,      /* 35: PCH_NMI_DBG_L (route in NMI_EN) */
+	PCH_GPIO_ACPI_SCI,      /* 36: EC_SCI_L */
+	PCH_GPIO_UNUSED,        /* 37: UNUSED */
+	PCH_GPIO_UNUSED,        /* 38: UNUSED */
+	PCH_GPIO_UNUSED,        /* 39: UNUSED */
+	PCH_GPIO_NATIVE,        /* 40: NATIVE: USB_OC0# */
+	PCH_GPIO_NATIVE,        /* 41: NATIVE: USB_OC1# */
+	PCH_GPIO_NATIVE,        /* 42: NATIVE: USB_OC2# */
+	PCH_GPIO_UNUSED,        /* 43: UNUSED */
+	PCH_GPIO_UNUSED,        /* 44: UNUSED */
+	PCH_GPIO_OUT_HIGH,      /* 45: PP3300_CODEC_EN */
+	PCH_GPIO_UNUSED,        /* 46: UNUSED */
+	PCH_GPIO_UNUSED,        /* 47: UNUSED */
+	PCH_GPIO_UNUSED,        /* 48: UNUSED */
+	PCH_GPIO_UNUSED,        /* 49: UNUSED */
+	PCH_GPIO_OUT_HIGH,      /* 50: VP8_DISABLE_L */
+	PCH_GPIO_UNUSED,        /* 51: UNUSED */
+	PCH_GPIO_UNUSED,        /* 52: UNUSED */
+	PCH_GPIO_PIRQ_INVERT,   /* 53: CODEC_INT */
+	PCH_GPIO_PIRQ,          /* 54: TOUCH_INT_L_DX */
+	PCH_GPIO_UNUSED,        /* 55: UNUSED */
+	PCH_GPIO_OUT_HIGH,      /* 56: USB_CHARGE_EN */
+	PCH_GPIO_UNUSED,        /* 57: UNUSED */
+	PCH_GPIO_INPUT,         /* 58: PCH_SPI_WP_D */
+	PCH_GPIO_OUT_HIGH,      /* 59: PP3300_LAN_EN */
+	PCH_GPIO_NATIVE,        /* 60: NATIVE: SMB0ALERT# */
+	PCH_GPIO_NATIVE,        /* 61: SUS_STAT# */
+	PCH_GPIO_UNUSED,        /* 62: UNUSED */
+	PCH_GPIO_NATIVE,        /* 63: NATIVE: PCH_SLP_S5_L */
+	PCH_GPIO_UNUSED,        /* 64: UNUSED */
+	PCH_GPIO_UNUSED,        /* 65: UNUSED */
+	PCH_GPIO_UNUSED,        /* 66: UNUSED (STRAP) */
+	PCH_GPIO_UNUSED,        /* 67: UNUSED */
+	PCH_GPIO_UNUSED,        /* 68: UNUSED */
+	PCH_GPIO_UNUSED,        /* 69: UNUSED */
+	PCH_GPIO_UNUSED,        /* 70: UNUSED */
+	PCH_GPIO_NATIVE,        /* 71: NATIVE: MODPHY_EN */
+	PCH_GPIO_UNUSED,        /* 72: UNUSED */
+	PCH_GPIO_UNUSED,        /* 73: UNUSED */
+	PCH_GPIO_NATIVE,        /* 74: NATIVE: SMB_ME1_DAT */
+	PCH_GPIO_NATIVE,        /* 75: NATIVE: SMB_ME1_CLK */
+	PCH_GPIO_UNUSED,        /* 76: UNUSED */
+	PCH_GPIO_UNUSED,        /* 77: UNUSED */
+	PCH_GPIO_UNUSED,        /* 78: UNUSED */
+	PCH_GPIO_UNUSED,        /* 79: UNUSED */
+	PCH_GPIO_UNUSED,        /* 80: UNUSED */
+	PCH_GPIO_NATIVE,        /* 81: NATIVE: SPKR */
+	PCH_GPIO_NATIVE,        /* 82: NATIVE: EC_RCIN_L */
+	PCH_GPIO_UNUSED,        /* 83: UNUSED */
+	PCH_GPIO_UNUSED,        /* 84: UNUSED */
+	PCH_GPIO_UNUSED,        /* 85: UNUSED */
+	PCH_GPIO_UNUSED,        /* 86: UNUSED (STRAP) */
+	PCH_GPIO_UNUSED,        /* 87: UNUSED */
+	PCH_GPIO_UNUSED,        /* 88: UNUSED */
+	PCH_GPIO_UNUSED,        /* 89: UNUSED */
+	PCH_GPIO_UNUSED,        /* 90: UNUSED */
+	PCH_GPIO_UNUSED,        /* 91: UNUSED */
+	PCH_GPIO_UNUSED,        /* 92: UNUSED */
+	PCH_GPIO_UNUSED,        /* 93: UNUSED */
+	PCH_GPIO_UNUSED,        /* 94: UNUSED */
+	PCH_GPIO_END
+};
+
+#endif
diff --git a/src/mainboard/google/auron/variants/buddy/include/variant/hda_verb.h b/src/mainboard/google/auron/variants/buddy/include/variant/hda_verb.h
new file mode 100644
index 0000000000..7fd9853d8e
--- /dev/null
+++ b/src/mainboard/google/auron/variants/buddy/include/variant/hda_verb.h
@@ -0,0 +1,121 @@
+/*
+ * 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 <device/azalia_device.h>
+
+const u32 cim_verb_data[] = {
+	/* coreboot specific header */
+	0x10ec0283,	// Codec Vendor / Device ID: Realtek ALC283
+	0x10ec0283,	// Subsystem ID
+	0x0000000d,	// Number of jacks (NID entries)
+
+	0x0017ff00,	// Function Reset
+	0x0017ff00,	// Double Function Reset
+	0x000F0000,	// Pad - get vendor id
+	0x000F0002,	// Pad - get revision id
+
+	/* Bits 31:28 - Codec Address */
+	/* Bits 27:20 - NID */
+	/* Bits 19:8 - Verb ID */
+	/* Bits 7:0  - Payload */
+
+	/* NID 0x01, HDA Codec Subsystem ID Verb Table: 0x10ec0283 */
+	0x00172083,
+	0x00172102,
+	0x001722ec,
+	0x00172310,
+
+	/* Pin Widget Verb Table */
+
+	/* Pin Complex (NID 0x12) DMIC - Disabled */
+	0x01271cf0, //
+	0x01271d11, //
+	0x01271e11, //
+	0x01271f41, //
+
+	/* Pin Complex (NID 0x14) SPKR-OUT - Internal Speakers */
+	0x01471c10, // group 1, cap 0
+	0x01471d01, // no connector, no jack detect
+	0x01471e17, // speaker out, analog
+	0x01471f90, // fixed function, internal, Location N/A
+
+	/* Pin Complex (NID 0x17) MONO Out - Disabled */
+	0x01771cf0, //
+	0x01771d11, //
+	0x01771e11, //
+	0x01771f41, //
+
+	/* Pin Complex (NID 0x18) Disabled */
+	0x01871cf0, //
+	0x01871d11, //
+	0x01871e11, //
+	0x01871f41, //
+
+	/* Pin Complex (NID 0x19)  MIC2 - 3.5mm Jack */
+	0x01971c20, // group2, cap 0
+	0x01971d10, // black, jack detect
+	0x01971ea1, // Mic in, 3.5mm Jack
+	0x01971f03, // connector, External left panel
+
+	/* Pin Complex (NID 0x1A)  LINE1 - Internal Mic */
+	0x01a71c11, // group 1, cap 1
+	0x01a71d01, // no connector, no jack detect
+	0x01a71ea7, // mic in, analog connection
+	0x01a71f90, // Fixed function, internal, Location N/A
+
+	/* Pin Complex (NID 0x1B)  LINE2 - Disabled */
+	0x01b71cf0, //
+	0x01b71d11, //
+	0x01b71e11, //
+	0x01b71f41, //
+
+	/* Pin Complex (NID 0x1D)  PCBeep */
+	0x01d71c2d, // eapd low on ex-amp, laptop, custom enable
+	0x01d71d81, // mute spkr on hpout
+	0x01d71e15, // pcbeep en able, checksum
+	0x01d71f40, // no physical, Internal, Location N/A
+
+	/* Pin Complex (NID 0x1E)  SPDIF-OUT - Disabled*/
+	0x01e71cf0, //
+	0x01e71d11, //
+	0x01e71e11, //
+	0x01e71f41, //
+
+	/* Pin Complex (NID 0x21) HP-OUT - 3.5mm Jack*/
+	0x02171c21, // group2, cap 1
+	0x02171d10, // black, jack detect
+	0x02171e21, // HPOut, 3.5mm Jack
+	0x02171f03, // connector, left panel
+
+	/* Undocumented settings from Realtek (needed for beep_gen) */
+	/* Widget node 0x20 */
+	0x02050010,
+	0x02040c20,
+	0x0205001b,
+	0x0204081b,
+};
+
+const u32 pc_beep_verbs[] = {
+	0x00170500,	/* power up everything (codec, dac, adc, mixers)  */
+	0x01470c00,	/* set speaker EAPD pin to low */
+	0x01470740,	/* enable speaker out */
+	0x0143b01f,	/* unmute speaker */
+	0x00c37100,	/* unmute mixer nid 0xc input 1 */
+	0x00b37410,	/* unmute mixer nid 0xb beep input and set volume */
+	0x01470c02,	/* set speaker EAPD pin to high */
+};
+
+AZALIA_ARRAY_SIZES;
diff --git a/src/mainboard/google/auron/variants/buddy/include/variant/onboard.h b/src/mainboard/google/auron/variants/buddy/include/variant/onboard.h
new file mode 100644
index 0000000000..0b2c6641f0
--- /dev/null
+++ b/src/mainboard/google/auron/variants/buddy/include/variant/onboard.h
@@ -0,0 +1,41 @@
+/*
+ * 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
+
+/* defines for programming the MAC address */
+#define BUDDY_NIC_VENDOR_ID		0x10EC
+#define BUDDY_NIC_DEVICE_ID		0x8168
+
+/* 0x00: White LINK LED and Amber ACTIVE LED */
+#define BUDDY_NIC_LED_MODE		0x00
+
+#define BOARD_TOUCHSCREEN_NAME		"touchscreen"
+#define BOARD_TOUCHSCREEN_IRQ		38	/* PIRQW */
+#define BOARD_TOUCHSCREEN_WAKE_GPIO	25	/* GPIO25 */
+#define BOARD_TOUCHSCREEN_I2C_BUS	2	/* I2C1 */
+#define BOARD_TOUCHSCREEN_I2C_ADDR	0x10
+
+/* NIC wake is GPIO 8 */
+#define BUDDY_NIC_WAKE_GPIO		8
+
+/* WLAN wake is GPIO 10 */
+#define BOARD_WLAN_WAKE_GPIO		10
+#define BOARD_PP3300_CODEC_GPIO		45	/* GPIO45 */
+#define BOARD_WLAN_DISABLE_GPIO		46	/* GPIO46 */
+
+#endif
diff --git a/src/mainboard/google/auron/variants/buddy/include/variant/spd.h b/src/mainboard/google/auron/variants/buddy/include/variant/spd.h
new file mode 100644
index 0000000000..cfdaca05a6
--- /dev/null
+++ b/src/mainboard/google/auron/variants/buddy/include/variant/spd.h
@@ -0,0 +1,23 @@
+/*
+ * 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 MAINBOARD_SPD_H
+#define MAINBOARD_SPD_H
+
+struct pei_data;
+void mainboard_fill_spd_data(struct pei_data *pei_data);
+
+#endif
diff --git a/src/mainboard/google/auron/variants/buddy/include/variant/thermal.h b/src/mainboard/google/auron/variants/buddy/include/variant/thermal.h
new file mode 100644
index 0000000000..ae5c8f0e97
--- /dev/null
+++ b/src/mainboard/google/auron/variants/buddy/include/variant/thermal.h
@@ -0,0 +1,36 @@
+/*
+ * 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 THERMAL_H
+#define THERMAL_H
+
+/* Control TDP Settings */
+#define CTL_TDP_SENSOR_ID		0	/* PECI */
+#define CTL_TDP_POWER_LIMIT		12	/* 12W */
+#define CTL_TDP_THRESHILD_NORMAL	0	/*Normal TDP Threshold*/
+#define CTL_TDP_THRESHOLD_OFF		85	/* Normal at 85C */
+#define CTL_TDP_THRESHOLD_ON		90	/* Limited at 90C */
+
+/* Temperature which OS will shutdown at */
+#define CRITICAL_TEMPERATURE		104
+
+/* Temperature which OS will throttle CPU */
+#define PASSIVE_TEMPERATURE		95
+
+/* Tj_max value for calculating PECI CPU temperature */
+#define MAX_TEMPERATURE			105
+
+#endif
diff --git a/src/mainboard/google/auron/variants/buddy/pei_data.c b/src/mainboard/google/auron/variants/buddy/pei_data.c
new file mode 100644
index 0000000000..159d5f6d1e
--- /dev/null
+++ b/src/mainboard/google/auron/variants/buddy/pei_data.c
@@ -0,0 +1,60 @@
+/*
+ * 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 <stdint.h>
+#include <string.h>
+#include <soc/gpio.h>
+#include <soc/pei_data.h>
+#include <soc/pei_wrapper.h>
+
+void mainboard_fill_pei_data(struct pei_data *pei_data)
+{
+	pei_data->ec_present = 1;
+
+	/* P0: Side USB3.0 port, USB3S1 */
+	pei_data_usb2_port(pei_data, 0, 0x0150, 1, 0,
+			   USB_PORT_INTERNAL);
+	/* P1: Rear USB3.0 port, USB3R1 */
+	pei_data_usb2_port(pei_data, 1, 0x0040, 1, 0,
+			   USB_PORT_INTERNAL);
+	/* P2: Rear USB3.0 port, USB3R2 */
+	pei_data_usb2_port(pei_data, 2, 0x0080, 1, 1,
+			   USB_PORT_INTERNAL);
+	/* P3: Card Rearder, CRS1 */
+	pei_data_usb2_port(pei_data, 3, 0x0040, 1, USB_OC_PIN_SKIP,
+			   USB_PORT_INTERNAL);
+	/* P4: Rear USB2.0 port, USB2R1 */
+	pei_data_usb2_port(pei_data, 4, 0x0040, 1, 2,
+			   USB_PORT_INTERNAL);
+	/* P5: 2D Camera */
+	pei_data_usb2_port(pei_data, 5, 0x0000, 1, USB_OC_PIN_SKIP,
+			   USB_PORT_INTERNAL);
+	/* P6: VP8 */
+	pei_data_usb2_port(pei_data, 6, 0x0150, 1, USB_OC_PIN_SKIP,
+			   USB_PORT_MINI_PCIE);
+	/* P7: WLAN & BT */
+	pei_data_usb2_port(pei_data, 7, 0x0000, 1, USB_OC_PIN_SKIP,
+			   USB_PORT_MINI_PCIE);
+
+	/* P1: Side USB3.0 port, USB3S1 */
+	pei_data_usb3_port(pei_data, 0, 1, 0, 0);
+	/* P2: Rear USB3.0 port, USB3R1 */
+	pei_data_usb3_port(pei_data, 1, 1, 0, 0);
+	/* P3: Rear USB3.0 port, USB3R2 */
+	pei_data_usb3_port(pei_data, 2, 1, 1, 0);
+	/* P4: Card Rearder, CRS1 */
+	pei_data_usb3_port(pei_data, 3, 1, USB_OC_PIN_SKIP, 0);
+}
diff --git a/src/mainboard/google/auron/variants/buddy/spd/Makefile.inc b/src/mainboard/google/auron/variants/buddy/spd/Makefile.inc
new file mode 100644
index 0000000000..275d9836dd
--- /dev/null
+++ b/src/mainboard/google/auron/variants/buddy/spd/Makefile.inc
@@ -0,0 +1,16 @@
+##
+## 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.
+##
+
+romstage-y += spd.c
diff --git a/src/mainboard/google/auron/variants/buddy/spd/spd.c b/src/mainboard/google/auron/variants/buddy/spd/spd.c
new file mode 100644
index 0000000000..93e9fb2551
--- /dev/null
+++ b/src/mainboard/google/auron/variants/buddy/spd/spd.c
@@ -0,0 +1,32 @@
+/*
+ * 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 <soc/pei_data.h>
+#include <variant/spd.h>
+
+/* Copy SPD data for on-board memory */
+void mainboard_fill_spd_data(struct pei_data *pei_data)
+{
+	pei_data->spd_addresses[0] = 0xa0;
+	pei_data->spd_addresses[1] = 0x00;
+	pei_data->spd_addresses[2] = 0xa4;
+	pei_data->spd_addresses[3] = 0x00;
+	pei_data->dimm_channel0_disabled = 2;
+	pei_data->dimm_channel1_disabled = 2;
+	/* Enable 2x refresh mode */
+	pei_data->ddr_refresh_2x = 1;
+	pei_data->dq_pins_interleaved = 1;
+}
diff --git a/src/mainboard/google/auron/variants/buddy/variant.c b/src/mainboard/google/auron/variants/buddy/variant.c
new file mode 100644
index 0000000000..c682e367b2
--- /dev/null
+++ b/src/mainboard/google/auron/variants/buddy/variant.c
@@ -0,0 +1,209 @@
+/*
+ * 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.
+ */
+
+#include <cbfs.h>
+#include <fmap.h>
+#include <types.h>
+#include <string.h>
+#include <arch/io.h>
+#include <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <smbios.h>
+#include <soc/pch.h>
+#include <variant/onboard.h>
+#include <mainboard/google/auron/variant.h>
+
+int variant_smbios_data(device_t dev, int *handle,
+				 unsigned long *current)
+{
+	int len = 0;
+
+	len += smbios_write_type41(
+		current, handle,
+		BOARD_TOUCHSCREEN_NAME,		/* name */
+		BOARD_TOUCHSCREEN_IRQ,		/* instance */
+		BOARD_TOUCHSCREEN_I2C_BUS,	/* segment */
+		BOARD_TOUCHSCREEN_I2C_ADDR,	/* bus */
+		0,				/* device */
+		0);				/* function */
+
+	return len;
+}
+
+static unsigned int search(char *p, u8 *a, unsigned int lengthp,
+			   unsigned int lengtha)
+{
+	int i, j;
+
+	/* Searching */
+	for (j = 0; j <= lengtha - lengthp; j++) {
+		for (i = 0; i < lengthp && p[i] == a[i + j]; i++)
+			;
+		if (i >= lengthp)
+			return j;
+	}
+	return lengtha;
+}
+
+static unsigned char get_hex_digit(u8 *offset)
+{
+	unsigned char retval = 0;
+
+	retval = *offset - '0';
+	if (retval > 0x09) {
+		retval = *offset - 'A' + 0x0A;
+		if (retval > 0x0F)
+			retval = *offset - 'a' + 0x0a;
+	}
+	if (retval > 0x0F) {
+		printk(BIOS_DEBUG, "Error: Invalid Hex digit found: %c - 0x%02x\n",
+			*offset, *offset);
+		retval = 0;
+	}
+
+	return retval;
+}
+
+static int get_mac_address(u32 *high_dword, u32 *low_dword,
+			   u8 *search_address, u32 search_length)
+{
+	char key[] = "ethernet_mac";
+	unsigned int offset;
+	int i;
+
+	offset = search(key, search_address, sizeof(key) - 1, search_length);
+	if (offset == search_length) {
+		printk(BIOS_DEBUG,
+		       "Error: Could not locate '%s' in VPD\n", key);
+		return 0;
+	}
+	printk(BIOS_DEBUG, "Located '%s' in VPD\n", key);
+
+	offset += sizeof(key);	/* move to next character */
+	*high_dword = 0;
+
+	/* Fetch the MAC address and put the octets in the correct order to
+	 * be programmed.
+	 *
+	 * From RTL8105E_Series_EEPROM-Less_App_Note_1.1
+	 * If the MAC address is 001122334455h:
+	 * Write 33221100h to I/O register offset 0x00 via double word access
+	 * Write 00005544h to I/O register offset 0x04 via double word access
+	 */
+
+	for (i = 0; i < 4; i++) {
+		*high_dword |= (get_hex_digit(search_address + offset)
+				<< (4 + (i * 8)));
+		*high_dword |= (get_hex_digit(search_address + offset + 1)
+				<< (i * 8));
+		offset += 3;
+	}
+
+	*low_dword = 0;
+	for (i = 0; i < 2; i++) {
+		*low_dword |= (get_hex_digit(search_address + offset)
+			       << (4 + (i * 8)));
+		*low_dword |= (get_hex_digit(search_address + offset + 1)
+			       << (i * 8));
+		offset += 3;
+	}
+
+	return *high_dword | *low_dword;
+}
+
+static void program_mac_address(u16 io_base)
+{
+	void *search_address = NULL;
+	size_t search_length = -1;
+
+	/* Default MAC Address of A0:00:BA:D0:0B:AD */
+	u32 high_dword = 0xD0BA00A0;	/* high dword of mac address */
+	u32 low_dword = 0x0000AD0B;	/* low word of mac address as a dword */
+
+	if (IS_ENABLED(CONFIG_CHROMEOS)) {
+		struct region_device rdev;
+
+		if (fmap_locate_area_as_rdev("RO_VPD", &rdev) == 0) {
+			search_address = rdev_mmap_full(&rdev);
+
+			if (search_address != NULL)
+				search_length = region_device_sz(&rdev);
+		}
+	} else {
+		search_address = cbfs_boot_map_with_leak("vpd.bin",
+							CBFS_TYPE_RAW,
+							&search_length);
+	}
+
+	if (search_address == NULL)
+		printk(BIOS_ERR, "LAN: VPD not found.\n");
+	else
+		get_mac_address(&high_dword, &low_dword, search_address,
+				search_length);
+
+	if (io_base) {
+		printk(BIOS_DEBUG, "Realtek NIC io_base = 0x%04x\n", io_base);
+		printk(BIOS_DEBUG, "Programming MAC Address\n");
+
+		/* Disable register protection */
+		outb(0xc0, io_base + 0x50);
+		outl(high_dword, io_base);
+		outl(low_dword, io_base + 0x04);
+		outb(0x60, io_base + 54);
+		/* Enable register protection again */
+		outb(0x00, io_base + 0x50);
+	}
+}
+
+void lan_init(void)
+{
+	u16 io_base = 0;
+	struct device *ethernet_dev = NULL;
+
+	/* Get NIC's IO base address */
+	ethernet_dev = dev_find_device(BUDDY_NIC_VENDOR_ID,
+				       BUDDY_NIC_DEVICE_ID, 0);
+	if (ethernet_dev != NULL) {
+		io_base = pci_read_config16(ethernet_dev, 0x10) & 0xfffe;
+
+		/*
+		 * Battery life time - LAN PCIe should enter ASPM L1 to save
+		 * power when LAN connection is idle.
+		 * enable CLKREQ: LAN pci config space 0x81h=01
+		 */
+		pci_write_config8(ethernet_dev, 0x81, 0x01);
+	}
+
+	if (io_base) {
+		/* Program MAC address based on VPD data */
+		program_mac_address(io_base);
+
+		/*
+		 * Program NIC LEDS
+		 *
+		 * RTL8105E Series EEPROM-Less Application Note,
+		 * Section 5.6 LED Mode Configuration
+		 *
+		 * Step1: Write C0h to I/O register 0x50 via byte access to
+		 *        disable 'register protection'
+		 * Step2: Write xx001111b to I/O register 0x52 via byte access
+		 *        (bit7 is LEDS1 and bit6 is LEDS0)
+		 * Step3: Write 0x00 to I/O register 0x50 via byte access to
+		 *        enable 'register protection'
+		 */
+		outb(0xc0, io_base + 0x50);	/* Disable protection */
+		outb((BUDDY_NIC_LED_MODE << 6) | 0x0f, io_base + 0x52);
+		outb(0x00, io_base + 0x50);	/* Enable register protection */
+	}
+}