mb/prodrive/hermes: Add new mainboard port

This patch adds support for the Prodrive Hermes mainboard.

Tested with CoffeeLakeFspBinPkg FSP 7.0.68.41.

Untested:
* CNVi
* Intel Graphics

Tested:
* CPU Intel Xeon E2288G
* CPU Intel Core i3-9100F
* CPU Intel Core i7 9700KF
* CPU Intel Core i7 9700E
* CPU Intel Core i7 9700F
* CPU Intel Core i5 9600K
* CPU Intel Pentium Gold G5400
* PCIe Link Width x8 on Slot6 by changing PCIe mux
* All four DDR4 slots in different configurations
* USB2.0 HDR1
* USB2.0 HDR2
* USB3.0 HDR
* Slot1
* Slot2
* Slot3
* Slot4
* Slot6
* M2.M NVMEe
* Ethernet PHYs 0-4
* Aspeed BMC PCIe
* Aspeed BMC USB
* Aspeed Graphics init
* USB3 backplane all working
* I801 SMBUS

Not Working:
* Intel HDA

Change-Id: Id7d051d3fa6823618691d5572087c9ae589c2862
Signed-off-by: Christian Walter <christian.walter@9elements.com>
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Signed-off-by: Christian Walter <christian.walter@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38303
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>

25 files changed, 1360 insertions, 0 deletions

diff --git a/Documentation/mainboard/index.md b/Documentation/mainboard/index.md
index 584deb42ee..a31148c40c 100644
--- a/Documentation/mainboard/index.md
+++ b/Documentation/mainboard/index.md
@@ -130,6 +130,10 @@ The boards in this section are not real mainboards, but emulators.
 
 - [PQ7-M107](portwell/pq7-m107.md)
 
+## Prodrive
+
+- [Hermes](prodrive/hermes.md)
+
 ## Protectli
 
 - [FW2B / FW4B](protectli/fw2b_fw4b.md)
diff --git a/Documentation/mainboard/prodrive/hermes.md b/Documentation/mainboard/prodrive/hermes.md
new file mode 100644
index 0000000000..6a12c3ab66
--- /dev/null
+++ b/Documentation/mainboard/prodrive/hermes.md
@@ -0,0 +1,54 @@
+# Hermes
+
+Hermes is a regular ATX board designed for workstation PCs.
+
+The board features:
+* 5 PCIe 16x Gen3 slots
+* 4 ECC capable DDR4 DIMMs
+* 5 dedicated Ethernet ports
+* 1 BMC Ethernet port
+* VGA
+* COM port
+* 2 COM port headers
+* 4 SATA ports,
+* NVMe M2 slot
+* CNVi M2 slot
+* 3 optional DisplayPort outputs
+* optional TPM2
+
+## Required proprietary blobs
+
+- [Intel FSP2.0]
+- Intel SPS
+
+## Flashing coreboot
+
+* The BIOS flash can be updated over the BMC, but the update file has a proprietary format
+* For development a dediprog compatible pinheader is present which allows to use an EM100
+
+## Known issues
+
+- MRC caching does not work on cold boot with Intel SPS (see [Intel FSP2.0])
+
+## Technology
+
+```eval_rst
++------------------+--------------------------------------------------+
+| CPU              | CoffeeLake + CoffeeLake R (Core + Xeon)          |
++------------------+--------------------------------------------------+
+| PCH              | Intel C246                                       |
++------------------+--------------------------------------------------+
+| Coprocessor      | Intel SPS (server version of the ME)             |
++------------------+--------------------------------------------------+
+| Super I/O        | none                                             |
++------------------+--------------------------------------------------+
+| BMC              | Aspeed AST2500                                   |
++------------------+--------------------------------------------------+
+```
+
+## Extra links
+
+[flashrom]: https://flashrom.org/Flashrom
+[flashing tutorial]: ../../../../flash_tutorial/ext_power.md
+[Intel FSP2.0]: ../../../../soc/intel/fsp/index.md
+[AST2500]: https://www.aspeedtech.com/products.php?fPath=20&rId=440
diff --git a/src/mainboard/prodrive/Kconfig b/src/mainboard/prodrive/Kconfig
new file mode 100644
index 0000000000..08474254f8
--- /dev/null
+++ b/src/mainboard/prodrive/Kconfig
@@ -0,0 +1,16 @@
+if VENDOR_PRODRIVE
+
+choice
+	prompt "Mainboard model"
+
+source "src/mainboard/prodrive/*/Kconfig.name"
+
+endchoice
+
+source "src/mainboard/prodrive/*/Kconfig"
+
+config MAINBOARD_VENDOR
+	string
+	default "Prodrive"
+
+endif # VENDOR_PRODRIVE
diff --git a/src/mainboard/prodrive/Kconfig.name b/src/mainboard/prodrive/Kconfig.name
new file mode 100644
index 0000000000..b516ef16dd
--- /dev/null
+++ b/src/mainboard/prodrive/Kconfig.name
@@ -0,0 +1,2 @@
+config VENDOR_PRODRIVE
+	bool "Prodrive"
diff --git a/src/mainboard/prodrive/hermes/Kconfig b/src/mainboard/prodrive/hermes/Kconfig
new file mode 100644
index 0000000000..83178df5ae
--- /dev/null
+++ b/src/mainboard/prodrive/hermes/Kconfig
@@ -0,0 +1,64 @@
+config BOARD_PRODRIVE_HERMES_BASEBOARD
+	def_bool n
+	select SOC_INTEL_COFFEELAKE
+	select BOARD_ROMSIZE_KB_32768
+	select GENERIC_SPD_BIN
+	select HAVE_ACPI_TABLES
+	select SOC_INTEL_CANNONLAKE_PCH_H
+	select SUPERIO_ASPEED_COMMON_PRE_RAM
+	select SUPERIO_ASPEED_AST2400
+	select DRIVERS_ASPEED_AST_COMMON
+	select DRIVERS_ASPEED_AST2050
+	select SOC_INTEL_COMMON_BLOCK_GPIO_LEGACY_MACROS
+	select INTEL_LPSS_UART_FOR_CONSOLE
+	select MAINBOARD_HAS_TPM2
+	select MAINBOARD_HAS_LPC_TPM
+	select INTEL_GMA_HAVE_VBT
+	select SOC_INTEL_COMMON_BLOCK_HDA_VERB
+	select AZALIA_PLUGIN_SUPPORT
+	select ONBOARD_VGA_IS_PRIMARY
+	select DISABLE_ACPI_HIBERNATE
+
+if BOARD_PRODRIVE_HERMES_BASEBOARD
+
+config MAINBOARD_FAMILY
+	string
+	default "PRODRIVE_HERMES_SERIES"
+
+config MAINBOARD_PART_NUMBER
+	string
+	default "Hermes CFL"
+
+config MAINBOARD_DIR
+	string
+	default "prodrive/hermes"
+
+config VARIANT_DIR
+	string
+	default "baseboard"	if BOARD_PRODRIVE_HERMES_BASEBOARD
+
+config MAX_CPUS
+	int
+	default 16
+
+config OVERRIDE_DEVICETREE
+	string
+	default "variants/$(CONFIG_VARIANT_DIR)/overridetree.cb"
+
+config DIMM_SPD_SIZE
+	int
+	default 512
+
+config CONSOLE_POST
+	bool
+	default y
+
+config POST_IO
+	bool
+	default n
+
+config CBFS_SIZE
+	hex
+	default 0x900000
+
+endif # BOARD_PRODRIVE_HERMES_BASEBOARD
diff --git a/src/mainboard/prodrive/hermes/Kconfig.name b/src/mainboard/prodrive/hermes/Kconfig.name
new file mode 100644
index 0000000000..10dd9baf43
--- /dev/null
+++ b/src/mainboard/prodrive/hermes/Kconfig.name
@@ -0,0 +1,3 @@
+config BOARD_PRODRIVE_HERMES
+	bool "Hermes"
+	select BOARD_PRODRIVE_HERMES_BASEBOARD
diff --git a/src/mainboard/prodrive/hermes/Makefile.inc b/src/mainboard/prodrive/hermes/Makefile.inc
new file mode 100644
index 0000000000..2dba6dac76
--- /dev/null
+++ b/src/mainboard/prodrive/hermes/Makefile.inc
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+subdirs-y += variants/$(VARIANT_DIR)
+CPPFLAGS_common += -I$(src)/mainboard/prodrive/hermes/variants/$(VARIANT_DIR)/include
+
+bootblock-y += bootblock.c
+romstage-y += memory.c
+romstage-y += eeprom.c
+
+ramstage-y += ramstage.c
+ramstage-y += mainboard.c
+ramstage-y += eeprom.c
diff --git a/src/mainboard/prodrive/hermes/board_info.txt b/src/mainboard/prodrive/hermes/board_info.txt
new file mode 100644
index 0000000000..72bcfa956f
--- /dev/null
+++ b/src/mainboard/prodrive/hermes/board_info.txt
@@ -0,0 +1,7 @@
+Category: server
+Vendor name: Prodrive
+ROM package: SOIC-8
+ROM protocol: SPI
+ROM socketed: n
+Flashrom support: y
+Release year: 2020
diff --git a/src/mainboard/prodrive/hermes/bootblock.c b/src/mainboard/prodrive/hermes/bootblock.c
new file mode 100644
index 0000000000..1426a552d4
--- /dev/null
+++ b/src/mainboard/prodrive/hermes/bootblock.c
@@ -0,0 +1,33 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <bootblock_common.h>
+#include <console/console.h>
+#include <soc/gpio.h>
+#include <variant/gpio.h>
+#include "gpio.h"
+
+static void early_config_gpio(void)
+{
+	/* This is a hack for FSP because it does things in MemoryInit()
+	 * which it shouldn't do. We have to prepare certain gpios here
+	 * because of the brokenness in FSP. */
+	size_t num = 0;
+	const struct pad_config *early_gpio_table = get_early_gpio_table(&num);
+
+	gpio_configure_pads(early_gpio_table, num);
+}
+
+void bootblock_mainboard_early_init(void)
+{
+	early_config_gpio();
+}
+
+void bootblock_mainboard_init(void)
+{
+	u8 bmc_hsi = (gpio_get(GPP_K13) << 3) |
+		(gpio_get(GPP_K12) << 2) |
+		(gpio_get(GPP_K14) << 1) |
+		(gpio_get(GPP_K16) << 0);
+
+	printk(BIOS_INFO, "BMC HSI 0x%x\n", bmc_hsi);
+}
diff --git a/src/mainboard/prodrive/hermes/devicetree.cb b/src/mainboard/prodrive/hermes/devicetree.cb
new file mode 100644
index 0000000000..45bd4221ed
--- /dev/null
+++ b/src/mainboard/prodrive/hermes/devicetree.cb
@@ -0,0 +1,48 @@
+chip soc/intel/cannonlake
+	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 01.0 on # PEG x8             / Slot 2
+			smbios_slot_desc "SlotTypePciExpressGen3X16" "SlotLengthOther" "SLOT2" "SlotDataBusWidth8X"
+		end
+		device pci 01.1 on # PEG x4 or x8       / Slot 6
+			smbios_slot_desc "SlotTypePciExpressGen3X16" "SlotLengthOther" "SLOT6" "SlotDataBusWidth4X"
+		end
+		device pci 01.2 on # PEG x4 or disabled / Slot 4
+			smbios_slot_desc "SlotTypePciExpressGen3X16" "SlotLengthOther" "SLOT4" "SlotDataBusWidth4X"
+		end
+		device pci 04.0 on  end # SA Thermal device
+		device pci 04.0 on  end # Intel Xeon E3
+		device pci 08.0 on  end # Gaussian Mixture
+		device pci 12.0 on  end # Thermal Subsystem
+		device pci 14.0 on  end # USB xHCI
+		device pci 14.1 on  end # USB xDCI (OTG)
+		device pci 14.2 on  end # RAM controller
+		device pci 14.5 off end # SDCard
+
+		device pci 16.0 on  end # Management Engine Interface
+		device pci 16.1 on  end # Management Engine Interface
+		device pci 16.4 on  end # Management Engine Interface
+		device pci 17.0 on  end # SATA
+		device pci 1d.6 on
+			device pci 00.0 on      # Aspeed PCI Bridge
+				device pci 00.0 on end  # Aspeed 2500 VGA
+			end
+		end # PCIe
+		device pci 1f.0 on 	# LPC Interface
+			chip drivers/pc80/tpm
+				device pnp 0c31.0 on end
+			end
+			# AST2500, but not enabled to decode LPC cycles
+		end
+		device pci 1f.3 on  end
+		device pci 1f.4 on  end # SMBus
+		device pci 1f.5 on  end # PCH SPI
+	end
+
+end
diff --git a/src/mainboard/prodrive/hermes/dsdt.asl b/src/mainboard/prodrive/hermes/dsdt.asl
new file mode 100644
index 0000000000..4d8d1709e8
--- /dev/null
+++ b/src/mainboard/prodrive/hermes/dsdt.asl
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <acpi/acpi.h>
+DefinitionBlock(
+	"dsdt.aml",
+	"DSDT",
+	0x02,		// DSDT revision: ACPI v2.0 and up
+	OEM_ID,
+	ACPI_TABLE_CREATOR,
+	0x20110725	// OEM revision
+)
+{
+	#include <soc/intel/cannonlake/acpi/platform.asl>
+
+	// global NVS and variables
+	#include <soc/intel/common/block/acpi/acpi/globalnvs.asl>
+
+	Scope (\_SB) {
+		Device (PCI0) {
+		#include <soc/intel/common/block/acpi/acpi/northbridge.asl>
+		#include <soc/intel/cannonlake/acpi/southbridge.asl>
+		}
+	}
+
+	#include <southbridge/intel/common/acpi/sleepstates.asl>
+
+}
diff --git a/src/mainboard/prodrive/hermes/eeprom.c b/src/mainboard/prodrive/hermes/eeprom.c
new file mode 100644
index 0000000000..bd5db5c851
--- /dev/null
+++ b/src/mainboard/prodrive/hermes/eeprom.c
@@ -0,0 +1,67 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <device/pci_ops.h>
+#include <console/console.h>
+#include <device/smbus_host.h>
+#include "variants/baseboard/include/eeprom.h"
+
+/*
+ * Check Signature in EEPROM (M24C32-FMN6TP)
+ * If signature is there we assume that that the content is valid
+ */
+int check_signature(u8 addr)
+{
+	u8 blob[8] = {0};
+
+	if (!read_write_config(addr, blob, EEPROM_OFFSET_FSP_SIGNATURE, 0, ARRAY_SIZE(blob))) {
+		// Check Signature
+		if (*(uint64_t *)blob == FSP_UPD_SIGNATURE) {
+			printk(BIOS_DEBUG, "CFG EEPROM: Signature valid.\n");
+			return 1;
+		}
+		printk(BIOS_DEBUG, "CFG EEPROM: Signature invalid - skipping option write.\n");
+		return 0;
+	}
+	return 0;
+}
+
+// Read data from offset and write it to offset in UPD
+bool read_write_config(u8 addr, void *blob, size_t read_offset, size_t write_offset,
+		size_t size)
+{
+	int ret = 0;
+
+#if ENV_ROMSTAGE
+	pci_devfn_t dev = PCI_DEV(0, PCH_DEV_SLOT_LPC, 4);
+#else
+	const struct device *dev = pcidev_on_root(PCH_DEV_SLOT_LPC, 4);
+#endif
+
+	u32 smb_ctrl_reg = pci_read_config32(dev, HOSTC);
+	pci_write_config32(dev, HOSTC, smb_ctrl_reg | HOSTC_I2C_EN);
+
+	printk(BIOS_SPEW, "%s\tOffset: %04zx\tSize: %02zx\n", __func__,
+		read_offset, size);
+
+	/* We can always read two bytes at a time */
+	for (size_t i = 0; i < size; i = i + 2) {
+		u8 tmp[2] = {0};
+
+		ret = do_smbus_process_call(SMBUS_IO_BASE, addr, 0,
+			swab16(read_offset + i), (uint16_t *)&tmp[0]);
+		if (ret < 0)
+			break;
+
+		// Write to UPD
+		uint8_t *writePointer = (uint8_t *)blob + write_offset + i;
+		if (size > 1 && (size % 2 == 0))
+			memcpy(writePointer, tmp, 2);
+		else
+			*writePointer = tmp[0];
+	}
+
+	/* Restore I2C_EN bit */
+	pci_write_config32(dev, HOSTC, smb_ctrl_reg);
+
+	return ret;
+}
diff --git a/src/mainboard/prodrive/hermes/hda_verb.c b/src/mainboard/prodrive/hermes/hda_verb.c
new file mode 100644
index 0000000000..59b8aa603c
--- /dev/null
+++ b/src/mainboard/prodrive/hermes/hda_verb.c
@@ -0,0 +1,170 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <device/azalia_device.h>
+
+const u32 cim_verb_data[] = {
+	0x10ec0888,	/* Codec Vendor / Device ID: Realtek ALC888 */
+	0x10ec0888,	/* Subsystem ID */
+	10,		/* Number of 4 dword sets */
+	AZALIA_SUBVENDOR(0, 0x10ec0888),
+
+	/* Port A: Front, Audio Header #1 */
+	AZALIA_PIN_CFG(0, 0x14, AZALIA_PIN_DESC(
+		INTEGRATED,
+		INTERNAL,
+		SPECIAL7,
+		LINE_OUT,
+		OTHER_ANALOG,
+		COLOR_UNKNOWN,
+		false,
+		0xf,
+		0
+	)),
+	/* Port B: Mic1, Line input (pink)  */
+	AZALIA_PIN_CFG(0, 0x15, AZALIA_PIN_DESC(
+		JACK,
+		EXTERNAL_PRIMARY_CHASSIS,
+		REAR, //FIXME
+		LINE_IN,
+		STEREO_MONO_1_8,
+		PINK,
+		false,
+		0xf,
+		0
+	)),
+	/* Port C: Line, Speaker (only L) */
+	AZALIA_PIN_CFG(0, 0x16, AZALIA_PIN_DESC(
+		INTEGRATED,
+		INTERNAL,
+		NA,
+		SPEAKER,
+		TYPE_UNKNOWN,
+		COLOR_UNKNOWN,
+		false,
+		0xf,
+		0
+	)),
+	/* Port D: Sidesurr, Line out (green) */
+	AZALIA_PIN_CFG(0, 0x17, AZALIA_PIN_DESC(
+		//JACK,
+		LINE_OUT,
+		EXTERNAL_PRIMARY_CHASSIS,
+		REAR, //FIXME
+		LINE_OUT,
+		STEREO_MONO_1_8,
+		GREEN,
+		false,
+		0xf,
+		0
+	)),
+	/* Port E: Line2, Line input (blue) */
+	AZALIA_PIN_CFG(0, 0x18, AZALIA_PIN_DESC(
+		JACK,
+		EXTERNAL_PRIMARY_CHASSIS,
+		REAR, //FIXME
+		LINE_IN,
+		STEREO_MONO_1_8,
+		BLUE,
+		false,
+		0xf,
+		0
+	)),
+	/* Port F: Mic2, Audio Header #2 */
+	AZALIA_PIN_CFG(0, 0x19, AZALIA_PIN_DESC(
+		INTEGRATED,
+		INTERNAL,
+		SPECIAL7,
+		LINE_IN,
+		OTHER_ANALOG,
+		COLOR_UNKNOWN,
+		false,
+		0xf,
+		0
+	)),
+	/* Port G: Not connected */
+	AZALIA_PIN_CFG(0, 0x1a, AZALIA_PIN_DESC(
+		NC,
+		LOCATION_OTHER,
+		NA,
+		DEVICE_OTHER,
+		TYPE_OTHER,
+		COLOR_OTHER,
+		true,
+		0,
+		0
+	)),
+	/* Port H: Not connected */
+	AZALIA_PIN_CFG(0, 0x1b, AZALIA_PIN_DESC(
+		NC,
+		LOCATION_OTHER,
+		NA,
+		DEVICE_OTHER,
+		TYPE_OTHER,
+		COLOR_OTHER,
+		true,
+		0,
+		0
+	)),
+
+	/* S/PDIF-OUT */
+	AZALIA_PIN_CFG(0, 0x1e, AZALIA_PIN_DESC(
+		INTEGRATED,
+		INTERNAL,
+		NA,
+		SPDIF_OUT,
+		OTHER_DIGITAL,
+		COLOR_UNKNOWN,
+		true,
+		0xf,
+		0
+	)),
+	/* S/PDIF-IN */
+	AZALIA_PIN_CFG(0, 0x1f, AZALIA_PIN_DESC(
+		INTEGRATED,
+		INTERNAL,
+		NA,
+		SPDIF_IN,
+		OTHER_DIGITAL,
+		COLOR_UNKNOWN,
+		true,
+		0xf,
+		0
+	)),
+
+	//FIXME COdec ID
+	/*
+	 * VerbTable: CFL Display Audio Codec
+	 * Revision ID = 0xFF
+	 * Codec Vendor: 0x8086280B
+	 */
+
+	0x8086280B,
+	0xFFFFFFFF,
+	5,	/* Number of 4 dword sets */
+
+	/*
+	 * Display Audio Verb Table
+	 * For GEN9, the Vendor Node ID is 08h
+	 * Port to be exposed to the inbox driver in the vanilla mode
+	 * PORT C - BIT[7:6] = 01b
+	 */
+	0x00878140,
+	0x00878140,
+	0x00878140,
+	0x00878140,
+	/* Pin Widget 5 - PORT B - Configuration Default: 0x18560010 */
+	AZALIA_PIN_CFG(2, 0x05, 0x18560010),
+	/* Pin Widget 6 - PORT C - Configuration Default: 0x18560020 */
+	AZALIA_PIN_CFG(2, 0x06, 0x18560020),
+	/* Pin Widget 7 - PORT D - Configuration Default: 0x18560030 */
+	AZALIA_PIN_CFG(2, 0x07, 0x18560030),
+	/* Disable the third converter and third Pin (NID 08h) */
+	0x00878140,
+	0x00878140,
+	0x00878140,
+	0x00878140,
+};
+
+const u32 pc_beep_verbs[0] = {};
+
+AZALIA_ARRAY_SIZES;
diff --git a/src/mainboard/prodrive/hermes/mainboard.c b/src/mainboard/prodrive/hermes/mainboard.c
new file mode 100644
index 0000000000..b24dd566f9
--- /dev/null
+++ b/src/mainboard/prodrive/hermes/mainboard.c
@@ -0,0 +1,89 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <device/device.h>
+#include "gpio.h"
+
+/* FIXME: Example code below */
+
+static void mb_configure_dp1_pwr(bool enable)
+{
+	gpio_output(GPP_K3, enable);
+}
+
+static void mb_configure_dp2_pwr(bool enable)
+{
+	gpio_output(GPP_K4, enable);
+}
+
+static void mb_configure_dp3_pwr(bool enable)
+{
+	gpio_output(GPP_K5, enable);
+}
+
+static void mb_pcie_reset_pch_slots(bool enable)
+{
+	gpio_output(GPP_K0, enable);
+}
+
+static void mb_pcie_reset_cpu_slots(bool enable)
+{
+	gpio_output(GPP_K1, enable);
+}
+
+static void mb_pcie_reset_cnvi_slot(bool enable)
+{
+	gpio_output(GPP_K2, enable);
+}
+
+static void mb_hda_amp_enable(bool enable)
+{
+	gpio_output(GPP_C19, enable);
+}
+
+static void mb_usb31_rp1_pwr_enable(bool enable)
+{
+	gpio_output(GPP_G0, enable);
+}
+
+static void mb_usb31_rp2_pwr_enable(bool enable)
+{
+	gpio_output(GPP_G1, enable);
+}
+
+static void mb_usb31_fp_pwr_enable(bool enable)
+{
+	gpio_output(GPP_G2, enable);
+}
+
+static void mb_usb2_fp1_pwr_enable(bool enable)
+{
+	gpio_output(GPP_G3, enable);
+}
+
+static void mb_usb2_fp2_pwr_enable(bool enable)
+{
+	gpio_output(GPP_G4, enable);
+}
+
+static void mainboard_enable(struct device *dev)
+{
+	/* FIXME: Do runtime configuration once the board is production ready */
+	mb_configure_dp1_pwr(1);
+	mb_configure_dp2_pwr(1);
+	mb_configure_dp3_pwr(1);
+	if (0) {
+		mb_pcie_reset_pch_slots(1);
+		mb_pcie_reset_cpu_slots(0);
+		mb_pcie_reset_cnvi_slot(0);
+	}
+	mb_hda_amp_enable(1);
+	mb_usb31_rp1_pwr_enable(1);
+	mb_usb31_rp2_pwr_enable(1);
+	mb_usb31_fp_pwr_enable(1);
+	mb_usb2_fp1_pwr_enable(1);
+	mb_usb2_fp2_pwr_enable(1);
+}
+
+struct chip_operations mainboard_ops = {
+	.enable_dev = mainboard_enable,
+};
diff --git a/src/mainboard/prodrive/hermes/memory.c b/src/mainboard/prodrive/hermes/memory.c
new file mode 100644
index 0000000000..0ff21c4754
--- /dev/null
+++ b/src/mainboard/prodrive/hermes/memory.c
@@ -0,0 +1,44 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <variant/variants.h>
+#include <soc/cnl_memcfg_init.h>
+
+static const struct cnl_mb_cfg baseboard_memcfg_cfg = {
+	/* Access memory info through SMBUS. */
+	.spd[0] = {
+		.read_type = READ_SMBUS,
+		.spd_spec = {.spd_smbus_address = 0xA0}
+	},
+	.spd[1] = {
+		.read_type = READ_SMBUS,
+		.spd_spec = {.spd_smbus_address = 0xA2}
+	},
+	.spd[2] = {
+		.read_type = READ_SMBUS,
+		.spd_spec = {.spd_smbus_address = 0xA4}
+	},
+	.spd[3] = {
+		.read_type = READ_SMBUS,
+		.spd_spec = {.spd_smbus_address = 0xA6}
+	},
+
+	/* Baseboard uses 121, 81 and 100 rcomp resistors */
+	.rcomp_resistor = {121, 81, 100},
+
+	/* Baseboard Rcomp target values. */
+	.rcomp_targets = {100, 40, 20, 20, 26},
+
+	/* Baseboard is an interleaved design */
+	.dq_pins_interleaved = 1,
+
+	/* Baseboard is using config 2 for vref_ca */
+	.vref_ca_config = 2,
+
+	/* Disable Early Command Training */
+	.ect = 0,
+};
+
+const struct cnl_mb_cfg *variant_memcfg_config(void)
+{
+	return &baseboard_memcfg_cfg;
+}
diff --git a/src/mainboard/prodrive/hermes/ramstage.c b/src/mainboard/prodrive/hermes/ramstage.c
new file mode 100644
index 0000000000..18fc915018
--- /dev/null
+++ b/src/mainboard/prodrive/hermes/ramstage.c
@@ -0,0 +1,34 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <soc/ramstage.h>
+#include <variant/gpio.h>
+#include "variants/baseboard/include/eeprom.h"
+
+static fsp_params parmas_list[] = {
+	// FIXME: Fill with additional options
+};
+
+void mainboard_silicon_init_params(FSP_S_CONFIG *params)
+{
+	size_t num = 0;
+	const struct pad_config *gpio_table = get_gpio_table(&num);
+
+	/* Configure pads prior to SiliconInit() in case there's any
+	   dependencies during hardware initialization. */
+	gpio_configure_pads(gpio_table, num);
+
+	params->SataLedEnable = 1;
+
+	// Overwrite params
+	if (!check_signature(I2C_ADDR_EEPROM))
+		return;
+
+	for (u8 i = 0; i <= ARRAY_SIZE(parmas_list); i++) {
+		if (ARRAY_SIZE(parmas_list) == 0)
+			break;
+		read_write_config(I2C_ADDR_EEPROM, params, EEPROM_OFFSET_FSP_CONFIG +
+			parmas_list[i].offset,
+			EEPROM_OFFSET_FSP_CONFIG + parmas_list[i].offset,
+			parmas_list[i].size);
+	}
+}
diff --git a/src/mainboard/prodrive/hermes/romstage.c b/src/mainboard/prodrive/hermes/romstage.c
new file mode 100644
index 0000000000..a25c43a743
--- /dev/null
+++ b/src/mainboard/prodrive/hermes/romstage.c
@@ -0,0 +1,31 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <soc/cnl_memcfg_init.h>
+#include <soc/romstage.h>
+#include <variant/variants.h>
+#include "variants/baseboard/include/eeprom.h"
+
+static fsp_params parmas_list[] = {
+	GET_VALUE(RMT),
+	GET_VALUE(HyperThreading),
+	GET_VALUE(BootFrequency)
+};
+
+void mainboard_memory_init_params(FSPM_UPD *memupd)
+{
+	memupd->FspmConfig.UserBd = 7;
+	memupd->FspmTestConfig.SmbusSpdWriteDisable = 0;
+	memupd->FspmConfig.IedSize = 0x400000;
+	cannonlake_memcfg_init(&memupd->FspmConfig, variant_memcfg_config());
+
+	// Overwrite memupd
+	if (!check_signature(I2C_ADDR_EEPROM))
+		return;
+
+	for (size_t i = 0; i < ARRAY_SIZE(parmas_list); i++) {
+		read_write_config(I2C_ADDR_EEPROM, memupd, EEPROM_OFFSET_FSP_CONFIG +
+			parmas_list[i].offset,
+			EEPROM_OFFSET_FSP_CONFIG + parmas_list[i].offset,
+			parmas_list[i].size);
+	}
+}
diff --git a/src/mainboard/prodrive/hermes/variants/baseboard/Makefile.inc b/src/mainboard/prodrive/hermes/variants/baseboard/Makefile.inc
new file mode 100644
index 0000000000..cc5cdc1ace
--- /dev/null
+++ b/src/mainboard/prodrive/hermes/variants/baseboard/Makefile.inc
@@ -0,0 +1,4 @@
+## SPDX-License-Identifier: GPL-2.0-or-later
+
+bootblock-y += gpio.c
+ramstage-y += gpio.c
diff --git a/src/mainboard/prodrive/hermes/variants/baseboard/board_info.txt b/src/mainboard/prodrive/hermes/variants/baseboard/board_info.txt
new file mode 100644
index 0000000000..80dba9546d
--- /dev/null
+++ b/src/mainboard/prodrive/hermes/variants/baseboard/board_info.txt
@@ -0,0 +1,7 @@
+Category: server
+Vendor name: Prodrive
+Board name: Hermes
+Board URL: TBD
+ROM protocol: SPI
+ROM socketed: n
+Flashrom support: y
diff --git a/src/mainboard/prodrive/hermes/variants/baseboard/data.vbt b/src/mainboard/prodrive/hermes/variants/baseboard/data.vbt
new file mode 100644
index 0000000000..64bc4fee08
--- /dev/null
+++ b/src/mainboard/prodrive/hermes/variants/baseboard/data.vbt
diff --git a/src/mainboard/prodrive/hermes/variants/baseboard/gpio.c b/src/mainboard/prodrive/hermes/variants/baseboard/gpio.c
new file mode 100644
index 0000000000..9c01d2470d
--- /dev/null
+++ b/src/mainboard/prodrive/hermes/variants/baseboard/gpio.c
@@ -0,0 +1,402 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include "include/variant/gpio.h"
+#include <commonlib/helpers.h>
+
+/* Pad configuration in ramstage */
+static const struct pad_config gpio_table[] = {
+	/* ------- GPIO Group GPP_A ------- */
+
+	/* ISH */
+	PAD_NC(GPP_A17, NONE),
+	PAD_NC(GPP_A18, NONE),
+	PAD_NC(GPP_A19, NONE),
+	PAD_NC(GPP_A20, NONE),
+	PAD_NC(GPP_A21, NONE),
+	PAD_NC(GPP_A22, NONE),
+	PAD_NC(GPP_A23, NONE),
+
+	/* ------- GPIO Group GPP_B ------- */
+	PAD_NC(GPP_B0, NONE),
+	PAD_NC(GPP_B1, NONE),
+
+	/* GPP_B2 - M2_E_BT_UART_WAKE_n */
+	PAD_CFG_GPI_INT(GPP_B2, NONE, DEEP, OFF),
+
+	/* GPP_B3 - PCH_M2_E_BT_KILL_n   : handled at runtime */
+	/* GPP_B4 - PCH_M2_E_WLAN_KILL_n : handled at runtime */
+
+	/* SRCCLKREQ0# - SRCCLKREQ5# */
+	PAD_NC(GPP_B5, NONE),
+	PAD_NC(GPP_B6, NONE),
+	PAD_NC(GPP_B7, NONE),
+	PAD_NC(GPP_B8, NONE),
+	PAD_CFG_NF(GPP_B9, NONE, DEEP, NF1),		/* M2_M_CLK_REQ_n */
+	PAD_CFG_NF(GPP_B10, NONE, DEEP, NF1),		/* M2_E_CLK_REQ_n */
+
+	PAD_NC(GPP_B11, NONE),
+
+	/* GPP_B12 - SLP_S0_n */
+	PAD_CFG_NF(GPP_B12, NONE, DEEP, NF1),
+	/* GPP_B13 - PLTRST_n */
+	PAD_CFG_NF(GPP_B13, NONE, DEEP, NF1),
+
+	/* GPP_B14 - SPKR */
+	PAD_CFG_NF(GPP_B14, NONE, DEEP, NF1),
+
+	/* GSPI0 */
+	PAD_CFG_NF(GPP_B15, NONE, DEEP, NF1),		/* SPI0_CS */
+	PAD_CFG_NF(GPP_B16, NONE, DEEP, NF1),		/* SPI0_CLK */
+	PAD_CFG_NF(GPP_B17, NONE, DEEP, NF1),		/* SPI0_MISO */
+	PAD_CFG_NF(GPP_B18, NONE, DEEP, NF1),		/* SPI0_MOSI */
+
+	/* GSPI1 */
+	PAD_NC(GPP_B19, NONE),
+	PAD_NC(GPP_B20, NONE),
+	PAD_NC(GPP_B21, NONE),
+	PAD_NC(GPP_B22, NONE),
+
+	PAD_CFG_NF(GPP_B23, NONE, DEEP, NF1),		/* PCH_SML1_ALERT_n */
+
+	/* ------- GPIO Group GPP_C ------- */
+	/* SML0 - Used by CSME */
+	PAD_CFG_NF(GPP_C3, NONE, DEEP, NF1),		/* PCH_SML0_CLK */
+	PAD_CFG_NF(GPP_C4, NONE, DEEP, NF1),		/* PCH_SML0_DATA */
+	PAD_CFG_NF(GPP_C5, NONE, DEEP, NF1),		/* PCH_SML0_ALERT_N */
+
+	/* SML1 - Used by CSME */
+	PAD_CFG_NF(GPP_C6, NONE, DEEP, NF1),		/* PCH_SML1_CLK */
+	PAD_CFG_NF(GPP_C7, NONE, DEEP, NF1),		/* PCH_SML1_DATA */
+
+	/* UART0 */
+	PAD_CFG_NF(GPP_C8, NONE, DEEP, NF1),		/* UART0_RXD */
+	PAD_CFG_NF(GPP_C9, NONE, DEEP, NF1),		/* UART0_TXD */
+	PAD_CFG_NF(GPP_C10, NONE, DEEP, NF1),		/* UART0_RTS_N */
+	PAD_CFG_NF(GPP_C11, NONE, DEEP, NF1),		/* UART0_CTS_N */
+
+	/* UART1 */
+	PAD_CFG_NF(GPP_C12, NONE, DEEP, NF1),		/* UART1_RXD */
+	PAD_CFG_NF(GPP_C13, NONE, DEEP, NF1),		/* UART1_TXD */
+	PAD_CFG_NF(GPP_C14, NONE, DEEP, NF1),		/* UART1_RTS_N */
+	PAD_CFG_NF(GPP_C15, NONE, DEEP, NF1),		/* UART1_CTS_N */
+
+	PAD_NC(GPP_C17, NONE),
+
+	PAD_CFG_GPI_INT(GPP_C18, NONE, PLTRST, OFF),	/* AUD_FPA_PRSNT_n */
+	/* GPP_C19 - AUD_AMP_EN : configured at runtime */
+
+	/* UART2 */
+	PAD_CFG_NF(GPP_C20, NONE, DEEP, NF1),		/* UART2_RXD */
+	PAD_CFG_NF(GPP_C21, NONE, DEEP, NF1),		/* UART2_TXD */
+	PAD_CFG_NF(GPP_C22, NONE, DEEP, NF1),		/* UART2_RTS_N */
+	PAD_CFG_NF(GPP_C23, NONE, DEEP, NF1),		/* UART2_CTS_N */
+
+	/* ------- GPIO Group GPP_D ------- */
+	/* SPI1 */
+	PAD_NC(GPP_D0, NONE),
+	PAD_NC(GPP_D1, NONE),
+	PAD_NC(GPP_D2, NONE),
+	PAD_NC(GPP_D3, NONE),
+
+	PAD_NC(GPP_D4, NONE),
+
+	/* I2S2 */
+	PAD_CFG_NF(GPP_D5, NONE, DEEP, NF1),		/* M2_E_BT_PCMFRM_CRF_RST_n */
+	PAD_CFG_NF(GPP_D6, NONE, DEEP, NF1),		/* M2_E_BT_PCMOUT_CLKREQ0 */
+	PAD_CFG_NF(GPP_D7, NONE, DEEP, NF1),		/* M2_E_BT_PCMIN */
+	PAD_CFG_NF(GPP_D8, NONE, DEEP, NF1),		/* M2_E_BT_PCMCLK */
+
+	/* ISH SPI */
+	PAD_NC(GPP_D9, NONE),
+	PAD_NC(GPP_D10, NONE),
+	PAD_NC(GPP_D11, NONE),
+	PAD_NC(GPP_D12, NONE),
+
+	/* ISH UART */
+	PAD_NC(GPP_D13, NONE),
+	PAD_NC(GPP_D14, NONE),
+	PAD_NC(GPP_D15, NONE),
+	PAD_NC(GPP_D16, NONE),
+
+	/* DMIC */
+	PAD_NC(GPP_D17, NONE),
+	PAD_NC(GPP_D18, NONE),
+	PAD_NC(GPP_D19, NONE),
+	PAD_NC(GPP_D20, NONE),
+
+	PAD_NC(GPP_D21, NONE),
+	PAD_NC(GPP_D22, NONE),
+	PAD_NC(GPP_D23, NONE),
+
+	/* ------- GPIO Group GPP_G ------- */
+	/* GPP_G0 - USB31_RP1_PWR_EN : configured at runtime */
+	/* GPP_G1 - USB31_RP2_PWR_EN : configured at runtime */
+	/* GPP_G2 - USB31_FP_PWR_EN  : configured at runtime */
+	/* GPP_G3 - USB2_FP1_PWR_EN  : configured at runtime */
+	/* GPP_G4 - USB2_FP2_PWR_EN  : configured at runtime */
+
+	PAD_NC(GPP_G5, NONE),
+	PAD_NC(GPP_G6, NONE),
+	PAD_NC(GPP_G7, NONE),
+
+	/* ------- GPIO Group GPD ------- */
+	/* GPD0 - BATLOW */
+	PAD_CFG_NF(GPD0, NONE, DEEP, NF1),
+	/* GPD1 - ACPRESENT */
+	PAD_CFG_NF(GPD1, NONE, DEEP, NF1),
+	/* GPD2 - LAN_WAKE# */
+	PAD_CFG_NF(GPD2, NONE, DEEP, NF1),
+	/* GPD3 - PRWBTN# */
+	PAD_CFG_NF(GPD3, NONE, DEEP, NF1),
+	/* GPD4 - SLP_S3# */
+	PAD_CFG_NF(GPD4, NONE, DEEP, NF1),
+	/* GPD5 - SLP_S4# */
+	PAD_CFG_NF(GPD5, NONE, DEEP, NF1),
+	/* GPD6 - SLP_A# */
+	PAD_CFG_NF(GPD6, NONE, DEEP, NF1),
+	/* GPD7 - GPIO */
+	PAD_NC(GPD7, NONE),
+	/* GPD8 - SUSCLK */
+	PAD_CFG_NF(GPD8, NONE, DEEP, NF1),
+	/* GPD9 - SLP_WLAN */
+	PAD_CFG_NF(GPD9, NONE, DEEP, NF1),
+	/* GPD10 - SLP_S5# */
+	PAD_CFG_NF(GPD10, NONE, DEEP, NF1),
+	/* GPD11 - LAN_DISABLE_n */
+	PAD_CFG_NF(GPD11, NONE, DEEP, NF1),
+
+	/* ------- GPIO Group GPP_K ------- */
+	/* GPP_K0 - PERST_PCH_SLOTS_n   : configured at runtime */
+	/* GPP_K1 - PERST_CPU_SLOTS_n   : configured at runtime */
+	/* GPP_K2 - PERST_CNVI_SLOTS_n  : configured at runtime */
+	/* GPP_K3 - DP1_PWR_EN          : configured at runtime */
+	/* GPP_K4 - DP2_PWR_EN          : configured at runtime */
+	/* GPP_K5 - DP3_PWR_EN          : configured at runtime */
+
+	PAD_NC(GPP_K6, NONE),
+
+	/* GPP_K7 - EN_3V3_KEYM_PCH     : configured at runtime  */
+
+	PAD_NC(GPP_K8, NONE),
+	PAD_NC(GPP_K9, NONE),
+	PAD_NC(GPP_K10, NONE),
+	PAD_NC(GPP_K11, NONE),
+
+	/* K12 - K16 in early GPIO config */
+
+	PAD_NC(GPP_K17, NONE),
+
+	/* GPP_K18/!NMI - NC */
+	PAD_NC(GPP_K18, NONE),
+	/* GPP_K19/!SMI - NC */
+	PAD_NC(GPP_K19, NONE),
+
+	/* GPP_K20 - CPU_CATERR_PCH_n */
+	PAD_CFG_GPI(GPP_K20, NONE, DEEP),
+	/* GPP_K21 - TPM_INT_n */
+	PAD_CFG_GPI_INT(GPP_K21, NONE, DEEP, OFF), // Trigger?
+	/* GPP_K22 - NC */
+	PAD_NC(GPP_K22, NONE),
+	/* GPP_K23 - NC */
+	PAD_NC(GPP_K23, NONE),
+
+	/* ------- GPIO Group GPP_H ------- */
+
+	/* SRCCLKREQ6# - SRCCLKREQ10# not used as CLKREQ, external 10K pullup */
+	PAD_CFG_GPI(GPP_H0, NONE, DEEP),		/* PCIE_SLOT1_PRSNT_PCH_n */
+	PAD_CFG_GPI(GPP_H1, NONE, DEEP),		/* PCIE_SLOT2_PRSNT_PCH_n */
+	PAD_CFG_GPI(GPP_H2, NONE, DEEP),		/* PCIE_SLOT3_PRSNT_PCH_n */
+	PAD_CFG_GPI(GPP_H3, NONE, DEEP),		/* PCIE_SLOT4_PRSNT_PCH_n */
+	PAD_CFG_GPI(GPP_H4, NONE, DEEP),		/* PCIE_SLOT6_PRSNT_PCH_n */
+
+	PAD_CFG_GPI(GPP_H4, NONE, DEEP),		/* PCIE_SLOT6_PRSNT_PCH_n */
+
+	/* GPP_H5 - PCH_HBLED_n configured in early init */
+
+	/* SRCCLKREQ13# - SRCCLKREQ15# */
+	PAD_NC(GPP_H7, NONE),
+	PAD_NC(GPP_H8, NONE),
+	PAD_NC(GPP_H9, NONE),
+
+	/* SML2 - Used by CSME */
+	PAD_NC(GPP_H10, NONE),
+	PAD_NC(GPP_H11, NONE),
+	PAD_NC(GPP_H12, NONE),
+
+	/* SML3 - Used by CSME */
+	PAD_NC(GPP_H13, NONE),
+	PAD_NC(GPP_H14, NONE),
+	PAD_NC(GPP_H15, NONE),
+
+	/* SML4 - Used by CSME */
+	PAD_CFG_NF(GPP_H16, NONE, DEEP, NF1),		/* PCIE_SMB_CLK */
+	PAD_CFG_NF(GPP_H17, NONE, DEEP, NF1),		/* PCIE_SMB_DATA */
+	PAD_NC(GPP_H18, NONE),
+
+	/* ISH I2C0 */
+	PAD_NC(GPP_H19, NONE),
+	PAD_NC(GPP_H20, NONE),
+
+	/* ISH I2C1 */
+	PAD_NC(GPP_H21, NONE),
+	PAD_NC(GPP_H22, NONE),
+
+	PAD_NC(GPP_H23, NONE),
+
+	/* ------- GPIO Group GPP_E ------- */
+	/* GPP_E0 - NC */
+	PAD_NC(GPP_E0, NONE),
+	/* GPP_E1 - M2_SATA_PCIE_SEL */
+	PAD_CFG_NF(GPP_E1, NONE, DEEP, NF1),
+	/* GPP_E2 - NC */
+	PAD_NC(GPP_E2, NONE),
+	/* GPP_E3 - NC */
+	PAD_NC(GPP_E3, NONE),
+	/* GPP_E4 - NC */
+	PAD_NC(GPP_E4, NONE),
+
+	/* GPP_E5 - PCH_M2_SATA_DEVSLP1 */
+	PAD_CFG_NF(GPP_E5, NONE, DEEP, NF1),
+	/* GPP_E6 - NC */
+	PAD_NC(GPP_E6, NONE),
+	/* GPP_E8 - SATALED# */
+	PAD_CFG_NF(GPP_E8, NONE, DEEP, NF1),
+
+	/* GPP_E9 - USB31_RP1_OC_N */
+	PAD_CFG_NF(GPP_E9, NONE, DEEP, NF1),
+	/* GPP_E10 - USB31_RP2_OC_N */
+	PAD_CFG_NF(GPP_E10, NONE, DEEP, NF1),
+	/* GPP_E11 - USB31_FP_OC_N */
+	PAD_CFG_NF(GPP_E11, NONE, DEEP, NF1),
+	/* GPP_E12 - USB2_FP1_OC_N */
+	PAD_CFG_NF(GPP_E12, NONE, DEEP, NF1),
+
+	/* ------- GPIO Group GPP_F ------- */
+	/* SATAGP3-7 */
+	PAD_NC(GPP_F0, NONE),
+	PAD_NC(GPP_F1, NONE),
+	PAD_NC(GPP_F2, NONE),
+	PAD_NC(GPP_F3, NONE),
+	PAD_NC(GPP_F4, NONE),
+
+	/* SATA DEVSLP3-7 */
+	PAD_NC(GPP_F5, NONE),
+	PAD_NC(GPP_F6, NONE),
+	PAD_NC(GPP_F7, NONE),
+	PAD_NC(GPP_F8, NONE),
+	PAD_NC(GPP_F9, NONE),
+
+	/* SGPIO has external 2K pullups */
+	/* GPP_F10 - SATA_SCLOCK */
+	PAD_CFG_NF(GPP_F10, NONE, DEEP, NF1),
+	/* GPP_F11 - SATA_SLOAD */
+	PAD_CFG_NF(GPP_F11, NONE, DEEP, NF1),
+	/* GPP_F12 - SATA_SDATAOUT1 */
+	PAD_CFG_NF(GPP_F12, NONE, DEEP, NF1),
+	/* GPP_F13 - SATA_BMC_SDATAOUT0 */
+	PAD_CFG_NF(GPP_F13, NONE, DEEP, NF1),
+
+	/* GPP_F14 - PS_ON_PCH_n */
+	PAD_CFG_NF(GPP_F14, NONE, DEEP, NF2),
+	/* GPP_F15 - USB2_FP2_OC_N */
+	PAD_CFG_NF(GPP_F15, NONE, DEEP, NF1),
+
+	/* GPP_F16 - NC/PU */
+	PAD_NC(GPP_F16, NONE),
+	/* GPP_F17 - GPIO */
+	PAD_NC(GPP_F17, NONE),
+	/* GPP_F18 - GPIO */
+	PAD_NC(GPP_F18, NONE),
+	/* GPP_F19 - GPIO */
+	PAD_NC(GPP_F19, NONE),
+	/* GPP_F20 - GPIO */
+	PAD_NC(GPP_F20, NONE),
+	/* GPP_F21 - GPIO */
+	PAD_NC(GPP_F21, NONE),
+	/* GPP_F22 - GPIO */
+	PAD_NC(GPP_F22, NONE),
+	/* GPP_F23 - NC */
+	PAD_NC(GPP_F23, NONE),
+	/* GPP_J0 - CNV_GNSS_PA_BLANKING */
+	PAD_CFG_NF(GPP_J0, NONE, DEEP, NF1),
+	/* GPP_J1 - NC */
+	PAD_NC(GPP_J1, NONE),
+	/* GPP_J2 - NC */
+	PAD_NC(GPP_J2, NONE),
+	/* GPP_J3 - NC */
+	PAD_NC(GPP_J3, NONE),
+
+	/* CNVi */
+	/* GPP_J4 - CNV_BRI_DT*/
+	PAD_CFG_NF(GPP_J4, NONE, DEEP, NF1),
+	/* GPP_J5 - CNV_BRI_RSP */
+	PAD_CFG_NF(GPP_J5, UP_20K, DEEP, NF1),
+	/* GPP_J6 - CNV_RGI_DT */
+	PAD_CFG_NF(GPP_J6, NONE, DEEP, NF1),
+	/* GPP_J7 - CNV_RGI_RSP */
+	PAD_CFG_NF(GPP_J7, UP_20K, DEEP, NF1),
+	/* GPP_J8 - CNV_MFUART2_RXD */
+	PAD_CFG_NF(GPP_J8, NONE, DEEP, NF1),
+	/* GPP_J9 - CNV_MFUART2_TXD */
+	PAD_CFG_NF(GPP_J9, NONE, DEEP, NF1),
+
+	PAD_NC(GPP_J10, NONE),
+	PAD_NC(GPP_J11, NONE),
+
+	/* Display Port */
+	PAD_CFG_NF(GPP_I0, NONE, DEEP, NF1),		/* DP1_HPD */
+	PAD_CFG_NF(GPP_I1, NONE, DEEP, NF1),		/* DP2_HPD */
+	PAD_CFG_NF(GPP_I2, NONE, DEEP, NF1),		/* DP3_HPD */
+	PAD_NC(GPP_I3, NONE),
+	PAD_NC(GPP_I4, NONE),
+
+	PAD_CFG_NF(GPP_I5, NONE, DEEP, NF1),		/* DP1_DDC_SCL */
+	PAD_CFG_NF(GPP_I6, NONE, DEEP, NF1),		/* DP1_DDC_SDA */
+
+	PAD_CFG_NF(GPP_I7, NONE, DEEP, NF1),		/* DP2_DDC_SCL */
+	PAD_CFG_NF(GPP_I8, NONE, DEEP, NF1),		/* DP2_DDC_SDA */
+
+	PAD_CFG_NF(GPP_I9, NONE, DEEP, NF1),		/* DP3_DDC_SCL */
+	PAD_CFG_NF(GPP_I10, NONE, DEEP, NF1),		/* DP3_DDC_SDA */
+
+	PAD_NC(GPP_I11, NONE),
+	PAD_NC(GPP_I12, NONE),
+	PAD_NC(GPP_I13, NONE),
+	PAD_NC(GPP_I14, NONE),
+
+};
+
+/* Early pad configuration in bootblock. */
+const struct pad_config early_gpio_table[] = {
+	/* Get PCIe out of reset */
+	PAD_CFG_GPO(GPP_K0, 1, DEEP),			/* PERST_PCH_SLOTS_n */
+	PAD_CFG_GPO(GPP_K1, 1, DEEP),			/* PERST_CPU_SLOTS_n */
+	PAD_CFG_GPO(GPP_K2, 1, DEEP),			/* PERST_CNVI_SLOTS_n */
+
+	/* SMB */
+	PAD_CFG_NF(GPP_C0, NONE, DEEP, NF1),		/* PCH_SMB_CLK */
+	PAD_CFG_NF(GPP_C1, NONE, DEEP, NF1),		/* PCH_SMB_DATA */
+	PAD_NC(GPP_C2, NONE),
+
+	/* BMC HSI */
+	PAD_CFG_GPI(GPP_K12, NONE, DEEP),		/* PCH_IO_2 */
+	PAD_CFG_GPI(GPP_K13, NONE, DEEP),		/* PCH_IO_3 */
+	PAD_CFG_GPI(GPP_K14, NONE, DEEP),		/* PCH_IO_1 */
+	PAD_NC(GPP_K15, NONE),
+	PAD_CFG_GPI(GPP_K16, NONE, DEEP),		/* PCH_IO_0 */
+
+	/* LED */
+	PAD_CFG_GPO(GPP_H5, 0, DEEP),			/* PCH_HBLED_n */
+};
+
+const struct pad_config *get_gpio_table(size_t *num)
+{
+	*num = ARRAY_SIZE(gpio_table);
+	return gpio_table;
+}
+
+const struct pad_config *get_early_gpio_table(size_t *num)
+{
+	*num = ARRAY_SIZE(early_gpio_table);
+	return early_gpio_table;
+}
diff --git a/src/mainboard/prodrive/hermes/variants/baseboard/include/eeprom.h b/src/mainboard/prodrive/hermes/variants/baseboard/include/eeprom.h
new file mode 100644
index 0000000000..c41ead28ab
--- /dev/null
+++ b/src/mainboard/prodrive/hermes/variants/baseboard/include/eeprom.h
@@ -0,0 +1,33 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <soc/ramstage.h>
+
+#define HOSTC 0x40
+#define SMBUS_IO_BASE	0xefa0
+#define HOSTC_I2C_EN (1 << 2)
+#define I2C_ADDR_EEPROM 0x57
+
+#if ENV_ROMSTAGE
+#define FSP_UPD_SIGNATURE FSPM_UPD_SIGNATURE
+#define EEPROM_OFFSET_FSP_SIGNATURE 0
+#define EEPROM_OFFSET_FSP_CONFIG 0
+
+#define GET_VALUE(x) {.offset = sizeof(FSP_UPD_HEADER) + sizeof(FSPM_ARCH_UPD) \
+		+ offsetof(FSP_M_CONFIG, x), .size = member_size(FSP_M_CONFIG, x)}
+#else
+
+#define FSP_UPD_SIGNATURE FSPS_UPD_SIGNATURE
+#define EEPROM_OFFSET_FSP_SIGNATURE 0x0600
+#define EEPROM_OFFSET_FSP_CONFIG (EEPROM_OFFSET_FSP_SIGNATURE + sizeof(FSP_UPD_HEADER))
+#define GET_VALUE(x) {.offset = offsetof(FSP_S_CONFIG, x), \
+					.size = member_size(FSP_S_CONFIG, x)}
+#endif // ENV_ROMSTAGE
+
+typedef struct {
+	size_t offset;
+	size_t size;
+} fsp_params;
+
+bool read_write_config(u8 addr, void *blob, size_t read_offset, size_t write_offset,
+		size_t size);
+int check_signature(u8 addr);
diff --git a/src/mainboard/prodrive/hermes/variants/baseboard/include/variant/gpio.h b/src/mainboard/prodrive/hermes/variants/baseboard/include/variant/gpio.h
new file mode 100644
index 0000000000..50d18018f0
--- /dev/null
+++ b/src/mainboard/prodrive/hermes/variants/baseboard/include/variant/gpio.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef PCH_GPIO_H
+#define PCH_GPIO_H
+
+#include <soc/gpio.h>
+#include <intelblocks/gpio_defs.h>
+
+const struct pad_config *get_gpio_table(size_t *num);
+const struct pad_config *get_early_gpio_table(size_t *num);
+
+#endif /* PCH_GPIO_H */
diff --git a/src/mainboard/prodrive/hermes/variants/baseboard/include/variant/variants.h b/src/mainboard/prodrive/hermes/variants/baseboard/include/variant/variants.h
new file mode 100644
index 0000000000..83cf232dd8
--- /dev/null
+++ b/src/mainboard/prodrive/hermes/variants/baseboard/include/variant/variants.h
@@ -0,0 +1,4 @@
+#include <soc/cnl_memcfg_init.h>
+
+/* Return memory configuration structure. */
+const struct cnl_mb_cfg *variant_memcfg_config(void);
diff --git a/src/mainboard/prodrive/hermes/variants/baseboard/overridetree.cb b/src/mainboard/prodrive/hermes/variants/baseboard/overridetree.cb
new file mode 100644
index 0000000000..33882393b5
--- /dev/null
+++ b/src/mainboard/prodrive/hermes/variants/baseboard/overridetree.cb
@@ -0,0 +1,193 @@
+chip soc/intel/cannonlake
+
+	device cpu_cluster 0 on
+		device lapic 0 on end
+	end
+
+	# FSP configuration
+
+	register "SataMode" = "0"		# AHCI
+	register "SataSalpSupport" = "0"
+	register "SataPortsDevSlp[1]" = "1"	# PCH_M2_SATA_DEVSLP1
+
+	register "SataPortsEnable[0]" = "1"
+	register "SataPortsEnable[1]" = "1"	# depends on SATAXPCIE1
+	register "SataPortsEnable[2]" = "0"	# Not used for SATA
+	register "SataPortsEnable[3]" = "0"	# Not used for SATA
+	register "SataPortsEnable[4]" = "1"
+	register "SataPortsEnable[5]" = "1"
+	register "SataPortsEnable[6]" = "1"
+	register "SataPortsEnable[7]" = "1"
+
+	register "PchHdaDspEnable" = "0"
+	register "PchHdaAudioLinkHda" = "1"
+
+	# Enumeration starts at 0 for PCIE1
+	# Ports are not hotplugable
+	register "PcieRpEnable[0]" = "1"	# Slot3 x4
+ 	# Set MaxPayload to 256 bytes
+	register "PcieRpMaxPayload[0]" = "RpMaxPayload_256"
+	# Enable Latency Tolerance Reporting Mechanism
+	register "PcieRpLtrEnable[0]" = "1"
+	# Enable Advanced Error Reporting
+	register "PcieRpAdvancedErrorReporting[0]" = "1"
+	# Disable Aspm
+	register "PcieRpAspm[0]" = "AspmDisabled"
+
+
+	register "PcieRpEnable[4]" = "1"	# PHY ETH3
+	register "PcieRpEnable[5]" = "1"	# PHY ETH4
+	register "PcieRpEnable[6]" = "1"	# PHY ETH2
+	register "PcieRpEnable[7]" = "1"	# PHY ETH1
+	register "PcieRpEnable[8]" = "1"	# M2 Slot M x4, depends on SATAXPCIE1
+	register "PcieRpEnable[13]" = "1"	# PHY ETH0
+	register "PcieRpEnable[14]" = "1"	# BMC
+	register "PcieRpEnable[15]" = "1"	# M2 Slot E x1
+	register "PcieRpEnable[20]" = "1"	# Slot 1 x4
+	# Set MaxPayload to 256 bytes
+        register "PcieRpMaxPayload[20]" = "RpMaxPayload_256"
+        # Enable Latency Tolerance Reporting Mechanism
+        register "PcieRpLtrEnable[20]" = "1"
+        # Enable Advanced Error Reporting
+        register "PcieRpAdvancedErrorReporting[20]" = "1"
+        # Disable Aspm
+        register "PcieRpAspm[20]" = "AspmDisabled"
+
+	# Controls the CLKREQ, not the output directly.
+	# Depends on the CLKREQ to CLK gen mapping below
+	register "PcieClkSrcUsage[0]" = "PCIE_CLK_FREE"		# BMC, PCIe Slot1, Slot2, Slot4, Slot6
+	register "PcieClkSrcUsage[1]" = "PCIE_CLK_FREE"		# PHY3
+	register "PcieClkSrcUsage[2]" = "PCIE_CLK_NOTUSED"
+	register "PcieClkSrcUsage[3]" = "PCIE_CLK_NOTUSED"
+	register "PcieClkSrcUsage[4]" = "PCIE_CLK_FREE"		# RP9 M2 Slot M x4
+	register "PcieClkSrcUsage[5]" = "PCIE_CLK_FREE"		# RP16 M2 Slot E x1
+	register "PcieClkSrcUsage[6]" = "PCIE_CLK_NOTUSED"
+	register "PcieClkSrcUsage[7]" = "PCIE_CLK_NOTUSED"
+	register "PcieClkSrcUsage[8]" = "PCIE_CLK_NOTUSED"
+	register "PcieClkSrcUsage[9]" = "PCIE_CLK_NOTUSED"
+	register "PcieClkSrcUsage[10]" = "PCIE_CLK_NOTUSED"
+	register "PcieClkSrcUsage[11]" = "PCIE_CLK_NOTUSED"
+	register "PcieClkSrcUsage[12]" = "PCIE_CLK_NOTUSED"
+	register "PcieClkSrcUsage[13]" = "PCIE_CLK_FREE"	# PHY 0, PHY 1, PHY 2, PHY 4
+	register "PcieClkSrcUsage[14]" = "PCIE_CLK_FREE"	# PB
+	register "PcieClkSrcUsage[15]" = "PCIE_CLK_FREE"	# PCIe Slot3
+
+	# Only map M2 CLKREQ to CLK gen
+	register "PcieClkSrcClkReq[4]" = "4"	# M2_M_CLK_REQ_n
+	register "PcieClkSrcClkReq[5]" = "5"	# M2_E_CLK_REQ_n
+
+	# USB Config 2.0/3.0
+	# Enumeration starts at 0
+	# USB 3.0
+	# USB OC0: RP1
+	register "usb3_ports[0]" = "USB3_PORT_DEFAULT(OC0)"
+	register "usb3_ports[1]" = "USB3_PORT_DEFAULT(OC0)"
+	register "usb2_ports[0]" = "USB2_PORT_TYPE_C(OC0)"
+	register "usb2_ports[1]" = "USB2_PORT_TYPE_C(OC0)"
+
+	# USB OC1: RP2
+	register "usb3_ports[2]" = "USB3_PORT_DEFAULT(OC1)"
+	register "usb3_ports[3]" = "USB3_PORT_DEFAULT(OC1)"
+	register "usb2_ports[2]" = "USB2_PORT_TYPE_C(OC1)"
+	register "usb2_ports[3]" = "USB2_PORT_TYPE_C(OC1)"
+
+	# USB OC2:  Internal Header CN_USB3_HDR
+	register "usb3_ports[4]" = "USB3_PORT_DEFAULT(OC2)"
+	register "usb3_ports[5]" = "USB3_PORT_DEFAULT(OC2)"
+	register "usb2_ports[4]" = "USB2_PORT_TYPE_C(OC2)"
+	register "usb2_ports[5]" = "USB2_PORT_TYPE_C(OC2)"
+
+	# USB 2.0
+	# USB OC3: Internal Header USB2_HDR1
+	register "usb2_ports[6]" = "USB2_PORT_MID(OC3)"
+	register "usb2_ports[7]" = "USB2_PORT_MID(OC3)"
+
+	# USB OC4: Internal Header USB2_HDR2
+	register "usb2_ports[8]" = "USB2_PORT_MID(OC4)"
+	register "usb2_ports[9]" = "USB2_PORT_MID(OC4)"
+
+	# USB OC5-7: not connected
+	# BMC
+	register "usb2_ports[10]" = "USB2_PORT_MID(OC_SKIP)"
+	# unused
+	register "usb2_ports[11]" = "USB2_PORT_EMPTY"
+	# piggy-back
+	register "usb2_ports[12]" = "USB2_PORT_MID(OC_SKIP)"
+	# M2 key E
+	register "usb2_ports[13]" = "USB2_PORT_MID(OC_SKIP)"
+
+	# Thermal
+	register "tcc_offset" = "6"     # TCC of 94C
+
+	# Enable "Intel Speed Shift Technology"
+	register "speed_shift_enable" = "1"
+
+	# HECI
+	register "HeciEnabled" = "1"
+
+	# Internal GFX
+	register "InternalGfx" = "1"
+
+	# Disable S0ix
+	register "s0ix_enable" = "0"
+
+	register "common_soc_config" = "{
+		.gspi[0] = {
+			.speed_mhz = 1,
+			.early_init = 1,
+		},
+	}"
+
+	# VR Power Delivery Design
+	register "VrPowerDeliveryDesign" = "0x12"
+
+	register "SerialIoDevMode" = "{
+		[PchSerialIoIndexI2C0]  = PchSerialIoDisabled,
+		[PchSerialIoIndexI2C1]  = PchSerialIoDisabled,
+		[PchSerialIoIndexI2C2]  = PchSerialIoDisabled,
+		[PchSerialIoIndexI2C3]  = PchSerialIoDisabled,
+		[PchSerialIoIndexI2C4]  = PchSerialIoDisabled,
+		[PchSerialIoIndexI2C5]  = PchSerialIoDisabled,
+		[PchSerialIoIndexSPI0]  = PchSerialIoPci,
+		[PchSerialIoIndexSPI1]  = PchSerialIoDisabled,
+		[PchSerialIoIndexUART0] = PchSerialIoPci,
+		[PchSerialIoIndexUART1] = PchSerialIoPci,
+		[PchSerialIoIndexUART2] = PchSerialIoPci,
+	}"
+
+	register "DisableHeciRetry" = "1"
+
+
+	device domain 0 on
+		device pci 02.0 on  end # Integrated Graphics Device
+		chip drivers/intel/wifi
+			register "wake" = "PME_B0_EN_BIT"
+			device pci 14.3 on  end # CNVi wifi
+		end
+
+		device pci 19.2 on  end # UART #2
+
+		device pci 1b.4 on
+			smbios_slot_desc "SlotTypePciExpressGen3X16" "SlotLengthOther" "SLOT1" "SlotDataBusWidth4X"
+		end # PCIe Slot 1
+		device pci 1c.0 on
+			smbios_slot_desc "SlotTypePciExpressGen3X16" "SlotLengthOther" "SLOT3" "SlotDataBusWidth4X"
+		end # PCIe Slot 3
+		device pci 1c.4 on end # PHY 3
+		device pci 1c.5 on end # PHY 4
+		device pci 1c.6 on end # PHY 2
+		device pci 1c.7 on end # PHY 1
+
+		device pci 1d.0 on
+			smbios_slot_desc "SlotTypePciExpressGen3X16" "SlotLengthOther" "M2 M" "SlotDataBusWidth4X"
+		end # M2 M
+		device pci 1d.5 on end # PHY 0
+		device pci 1d.6 on end # BMC
+
+		device pci 1e.0 on  end # UART #0
+		device pci 1e.1 on  end # UART #1
+		device pci 1e.2 off end # GSPI #0
+		device pci 1e.3 off end # GSPI #1
+
+	end
+end