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authorDavid Hendricks <dhendricks@fb.com>2018-04-24 14:37:38 -0700
committerPhilipp Deppenwiese <zaolin.daisuki@gmail.com>2018-06-26 15:17:29 +0000
commit5f187dbe6344d0e3dad4277e64efaf0f0092b559 (patch)
tree9c4dae08cf98b398f12c33051f5ccfaadc08da16 /src/mainboard/facebook
parentc1072f2fc73926bbe73b507dda2e9346d39e041f (diff)
downloadcoreboot-5f187dbe6344d0e3dad4277e64efaf0f0092b559.tar.xz
facebook/watson: Initial commit
This adds another camelbackmountain_fsp derivative, along with a .fmd file for the board. For now it's been tested to build and boot. Change-Id: I9e8804264967c19f6b51fc44575b0db36f600f88 Signed-off-by: David Hendricks <dhendricks@fb.com> Reviewed-on: https://review.coreboot.org/25884 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Diffstat (limited to 'src/mainboard/facebook')
-rw-r--r--src/mainboard/facebook/Kconfig16
-rw-r--r--src/mainboard/facebook/Kconfig.name2
-rw-r--r--src/mainboard/facebook/watson/Kconfig41
-rw-r--r--src/mainboard/facebook/watson/Kconfig.name2
-rw-r--r--src/mainboard/facebook/watson/Makefile.inc16
-rw-r--r--src/mainboard/facebook/watson/acpi/mainboard.asl20
-rw-r--r--src/mainboard/facebook/watson/acpi/platform.asl56
-rw-r--r--src/mainboard/facebook/watson/acpi_tables.c42
-rw-r--r--src/mainboard/facebook/watson/board.fmd25
-rw-r--r--src/mainboard/facebook/watson/board_info.txt4
-rw-r--r--src/mainboard/facebook/watson/cmos.layout105
-rw-r--r--src/mainboard/facebook/watson/devicetree.cb15
-rw-r--r--src/mainboard/facebook/watson/dsdt.asl44
-rw-r--r--src/mainboard/facebook/watson/fadt.c28
-rw-r--r--src/mainboard/facebook/watson/irqroute.c18
-rw-r--r--src/mainboard/facebook/watson/irqroute.h48
-rw-r--r--src/mainboard/facebook/watson/mainboard.c30
-rw-r--r--src/mainboard/facebook/watson/romstage.c45
18 files changed, 557 insertions, 0 deletions
diff --git a/src/mainboard/facebook/Kconfig b/src/mainboard/facebook/Kconfig
new file mode 100644
index 0000000000..7e99f01ac7
--- /dev/null
+++ b/src/mainboard/facebook/Kconfig
@@ -0,0 +1,16 @@
+if VENDOR_FACEBOOK
+
+choice
+ prompt "Mainboard model"
+
+source "src/mainboard/facebook/*/Kconfig.name"
+
+endchoice
+
+source "src/mainboard/facebook/*/Kconfig"
+
+config MAINBOARD_VENDOR
+ string
+ default "Facebook"
+
+endif # VENDOR_FACEBOOK
diff --git a/src/mainboard/facebook/Kconfig.name b/src/mainboard/facebook/Kconfig.name
new file mode 100644
index 0000000000..9652ea7f24
--- /dev/null
+++ b/src/mainboard/facebook/Kconfig.name
@@ -0,0 +1,2 @@
+config VENDOR_FACEBOOK
+ bool "Facebook"
diff --git a/src/mainboard/facebook/watson/Kconfig b/src/mainboard/facebook/watson/Kconfig
new file mode 100644
index 0000000000..9771407437
--- /dev/null
+++ b/src/mainboard/facebook/watson/Kconfig
@@ -0,0 +1,41 @@
+if BOARD_FACEBOOK_WATSON
+
+config BOARD_SPECIFIC_OPTIONS
+ def_bool y
+ select SOC_INTEL_FSP_BROADWELL_DE
+ select BOARD_ROMSIZE_KB_16384
+ select HAVE_ACPI_TABLES
+ select HAVE_OPTION_TABLE
+ select INTEGRATED_UART
+ select SERIRQ_CONTINUOUS_MODE
+
+config MAINBOARD_DIR
+ string
+ default "facebook/watson"
+
+config MAINBOARD_PART_NUMBER
+ string
+ default "Watson"
+
+config IRQ_SLOT_COUNT
+ int
+ default 18
+
+config CBFS_SIZE
+ hex
+ default 0x00800000
+
+config VIRTUAL_ROM_SIZE
+ hex
+ # Set to CONFIG_ROM_SIZE*2 if using concatenated flash chips.
+ # See FSP's Kconfig for details.
+ default ROM_SIZE
+
+config DRIVERS_UART_8250IO
+ def_bool n
+
+config FMDFILE
+ string
+ default "src/mainboard/$(CONFIG_MAINBOARD_DIR)/board.fmd"
+
+endif # BOARD_FACEBOOK_WATSON
diff --git a/src/mainboard/facebook/watson/Kconfig.name b/src/mainboard/facebook/watson/Kconfig.name
new file mode 100644
index 0000000000..ea6c344791
--- /dev/null
+++ b/src/mainboard/facebook/watson/Kconfig.name
@@ -0,0 +1,2 @@
+config BOARD_FACEBOOK_WATSON
+ bool "Watson"
diff --git a/src/mainboard/facebook/watson/Makefile.inc b/src/mainboard/facebook/watson/Makefile.inc
new file mode 100644
index 0000000000..1606476d80
--- /dev/null
+++ b/src/mainboard/facebook/watson/Makefile.inc
@@ -0,0 +1,16 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2012 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.
+##
+
+ramstage-y += irqroute.c
diff --git a/src/mainboard/facebook/watson/acpi/mainboard.asl b/src/mainboard/facebook/watson/acpi/mainboard.asl
new file mode 100644
index 0000000000..62944ef353
--- /dev/null
+++ b/src/mainboard/facebook/watson/acpi/mainboard.asl
@@ -0,0 +1,20 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2012 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.
+ */
+
+Device (PWRB)
+{
+ Name(_HID, EisaId("PNP0C0C"))
+}
diff --git a/src/mainboard/facebook/watson/acpi/platform.asl b/src/mainboard/facebook/watson/acpi/platform.asl
new file mode 100644
index 0000000000..7ffae2e6e0
--- /dev/null
+++ b/src/mainboard/facebook/watson/acpi/platform.asl
@@ -0,0 +1,56 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2007-2009 coresystems GmbH
+ * Copyright (C) 2012 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.
+ */
+
+/* The APM port can be used for generating software SMIs */
+
+OperationRegion (APMP, SystemIO, 0xb2, 2)
+Field (APMP, ByteAcc, NoLock, Preserve)
+{
+ APMC, 8, // APM command
+ APMS, 8 // APM status
+}
+
+/* Port 80 POST */
+
+OperationRegion (POST, SystemIO, 0x80, 1)
+Field (POST, ByteAcc, Lock, Preserve)
+{
+ DBG0, 8
+}
+
+Name(\APC1, Zero) // IIO IOAPIC
+
+Name(\PICM, Zero) // IOAPIC/8259
+
+Method(_PIC, 1)
+{
+ Store(Arg0, PICM)
+}
+
+/* The _PTS method (Prepare To Sleep) is called before the OS is
+ * entering a sleep state. The sleep state number is passed in Arg0
+ */
+
+Method(_PTS,1)
+{
+}
+
+/* The _WAK method is called on system wakeup */
+
+Method(_WAK,1)
+{
+ Return(Package(){0,0})
+}
diff --git a/src/mainboard/facebook/watson/acpi_tables.c b/src/mainboard/facebook/watson/acpi_tables.c
new file mode 100644
index 0000000000..250ff58b36
--- /dev/null
+++ b/src/mainboard/facebook/watson/acpi_tables.c
@@ -0,0 +1,42 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2012 Google Inc.
+ * Copyright (C) 2015-2016 Intel Corp.
+ *
+ * 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 <arch/ioapic.h>
+#include <soc/acpi.h>
+#include <soc/iomap.h>
+
+unsigned long acpi_fill_madt(unsigned long current)
+{
+ u32 i;
+
+ current = acpi_create_madt_lapics(current);
+
+ current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *) current, 8,
+ IOXAPIC1_BASE_ADDRESS, 0);
+ set_ioapic_id((u8 *)IOXAPIC1_BASE_ADDRESS, 8);
+
+ current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *) current, 9,
+ IOXAPIC2_BASE_ADDRESS, 24);
+ set_ioapic_id((u8 *)IOXAPIC2_BASE_ADDRESS, 9);
+
+ current = acpi_madt_irq_overrides(current);
+
+ for (i = 0; i < 16; i++)
+ current += acpi_create_madt_lapic_nmi(
+ (acpi_madt_lapic_nmi_t *)current, i, 0xD, 1);
+
+ return current;
+}
diff --git a/src/mainboard/facebook/watson/board.fmd b/src/mainboard/facebook/watson/board.fmd
new file mode 100644
index 0000000000..6abf7a74aa
--- /dev/null
+++ b/src/mainboard/facebook/watson/board.fmd
@@ -0,0 +1,25 @@
+FLASH@0xff000000 0x1000000 {
+ SI_DESC@0x0 0x1000
+ IDPROM@0x1000 0x500
+ UNUSED_1@0x1500 0x1FB00
+ SI_ME@0x21000 0x3de000
+ UNUSED_2@0x400000 0x200000
+ SI_BIOS@0x600000 0xA00000 {
+ FMAP@0x0 0x1000
+ RW_MISC@0x1000 0xe000 {
+ RW_ELOG@0x0 0x4000
+ RW_VPD@0x4000 0x2000
+ RW_MISC_UNUSED@0x6000 0x5000
+ RW_NVRAM@0xc000 0x2000
+ }
+ UNIFIED_MRC_CACHE@0x10000 0x20000 {
+ RECOVERY_MRC_CACHE@0x0 0x10000
+ RW_MRC_CACHE@0x10000 0x10000
+ }
+ # This only exists to satisfy tools that specifically
+ # look for RO_VPD.
+ RO_VPD@0x30000 0x1000
+ UNUSED_3@0x31000 0x1CF000
+ COREBOOT(CBFS)@0x200000 0x800000
+ }
+}
diff --git a/src/mainboard/facebook/watson/board_info.txt b/src/mainboard/facebook/watson/board_info.txt
new file mode 100644
index 0000000000..3278401533
--- /dev/null
+++ b/src/mainboard/facebook/watson/board_info.txt
@@ -0,0 +1,4 @@
+Board name: Watson
+Category: server
+ROM protocol: SPI
+ROM socketed: yes
diff --git a/src/mainboard/facebook/watson/cmos.layout b/src/mainboard/facebook/watson/cmos.layout
new file mode 100644
index 0000000000..85506ebe26
--- /dev/null
+++ b/src/mainboard/facebook/watson/cmos.layout
@@ -0,0 +1,105 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2007-2008 coresystems GmbH
+##
+## 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.
+##
+
+# -----------------------------------------------------------------
+entries
+
+#start-bit length config config-ID name
+#0 8 r 0 seconds
+#8 8 r 0 alarm_seconds
+#16 8 r 0 minutes
+#24 8 r 0 alarm_minutes
+#32 8 r 0 hours
+#40 8 r 0 alarm_hours
+#48 8 r 0 day_of_week
+#56 8 r 0 day_of_month
+#64 8 r 0 month
+#72 8 r 0 year
+# -----------------------------------------------------------------
+# Status Register A
+#80 4 r 0 rate_select
+#84 3 r 0 REF_Clock
+#87 1 r 0 UIP
+# -----------------------------------------------------------------
+# Status Register B
+#88 1 r 0 auto_switch_DST
+#89 1 r 0 24_hour_mode
+#90 1 r 0 binary_values_enable
+#91 1 r 0 square-wave_out_enable
+#92 1 r 0 update_finished_enable
+#93 1 r 0 alarm_interrupt_enable
+#94 1 r 0 periodic_interrupt_enable
+#95 1 r 0 disable_clock_updates
+# -----------------------------------------------------------------
+# Status Register C
+#96 4 r 0 status_c_rsvd
+#100 1 r 0 uf_flag
+#101 1 r 0 af_flag
+#102 1 r 0 pf_flag
+#103 1 r 0 irqf_flag
+# -----------------------------------------------------------------
+# Status Register D
+#104 7 r 0 status_d_rsvd
+#111 1 r 0 valid_cmos_ram
+# -----------------------------------------------------------------
+# Diagnostic Status Register
+#112 8 r 0 diag_rsvd1
+
+# -----------------------------------------------------------------
+0 120 r 0 reserved_memory
+120 264 r 0 unused
+
+# -----------------------------------------------------------------
+# RTC_BOOT_BYTE (coreboot hardcoded)
+384 1 e 4 boot_option
+388 4 h 0 reboot_counter
+#390 2 r 0 unused?
+
+# -----------------------------------------------------------------
+# coreboot config options: console
+#392 3 r 0 unused
+395 4 e 6 debug_level
+#399 1 r 0 unused
+
+# coreboot config options: check sums
+984 16 h 0 check_sum
+
+# -----------------------------------------------------------------
+
+enumerations
+
+#ID value text
+1 0 Disable
+1 1 Enable
+2 0 Enable
+2 1 Disable
+4 0 Fallback
+4 1 Normal
+6 1 Emergency
+6 2 Alert
+6 3 Critical
+6 4 Error
+6 5 Warning
+6 6 Notice
+6 7 Info
+6 8 Debug
+6 9 Spew
+7 0 Disable
+7 1 Enable
+7 2 Keep
+# -----------------------------------------------------------------
+checksums
+
+checksum 392 415 984
diff --git a/src/mainboard/facebook/watson/devicetree.cb b/src/mainboard/facebook/watson/devicetree.cb
new file mode 100644
index 0000000000..30d99c22eb
--- /dev/null
+++ b/src/mainboard/facebook/watson/devicetree.cb
@@ -0,0 +1,15 @@
+chip soc/intel/fsp_broadwell_de
+ device cpu_cluster 0 on
+ device lapic 0 on end
+ end
+ device domain 0 on
+ device pci 00.0 on end # SoC router
+ device pci 14.0 on end # xHCI Controller
+ device pci 19.0 on end # Gigabit LAN Controller
+ device pci 1d.0 on end # EHCI Controller
+ device pci 1f.0 on end # LPC Bridge
+ device pci 1f.2 on end # SATA Controller
+ device pci 1f.3 on end # SMBus Controller
+ device pci 1f.5 on end # SATA Controller
+ end
+end
diff --git a/src/mainboard/facebook/watson/dsdt.asl b/src/mainboard/facebook/watson/dsdt.asl
new file mode 100644
index 0000000000..8861f32c76
--- /dev/null
+++ b/src/mainboard/facebook/watson/dsdt.asl
@@ -0,0 +1,44 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2007-2009 coresystems GmbH
+ * Copyright (C) 2011 Google Inc.
+ * Copyright (C) 2015-2016 Intel Corp.
+ *
+ * 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.
+ */
+
+DefinitionBlock(
+ "dsdt.aml",
+ "DSDT",
+ 0x02, // DSDT revision: ACPI v2.0
+ "COREv4", // OEM id
+ "COREBOOT", // OEM table id
+ 0x20110725 // OEM revision
+)
+{
+ #include "acpi/platform.asl"
+
+ Name(_S0, Package() { 0x00, 0x00, 0x00, 0x00 })
+ Name(_S5, Package() { 0x07, 0x00, 0x00, 0x00 })
+
+ Scope (\_SB)
+ {
+ Device (PCI0)
+ {
+ #include <acpi/southcluster.asl>
+ #include <acpi/pcie1.asl>
+ }
+
+ #include <acpi/uncore.asl>
+ }
+
+ #include "acpi/mainboard.asl"
+}
diff --git a/src/mainboard/facebook/watson/fadt.c b/src/mainboard/facebook/watson/fadt.c
new file mode 100644
index 0000000000..a7622277b0
--- /dev/null
+++ b/src/mainboard/facebook/watson/fadt.c
@@ -0,0 +1,28 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2007-2009 coresystems GmbH
+ *
+ * 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/acpi.h>
+
+void acpi_create_fadt(acpi_fadt_t *fadt, acpi_facs_t *facs, void *dsdt)
+{
+ acpi_header_t *header = &(fadt->header);
+
+ acpi_fill_in_fadt(fadt, facs, dsdt);
+
+ /* Platform specific customizations go here */
+
+ header->checksum = 0;
+ header->checksum = acpi_checksum((void *) fadt, sizeof(acpi_fadt_t));
+}
diff --git a/src/mainboard/facebook/watson/irqroute.c b/src/mainboard/facebook/watson/irqroute.c
new file mode 100644
index 0000000000..f91cf0d5b3
--- /dev/null
+++ b/src/mainboard/facebook/watson/irqroute.c
@@ -0,0 +1,18 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2012 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 "irqroute.h"
+
+DEFINE_IRQ_ROUTES;
diff --git a/src/mainboard/facebook/watson/irqroute.h b/src/mainboard/facebook/watson/irqroute.h
new file mode 100644
index 0000000000..c3911be75b
--- /dev/null
+++ b/src/mainboard/facebook/watson/irqroute.h
@@ -0,0 +1,48 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2012 Google Inc.
+ * Copyright (C) 2015-2016 Intel Corp.
+ *
+ * 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 IRQROUTE_H
+#define IRQROUTE_H
+
+#include <soc/irq.h>
+#include <soc/pci_devs.h>
+
+#define PCI_DEV_PIRQ_ROUTES \
+ PCI_DEV_PIRQ_ROUTE(XHCI_DEV, A, B, C, D), \
+ PCI_DEV_PIRQ_ROUTE(ME_DEV, A, B, C, D), \
+ PCI_DEV_PIRQ_ROUTE(GBE_DEV, A, B, C, D), \
+ PCI_DEV_PIRQ_ROUTE(EHCI2_DEV, A, B, C, D), \
+ PCI_DEV_PIRQ_ROUTE(HDA_DEV, A, B, C, D), \
+ PCI_DEV_PIRQ_ROUTE(PCIE_DEV, A, B, C, D), \
+ PCI_DEV_PIRQ_ROUTE(EHCI1_DEV, A, B, C, D), \
+ PCI_DEV_PIRQ_ROUTE(SATA_DEV, A, B, C, D)
+
+/*
+ * Route each PIRQ[A-H] to a PIC IRQ[0-15]
+ * Reserved: 0, 1, 2, 8, 13
+ * ACPI/SCI: 9
+ */
+#define PIRQ_PIC_ROUTES \
+ PIRQ_PIC(A, 5), \
+ PIRQ_PIC(B, 6), \
+ PIRQ_PIC(C, 7), \
+ PIRQ_PIC(D, 10), \
+ PIRQ_PIC(E, 11), \
+ PIRQ_PIC(F, 12), \
+ PIRQ_PIC(G, 14), \
+ PIRQ_PIC(H, 15)
+
+#endif /* IRQROUTE_H */
diff --git a/src/mainboard/facebook/watson/mainboard.c b/src/mainboard/facebook/watson/mainboard.c
new file mode 100644
index 0000000000..e6b78501a4
--- /dev/null
+++ b/src/mainboard/facebook/watson/mainboard.c
@@ -0,0 +1,30 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2007-2009 coresystems GmbH
+ * Copyright (C) 2011 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/device.h>
+
+/*
+ * mainboard_enable is executed as first thing after enumerate_buses().
+ * This is the earliest point to add customization.
+ */
+static void mainboard_enable(struct device *dev)
+{
+
+}
+
+struct chip_operations mainboard_ops = {
+ .enable_dev = mainboard_enable,
+};
diff --git a/src/mainboard/facebook/watson/romstage.c b/src/mainboard/facebook/watson/romstage.c
new file mode 100644
index 0000000000..cf52c01f04
--- /dev/null
+++ b/src/mainboard/facebook/watson/romstage.c
@@ -0,0 +1,45 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2013 Google Inc.
+ * Copyright (C) 2015 Intel Corp.
+ *
+ * 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 <stddef.h>
+#include <soc/romstage.h>
+#include <drivers/intel/fsp1_0/fsp_util.h>
+
+/**
+ * /brief mainboard call for setup that needs to be done before fsp init
+ *
+ */
+void early_mainboard_romstage_entry(void)
+{
+
+}
+
+/**
+ * /brief mainboard call for setup that needs to be done after fsp init
+ *
+ */
+void late_mainboard_romstage_entry(void)
+{
+
+}
+
+/**
+ * /brief customize fsp parameters here if needed
+ */
+void romstage_fsp_rt_buffer_callback(FSP_INIT_RT_BUFFER *FspRtBuffer)
+{
+
+}