mainboard: add Dell Latitude E7240

Based on autoport output.

It boots from USB and mSATA with SeaBIOS.

Change-Id: I6933bdbcc8d0bbb85d62657624740266284ac71c
Signed-off-by: Iru Cai <mytbk920423@gmail.com>

18 files changed, 505 insertions, 0 deletions

diff --git a/Documentation/mainboard/dell/latitude_e7240.md b/Documentation/mainboard/dell/latitude_e7240.md
new file mode 100644
index 0000000000..2d2c48ae6d
--- /dev/null
+++ b/Documentation/mainboard/dell/latitude_e7240.md
@@ -0,0 +1,79 @@
+# Dell Latitude E7240
+
+This page is about the notebook [Dell Latitude E7240].
+
+## Release status
+
+Dell Latitude E7240 was released in 2013 and is now end of life.
+It can be bought from a secondhand market like Taobao or eBay.
+
+## Required proprietary blobs
+
+The following blobs are required to operate the hardware:
+1. mrc.bin
+2. Intel ME firmware
+
+Memory reference code in mrc.bin is used to initialize the Haswell platform.
+You need this blob to build a working coreboot image. Please read
+[mrc.bin](../../northbridge/intel/haswell/mrc.bin) for instructions on
+retrieving and using it.
+
+Intel ME firmware is in the flash chip. It is not needed when building coreboot.
+It can be extracted from the OEM firmware. You can also flash only the BIOS
+region to leave Intel ME firmware untouched.
+
+## Programming
+
+To flash with a programmer, you need to remove the battery and the base cover.
+
+For more details have a look at the general [flashing tutorial].
+
+It is also possible to flash internally with flashrom when the IFD is unlocked.
+
+## Debugging
+
+The board can be debugged with EHCI debug. The EHCI debug port is next to the miniDP port.
+
+There's a serial port on dock, but it's not supported yet in coreboot.
+
+Schematic of this laptop can be found on [Lab One]. The board name is Compal LA-9431P.
+
+## Test status
+
+### Not working
+
+- EC ACPI
+- Touchpad and the buttons on it
+- SD/MMC card reader (kernel reports "Timeout waiting for hardware cmd interrupt.")
+- No internal display before booting to OS when connected with a dock
+
+### Working
+
+- Integrated graphics init with libgfxinit
+- mSATA
+- WLAN
+- USB
+- Keyboard
+- Dock: all USB ports, DisplayPort, eSATA
+- Internal flashing when IFD is unlocked
+
+
+## Technology
+
+```eval_rst
++------------------+-----------------------------+
+| CPU              | Intel Haswell-ULT           |
++------------------+-----------------------------+
+| PCH              | Intel Lynx Point Low Power  |
++------------------+-----------------------------+
+| EC               | SMSC MEC5075                |
++------------------+-----------------------------+
+| Super I/O        | SMSC ECE5048                |
++------------------+-----------------------------+
+| Coprocessor      | Intel Management Engine     |
++------------------+-----------------------------+
+```
+
+[Dell Latitude E7240]: https://www.dell.com/support/home/en-us/product-support/product/latitude-e7240-ultrabook/docs
+[flashing tutorial]: ../../flash_tutorial/ext_power.md
+[Lab One]: https://www.laboneinside.com/dell-latitude-e7240-schematic-diagram/
diff --git a/Documentation/mainboard/index.md b/Documentation/mainboard/index.md
index 1f8f6bc26e..d16eaba127 100644
--- a/Documentation/mainboard/index.md
+++ b/Documentation/mainboard/index.md
@@ -32,6 +32,7 @@ This section contains documentation about coreboot on specific mainboards.
 
 ## Dell
 
+- [Latitude E7240](dell/latitude_e7240.md)
 - [OptiPlex 9010 SFF](dell/optiplex_9010.md)
 
 ## Emulation
diff --git a/src/mainboard/dell/latitude_e7240/Kconfig b/src/mainboard/dell/latitude_e7240/Kconfig
new file mode 100644
index 0000000000..2e3b4b4a07
--- /dev/null
+++ b/src/mainboard/dell/latitude_e7240/Kconfig
@@ -0,0 +1,37 @@
+if BOARD_DELL_LATITUDE_E7240
+
+config BOARD_SPECIFIC_OPTIONS
+	def_bool y
+	select BOARD_ROMSIZE_KB_8192
+	select EC_DELL_MEC5055
+	select HAVE_ACPI_RESUME
+	select HAVE_ACPI_TABLES
+	select INTEL_INT15
+	select INTEL_LYNXPOINT_LP
+	select MAINBOARD_HAS_LIBGFXINIT
+	select NORTHBRIDGE_INTEL_HASWELL
+	select SERIRQ_CONTINUOUS_MODE
+	select SOUTHBRIDGE_INTEL_LYNXPOINT
+	select SYSTEM_TYPE_LAPTOP
+
+config MAINBOARD_DIR
+	string
+	default "dell/latitude_e7240"
+
+config MAINBOARD_PART_NUMBER
+	string
+	default "Latitude E7240"
+
+config VGA_BIOS_FILE
+	string
+	default "pci8086,0a16.rom"
+
+config VGA_BIOS_ID
+	string
+	default "8086,0a16"
+
+config USBDEBUG_HCD_INDEX
+	int
+	default 1
+
+endif
diff --git a/src/mainboard/dell/latitude_e7240/Kconfig.name b/src/mainboard/dell/latitude_e7240/Kconfig.name
new file mode 100644
index 0000000000..83ab9358a5
--- /dev/null
+++ b/src/mainboard/dell/latitude_e7240/Kconfig.name
@@ -0,0 +1,2 @@
+config BOARD_DELL_LATITUDE_E7240
+	bool "Latitude E7240"
diff --git a/src/mainboard/dell/latitude_e7240/Makefile.inc b/src/mainboard/dell/latitude_e7240/Makefile.inc
new file mode 100644
index 0000000000..ec8ca220a5
--- /dev/null
+++ b/src/mainboard/dell/latitude_e7240/Makefile.inc
@@ -0,0 +1,4 @@
+bootblock-y += bootblock.c
+bootblock-y += gpio.c
+romstage-y += gpio.c
+ramstage-$(CONFIG_MAINBOARD_USE_LIBGFXINIT) += gma-mainboard.ads
diff --git a/src/mainboard/dell/latitude_e7240/acpi/ec.asl b/src/mainboard/dell/latitude_e7240/acpi/ec.asl
new file mode 100644
index 0000000000..24915c22ef
--- /dev/null
+++ b/src/mainboard/dell/latitude_e7240/acpi/ec.asl
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+/* FIXME: not working yet */
+Device(EC)
+{
+	Name (_HID, EISAID("PNP0C09"))
+	Name (_UID, 0)
+	Name (_GPE, 39)
+
+	Method (_Q66, 0, NotSerialized)
+	{
+		Store ("EC: _Q66", Debug)
+	}
+}
diff --git a/src/mainboard/dell/latitude_e7240/acpi/platform.asl b/src/mainboard/dell/latitude_e7240/acpi/platform.asl
new file mode 100644
index 0000000000..2d24bbd9b9
--- /dev/null
+++ b/src/mainboard/dell/latitude_e7240/acpi/platform.asl
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+Method(_WAK, 1)
+{
+	/* FIXME: EC support  */
+	Return(Package() {0, 0})
+}
+
+Method(_PTS,1)
+{
+	/* FIXME: EC support  */
+}
diff --git a/src/mainboard/dell/latitude_e7240/acpi/superio.asl b/src/mainboard/dell/latitude_e7240/acpi/superio.asl
new file mode 100644
index 0000000000..55b1db5b11
--- /dev/null
+++ b/src/mainboard/dell/latitude_e7240/acpi/superio.asl
@@ -0,0 +1,3 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <drivers/pc80/pc/ps2_controller.asl>
diff --git a/src/mainboard/dell/latitude_e7240/acpi_tables.c b/src/mainboard/dell/latitude_e7240/acpi_tables.c
new file mode 100644
index 0000000000..5c018f174b
--- /dev/null
+++ b/src/mainboard/dell/latitude_e7240/acpi_tables.c
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <acpi/acpi_gnvs.h>
+#include <southbridge/intel/lynxpoint/nvs.h>
+
+/* FIXME: check this function.  */
+void acpi_create_gnvs(struct global_nvs *gnvs)
+{
+	/* The lid is open by default. */
+	gnvs->lids = 1;
+
+	/* Temperature at which OS will shutdown */
+	gnvs->tcrt = 100;
+	/* Temperature at which OS will throttle CPU */
+	gnvs->tpsv = 90;
+}
diff --git a/src/mainboard/dell/latitude_e7240/board_info.txt b/src/mainboard/dell/latitude_e7240/board_info.txt
new file mode 100644
index 0000000000..46e950abbd
--- /dev/null
+++ b/src/mainboard/dell/latitude_e7240/board_info.txt
@@ -0,0 +1,7 @@
+Category: laptop
+Board URL: https://www.dell.com/support/home/en-us/product-support/product/latitude-e7240-ultrabook/docs
+ROM protocol: SPI
+ROM package: SOIC-8
+ROM socketed: n
+Flashrom support: n
+Release year: 2013
diff --git a/src/mainboard/dell/latitude_e7240/bootblock.c b/src/mainboard/dell/latitude_e7240/bootblock.c
new file mode 100644
index 0000000000..62f7fc2aa0
--- /dev/null
+++ b/src/mainboard/dell/latitude_e7240/bootblock.c
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <device/pci_ops.h>
+#include <ec/dell/mec5055/mec5055.h>
+#include <southbridge/intel/lynxpoint/pch.h>
+
+void mainboard_config_superio(void)
+{
+	/* port 0x910 and 0x911 is needed to initialize the EC */
+	pci_write_config32(PCH_LPC_DEV, LPC_GEN2_DEC, 0x007c0901);
+	mec5055_early_init();
+	pci_write_config32(PCH_LPC_DEV, LPC_GEN2_DEC, 0x005c0921);
+}
diff --git a/src/mainboard/dell/latitude_e7240/devicetree.cb b/src/mainboard/dell/latitude_e7240/devicetree.cb
new file mode 100644
index 0000000000..9395347bd9
--- /dev/null
+++ b/src/mainboard/dell/latitude_e7240/devicetree.cb
@@ -0,0 +1,75 @@
+chip northbridge/intel/haswell
+	register "ec_present" = "true"
+	register "gfx" = "GMA_STATIC_DISPLAYS(0)"
+	register "gpu_ddi_e_connected" = "0"
+	register "gpu_dp_b_hotplug" = "4"
+	register "gpu_dp_c_hotplug" = "4"
+	register "gpu_dp_d_hotplug" = "4"
+	register "gpu_panel_power_backlight_off_delay" = "1"
+	register "gpu_panel_power_backlight_on_delay" = "1"
+	register "gpu_panel_power_cycle_delay" = "6"
+	register "gpu_panel_power_down_delay" = "500"
+	register "gpu_panel_power_up_delay" = "2000"
+	register "gpu_pch_backlight_pwm_hz" = "200"
+	device cpu_cluster 0x0 on
+		chip cpu/intel/haswell
+			register "c1_acpower" = "2"
+			register "c1_battery" = "2"
+			register "c2_acpower" = "3"
+			register "c2_battery" = "3"
+			register "c3_acpower" = "9"
+			register "c3_battery" = "9"
+			device lapic 0x0 on end
+			device lapic 0xacac off end
+		end
+	end
+	device domain 0x0 on
+		subsystemid  0x1028 0x05ca inherit
+
+		device pci 00.0 on end # Host bridge
+		device pci 02.0 on end # Internal graphics VGA controller
+		device pci 03.0 on end # Mini-HD audio
+
+		chip southbridge/intel/lynxpoint # Intel Series 8 Lynx Point PCH
+			register "docking_supported" = "1"
+			register "gen1_dec" = "0x007c0681"
+			register "gen2_dec" = "0x005c0921"
+			register "gen3_dec" = "0x003c07e1"
+
+			register "alt_gp_smi_en" = "0x00002000"
+			register "gpe0_en_1" = "0x00000100"
+			register "gpe0_en_2" = "0x00000080"
+			register "gpe0_en_4" = "0x00000042"
+
+			# 0(eSATA on dock), 1(mSATA near the fan), 3(mSATA near WLAN)
+			register "sata_port_map" = "0x0b"
+
+			device pci 14.0 on  end # xHCI Controller
+			device pci 15.0 off end # Serial I/O DMA
+			device pci 15.1 off end # I2C0
+			device pci 15.2 off 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 on  end # Intel Gigabit Ethernet
+			device pci 1b.0 on  end # High Definition Audio
+			device pci 1c.0 on  end # PCIe Port #1
+			device pci 1c.1 off end # PCIe Port #2
+			device pci 1c.2 off end # PCIe Port #3
+			device pci 1c.3 on  end # PCIe Port #4, WLAN
+			device pci 1c.4 on  end # PCIe Port #5, SD/MMC Card Reader
+			device pci 1c.5 off end # PCIe Port #6
+			device pci 1d.0 on  end # USB2 EHCI #1
+			device pci 1f.0 on  end # LPC bridge
+			device pci 1f.2 on  end # SATA Controller (AHCI)
+			device pci 1f.3 on  end # SMBus
+			device pci 1f.6 off end # Thermal
+		end
+	end
+end
diff --git a/src/mainboard/dell/latitude_e7240/dsdt.asl b/src/mainboard/dell/latitude_e7240/dsdt.asl
new file mode 100644
index 0000000000..b5343726ff
--- /dev/null
+++ b/src/mainboard/dell/latitude_e7240/dsdt.asl
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <acpi/acpi.h>
+
+DefinitionBlock(
+	"dsdt.aml",
+	"DSDT",
+	ACPI_DSDT_REV_2,
+	OEM_ID,
+	ACPI_TABLE_CREATOR,
+	0x20141018	/* OEM revision */
+)
+{
+	#include "acpi/platform.asl"
+	#include <cpu/intel/common/acpi/cpu.asl>
+	#include <southbridge/intel/common/acpi/platform.asl>
+	/* global NVS and variables. */
+	#include <southbridge/intel/lynxpoint/acpi/globalnvs.asl>
+	#include <southbridge/intel/common/acpi/sleepstates.asl>
+
+	Device (\_SB.PCI0)
+	{
+		#include <northbridge/intel/haswell/acpi/hostbridge.asl>
+		#include <drivers/intel/gma/acpi/default_brightness_levels.asl>
+		#include <southbridge/intel/lynxpoint/acpi/pch.asl>
+	}
+}
diff --git a/src/mainboard/dell/latitude_e7240/gma-mainboard.ads b/src/mainboard/dell/latitude_e7240/gma-mainboard.ads
new file mode 100644
index 0000000000..cdc7f18680
--- /dev/null
+++ b/src/mainboard/dell/latitude_e7240/gma-mainboard.ads
@@ -0,0 +1,17 @@
+-- SPDX-License-Identifier: GPL-2.0-or-later
+
+with HW.GFX.GMA;
+with HW.GFX.GMA.Display_Probing;
+
+use HW.GFX.GMA;
+use HW.GFX.GMA.Display_Probing;
+
+private package GMA.Mainboard is
+
+   ports : constant Port_List :=
+     (DP2,
+      HDMI1,
+      eDP,
+      others => Disabled);
+
+end GMA.Mainboard;
diff --git a/src/mainboard/dell/latitude_e7240/gpio.c b/src/mainboard/dell/latitude_e7240/gpio.c
new file mode 100644
index 0000000000..52a108d29f
--- /dev/null
+++ b/src/mainboard/dell/latitude_e7240/gpio.c
@@ -0,0 +1,110 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <southbridge/intel/lynxpoint/lp_gpio.h>
+
+const struct pch_lp_gpio_map mainboard_gpio_map[] = {
+	[0]  = LP_GPIO_OUT_LOW,
+	[1]  = { .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT | GPIO_IRQ_LEVEL },
+	[2]  = { .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT | GPIO_INVERT | GPIO_IRQ_LEVEL },
+	[3]  = LP_GPIO_OUT_LOW,
+	[4]  = LP_GPIO_NATIVE,
+	[5]  = LP_GPIO_NATIVE,
+	[6]  = LP_GPIO_NATIVE,
+	[7]  = LP_GPIO_NATIVE,
+	[8]  = { .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT | GPIO_INVERT | GPIO_IRQ_LEVEL,
+		 .pirq  = GPIO_PIRQ_APIC_ROUTE },
+	[9]  = { .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT | GPIO_IRQ_LEVEL,
+		 .pirq  = GPIO_PIRQ_APIC_ROUTE },
+	[10] = LP_GPIO_OUT_LOW,
+	[11] = LP_GPIO_NATIVE,
+	[12] = LP_GPIO_NATIVE,
+	[13] = { .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT | GPIO_INVERT | GPIO_IRQ_LEVEL,
+		 .pirq  = GPIO_PIRQ_APIC_ROUTE },
+	[14] = LP_GPIO_OUT_LOW,
+	[15] = LP_GPIO_OUT_LOW,
+	[16] = LP_GPIO_OUT_HIGH,
+	[17] = LP_GPIO_OUT_LOW,
+	[18] = LP_GPIO_NATIVE,
+	[19] = LP_GPIO_NATIVE,
+	[20] = LP_GPIO_NATIVE,
+	[21] = LP_GPIO_NATIVE,
+	[22] = LP_GPIO_NATIVE,
+	[23] = LP_GPIO_NATIVE,
+	[24] = LP_GPIO_OUT_LOW,
+	[25] = LP_GPIO_OUT_LOW,
+	[26] = { .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT },
+	[27] = { .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT | GPIO_INVERT | GPIO_IRQ_LEVEL },
+	[28] = LP_GPIO_OUT_LOW,
+	[29] = LP_GPIO_NATIVE,
+	[30] = LP_GPIO_NATIVE,
+	[31] = LP_GPIO_NATIVE,
+	[32] = LP_GPIO_NATIVE,
+	[33] = { .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT | GPIO_INVERT | GPIO_IRQ_LEVEL },
+	[34] = LP_GPIO_OUT_HIGH,
+	[35] = { .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT | GPIO_INVERT | GPIO_IRQ_LEVEL },
+	[36] = LP_GPIO_OUT_LOW,
+	[37] = LP_GPIO_NATIVE,
+	[38] = { .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT | GPIO_INVERT | GPIO_IRQ_LEVEL },
+	[39] = { .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT | GPIO_INVERT | GPIO_IRQ_LEVEL },
+	[40] = LP_GPIO_NATIVE,
+	[41] = LP_GPIO_NATIVE,
+	[42] = LP_GPIO_NATIVE,
+	[43] = LP_GPIO_NATIVE,
+	[44] = LP_GPIO_OUT_LOW,
+	[45] = { .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT | GPIO_INVERT | GPIO_IRQ_LEVEL,
+		 .route = GPIO_ROUTE_SMI,
+		 .pirq  = GPIO_PIRQ_APIC_ROUTE },
+	[46] = LP_GPIO_OUT_LOW,
+	[47] = { .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT | GPIO_INVERT,
+		 .pirq  = GPIO_PIRQ_APIC_ROUTE },
+	[48] = LP_GPIO_OUT_LOW,
+	[49] = LP_GPIO_OUT_LOW,
+	[50] = LP_GPIO_OUT_HIGH,
+	[51] = LP_GPIO_OUT_LOW,
+	[52] = { .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT | GPIO_IRQ_LEVEL,
+		 .pirq  = GPIO_PIRQ_APIC_ROUTE },
+	[53] = { .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT, .pirq = GPIO_PIRQ_APIC_ROUTE },
+	[54] = LP_GPIO_OUT_LOW,
+	[55] = { .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT | GPIO_INVERT,
+		 .pirq  = GPIO_PIRQ_APIC_ROUTE },
+	[56] = LP_GPIO_OUT_HIGH,
+	[57] = LP_GPIO_OUT_HIGH,
+	[58] = { .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT },
+	[59] = { .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT | GPIO_INVERT | GPIO_IRQ_LEVEL },
+	[60] = LP_GPIO_OUT_LOW,
+	[61] = LP_GPIO_NATIVE,
+	[62] = LP_GPIO_NATIVE,
+	[63] = LP_GPIO_NATIVE,
+	[64] = { .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT | GPIO_INVERT | GPIO_IRQ_LEVEL },
+	[65] = { .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT | GPIO_INVERT | GPIO_IRQ_LEVEL },
+	[66] = LP_GPIO_OUT_LOW,
+	[67] = { .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT | GPIO_IRQ_LEVEL },
+	[68] = { .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT | GPIO_IRQ_LEVEL },
+	[69] = LP_GPIO_OUT_HIGH,
+	[70] = LP_GPIO_OUT_LOW,
+	[71] = LP_GPIO_NATIVE,
+	[72] = LP_GPIO_NATIVE,
+	[73] = LP_GPIO_OUT_LOW,
+	[74] = LP_GPIO_NATIVE,
+	[75] = LP_GPIO_NATIVE,
+	[76] = LP_GPIO_OUT_HIGH,
+	[77] = { .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT | GPIO_INVERT | GPIO_IRQ_LEVEL },
+	[78] = { .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT | GPIO_IRQ_LEVEL },
+	[79] = LP_GPIO_OUT_LOW,
+	[80] = { .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT | GPIO_IRQ_LEVEL },
+	[81] = LP_GPIO_NATIVE,
+	[82] = LP_GPIO_NATIVE,
+	[83] = LP_GPIO_OUT_HIGH,
+	[84] = LP_GPIO_OUT_HIGH,
+	[85] = LP_GPIO_OUT_HIGH,
+	[86] = { .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT | GPIO_IRQ_LEVEL },
+	[87] = LP_GPIO_OUT_LOW,
+	[88] = LP_GPIO_OUT_LOW,
+	[89] = LP_GPIO_OUT_HIGH,
+	[90] = LP_GPIO_OUT_HIGH,
+	[91] = { .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT | GPIO_INVERT | GPIO_IRQ_LEVEL },
+	[92] = { .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT | GPIO_INVERT | GPIO_IRQ_LEVEL },
+	[93] = LP_GPIO_OUT_LOW,
+	[94] = LP_GPIO_OUT_LOW,
+	LP_GPIO_END
+};
diff --git a/src/mainboard/dell/latitude_e7240/hda_verb.c b/src/mainboard/dell/latitude_e7240/hda_verb.c
new file mode 100644
index 0000000000..7fd135a611
--- /dev/null
+++ b/src/mainboard/dell/latitude_e7240/hda_verb.c
@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <device/azalia_device.h>
+
+const u32 cim_verb_data[] = {
+	0x10ec0292,	/* Codec Vendor / Device ID: Realtek */
+	0x102805ca,	/* Subsystem ID */
+	12,		/* Number of 4 dword sets */
+	AZALIA_SUBVENDOR(0, 0x102805ca),
+	AZALIA_PIN_CFG(0, 0x12, 0x90a60140),
+	AZALIA_PIN_CFG(0, 0x13, 0x411111f0),
+	AZALIA_PIN_CFG(0, 0x14, 0x90170110),
+	AZALIA_PIN_CFG(0, 0x15, 0x0221401f),
+	AZALIA_PIN_CFG(0, 0x16, 0x01014020),
+	AZALIA_PIN_CFG(0, 0x18, 0x411111f0),
+	AZALIA_PIN_CFG(0, 0x19, 0x01a19030),
+	AZALIA_PIN_CFG(0, 0x1a, 0x411111f0),
+	AZALIA_PIN_CFG(0, 0x1b, 0x411111f0),
+	AZALIA_PIN_CFG(0, 0x1d, 0x40700001),
+	AZALIA_PIN_CFG(0, 0x1e, 0x411111f0),
+};
+
+const u32 pc_beep_verbs[0] = {};
+
+AZALIA_ARRAY_SIZES;
diff --git a/src/mainboard/dell/latitude_e7240/mainboard.c b/src/mainboard/dell/latitude_e7240/mainboard.c
new file mode 100644
index 0000000000..98cc8110cc
--- /dev/null
+++ b/src/mainboard/dell/latitude_e7240/mainboard.c
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <device/device.h>
+#include <drivers/intel/gma/int15.h>
+
+static void mainboard_enable(struct device *dev)
+{
+	install_intel_vga_int15_handler(GMA_INT15_ACTIVE_LFP_EDP, GMA_INT15_PANEL_FIT_DEFAULT,
+					GMA_INT15_BOOT_DISPLAY_DEFAULT, 0);
+}
+
+struct chip_operations mainboard_ops = {
+	.enable_dev = mainboard_enable,
+};
diff --git a/src/mainboard/dell/latitude_e7240/romstage.c b/src/mainboard/dell/latitude_e7240/romstage.c
new file mode 100644
index 0000000000..7b69b1c159
--- /dev/null
+++ b/src/mainboard/dell/latitude_e7240/romstage.c
@@ -0,0 +1,49 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <stdint.h>
+#include <northbridge/intel/haswell/haswell.h>
+#include <northbridge/intel/haswell/raminit.h>
+#include <southbridge/intel/lynxpoint/pch.h>
+
+void mainboard_config_rcba(void)
+{
+	RCBA16(D31IR) = DIR_ROUTE(PIRQA, PIRQD, PIRQC, PIRQA);
+	RCBA16(D29IR) = DIR_ROUTE(PIRQF, PIRQD, PIRQA, PIRQC);
+	RCBA16(D28IR) = DIR_ROUTE(PIRQA, PIRQA, PIRQA, PIRQA);
+	RCBA16(D27IR) = DIR_ROUTE(PIRQG, PIRQB, PIRQC, PIRQD);
+	RCBA16(D26IR) = DIR_ROUTE(PIRQA, PIRQF, PIRQC, PIRQD);
+	RCBA16(D25IR) = DIR_ROUTE(PIRQE, PIRQF, PIRQG, PIRQH);
+	RCBA16(D22IR) = DIR_ROUTE(PIRQA, PIRQD, PIRQC, PIRQB);
+	RCBA16(D20IR) = DIR_ROUTE(PIRQA, PIRQB, PIRQC, PIRQD);
+}
+
+void mb_get_spd_map(uint8_t spd_map[4])
+{
+	spd_map[0] = 0xa0;
+	spd_map[2] = 0xa4;
+}
+
+void mainboard_fill_pei_data(struct pei_data *pei_data)
+{
+	struct usb2_port_setting usb2_ports[MAX_USB2_PORTS] = {
+		/* Length, Enable, OCn#, Location */
+		{ 0x0040, 1, 0, USB_PORT_BACK_PANEL }, /* dock left */
+		{ 0x0040, 1, 1, USB_PORT_BACK_PANEL }, /* right, EHCI debug */
+		{ 0x0080, 1, USB_OC_PIN_SKIP, USB_PORT_DOCK },
+		{ 0x0040, 1, USB_OC_PIN_SKIP, USB_PORT_BACK_PANEL }, /* webcam */
+		{ 0x0040, 1, USB_OC_PIN_SKIP, USB_PORT_BACK_PANEL },
+		{ 0x0110, 1, 2, USB_PORT_BACK_PANEL }, /* back right, dock back */
+		{ 0x0040, 1, USB_OC_PIN_SKIP, USB_PORT_DOCK }, /* WWAN */
+		{ 0x0040, 1, USB_OC_PIN_SKIP, USB_PORT_BACK_PANEL },
+	};
+	struct usb3_port_setting usb3_ports[MAX_USB3_PORTS] = {
+		{ 1, 1 }, /* right */
+		{ 1, 0 }, /* back left */
+		{ 1, 2 }, /* back right, dock back */
+		{ 1, USB_OC_PIN_SKIP },
+		{ 1, USB_OC_PIN_SKIP },
+		{ 1, USB_OC_PIN_SKIP },
+	};
+	memcpy(pei_data->usb2_ports, usb2_ports, sizeof(usb2_ports));
+	memcpy(pei_data->usb3_ports, usb3_ports, sizeof(usb3_ports));
+}