config/coreboot: Add Dell Latitude E4300

Add patches to convert the E6400 port into a GM45 Latitude variant and
add the E4300 as another variant, and create a config for the E4300.
Tested on my E6400 and E4300.

Signed-off-by: Nicholas Chin <nic.c3.14@gmail.com>

2 files changed, 575 insertions, 0 deletions

diff --git a/config/coreboot/default/patches/0062-mb-dell-Convert-E6400-into-a-variant.patch b/config/coreboot/default/patches/0062-mb-dell-Convert-E6400-into-a-variant.patch
new file mode 100644
index 00000000..2b705719
--- /dev/null
+++ b/config/coreboot/default/patches/0062-mb-dell-Convert-E6400-into-a-variant.patch
@@ -0,0 +1,243 @@
+From e74fe3cf69a9c44b226359814f0c177090e5a56c Mon Sep 17 00:00:00 2001
+From: Nicholas Chin <nic.c3.14@gmail.com>
+Date: Thu, 26 Sep 2024 19:48:26 -0600
+Subject: [PATCH 62/63] mb/dell: Convert E6400 into a variant
+
+All the GM45 Dell Latitudes should be nearly identical, so convert the
+E6400 port into a variant so that future ports for the other systems can
+share code with each other.
+
+Change-Id: I8094fce56eaaadb20aef173644cd3b2c0b008e95
+Signed-off-by: Nicholas Chin <nic.c3.14@gmail.com>
+---
+ src/mainboard/dell/e6400/Makefile.mk          |  10 --------
+ .../dell/{e6400 => gm45_latitude}/Kconfig     |  22 +++++++++++++-----
+ .../{e6400 => gm45_latitude}/Kconfig.name     |   0
+ src/mainboard/dell/gm45_latitude/Makefile.mk  |  11 +++++++++
+ .../dell/{e6400 => gm45_latitude}/acpi/ec.asl |   0
+ .../acpi/ich9_pci_irqs.asl                    |   0
+ .../{e6400 => gm45_latitude}/acpi/superio.asl |   0
+ .../dell/{e6400 => gm45_latitude}/blc.c       |   0
+ .../{e6400 => gm45_latitude}/board_info.txt   |   0
+ .../dell/{e6400 => gm45_latitude}/bootblock.c |   0
+ .../{e6400 => gm45_latitude}/cmos.default     |   0
+ .../dell/{e6400 => gm45_latitude}/cmos.layout |   0
+ .../dell/{e6400 => gm45_latitude}/cstates.c   |   0
+ .../{e6400 => gm45_latitude}/devicetree.cb    |   1 -
+ .../dell/{e6400 => gm45_latitude}/dsdt.asl    |   0
+ .../dell/{e6400 => gm45_latitude}/mainboard.c |   0
+ .../dell/{e6400 => gm45_latitude}/romstage.c  |   0
+ .../variants}/e6400/data.vbt                  | Bin
+ .../variants}/e6400/gma-mainboard.ads         |   0
+ .../{ => gm45_latitude/variants}/e6400/gpio.c |   0
+ .../variants}/e6400/hda_verb.c                |   0
+ .../variants/e6400/overridetree.cb            |   7 ++++++
+ 22 files changed, 34 insertions(+), 17 deletions(-)
+ delete mode 100644 src/mainboard/dell/e6400/Makefile.mk
+ rename src/mainboard/dell/{e6400 => gm45_latitude}/Kconfig (64%)
+ rename src/mainboard/dell/{e6400 => gm45_latitude}/Kconfig.name (100%)
+ create mode 100644 src/mainboard/dell/gm45_latitude/Makefile.mk
+ rename src/mainboard/dell/{e6400 => gm45_latitude}/acpi/ec.asl (100%)
+ rename src/mainboard/dell/{e6400 => gm45_latitude}/acpi/ich9_pci_irqs.asl (100%)
+ rename src/mainboard/dell/{e6400 => gm45_latitude}/acpi/superio.asl (100%)
+ rename src/mainboard/dell/{e6400 => gm45_latitude}/blc.c (100%)
+ rename src/mainboard/dell/{e6400 => gm45_latitude}/board_info.txt (100%)
+ rename src/mainboard/dell/{e6400 => gm45_latitude}/bootblock.c (100%)
+ rename src/mainboard/dell/{e6400 => gm45_latitude}/cmos.default (100%)
+ rename src/mainboard/dell/{e6400 => gm45_latitude}/cmos.layout (100%)
+ rename src/mainboard/dell/{e6400 => gm45_latitude}/cstates.c (100%)
+ rename src/mainboard/dell/{e6400 => gm45_latitude}/devicetree.cb (98%)
+ rename src/mainboard/dell/{e6400 => gm45_latitude}/dsdt.asl (100%)
+ rename src/mainboard/dell/{e6400 => gm45_latitude}/mainboard.c (100%)
+ rename src/mainboard/dell/{e6400 => gm45_latitude}/romstage.c (100%)
+ rename src/mainboard/dell/{ => gm45_latitude/variants}/e6400/data.vbt (100%)
+ rename src/mainboard/dell/{ => gm45_latitude/variants}/e6400/gma-mainboard.ads (100%)
+ rename src/mainboard/dell/{ => gm45_latitude/variants}/e6400/gpio.c (100%)
+ rename src/mainboard/dell/{ => gm45_latitude/variants}/e6400/hda_verb.c (100%)
+ create mode 100644 src/mainboard/dell/gm45_latitude/variants/e6400/overridetree.cb
+
+diff --git a/src/mainboard/dell/e6400/Makefile.mk b/src/mainboard/dell/e6400/Makefile.mk
+deleted file mode 100644
+index ca3a82db48..0000000000
+--- a/src/mainboard/dell/e6400/Makefile.mk
++++ /dev/null
+@@ -1,10 +0,0 @@
+-## SPDX-License-Identifier: GPL-2.0-only
+-
+-bootblock-y += bootblock.c
+-
+-romstage-y += gpio.c
+-
+-ramstage-y += cstates.c
+-ramstage-y += blc.c
+-
+-ramstage-$(CONFIG_MAINBOARD_USE_LIBGFXINIT) += gma-mainboard.ads
+diff --git a/src/mainboard/dell/e6400/Kconfig b/src/mainboard/dell/gm45_latitude/Kconfig
+similarity index 64%
+rename from src/mainboard/dell/e6400/Kconfig
+rename to src/mainboard/dell/gm45_latitude/Kconfig
+index 6fe1b1c456..ba76fb6e8c 100644
+--- a/src/mainboard/dell/e6400/Kconfig
++++ b/src/mainboard/dell/gm45_latitude/Kconfig
+@@ -1,9 +1,7 @@
+ ## SPDX-License-Identifier: GPL-2.0-only
+ 
+-if BOARD_DELL_E6400
+-
+-config BOARD_SPECIFIC_OPTIONS
+-	def_bool y
++config BOARD_DELL_GM45_LATITUDE_COMMON
++	def_bool n
+ 	select SYSTEM_TYPE_LAPTOP
+ 	select CPU_INTEL_SOCKET_P
+ 	select NORTHBRIDGE_INTEL_GM45
+@@ -19,19 +17,31 @@ config BOARD_SPECIFIC_OPTIONS
+ 	select INTEL_GMA_HAVE_VBT
+ 	select EC_DELL_MEC5035
+ 
++
++config BOARD_DELL_E6400
++	select BOARD_DELL_GM45_LATITUDE_COMMON
++
++if BOARD_DELL_GM45_LATITUDE_COMMON
++
+ config INTEL_GMA_DPLL_REF_FREQ
+ 	default 100000000
+ 
+ config MAINBOARD_DIR
+-	default "dell/e6400"
++	default "dell/gm45_latitude"
+ 
+ config MAINBOARD_PART_NUMBER
+ 	default "Latitude E6400" if BOARD_DELL_E6400
+ 
++config OVERRIDE_DEVICETREE
++	default "variants/\$(CONFIG_VARIANT_DIR)/overridetree.cb"
++
++config VARIANT_DIR
++	default "e6400" if BOARD_DELL_E6400
++
+ config USBDEBUG_HCD_INDEX
+ 	default 1
+ 
+ config CBFS_SIZE
+ 	default 0x1A0000
+ 
+-endif # BOARD_DELL_E6400
++endif # BOARD_DELL_GM45_LATITUDE_COMMON
+diff --git a/src/mainboard/dell/e6400/Kconfig.name b/src/mainboard/dell/gm45_latitude/Kconfig.name
+similarity index 100%
+rename from src/mainboard/dell/e6400/Kconfig.name
+rename to src/mainboard/dell/gm45_latitude/Kconfig.name
+diff --git a/src/mainboard/dell/gm45_latitude/Makefile.mk b/src/mainboard/dell/gm45_latitude/Makefile.mk
+new file mode 100644
+index 0000000000..5295d5be22
+--- /dev/null
++++ b/src/mainboard/dell/gm45_latitude/Makefile.mk
+@@ -0,0 +1,11 @@
++## SPDX-License-Identifier: GPL-2.0-only
++
++bootblock-y += bootblock.c
++
++romstage-y += variants/$(VARIANT_DIR)/gpio.c
++
++ramstage-y += cstates.c
++ramstage-y += blc.c
++ramstage-y += variants/$(VARIANT_DIR)/hda_verb.c
++
++ramstage-$(CONFIG_MAINBOARD_USE_LIBGFXINIT) += variants/$(VARIANT_DIR)/gma-mainboard.ads
+diff --git a/src/mainboard/dell/e6400/acpi/ec.asl b/src/mainboard/dell/gm45_latitude/acpi/ec.asl
+similarity index 100%
+rename from src/mainboard/dell/e6400/acpi/ec.asl
+rename to src/mainboard/dell/gm45_latitude/acpi/ec.asl
+diff --git a/src/mainboard/dell/e6400/acpi/ich9_pci_irqs.asl b/src/mainboard/dell/gm45_latitude/acpi/ich9_pci_irqs.asl
+similarity index 100%
+rename from src/mainboard/dell/e6400/acpi/ich9_pci_irqs.asl
+rename to src/mainboard/dell/gm45_latitude/acpi/ich9_pci_irqs.asl
+diff --git a/src/mainboard/dell/e6400/acpi/superio.asl b/src/mainboard/dell/gm45_latitude/acpi/superio.asl
+similarity index 100%
+rename from src/mainboard/dell/e6400/acpi/superio.asl
+rename to src/mainboard/dell/gm45_latitude/acpi/superio.asl
+diff --git a/src/mainboard/dell/e6400/blc.c b/src/mainboard/dell/gm45_latitude/blc.c
+similarity index 100%
+rename from src/mainboard/dell/e6400/blc.c
+rename to src/mainboard/dell/gm45_latitude/blc.c
+diff --git a/src/mainboard/dell/e6400/board_info.txt b/src/mainboard/dell/gm45_latitude/board_info.txt
+similarity index 100%
+rename from src/mainboard/dell/e6400/board_info.txt
+rename to src/mainboard/dell/gm45_latitude/board_info.txt
+diff --git a/src/mainboard/dell/e6400/bootblock.c b/src/mainboard/dell/gm45_latitude/bootblock.c
+similarity index 100%
+rename from src/mainboard/dell/e6400/bootblock.c
+rename to src/mainboard/dell/gm45_latitude/bootblock.c
+diff --git a/src/mainboard/dell/e6400/cmos.default b/src/mainboard/dell/gm45_latitude/cmos.default
+similarity index 100%
+rename from src/mainboard/dell/e6400/cmos.default
+rename to src/mainboard/dell/gm45_latitude/cmos.default
+diff --git a/src/mainboard/dell/e6400/cmos.layout b/src/mainboard/dell/gm45_latitude/cmos.layout
+similarity index 100%
+rename from src/mainboard/dell/e6400/cmos.layout
+rename to src/mainboard/dell/gm45_latitude/cmos.layout
+diff --git a/src/mainboard/dell/e6400/cstates.c b/src/mainboard/dell/gm45_latitude/cstates.c
+similarity index 100%
+rename from src/mainboard/dell/e6400/cstates.c
+rename to src/mainboard/dell/gm45_latitude/cstates.c
+diff --git a/src/mainboard/dell/e6400/devicetree.cb b/src/mainboard/dell/gm45_latitude/devicetree.cb
+similarity index 98%
+rename from src/mainboard/dell/e6400/devicetree.cb
+rename to src/mainboard/dell/gm45_latitude/devicetree.cb
+index e9f3915d17..76dae87153 100644
+--- a/src/mainboard/dell/e6400/devicetree.cb
++++ b/src/mainboard/dell/gm45_latitude/devicetree.cb
+@@ -15,7 +15,6 @@ chip northbridge/intel/gm45
+ 	register "pci_mmio_size" = "2048"
+ 
+ 	device domain 0 on
+-		subsystemid 0x1028 0x0233 inherit
+ 		ops gm45_pci_domain_ops
+ 
+ 		device pci 00.0 on end # host bridge
+diff --git a/src/mainboard/dell/e6400/dsdt.asl b/src/mainboard/dell/gm45_latitude/dsdt.asl
+similarity index 100%
+rename from src/mainboard/dell/e6400/dsdt.asl
+rename to src/mainboard/dell/gm45_latitude/dsdt.asl
+diff --git a/src/mainboard/dell/e6400/mainboard.c b/src/mainboard/dell/gm45_latitude/mainboard.c
+similarity index 100%
+rename from src/mainboard/dell/e6400/mainboard.c
+rename to src/mainboard/dell/gm45_latitude/mainboard.c
+diff --git a/src/mainboard/dell/e6400/romstage.c b/src/mainboard/dell/gm45_latitude/romstage.c
+similarity index 100%
+rename from src/mainboard/dell/e6400/romstage.c
+rename to src/mainboard/dell/gm45_latitude/romstage.c
+diff --git a/src/mainboard/dell/e6400/data.vbt b/src/mainboard/dell/gm45_latitude/variants/e6400/data.vbt
+similarity index 100%
+rename from src/mainboard/dell/e6400/data.vbt
+rename to src/mainboard/dell/gm45_latitude/variants/e6400/data.vbt
+diff --git a/src/mainboard/dell/e6400/gma-mainboard.ads b/src/mainboard/dell/gm45_latitude/variants/e6400/gma-mainboard.ads
+similarity index 100%
+rename from src/mainboard/dell/e6400/gma-mainboard.ads
+rename to src/mainboard/dell/gm45_latitude/variants/e6400/gma-mainboard.ads
+diff --git a/src/mainboard/dell/e6400/gpio.c b/src/mainboard/dell/gm45_latitude/variants/e6400/gpio.c
+similarity index 100%
+rename from src/mainboard/dell/e6400/gpio.c
+rename to src/mainboard/dell/gm45_latitude/variants/e6400/gpio.c
+diff --git a/src/mainboard/dell/e6400/hda_verb.c b/src/mainboard/dell/gm45_latitude/variants/e6400/hda_verb.c
+similarity index 100%
+rename from src/mainboard/dell/e6400/hda_verb.c
+rename to src/mainboard/dell/gm45_latitude/variants/e6400/hda_verb.c
+diff --git a/src/mainboard/dell/gm45_latitude/variants/e6400/overridetree.cb b/src/mainboard/dell/gm45_latitude/variants/e6400/overridetree.cb
+new file mode 100644
+index 0000000000..acc34a2252
+--- /dev/null
++++ b/src/mainboard/dell/gm45_latitude/variants/e6400/overridetree.cb
+@@ -0,0 +1,7 @@
++## SPDX-License-Identifier: GPL-2.0-or-later
++
++chip northbridge/intel/gm45
++	device domain 0 on
++		subsystemid 0x1028 0x0233 inherit
++	end
++end
+-- 
+2.46.1
+
diff --git a/config/coreboot/default/patches/0063-mb-dell-gm45_latitudes-Add-E4300-variant.patch b/config/coreboot/default/patches/0063-mb-dell-gm45_latitudes-Add-E4300-variant.patch
new file mode 100644
index 00000000..5cf3ea57
--- /dev/null
+++ b/config/coreboot/default/patches/0063-mb-dell-gm45_latitudes-Add-E4300-variant.patch
@@ -0,0 +1,332 @@
+From f8c8ab28f22c90e4104b272cb33c890d6fa1e940 Mon Sep 17 00:00:00 2001
+From: Nicholas Chin <nic.c3.14@gmail.com>
+Date: Thu, 26 Sep 2024 19:51:25 -0600
+Subject: [PATCH 63/63] mb/dell/gm45_latitudes: Add E4300 variant
+
+Change-Id: I0f2059501b11be103187e3ce1a7c04ab85ae63d2
+Signed-off-by: Nicholas Chin <nic.c3.14@gmail.com>
+---
+ src/mainboard/dell/gm45_latitude/Kconfig      |   5 +
+ src/mainboard/dell/gm45_latitude/Kconfig.name |   3 +
+ .../gm45_latitude/variants/e4300/data.vbt     | Bin 0 -> 3881 bytes
+ .../variants/e4300/gma-mainboard.ads          |  17 +++
+ .../dell/gm45_latitude/variants/e4300/gpio.c  | 138 ++++++++++++++++++
+ .../gm45_latitude/variants/e4300/hda_verb.c   |  37 +++++
+ .../variants/e4300/overridetree.cb            |  10 ++
+ 7 files changed, 210 insertions(+)
+ create mode 100644 src/mainboard/dell/gm45_latitude/variants/e4300/data.vbt
+ create mode 100644 src/mainboard/dell/gm45_latitude/variants/e4300/gma-mainboard.ads
+ create mode 100644 src/mainboard/dell/gm45_latitude/variants/e4300/gpio.c
+ create mode 100644 src/mainboard/dell/gm45_latitude/variants/e4300/hda_verb.c
+ create mode 100644 src/mainboard/dell/gm45_latitude/variants/e4300/overridetree.cb
+
+diff --git a/src/mainboard/dell/gm45_latitude/Kconfig b/src/mainboard/dell/gm45_latitude/Kconfig
+index ba76fb6e8c..144f9bcdf0 100644
+--- a/src/mainboard/dell/gm45_latitude/Kconfig
++++ b/src/mainboard/dell/gm45_latitude/Kconfig
+@@ -21,6 +21,9 @@ config BOARD_DELL_GM45_LATITUDE_COMMON
+ config BOARD_DELL_E6400
+ 	select BOARD_DELL_GM45_LATITUDE_COMMON
+ 
++config BOARD_DELL_E4300
++	select BOARD_DELL_GM45_LATITUDE_COMMON
++
+ if BOARD_DELL_GM45_LATITUDE_COMMON
+ 
+ config INTEL_GMA_DPLL_REF_FREQ
+@@ -31,12 +34,14 @@ config MAINBOARD_DIR
+ 
+ config MAINBOARD_PART_NUMBER
+ 	default "Latitude E6400" if BOARD_DELL_E6400
++	default "Latitude E4300" if BOARD_DELL_E4300
+ 
+ config OVERRIDE_DEVICETREE
+ 	default "variants/\$(CONFIG_VARIANT_DIR)/overridetree.cb"
+ 
+ config VARIANT_DIR
+ 	default "e6400" if BOARD_DELL_E6400
++	default "e4300" if BOARD_DELL_E4300
+ 
+ config USBDEBUG_HCD_INDEX
+ 	default 1
+diff --git a/src/mainboard/dell/gm45_latitude/Kconfig.name b/src/mainboard/dell/gm45_latitude/Kconfig.name
+index aefe777109..4dc95f46be 100644
+--- a/src/mainboard/dell/gm45_latitude/Kconfig.name
++++ b/src/mainboard/dell/gm45_latitude/Kconfig.name
+@@ -1,4 +1,7 @@
+ ## SPDX-License-Identifier: GPL-2.0-only
+ 
++config BOARD_DELL_E4300
++	bool "Latitude E4300"
++
+ config BOARD_DELL_E6400
+ 	bool "Latitude E6400"
+diff --git a/src/mainboard/dell/gm45_latitude/variants/e4300/data.vbt b/src/mainboard/dell/gm45_latitude/variants/e4300/data.vbt
+new file mode 100644
+index 0000000000000000000000000000000000000000..fa2f3db13f688b5687df16a155781d8674ea26f3
+GIT binary patch
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+z7@f;LJ+ZPlo=?}4PvMm&OKLGLZ0h1&n7U8@9GP~;8!wz(OqQ<s6e;@8hfYU0ht*9>
+zGh%f}_&(hXOZrW-WCWJVw`DdrczV_sXGaOvzjt%F!O;{7J-K<j&AXad#XeO8mgw(v
+z_Gj1VBJZIpZ<>`tJBTNGZHe^T`VrkY0pv~u^?l~DG9UD8p8(692<oYlGx5_cte6LX
+JE5(FU=`RLB=-&VU
+
+literal 0
+HcmV?d00001
+
+diff --git a/src/mainboard/dell/gm45_latitude/variants/e4300/gma-mainboard.ads b/src/mainboard/dell/gm45_latitude/variants/e4300/gma-mainboard.ads
+new file mode 100644
+index 0000000000..89b81b3d69
+--- /dev/null
++++ b/src/mainboard/dell/gm45_latitude/variants/e4300/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, -- dock DP
++      Analog, -- mainboard VGA
++      LVDS,
++      others => Disabled);
++
++end GMA.Mainboard;
+diff --git a/src/mainboard/dell/gm45_latitude/variants/e4300/gpio.c b/src/mainboard/dell/gm45_latitude/variants/e4300/gpio.c
+new file mode 100644
+index 0000000000..b50f8da0b5
+--- /dev/null
++++ b/src/mainboard/dell/gm45_latitude/variants/e4300/gpio.c
+@@ -0,0 +1,138 @@
++/* SPDX-License-Identifier: GPL-2.0-only */
++
++#include <southbridge/intel/common/gpio.h>
++
++static const struct pch_gpio_set1 pch_gpio_set1_mode = {
++	.gpio0  = GPIO_MODE_NATIVE,
++	.gpio1  = GPIO_MODE_GPIO,
++	.gpio2  = GPIO_MODE_GPIO,
++	.gpio3  = GPIO_MODE_GPIO,
++	.gpio4  = GPIO_MODE_GPIO,
++	.gpio5  = GPIO_MODE_GPIO,
++	.gpio6  = GPIO_MODE_GPIO,
++	.gpio7  = GPIO_MODE_GPIO,
++	.gpio8  = GPIO_MODE_GPIO,
++	.gpio9  = GPIO_MODE_NATIVE,
++	.gpio10 = GPIO_MODE_NATIVE,
++	.gpio11 = GPIO_MODE_NATIVE,
++	.gpio12 = GPIO_MODE_NATIVE,
++	.gpio13 = GPIO_MODE_GPIO,
++	.gpio14 = GPIO_MODE_GPIO,
++	.gpio15 = GPIO_MODE_NATIVE,
++	.gpio16 = GPIO_MODE_NATIVE,
++	.gpio17 = GPIO_MODE_GPIO,
++	.gpio18 = GPIO_MODE_GPIO,
++	.gpio19 = GPIO_MODE_GPIO,
++	.gpio20 = GPIO_MODE_GPIO,
++	.gpio21 = GPIO_MODE_GPIO,
++	.gpio22 = GPIO_MODE_GPIO,
++	.gpio23 = GPIO_MODE_NATIVE,
++	.gpio24 = GPIO_MODE_GPIO,
++	.gpio25 = GPIO_MODE_NATIVE,
++	.gpio26 = GPIO_MODE_NATIVE,
++	.gpio27 = GPIO_MODE_GPIO,
++	.gpio28 = GPIO_MODE_GPIO,
++	.gpio29 = GPIO_MODE_NATIVE,
++	.gpio30 = GPIO_MODE_NATIVE,
++	.gpio31 = GPIO_MODE_NATIVE,
++};
++
++static const struct pch_gpio_set1 pch_gpio_set1_direction = {
++	.gpio1  = GPIO_DIR_INPUT,
++	.gpio2  = GPIO_DIR_INPUT,
++	.gpio3  = GPIO_DIR_INPUT,
++	.gpio4  = GPIO_DIR_INPUT,
++	.gpio5  = GPIO_DIR_INPUT,
++	.gpio6  = GPIO_DIR_INPUT,
++	.gpio7  = GPIO_DIR_INPUT,
++	.gpio8  = GPIO_DIR_INPUT,
++	.gpio13 = GPIO_DIR_INPUT,
++	.gpio14 = GPIO_DIR_INPUT,
++	.gpio17 = GPIO_DIR_INPUT,
++	.gpio18 = GPIO_DIR_INPUT,
++	.gpio19 = GPIO_DIR_INPUT,
++	.gpio20 = GPIO_DIR_INPUT,
++	.gpio21 = GPIO_DIR_INPUT,
++	.gpio22 = GPIO_DIR_INPUT,
++	.gpio24 = GPIO_DIR_INPUT,
++	.gpio27 = GPIO_DIR_INPUT,
++	.gpio28 = GPIO_DIR_INPUT,
++};
++
++static const struct pch_gpio_set1 pch_gpio_set1_level = {
++};
++
++static const struct pch_gpio_set1 pch_gpio_set1_blink = {
++};
++
++static const struct pch_gpio_set1 pch_gpio_set1_invert = {
++	.gpio1  = GPIO_INVERT,
++	.gpio7  = GPIO_INVERT,
++	.gpio8  = GPIO_INVERT,
++};
++
++static const struct pch_gpio_set2 pch_gpio_set2_mode = {
++	.gpio32 = GPIO_MODE_NATIVE,
++	.gpio33 = GPIO_MODE_GPIO,
++	.gpio34 = GPIO_MODE_GPIO,
++	.gpio35 = GPIO_MODE_NATIVE,
++	.gpio36 = GPIO_MODE_GPIO,
++	.gpio37 = GPIO_MODE_GPIO,
++	.gpio38 = GPIO_MODE_GPIO,
++	.gpio39 = GPIO_MODE_GPIO,
++	.gpio40 = GPIO_MODE_NATIVE,
++	.gpio41 = GPIO_MODE_NATIVE,
++	.gpio42 = GPIO_MODE_NATIVE,
++	.gpio43 = GPIO_MODE_NATIVE,
++	.gpio44 = GPIO_MODE_NATIVE,
++	.gpio45 = GPIO_MODE_NATIVE,
++	.gpio46 = GPIO_MODE_NATIVE,
++	.gpio47 = GPIO_MODE_NATIVE,
++	.gpio48 = GPIO_MODE_GPIO,
++	.gpio49 = GPIO_MODE_GPIO,
++	.gpio50 = GPIO_MODE_NATIVE,
++	.gpio51 = GPIO_MODE_NATIVE,
++	.gpio52 = GPIO_MODE_GPIO,
++	.gpio53 = GPIO_MODE_GPIO,
++	.gpio54 = GPIO_MODE_NATIVE,
++	.gpio55 = GPIO_MODE_NATIVE,
++	.gpio56 = GPIO_MODE_GPIO,
++	.gpio57 = GPIO_MODE_GPIO,
++	.gpio58 = GPIO_MODE_NATIVE,
++	.gpio59 = GPIO_MODE_NATIVE,
++	.gpio60 = GPIO_MODE_GPIO,
++};
++
++static const struct pch_gpio_set2 pch_gpio_set2_direction = {
++	.gpio33 = GPIO_DIR_INPUT,
++	.gpio34 = GPIO_DIR_INPUT,
++	.gpio36 = GPIO_DIR_INPUT,
++	.gpio37 = GPIO_DIR_INPUT,
++	.gpio38 = GPIO_DIR_INPUT,
++	.gpio39 = GPIO_DIR_INPUT,
++	.gpio48 = GPIO_DIR_INPUT,
++	.gpio49 = GPIO_DIR_INPUT,
++	.gpio52 = GPIO_DIR_INPUT,
++	.gpio53 = GPIO_DIR_INPUT,
++	.gpio56 = GPIO_DIR_INPUT,
++	.gpio57 = GPIO_DIR_INPUT,
++	.gpio60 = GPIO_DIR_INPUT,
++};
++
++static const struct pch_gpio_set2 pch_gpio_set2_level = {
++};
++
++const struct pch_gpio_map mainboard_gpio_map = {
++	.set1 = {
++		.mode      = &pch_gpio_set1_mode,
++		.direction = &pch_gpio_set1_direction,
++		.level     = &pch_gpio_set1_level,
++		.blink     = &pch_gpio_set1_blink,
++		.invert    = &pch_gpio_set1_invert,
++	},
++	.set2 = {
++		.mode      = &pch_gpio_set2_mode,
++		.direction = &pch_gpio_set2_direction,
++		.level     = &pch_gpio_set2_level,
++	},
++};
+diff --git a/src/mainboard/dell/gm45_latitude/variants/e4300/hda_verb.c b/src/mainboard/dell/gm45_latitude/variants/e4300/hda_verb.c
+new file mode 100644
+index 0000000000..a9948a93dd
+--- /dev/null
++++ b/src/mainboard/dell/gm45_latitude/variants/e4300/hda_verb.c
+@@ -0,0 +1,37 @@
++/* SPDX-License-Identifier: GPL-2.0-only */
++
++#include <device/azalia_device.h>
++
++const u32 cim_verb_data[] = {
++	/* coreboot specific header */
++	0x111d76b2, /* IDT 92HD71B7X */
++	0x1028024d, /* Subsystem ID */
++	13,	    /* Number of entries */
++
++	/* Pin Widget Verb Table */
++
++	AZALIA_PIN_CFG(0, 0x0a, 0x0421101f),
++	AZALIA_PIN_CFG(0, 0x0b, 0x04a11021),
++	AZALIA_PIN_CFG(0, 0x0c, 0x40f000f0),
++	AZALIA_PIN_CFG(0, 0x0d, 0x90170110),
++	AZALIA_PIN_CFG(0, 0x0e, 0x23a1102e),
++	AZALIA_PIN_CFG(0, 0x0f, 0x23011050),
++	AZALIA_PIN_CFG(0, 0x14, 0x40f000f2),
++	AZALIA_PIN_CFG(0, 0x18, 0x90a601a0),
++	AZALIA_PIN_CFG(0, 0x19, 0x40f000f4),
++	AZALIA_PIN_CFG(0, 0x1e, 0x40f000f5),
++	AZALIA_PIN_CFG(0, 0x1f, 0x40f000f6),
++	AZALIA_PIN_CFG(0, 0x20, 0x40f000f7),
++	AZALIA_PIN_CFG(0, 0x27, 0x40f000f0),
++};
++
++const u32 pc_beep_verbs[] = {
++	0x00170500, /* power up codec */
++	0x00d70500, /* power up speakers */
++	0x00d70102, /* select mixer (input 0x2) for speakers */
++	0x00d70740, /* enable speakers output */
++	0x02770720, /* enable beep input */
++	0x01737217, /* unmute beep (mixer's input 0x2), set amp 0dB */
++	0x00d37000, /* unmute speakers */
++};
++AZALIA_ARRAY_SIZES;
+diff --git a/src/mainboard/dell/gm45_latitude/variants/e4300/overridetree.cb b/src/mainboard/dell/gm45_latitude/variants/e4300/overridetree.cb
+new file mode 100644
+index 0000000000..20dfa245fb
+--- /dev/null
++++ b/src/mainboard/dell/gm45_latitude/variants/e4300/overridetree.cb
+@@ -0,0 +1,10 @@
++## SPDX-License-Identifier: GPL-2.0-or-later
++
++chip northbridge/intel/gm45
++	device domain 0 on
++		subsystemid 0x1028 0x024d inherit
++		chip southbridge/intel/i82801ix
++			device pci 1c.2 off end # PCIe Port #3
++		end
++	end
++end
+-- 
+2.46.1
+