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authorLeah Rowe <leah@libreboot.org>2025-07-14 01:48:35 +0100
committerLeah Rowe <leah@libreboot.org>2025-07-14 03:19:31 +0100
commit32dfdfbb01b84bb9c058e9b84305f15a14d4e231 (patch)
tree77ab0a8f21a86ecf6728edd29e571310ce1a30a7 /config/coreboot/default/patches/0028-mb-lenovo-Add-ThinkPad-T480-and-ThinkPad-T480s.patch
parent122d009af149b3af83176fcf77a962bdc8b52d64 (diff)
coreboot: rev 8b52167a9f 13 July 2025, rebase t480
coreboot/default: update t480 patches to set 38 see: https://review.coreboot.org/c/coreboot/+/83274/38 I was previously using: https://review.coreboot.org/c/coreboot/+/83274/25 Matt DeViller aka MrChromeBox, recently took over the patch set, tidying up and re-factoring the code so that it's more suitable for upstream. Several hacky behaviours were removed, for example the MEC1663 code is now its own code in coreboot, rather than being bolted onto the H8s code. Certain T480-specific changes made to global parts of the coreboot code are now done only on the tree itself. Mate Kukri has also tested Matt's recent updates. More testing still needed on Nvidia dGPU models, which never worked before anyway; Intel GPU models should still work. Thermas zone handling is also improved. See patch: https://review.coreboot.org/c/coreboot/+/88415/1 https://review.coreboot.org/c/coreboot/+/88416/2 Functionally, this is mostly the same as before. As I said, Matt has focused on code cleanup, so that the board can be properly upstreamed. Hopefully this will be merged soon, in coreboot-main. Besides this, the following upstream changes were imported: * 8b52167a9f arch/x86: Add support for cooperative multitasking on x86_64 * 569b7a8861 Docs/releases: Finalize 25.06 release notes * 5db8bf0cfa mb/trulo/var/pujjolo: Enable USB3 WWAN device * e013c9586c mb/trulo/var/pujjolo: Modify mipi camera parameters * 7b8520ab69 mb/trulo/var/pujjolo: Update fingerprint enable pin status * f74027d5ae mb/google/nissa/var/craask: Add elan touchscreen support * 396a883a0c mb/hp/snb_ivb_desktops: Include PS/2 controller ASL code for MS Windows * 18c067d392 mb/google/fatcat/var/kinmen: Add Synaptics touchpad * 2f5b384ba5 soc/mediatek/mt8189: Enable EARLY_MMU_INIT to improve boot time * d5bce8c420 mb/hp: Add HP 260 G1 DM Business PC (Haswell) * 48c6f66fa4 mb/google/ocelot: Update TPM_TIS_ACPI_INTERRUPT value in Kconfig * 0660fe50de mb/google/ocelot: Update GPE configuration * 5b3063802e mb/google/fatcat/var/kinmen: Fix touchscreen IRQ setting * 6c4e502fdd mb/google/nissa/var/pujjocento: Reduce PL4 to 38W with no battery * 6e92554ab6 mb/trulo/var/pujjolo: Modify FW_CONFIG for mipi camera * 4f5f75da34 mb/trulo/var/pujjolo: Correct USB3 Type-A OC pins * a1dfd39e04 mb/google/fatcat/var/kinmen: Add AUDIO_UNKNOWN and probe for ALC721 * 306544b427 mb/google/fatcat/var/francka: Add AUDIO_UNKNOWN and audio probes * edf47d44cd mb/google/fatcat/var/fatcat: Disable Audio for invalid Audio FW_CONFIG * 454079c3bc lib/cbfs: Ensure cache buffer alignment in ramstage * 0ef670a66a mb/google/ocelot/var/ocelot: Configure FPS related changes * 6ab37f0e0e mb/google/ocelot/var/ocelot: Add FW_CONFIG for Finger Print * 3f61df24d5 mb/google/ocelot/var/ocelot: Add FW_CONFIG for Storage * bb95a26cda mb/google/ocelot/var/ocelot: Add FW_CONFIG for WiFi * 410b3c697f mb/google/ocelot/var/ocelot: Add FW_CONIG for ISH * afaf4c3d7b mb/google/brya/variants/pujjolo: Update ISH GPIOs and add ISH firmware name * f6de6f8933 mb/google/fatcat: Drop redundant SNDW GPIO mapping * 584fdd6572 soc/mediatek/mt8196: Remove redundant bootblock.c from Makefile.mk * 24ea6937f2 soc/intel/apollolake: Add the Kconfig options for IFWI Boot Profile * c68645cd88 util/supermicro: Fix mem leak in get_line_as_int error conditions * 05396238da libpayload/drivers: Fix mem-leak in cbmem_console error condition * 1219981177 drivers/emu/qemu: Add a comment about fw_cfg assumptions * d866e72b3a mb/google/fatcat/var/kinmen: Set CRFP to use GPIO for status * 4367daae20 drivers/spi: Add option to generate proper PowerResource _STA * 03c331399c mb/google/nissa/var/craask: Add focaltech touchscreen support * b3d7c40fb5 mb/siemens/mc_rpl: Remove code for board_id * 5de16ed1b8 mb/siemens/mc_rpl: Remove unused embedded controller code * a1067ec6de mb/siemens/mc_rpl: Remove unneeded code to select a VBT name in CBFS * 463cda84d2 mb/siemens/mc_rpl: Remove unused Type-C data definition * dcbe591201 mb/siemens/mc_rpl: Use SPD data from HWInfo instead of from CBFS * 6c059f8af3 IVB mainboards: Drop 1024M option for gfx_uma_size * 3b61dbaa06 mb/asus/p8z77-m_pro: Remove incorrect gfx_uma_size options * 2b7115b139 mb/hp/snb_ivb_desktops: Add gfx_uma_size options up to 512MB * d99769bbde mb/hp/snb_ivb_desktops/variants: enable 4th sata port on tested models * 95784dbafb mb/google/ocelot/var/ocelot: Add FW_CONFIG for Audio * f323adb19f soc/mediatek/mt8189: Increase SPI NOR clock rate from 26MHz to 52MHz * 689af47b52 commonlib: Add pvmfw related timestamps * f1d06a5ad4 soc/intel/common/block/memory: Provide a way to use SPD data from memory * 11b1dc0a97 Reapply "util/cbmem: Consolidate CBMEM and coreboot table access" * 13f1c6118e Documentation: Update cbmem.md with more information * 07267d19ce arch/x86/postcar_loader: Add comment line for reloc_params assignment * e94ac6e655 mb/google/nissa/var/pujjocento: Reduce PL4 to 38 W with no battery * 2eaec1b53a sbom: Fix build with merged bootblock and romstage * 267f08dafd MAINTAINERS: Add KunYi Chen as maintainer for LattePanda Mu Signed-off-by: Leah Rowe <leah@libreboot.org>
Diffstat (limited to 'config/coreboot/default/patches/0028-mb-lenovo-Add-ThinkPad-T480-and-ThinkPad-T480s.patch')
-rw-r--r--config/coreboot/default/patches/0028-mb-lenovo-Add-ThinkPad-T480-and-ThinkPad-T480s.patch2232
1 files changed, 0 insertions, 2232 deletions
diff --git a/config/coreboot/default/patches/0028-mb-lenovo-Add-ThinkPad-T480-and-ThinkPad-T480s.patch b/config/coreboot/default/patches/0028-mb-lenovo-Add-ThinkPad-T480-and-ThinkPad-T480s.patch
deleted file mode 100644
index 3b40298f..00000000
--- a/config/coreboot/default/patches/0028-mb-lenovo-Add-ThinkPad-T480-and-ThinkPad-T480s.patch
+++ /dev/null
@@ -1,2232 +0,0 @@
-From a2f4492e8680d96f328846e3eba85d5aebec8d09 Mon Sep 17 00:00:00 2001
-From: Mate Kukri <km@mkukri.xyz>
-Date: Tue, 31 Dec 2024 22:49:15 +0000
-Subject: [PATCH 28/41] mb/lenovo: Add ThinkPad T480 and ThinkPad T480s
-
-These machine have BootGuard fused and requires deguard to
-boot coreboot.
-
-Known issues:
-- Alpine Ridge Thunderbolt 3 controller does not work
-- Some Fn+F{1-12} keys aren't handled correctly
-- Nvidia dGPU is finicky
- - Needs option ROM
- - Power enable code is buggy
- - Nouveau only works on linux 6.8-6.9
-- Headphone jack isn't detected as plugged in despite correct verbs
-
-Thanks to Leah Rowe for helping with the T480s.
-
-Signed-off-by: Mate Kukri <km@mkukri.xyz>
-Change-Id: I19d421412c771c1f242f6ff39453f824fa866163
----
- src/device/pci_rom.c | 4 +-
- src/ec/lenovo/h8/acpi/ec.asl | 2 +-
- src/ec/lenovo/h8/bluetooth.c | 6 +-
- src/ec/lenovo/h8/wwan.c | 6 +-
- src/mainboard/lenovo/sklkbl_thinkpad/Kconfig | 57 +++++
- .../lenovo/sklkbl_thinkpad/Kconfig.name | 7 +
- .../lenovo/sklkbl_thinkpad/Makefile.mk | 73 +++++++
- .../lenovo/sklkbl_thinkpad/acpi/ec.asl | 12 ++
- .../lenovo/sklkbl_thinkpad/acpi/superio.asl | 3 +
- .../lenovo/sklkbl_thinkpad/bootblock.c | 60 ++++++
- .../lenovo/sklkbl_thinkpad/devicetree.cb | 71 ++++++
- src/mainboard/lenovo/sklkbl_thinkpad/dsdt.asl | 33 +++
- src/mainboard/lenovo/sklkbl_thinkpad/ec.c | 153 +++++++++++++
- src/mainboard/lenovo/sklkbl_thinkpad/ec.h | 99 +++++++++
- src/mainboard/lenovo/sklkbl_thinkpad/gpio.h | 8 +
- .../lenovo/sklkbl_thinkpad/ramstage.c | 105 +++++++++
- .../sklkbl_thinkpad/variants/t480/data.vbt | Bin 0 -> 4106 bytes
- .../variants/t480/gma-mainboard.ads | 19 ++
- .../sklkbl_thinkpad/variants/t480/gpio.c | 203 ++++++++++++++++++
- .../sklkbl_thinkpad/variants/t480/hda_verb.c | 90 ++++++++
- .../variants/t480/memory_init_params.c | 20 ++
- .../variants/t480/overridetree.cb | 103 +++++++++
- .../sklkbl_thinkpad/variants/t480s/data.vbt | Bin 0 -> 4106 bytes
- .../variants/t480s/gma-mainboard.ads | 19 ++
- .../sklkbl_thinkpad/variants/t480s/gpio.c | 199 +++++++++++++++++
- .../sklkbl_thinkpad/variants/t480s/hda_verb.c | 90 ++++++++
- .../variants/t480s/memory_init_params.c | 44 ++++
- .../variants/t480s/overridetree.cb | 103 +++++++++
- .../variants/t480s/spd/spd_0.bin | Bin 0 -> 512 bytes
- .../variants/t480s/spd/spd_1.bin | Bin 0 -> 512 bytes
- .../variants/t480s/spd/spd_10.bin | Bin 0 -> 512 bytes
- .../variants/t480s/spd/spd_11.bin | Bin 0 -> 512 bytes
- .../variants/t480s/spd/spd_12.bin | Bin 0 -> 512 bytes
- .../variants/t480s/spd/spd_13.bin | Bin 0 -> 512 bytes
- .../variants/t480s/spd/spd_14.bin | Bin 0 -> 512 bytes
- .../variants/t480s/spd/spd_15.bin | Bin 0 -> 512 bytes
- .../variants/t480s/spd/spd_16.bin | Bin 0 -> 512 bytes
- .../variants/t480s/spd/spd_17.bin | Bin 0 -> 512 bytes
- .../variants/t480s/spd/spd_18.bin | Bin 0 -> 512 bytes
- .../variants/t480s/spd/spd_19.bin | Bin 0 -> 512 bytes
- .../variants/t480s/spd/spd_2.bin | Bin 0 -> 512 bytes
- .../variants/t480s/spd/spd_20.bin | Bin 0 -> 512 bytes
- .../variants/t480s/spd/spd_3.bin | Bin 0 -> 512 bytes
- .../variants/t480s/spd/spd_4.bin | Bin 0 -> 512 bytes
- .../variants/t480s/spd/spd_5.bin | Bin 0 -> 512 bytes
- .../variants/t480s/spd/spd_6.bin | Bin 0 -> 512 bytes
- .../variants/t480s/spd/spd_7.bin | Bin 0 -> 512 bytes
- .../variants/t480s/spd/spd_8.bin | Bin 0 -> 512 bytes
- .../variants/t480s/spd/spd_9.bin | Bin 0 -> 512 bytes
- 49 files changed, 1583 insertions(+), 6 deletions(-)
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/Kconfig
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/Kconfig.name
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/Makefile.mk
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/acpi/ec.asl
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/acpi/superio.asl
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/bootblock.c
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/devicetree.cb
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/dsdt.asl
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/ec.c
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/ec.h
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/gpio.h
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/ramstage.c
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/variants/t480/data.vbt
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/variants/t480/gma-mainboard.ads
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/variants/t480/gpio.c
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/variants/t480/hda_verb.c
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/variants/t480/memory_init_params.c
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/variants/t480/overridetree.cb
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/data.vbt
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/gma-mainboard.ads
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/gpio.c
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/hda_verb.c
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/memory_init_params.c
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/overridetree.cb
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/spd/spd_0.bin
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/spd/spd_1.bin
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/spd/spd_10.bin
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/spd/spd_11.bin
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/spd/spd_12.bin
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/spd/spd_13.bin
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/spd/spd_14.bin
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/spd/spd_15.bin
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/spd/spd_16.bin
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/spd/spd_17.bin
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/spd/spd_18.bin
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/spd/spd_19.bin
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/spd/spd_2.bin
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/spd/spd_20.bin
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/spd/spd_3.bin
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/spd/spd_4.bin
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/spd/spd_5.bin
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/spd/spd_6.bin
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/spd/spd_7.bin
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/spd/spd_8.bin
- create mode 100644 src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/spd/spd_9.bin
-
-diff --git a/src/device/pci_rom.c b/src/device/pci_rom.c
-index dc41ef14ce..bba98d9dea 100644
---- a/src/device/pci_rom.c
-+++ b/src/device/pci_rom.c
-@@ -396,14 +396,16 @@ void pci_rom_ssdt(const struct device *device)
- rom = cbrom;
- }
-
-+#if 0
- const char *scope = acpi_device_path(device);
- if (!scope) {
- printk(BIOS_ERR, "%s: Missing ACPI scope\n", dev_path(device));
- return;
- }
-+#endif
-
- /* write _ROM method */
-- acpigen_write_scope(scope);
-+ acpigen_write_scope("\\_SB.PCI0.RP01.PEGP");
- acpigen_write_rom((void *)rom, rom->size * 512);
- acpigen_pop_len(); /* pop scope */
- }
-diff --git a/src/ec/lenovo/h8/acpi/ec.asl b/src/ec/lenovo/h8/acpi/ec.asl
-index bc54d3b422..8f4a8e1986 100644
---- a/src/ec/lenovo/h8/acpi/ec.asl
-+++ b/src/ec/lenovo/h8/acpi/ec.asl
-@@ -331,7 +331,7 @@ Device(EC)
- #include "sleepbutton.asl"
- #include "lid.asl"
- #include "beep.asl"
--#include "thermal.asl"
-+//#include "thermal.asl"
- #include "systemstatus.asl"
- #include "thinkpad.asl"
- }
-diff --git a/src/ec/lenovo/h8/bluetooth.c b/src/ec/lenovo/h8/bluetooth.c
-index 16fc8dce39..be71a24ced 100644
---- a/src/ec/lenovo/h8/bluetooth.c
-+++ b/src/ec/lenovo/h8/bluetooth.c
-@@ -1,6 +1,6 @@
- /* SPDX-License-Identifier: GPL-2.0-only */
-
--#include <southbridge/intel/common/gpio.h>
-+// #include <southbridge/intel/common/gpio.h>
- #include <console/console.h>
- #include <device/device.h>
- #include <ec/acpi/ec.h>
-@@ -28,16 +28,18 @@ bool h8_has_bdc(const struct device *dev)
- {
- struct ec_lenovo_h8_config *conf = dev->chip_info;
-
-- if (!conf->has_bdc_detection) {
-+ if (1 || !conf->has_bdc_detection) {
- printk(BIOS_INFO, "H8: BDC detection not implemented. "
- "Assuming BDC installed\n");
- return true;
- }
-
-+#if 0
- if (get_gpio(conf->bdc_gpio_num) == conf->bdc_gpio_lvl) {
- printk(BIOS_INFO, "H8: BDC installed\n");
- return true;
- }
-+#endif
-
- printk(BIOS_INFO, "H8: BDC not installed\n");
- return false;
-diff --git a/src/ec/lenovo/h8/wwan.c b/src/ec/lenovo/h8/wwan.c
-index 685886fcce..5cdcf77406 100644
---- a/src/ec/lenovo/h8/wwan.c
-+++ b/src/ec/lenovo/h8/wwan.c
-@@ -1,6 +1,6 @@
- /* SPDX-License-Identifier: GPL-2.0-only */
-
--#include <southbridge/intel/common/gpio.h>
-+// #include <southbridge/intel/common/gpio.h>
- #include <console/console.h>
- #include <device/device.h>
- #include <ec/acpi/ec.h>
-@@ -26,16 +26,18 @@ bool h8_has_wwan(const struct device *dev)
- {
- struct ec_lenovo_h8_config *conf = dev->chip_info;
-
-- if (!conf->has_wwan_detection) {
-+ if (1 || !conf->has_wwan_detection) {
- printk(BIOS_INFO, "H8: WWAN detection not implemented. "
- "Assuming WWAN installed\n");
- return true;
- }
-
-+#if 0
- if (get_gpio(conf->wwan_gpio_num) == conf->wwan_gpio_lvl) {
- printk(BIOS_INFO, "H8: WWAN installed\n");
- return true;
- }
-+#endif
-
- printk(BIOS_INFO, "H8: WWAN not installed\n");
- return false;
-diff --git a/src/mainboard/lenovo/sklkbl_thinkpad/Kconfig b/src/mainboard/lenovo/sklkbl_thinkpad/Kconfig
-new file mode 100644
-index 0000000000..4998672943
---- /dev/null
-+++ b/src/mainboard/lenovo/sklkbl_thinkpad/Kconfig
-@@ -0,0 +1,57 @@
-+# SPDX-License-Identifier: GPL-2.0-only
-+
-+config BOARD_LENOVO_SKLKBL_THINKPAD_COMMON
-+ bool
-+ select BOARD_ROMSIZE_KB_16384
-+ select EC_LENOVO_H8
-+ select EC_LENOVO_PMH7
-+ select H8_HAS_BAT_THRESHOLDS_IMPL
-+ select H8_HAS_LEDLOGO
-+ select H8_HAS_PRIMARY_FN_KEYS
-+ select HAVE_ACPI_RESUME
-+ select HAVE_ACPI_TABLES
-+ select INTEL_GMA_HAVE_VBT
-+ select INTEL_INT15
-+ select MAINBOARD_HAS_LIBGFXINIT
-+ select MAINBOARD_HAS_TPM2
-+ select MAINBOARD_USES_IFD_GBE_REGION
-+ select MEMORY_MAPPED_TPM
-+ select SOC_INTEL_COMMON_BLOCK_HDA_VERB
-+ select SOC_INTEL_KABYLAKE
-+ select SPD_READ_BY_WORD
-+ select SYSTEM_TYPE_LAPTOP
-+
-+config BOARD_LENOVO_T480
-+ bool
-+ select BOARD_LENOVO_SKLKBL_THINKPAD_COMMON
-+
-+config BOARD_LENOVO_T480S
-+ bool
-+ select BOARD_LENOVO_SKLKBL_THINKPAD_COMMON
-+
-+if BOARD_LENOVO_SKLKBL_THINKPAD_COMMON
-+
-+config MAINBOARD_DIR
-+ default "lenovo/sklkbl_thinkpad"
-+
-+config VARIANT_DIR
-+ default "t480" if BOARD_LENOVO_T480
-+ default "t480s" if BOARD_LENOVO_T480S
-+
-+config OVERRIDE_DEVICETREE
-+ default "variants/\$(CONFIG_VARIANT_DIR)/overridetree.cb"
-+
-+config MAINBOARD_PART_NUMBER
-+ default "T480" if BOARD_LENOVO_T480
-+ default "T480s" if BOARD_LENOVO_T480S
-+
-+config CBFS_SIZE
-+ default 0x900000
-+
-+config DIMM_MAX
-+ default 2
-+
-+config DIMM_SPD_SIZE
-+ default 512 # DDR4
-+
-+endif
-diff --git a/src/mainboard/lenovo/sklkbl_thinkpad/Kconfig.name b/src/mainboard/lenovo/sklkbl_thinkpad/Kconfig.name
-new file mode 100644
-index 0000000000..abc273f387
---- /dev/null
-+++ b/src/mainboard/lenovo/sklkbl_thinkpad/Kconfig.name
-@@ -0,0 +1,7 @@
-+# SPDX-License-Identifier: GPL-2.0-only
-+
-+config BOARD_LENOVO_T480
-+ bool "ThinkPad T480"
-+
-+config BOARD_LENOVO_T480S
-+ bool "ThinkPad T480s"
-diff --git a/src/mainboard/lenovo/sklkbl_thinkpad/Makefile.mk b/src/mainboard/lenovo/sklkbl_thinkpad/Makefile.mk
-new file mode 100644
-index 0000000000..c308239177
---- /dev/null
-+++ b/src/mainboard/lenovo/sklkbl_thinkpad/Makefile.mk
-@@ -0,0 +1,73 @@
-+## SPDX-License-Identifier: GPL-2.0-only
-+
-+bootblock-y += bootblock.c ec.c
-+
-+romstage-y += variants/$(VARIANT_DIR)/memory_init_params.c
-+
-+ramstage-y += ramstage.c ec.c
-+ramstage-y += variants/$(VARIANT_DIR)/gpio.c variants/$(VARIANT_DIR)/hda_verb.c
-+ramstage-$(CONFIG_MAINBOARD_USE_LIBGFXINIT) += variants/$(VARIANT_DIR)/gma-mainboard.ads
-+
-+cbfs-files-$(CONFIG_BOARD_LENOVO_T480S) += spd_0.bin
-+spd_0.bin-file := variants/$(VARIANT_DIR)/spd/spd_0.bin
-+spd_0.bin-type := raw
-+cbfs-files-$(CONFIG_BOARD_LENOVO_T480S) += spd_1.bin
-+spd_1.bin-file := variants/$(VARIANT_DIR)/spd/spd_1.bin
-+spd_1.bin-type := raw
-+cbfs-files-$(CONFIG_BOARD_LENOVO_T480S) += spd_2.bin
-+spd_2.bin-file := variants/$(VARIANT_DIR)/spd/spd_2.bin
-+spd_2.bin-type := raw
-+cbfs-files-$(CONFIG_BOARD_LENOVO_T480S) += spd_3.bin
-+spd_3.bin-file := variants/$(VARIANT_DIR)/spd/spd_3.bin
-+spd_3.bin-type := raw
-+cbfs-files-$(CONFIG_BOARD_LENOVO_T480S) += spd_4.bin
-+spd_4.bin-file := variants/$(VARIANT_DIR)/spd/spd_4.bin
-+spd_4.bin-type := raw
-+cbfs-files-$(CONFIG_BOARD_LENOVO_T480S) += spd_5.bin
-+spd_5.bin-file := variants/$(VARIANT_DIR)/spd/spd_5.bin
-+spd_5.bin-type := raw
-+cbfs-files-$(CONFIG_BOARD_LENOVO_T480S) += spd_6.bin
-+spd_6.bin-file := variants/$(VARIANT_DIR)/spd/spd_6.bin
-+spd_6.bin-type := raw
-+cbfs-files-$(CONFIG_BOARD_LENOVO_T480S) += spd_7.bin
-+spd_7.bin-file := variants/$(VARIANT_DIR)/spd/spd_7.bin
-+spd_7.bin-type := raw
-+cbfs-files-$(CONFIG_BOARD_LENOVO_T480S) += spd_8.bin
-+spd_8.bin-file := variants/$(VARIANT_DIR)/spd/spd_8.bin
-+spd_8.bin-type := raw
-+cbfs-files-$(CONFIG_BOARD_LENOVO_T480S) += spd_9.bin
-+spd_9.bin-file := variants/$(VARIANT_DIR)/spd/spd_9.bin
-+spd_9.bin-type := raw
-+cbfs-files-$(CONFIG_BOARD_LENOVO_T480S) += spd_10.bin
-+spd_10.bin-file := variants/$(VARIANT_DIR)/spd/spd_10.bin
-+spd_10.bin-type := raw
-+cbfs-files-$(CONFIG_BOARD_LENOVO_T480S) += spd_11.bin
-+spd_11.bin-file := variants/$(VARIANT_DIR)/spd/spd_11.bin
-+spd_11.bin-type := raw
-+cbfs-files-$(CONFIG_BOARD_LENOVO_T480S) += spd_12.bin
-+spd_12.bin-file := variants/$(VARIANT_DIR)/spd/spd_12.bin
-+spd_12.bin-type := raw
-+cbfs-files-$(CONFIG_BOARD_LENOVO_T480S) += spd_13.bin
-+spd_13.bin-file := variants/$(VARIANT_DIR)/spd/spd_13.bin
-+spd_13.bin-type := raw
-+cbfs-files-$(CONFIG_BOARD_LENOVO_T480S) += spd_14.bin
-+spd_14.bin-file := variants/$(VARIANT_DIR)/spd/spd_14.bin
-+spd_14.bin-type := raw
-+cbfs-files-$(CONFIG_BOARD_LENOVO_T480S) += spd_15.bin
-+spd_15.bin-file := variants/$(VARIANT_DIR)/spd/spd_15.bin
-+spd_15.bin-type := raw
-+cbfs-files-$(CONFIG_BOARD_LENOVO_T480S) += spd_16.bin
-+spd_16.bin-file := variants/$(VARIANT_DIR)/spd/spd_16.bin
-+spd_16.bin-type := raw
-+cbfs-files-$(CONFIG_BOARD_LENOVO_T480S) += spd_17.bin
-+spd_17.bin-file := variants/$(VARIANT_DIR)/spd/spd_17.bin
-+spd_17.bin-type := raw
-+cbfs-files-$(CONFIG_BOARD_LENOVO_T480S) += spd_18.bin
-+spd_18.bin-file := variants/$(VARIANT_DIR)/spd/spd_18.bin
-+spd_18.bin-type := raw
-+cbfs-files-$(CONFIG_BOARD_LENOVO_T480S) += spd_19.bin
-+spd_19.bin-file := variants/$(VARIANT_DIR)/spd/spd_19.bin
-+spd_19.bin-type := raw
-+cbfs-files-$(CONFIG_BOARD_LENOVO_T480S) += spd_20.bin
-+spd_20.bin-file := variants/$(VARIANT_DIR)/spd/spd_20.bin
-+spd_20.bin-type := raw
-diff --git a/src/mainboard/lenovo/sklkbl_thinkpad/acpi/ec.asl b/src/mainboard/lenovo/sklkbl_thinkpad/acpi/ec.asl
-new file mode 100644
-index 0000000000..3a949a2fca
---- /dev/null
-+++ b/src/mainboard/lenovo/sklkbl_thinkpad/acpi/ec.asl
-@@ -0,0 +1,12 @@
-+/* SPDX-License-Identifier: GPL-2.0-only */
-+
-+#define BRIGHTNESS_UP \_SB.PCI0.GFX0.INCB
-+#define BRIGHTNESS_DOWN \_SB.PCI0.GFX0.DECB
-+#define THINKPAD_EC_GPE 22
-+
-+Name(\TCRT, 100)
-+Name(\TPSV, 90)
-+Name(\FLVL, 0)
-+
-+#include <ec/lenovo/h8/acpi/ec.asl>
-+#include <ec/lenovo/h8/acpi/thinkpad_bat_thresholds_b0.asl>
-diff --git a/src/mainboard/lenovo/sklkbl_thinkpad/acpi/superio.asl b/src/mainboard/lenovo/sklkbl_thinkpad/acpi/superio.asl
-new file mode 100644
-index 0000000000..55b1db5b11
---- /dev/null
-+++ b/src/mainboard/lenovo/sklkbl_thinkpad/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/lenovo/sklkbl_thinkpad/bootblock.c b/src/mainboard/lenovo/sklkbl_thinkpad/bootblock.c
-new file mode 100644
-index 0000000000..fb660dbdfa
---- /dev/null
-+++ b/src/mainboard/lenovo/sklkbl_thinkpad/bootblock.c
-@@ -0,0 +1,60 @@
-+/* SPDX-License-Identifier: GPL-2.0-only */
-+
-+#include <arch/io.h>
-+#include <bootblock_common.h>
-+#include <device/pci.h>
-+#include <soc/pci_devs.h>
-+#include "ec.h"
-+
-+static void configure_uart(uint16_t port, uint16_t iobase, uint8_t irqno)
-+{
-+ microchip_pnp_enter_conf_state(port);
-+
-+ // Select LPC I/F LDN
-+ pnp_write(port, PNP_LDN_SELECT, LDN_LPCIF);
-+ // Write UART BAR
-+ pnp_write_le32(port, LPCIF_BAR_UART, (uint32_t) iobase << 16 | 0x8707);
-+ // Set SIRQ4 to UART
-+ pnp_write(port, LPCIF_SIRQ(irqno), LDN_UART);
-+
-+ // Configure UART LDN
-+ pnp_write(port, PNP_LDN_SELECT, LDN_UART);
-+ pnp_write(port, UART_ACTIVATE, 0x01);
-+ pnp_write(port, UART_CONFIG_SELECT, 0x00);
-+
-+ microchip_pnp_exit_conf_state(port);
-+
-+#ifdef CONFIG_BOARD_LENOVO_T480
-+ // Supply debug unlock key
-+ debug_write_key(DEBUG_RW_KEY_IDX, debug_rw_key);
-+
-+ // Use debug writes to set UART_TX and UART_RX GPIOs
-+ debug_write_dword(0xf0c400 + 0x110, 0x00001000);
-+ debug_write_dword(0xf0c400 + 0x114, 0x00001000);
-+#endif
-+}
-+
-+
-+#define UART_PORT 0x3f8
-+#define UART_IRQ 4
-+
-+void bootblock_mainboard_early_init(void)
-+{
-+ // Tell EC via BIOS Debug Port 1 that the world isn't on fire
-+
-+ // Let the EC know that BIOS code is running
-+ outb(0x11, 0x86);
-+ outb(0x6e, 0x86);
-+
-+ // Enable accesses to EC1 interface
-+ ec0_write(0, ec0_read(0) | 0x20);
-+
-+ // Reset LEDs to power on state
-+ // (Without this warm reboot leaves LEDs off)
-+ ec0_write(0x0c, 0x80);
-+ ec0_write(0x0c, 0x07);
-+ ec0_write(0x0c, 0x8a);
-+
-+ // Setup debug UART
-+ configure_uart(EC_CFG_PORT, UART_PORT, UART_IRQ);
-+}
-diff --git a/src/mainboard/lenovo/sklkbl_thinkpad/devicetree.cb b/src/mainboard/lenovo/sklkbl_thinkpad/devicetree.cb
-new file mode 100644
-index 0000000000..c07d4d53ca
---- /dev/null
-+++ b/src/mainboard/lenovo/sklkbl_thinkpad/devicetree.cb
-@@ -0,0 +1,71 @@
-+# SPDX-License-Identifier: GPL-2.0-only
-+
-+chip soc/intel/skylake
-+ # IGD Displays
-+ register "gfx" = "GMA_STATIC_DISPLAYS(0)"
-+
-+ register "panel_cfg" = "{
-+ .up_delay_ms = 200,
-+ .down_delay_ms = 50,
-+ .cycle_delay_ms = 600,
-+ .backlight_on_delay_ms = 1,
-+ .backlight_off_delay_ms = 200,
-+ .backlight_pwm_hz = 200,
-+ }"
-+
-+ # Power
-+ register "PmConfigSlpS3MinAssert" = "2" # 50ms
-+ register "PmConfigSlpS4MinAssert" = "1" # 1s
-+ register "PmConfigSlpSusMinAssert" = "3" # 500ms
-+ register "PmConfigSlpAMinAssert" = "3" # 2s
-+
-+ device domain 0 on
-+ device ref igpu on end
-+ device ref sa_thermal on end
-+ device ref thermal on end
-+ device ref south_xhci on end
-+ device ref lpc_espi on
-+ register "serirq_mode" = "SERIRQ_CONTINUOUS"
-+
-+ register "gen1_dec" = "0x007c1601"
-+ register "gen2_dec" = "0x000c15e1"
-+
-+ chip ec/lenovo/pmh7
-+ register "backlight_enable" = "true"
-+ register "dock_event_enable" = "true"
-+ device pnp ff.1 on end # dummy
-+ end
-+
-+ chip ec/lenovo/h8
-+ register "beepmask0" = "0x00"
-+ register "beepmask1" = "0x86"
-+ register "config0" = "0xa6"
-+ register "config1" = "0x0d"
-+ register "config2" = "0xa8"
-+ register "config3" = "0xc4"
-+ register "has_keyboard_backlight" = "1"
-+ register "event2_enable" = "0xff"
-+ register "event3_enable" = "0xff"
-+ register "event4_enable" = "0xd0"
-+ register "event5_enable" = "0x3c"
-+ register "event7_enable" = "0x01"
-+ register "event8_enable" = "0x7b"
-+ register "event9_enable" = "0xff"
-+ register "eventc_enable" = "0xff"
-+ register "eventd_enable" = "0xff"
-+ register "evente_enable" = "0x9d"
-+ device pnp ff.2 on # dummy
-+ io 0x60 = 0x62
-+ io 0x62 = 0x66
-+ io 0x64 = 0x1600
-+ io 0x66 = 0x1604
-+ end
-+ end
-+
-+ chip drivers/pc80/tpm
-+ device pnp 0c31.0 on end
-+ end
-+ end
-+ device ref hda on end
-+ end
-+end
-diff --git a/src/mainboard/lenovo/sklkbl_thinkpad/dsdt.asl b/src/mainboard/lenovo/sklkbl_thinkpad/dsdt.asl
-new file mode 100644
-index 0000000000..aa4d4de2a6
---- /dev/null
-+++ b/src/mainboard/lenovo/sklkbl_thinkpad/dsdt.asl
-@@ -0,0 +1,33 @@
-+/* SPDX-License-Identifier: GPL-2.0-only */
-+
-+#include <acpi/acpi.h>
-+DefinitionBlock(
-+ "dsdt.aml",
-+ "DSDT",
-+ ACPI_DSDT_REV_2,
-+ OEM_ID,
-+ ACPI_TABLE_CREATOR,
-+ 0x20110725
-+)
-+{
-+ #include <acpi/dsdt_top.asl>
-+ #include <soc/intel/common/block/acpi/acpi/globalnvs.asl>
-+ #include <cpu/intel/common/acpi/cpu.asl>
-+
-+ Device (\_SB.PCI0)
-+ {
-+ #include <soc/intel/skylake/acpi/systemagent.asl>
-+ #include <soc/intel/skylake/acpi/pch.asl>
-+ #include <drivers/intel/gma/acpi/default_brightness_levels.asl>
-+ }
-+
-+ Scope (\_SB.PCI0.RP01)
-+ {
-+ Device (PEGP)
-+ {
-+ Name (_ADR, Zero)
-+ }
-+ }
-+
-+ #include <southbridge/intel/common/acpi/sleepstates.asl>
-+}
-diff --git a/src/mainboard/lenovo/sklkbl_thinkpad/ec.c b/src/mainboard/lenovo/sklkbl_thinkpad/ec.c
-new file mode 100644
-index 0000000000..adb6a60324
---- /dev/null
-+++ b/src/mainboard/lenovo/sklkbl_thinkpad/ec.c
-@@ -0,0 +1,153 @@
-+/* SPDX-License-Identifier: GPL-2.0-only */
-+
-+#include <arch/io.h>
-+#include "ec.h"
-+
-+#define MICROCHIP_CONFIGURATION_ENTRY_KEY 0x55
-+#define MICROCHIP_CONFIGURATION_EXIT_KEY 0xaa
-+
-+void microchip_pnp_enter_conf_state(uint16_t port)
-+{
-+ outb(MICROCHIP_CONFIGURATION_ENTRY_KEY, port);
-+}
-+
-+void microchip_pnp_exit_conf_state(uint16_t port)
-+{
-+ outb(MICROCHIP_CONFIGURATION_EXIT_KEY, port);
-+}
-+
-+uint8_t pnp_read(uint16_t port, uint8_t index)
-+{
-+ outb(index, port);
-+ return inb(port + 1);
-+}
-+
-+uint32_t pnp_read_le32(uint16_t port, uint8_t index)
-+{
-+ return (uint32_t) pnp_read(port, index) |
-+ (uint32_t) pnp_read(port, index + 1) << 8 |
-+ (uint32_t) pnp_read(port, index + 2) << 16 |
-+ (uint32_t) pnp_read(port, index + 3) << 24;
-+}
-+
-+void pnp_write(uint16_t port, uint8_t index, uint8_t value)
-+{
-+ outb(index, port);
-+ outb(value, port + 1);
-+}
-+
-+void pnp_write_le32(uint16_t port, uint8_t index, uint32_t value)
-+{
-+ pnp_write(port, index, value & 0xff);
-+ pnp_write(port, index + 1, value >> 8 & 0xff);
-+ pnp_write(port, index + 2, value >> 16 & 0xff);
-+ pnp_write(port, index + 3, value >> 24 & 0xff);
-+}
-+
-+static void ecN_clear_out_queue(uint16_t cmd_port, uint16_t data_port)
-+{
-+ while (inb(cmd_port) & EC_OBF)
-+ inb(data_port);
-+}
-+
-+static void ecN_wait_to_send(uint16_t cmd_port, uint16_t data_port)
-+{
-+ while (inb(cmd_port) & EC_IBF)
-+ ;
-+}
-+
-+static void ecN_wait_to_recv(uint16_t cmd_port, uint16_t data_port)
-+{
-+ while (!(inb(cmd_port) & EC_OBF))
-+ ;
-+}
-+
-+uint8_t ecN_read(uint16_t cmd_port, uint16_t data_port, uint8_t addr)
-+{
-+ ecN_clear_out_queue(cmd_port, data_port);
-+ ecN_wait_to_send(cmd_port, data_port);
-+ outb(EC_READ, cmd_port);
-+ ecN_wait_to_send(cmd_port, data_port);
-+ outb(addr, data_port);
-+ ecN_wait_to_recv(cmd_port, data_port);
-+ return inb(data_port);
-+}
-+
-+void ecN_write(uint16_t cmd_port, uint16_t data_port, uint8_t addr, uint8_t val)
-+{
-+ ecN_clear_out_queue(cmd_port, data_port);
-+ ecN_wait_to_send(cmd_port, data_port);
-+ outb(EC_WRITE, cmd_port);
-+ ecN_wait_to_send(cmd_port, data_port);
-+ outb(addr, data_port);
-+ ecN_wait_to_send(cmd_port, data_port);
-+ outb(val, data_port);
-+}
-+
-+uint8_t eeprom_read(uint16_t addr)
-+{
-+ ecN_clear_out_queue(EC2_CMD, EC2_DATA);
-+ ecN_wait_to_send(EC2_CMD, EC2_DATA);
-+ outl(1, EC2_CMD);
-+ ecN_wait_to_send(EC2_CMD, EC2_DATA);
-+ outl(addr, EC2_DATA);
-+ ecN_wait_to_recv(EC2_CMD, EC2_DATA);
-+ return inl(EC2_DATA);
-+}
-+
-+void eeprom_write(uint16_t addr, uint8_t val)
-+{
-+ ecN_clear_out_queue(EC2_CMD, EC2_DATA);
-+ ecN_wait_to_send(EC2_CMD, EC2_DATA);
-+ outl(2, EC2_CMD);
-+ ecN_wait_to_send(EC2_CMD, EC2_DATA);
-+ outl((uint32_t) addr | (uint32_t) val << 16, EC2_DATA);
-+ ecN_wait_to_recv(EC2_CMD, EC2_DATA);
-+ inl(EC2_DATA);
-+}
-+
-+uint16_t debug_loaded_keys(void)
-+{
-+ return (uint16_t) ec0_read(0x87) << 8 | (uint16_t) ec0_read(0x86);
-+}
-+
-+static void debug_cmd(uint8_t cmd)
-+{
-+ ec0_write(EC_DEBUG_CMD, cmd);
-+ while (ec0_read(EC_DEBUG_CMD) & 0x80)
-+ ;
-+}
-+
-+void debug_read_key(uint8_t i, uint8_t *key)
-+{
-+ debug_cmd(0x80 | (i & 0xf));
-+ for (int j = 0; j < 8; ++j)
-+ key[j] = ec0_read(0x3e + j);
-+}
-+
-+void debug_write_key(uint8_t i, const uint8_t *key)
-+{
-+ for (int j = 0; j < 8; ++j)
-+ ec0_write(0x3e + j, key[j]);
-+ debug_cmd(0xc0 | (i & 0xf));
-+}
-+
-+uint32_t debug_read_dword(uint32_t addr)
-+{
-+ ecN_clear_out_queue(EC3_CMD, EC3_DATA);
-+ ecN_wait_to_send(EC3_CMD, EC3_DATA);
-+ outl(addr << 8 | 0xE2, EC3_DATA);
-+ ecN_wait_to_recv(EC3_CMD, EC3_DATA);
-+ return inl(EC3_DATA);
-+}
-+
-+void debug_write_dword(uint32_t addr, uint32_t val)
-+{
-+ ecN_clear_out_queue(EC3_CMD, EC3_DATA);
-+ ecN_wait_to_send(EC3_CMD, EC3_DATA);
-+ outl(addr << 8 | 0xEA, EC3_DATA);
-+ ecN_wait_to_send(EC3_CMD, EC3_DATA);
-+ outl(val, EC3_DATA);
-+}
-+
-+const uint8_t debug_rw_key[8] = { 0x7a, 0x41, 0xb1, 0x49, 0xfe, 0x21, 0x01, 0xcf };
-diff --git a/src/mainboard/lenovo/sklkbl_thinkpad/ec.h b/src/mainboard/lenovo/sklkbl_thinkpad/ec.h
-new file mode 100644
-index 0000000000..d2963c8962
---- /dev/null
-+++ b/src/mainboard/lenovo/sklkbl_thinkpad/ec.h
-@@ -0,0 +1,99 @@
-+/* SPDX-License-Identifier: GPL-2.0-only */
-+
-+#ifndef SKLKBL_THINKPAD_EC_H
-+#define SKLKBL_THINKPAD_EC_H
-+
-+// EC configuration base address
-+#define EC_CFG_PORT 0x4e
-+
-+// Chip global registers
-+#define PNP_LDN_SELECT 0x07
-+# define LDN_UART 0x07
-+# define LDN_LPCIF 0x0c
-+#define EC_DEVICE_ID 0x20
-+#define EC_DEVICE_REV 0x21
-+
-+// LPC I/F registers
-+#define LPCIF_SIRQ(i) (0x40 + (i))
-+
-+#define LPCIF_BAR_CFG 0x60
-+#define LPCIF_BAR_MAILBOX 0x64
-+#define LPCIF_BAR_8042 0x68
-+#define LPCIF_BAR_ACPI_EC0 0x6c
-+#define LPCIF_BAR_ACPI_EC1 0x70
-+#define LPCIF_BAR_ACPI_EC2 0x74
-+#define LPCIF_BAR_ACPI_EC3 0x78
-+#define LPCIF_BAR_ACPI_PM0 0x7c
-+#define LPCIF_BAR_UART 0x80
-+#define LPCIF_BAR_FAST_KYBD 0x84
-+#define LPCIF_BAR_EMBED_FLASH 0x88
-+#define LPCIF_BAR_GP_SPI 0x8c
-+#define LPCIF_BAR_EMI 0x90
-+#define LPCIF_BAR_PMH7 0x94
-+#define LPCIF_BAR_PORT80_DBG0 0x98
-+#define LPCIF_BAR_PORT80_DBG1 0x9c
-+#define LPCIF_BAR_RTC 0xa0
-+
-+// UART registers
-+#define UART_ACTIVATE 0x30
-+#define UART_CONFIG_SELECT 0xf0
-+
-+void microchip_pnp_enter_conf_state(uint16_t port);
-+void microchip_pnp_exit_conf_state(uint16_t port);
-+uint8_t pnp_read(uint16_t port, uint8_t index);
-+uint32_t pnp_read_le32(uint16_t port, uint8_t index);
-+void pnp_write(uint16_t port, uint8_t index, uint8_t value);
-+void pnp_write_le32(uint16_t port, uint8_t index, uint32_t value);
-+
-+#define EC0_CMD 0x0066
-+#define EC0_DATA 0x0062
-+#define EC1_CMD 0x1604
-+#define EC1_DATA 0x1600
-+#define EC2_CMD 0x1634
-+#define EC2_DATA 0x1630
-+#define EC3_CMD 0x161c
-+#define EC3_DATA 0x1618
-+
-+#define EC_OBF (1 << 0)
-+#define EC_IBF (1 << 1)
-+
-+#define EC_READ 0x80
-+#define EC_WRITE 0x81
-+
-+uint8_t ecN_read(uint16_t cmd_port, uint16_t data_port, uint8_t addr);
-+
-+void ecN_write(uint16_t cmd_port, uint16_t data_port, uint8_t addr, uint8_t val);
-+
-+// EC0 and EC1 mostly are useful with the READ/WRITE commands
-+#define ec0_read(addr) ecN_read(EC0_CMD, EC0_DATA, addr)
-+#define ec0_write(addr, val) ecN_write(EC0_CMD, EC0_DATA, addr, val)
-+#define ec1_read(addr) ecN_read(EC1_CMD, EC1_DATA, addr)
-+#define ec1_write(addr, val) ecN_write(EC1_CMD, EC1_DATA, addr, val)
-+
-+// Read from the emulated EEPROM
-+uint8_t eeprom_read(uint16_t addr);
-+
-+// Write to the emulated EEPROM
-+void eeprom_write(uint16_t addr, uint8_t val);
-+
-+// Read loaded debug key mask
-+uint16_t debug_loaded_keys(void);
-+
-+// The following location (via either EC0 or EC1) can be used to interact with the debug interface
-+#define EC_DEBUG_CMD 0x3d
-+
-+void debug_read_key(uint8_t i, uint8_t *key);
-+
-+void debug_write_key(uint8_t i, const uint8_t *key);
-+
-+uint32_t debug_read_dword(uint32_t addr);
-+
-+void debug_write_dword(uint32_t addr, uint32_t val);
-+
-+// RW unlock key index
-+#define DEBUG_RW_KEY_IDX 1
-+
-+// RW unlock key for EC version N24HT37W
-+extern const uint8_t debug_rw_key[8];
-+
-+#endif
-diff --git a/src/mainboard/lenovo/sklkbl_thinkpad/gpio.h b/src/mainboard/lenovo/sklkbl_thinkpad/gpio.h
-new file mode 100644
-index 0000000000..d89ed712d4
---- /dev/null
-+++ b/src/mainboard/lenovo/sklkbl_thinkpad/gpio.h
-@@ -0,0 +1,8 @@
-+/* SPDX-License-Identifier: GPL-2.0-only */
-+
-+#ifndef GPIO_H
-+#define GPIO_H
-+
-+void variant_config_gpios(void);
-+
-+#endif
-diff --git a/src/mainboard/lenovo/sklkbl_thinkpad/ramstage.c b/src/mainboard/lenovo/sklkbl_thinkpad/ramstage.c
-new file mode 100644
-index 0000000000..44c8578852
---- /dev/null
-+++ b/src/mainboard/lenovo/sklkbl_thinkpad/ramstage.c
-@@ -0,0 +1,105 @@
-+/* SPDX-License-Identifier: GPL-2.0-only */
-+
-+#include <arch/io.h>
-+#include <device/device.h>
-+#include <drivers/intel/gma/int15.h>
-+#include <option.h>
-+#include <soc/ramstage.h>
-+#include "ec.h"
-+#include "gpio.h"
-+
-+#define GPIO_GPU_RST GPP_E22 // active low
-+#define GPIO_1R8VIDEO_AON_ON GPP_E23
-+
-+#define GPIO_DGFX_PWRGD GPP_F3
-+
-+#define GPIO_DISCRETE_PRESENCE GPP_D9 // active low
-+#define GPIO_DGFX_VRAM_ID0 GPP_D11
-+#define GPIO_DGFX_VRAM_ID1 GPP_D12
-+
-+void mainboard_silicon_init_params(FSP_SIL_UPD *params)
-+{
-+ static const char * const dgfx_vram_id_str[] = { "1GB", "2GB", "4GB", "N/A" };
-+
-+ int dgfx_vram_id;
-+
-+ // Setup GPIOs
-+ variant_config_gpios();
-+
-+ // Detect and enable dGPU
-+ if (gpio_get(GPIO_DISCRETE_PRESENCE) == 0) { // active low
-+ dgfx_vram_id = gpio_get(GPIO_DGFX_VRAM_ID0) | gpio_get(GPIO_DGFX_VRAM_ID1) << 1;
-+ printk(BIOS_DEBUG, "Discrete GPU present with %s VRAM\n", dgfx_vram_id_str[dgfx_vram_id]);
-+
-+ // NOTE: i pulled this GPU enable sequence from thin air
-+ // it sometimes works but is buggy and the GPU disappears in some cases so disabling it by default.
-+ // also unrelated to this enable sequence the nouveau driver only works on 6.8-6.9 kernels
-+ if (get_uint_option("dgpu_enable", 0)) {
-+ printk(BIOS_DEBUG, "Enabling discrete GPU\n");
-+ gpio_set(GPIO_1R8VIDEO_AON_ON, 1); // Enable GPU power rail
-+ while (!gpio_get(GPIO_DGFX_PWRGD)) // Wait for power good signal from GPU
-+ ;
-+ gpio_set(GPIO_GPU_RST, 1); // Release GPU from reset
-+ } else {
-+ printk(BIOS_DEBUG, "Discrete GPU will remain disabled\n");
-+ }
-+
-+ } else {
-+ printk(BIOS_DEBUG, "Discrete GPU not present\n");
-+ }
-+}
-+
-+static void dump_ec_cfg(uint16_t port)
-+{
-+ microchip_pnp_enter_conf_state(port);
-+
-+ // Device info
-+ printk(BIOS_DEBUG, "Device id %02x\n", pnp_read(port, EC_DEVICE_ID));
-+ printk(BIOS_DEBUG, "Device rev %02x\n", pnp_read(port, EC_DEVICE_REV));
-+
-+ // Switch to LPCIF LDN
-+ pnp_write(port, PNP_LDN_SELECT, LDN_LPCIF);
-+
-+ // Dump SIRQs
-+ for (int i = 0; i <= 15; i += 1)
-+ printk(BIOS_DEBUG, "SIRQ%d = %02x\n", i, pnp_read(port, LPCIF_SIRQ(i)));
-+
-+ // Dump BARs
-+ printk(BIOS_DEBUG, "BAR CFG = %08x\n", pnp_read_le32(port, LPCIF_BAR_CFG));
-+ printk(BIOS_DEBUG, "BAR MAILBOX = %08x\n", pnp_read_le32(port, LPCIF_BAR_MAILBOX));
-+ printk(BIOS_DEBUG, "BAR 8042 = %08x\n", pnp_read_le32(port, LPCIF_BAR_8042));
-+ printk(BIOS_DEBUG, "BAR ACPI_EC0 = %08x\n", pnp_read_le32(port, LPCIF_BAR_ACPI_EC0));
-+ printk(BIOS_DEBUG, "BAR ACPI_EC1 = %08x\n", pnp_read_le32(port, LPCIF_BAR_ACPI_EC1));
-+ printk(BIOS_DEBUG, "BAR ACPI_EC2 = %08x\n", pnp_read_le32(port, LPCIF_BAR_ACPI_EC2));
-+ printk(BIOS_DEBUG, "BAR ACPI_EC3 = %08x\n", pnp_read_le32(port, LPCIF_BAR_ACPI_EC3));
-+ printk(BIOS_DEBUG, "BAR ACPI_PM0 = %08x\n", pnp_read_le32(port, LPCIF_BAR_ACPI_PM0));
-+ printk(BIOS_DEBUG, "BAR UART = %08x\n", pnp_read_le32(port, LPCIF_BAR_UART));
-+ printk(BIOS_DEBUG, "BAR FAST_KYBD = %08x\n", pnp_read_le32(port, LPCIF_BAR_FAST_KYBD));
-+ printk(BIOS_DEBUG, "BAR EMBED_FLASH = %08x\n", pnp_read_le32(port, LPCIF_BAR_EMBED_FLASH));
-+ printk(BIOS_DEBUG, "BAR GP_SPI = %08x\n", pnp_read_le32(port, LPCIF_BAR_GP_SPI));
-+ printk(BIOS_DEBUG, "BAR EMI = %08x\n", pnp_read_le32(port, LPCIF_BAR_EMI));
-+ printk(BIOS_DEBUG, "BAR PMH7 = %08x\n", pnp_read_le32(port, LPCIF_BAR_PMH7));
-+ printk(BIOS_DEBUG, "BAR PORT80_DBG0 = %08x\n", pnp_read_le32(port, LPCIF_BAR_PORT80_DBG0));
-+ printk(BIOS_DEBUG, "BAR PORT80_DBG1 = %08x\n", pnp_read_le32(port, LPCIF_BAR_PORT80_DBG1));
-+ printk(BIOS_DEBUG, "BAR RTC = %08x\n", pnp_read_le32(port, LPCIF_BAR_RTC));
-+
-+ microchip_pnp_exit_conf_state(port);
-+}
-+
-+static void mainboard_enable(struct device *dev)
-+{
-+ if (CONFIG(VGA_ROM_RUN))
-+ install_intel_vga_int15_handler(GMA_INT15_ACTIVE_LFP_EDP,
-+ GMA_INT15_PANEL_FIT_DEFAULT,
-+ GMA_INT15_BOOT_DISPLAY_DEFAULT, 0);
-+}
-+
-+static void mainboard_init(void *chip_info)
-+{
-+ dump_ec_cfg(EC_CFG_PORT);
-+}
-+
-+struct chip_operations mainboard_ops = {
-+ .enable_dev = mainboard_enable,
-+ .init = mainboard_init,
-+};
-diff --git a/src/mainboard/lenovo/sklkbl_thinkpad/variants/t480/data.vbt b/src/mainboard/lenovo/sklkbl_thinkpad/variants/t480/data.vbt
-new file mode 100644
-index 0000000000000000000000000000000000000000..4db4202961d0be67b75f52b28f2111d5655595c3
-GIT binary patch
-literal 4106
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-
-literal 0
-HcmV?d00001
-
-diff --git a/src/mainboard/lenovo/sklkbl_thinkpad/variants/t480/gma-mainboard.ads b/src/mainboard/lenovo/sklkbl_thinkpad/variants/t480/gma-mainboard.ads
-new file mode 100644
-index 0000000000..fcfbd75a92
---- /dev/null
-+++ b/src/mainboard/lenovo/sklkbl_thinkpad/variants/t480/gma-mainboard.ads
-@@ -0,0 +1,19 @@
-+-- 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 :=
-+ (eDP,
-+ DP1,
-+ DP2,
-+ HDMI1,
-+ HDMI2,
-+ others => Disabled);
-+
-+end GMA.Mainboard;
-diff --git a/src/mainboard/lenovo/sklkbl_thinkpad/variants/t480/gpio.c b/src/mainboard/lenovo/sklkbl_thinkpad/variants/t480/gpio.c
-new file mode 100644
-index 0000000000..f7c29e1f39
---- /dev/null
-+++ b/src/mainboard/lenovo/sklkbl_thinkpad/variants/t480/gpio.c
-@@ -0,0 +1,203 @@
-+/* SPDX-License-Identifier: GPL-2.0-only */
-+
-+#include <soc/gpio.h>
-+#include "../../gpio.h"
-+
-+/* FIXME: There are multiple GPIOs here that should be locked to prevent "TPM GPIO fail" style
-+ * attacks. Unfortunately SKL/KBL GPIO locking *does not* work currently. */
-+
-+static const struct pad_config gpio_table[] = {
-+
-+ /* ------- GPIO Community 0 ------- */
-+
-+ /* ------- GPIO Group GPP_A ------- */
-+ PAD_CFG_NF(GPP_A0, NONE, DEEP, NF1), /* -KBRC */
-+ PAD_CFG_NF(GPP_A1, NATIVE, DEEP, NF1), /* LPC_AD0 */
-+ PAD_CFG_NF(GPP_A2, NATIVE, DEEP, NF1), /* LPC_AD1 */
-+ PAD_CFG_NF(GPP_A3, NATIVE, DEEP, NF1), /* LPC_AD2 */
-+ PAD_CFG_NF(GPP_A4, NATIVE, DEEP, NF1), /* LPC_AD3 */
-+ PAD_CFG_NF(GPP_A5, NONE, DEEP, NF1), /* -LPC_FRAME */
-+ PAD_CFG_NF(GPP_A6, NONE, DEEP, NF1), /* IRQSER */
-+ PAD_CFG_NF(GPP_A7, NONE, DEEP, NF1), /* -TPM_IRQ */
-+ PAD_CFG_NF(GPP_A8, NONE, DEEP, NF1), /* -CLKRUN */
-+ PAD_CFG_NF(GPP_A9, NATIVE, DEEP, NF1), /* LPCCLK_EC_24M */
-+ PAD_CFG_NF(GPP_A10, NATIVE, DEEP, NF1), /* LPCCLK_DEBUG_24M */
-+ PAD_NC(GPP_A11, NONE),
-+ PAD_NC(GPP_A12, NONE),
-+ PAD_CFG_NF(GPP_A13, NATIVE, DEEP, NF1), /* -SUSWARN */
-+ PAD_CFG_NF(GPP_A14, NATIVE, DEEP, NF1), /* -SUS_STAT */
-+ PAD_CFG_NF(GPP_A15, NATIVE, DEEP, NF1), /* -SUSWARN */
-+ PAD_NC(GPP_A16, NONE),
-+ 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),
-+ PAD_NC(GPP_B2, NONE),
-+ PAD_NC(GPP_B3, NONE),
-+ PAD_CFG_GPI_SCI(GPP_B4, NONE, DEEP, EDGE_SINGLE, INVERT), /* -TBT_PLUG_EVENT */
-+ PAD_CFG_NF(GPP_B5, NONE, DEEP, NF1), /* -CLKREQ_PCIE0 */
-+ PAD_CFG_NF(GPP_B6, NONE, DEEP, NF1), /* -CLKREQ_PCIE4 */
-+ PAD_CFG_NF(GPP_B7, NONE, DEEP, NF1), /* -CLKREQ_PCIE5 */
-+ PAD_CFG_NF(GPP_B8, NONE, DEEP, NF1), /* -CLKREQ_PCIE6 */
-+ PAD_CFG_NF(GPP_B9, NONE, DEEP, NF1), /* -CLKREQ_PCIE8 */
-+ PAD_CFG_NF(GPP_B10, NONE, DEEP, NF1), /* -CLKREQ_PCIE10 */
-+ PAD_NC(GPP_B11, NONE),
-+ PAD_CFG_NF(GPP_B12, NONE, DEEP, NF1), /* -PCH_SLP_S0 */
-+ PAD_CFG_NF(GPP_B13, NONE, DEEP, NF1), /* -PLTRST */
-+ PAD_CFG_NF(GPP_B14, NATIVE, DEEP, NF1), /* PCH_SPKR */
-+ PAD_CFG_GPO(GPP_B15, 1, DEEP), /* NFC_DLREQ */
-+ PAD_NC(GPP_B16, NONE),
-+ PAD_NC(GPP_B17, NONE),
-+ PAD_NC(GPP_B18, NONE),
-+ PAD_NC(GPP_B19, NONE),
-+ PAD_NC(GPP_B20, NONE),
-+ PAD_NC(GPP_B21, NONE),
-+ PAD_NC(GPP_B22, NONE),
-+ PAD_NC(GPP_B23, NONE),
-+
-+ /* ------- GPIO Community 1 ------- */
-+
-+ /* ------- GPIO Group GPP_C ------- */
-+ PAD_CFG_NF(GPP_C0, NONE, DEEP, NF1), /* SMB_CLK */
-+ PAD_CFG_NF(GPP_C1, NONE, DEEP, NF1), /* SMB_DATA */
-+ PAD_NC(GPP_C2, NONE),
-+ PAD_CFG_NF(GPP_C3, NONE, DEEP, NF1), /* SML0_CLK */
-+ PAD_CFG_NF(GPP_C4, NONE, DEEP, NF1), /* SML0_DATA */
-+ PAD_NC(GPP_C5, NONE),
-+ PAD_CFG_NF(GPP_C6, NONE, DEEP, NF1), /* EC_SCL2 */
-+ PAD_CFG_NF(GPP_C7, NONE, DEEP, NF1), /* EC_SDA2 */
-+ PAD_NC(GPP_C8, NONE),
-+ PAD_NC(GPP_C9, NONE),
-+ PAD_NC(GPP_C10, NONE),
-+ PAD_NC(GPP_C11, NONE),
-+ PAD_NC(GPP_C12, NONE),
-+ PAD_NC(GPP_C13, NONE),
-+ PAD_NC(GPP_C14, NONE),
-+ PAD_NC(GPP_C15, NONE),
-+ PAD_CFG_NF(GPP_C16, NONE, DEEP, NF1), /* I2C0_DATA */
-+ PAD_CFG_NF(GPP_C17, NONE, DEEP, NF1), /* I2C0_CLK */
-+ PAD_NC(GPP_C18, NONE),
-+ PAD_NC(GPP_C19, NONE),
-+ PAD_CFG_GPO(GPP_C20, 0, DEEP), /* EPRIVACY_ON */
-+ PAD_CFG_GPO(GPP_C21, 0, DEEP), /* TBT_FORCE_PWR */
-+ PAD_CFG_GPI_SCI(GPP_C22, NONE, DEEP, EDGE_SINGLE, INVERT), /* -EC_SCI */
-+ PAD_CFG_GPI_SCI(GPP_C23, NONE, DEEP, EDGE_SINGLE, INVERT), /* -EC_WAKE */
-+
-+ /* ------- GPIO Group GPP_D ------- */
-+ 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),
-+ PAD_NC(GPP_D5, NONE),
-+ PAD_NC(GPP_D6, NONE),
-+ PAD_NC(GPP_D7, NONE),
-+ PAD_NC(GPP_D8, NONE),
-+ PAD_CFG_GPI_TRIG_OWN(GPP_D9, UP_20K, DEEP, OFF, ACPI), /* -DISCRETE_PRESENCE */
-+ PAD_NC(GPP_D10, NONE),
-+ PAD_CFG_GPI_TRIG_OWN(GPP_D11, UP_20K, DEEP, OFF, ACPI), /* DGFX_VRAM_ID0 */
-+ PAD_CFG_GPI_TRIG_OWN(GPP_D12, UP_20K, DEEP, OFF, ACPI), /* DGFX_VRAM_ID1 */
-+ PAD_NC(GPP_D13, NONE),
-+ PAD_NC(GPP_D14, NONE),
-+ PAD_NC(GPP_D15, NONE),
-+ PAD_NC(GPP_D16, NONE),
-+ PAD_CFG_GPO(GPP_D17, 0, DEEP), /* DDI_PRIORITY1 */
-+ PAD_NC(GPP_D18, NONE),
-+ PAD_NC(GPP_D19, NONE),
-+ PAD_NC(GPP_D20, NONE),
-+ PAD_NC(GPP_D21, NONE),
-+ PAD_CFG_GPI_TRIG_OWN(GPP_D22, UP_20K, DEEP, OFF, ACPI), /* -NFC_DTCT */
-+ PAD_NC(GPP_D23, NONE),
-+
-+ /* ------- GPIO Group GPP_E ------- */
-+ PAD_NC(GPP_E0, NONE),
-+ PAD_CFG_NF(GPP_E1, NONE, DEEP, NF1), /* -WWAN_SATA_DTCT (always HIGH) */
-+ PAD_CFG_NF(GPP_E2, NONE, DEEP, NF1), /* -PE_DTCT */
-+ PAD_CFG_GPI_TRIG_OWN(GPP_E3, NONE, DEEP, EDGE_SINGLE, ACPI), /* -TBT_PLUG_EVENT */
-+ PAD_CFG_GPO(GPP_E4, 1, DEEP), /* NFC_ON */
-+ PAD_NC(GPP_E5, NONE),
-+ PAD_CFG_NF(GPP_E6, NONE, RSMRST, NF1), /* SATA2_DEVSLP */
-+ PAD_NC(GPP_E7, NONE),
-+ PAD_NC(GPP_E8, NONE),
-+ PAD_CFG_NF(GPP_E9, NONE, DEEP, NF1), /* -USB_PORT0_OC0 (AON port) */
-+ PAD_CFG_NF(GPP_E10, NONE, DEEP, NF1), /* -USB_PORT1_OC1 (regular port) */
-+ PAD_NC(GPP_E11, NONE),
-+ PAD_CFG_GPI_APIC_HIGH(GPP_E12, NONE, DEEP), /* NFC_INT */
-+ PAD_CFG_NF(GPP_E13, NONE, DEEP, NF1), /* DDIP1_HPD */
-+ PAD_CFG_NF(GPP_E14, NONE, DEEP, NF1), /* DDIP2_HPD */
-+ PAD_NC(GPP_E15, NONE),
-+ PAD_NC(GPP_E16, NONE),
-+ PAD_CFG_NF(GPP_E17, NONE, DEEP, NF1), /* EDP_HPD */
-+ PAD_NC(GPP_E18, NONE),
-+ PAD_NC(GPP_E19, NONE),
-+ PAD_CFG_NF(GPP_E20, NONE, DEEP, NF1), /* DDIP2_CTRLCLK */
-+ PAD_CFG_NF(GPP_E21, NONE, DEEP, NF1), /* DDIP2_CTRLDATA */
-+ PAD_CFG_TERM_GPO(GPP_E22, 0, UP_20K, RSMRST), /* -GPU_RST */
-+ PAD_CFG_TERM_GPO(GPP_E23, 0, UP_20K, RSMRST), /* 1R8VIDEO_AON_ON */
-+
-+ /* ------- GPIO Community 2 ------- */
-+
-+ /* -------- GPIO Group GPD -------- */
-+ PAD_CFG_NF(GPD0, NONE, PWROK, NF1), /* -BATLOW */
-+ PAD_CFG_NF(GPD1, NATIVE, PWROK, NF1), /* AC_PRESENT */
-+ PAD_CFG_NF(GPD2, NATIVE, PWROK, NF1), /* -LANWAKE */
-+ PAD_CFG_NF(GPD3, UP_20K, PWROK, NF1), /* -PWRSW_EC */
-+ PAD_CFG_NF(GPD4, NONE, PWROK, NF1), /* -PCH_SLP_S3 */
-+ PAD_CFG_NF(GPD5, NONE, PWROK, NF1), /* -PCH_SLP_S4 */
-+ PAD_CFG_NF(GPD6, NONE, PWROK, NF1), /* -PCH_SLP_M */
-+ PAD_NC(GPD7, NONE),
-+ PAD_CFG_NF(GPD8, NONE, PWROK, NF1), /* SUSCLK_32K */
-+ PAD_CFG_NF(GPD9, NONE, PWROK, NF1), /* -PCH_SLP_WLAN */
-+ PAD_CFG_NF(GPD10, NONE, PWROK, NF1), /* -PCH_SLP_S5 */
-+ PAD_CFG_NF(GPD11, NONE, PWROK, NF1), /* LANPHYPC */
-+
-+ /* ------- GPIO Community 3 ------- */
-+
-+ /* ------- GPIO Group GPP_F ------- */
-+ PAD_NC(GPP_F0, NONE),
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F1, NONE, DEEP, OFF, ACPI), /* GC6_FB_EN */
-+ PAD_CFG_GPO(GPP_F2, 1, DEEP), /* -GPU_EVENT */
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F3, NONE, DEEP, OFF, ACPI), /* DGFX_PWRGD */
-+ PAD_CFG_GPO(GPP_F4, 1, DEEP), /* -WWAN_RESET */
-+ PAD_NC(GPP_F5, NONE),
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F6, UP_20K, DEEP, OFF, ACPI), /* -MIC_HW_EN (R961 to GND) */
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F7, UP_20K, DEEP, OFF, ACPI), /* -INT_MIC_DTCT */
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F8, UP_20K, DEEP, OFF, ACPI), /* WWAN_CFG0 */
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F9, UP_20K, DEEP, OFF, ACPI), /* WWAN_CFG1 */
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F10, UP_20K, DEEP, OFF, ACPI), /* WWAN_CFG2 */
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F11, UP_20K, DEEP, OFF, ACPI), /* WWAN_CFG3 */
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F12, UP_20K, DEEP, OFF, ACPI), /* PLANARID0 */
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F13, UP_20K, DEEP, OFF, ACPI), /* PLANARID1 */
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F14, UP_20K, DEEP, OFF, ACPI), /* PLANARID2 */
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F15, UP_20K, DEEP, OFF, ACPI), /* PLANARID3 */
-+ PAD_NC(GPP_F16, NONE),
-+ PAD_NC(GPP_F17, NONE),
-+ PAD_NC(GPP_F18, NONE),
-+ PAD_NC(GPP_F19, NONE),
-+ PAD_NC(GPP_F20, NONE),
-+ PAD_NC(GPP_F21, NONE),
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F22, UP_20K, DEEP, OFF, ACPI), /* -INTRUDER_PCH */
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F23, UP_20K, DEEP, OFF, ACPI), /* -SC_DTCT */
-+
-+ /* ------- GPIO Group GPP_G ------- */
-+ PAD_NC(GPP_G0, NONE),
-+ PAD_NC(GPP_G1, NONE),
-+ PAD_NC(GPP_G2, NONE),
-+ PAD_NC(GPP_G3, NONE),
-+ PAD_CFG_GPO(GPP_G4, 0, DEEP), /* TBT_RTD3_PWR_EN */
-+ PAD_CFG_GPO(GPP_G5, 0, DEEP), /* TBT_FORCE_USB_PWR */
-+ PAD_CFG_GPO(GPP_G6, 0, DEEP), /* -TBT_PERST */
-+ PAD_CFG_GPI_SCI(GPP_G7, NONE, DEEP, LEVEL, INVERT), /* -TBT_PCIE_WAKE */
-+};
-+
-+void variant_config_gpios(void)
-+{
-+ gpio_configure_pads(gpio_table, ARRAY_SIZE(gpio_table));
-+}
-diff --git a/src/mainboard/lenovo/sklkbl_thinkpad/variants/t480/hda_verb.c b/src/mainboard/lenovo/sklkbl_thinkpad/variants/t480/hda_verb.c
-new file mode 100644
-index 0000000000..3a951ce0da
---- /dev/null
-+++ b/src/mainboard/lenovo/sklkbl_thinkpad/variants/t480/hda_verb.c
-@@ -0,0 +1,90 @@
-+/* SPDX-License-Identifier: GPL-2.0-only */
-+
-+#include <device/azalia_device.h>
-+
-+const u32 cim_verb_data[] = {
-+ 0x10ec0257, // Vendor/Device ID: Realtek ALC257
-+ 0x17aa225d, // Subsystem ID
-+ 11,
-+ AZALIA_SUBVENDOR(0, 0x17aa225d),
-+
-+ AZALIA_PIN_CFG(0, 0x12, AZALIA_PIN_DESC(
-+ AZALIA_INTEGRATED,
-+ AZALIA_INTERNAL,
-+ AZALIA_MIC_IN,
-+ AZALIA_OTHER_DIGITAL,
-+ AZALIA_COLOR_UNKNOWN,
-+ AZALIA_NO_JACK_PRESENCE_DETECT,
-+ 2, 0
-+ )),
-+ AZALIA_PIN_CFG(0, 0x13, 0x40000000), // does not describe a jack or internal device
-+ AZALIA_PIN_CFG(0, 0x14, AZALIA_PIN_DESC(
-+ AZALIA_INTEGRATED,
-+ AZALIA_INTERNAL,
-+ AZALIA_SPEAKER,
-+ AZALIA_OTHER_ANALOG,
-+ AZALIA_COLOR_UNKNOWN,
-+ AZALIA_NO_JACK_PRESENCE_DETECT,
-+ 1, 0
-+ )),
-+ AZALIA_PIN_CFG(0, 0x18, AZALIA_PIN_CFG_NC(0)),
-+ AZALIA_PIN_CFG(0, 0x19, AZALIA_PIN_DESC(
-+ AZALIA_JACK,
-+ AZALIA_EXTERNAL_PRIMARY_CHASSIS | AZALIA_RIGHT,
-+ AZALIA_MIC_IN,
-+ AZALIA_STEREO_MONO_1_8,
-+ AZALIA_BLACK,
-+ AZALIA_JACK_PRESENCE_DETECT,
-+ 3, 0
-+ )),
-+ AZALIA_PIN_CFG(0, 0x1a, AZALIA_PIN_CFG_NC(0)),
-+ AZALIA_PIN_CFG(0, 0x1b, AZALIA_PIN_CFG_NC(0)),
-+ AZALIA_PIN_CFG(0, 0x1d, 0x40661b45), // does not describe a jack or internal device
-+ AZALIA_PIN_CFG(0, 0x1e, AZALIA_PIN_CFG_NC(0)),
-+ AZALIA_PIN_CFG(0, 0x21, AZALIA_PIN_DESC(
-+ AZALIA_JACK,
-+ AZALIA_EXTERNAL_PRIMARY_CHASSIS | AZALIA_RIGHT,
-+ AZALIA_HP_OUT,
-+ AZALIA_STEREO_MONO_1_8,
-+ AZALIA_BLACK,
-+ AZALIA_JACK_PRESENCE_DETECT,
-+ 1, 15
-+ )),
-+
-+ 0x8086280b, // Vendor/Device ID: Intel Kabylake HDMI
-+ 0x80860101, // Subsystem ID
-+ 4,
-+ AZALIA_SUBVENDOR(2, 0x80860101),
-+
-+ AZALIA_PIN_CFG(2, 0x05, AZALIA_PIN_DESC(
-+ AZALIA_JACK,
-+ AZALIA_DIGITAL_DISPLAY,
-+ AZALIA_DIGITAL_OTHER_OUT,
-+ AZALIA_OTHER_DIGITAL,
-+ AZALIA_COLOR_UNKNOWN,
-+ AZALIA_JACK_PRESENCE_DETECT,
-+ 1, 0
-+ )),
-+ AZALIA_PIN_CFG(2, 0x06, AZALIA_PIN_DESC(
-+ AZALIA_JACK,
-+ AZALIA_DIGITAL_DISPLAY,
-+ AZALIA_DIGITAL_OTHER_OUT,
-+ AZALIA_OTHER_DIGITAL,
-+ AZALIA_COLOR_UNKNOWN,
-+ AZALIA_JACK_PRESENCE_DETECT,
-+ 2, 0
-+ )),
-+ AZALIA_PIN_CFG(2, 0x07, AZALIA_PIN_DESC(
-+ AZALIA_JACK,
-+ AZALIA_DIGITAL_DISPLAY,
-+ AZALIA_DIGITAL_OTHER_OUT,
-+ AZALIA_OTHER_DIGITAL,
-+ AZALIA_COLOR_UNKNOWN,
-+ AZALIA_JACK_PRESENCE_DETECT,
-+ 3, 0
-+ )),
-+};
-+
-+const u32 pc_beep_verbs[] = {};
-+
-+AZALIA_ARRAY_SIZES;
-diff --git a/src/mainboard/lenovo/sklkbl_thinkpad/variants/t480/memory_init_params.c b/src/mainboard/lenovo/sklkbl_thinkpad/variants/t480/memory_init_params.c
-new file mode 100644
-index 0000000000..5252a402f9
---- /dev/null
-+++ b/src/mainboard/lenovo/sklkbl_thinkpad/variants/t480/memory_init_params.c
-@@ -0,0 +1,20 @@
-+/* SPDX-License-Identifier: GPL-2.0-only */
-+
-+#include <soc/romstage.h>
-+#include <spd_bin.h>
-+
-+void mainboard_memory_init_params(FSPM_UPD *mupd)
-+{
-+ FSP_M_CONFIG *mem_cfg = &mupd->FspmConfig;
-+ mem_cfg->DqPinsInterleaved = true; /* DDR_DQ in interleave mode */
-+ mem_cfg->CaVrefConfig = 2; /* VREF_CA to CH_A and VREF_DQ_B to CH_B */
-+ mem_cfg->MemorySpdDataLen = CONFIG_DIMM_SPD_SIZE;
-+
-+ /* Get SPD for memory slots */
-+ struct spd_block blk = { .addr_map = { 0x50, 0x51, } };
-+ get_spd_smbus(&blk);
-+ dump_spd_info(&blk);
-+
-+ mem_cfg->MemorySpdPtr00 = (uintptr_t)blk.spd_array[0];
-+ mem_cfg->MemorySpdPtr10 = (uintptr_t)blk.spd_array[1];
-+}
-diff --git a/src/mainboard/lenovo/sklkbl_thinkpad/variants/t480/overridetree.cb b/src/mainboard/lenovo/sklkbl_thinkpad/variants/t480/overridetree.cb
-new file mode 100644
-index 0000000000..bf66bd3a69
---- /dev/null
-+++ b/src/mainboard/lenovo/sklkbl_thinkpad/variants/t480/overridetree.cb
-@@ -0,0 +1,103 @@
-+# SPDX-License-Identifier: GPL-2.0-only
-+
-+chip soc/intel/skylake
-+ device domain 0 on
-+ device ref south_xhci on
-+ register "usb2_ports" = "{
-+ [0] = USB2_PORT_MID(OC1), // USB-A
-+ [1] = USB2_PORT_MID(OC0), // USB-A (always on)
-+ [2] = USB2_PORT_MID(OC_SKIP), // JSC-1 (smartcard slot)
-+ [3] = USB2_PORT_MID(OC_SKIP), // USB-C (charging port)
-+ [4] = USB2_PORT_MID(OC_SKIP), // JCAM1 (IR camera)
-+ [5] = USB2_PORT_MID(OC_SKIP), // JWWAN1 (M.2 WWAN USB)
-+ [6] = USB2_PORT_MID(OC_SKIP), // JWLAN1 (M.2 WLAN USB)
-+ [7] = USB2_PORT_MID(OC_SKIP), // JCAM1 (webcam)
-+ [8] = USB2_PORT_MID(OC_SKIP), // JFPR1 (fingerprint reader)
-+ [9] = USB2_PORT_MID(OC_SKIP), // JLCD1 (touch panel)
-+ }"
-+ register "usb3_ports" = "{
-+ [0] = USB3_PORT_DEFAULT(OC1), // USB-A
-+ [1] = USB3_PORT_DEFAULT(OC0), // USB-A (always on)
-+ [2] = USB3_PORT_DEFAULT(OC_SKIP), // RTS5344S (SD card reader)
-+ [3] = USB3_PORT_DEFAULT(OC_SKIP), // USB-C (charging port)
-+ }"
-+ end
-+
-+ device ref sata on
-+ # SATA_2 - JHDD1 SATA SSD
-+ register "SataPortsEnable[2]" = "1"
-+ register "SataPortsDevSlp[2]" = "1"
-+ end
-+
-+ # PCIe controller 1 - 1x4
-+ # PCIE 1-4 - RP1 - dGPU - CLKOUT0 - CLKREQ0
-+ #
-+ # PCIe controller 2 - 2x1+1x2 (lane reversal)
-+ # PCIE 5 - GBE - GBE - CLKOUT1 - CLKREQ1 (clobbers RP8)
-+ # PCIE 6 - RP7 - WLAN - CLKOUT2 - CLKREQ2
-+ # PCIE 7-8 - RP5 - WWAN - CLKOUT3 - CLKREQ3
-+ #
-+ # PCIe controller 3 - 2x2
-+ # PCIE 9-10 - RP9 - TB3 - CLKOUT4 - CLKREQ4
-+ # PCIE 11-12 - RP11 - SSD - CLKOUT5 - CLKREQ5
-+
-+ # dGPU - x4
-+ device ref pcie_rp1 on
-+ register "PcieRpEnable[0]" = "1"
-+ register "PcieRpClkReqSupport[0]" = "1"
-+ register "PcieRpClkReqNumber[0]" = "0"
-+ register "PcieRpClkSrcNumber[0]" = "0"
-+ register "PcieRpAdvancedErrorReporting[0]" = "1"
-+ register "PcieRpLtrEnable[0]" = "1"
-+ end
-+
-+ # Ethernet (clobbers RP8)
-+ device ref gbe on
-+ register "LanClkReqSupported" = "1"
-+ register "LanClkReqNumber" = "1"
-+ register "EnableLanLtr" = "1"
-+ register "EnableLanK1Off" = "1"
-+ end
-+
-+ # M.2 WLAN - x1
-+ device ref pcie_rp7 on
-+ register "PcieRpEnable[6]" = "1"
-+ register "PcieRpClkReqSupport[6]" = "1"
-+ register "PcieRpClkReqNumber[6]" = "2"
-+ register "PcieRpClkSrcNumber[6]" = "2"
-+ register "PcieRpAdvancedErrorReporting[6]" = "1"
-+ register "PcieRpLtrEnable[6]" = "1"
-+ end
-+
-+ # M.2 WWAN - x2
-+ device ref pcie_rp5 on
-+ register "PcieRpEnable[4]" = "1"
-+ register "PcieRpClkReqSupport[4]" = "1"
-+ register "PcieRpClkReqNumber[4]" = "3"
-+ register "PcieRpClkSrcNumber[4]" = "3"
-+ register "PcieRpAdvancedErrorReporting[4]" = "1"
-+ register "PcieRpLtrEnable[4]" = "1"
-+ end
-+
-+ # TB3 (Alpine Ridge LP) - x2
-+ device ref pcie_rp9 on
-+ register "PcieRpEnable[8]" = "1"
-+ register "PcieRpClkReqSupport[8]" = "1"
-+ register "PcieRpClkReqNumber[8]" = "4"
-+ register "PcieRpClkSrcNumber[8]" = "4"
-+ register "PcieRpAdvancedErrorReporting[8]" = "1"
-+ register "PcieRpLtrEnable[8]" = "1"
-+ register "PcieRpHotPlug[8]" = "1"
-+ end
-+
-+ # M.2 2280 caddy - x2
-+ device ref pcie_rp11 on
-+ register "PcieRpEnable[10]" = "1"
-+ register "PcieRpClkReqSupport[10]" = "1"
-+ register "PcieRpClkReqNumber[10]" = "5"
-+ register "PcieRpClkSrcNumber[10]" = "5"
-+ register "PcieRpAdvancedErrorReporting[10]" = "1"
-+ register "PcieRpLtrEnable[10]" = "1"
-+ end
-+ end
-+end
-diff --git a/src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/data.vbt b/src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/data.vbt
-new file mode 100644
-index 0000000000000000000000000000000000000000..47732e37d5b2bad4e674fd10eafa605d26f97840
-GIT binary patch
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-
-literal 0
-HcmV?d00001
-
-diff --git a/src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/gma-mainboard.ads b/src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/gma-mainboard.ads
-new file mode 100644
-index 0000000000..fcfbd75a92
---- /dev/null
-+++ b/src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/gma-mainboard.ads
-@@ -0,0 +1,19 @@
-+-- 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 :=
-+ (eDP,
-+ DP1,
-+ DP2,
-+ HDMI1,
-+ HDMI2,
-+ others => Disabled);
-+
-+end GMA.Mainboard;
-diff --git a/src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/gpio.c b/src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/gpio.c
-new file mode 100644
-index 0000000000..a98dd2bc4e
---- /dev/null
-+++ b/src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/gpio.c
-@@ -0,0 +1,199 @@
-+/* SPDX-License-Identifier: GPL-2.0-only */
-+
-+#include <soc/gpio.h>
-+#include "../../gpio.h"
-+
-+static const struct pad_config gpio_table[] = {
-+ /* ------- GPIO Community 0 ------- */
-+
-+ /* ------- GPIO Group GPP_A ------- */
-+ PAD_CFG_NF(GPP_A0, NONE, DEEP, NF1), /* -KBRC */
-+ PAD_CFG_NF(GPP_A1, NATIVE, DEEP, NF1), /* LPC_AD0 */
-+ PAD_CFG_NF(GPP_A2, NATIVE, DEEP, NF1), /* LPC_AD1 */
-+ PAD_CFG_NF(GPP_A3, NATIVE, DEEP, NF1), /* LPC_AD2 */
-+ PAD_CFG_NF(GPP_A4, NATIVE, DEEP, NF1), /* LPC_AD3 */
-+ PAD_CFG_NF(GPP_A5, NONE, DEEP, NF1), /* -LPC_FRAME */
-+ PAD_CFG_NF(GPP_A6, NONE, DEEP, NF1), /* IRQSER */
-+ PAD_CFG_NF(GPP_A7, NONE, DEEP, NF1), /* -TPM_IRQ */
-+ PAD_CFG_NF(GPP_A8, NONE, DEEP, NF1), /* -CLKRUN */
-+ PAD_CFG_NF(GPP_A9, DN_20K, DEEP, NF1), /* LPCCLK_EC_24M */
-+ PAD_CFG_NF(GPP_A10, DN_20K, DEEP, NF1), /* LPCCLK_DEBUG_24M */
-+ PAD_NC(GPP_A11, NONE),
-+ PAD_NC(GPP_A12, NONE),
-+ PAD_CFG_NF(GPP_A13, NONE, DEEP, NF1), /* -SUSWARN */
-+ PAD_CFG_NF(GPP_A14, NONE, DEEP, NF1), /* -SUS_STAT */
-+ PAD_CFG_NF(GPP_A15, UP_20K, DEEP, NF1), /* -SUSWARN */
-+ PAD_NC(GPP_A16, NONE),
-+ 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_CFG_NF(GPP_B0, NONE, DEEP, NF1),
-+ PAD_CFG_NF(GPP_B1, NONE, DEEP, NF1),
-+ PAD_NC(GPP_B2, NONE),
-+ PAD_NC(GPP_B3, NONE),
-+ PAD_CFG_GPI_SCI(GPP_B4, NONE, DEEP, EDGE_SINGLE, INVERT), /* -TBT_PLUG_EVENT */
-+ PAD_CFG_NF(GPP_B5, NONE, DEEP, NF1), /* -CLKREQ_PCIE0 (dGPU) */
-+ PAD_CFG_NF(GPP_B6, NONE, DEEP, NF1), /* -CLKREQ_PCIE3 (WWAN) */
-+ PAD_CFG_NF(GPP_B7, NONE, DEEP, NF1), /* -CLKREQ_PCIE4 (GBE) */
-+ PAD_CFG_NF(GPP_B8, NONE, DEEP, NF1), /* -CLKREQ_PCIE5 (WLAN) */
-+ PAD_CFG_NF(GPP_B9, NONE, DEEP, NF1), /* -CLKREQ_PCIE6 (TB3) */
-+ PAD_CFG_NF(GPP_B10, NONE, DEEP, NF1), /* -CLKREQ_PCIE8 (SSD) */
-+ PAD_NC(GPP_B11, NONE),
-+ PAD_CFG_NF(GPP_B12, NONE, DEEP, NF1), /* -PCH_SLP_S0 */
-+ PAD_CFG_NF(GPP_B13, NONE, DEEP, NF1), /* -PLTRST */
-+ PAD_CFG_NF(GPP_B14, NONE, DEEP, NF1), /* PCH_SPKR */
-+ PAD_CFG_GPO(GPP_B15, 0, DEEP), /* NFC_DLREQ */
-+ PAD_NC(GPP_B16, NONE),
-+ PAD_NC(GPP_B17, NONE),
-+ PAD_NC(GPP_B18, NONE),
-+ PAD_NC(GPP_B19, NONE),
-+ PAD_NC(GPP_B20, NONE),
-+ PAD_NC(GPP_B21, NONE),
-+ PAD_NC(GPP_B22, NONE),
-+ PAD_NC(GPP_B23, NONE),
-+
-+ /* ------- GPIO Community 1 ------- */
-+
-+ /* ------- GPIO Group GPP_C ------- */
-+ PAD_CFG_NF(GPP_C0, NONE, DEEP, NF1), /* SMB_CLK */
-+ PAD_CFG_NF(GPP_C1, NONE, DEEP, NF1), /* SMB_DATA */
-+ PAD_CFG_GPO(GPP_C2, 1, DEEP),
-+ PAD_CFG_NF(GPP_C3, NONE, DEEP, NF1), /* SML0_CLK */
-+ PAD_CFG_NF(GPP_C4, NONE, DEEP, NF1), /* SML0_DATA */
-+ PAD_NC(GPP_C5, NONE),
-+ PAD_CFG_NF(GPP_C6, NONE, DEEP, NF1), /* EC_SCL2 */
-+ PAD_CFG_NF(GPP_C7, NONE, DEEP, NF1), /* EC_SDA2 */
-+ PAD_NC(GPP_C8, NONE),
-+ PAD_NC(GPP_C9, NONE),
-+ PAD_NC(GPP_C10, NONE),
-+ PAD_NC(GPP_C11, NONE),
-+ PAD_NC(GPP_C12, NONE),
-+ PAD_NC(GPP_C13, NONE),
-+ PAD_NC(GPP_C14, NONE),
-+ PAD_NC(GPP_C15, NONE),
-+ PAD_CFG_NF(GPP_C16, NONE, DEEP, NF1), /* I2C0_DATA */
-+ PAD_CFG_NF(GPP_C17, NONE, DEEP, NF1), /* I2C0_CLK */
-+ PAD_NC(GPP_C18, NONE),
-+ PAD_NC(GPP_C19, NONE),
-+ PAD_CFG_GPO(GPP_C20, 0, DEEP), /* EPRIVACY_ON */
-+ PAD_CFG_GPO(GPP_C21, 0, DEEP), /* TBT_FORCE_PWR */
-+ PAD_CFG_GPI_SCI(GPP_C22, NONE, DEEP, EDGE_SINGLE, INVERT), /* -EC_SCI */
-+ PAD_CFG_GPI_SCI(GPP_C23, NONE, DEEP, EDGE_SINGLE, INVERT), /* -EC_WAKE */
-+
-+ /* ------- GPIO Group GPP_D ------- */
-+ 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),
-+ PAD_NC(GPP_D5, NONE),
-+ PAD_NC(GPP_D6, NONE),
-+ PAD_NC(GPP_D7, NONE),
-+ PAD_NC(GPP_D8, NONE),
-+ PAD_CFG_GPI_TRIG_OWN(GPP_D9, UP_20K, DEEP, OFF, ACPI), /* -DISCRETE_PRESENCE */
-+ PAD_NC(GPP_D10, NONE),
-+ PAD_CFG_GPI_TRIG_OWN(GPP_D11, UP_20K, DEEP, OFF, ACPI), /* DGFX_VRAM_ID0 */
-+ PAD_CFG_GPI_TRIG_OWN(GPP_D12, UP_20K, DEEP, OFF, ACPI), /* DGFX_VRAM_ID1 */
-+ PAD_NC(GPP_D13, NONE),
-+ PAD_NC(GPP_D14, NONE),
-+ PAD_NC(GPP_D15, NONE),
-+ PAD_NC(GPP_D16, NONE),
-+ PAD_CFG_GPO(GPP_D17, 0, DEEP), /* DDI_PRIORITY */
-+ PAD_NC(GPP_D18, NONE),
-+ PAD_NC(GPP_D19, NONE),
-+ PAD_NC(GPP_D20, NONE),
-+ PAD_NC(GPP_D21, NONE),
-+ PAD_CFG_GPI_TRIG_OWN(GPP_D22, UP_20K, DEEP, OFF, ACPI), /* -NFC_DTCT */
-+ PAD_NC(GPP_D23, NONE),
-+
-+ /* ------- GPIO Group GPP_E ------- */
-+ PAD_CFG_GPO(GPP_E0, 1, DEEP), /* BDC_ON */
-+ PAD_NC(GPP_E1, NONE),
-+ PAD_CFG_NF(GPP_E2, NONE, DEEP, NF1), /* -SATA2_DTCT */
-+ PAD_CFG_GPI_TRIG_OWN(GPP_E3, NONE, DEEP, EDGE_SINGLE, ACPI), /* -TBT_PLUG_EVENT */
-+ PAD_CFG_GPO(GPP_E4, 1, DEEP), /* NFC_ON */
-+ PAD_NC(GPP_E5, NONE),
-+ PAD_CFG_NF(GPP_E6, NONE, RSMRST, NF1), /* SATA2_DEVSLP */
-+ PAD_NC(GPP_E7, NONE),
-+ PAD_NC(GPP_E8, NONE),
-+ PAD_CFG_NF(GPP_E9, NONE, DEEP, NF1), /* -USB_PORT0_OC0 */
-+ PAD_CFG_NF(GPP_E10, NONE, DEEP, NF1), /* -USB_PORT1_OC1 */
-+ PAD_NC(GPP_E11, NONE),
-+ PAD_CFG_GPI_APIC_HIGH(GPP_E12, NONE, DEEP), /* NFC_INT */
-+ PAD_CFG_NF(GPP_E13, NONE, DEEP, NF1), /* DDIP1_HPD */
-+ PAD_CFG_NF(GPP_E14, NONE, DEEP, NF1), /* DDIP2_HPD */
-+ PAD_NC(GPP_E15, NONE),
-+ PAD_NC(GPP_E16, NONE),
-+ PAD_CFG_NF(GPP_E17, NONE, DEEP, NF1), /* EDP_HPD */
-+ PAD_NC(GPP_E18, NONE),
-+ PAD_CFG_GPO(GPP_E19, 0, DEEP),
-+ PAD_CFG_NF(GPP_E20, NONE, DEEP, NF1), /* DDIP2_CTRLCLK */
-+ PAD_CFG_NF(GPP_E21, NONE, DEEP, NF1), /* DDIP2_CTRLDATA */
-+ PAD_CFG_TERM_GPO(GPP_E22, 0, UP_20K, RSMRST), /* -GPU_RST */
-+ PAD_CFG_TERM_GPO(GPP_E23, 0, UP_20K, RSMRST), /* 1R8VIDEO_AON_ON */
-+
-+ /* ------- GPIO Community 2 ------- */
-+
-+ /* -------- GPIO Group GPD -------- */
-+ PAD_CFG_NF(GPD0, NONE, PWROK, NF1), /* -BATLOW */
-+ PAD_CFG_NF(GPD1, NATIVE, PWROK, NF1), /* AC_PRESENT */
-+ PAD_CFG_NF(GPD2, NATIVE, PWROK, NF1), /* -LANWAKE */
-+ PAD_CFG_NF(GPD3, UP_20K, PWROK, NF1), /* -PWRSW_EC */
-+ PAD_CFG_NF(GPD4, NONE, PWROK, NF1), /* -PCH_SLP_S3 */
-+ PAD_CFG_NF(GPD5, NONE, PWROK, NF1), /* -PCH_SLP_S4 */
-+ PAD_CFG_NF(GPD6, NONE, PWROK, NF1), /* -PCH_SLP_M */
-+ PAD_NC(GPD7, NONE),
-+ PAD_CFG_NF(GPD8, NONE, PWROK, NF1), /* SUSCLK_32K */
-+ PAD_CFG_NF(GPD9, NONE, PWROK, NF1), /* -PCH_SLP_WLAN */
-+ PAD_CFG_NF(GPD10, NONE, PWROK, NF1), /* -PCH_SLP_S5 */
-+ PAD_CFG_NF(GPD11, NONE, PWROK, NF1), /* LANPHYPC */
-+
-+ /* ------- GPIO Community 3 ------- */
-+
-+ /* ------- GPIO Group GPP_F ------- */
-+ PAD_CFG_GPO(GPP_F0, 0, DEEP),
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F1, NONE, DEEP, OFF, ACPI), /* GC6_FB_EN */
-+ PAD_CFG_GPO(GPP_F2, 1, DEEP), /* -GPU_EVENT */
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F3, NONE, PLTRST, OFF, ACPI), /* DGFX_PWRGD */
-+ PAD_NC(GPP_F4, NONE), /* -WWAN_RESET */
-+ PAD_NC(GPP_F5, NONE),
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F6, UP_20K, DEEP, OFF, ACPI), /* -MIC_HW_EN (R37 to GND) */
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F7, UP_20K, DEEP, OFF, ACPI), /* -INT_MIC_DTCT */
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F8, UP_20K, DEEP, OFF, ACPI), /* WWAN_CFG0 */
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F9, UP_20K, DEEP, OFF, ACPI), /* WWAN_CFG1 */
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F10, UP_20K, DEEP, OFF, ACPI), /* WWAN_CFG2 */
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F11, UP_20K, DEEP, OFF, ACPI), /* WWAN_CFG3 */
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F12, UP_20K, DEEP, OFF, ACPI), /* PLANARID0 */
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F13, UP_20K, DEEP, OFF, ACPI), /* PLANARID1 */
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F14, UP_20K, DEEP, OFF, ACPI), /* PLANARID2 */
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F15, UP_20K, DEEP, OFF, ACPI), /* PLANARID3 */
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F16, UP_20K, DEEP, OFF, ACPI), /* MEMORYID0 */
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F17, UP_20K, DEEP, OFF, ACPI), /* MEMORYID1 */
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F18, UP_20K, DEEP, OFF, ACPI), /* MEMORYID2 */
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F19, UP_20K, DEEP, OFF, ACPI), /* MEMORYID3 */
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F20, UP_20K, DEEP, OFF, ACPI), /* MEMORYID4 */
-+ PAD_NC(GPP_F21, NONE),
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F22, UP_20K, DEEP, OFF, ACPI), /* -TAMPER_SW_DTCT */
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F23, UP_20K, DEEP, OFF, ACPI), /* -SC_DTCT */
-+
-+ /* ------- GPIO Group GPP_G ------- */
-+ PAD_NC(GPP_G0, NONE),
-+ PAD_NC(GPP_G1, NONE),
-+ PAD_NC(GPP_G2, NONE),
-+ PAD_NC(GPP_G3, NONE),
-+ PAD_CFG_GPO(GPP_G4, 0, DEEP), /* TBT_RTD3_PWR_EN */
-+ PAD_CFG_GPO(GPP_G5, 0, DEEP), /* TBT_FORCE_USB_PWR */
-+ PAD_CFG_GPO(GPP_G6, 0, DEEP), /* -TBT_PERST */
-+ PAD_CFG_GPI_SCI(GPP_G7, NONE, DEEP, LEVEL, INVERT), /* -TBT_PCIE_WAKE */
-+};
-+
-+void variant_config_gpios(void)
-+{
-+ gpio_configure_pads(gpio_table, ARRAY_SIZE(gpio_table));
-+}
-diff --git a/src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/hda_verb.c b/src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/hda_verb.c
-new file mode 100644
-index 0000000000..b1d96c5a76
---- /dev/null
-+++ b/src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/hda_verb.c
-@@ -0,0 +1,90 @@
-+/* SPDX-License-Identifier: GPL-2.0-only */
-+
-+#include <device/azalia_device.h>
-+
-+const u32 cim_verb_data[] = {
-+ 0x10ec0257, // Vendor/Device ID: Realtek ALC257
-+ 0x17aa2258, // Subsystem ID
-+ 11,
-+ AZALIA_SUBVENDOR(0, 0x17aa2258),
-+
-+ AZALIA_PIN_CFG(0, 0x12, AZALIA_PIN_DESC(
-+ AZALIA_INTEGRATED,
-+ AZALIA_INTERNAL,
-+ AZALIA_MIC_IN,
-+ AZALIA_OTHER_DIGITAL,
-+ AZALIA_COLOR_UNKNOWN,
-+ AZALIA_NO_JACK_PRESENCE_DETECT,
-+ 2, 0
-+ )),
-+ AZALIA_PIN_CFG(0, 0x13, 0x40000000), // does not describe a jack or internal device
-+ AZALIA_PIN_CFG(0, 0x14, AZALIA_PIN_DESC(
-+ AZALIA_INTEGRATED,
-+ AZALIA_INTERNAL,
-+ AZALIA_SPEAKER,
-+ AZALIA_OTHER_ANALOG,
-+ AZALIA_COLOR_UNKNOWN,
-+ AZALIA_NO_JACK_PRESENCE_DETECT,
-+ 1, 0
-+ )),
-+ AZALIA_PIN_CFG(0, 0x18, AZALIA_PIN_CFG_NC(0)),
-+ AZALIA_PIN_CFG(0, 0x19, AZALIA_PIN_DESC(
-+ AZALIA_JACK,
-+ AZALIA_EXTERNAL_PRIMARY_CHASSIS | AZALIA_RIGHT,
-+ AZALIA_MIC_IN,
-+ AZALIA_STEREO_MONO_1_8,
-+ AZALIA_BLACK,
-+ AZALIA_JACK_PRESENCE_DETECT,
-+ 3, 0
-+ )),
-+ AZALIA_PIN_CFG(0, 0x1a, AZALIA_PIN_CFG_NC(0)),
-+ AZALIA_PIN_CFG(0, 0x1b, AZALIA_PIN_CFG_NC(0)),
-+ AZALIA_PIN_CFG(0, 0x1d, 0x40661b45), // does not describe a jack or internal device
-+ AZALIA_PIN_CFG(0, 0x1e, AZALIA_PIN_CFG_NC(0)),
-+ AZALIA_PIN_CFG(0, 0x21, AZALIA_PIN_DESC(
-+ AZALIA_JACK,
-+ AZALIA_EXTERNAL_PRIMARY_CHASSIS | AZALIA_RIGHT,
-+ AZALIA_HP_OUT,
-+ AZALIA_STEREO_MONO_1_8,
-+ AZALIA_BLACK,
-+ AZALIA_JACK_PRESENCE_DETECT,
-+ 1, 15
-+ )),
-+
-+ 0x8086280b, // Vendor/Device ID: Intel Kabylake HDMI
-+ 0x80860101, // Subsystem ID
-+ 4,
-+ AZALIA_SUBVENDOR(2, 0x80860101),
-+
-+ AZALIA_PIN_CFG(2, 0x05, AZALIA_PIN_DESC(
-+ AZALIA_JACK,
-+ AZALIA_DIGITAL_DISPLAY,
-+ AZALIA_DIGITAL_OTHER_OUT,
-+ AZALIA_OTHER_DIGITAL,
-+ AZALIA_COLOR_UNKNOWN,
-+ AZALIA_JACK_PRESENCE_DETECT,
-+ 1, 0
-+ )),
-+ AZALIA_PIN_CFG(2, 0x06, AZALIA_PIN_DESC(
-+ AZALIA_JACK,
-+ AZALIA_DIGITAL_DISPLAY,
-+ AZALIA_DIGITAL_OTHER_OUT,
-+ AZALIA_OTHER_DIGITAL,
-+ AZALIA_COLOR_UNKNOWN,
-+ AZALIA_JACK_PRESENCE_DETECT,
-+ 1, 0
-+ )),
-+ AZALIA_PIN_CFG(2, 0x07, AZALIA_PIN_DESC(
-+ AZALIA_JACK,
-+ AZALIA_DIGITAL_DISPLAY,
-+ AZALIA_DIGITAL_OTHER_OUT,
-+ AZALIA_OTHER_DIGITAL,
-+ AZALIA_COLOR_UNKNOWN,
-+ AZALIA_JACK_PRESENCE_DETECT,
-+ 1, 0
-+ )),
-+};
-+
-+const u32 pc_beep_verbs[] = {};
-+
-+AZALIA_ARRAY_SIZES;
-diff --git a/src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/memory_init_params.c b/src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/memory_init_params.c
-new file mode 100644
-index 0000000000..001e934b3a
---- /dev/null
-+++ b/src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/memory_init_params.c
-@@ -0,0 +1,44 @@
-+/* SPDX-License-Identifier: GPL-2.0-only */
-+
-+#include <cbfs.h>
-+#include <gpio.h>
-+#include <soc/gpio.h>
-+#include <soc/romstage.h>
-+#include <spd_bin.h>
-+#include <stdio.h>
-+
-+static const struct pad_config memory_id_gpio_table[] = {
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F16, UP_20K, DEEP, OFF, ACPI), /* MEMORYID0 */
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F17, UP_20K, DEEP, OFF, ACPI), /* MEMORYID1 */
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F18, UP_20K, DEEP, OFF, ACPI), /* MEMORYID2 */
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F19, UP_20K, DEEP, OFF, ACPI), /* MEMORYID3 */
-+ PAD_CFG_GPI_TRIG_OWN(GPP_F20, UP_20K, DEEP, OFF, ACPI), /* MEMORYID4 */
-+};
-+
-+void mainboard_memory_init_params(FSPM_UPD *mupd)
-+{
-+ int spd_idx;
-+ char spd_name[20];
-+ size_t spd_size;
-+
-+ FSP_M_CONFIG *mem_cfg = &mupd->FspmConfig;
-+ mem_cfg->DqPinsInterleaved = true; /* DDR_DQ in interleave mode */
-+ mem_cfg->CaVrefConfig = 2; /* VREF_CA to CH_A and VREF_DQ_B to CH_B */
-+ mem_cfg->MemorySpdDataLen = CONFIG_DIMM_SPD_SIZE;
-+
-+ /* Get SPD for soldered RAM SPD (CH A) */
-+ gpio_configure_pads(memory_id_gpio_table, ARRAY_SIZE(memory_id_gpio_table));
-+
-+ spd_idx = gpio_get(GPP_F16) | gpio_get(GPP_F17) << 1 | gpio_get(GPP_F18) << 2 |
-+ gpio_get(GPP_F19) << 3 | gpio_get(GPP_F20) << 4;
-+ printk(BIOS_DEBUG, "Detected MEMORY_ID = %d\n", spd_idx);
-+ snprintf(spd_name, sizeof(spd_name), "spd_%d.bin", spd_idx);
-+ mem_cfg->MemorySpdPtr00 = (uintptr_t)cbfs_map(spd_name, &spd_size);
-+
-+ /* Get SPD for memory slot (CH B) */
-+ struct spd_block blk = { .addr_map = { [1] = 0x51, } };
-+ get_spd_smbus(&blk);
-+ dump_spd_info(&blk);
-+
-+ mem_cfg->MemorySpdPtr10 = (uintptr_t)blk.spd_array[1];
-+}
-diff --git a/src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/overridetree.cb b/src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/overridetree.cb
-new file mode 100644
-index 0000000000..d4afca20c4
---- /dev/null
-+++ b/src/mainboard/lenovo/sklkbl_thinkpad/variants/t480s/overridetree.cb
-@@ -0,0 +1,103 @@
-+# SPDX-License-Identifier: GPL-2.0-only
-+
-+chip soc/intel/skylake
-+ device domain 0 on
-+ device ref south_xhci on
-+ register "usb2_ports" = "{
-+ [0] = USB2_PORT_MID(OC0), // JUSB1 (USB-A always on)
-+ [1] = USB2_PORT_MID(OC1), // JUSB2 (USB-A)
-+ [2] = USB2_PORT_MID(OC_SKIP), // JFPR (smartcard slot)
-+ [3] = USB2_PORT_MID(OC_SKIP), // JUSBC (USB-C)
-+ [4] = USB2_PORT_MID(OC_SKIP), // JCAM (IR camera)
-+ [5] = USB2_PORT_MID(OC_SKIP), // JWWAN (M.2 WWAN USB)
-+ [6] = USB2_PORT_MID(OC_SKIP), // JWLAN (M.2 WLAN USB)
-+ [7] = USB2_PORT_MID(OC_SKIP), // JCAM (webcam)
-+ [8] = USB2_PORT_MID(OC_SKIP), // JFPR (fingerprint reader)
-+ [9] = USB2_PORT_MID(OC_SKIP), // JLCD (touch panel)
-+ }"
-+ register "usb3_ports" = "{
-+ [0] = USB3_PORT_DEFAULT(OC0), // JUSB1 (USB-A always on)
-+ [1] = USB3_PORT_DEFAULT(OC1), // JUSB2 (USB-A)
-+ [2] = USB3_PORT_DEFAULT(OC_SKIP), // JSD (SD card reader)
-+ [3] = USB3_PORT_DEFAULT(OC_SKIP), // JUSBC (USB-C)
-+ }"
-+ end
-+
-+ device ref sata on
-+ # SATA_2 - Main M.2 SATA SSD
-+ register "SataPortsEnable[2]" = "1"
-+ register "SataPortsDevSlp[2]" = "1"
-+ end
-+
-+ # PCIe controller 1 - 1x2+2x1
-+ # PCIE 1-2 - RP1 - dGPU - CLKOUT0 - CLKREQ0
-+ # PCIE 4 - RP4 - WWAN - CLKOUT1 - CLKREQ1
-+ #
-+ # PCIe controller 2 - 2x1+1x2 (lane reversal)
-+ # PCIE 5 - GBE - GBE - CLKOUT2 - CLKREQ2 (clobbers RP8)
-+ # PCIE 6 - RP7 - WLAN - CLKOUT3 - CLKREQ3
-+ # PCIE 7-8 - RP5 - TB3 - CLKOUT4 - CLKREQ4
-+ #
-+ # PCIe controller 3 - 1x4 (lane reversal)
-+ # PCIE 9-12 - RP9 - SSD - CLKOUT5 - CLKREQ5
-+
-+ # dGPU - x2
-+ device ref pcie_rp1 on
-+ register "PcieRpEnable[0]" = "1"
-+ register "PcieRpClkReqSupport[0]" = "1"
-+ register "PcieRpClkReqNumber[0]" = "0"
-+ register "PcieRpClkSrcNumber[0]" = "0"
-+ register "PcieRpAdvancedErrorReporting[0]" = "1"
-+ register "PcieRpLtrEnable[0]" = "1"
-+ end
-+
-+ # M.2 WWAN - x1
-+ device ref pcie_rp4 on
-+ register "PcieRpEnable[3]" = "1"
-+ register "PcieRpClkReqSupport[3]" = "1"
-+ register "PcieRpClkReqNumber[3]" = "1"
-+ register "PcieRpClkSrcNumber[3]" = "1"
-+ register "PcieRpAdvancedErrorReporting[3]" = "1"
-+ register "PcieRpLtrEnable[3]" = "1"
-+ end
-+
-+ # Ethernet (clobbers RP8)
-+ device ref gbe on
-+ register "LanClkReqSupported" = "1"
-+ register "LanClkReqNumber" = "2"
-+ register "EnableLanLtr" = "1"
-+ register "EnableLanK1Off" = "1"
-+ end
-+
-+ # M.2 WLAN - x1
-+ device ref pcie_rp7 on
-+ register "PcieRpEnable[6]" = "1"
-+ register "PcieRpClkReqSupport[6]" = "1"
-+ register "PcieRpClkReqNumber[6]" = "3"
-+ register "PcieRpClkSrcNumber[6]" = "3"
-+ register "PcieRpAdvancedErrorReporting[6]" = "1"
-+ register "PcieRpLtrEnable[6]" = "1"
-+ end
-+
-+ # TB3 (Alpine Ridge LP) - x2
-+ device ref pcie_rp5 on
-+ register "PcieRpEnable[4]" = "1"
-+ register "PcieRpClkReqSupport[4]" = "1"
-+ register "PcieRpClkReqNumber[4]" = "4"
-+ register "PcieRpClkSrcNumber[4]" = "4"
-+ register "PcieRpAdvancedErrorReporting[4]" = "1"
-+ register "PcieRpLtrEnable[4]" = "1"
-+ register "PcieRpHotPlug[4]" = "1"
-+ end
-+
-+ # M.2 2280 SSD - x2
-+ device ref pcie_rp9 on
-+ register "PcieRpEnable[8]" = "1"
-+ register "PcieRpClkReqSupport[8]" = "1"
-+ register "PcieRpClkReqNumber[8]" = "5"
-+ register "PcieRpClkSrcNumber[8]" = "5"
-+ register "PcieRpAdvancedErrorReporting[8]" = "1"
-+ register "PcieRpLtrEnable[8]" = "1"
-+ end
-+ end
-+end
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---
-2.39.5
-