mb/system76/whl-u: Add System76 Galago Pro 3 Rev C

Tested with TianoCore payload (UefiPayloadPkg).

Working:

- PS/2 keyboard, touchpad
- Both DIMM slots
- NVMe port
- SATA port
- SD card slot
- Left USB 3 Type-A port
- Right USB 3 Type-A port
- Right USB 3 Type-C port
- Webcam
- Ethernet
- Integrated graphics using Intel GOP driver
- mDP output
- HDMI output
- Internal microphone
- Internal speakers
- 3.5mm audio input
- 3.5mm audio output
- S3 suspend/resume
- Flashing with flashrom
- Booting to Ubuntu Linux 20.10 and Windows 10

Not tested:

- Thunderbolt functionality

Change-Id: I5c992e603dbd57ae1b4ddc3a0f9bfc92d6acc813
Signed-off-by: Jeremy Soller <jeremy@system76.com>
Signed-off-by: Tim Crawford <tcrawford@system76.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51832
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

4 files changed, 66 insertions, 0 deletions

diff --git a/src/mainboard/system76/whl-u/acpi/gpe.asl b/src/mainboard/system76/whl-u/acpi/gpe.asl
new file mode 100644
index 0000000000..e0da476705
--- /dev/null
+++ b/src/mainboard/system76/whl-u/acpi/gpe.asl
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+// GPP_D9 SCI
+Method (_L29, 0, Serialized) {
+	Debug = Concatenate("GPE _L29: ", ToHexString(\_SB.PCI0.LPCB.EC0.WFNO))
+	If (\_SB.PCI0.LPCB.EC0.ECOK) {
+		If (\_SB.PCI0.LPCB.EC0.WFNO == 1) {
+			Notify(\_SB.LID0, 0x80)
+		}
+	}
+}
diff --git a/src/mainboard/system76/whl-u/acpi/mainboard.asl b/src/mainboard/system76/whl-u/acpi/mainboard.asl
new file mode 100644
index 0000000000..ade0bb2625
--- /dev/null
+++ b/src/mainboard/system76/whl-u/acpi/mainboard.asl
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#define EC_GPE_SCI 0x50 /* GPP_E16 */
+#define EC_GPE_SWI 0x29 /* GPP_D9 */
+#include <ec/system76/ec/acpi/ec.asl>
+
+Scope (\_SB) {
+	#include "sleep.asl"
+}
+
+Scope (\_GPE) {
+	#include "gpe.asl"
+}
+
+#include "tbt.asl"
diff --git a/src/mainboard/system76/whl-u/acpi/sleep.asl b/src/mainboard/system76/whl-u/acpi/sleep.asl
new file mode 100644
index 0000000000..48c50e075e
--- /dev/null
+++ b/src/mainboard/system76/whl-u/acpi/sleep.asl
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+/* Method called from _PTS prior to enter sleep state */
+Method (MPTS, 1) {
+	\_SB.PCI0.LPCB.EC0.PTS (Arg0)
+}
+
+/* Method called from _WAK prior to wakeup */
+Method (MWAK, 1) {
+	\_SB.PCI0.LPCB.EC0.WAK (Arg0)
+}
diff --git a/src/mainboard/system76/whl-u/acpi/tbt.asl b/src/mainboard/system76/whl-u/acpi/tbt.asl
new file mode 100644
index 0000000000..56c2c9b991
--- /dev/null
+++ b/src/mainboard/system76/whl-u/acpi/tbt.asl
@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+// See https://docs.microsoft.com/en-us/windows-hardware/drivers/pci/dsd-for-pcie-root-ports
+Scope(\_SB.PCI0.RP05) {
+	Method(_DSD, 0, NotSerialized) {
+		Return (Package(4) {
+			// https://docs.microsoft.com/en-us/windows-hardware/drivers/pci/dsd-for-pcie-root-ports#identifying-pcie-root-ports-supporting-hot-plug-in-d3
+			ToUUID("6211e2c0-58a3-4af3-90e1-927a4e0c55a4"),
+			Package(1) {
+				Package(2) {
+					"HotPlugSupportInD3",
+					1
+				}
+			},
+			// https://docs.microsoft.com/en-us/windows-hardware/drivers/pci/dsd-for-pcie-root-ports#identifying-externally-exposed-pcie-root-ports
+			ToUUID("efcc06cc-73ac-4bc3-bff0-76143807c389"),
+			Package(2) {
+				Package(2) {
+					"ExternalFacingPort",
+					1
+				},
+				Package(2) {
+					"UID",
+					0
+				}
+			}
+		})
+	}
+}