mb/purism/librem_jsl: Add support for Librem 11

This adds support for the Librem 11 tablet, using the ME 13.50.15.1436
binary from the original BIOS (version 28.D8.E1.021) and FSP binaries
from a Jasper Lake Chromebook.

The following features were tested with PureOS:
* Audio (speakers, microphone, headset jack)
* Cameras
* Display
* Touchscreen and pen
* Keyboard cover, with tablet/laptop mode switch indicated via ACPI
* Power and volume buttons
* USB-C ports (USB 2/3, DP alt mode, PD charging)
* SD card reader
* WLAN
* Bluetooth
* NVMe SSD (socketed)
* Battery state information from EC
* Accelerometer

A UART is accessible with soldering via test points on the mainboard,
documented in the mainboard Kconfig with a toggle to enable it for
coreboot logging.

Change-Id: I545994889ddfb41f56de09b3a42840bccbd7c4aa
Signed-off-by: Jonathon Hall <jonathon.hall@puri.sm>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78343
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>

1 files changed, 23 insertions, 0 deletions

diff --git a/src/mainboard/purism/librem_jsl/acpi/ac.asl b/src/mainboard/purism/librem_jsl/acpi/ac.asl
new file mode 100644
index 0000000000..86267e8eba
--- /dev/null
+++ b/src/mainboard/purism/librem_jsl/acpi/ac.asl
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+Device (AC)
+{
+	Name (_HID, "ACPI0003" /* Power Source Device */)  // _HID: Hardware ID
+	Name (_PCL, Package (0x01)  // _PCL: Power Consumer List
+	{
+		_SB
+	})
+
+	Name (ACEX, One)
+
+	Method (_PSR, 0, NotSerialized)  // _PSR: Power Source
+	{
+		Printf ("AC: _PSR: %o", ACEX)
+		Return (ACEX)
+	}
+
+	Method (_STA, 0, NotSerialized)  // _STA: Status
+	{
+		Return (0x0F)
+	}
+}