mainboard/system76: Add System76 Lemur Pro (lemp9)

The System76 Lemur Pro (lemp9) is an upcoming laptop computer. Support
in coreboot is developed by System76 and provided as the default
firmware option. Testing is done on a pre-production model expected to
be identical from a firmware perspective to the production model.

Working:
- Payload
    - Tianocore
- CPU
    - Intel i7-10510U
    - Intel i5-10210U
- EC
    - ITE IT5570E running https://github.com/system76/ec
    - Backlit Keyboard, with standard PS/2 keycodes and SCI hotkeys
    - Battery
    - Charger, using AC adapter or USB-C PD
    - Suspend/resume
    - Touchpad
- GPU
    - Intel UHD Graphics 620
    - GOP driver is recommended, VBT is provided
    - eDP 14-inch 1920x1080 LCD
    - HDMI video
    - USB-C DisplayPort video
- Memory
    - Channel 0: 8-GB on-board DDR4 Samsung K4AAG165WA-BCTD
    - Channel 1: 8-GB/16-GB/32-GB DDR4 SO-DIMM
- Networking
    - M.2 PCIe/CNVi WiFi/Bluetooth
- Sound
    - Realtek ALC293D
    - Internal speaker
    - Internal microphone
    - Combined headphone/microphone 3.5-mm jack
    - HDMI audio
    - USB-C DisplayPort audio
- Storage
    - M.2 PCIe/SATA SSD-1
    - M.2 PCIe/SATA SSD-2
    - RTS5227S MicroSD card reader
- USB
    - 1280x720 CCD camera
    - USB 3.1 Gen 2 Type-C (left)
    - USB 3.1 Gen 2 Type-A (left)
    - USB 3.1 Gen 1 Type-A (right)

Not working:
- TPM2 - SPI bus 0, chip select 2 is used. Chip selects other than 0
  are not currently supported by the intel fast_spi driver.

Signed-off-by: Jeremy Soller <jeremy@system76.com>
Change-Id: Ib0a32bbc6f89a662085ab4a254676bc1fad7dc60
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38463
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

1 files changed, 73 insertions, 0 deletions

diff --git a/Documentation/mainboard/system76/lemp9.md b/Documentation/mainboard/system76/lemp9.md
new file mode 100644
index 0000000000..9739484820
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+++ b/Documentation/mainboard/system76/lemp9.md
@@ -0,0 +1,73 @@
+# System76 Lemur Pro (lemp9)
+
+## Specs
+
+- CPU
+    - Intel i7-10510U
+    - Intel i5-10210U
+- EC
+    - ITE IT5570E running https://github.com/system76/ec
+    - Backlit Keyboard, with standard PS/2 keycodes and SCI hotkeys
+    - Battery
+    - Charger, using AC adapter or USB-C PD
+    - Suspend/resume
+    - Touchpad
+- GPU
+    - Intel UHD Graphics 620
+    - GOP driver is recommended, VBT is provided
+    - eDP 14-inch 1920x1080 LCD
+    - HDMI video
+    - USB-C DisplayPort video
+- Memory
+    - Channel 0: 8-GB on-board DDR4 Samsung K4AAG165WA-BCTD
+    - Channel 1: 8-GB/16-GB/32-GB DDR4 SO-DIMM
+- Networking
+    - M.2 PCIe/CNVi WiFi/Bluetooth
+- Sound
+    - Realtek ALC293D
+    - Internal speaker
+    - Internal microphone
+    - Combined headphone/microphone 3.5-mm jack
+    - HDMI audio
+    - USB-C DisplayPort audio
+- Storage
+    - M.2 PCIe/SATA SSD-1
+    - M.2 PCIe/SATA SSD-2
+    - RTS5227S MicroSD card reader
+- USB
+    - 1280x720 CCD camera
+    - USB 3.1 Gen 2 Type-C (left)
+    - USB 3.1 Gen 2 Type-A (left)
+    - USB 3.1 Gen 1 Type-A (right)
+
+## Building coreboot
+
+The following commands will build a working image:
+
+```bash
+make distclean
+make defconfig KBUILD_DEFCONFIG=configs/config.system76_lemp9
+make
+```
+
+## Flashing coreboot
+
+```eval_rst
++---------------------+------------+
+| Type                | Value      |
++=====================+============+
+| Socketed flash      | no         |
++---------------------+------------+
+| Vendor              | GigaDevice |
++---------------------+------------+
+| Model               | GD25Q128C  |
++---------------------+------------+
+| Size                | 16 MiB     |
++---------------------+------------+
+| Package             | SOIC-8     |
++---------------------+------------+
+| Internal flashing   | yes        |
++---------------------+------------+
+| External flashing   | yes        |
++---------------------+------------+
+```