mb/hp/280_g2: Add new mainboard

This is a µATX mainboard with a LGA1151 socket and two DDR4 DIMM slots.

There are two possible BOM configurations: Sid has no legacy devices,
whereas Manny provides two serial ports, a parallel port, a PCI slot
and PS/2 keyboard/mouse connectors. These boards also have different
Super I/O models: Manny uses an ITE IT8625E, whereas legacy-free Sid
comes with an ITE IT8656E instead.

This coreboot port has been done using a Sid board, thus support for
Manny-specific features is missing. Booting should still be possible,
though: none of these legacy features is essential.

The board has an unpopulated 6-pin header, wired to PCH UART 2. This
can be used to retrieve coreboot logs.

Working:
- Both DIMM slots (Micron CT4G4DFS8213.8FA11, Hynix HMA851U6AFR6N-UH)
- PCH SerialIO UART 2 to get coreboot logs
- Rear USB ports
- Realtek RTL8111 GbE NIC
- Integrated graphics on DVI with libgfxinit
- At least one SATA port
- Flashing internally with flashrom
- S3 suspend/resume
- VBT
- SeaBIOS 1.14 to boot Arch Linux (kernel linux-5.10.15.arch1-1)

Untested:
- Audio
- VGA: DP2VGA chip uses DDI E, and libgfxinit doesn't support DDI E yet
- Front USB headers
- Non-Linux OSes
- PCI slot
- IT8625E peripherals: serial, parallel and PS/2 ports

Change-Id: Iadf11c187307a24b15039a5a716737d9d74944e6
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48386
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions