Add initial support for the LattePanda Mu board, which features:
- Intel Alder Lake-N N100 processor
- Samsung K3LK7K70BM-BGCP, 8GB LPDDR5 memory
- Samsung KLMCG2UCTA-B041, 64GB eMMC storage
- SO-DIMM 260-pin connector for function expansion
This commit includes:
- Basic board configuration
- Memory initialization
- Essential I/O setup
- Used UEFITool NE alpha 68 (Nov 4 2023) to extract data.vbt file
from original BIOS
- BIOS download link: https://github.com/LattePandaTeam/LattePanda-Mu
located at "./Softwares/BIOS/DFLT/LP-BS-S70NC1R200-SR-A.bin.zip"
Test Environment:
- Carrier Board: Lite
- Payload: mrchromebox/edk2
- EDK2 Version: uefipayload_202309
Test result
Passed:
- Windows 11 boot from eMMC
- Install Ubuntu 24.04 on NVMe SSD
- Ubuntu 24.04 boot from NVMe SSD
- USB 3.0/2.0 functionality
- Realtek RTL8111H-CG-RH Ethernet
- HDMI Display
- Audio over HDMI work in Ubuntu 24.04
Known Issues:
- S3 sleep mode non-functional
- Power-on after shutdown requires power removal
- SuperIO UART not detected in Windows 11
- Audio over HDMI not work in Windows 11
- Windows 11 BSOD occurs with NVMe SSD installed:
- Stop code: Machine Check Exception
- NVMe SSD not working on Windows 11, except when:
- KDNet Debugging enabled on NIC during boot
- SSD becomes functional in this scenario
Change-Id: I79696bdd837a221860b32f54629212c3346dca66
Signed-off-by: KunYi Chen <kunyi.chen@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83719
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
