[L] Change in coreboot[main]: mainboard: Add MiTAC Computing Whitestone-2 (LGA-4677)

[Lean Sheng Tan (Code Review)]

Attention is currently required from: Angel Pons, Arthur Heymans, Christian Walter, Jincheng Li, Mark Chang, Patrick Rudolph, Paul Menzel, [e-mail], [e-mail].

Lean Sheng Tan has uploaded a new patch set (#7) to the change originally created by Mark Chang. ( https://review.coreboot.org/c/coreboot/+/85532?usp=email )

Change subject: mainboard: Add MiTAC Computing Whitestone-2 (LGA-4677)
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mainboard: Add MiTAC Computing Whitestone-2 (LGA-4677)

The MiTAC Computing Whitestone2 O-RAN CU/DU Edge Server is a compact
and highly efficient 1U rackmount solution designed for edge computing
in O-RAN (Open Radio Access Network) environments. Featuring support
for the 4th Gen Intel® Xeon® Scalable Processor Edge Enhanced Product
Family, it delivers robust performance with a single socket (LGA-4677)
that supports up to 205W TDP. The server provides excellent memory
capabilities with 8 DDR5 RDIMM slots supporting 4400 MHz speeds across
8 channels per CPU.

Working:
 - All eight DIMM slots
 - Serial port to emit spam
 - POST code display
 - Front USB 2.0 port
 - Front Intel E810 CAM1 (25Gbps x 4)
 - Front Intel E810 CAM2 (25Gbps x 4 / 10Gbps x 8)
 - M.2 2280/22110 slot x 2 (Gen3 x4)
 - Flashing internally with flashrom

Untested for now (i.e. should work, will eventually test):
 - Riser PCIe Gen.4 x16 slots x 2 (FHHL)

Others:
 - The board boots to Ubuntu 22.04.2 (5.15.0-1032-realtime) with all
   40 cores (Intel 5433n) available.
 - FlexRAN 23.11 + DPDK 22.11.1 + ACC200 O-RU + O-DU long-run test
   pass.

Change-Id: Icf625cf8e9c76ef08411614c15ee43d0c459b905
Signed-off-by: Mark Chang 
---
A configs/config.mitaccomputing_ws_2
A src/mainboard/mitaccomputing/Kconfig
A src/mainboard/mitaccomputing/Kconfig.name
A src/mainboard/mitaccomputing/whitestone-2/Kconfig
A src/mainboard/mitaccomputing/whitestone-2/Kconfig.name
A src/mainboard/mitaccomputing/whitestone-2/Makefile.mk
A src/mainboard/mitaccomputing/whitestone-2/acpi/platform.asl
A src/mainboard/mitaccomputing/whitestone-2/board.fmd
A src/mainboard/mitaccomputing/whitestone-2/board_info.txt
A src/mainboard/mitaccomputing/whitestone-2/bootblock.c
A src/mainboard/mitaccomputing/whitestone-2/devicetree.cb
A src/mainboard/mitaccomputing/whitestone-2/dsdt.asl
A src/mainboard/mitaccomputing/whitestone-2/include/smbios_onboard.h
A src/mainboard/mitaccomputing/whitestone-2/include/spr_ws_2_gpio.h
A src/mainboard/mitaccomputing/whitestone-2/include/sprsp_ws_2_iio.h
A src/mainboard/mitaccomputing/whitestone-2/mainboard.c
A src/mainboard/mitaccomputing/whitestone-2/ramstage.c
A src/mainboard/mitaccomputing/whitestone-2/romstage.c
18 files changed, 739 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/32/85532/7