Chromebook Plus - AlderLake-N [YAVIKS] - with UFS Drive not detected after coreboot flashed

Support
1

on Coreboot 4.21.1 10/29/2023 and not detecting the onboard UFS Drive on both windows live and federa live

both
CBmem and dmesg logs here:

i can revert back to Stock ChromeOS and grab dmesg there too if needed.

2

just tried coreboot 4.22.0 12/22/2023
still not detected

3

tried reverting back to stock (can’t seem to restore ChromeOS via USB or Internet Recovery anymore but- im booting to ChromeOS recovery) and seeing the Recovery logs directly
– did notice all the partitions on:
pci0000:00/0000:00:12.7

no Nvme found:
pci0000:00/0000:00:1c./0000: :00.0/nvme
neither eMMC found:
pci0000:00/0000:00:1a.0/mmc*/mmc* :00*

on CBMEM above - did find these related to 12.7:
[INFO ] PCI 12.7, PIN C, using IRQ #22
and
[INFO ] PCI: Static device PCI: 00:12.7 not found, disabling it.

could that mean UFS not enabled on coreboot?

—PCI listing in Linux
[liveuser@localhost-live ~]$ lspci -nn
00:00.0 Host bridge [0600]: Intel Corporation Device [8086:4617]
00:02.0 VGA compatible controller [0300]: Intel Corporation Device [8086:46d0]
00:04.0 Signal processing controller [1180]: Intel Corporation Alder Lake Innovation Platform Framework Processor Participant [8086:461d]
00:08.0 System peripheral [0880]: Intel Corporation Device [8086:467e]
00:0a.0 Signal processing controller [1180]: Intel Corporation Platform Monitoring Technology [8086:467d] (rev 01)
00:0d.0 USB controller [0c03]: Intel Corporation Device [8086:464e]
00:14.0 USB controller [0c03]: Intel Corporation Device [8086:54ed]
00:14.2 RAM memory [0500]: Intel Corporation Device [8086:54ef]
00:15.0 Serial bus controller [0c80]: Intel Corporation Device [8086:54e8]
00:15.1 Serial bus controller [0c80]: Intel Corporation Device [8086:54e9]
00:15.2 Serial bus controller [0c80]: Intel Corporation Device [8086:54ea]
00:15.3 Serial bus controller [0c80]: Intel Corporation Device [8086:54eb]
00:16.0 Communication controller [0780]: Intel Corporation Device [8086:54e0]
00:19.0 Serial bus controller [0c80]: Intel Corporation Device [8086:54c5]
00:19.1 Serial bus controller [0c80]: Intel Corporation Device [8086:54c6]
00:1c.0 PCI bridge [0604]: Intel Corporation Device [8086:54bb]
00:1c.6 PCI bridge [0604]: Intel Corporation Device [8086:54be]
00:1e.0 Communication controller [0780]: Intel Corporation Device [8086:54a8]
00:1f.0 ISA bridge [0601]: Intel Corporation Device [8086:5481]
00:1f.3 Multimedia audio controller [0401]: Intel Corporation Device [8086:54c8]
00:1f.5 Serial bus controller [0c80]: Intel Corporation Device [8086:54a4]
01:00.0 Network controller [0280]: MEDIATEK Corp. MT7921 802.11ax PCI Express Wireless Network Adapter [14c3:7961]
02:00.0 SD Host controller [0805]: Genesys Logic, Inc GL9750 SD Host Controller [17a0:9750] (rev 01)

4

Welp - tried 4.22.2 and still no UFS Drive detection.

BUMP

acpidump -b (zipped)

lspci -nn
00:00.0 Host bridge [0600]: Intel Corporation Device [8086:4617]
00:02.0 VGA compatible controller [0300]: Intel Corporation Device [8086:46d0]
00:04.0 Signal processing controller [1180]: Intel Corporation Alder Lake Innovation Platform Framework Processor Participant [8086:461d]
00:08.0 System peripheral [0880]: Intel Corporation Device [8086:467e]
00:0a.0 Signal processing controller [1180]: Intel Corporation Platform Monitoring Technology [8086:467d] (rev 01)
00:0d.0 USB controller [0c03]: Intel Corporation Device [8086:464e]
00:14.0 USB controller [0c03]: Intel Corporation Device [8086:54ed]
00:14.2 RAM memory [0500]: Intel Corporation Device [8086:54ef]
00:15.0 Serial bus controller [0c80]: Intel Corporation Device [8086:54e8]
00:15.1 Serial bus controller [0c80]: Intel Corporation Device [8086:54e9]
00:15.2 Serial bus controller [0c80]: Intel Corporation Device [8086:54ea]
00:15.3 Serial bus controller [0c80]: Intel Corporation Device [8086:54eb]
00:16.0 Communication controller [0780]: Intel Corporation Device [8086:54e0]
00:19.0 Serial bus controller [0c80]: Intel Corporation Device [8086:54c5]
00:19.1 Serial bus controller [0c80]: Intel Corporation Device [8086:54c6]
00:1c.0 PCI bridge [0604]: Intel Corporation Device [8086:54bb]
00:1c.6 PCI bridge [0604]: Intel Corporation Device [8086:54be]
00:1e.0 Communication controller [0780]: Intel Corporation Device [8086:54a8]
00:1f.0 ISA bridge [0601]: Intel Corporation Device [8086:5481]
00:1f.3 Multimedia audio controller [0401]: Intel Corporation Device [8086:54c8]
00:1f.5 Serial bus controller [0c80]: Intel Corporation Device [8086:54a4]
01:00.0 Network controller [0280]: MEDIATEK Corp. MT7921 802.11ax PCI Express Wireless Network Adapter [14c3:7961]
02:00.0 SD Host controller [0805]: Genesys Logic, Inc GL9750 SD Host Controller [17a0:9750] (rev 01)