gc2: es: Enhance VR fault handling with CPLD indicators

[Joseph-Shih-ww]

[Task Description]

• Related to GC20T5T7-362
• Enhance the existing VR power fault handling mechanism by using the new CPLD power fault indicator registers introduced in CPLD FW 0x00060303.
• The new indicators are used when the BIC handles VR power fault events to identify the affected power rail.
• This improves VR fault-source identification by using dedicated CPLD live fault status instead of relying on PWRGD status.

[Motivation]

• CPLD FW 0x00060303 introduces BIC I2C register offsets 0x11 and 0x12 for power fault indicators.
• The existing VR fault handling relies on PWRGD status, which does not directly represent the dedicated power fault indication provided by the CPLD.
• Using the new CPLD fault indicators provides more direct and accurate fault-source identification.

[Design]

• Add CPLD register 0x11 and 0x12 definitions for VR power fault status.
• Update the VR fault mapping table to use the corresponding CPLD live fault bits for each supported power rail.
• Keep the BIC and BMC VR fault source mappings aligned.
• Use the cached VR module type during VR fault handling.
• Remove the previous E1S power-enable filtering because the CPLD provides live fault status.

[Test Log]

• Verified the CPLD 0x11 and 0x12 fault-bit mappings against the CPLD FW 0x00060303 register definition.
• Confirmed the expected VR_FAULT SEL is generated with the correct fault source.
  • PMBus '''
    root@bmc-oob:/mnt/data# bic-util server 0x18 0x52 0x09 0xc0 0x00 0x00 0x01;bic-util server 0x18 0x52 0x09 0xc0 0x00 0x55 0x01 0x00

root@bmc-oob:/mnt/data# bic-util server 0x18 0x52 0x00 0x42 0x01 0x12 12
root@bmc-oob:/mnt/data# bic-util server --get_gpio |grep FORCE 31 FM_FORCE_ADR_N_R: 0
root@bmc-oob:/mnt/data# log-util all --print
2026 Oct 11 18:54:52 log-util: User cleared all logs
0 all 2026-10-11 18:54:54 healthd ASSERT: Verified boot failure (3,35)
0 all 2026-10-11 18:54:54 healthd Verified boot failure reason: U-Boot FIT did not contain the /keys node
1 server 2026-10-11 18:55:37 ipmid SEL Entry: FRU: 1, Record: Facebook Unified SEL (0xFB), GeneralInfo: POST(0x28), POST Failure Event: System HTTP boot fail, Fail Type: IPv6 fail, Error Code: 0x63
1 server 2026-10-11 18:56:41 ipmid SEL Entry: FRU: 1, Record: Facebook Unified SEL (0xFB), GeneralInfo: POST(0x28), POST Failure Event: System HTTP boot fail, Fail Type: IPv6 fail, Error Code: 0x63
1 server 2026-10-11 18:57:46 ipmid SEL Entry: FRU: 1, Record: Facebook Unified SEL (0xFB), GeneralInfo: POST(0x28), POST Failure Event: System PXE boot fail, Fail Type: IPv6 fail, Error Code: 0x10
1 server 2026-10-11 19:15:19 ipmid SEL Entry: FRU: 1, Record: Standard (0x02), Time: 2026-10-11 19:15:19, Sensor: VR_FAULT (0xB1), Event Data: (003841) PVCCIN_CPU0 status: 0x3841 Assertion
1 server 2026-10-11 19:15:19 ipmid SEL Entry: FRU: 1, Record: Standard (0x02), Time: 2026-10-11 19:15:19, Sensor: VR_FAULT (0xB1), Event Data: (007841) PVCCIN_CPU0 status: 0x7841 Assertion
1 server 2026-10-11 19:15:19 ipmid SEL Entry: FRU: 1, Record: Standard (0x02), Time: 2026-10-11 19:15:19, Sensor: VR_FAULT (0xB1), Event Data: (007A00) PVCCIN_CPU0 status: 0x7a00 Assertion
1 server 2026-10-11 19:15:19 ipmid SEL Entry: FRU: 1, Record: Standard (0x02), Time: 2026-10-11 19:15:19, Sensor: VR_FAULT (0xB1), Event Data: (007B00) PVCCIN_CPU0 status: 0x7b00 Assertion
1 server 2026-10-11 19:15:19 ipmid SEL Entry: FRU: 1, Record: Standard (0x02), Time: 2026-10-11 19:15:19, Sensor: VR_FAULT (0xB1), Event Data: (007C80) PVCCIN_CPU0 status: 0x7c80 Assertion
1 server 2026-10-11 19:15:19 ipmid SEL Entry: FRU: 1, Record: Standard (0x02), Time: 2026-10-11 19:15:19, Sensor: VR_FAULT (0xB1), Event Data: (007D00) PVCCIN_CPU0 status: 0x7d00 Assertion
1 server 2026-10-11 19:15:19 ipmid SEL Entry: FRU: 1, Record: Standard (0x02), Time: 2026-10-11 19:15:19, Sensor: VR_FAULT (0xB1), Event Data: (007E00) PVCCIN_CPU0 status: 0x7e00 Assertion
1 server 2026-10-11 19:15:19 ipmid SEL Entry: FRU: 1, Record: Standard (0x02), Time: 2026-10-11 19:15:19, Sensor: VR_FAULT (0xB1), Event Data: (007F00) PVCCIN_CPU0 status: 0x7f00 Assertion
1 server 2026-10-11 19:15:19 ipmid SEL Entry: FRU: 1, Record: Standard (0x02), Time: 2026-10-11 19:15:19, Sensor: VR_FAULT (0xB1), Event Data: (008002) PVCCIN_CPU0 status: 0x8002 Assertion
1 server 2026-10-11 19:15:19 ipmid SEL Entry: FRU: 1, Record: Standard (0x02), Time: 2026-10-11 19:15:19, Sensor: VR_FAULT (0xB1), Event Data: (013841) PVCCFA_EHV_FIVRA_CPU0 status: 0x3841 Assertion
1 server 2026-10-11 19:15:19 ipmid SEL Entry: FRU: 1, Record: Standard (0x02), Time: 2026-10-11 19:15:19, Sensor: VR_FAULT (0xB1), Event Data: (017841) PVCCFA_EHV_FIVRA_CPU0 status: 0x7841 Assertion
1 server 2026-10-11 19:15:19 ipmid SEL Entry: FRU: 1, Record: Standard (0x02), Time: 2026-10-11 19:15:19, Sensor: VR_FAULT (0xB1), Event Data: (017A00) PVCCFA_EHV_FIVRA_CPU0 status: 0x7a00 Assertion
1 server 2026-10-11 19:15:19 ipmid SEL Entry: FRU: 1, Record: Standard (0x02), Time: 2026-10-11 19:15:19, Sensor: VR_FAULT (0xB1), Event Data: (017B00) PVCCFA_EHV_FIVRA_CPU0 status: 0x7b00 Assertion
1 server 2026-10-11 19:15:19 ipmid SEL Entry: FRU: 1, Record: Standard (0x02), Time: 2026-10-11 19:15:19, Sensor: VR_FAULT (0xB1), Event Data: (017C80) PVCCFA_EHV_FIVRA_CPU0 status: 0x7c80 Assertion
1 server 2026-10-11 19:15:19 ipmid SEL Entry: FRU: 1, Record: Standard (0x02), Time: 2026-10-11 19:15:19, Sensor: VR_FAULT (0xB1), Event Data: (017D00) PVCCFA_EHV_FIVRA_CPU0 status: 0x7d00 Assertion
1 server 2026-10-11 19:15:19 ipmid SEL Entry: FRU: 1, Record: Standard (0x02), Time: 2026-10-11 19:15:19, Sensor: VR_FAULT (0xB1), Event Data: (017E00) PVCCFA_EHV_FIVRA_CPU0 status: 0x7e00 Assertion
1 server 2026-10-11 19:15:19 ipmid SEL Entry: FRU: 1, Record: Standard (0x02), Time: 2026-10-11 19:15:19, Sensor: VR_FAULT (0xB1), Event Data: (017F00) PVCCFA_EHV_FIVRA_CPU0 status: 0x7f00 Assertion
1 server 2026-10-11 19:15:19 ipmid SEL Entry: FRU: 1, Record: Standard (0x02), Time: 2026-10-11 19:15:19, Sensor: VR_FAULT (0xB1), Event Data: (018002) PVCCFA_EHV_FIVRA_CPU0 status: 0x8002 Assertion
1 server 2026-10-11 19:15:20 gpiod FRU: 1, Server is powered off
1 server 2026-10-11 19:15:24 ipmid SEL Entry: FRU: 1, Record: Standard (0x02), Time: 2026-10-11 19:15:24, Sensor: ME_POWER_STATE (0x16), Event Data: (000000) RUNNING Assertion
1 server 2026-10-11 19:15:33 ipmid SEL Entry: FRU: 1, Record: Standard (0x02), Time: 2026-10-11 19:15:33, Sensor: SYSTEM_STATUS (0x10), Event Data: (0AFFFF) SYS_VRWATCHDOG Assertion
root@bmc-oob:/mnt/data#
'''

• Non-PMBus

root@bmc-oob:~#  bic-util server 0x18 0x52 0x00 0x42 0x00 0x18 0x02

root@bmc-oob:~#  bic-util server 0x18 0x52 0x00 0x42 0x01 0x11
02
root@bmc-oob:~# log-util all --print |grep -i 1v8
1    server   2026-10-11 20:27:12    ipmid            SEL Entry: FRU: 1, Record: Standard (0x02), Time: 2026-10-11 20:27:12, Sensor: VR_FAULT (0xB1), Event Data: (06FFFF) P1V8_STBY status: 0xffff Assertion

[meta-codesync]

This pull request has been imported. If you are a Meta employee, you can view this in D124729908. (Because this pull request was imported automatically, there will not be any future comments.)

[meta-codesync]

This pull request has been merged in ad02eee.