tree 5f7d222ef10be83abf4fcdd43ec2e17d536fa7f0
parent ab989dc6b5d07532b4ce3f8edee45074236254c2
author Yikai Tsai <yikai.tsai.wiwynn@gmail.com> 1721719251 +0800
committer Patrick Williams <patrick@stwcx.xyz> 1721998646 +0000

meta-facebook: yosemite4: Power fault event

Summary:
The system shall register an event in the case of BIC and CPU power fault.
BMC is triggered by INT_SMB_BMC_SLOT1_4_N or INT_SMB_BMC_SLOT5_8_N, checking
which SLOT got power fault via reading the MUX (i2c-bus 8, 0x70 for SLOT1-4,
and i2c-bus 9, 0x71 for SLOT1-4).
Then, BMC reads CPLD IOE for each failed SLOT to check affected power rails.

For BIC power fault, check address 0x24, port 1:

bit
[1]	PWRGD_P1V2_STBY_FAULT
[0]	PWRGD_P1V8_STBY_FAULT

For CPU power fault, check address 0x24, port 2:

bit
[4]	PWRGD_PVDD11_S3_R_FAULT
[3]	PWRGD_PVDDIO_FAULT
[2]	PWRGD_PVDDCR_CPU1_FAULT
[1]	PWRGD_PVDDCR_SOC_FAULT
[0]	PWRGD_PVDDCR_CPU0_FAULT

Test Plan:
Trigger power fault by setting CPLD (0x0F) on server board
to pull INT_SMB_BMC_SLOT1_4_N or INT_SMB_BMC_SLOT5_8_N low.

Testing:
Take SLOT2 for example.

1. Check gpio status
root@bmc:~# cat /sys/kernel/debug/gpio | grep -i 1_4
 gpio-612 (INT_SMB_BMC_SLOT1_4_|gpio_monitor        ) in  hi IRQ

2. Check (1 to 4)MUX status
root@bmc:~# i2ctransfer -f -y 8 w1@0x70 0 r1
0x00

3. Check SLOT2 CPLD IOE status
root@bmc:~# i2ctransfer -y -f 1 w1@0x24 0x01 r1
0x00
root@bmc:~# i2ctransfer -y -f 1 w1@0x24 0x02 r1
0x00

4. Trigger power fault by setting CPLD (0x0F) on server board
root@bmc:~# i2ctransfer -y -f 1 w2@0xf 0x3f 0x1

5. Check event log
root@bmc:~# mfg-tool log-display
...
    },
    "2": {
        "additional_data": [
            "FAULT=PWRGD_P1V8_STBY_FAULT"
        ],
        "event_id": "",
        "message": "SLOT2 AC Power Fault",
        "resolution": "",
        "resolved": false,
        "severity": "xyz.openbmc_project.Logging.Entry.Level.Error",
        "timestamp": "2024-07-18T08:37:13.179000000Z",
        "updated_timestamp": "2024-07-18T08:37:13.179000000Z"
    },
    "3": {
        "additional_data": [
            "FAULT=PWRGD_PVDDCR_CPU0_FAULT"
        ],
        "event_id": "",
        "message": "SLOT2 DC Power Fault",
        "resolution": "",
        "resolved": false,
        "severity": "xyz.openbmc_project.Logging.Entry.Level.Error",
        "timestamp": "2024-07-18T08:37:13.231000000Z",
        "updated_timestamp": "2024-07-18T08:37:13.231000000Z"
    }

6. Check gpio status
root@bmc:~# cat /sys/kernel/debug/gpio | grep -i 1_4
 gpio-612 (INT_SMB_BMC_SLOT1_4_|gpio_monitor        ) in  lo IRQ

7. Check (1 to 4)MUX status
root@bmc:~# i2ctransfer -f -y 8 w1@0x70 0 r1
0x20

8. Check SLOT2 CPLD IOE status
root@bmc:~# i2ctransfer -y -f 1 w1@0x24 0x01 r1
0x01
root@bmc:~# i2ctransfer -y -f 1 w1@0x24 0x02 r1
0x01

Change-Id: I67b93e9a55c949af54aee4ca90dc998448bdfdcc
Signed-off-by: Yikai Tsai <yikai.tsai.wiwynn@gmail.com>