i2c-vr: add support for MPS MP2X6XX VR firmware update over I2C

This commit introduces support for programming MPS MP2X6XX VR devices
over the I2C bus. It enables firmware updates for VR models such

i2c-vr: add support for MPS MP2X6XX VR firmware update over I2C

This commit introduces support for programming MPS MP2X6XX VR devices
over the I2C bus. It enables firmware updates for VR models such as
MP2869(A), MP29612(A), and MP29608(A).
Support for the MP2X6XXFirmware type in EM was added in [1].

[1] https://gerrit.openbmc.org/c/openbmc/entity-manager/+/82575

Tested on the Santabarbara platform:

1. Display the fw inventory
```
curl --silent $creds https://$bmc/redfish/v1/UpdateService/FirmwareInventory
```

```
{
"@odata.id": "/redfish/v1/UpdateService/FirmwareInventory",
"@odata.type": "#SoftwareInventoryCollection.SoftwareInventoryCollection",
"Members": [
{...},
{
"@odata.id": "/redfish/v1/UpdateService/FirmwareInventory/Santabarbara_MB_VR_CPU1_4228"
},
{...}
],
"Members@odata.count": 13,
"Name": "Software Inventory Collection"
}
```

2. Query version.
```
curl $creds https://$bmc/redfish/v1/UpdateService/FirmwareInventory/Santabarbara_MB_VR_CPU1_4228
```

```
{
"@odata.id": "/redfish/v1/UpdateService/FirmwareInventory/Santabarbara_MB_VR_CPU1_4228",
"@odata.type": "#SoftwareInventory.v1_1_0.SoftwareInventory",
"Description": "Unknown image",
"Id": "Santabarbara_MB_VR_CPU1_4228",
"Name": "Software Inventory",
"Status": {
"Health": "Warning",
"HealthRollup": "OK",
"State": "Disabled"
},
"Updateable": true,
"Version": "1F88"
}
```

3. Trigger the fw update via redfish.
```
curl -k ${creds} \
-H "Content-Type:multipart/form-data" \
-X POST \
-F UpdateParameters="{\"Targets\":[\"/redfish/v1/UpdateService/FirmwareInventory/Santabarbara_MB_VR_CPU1_4228\"],\"@Redfish.OperationApplyTime\":\"OnReset\"};type=application/json" \
-F "UpdateFile=@${fwpath};type=application/octet-stream" \
https://${bmc}/redfish/v1/UpdateService/update-multipart
```

4. Task is returned
```
{
"@odata.id": "/redfish/v1/TaskService/Tasks/0",
"@odata.type": "#Task.v1_4_3.Task",
"HidePayload": false,
"Id": "0",
"Messages": [
{
"@odata.type": "#Message.v1_1_1.Message",
"Message": "The task with Id '0' has started.",
"MessageArgs": [
"0"
],
"MessageId": "TaskEvent.1.0.TaskStarted",
"MessageSeverity": "OK",
"Resolution": "None."
}
],
"Name": "Task 0",
"Payload": {
"HttpHeaders": [],
"HttpOperation": "POST",
"TargetUri": "/redfish/v1/UpdateService/update-multipart"
},
"PercentComplete": 0,
"StartTime": "2025-07-29T08:51:41+00:00",
"TaskMonitor": "/redfish/v1/TaskService/TaskMonitors/0",
"TaskState": "Running",
"TaskStatus": "OK"
}
```

5. Query Task status
```
curl --silent $creds https://$bmc/redfish/v1/TaskService/Tasks/0
```

```
{
"@odata.id": "/redfish/v1/TaskService/Tasks/0",
"@odata.type": "#Task.v1_4_3.Task",
"EndTime": "2025-07-29T08:51:46+00:00",
"HidePayload": false,
"Id": "0",
"Messages": [
{
"@odata.type": "#Message.v1_1_1.Message",
"Message": "The task with Id '0' has started.",
"MessageArgs": [
"0"
],
"MessageId": "TaskEvent.1.0.TaskStarted",
"MessageSeverity": "OK",
"Resolution": "None."
},
{
"@odata.type": "#Message.v1_1_1.Message",
"Message": "The task with Id '0' has changed to progress 20 percent complete.",
"MessageArgs": [
"0",
"20"
],
"MessageId": "TaskEvent.1.0.TaskProgressChanged",
"MessageSeverity": "OK",
"Resolution": "None."
},
{
"@odata.type": "#Message.v1_1_1.Message",
"Message": "The task with Id '0' has changed to progress 50 percent complete.",
"MessageArgs": [
"0",
"50"
],
"MessageId": "TaskEvent.1.0.TaskProgressChanged",
"MessageSeverity": "OK",
"Resolution": "None."
},
{
"@odata.type": "#Message.v1_1_1.Message",
"Message": "The task with Id '0' has changed to progress 80 percent complete.",
"MessageArgs": [
"0",
"80"
],
"MessageId": "TaskEvent.1.0.TaskProgressChanged",
"MessageSeverity": "OK",
"Resolution": "None."
},
{
"@odata.type": "#Message.v1_1_1.Message",
"Message": "The task with Id '0' has changed to progress 100 percent complete.",
"MessageArgs": [
"0",
"100"
],
"MessageId": "TaskEvent.1.0.TaskProgressChanged",
"MessageSeverity": "OK",
"Resolution": "None."
},
{
"@odata.type": "#Message.v1_1_1.Message",
"Message": "The task with Id '0' has completed.",
"MessageArgs": [
"0"
],
"MessageId": "TaskEvent.1.0.TaskCompletedOK",
"MessageSeverity": "OK",
"Resolution": "None."
}
],
"Name": "Task 0",
"Payload": {
"HttpHeaders": [],
"HttpOperation": "POST",
"JsonBody": "null",
"TargetUri": "/redfish/v1/UpdateService/update-multipart"
},
"PercentComplete": 100,
"StartTime": "2025-07-29T08:51:41+00:00",
"TaskMonitor": "/redfish/v1/TaskService/TaskMonitors/0",
"TaskState": "Completed",
"TaskStatus": "OK"
}
```

6. Display the fw inventory with newly updated fw.
```
curl --silent $creds https://$bmc/redfish/v1/UpdateService/FirmwareInventory
```

```
{
"@odata.id": "/redfish/v1/UpdateService/FirmwareInventory",
"@odata.type": "#SoftwareInventoryCollection.SoftwareInventoryCollection",
"Members": [
{...},
{
"@odata.id": "/redfish/v1/UpdateService/FirmwareInventory/Santabarbara_MB_VR_CPU1_4228"
},
{
"@odata.id": "/redfish/v1/UpdateService/FirmwareInventory/Santabarbara_MB_VR_CPU1_5453"
},
{...}
],
"Members@odata.count": 14,
"Name": "Software Inventory Collection"
}
```

7. Query the new fw version.
```
curl $creds https://$bmc/redfish/v1/UpdateService/FirmwareInventory/Santabarbara_MB_VR_CPU1_5453
```

```
{
"@odata.id": "/redfish/v1/UpdateService/FirmwareInventory/Santabarbara_MB_VR_CPU1_5453",
"@odata.type": "#SoftwareInventory.v1_1_0.SoftwareInventory",
"Description": "Unknown image",
"Id": "Santabarbara_MB_VR_CPU1_5453",
"Name": "Software Inventory",
"Status": {
"Health": "OK",
"HealthRollup": "OK",
"State": "Enabled"
},
"Updateable": false,
"Version": "42C3"
}
```

8. Do AC cycle to make sure the new fw is applied.
```
busctl set-property xyz.openbmc_project.State.Chassis0 /xyz/openbmc_project/state/chassis0 \
xyz.openbmc_project.State.Chassis RequestedPowerTransition s xyz.openbmc_project.State.Chassis.Transition.PowerCycle
```

9. Display the fw inventory after AC cycle.
```
curl --silent $creds https://$bmc/redfish/v1/UpdateService/FirmwareInventory
```

```
{
"@odata.id": "/redfish/v1/UpdateService/FirmwareInventory",
"@odata.type": "#SoftwareInventoryCollection.SoftwareInventoryCollection",
"Members": [
{...},
{
"@odata.id": "/redfish/v1/UpdateService/FirmwareInventory/Santabarbara_MB_VR_CPU1_2249"
},
{...}
],
"Members@odata.count": 13,
"Name": "Software Inventory Collection"
}
```

10. Query the fw version after AC cycle.
```
curl $creds https://$bmc/redfish/v1/UpdateService/FirmwareInventory/Santabarbara_MB_VR_CPU1_2249
```

```
{
"@odata.id": "/redfish/v1/UpdateService/FirmwareInventory/Santabarbara_MB_VR_CPU1_2249",
"@odata.type": "#SoftwareInventory.v1_1_0.SoftwareInventory",
"Description": "Unknown image",
"Id": "Santabarbara_MB_VR_CPU1_2249",
"Name": "Software Inventory",
"Status": {
"Health": "Warning",
"HealthRollup": "OK",
"State": "Disabled"
},
"Updateable": true,
"Version": "42C3"
}
```

Change-Id: Ifa6fdd79f5d087adb6037e0043897fa6199ae097
Signed-off-by: Kevin Tung <Kevin.Tung@quantatw.com>

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