Hi Zev

     That maybe occurred question when I copied the log.
    
      I mainly care that why entity manager did not start and there is no service in /lib/system/systemd.
```
root@sky:/lib/systemd/system# ls xyz.openbmc_project.EntityManager
ls: xyz.openbmc_project.EntityManager: No such file or directory
root@sky:/lib/systemd/system# ls *EntityManager*
ls: *EntityManager*: No such file or directory
root@sky:/lib/systemd/system# systemctl xyz.openbmc_project.EntityManager
Unknown command verb xyz.openbmc_project.EntityManager.
root@sky:/lib/systemd/system#
```

At 2022-02-17 19:10:33, "damon3000" <damon3000@163.com> wrote:

Hi Patrick,

  1.  According to your suggestion, I can scan my FRU information via busctl command, but entity-manager did not start and can not be accessed.
The log is as below:
"
busctl tree --no-pager xyz.openbmc_project.FruDevice
`-/xyz
  `-/xyz/openbmc_project
    `-/xyz/openbmc_project/FruDevice
      |-/xyz/openbmc_project/FruDevice/10_64
      |-/xyz/openbmc_project/FruDevice/10_65
      |-/xyz/openbmc_project/FruDevice/10_67
      |-/xyz/openbmc_project/FruDevice/3_80
      |-/xyz/openbmc_project/FruDevice/6_72
      |-/xyz/openbmc_project/FruDevice/6_74
      |-/xyz/openbmc_project/FruDevice/6_76
      |-/xyz/openbmc_project/FruDevice/7_81
      |-/xyz/openbmc_project/FruDevice/7_89
      `-/xyz/openbmc_project/FruDevice/test

busctl introspect --no-pager xyz.openbmc_project.FruDevice \
>  /xyz/openbmc_project/FruDevice/test
NAME                                TYPE      SIGNATURE RESULT/VALUE                       FLAGS
org.freedesktop.DBus.Introspectable interface -         -                                  -
.Introspect                         method    -         s                                  -
org.freedesktop.DBus.Peer           interface -         -                                  -
.GetMachineId                       method    -         s                                  -
.Ping                               method    -         -                                  -
org.freedesktop.DBus.Properties     interface -         -                                  -
.Get                                method    ss        v                                  -
.GetAll                             method    s         a{sv}                              -
.Set                                method    ssv       -                                  -
.PropertiesChanged                  signal    sa{sv}as  -                                  -
xyz.openbmc_project.FruDevice       interface -         -                                  -
.ADDRESS                            property  u         80                                 emits-change
.BOARD_FRU_VERSION_ID               property  s         "UVD050"                           emits-change
.BOARD_INFO_AM1                     property  s         "V1  "                             emits-change
.BOARD_INFO_AM2                     property  s         "0123456789ABCDE001TAG0000002  " emits-change
.BOARD_INFO_AM3                     property  s         "R1B "                             emits-change
.BOARD_INFO_AM4                     property  s         "XX1 "                             emits-change
.BOARD_INFO_AM5                     property  s         "0E11223344E0"                     emits-change
.BOARD_INFO_AM6                     property  s         "02"                               emits-change
.BOARD_LANGUAGE_CODE                property  s         "0"                                emits-change
.BOARD_MANUFACTURER                 property  s         "Huaqin Telecom  "                 emits-change
.BOARD_MANUFACTURE_DATE             property  s         "1996-07-07 - 10:57:00"            emits-change
.BOARD_PART_NUMBER                  property  s         "NA                  "             emits-change
.BOARD_PRODUCT_NAME                 property  s         "test              "             emits-change
.BOARD_SERIAL_NUMBER                property  s         "3120E33900011X0010            " emits-change

root@sky:/etc/default/obmc/eeproms/system/chassis# echo "24c64 0x50 > /sys/bus/i2c/devices/i2c-3/new_device"
24c64 0x50 > /sys/bus/i2c/devices/i2c-3/new_device
root@sky:/etc/default/obmc/eeproms/system/chassis# busctl tree --no-pager xyz.openbmc_project.EntityManager
Failed to introspect object / of service xyz.openbmc_project.EntityManager: The name is not activatable
No objects discovered.
"

I modified one of the configuration which is in entity-manager/configuration folder, its name is Mt_jade.json, The modification is as below from line 759:
      "Name": "$bus test",
      "Probe": "xyz.openbmc_project.FruDevice({'PRODUCT_PRODUCT_NAME': 'test'})",
        "Type": "Chassis",

Still occurred the above log.

2. According to meta-quanta's commit, I did not find they modify entity-manager/configuration files. And I tried the method, however I can not display them to "ipmitool fru"

"
commit 0de4856d037ff2525b3dd74ce2cbafdd4dcff443
Author: Joseph Fu <joseph.fu@quantatw.com>
Date:   Wed Jan 26 14:37:42 2022 +0800

    meta-quanta: s6q: add fru yaml config files
    
    Add fru setting config and device json file.
"

Could you provide some suggestions?







At 2022-02-16 03:34:38, "Patrick Williams" <patrick@stwcx.xyz> wrote:
>On Tue, Feb 15, 2022 at 11:13:22AM +0800, damon3000 wrote:
>> Hi All,
>> 
>> I am new to openbmc. I am started porting openbmc features to new hardware.
>> So, I want to add support for FRUID EEPROM. FRUID contents should be available as dbus objects. What changes needs to done in the application side.
>> 
>> Please provide the steps or suggestions to follow.
>
>You should probably look at https://github.com/openbmc/entity-manager and
>existing systems that leverage it.  There is already support for specifying the
>location of your EEPROM and interpreting it / exposing as dbus objects.
>
>'FruDevice' is typically involved in the EEPROM parsing and then there is
>entity-manager JSON that exposes specific EEPROM fields as the Inventory
>object(s).
>
>-- 
>Patrick Williams