Read Firmware Versions

Vijay Khemka vijaykhemka at fb.com
Wed Sep 23 06:52:18 AEST 2020



On 9/22/20, 6:37 AM, "openbmc on behalf of Jayashree D" <openbmc-bounces+vijaykhemka=fb.com at lists.ozlabs.org on behalf of jayashree-d at hcl.com> wrote:

    Classification: HCL Internal

    Thanks Patrick for your response.

    In phosphor-bmc-code-mgmt, I am seeing the software image is upgraded and based on the image update, version is updated.
    But in my platform, I have to read firmware versions using oem commands and that version should be displayed under dbus objects.

Those oem command needs to read firmware version from dbus interface if there are any exposed. I am not sure how much  we are exposing firmware version currently.

    Whether phosphor-bmc-code-mgmt repo will be suitable to display the firmware version using dbus objects?

    Regards,
    Jayashree

    -----Original Message-----
    From: Patrick Williams <patrick at stwcx.xyz>
    Sent: Monday, September 21, 2020 8:54 PM
    To: Jayashree D <jayashree-d at hcl.com>
    Cc: openbmc at lists.ozlabs.org; Velumani T-ERS,HCLTech <velumanit at hcl.com>
    Subject: Re: Read Firmware Versions

    On Mon, Sep 21, 2020 at 02:12:55PM +0000, Jayashree D wrote:
    > We are working on a platform which has multi host and each host have firmware versions such as CPLD, ME, BIOS, Bridge IC and VR.
    > We have to display it in dbus objects.
    > Can you please provide your comments on which dbus objects it will be suitable to store all firmware versions.
    >
    > Also in phosphor-dbus-interfaces, I am seeing "System.interface.yaml" in /xyz/openbmc_project/Inventory/Item/.
    > Whether it will be suitable to store all the firmware versions (/xyz/openbmc_project/Inventory/Item/System/HostN).

    All software versions should be modelled per [1].  The sub-section [2] tells how to associate an inventory object to a software version (to show which BIOS version a specific host card is running for example).

    I don't think 'Inventory.Item.System' is intended to represent a single host in a multi-host system; 'System' would represent the entire chassis.  You may want to use 'Chassis' or 'Board' to model a sub-assembly.


    1. https://github.com/openbmc/phosphor-dbus-interfaces/tree/master/xyz/openbmc_project/Software
    2. https://github.com/openbmc/phosphor-dbus-interfaces/tree/master/xyz/openbmc_project/Software#find-all-software-versions-on-a-managed-element

    --
    Patrick Williams
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