Multi host bios upgrade support in phosphor-bmc-code-mgmt:

[P. Priyatharshan]

Hi ,

Phosphor-software-manager currently supports bios upgrade for a single host.I would like to propose a design to add multi host bios upgrade support in Phosphor-software-manager.

Kindly review the below proposal and share your valuable comments.

Design:

a) : Add Host Number

1) MANIFEST file change:

Add  host number in MANIFEST file, purpose field like below.

Ex:
For Host1,  purpose=xyz.openbmc_project.Software.Version.VersionPurpose.Host1
For Host2,  purpose=xyz.openbmc_project.Software.Version.VersionPurpose.Host2 and So on.

2) For bios upgrade, handle the same to incorporate the host number and send host number to the systemd service obmc-flash-host-bios at service like below.

  if (host.empty())
    {
        auto biosServiceFile = "obmc-flash-host-bios@" + versionId + ".service";
    }
    else
    {
        auto biosServiceFile =
            "obmc-flash-host-bios@" + versionId + "_" + host + ".service";
    }

b) : Implement a generic IPMI based multi-host bios upgrade.

1) This generic implementation expects a json config file with the details like IPMI net function , command id, and etc and process the bios upgrade via ipmi commands.


Thanks,
Priyatharshan P
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