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

From: "P. Priyatharshan" <PriyatharshanP@hcl.com>
To: "openbmc@lists.ozlabs.org" <openbmc@lists.ozlabs.org>,
	"anoo@us.ibm.com" <anoo@us.ibm.com>,
	"gmills@linux.vnet.ibm.com" <gmills@linux.vnet.ibm.com>,
	"mine260309@gmail.com" <mine260309@gmail.com>,
	"ratagupt@linux.vnet.ibm.com" <ratagupt@linux.vnet.ibm.com>,
	"ojayanth@in.ibm.com" <ojayanth@in.ibm.com>
Cc: "Velumani T-ERS, HCLTech" <velumanit@hcl.com>,
	Sundaramoorthy Thiyagarajan <sundaramoorthyt@hcl.com>
Subject: Multi host bios upgrade support in phosphor-bmc-code-mgmt:
Date: Mon, 21 Sep 2020 17:49:14 +0000	[thread overview]
Message-ID: <TY2PR04MB33112E61CA54FE1A17D30B70CA3A0@TY2PR04MB3311.apcprd04.prod.outlook.com> (raw)
Message-ID: <20200921174914.g56WFG0idyeXDwCZfVi2U2yTpg-S4b0qrnlphfQO3Jo@z> (raw)

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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@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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