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Thu, 28 Jan 2021 18:17:45 +0000 Subject: Re: Progress Codes in BMC To: Benjamin Fair References: <4795347F-477D-45EF-A145-0C7B163FE01B@getmailspring.com> <7821f27b-31d5-a9d9-a6e6-d709e5456af5@amd.com> From: Supreeth Venkatesh Message-ID: <407d669d-a60f-7052-23d7-ce3b884e833a@amd.com> Date: Thu, 28 Jan 2021 12:17:44 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [165.204.77.1] X-ClientProxiedBy: SA0PR11CA0066.namprd11.prod.outlook.com (2603:10b6:806:d2::11) To SN1PR12MB2542.namprd12.prod.outlook.com (2603:10b6:802:26::28) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from [10.236.136.123] (165.204.77.1) by SA0PR11CA0066.namprd11.prod.outlook.com (2603:10b6:806:d2::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3805.16 via Frontend Transport; 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These are generated by applications on the BMC & host to show their progress via the standard interfaces like GUI & control panel [2]. These progress codes are used during boot hangs e.t.c to provide additional detail as to how far we made it with respect to boot. >>>> >>>> Does the community has shared interests on this & would like to collaborate ? >>> >>> I am interested in this problem as well and would like to collaborate. >> I am interested as well. >> >>> OpenBMC already seems to have solutions for POST codes - >>> phosphor-host-postd, phosphor-post-code-manager and there's a >>> Boot.Raw.Value D-Bus API. However it would be nice to have a more >>> generic solution. I think it's hard to converge on the format of such >>> codes (since they can originate from different layers of firmware >>> stacks/bootloaders and some of these layers might not accommodate >>> PLDM/IPMI etc). >> In this process, We may have to extend >> https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.dmtf.org%2Fsites%2Fdefault%2Ffiles%2Fstandards%2Fdocuments%2FDSP0249_1.0.0.pdf&data=04%7C01%7Csupreeth.venkatesh%40amd.com%7C318ef94d2e2449628c8f08d8c3b72a7e%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637474539330069219%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=rmQNUK8TbASF2%2Fy6N%2BLjjh2tCN8CHKEumXIedUYaRmQ%3D&reserved=0 >> which has a 16 bit state sensor for Boot Progress. As well, We may have to make sure that it gets mapped to >> Redfish. >> >> What I mean by generic above is: >>> - A generic D-Bus API for progress codes >>> - A generic app for managing the policies around such codes >>> - Platform specific "Producers" of progress codes, conforming to the >>> generic D-Bus API >>> - Redfish mechanisms (LogService/other) to extract codes > > Yes, this would definitely be useful. I believe we've had discussions > in the past but were unable to come up with a satisfactory interface > that supports all of the different types of progress codes. > >> >> +1 >> >>> >>> Maybe some of the apps I pointed above can be extended for this >>> purpose, but I'm yet to take a closer look. >> One of the deviations on AMD platforms is that POST code is usually 32 bit code. >> I did extend phosphor-host-postd to read 32 bit codes and added experimental associated driver in Linux, as LPC ports supported is only two. >> However, it is far from production quality code at this point. We can definitely collaborate on this to arrive at a generic solution. >> > > phosphor-host-postd supports the "-b" option to specify POST code > length in bytes, with up to 8 supported. Yup. It does. > > The Nuvoton BPC driver has support for 32 bit POST codes as well, so > you may find it helpful to refer to that when working on the Aspeed > driver. Thanks Benjamin. I will refer Nuvoton BPC driver. > >>> >>> Thanks, >>> Deepak >>>