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Peter Anvin" References: <20201113235242.k6fzlwmwm2xqhqsi@tomti.i.net-space.pl> <5FB223E8020000A10003CB88@gwsmtp.uni-regensburg.de> From: Rasmus Villemoes Message-ID: <2d920ff2-68cb-69f5-f2d9-47131ec1b512@prevas.dk> Date: Mon, 16 Nov 2020 09:57:25 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 In-Reply-To: <5FB223E8020000A10003CB88@gwsmtp.uni-regensburg.de> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit X-Originating-IP: [5.186.115.188] X-ClientProxiedBy: AM5PR0701CA0070.eurprd07.prod.outlook.com (2603:10a6:203:2::32) To AM0PR10MB1874.EURPRD10.PROD.OUTLOOK.COM (2603:10a6:208:3f::10) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from [192.168.1.149] (5.186.115.188) by AM5PR0701CA0070.eurprd07.prod.outlook.com (2603:10a6:203:2::32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3589.15 via Frontend Transport; Mon, 16 Nov 2020 08:57:26 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 51df6655-3ee2-480b-88ea-08d88a0da4d0 X-MS-TrafficTypeDiagnostic: AM9PR10MB4404: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:8882; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: Hu4BhxR9oCJwEru+vqpQVtzm7o52z+tCM7zAnzWlKgMRJFFOuAulwMYUzKqtQZ7AR2LZzxCts8yBLwW8yfOx+5B1ccyxoUGLEXm+bMdDnmN4X1IlGYMJN/Ouaiq3VxhkpRtevgP2C89qdsmrS2FgTnLH+rkrEZXtKbJvygGtT+ym0+S/kcrcn4BqTHndyCupJVZQu9YASYurpBG5w6efTob2tN3ZMrDmcIhJoC7DFgGSV6T00LTmmURpdXC2xrZb73QQdAsSwN+9ExVq8/9Cd2bZu3DSCAQPZ+qV0O/XeTbYZZdcvWIDMk12Z6eDQvhAiemCGz1LvintrJ9mm5NkJG4kU5qnGi57j+vGUYMjFtYrzTMAdAQFfjELo1AoP0qSEl8euhF7FfXQjSbeT20/Xg== X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:AM0PR10MB1874.EURPRD10.PROD.OUTLOOK.COM;PTR:;CAT:NONE;SFS:(376002)(346002)(396003)(366004)(136003)(39840400004)(110136005)(6486002)(478600001)(5660300002)(2906002)(16576012)(8676002)(316002)(31696002)(86362001)(44832011)(66946007)(66476007)(66556008)(36756003)(2616005)(956004)(7416002)(83380400001)(7406005)(4326008)(31686004)(8936002)(921005)(16526019)(8976002)(186003)(52116002)(26005)(4744005)(43740500002);DIR:OUT;SFP:1102; X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: prevas.dk X-MS-Exchange-CrossTenant-Network-Message-Id: 51df6655-3ee2-480b-88ea-08d88a0da4d0 X-MS-Exchange-CrossTenant-AuthSource: AM0PR10MB1874.EURPRD10.PROD.OUTLOOK.COM X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Nov 2020 08:57:28.0211 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: d350cf71-778d-4780-88f5-071a4cb1ed61 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: PmGFQ99hS0Z5oBfPElVCfR+/nsMklXhz+Y0C2IZYwtZegDmUt78DCbFctVhWLG8zVFJBKvQc4iAq3GwhYZySGDo4PFskOBKd6Osed0Yhfbo= X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM9PR10MB4404 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 16/11/2020 08.02, Ulrich Windl wrote: >>>> Daniel Kiper schrieb am 14.11.2020 um 00:52 in > Nachricht <20201113235242.k6fzlwmwm2xqhqsi@tomti.i.net-space.pl>: > ... >> The members of struct bf_log_msg: >> ‑ size: total size of bf_log_msg struct, >> ‑ ts_nsec: timestamp expressed in nanoseconds starting from 0, > > Who or what defines t == 0? Some sort of "clapperboard" log entry, stating "the RTC says X, the cycle counter is Y, the onboard ACME atomic clock says Z, I'm now starting to count ts_nsec from W" might be useful for some eventual userspace tool to try to stitch together the log entries from the various stages. I have no idea how a formal spec of such an entry would look like or if it's even feasible to do formally. But even just such entries in free-form prose could at least help a human consumer. Rasmus From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rasmus Villemoes Date: Mon, 16 Nov 2020 09:57:25 +0100 Subject: Antw: [EXT] [systemd-devel] [SPECIFICATION RFC] The firmware and bootloader log specification In-Reply-To: <5FB223E8020000A10003CB88@gwsmtp.uni-regensburg.de> References: <20201113235242.k6fzlwmwm2xqhqsi@tomti.i.net-space.pl> <5FB223E8020000A10003CB88@gwsmtp.uni-regensburg.de> Message-ID: <2d920ff2-68cb-69f5-f2d9-47131ec1b512@prevas.dk> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On 16/11/2020 08.02, Ulrich Windl wrote: >>>> Daniel Kiper schrieb am 14.11.2020 um 00:52 in > Nachricht <20201113235242.k6fzlwmwm2xqhqsi@tomti.i.net-space.pl>: > ... >> The members of struct bf_log_msg: >> ? size: total size of bf_log_msg struct, >> ? ts_nsec: timestamp expressed in nanoseconds starting from 0, > > Who or what defines t == 0? Some sort of "clapperboard" log entry, stating "the RTC says X, the cycle counter is Y, the onboard ACME atomic clock says Z, I'm now starting to count ts_nsec from W" might be useful for some eventual userspace tool to try to stitch together the log entries from the various stages. I have no idea how a formal spec of such an entry would look like or if it's even feasible to do formally. But even just such entries in free-form prose could at least help a human consumer. 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Mon, 16 Nov 2020 08:57:28 +0000 Subject: Re: Antw: [EXT] [systemd-devel] [SPECIFICATION RFC] The firmware and bootloader log specification To: Ulrich Windl , coreboot@coreboot.org, grub-devel@gnu.org, trenchboot-devel@googlegroups.com, x86@kernel.org, u-boot@lists.denx.de, "systemd-devel@lists.freedesktop.org" , xen-devel@lists.xenproject.org, daniel.kiper@oracle.com, linux-kernel@vger.kernel.org Cc: krystian.hebel@3mdeb.com, michal.zygowski@3mdeb.com, piotr.krol@3mdeb.com, mtottenh@akamai.com, luto@amacapital.net, dpsmith@apertussolutions.com, andrew.cooper3@citrix.com, roger.pau@citrix.com, allen.cryptic@gmail.com, btrotter@gmail.com, phcoder@gmail.com, lukasz.hawrylko@intel.com, ard.biesheuvel@linaro.org, tyhicks@linux.microsoft.com, pmenzel@molgen.mpg.de, hun@n-dimensional.de, leif@nuviainc.com, alexander.burmashev@oracle.com, eric.devolder@oracle.com, eric.snowberg@oracle.com, joao.m.martins@oracle.com, kanth.ghatraju@oracle.com, konrad.wilk@oracle.com, ross.philipson@oracle.com, javierm@redhat.com, pjones@redhat.com, alecb@umass.edu, "H. Peter Anvin" References: <20201113235242.k6fzlwmwm2xqhqsi@tomti.i.net-space.pl> <5FB223E8020000A10003CB88@gwsmtp.uni-regensburg.de> From: Rasmus Villemoes Message-ID: <2d920ff2-68cb-69f5-f2d9-47131ec1b512@prevas.dk> Date: Mon, 16 Nov 2020 09:57:25 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 In-Reply-To: <5FB223E8020000A10003CB88@gwsmtp.uni-regensburg.de> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit X-Originating-IP: [5.186.115.188] X-ClientProxiedBy: AM5PR0701CA0070.eurprd07.prod.outlook.com (2603:10a6:203:2::32) To AM0PR10MB1874.EURPRD10.PROD.OUTLOOK.COM (2603:10a6:208:3f::10) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from [192.168.1.149] (5.186.115.188) by AM5PR0701CA0070.eurprd07.prod.outlook.com (2603:10a6:203:2::32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3589.15 via Frontend Transport; Mon, 16 Nov 2020 08:57:26 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 51df6655-3ee2-480b-88ea-08d88a0da4d0 X-MS-TrafficTypeDiagnostic: AM9PR10MB4404: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:8882; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: Hu4BhxR9oCJwEru+vqpQVtzm7o52z+tCM7zAnzWlKgMRJFFOuAulwMYUzKqtQZ7AR2LZzxCts8yBLwW8yfOx+5B1ccyxoUGLEXm+bMdDnmN4X1IlGYMJN/Ouaiq3VxhkpRtevgP2C89qdsmrS2FgTnLH+rkrEZXtKbJvygGtT+ym0+S/kcrcn4BqTHndyCupJVZQu9YASYurpBG5w6efTob2tN3ZMrDmcIhJoC7DFgGSV6T00LTmmURpdXC2xrZb73QQdAsSwN+9ExVq8/9Cd2bZu3DSCAQPZ+qV0O/XeTbYZZdcvWIDMk12Z6eDQvhAiemCGz1LvintrJ9mm5NkJG4kU5qnGi57j+vGUYMjFtYrzTMAdAQFfjELo1AoP0qSEl8euhF7FfXQjSbeT20/Xg== X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:AM0PR10MB1874.EURPRD10.PROD.OUTLOOK.COM;PTR:;CAT:NONE;SFS:(376002)(346002)(396003)(366004)(136003)(39840400004)(110136005)(6486002)(478600001)(5660300002)(2906002)(16576012)(8676002)(316002)(31696002)(86362001)(44832011)(66946007)(66476007)(66556008)(36756003)(2616005)(956004)(7416002)(83380400001)(7406005)(4326008)(31686004)(8936002)(921005)(16526019)(8976002)(186003)(52116002)(26005)(4744005)(43740500002);DIR:OUT;SFP:1102; X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: prevas.dk X-MS-Exchange-CrossTenant-Network-Message-Id: 51df6655-3ee2-480b-88ea-08d88a0da4d0 X-MS-Exchange-CrossTenant-AuthSource: AM0PR10MB1874.EURPRD10.PROD.OUTLOOK.COM X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Nov 2020 08:57:28.0211 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: d350cf71-778d-4780-88f5-071a4cb1ed61 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: PmGFQ99hS0Z5oBfPElVCfR+/nsMklXhz+Y0C2IZYwtZegDmUt78DCbFctVhWLG8zVFJBKvQc4iAq3GwhYZySGDo4PFskOBKd6Osed0Yhfbo= X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM9PR10MB4404 On 16/11/2020 08.02, Ulrich Windl wrote: >>>> Daniel Kiper schrieb am 14.11.2020 um 00:52 in > Nachricht <20201113235242.k6fzlwmwm2xqhqsi@tomti.i.net-space.pl>: > ... >> The members of struct bf_log_msg: >> ‑ size: total size of bf_log_msg struct, >> ‑ ts_nsec: timestamp expressed in nanoseconds starting from 0, > > Who or what defines t == 0? Some sort of "clapperboard" log entry, stating "the RTC says X, the cycle counter is Y, the onboard ACME atomic clock says Z, I'm now starting to count ts_nsec from W" might be useful for some eventual userspace tool to try to stitch together the log entries from the various stages. I have no idea how a formal spec of such an entry would look like or if it's even feasible to do formally. But even just such entries in free-form prose could at least help a human consumer. Rasmus