From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dispatch1-us1.ppe-hosted.com (dispatch1-us1.ppe-hosted.com [67.231.154.164]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id E1DC22195FD40 for ; Thu, 18 May 2017 08:00:50 -0700 (PDT) Received: from pure.maildistiller.com (unknown [10.110.50.29]) by dispatch1-us1.ppe-hosted.com (Proofpoint Essentials ESMTP Server) with ESMTP id D5E1D600CD for ; Thu, 18 May 2017 15:00:49 +0000 (UTC) X-Virus-Scanned: Proofpoint Essentials engine Received: from mx4-us4.ppe-hosted.com (unknown [10.110.49.251]) by pure.maildistiller.com (Proofpoint Essentials ESMTP Server) with ESMTPS id 24C7360054 for ; Thu, 18 May 2017 15:00:49 +0000 (UTC) Received: from webmail.solarflare.com (uk.solarflare.com [193.34.186.16]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mx4-us4.ppe-hosted.com (Proofpoint Essentials ESMTP Server) with ESMTPS id 0BDE160064 for ; Thu, 18 May 2017 15:00:48 +0000 (UTC) Received: from tp-desktop.uk.solarflarecom.com (10.17.20.51) by ukex01.SolarFlarecom.com (10.17.10.4) with Microsoft SMTP Server (TLS) id 15.0.1044.25; Thu, 18 May 2017 16:00:39 +0100 To: "edk2-devel@lists.01.org" From: "Tomas Pilar (tpilar)" Message-ID: <1548dc48-890d-29e0-0bdc-5df3ce545e5b@solarflare.com> Date: Thu, 18 May 2017 16:00:36 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.1.0 MIME-Version: 1.0 X-Originating-IP: [10.17.20.51] X-ClientProxiedBy: ocex03.SolarFlarecom.com (10.20.40.36) To ukex01.SolarFlarecom.com (10.17.10.4) X-TM-AS-Product-Ver: SMEX-11.0.0.1191-8.100.1062-23076.003 X-TM-AS-Result: No--5.594500-0.000000-31 X-TM-AS-User-Approved-Sender: Yes X-TM-AS-User-Blocked-Sender: No X-MDID: 1495119649-IGvRQAEPmv0a Subject: SMBios configuration table not present until late stage of boot X-BeenThere: edk2-devel@lists.01.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: EDK II Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 18 May 2017 15:00:51 -0000 Content-Type: text/plain; charset="utf-8"; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US Hi, I am trying to read the system UUID from the System Table (Type 1) in the SMBios set of tables. I am doing this during DriverBinding.Start() part of the UEFI_DRIVER initialisation. Unfortunately the gST->ConfigurationTable only contains 6 tables and SMBios is not one of them. Once I boot into UEFI shell or start a PXE booting process, the gST->ConfigurationTable now contains 8 tables and SMBios is one of the two new tables. If I however only boot to a HDD, this never seems to happen. Can someone offer some insight why this might be so and how would I go about forcing the platform to provide the SMBios in gST->ConfigurationTable at a sensible point? Incidentally it seems ExitBootServices is not signaled on this platform if the boot goes through to HDD either, which is another strange thing ... Cheers, Tom