From nobody Sat Nov 15 07:42:51 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1754991768; cv=none; d=zohomail.com; s=zohoarc; b=AVe6WL0xGI6pxYdrWWnMVvaZu67d2NrKdbCtq/njn7K02MryyYog6Usb12ssRRBxUfPssIHeqhZfPFNUHYhWdiFYRO10zn9tjvtFRkkxob1wr53A3HFWIVWkBOgoKrEoiyhn0/82F1bbrepIroXg3a11AO8YvbWEiISmsT5CunY= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1754991768; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Reply-To:Reply-To:References:Sender:Subject:Subject:To:To:Message-Id; bh=uIrmozXqecdOG8cJZ2SnO/XVkmn0+rfjEVK0PJyjtLY=; b=MY+riPYBI+4R9VRB5VsL1eYjwhJhV4R64Ca4MzsSKQTKJWljW8Cr8Qhe+j+KWStyJ5KcZPhYFnKnjp+iByPJDDoEMnFTMYq4aToXupQj7yAwYldpRWbmwHzUNSQCyKR//FuyadR4UfkiihZVf468qr1vdDHk29Y6IbMrGOWBi1E= ARC-Authentication-Results: i=1; mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1754991768186190.880065605984; Tue, 12 Aug 2025 02:42:48 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ullVf-00084f-DZ; Tue, 12 Aug 2025 05:41:35 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ullVd-00082g-UK; Tue, 12 Aug 2025 05:41:33 -0400 Received: from mail.aspeedtech.com ([211.20.114.72] helo=TWMBX01.aspeed.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ullVa-0000lv-UW; Tue, 12 Aug 2025 05:41:33 -0400 Received: from TWMBX01.aspeed.com (192.168.0.62) by TWMBX01.aspeed.com (192.168.0.62) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1748.10; Tue, 12 Aug 2025 17:40:16 +0800 Received: from mail.aspeedtech.com (192.168.10.10) by TWMBX01.aspeed.com (192.168.0.62) with Microsoft SMTP Server id 15.2.1748.10 via Frontend Transport; Tue, 12 Aug 2025 17:40:16 +0800 To: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , Peter Maydell , Steven Lee , Troy Lee , Jamin Lin , Andrew Jeffery , Joel Stanley , "open list:ASPEED BMCs" , "open list:All patches CC here" CC: , Kane-Chen-AS Subject: [PATCH v5 10/10] docs/system/arm/aspeed: Document OTP memory options Date: Tue, 12 Aug 2025 17:40:07 +0800 Message-ID: <20250812094011.2617526-11-kane_chen@aspeedtech.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250812094011.2617526-1-kane_chen@aspeedtech.com> References: <20250812094011.2617526-1-kane_chen@aspeedtech.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=211.20.114.72; envelope-from=kane_chen@aspeedtech.com; helo=TWMBX01.aspeed.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_FAIL=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-to: Kane Chen From: Kane Chen via Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1754991769993124100 Content-Type: text/plain; charset="utf-8" From: Kane-Chen-AS Add documentation for the OTP memory module used by AST2600 and AST1030 SoCs, and describe options for using a pre-generated image or an internal buffer. Include example commands for configuration and image generation. Signed-off-by: Kane-Chen-AS Reviewed-by: C=C3=A9dric Le Goater --- docs/system/arm/aspeed.rst | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/docs/system/arm/aspeed.rst b/docs/system/arm/aspeed.rst index bf18c56347..6317c0e910 100644 --- a/docs/system/arm/aspeed.rst +++ b/docs/system/arm/aspeed.rst @@ -243,6 +243,37 @@ under Linux), use : =20 -M ast2500-evb,bmc-console=3Duart3 =20 +OTP Option +^^^^^^^^^^ + +Both the AST2600 and AST1030 chips use the same One Time Programmable +(OTP) memory module, which is utilized for configuration, key storage, +and storing user-programmable data. This OTP memory module is managed +by the Secure Boot Controller (SBC). The following options can be +specified or omitted based on your needs. + + * When the options are specified, the pre-generated configuration + file will be used as the OTP memory storage. + + * When the options are omitted, an internal memory buffer will be + used to store the OTP memory data. + +.. code-block:: bash + + -blockdev driver=3Dfile,filename=3Dotpmem.img,node-name=3Dotp \ + -global aspeed-otp.drive=3Dotp \ + +The following bash command can be used to generate a default +configuration file for OTP memory: + +.. code-block:: bash + + if [ ! -f otpmem.img ]; then + for i in $(seq 1 2048); do + printf '\x00\x00\x00\x00\xff\xff\xff\xff' + done > otpmem.img + fi + Aspeed 2700 family boards (``ast2700-evb``) =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =20 --=20 2.43.0