From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from smtp4.osuosl.org (smtp4.osuosl.org [140.211.166.137]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0972BC5DF81 for ; Sun, 23 Aug 2026 14:32:02 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp4.osuosl.org (Postfix) with ESMTP id 65A9340689; Sun, 23 Aug 2026 14:32:02 +0000 (UTC) X-Virus-Scanned: amavis at osuosl.org Received: from smtp4.osuosl.org ([127.0.0.1]) by localhost (smtp4.osuosl.org [127.0.0.1]) (amavis, port 10024) with ESMTP id 0w7CQMr_MxPc; Sun, 23 Aug 2026 14:32:01 +0000 (UTC) X-Comment: SPF check N/A for local connections - client-ip=140.211.166.142; helo=lists1.osuosl.org; envelope-from=u-boot-bounces@lists.u-boot-project.org; receiver= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=lists.u-boot-project.org; s=default; t=1787495521; bh=rl9fmNgw0lQIIrdx4JdFUSj4rmpk+Rp9bdwjPd2f4NA=; h=Date:From:Subject:To:Cc:References:In-Reply-To:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=aWp1TdESdzfZdNHxcQF+DcJN1vgITgxtuyi3y5ATajGb/5YOdqXnT7BDIRWtVKynX pQC/XGIVWZZRdlhQzkjK3DDQHmuqsUAN4079Hwe+yM3glliNwsuCkuEiWbFNpMv8oE 3j0pstVC5USJnQm7yXCC6FnajAXn4Fz2+OipQY7O42OEYlvBAdJ/X2xtewRF26OjQ4 eWDULHSz5SAYFNNReE3Ei9uYQ562Scqbj8PA3j3pY6rTjaX42/GyDJ9HV0rOTPWqVI Fs+2gFEQMI/svvVvSctte0Shk11eXq5CW7CG013wMs+bXBKSjtkAe8RrUDCMh7rFM+ q5V5OMvVRWg+g== Received: from lists1.osuosl.org (lists1.osuosl.org [140.211.166.142]) by smtp4.osuosl.org (Postfix) with ESMTP id 7372F4067A; Sun, 23 Aug 2026 14:32:01 +0000 (UTC) Received: from smtp4.osuosl.org (smtp4.osuosl.org [IPv6:2605:bc80:3010::137]) by lists1.osuosl.org (Postfix) with ESMTP id 473C4386 for ; Sun, 23 Aug 2026 14:32:00 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp4.osuosl.org (Postfix) with ESMTP id 2D1464067A for ; Sun, 23 Aug 2026 14:32:00 +0000 (UTC) X-Virus-Scanned: amavis at osuosl.org Received: from smtp4.osuosl.org ([127.0.0.1]) by localhost (smtp4.osuosl.org [127.0.0.1]) (amavis, port 10024) with ESMTP id iAZaq8xGerVA for ; Sun, 23 Aug 2026 14:31:59 +0000 (UTC) Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=2a01:111:f403:c100::f; helo=bl2pr02cu003.outbound.protection.outlook.com; envelope-from=tanmay.kathpalia@altera.com; receiver= Authentication-Results: smtp4.osuosl.org; dmarc=pass (p=reject dis=none) header.from=altera.com Authentication-Results: smtp4.osuosl.org; dkim=pass (2048-bit key, unprotected) header.d=altera.com header.i=@altera.com header.a=rsa-sha256 header.s=selector2 header.b=sSpPkiL8 Received: from BL2PR02CU003.outbound.protection.outlook.com (mail-eastusazlp17011000f.outbound.protection.outlook.com [IPv6:2a01:111:f403:c100::f]) by smtp4.osuosl.org (Postfix) with ESMTPS id 4643E40675 for ; Sun, 23 Aug 2026 14:31:58 +0000 (UTC) ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=I8DZE7L92gv7lQzQsQKB+eSWQebVdY3/UTBE+sPwJC5GjfZxJPGlQ0LDNgPq7oLgyGUYiG/LoS0Xb4RtMMCYqF6KW7zkQVmwruHz+oSzTuyDu3fAwxBDNQPZ0MthNeqoVfL5/8Xp9PeuAGR77c0TMeVNrjEqV9e2XaBYX0qyM3e7h51vnvc3c5b08xDIaIKFgsgwlxgkyG1bUCrmrbA5KksA8BBnjtV4q4kOiIKi+eaBDYiJoDXTJRr0SbINc2IMpyVSEPJnSUQUHsTR2WR9CAylDIZopGILFVdT913KhL/75eAWwqTQvS23fIebwRlU/ANZqiUBotuYe2VMiEJ/eA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=rl9fmNgw0lQIIrdx4JdFUSj4rmpk+Rp9bdwjPd2f4NA=; b=XgLyL0CKywVR+1m+f5xAUUUVOmvVsYp9OI2igOZL3T31wlv2VMZufJgUNdMYb61UvNdid45feyZlCKlxMoq8zkrQShhKLjkrAI4zWKx2wk4rpTbO9CsaVuw49DPyLZEWkFjyJKJwWIClRcfefok5CQ/ln8UtO3x0obH3RIDkKYBuRVf8u642Sg8hJWGBCHc426PJGNLL2uK2Ho9ZwqENWFt/LRYfxeWxUgLxSStENOmRaPMEHG8KnxyJVbnUD5trT/RFDA71huWuGD1OdiUbuF6BkKZyYCo3QCcZ0/STapQCIx/lt598pNJPx4whWtxV05yMekBKMewbdxmHUyBXbw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=altera.com; dmarc=pass action=none header.from=altera.com; dkim=pass header.d=altera.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=altera.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=rl9fmNgw0lQIIrdx4JdFUSj4rmpk+Rp9bdwjPd2f4NA=; b=sSpPkiL8LBiuYy73sreWQZdO2qMsZSTHmHtEJN2Ymew1yoJ/CIa+r3zoJgUyfYaNP3Fc16QXGD7exx0JYSWfzqUNgS58/9S9mU49j3NtvunSmjfxR7ctwdBACmi2rGHB6vwL6TSBsBJ4LrvjlEP09Jd2CeSyHBZPW64UovrwxvbLj1AwSILguygJfY2hQhDz56PQTr9yGicb/Cj0HQLKY7+zFYT8ZgJeQNSXkvs07DQunNseisRKYpEPIyG4PXKaKWOLWnZ2X4sl1T2qfHApyD3QDwlwa28wy3TBqMFC7525Y25NElLdjAg8mhwNpGee3UEec/RO/1YKD4Tw8I2kUA== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=altera.com; Received: from DM4PR03MB6208.namprd03.prod.outlook.com (2603:10b6:5:39c::19) by MN6PR03MB7670.namprd03.prod.outlook.com (2603:10b6:208:4f6::12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.339.12; Sun, 23 Aug 2026 14:31:52 +0000 Received: from DM4PR03MB6208.namprd03.prod.outlook.com ([fe80::2216:93ef:67b:9e04]) by DM4PR03MB6208.namprd03.prod.outlook.com ([fe80::2216:93ef:67b:9e04%3]) with mapi id 15.21.0339.012; Sun, 23 Aug 2026 14:31:52 +0000 Message-ID: <495e9da4-cbcd-40ad-87aa-b8a156dc9022@altera.com> Date: Sun, 23 Aug 2026 20:01:42 +0530 User-Agent: Mozilla Thunderbird From: "Kathpalia, Tanmay" Subject: Re: [PATCH 1/4] tee: optee: Add support for enumerating services that only need RPMB To: Jan Kiszka , U-Boot Mailing List Cc: Jens Wiklander , Ilias Apalodimas , Sai Sree Kartheek Adivi , Alexander Heinisch References: Content-Language: en-US In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: MA5P287CA0038.INDP287.PROD.OUTLOOK.COM (2603:1096:a01:175::7) To DM4PR03MB6208.namprd03.prod.outlook.com (2603:10b6:5:39c::19) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM4PR03MB6208:EE_|MN6PR03MB7670:EE_ X-MS-Office365-Filtering-Correlation-Id: 954495ae-205f-4df2-be22-08df01234586 X-MS-Exchange-AtpMessageProperties: SA X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|376014|1800799024|23010399003|366016|6133799003|3023799007|10067099003|56012099006|5023799004|11063799006|4143699003|22082099003|18002099003|55112099003; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:DM4PR03MB6208.namprd03.prod.outlook.com; PTR:; CAT:NONE; SFS:(13230040)(376014)(1800799024)(23010399003)(366016)(6133799003)(3023799007)(10067099003)(56012099006)(5023799004)(11063799006)(4143699003)(22082099003)(18002099003)(55112099003); DIR:OUT; SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?akx0eUE0RFB0Y0kxQmsvS29mbFJSQ29BZS8xdWl6ZkNOTjU0QVIwRjFvUmV5?= =?utf-8?B?aTNZSVdnNlFYeit3Vjh2N1NtaDR5REZkSXVyalg0Z011SlF6SmpyRGpMRm1x?= =?utf-8?B?Z3ZtdlBxOFVmamxxNkREZmRJU0Qxb2ZZbUhlcEJndUMzMXl0OGRxUTNhWXRo?= =?utf-8?B?Nk5WeUxZTFdtNXVCTnV1QzVwSlJFaXRQbk14UFI4eG9QeTJwWDhNUWZWN0U1?= =?utf-8?B?RnFyYVBUK0ZEOWpuWVYyRnRvcDBFbHJqSWY3M01Ca05palRKdjhPdDlHeW9V?= =?utf-8?B?OTdBTUZwM3Vqd1Avb3pRazJqZ09mQ2kvd1FxNUovSXhwd2kxNVZ2cm00dVBB?= =?utf-8?B?SkgzMyt2d0Z4emRDSktReFN1dGovMThTTTVvMGhBVzkvUFoyOUMvRitLZW44?= =?utf-8?B?aHpIUkoxdERiWjVWa0QvRGdQQm1ZRy9rZG80UWpneTVYUlFvRit3TzdHSDJj?= =?utf-8?B?UHBJK3pFeXhNaW9HMFFsYzBhZGlVQnJUNlo5a3NhcEl0M0lPWklxUzVEYTN2?= =?utf-8?B?ZTJscXIwL2c1aUZNTHF2MDdkeFhXb2EwbWFJdVQxTEFQakFjdHZKelc0RTU0?= =?utf-8?B?TEI3WVA0Z2NHbnFGc0ptQUZ5blV3S2tRc0xXS0FFNVp1bUxrdDE5THJzVVA0?= =?utf-8?B?Z0hDS1dIWXFVeWZzdVNvMGczMFZENHdnOU9JMFZwTUtxbWNEb3NTYWMrQm5S?= =?utf-8?B?NGpZaDFjWTNnY3djb2VQYS9lcTg5RCtvZ1YrY0d4NVZwbm9xTUhwZUxHM1Jl?= =?utf-8?B?c21BaDU0b2hCTXdFYTlJVDVpYktacFlnTUhPQlV1Y0ZENGhsYUZFLzdiWUsx?= =?utf-8?B?dnkxaE9PSzlnVFpXWWlZWEx6aXA0bDdrc29vUWxiQ3hBMDNOS00wYXdiSDRL?= =?utf-8?B?RFAvNFNRZWFiMy9wUmh5NlZGeXpqTWIxd1F2WXJUSFpiOE1rL0wrWmp1STRO?= =?utf-8?B?UkQ5dVhhUXdNY0NzWkErODIwczVVRmN3Q3kvc0VyZFRnUkEwRXZyTWZiYk41?= =?utf-8?B?VFRnTG1adTBEM2RMUFdiN2ZIdG5ZdmpRR1o3SjRPbCthODQxS0ZqTTJUTDVt?= =?utf-8?B?TDFGYm00NFZSUDFPUDJyMTJlY3BpUjlMeFYwWE5MWlFMY3k5UHY3cW9LUmtX?= =?utf-8?B?Y0I2REIwOUw1QjM1bGhDRWxWVmZPNjNIZlVjbEk5dHIvVjR2ZHF3TGxLMjBh?= =?utf-8?B?UTlZSWo0MnlhOVNnRWIrOUlXbHhRYmxVN01EaWpRTlVNUjI2S3N6OTYxUTNi?= =?utf-8?B?dHVqYzNJZmpadWZ0dGU2UDROQldBazJCdGNIdXRMa3JkSGsremdBSjVtbVZs?= =?utf-8?B?cHMybWdyTTlOQTRWVzlOY1ZNSU1YaWpkdmVJc1RFaWdCWXFYSkd0SmNWWHZQ?= =?utf-8?B?bDdzZGJFMDhPTEV4NHREcHVVQ1NpQStGRkNwYmo4b0RhZkN3UjJ4SHZRVm9x?= =?utf-8?B?a3J0dzJSbXl1azNzOWlNK25ubXZtQ1hRMXBxbmV1ZWZGMGd4M3J4UksrUjA1?= =?utf-8?B?QUFwZzdoUnpDZWF1UldpSFBsQlZUUGhISjhtY0xSNWxXci9BK3QzWUNheU55?= =?utf-8?B?YWIzdGJnK0VMTCtlOTVSQkFRYS9sNjEreEs4elFBTSsvLzRnUUlWdmQ0a29U?= =?utf-8?B?SGRVMzZReXFqSGI3RHU4b2dRTnRqTUZhcUd3czJ6TU9lNTVESGhZandHNGlS?= =?utf-8?B?dkMyaUI0b25ReWt4aVJubzVvOXE0K0xlU1hmelU2UTJGdlUzS1RYUmJkaXNl?= =?utf-8?B?eDM2WHNVeTcwOVNMYXBid1hCajl0VFBjdjBKOXNYQzIvczloQVlmZ29pTzc2?= =?utf-8?B?WlRGTFZzSmQ2cU5UQnNSQTEvbGZBZ1owNm1aaEEvcW9xMUZaQ3E0MXpJYk1N?= =?utf-8?B?M0NxK1JoOXZOaVc0NFlCZk16QXBVczR4blhnZHg4cmgxNjBJRElZdUZPS3I1?= =?utf-8?B?Qi90bjdXRXh4NWYzNVJvWnltVGNZMEh3ZG1Ec3BXQ05ENmZ0Q2NkS2xPM2Q4?= =?utf-8?B?aXZSRlVJL3RJdDltRGQvSHZybHlwY0MxazZ5djNkS0ZRZGgwU0VUZlByekIr?= =?utf-8?B?M0ZvZGFYY2xBUzFhK1AzbGdobjkzMUhtQk9hMHRKekZLRUpIbGFkSHYvdzdL?= =?utf-8?B?WGJyVTltSFhnL0dNbzhoWGhXc1FXNU9jb3grLzN6TjVQbE14b080ajNBcTAw?= =?utf-8?B?ZHIvR0RxZG9LT29ORFZWdElzc2ZwTVNqeENyOEppaUxrZ250YkR6aUFZSndV?= =?utf-8?B?ZWh4cWhmTldYL1UvcHJoeTdVbXRlOVlpc1dya1VGdEVuR1NSSVU5Yi9RUGJq?= =?utf-8?B?aTIxSjdnY1ZZd0sxbnhWV3prR3VKNmMxSjZWeldFbDlQdW00d1ZIbDg5cHRy?= =?utf-8?Q?OINpffaqGUciKJ/U=3D?= X-OriginatorOrg: altera.com X-MS-Exchange-CrossTenant-Network-Message-Id: 954495ae-205f-4df2-be22-08df01234586 X-MS-Exchange-CrossTenant-AuthSource: DM4PR03MB6208.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 Aug 2026 14:31:52.6480 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: fbd72e03-d4a5-4110-adce-614d51f2077a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: +hy6Z7tmNu1af0v+DgGdwPWzMm8NPZaAl7oX6s5P6kbQq1v7O4raYi2eaE46lJ8W/EvEZjiMDSGcI4Q54JqAp06xFI4yCuXa41F93pdUQl8= X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN6PR03MB7670 X-BeenThere: u-boot@lists.u-boot-project.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.u-boot-project.org Hi Jan, I am not an expert in TEE, but I went through this patch while reviewing the MMC side of the series and found a few issues. On 21-08-2026 14:58, Jan Kiszka wrote: > From: Jan Kiszka > > Up to OP-TEE 4.4.0, all services that needed a supplicant where returned > by PTA_CMD_GET_DEVICES_SUPP. Since then, services that only need a > supplicant for the purpose of accessing the RPMB are only enumerated by > the new, separate PTA_CMD_GET_DEVICES_RPMB. U-Boot so far lacks support > for that, thus no longer finds such services, e.g. fTPM. > > Perform the separate enumeration during probe but, as that may fail if > the MMC is not probed yet, also provide a callback to trigger a retry > when another MMC device becomes available. > > Signed-off-by: Jan Kiszka > --- > drivers/tee/optee/core.c | 32 +++++++++++++++++++++++++++++++ > drivers/tee/optee/optee_private.h | 2 ++ > drivers/tee/optee/rpmb.c | 11 +++++++++++ > include/tee/optee.h | 2 ++ > 4 files changed, 47 insertions(+) > > diff --git a/drivers/tee/optee/core.c b/drivers/tee/optee/core.c > index 4d67c948ec1..5600d5a4c7d 100644 > --- a/drivers/tee/optee/core.c > +++ b/drivers/tee/optee/core.c > @@ -41,6 +41,13 @@ > */ > #define PTA_CMD_GET_DEVICES_SUPP 0x1 > > +/* > + * PTA_CMD_GET_DEVICES_RPMB - List services only depending on RPMB support > + * > + * [out] memref[0]: List of the UUIDs of service enumerated by OP-TEE > + */ > +#define PTA_CMD_GET_DEVICES_RPMB 0x2 > + > typedef void (optee_invoke_fn)(unsigned long, unsigned long, unsigned long, > unsigned long, unsigned long, unsigned long, > unsigned long, unsigned long, > @@ -210,6 +217,29 @@ static int bind_service_drivers(struct udevice *dev) > return ret2; > } > > +#ifdef CONFIG_SUPPORT_EMMC_RPMB > +void optee_bind_service_drivers_rpmb(struct udevice *dev) This function is only compiled when SUPPORT_EMMC_RPMB is set, but optee_probe() calls it unconditionally after a successful bind_service_drivers(). optee_private.h stubs other functions for the !RPMB case, this new prototype has no such stub, so for SUPPORT_EMMC_RPMB=n should fail to link. > +{ > + struct tee_shm *service_list = NULL; > + size_t service_count; > + u32 tee_sess; > + int ret; > + > + ret = open_enum_session(dev, &tee_sess); > + if (ret) > + return; > + > + ret = enum_services(dev, &service_list, &service_count, tee_sess, > + PTA_CMD_GET_DEVICES_RPMB); > + if (!ret && service_count) > + ret = bind_service_list(dev, service_list, service_count); A dev_dbg print would help here. > + > + tee_shm_free(service_list); > + > + tee_close_session(dev, tee_sess); > +} > +#endif > + > /** > * reg_pair_to_ptr() - Make a pointer of 2 32-bit values > * @reg0: High bits of the pointer > @@ -852,6 +882,8 @@ static int optee_probe(struct udevice *dev) > ret = bind_service_drivers(dev); > if (ret) > dev_warn(dev, "optee service enumeration failed: %d\n", ret); > + else > + optee_bind_service_drivers_rpmb(dev); > } else if (IS_ENABLED(CONFIG_RNG_OPTEE)) { > /* > * Discovery of TAs on the TEE bus is not supported in U-Boot: > diff --git a/drivers/tee/optee/optee_private.h b/drivers/tee/optee/optee_private.h > index 1f07a27ee4b..b5a58df5b96 100644 > --- a/drivers/tee/optee/optee_private.h > +++ b/drivers/tee/optee/optee_private.h > @@ -79,4 +79,6 @@ static inline void optee_suppl_cmd_i2c_transfer(struct optee_msg_arg *arg) > > void *optee_alloc_and_init_page_list(void *buf, ulong len, u64 *phys_buf_ptr); > > +void optee_bind_service_drivers_rpmb(struct udevice *dev); > + Please wrap this like the other RPMB helpers in this header (#ifdef CONFIG_SUPPORT_EMMC_RPMB plus an empty inline stub), rather than a bare prototype. > #endif /* __OPTEE_PRIVATE_H */ > diff --git a/drivers/tee/optee/rpmb.c b/drivers/tee/optee/rpmb.c > index bacced6af6c..f4a66641755 100644 > --- a/drivers/tee/optee/rpmb.c > +++ b/drivers/tee/optee/rpmb.c > @@ -191,3 +191,14 @@ void optee_suppl_rpmb_release(struct udevice *dev) > { > release_mmc(dev_get_priv(dev)); > } > + > +void optee_rpmb_available(void) > +{ > + struct udevice *dev; > + struct uclass *uc; > + > + uclass_id_foreach_dev(UCLASS_TEE, dev, uc) { > + if (strcmp(dev->driver->name, "optee") == 0) > + optee_bind_service_drivers_rpmb(dev); > + } > +} > diff --git a/include/tee/optee.h b/include/tee/optee.h > index d1194493780..c12fda3cc73 100644 > --- a/include/tee/optee.h > +++ b/include/tee/optee.h > @@ -74,4 +74,6 @@ static inline bool is_optee_smc_api(void) > } > #endif > > +void optee_rpmb_available(void); > + When OPTEE=y and SUPPORT_EMMC_RPMB=n, where the call is made to optee_rpmb_avaliable but the symbol only lives in rpmb.o. Either stub when RPMB is off, or you can gate the MMC call on SUPPORT_EMMC_RPMB. > #endif /* _OPTEE_H */