From nobody Fri Jan 2 20:49:40 2026 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9732CE95A9D for ; Mon, 9 Oct 2023 15:35:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1377569AbjJIPfI (ORCPT ); Mon, 9 Oct 2023 11:35:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41896 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1377030AbjJIPey (ORCPT ); Mon, 9 Oct 2023 11:34:54 -0400 Received: from mail-wr1-x433.google.com (mail-wr1-x433.google.com [IPv6:2a00:1450:4864:20::433]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5864E8F for ; Mon, 9 Oct 2023 08:34:47 -0700 (PDT) Received: by mail-wr1-x433.google.com with SMTP id ffacd0b85a97d-3231dff4343so2796072f8f.0 for ; Mon, 09 Oct 2023 08:34:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bgdev-pl.20230601.gappssmtp.com; s=20230601; t=1696865686; x=1697470486; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=GC/5cw5j4gsHJ9iomK+6pv+kPUVJjLbCpiT9I+Feyy0=; b=BnxYVHWCYr5SIblnT1QwjfogTZQYHEBw4fakD7vpch1J+1jg8r4YxWreFnPKqfxwCC /pkacj5HgSLU9UP0IRsEvOyZY5DodAP/OhXWn5NQaqi+R7yGKTlNaEf/RViL7ZLKxINX gm5XPxNjDtjiLhLsNtiqyq2Mh2fFjvtH+en2dPIV4naBdthUxYgQz9wyo1EQaop0IHma hx/YgfzcTL3M5GkmMvvN4mbUdtKTJg12NXpDrjpDVJD1SHFmi7++hFNnJcoWLM9Dmsfv Vkt2KTtKP2ORyUTIltUgUpkk6/AZeHehzP686MFxTVITVEL5E4m2uLjwGwfWRbkcDNQs ampw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1696865686; x=1697470486; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=GC/5cw5j4gsHJ9iomK+6pv+kPUVJjLbCpiT9I+Feyy0=; b=EVZ6cicZ4XiZ7I3HlNepcZSIh2/nWCoytm4N+1ajckU2CEyifmdrL9RyAc19z5KCOk nuwhGbgDoGjufWi3YfKJLVWwHImEgVQ45zyhz9oi4Q3Wi4Y4smbTqy2HPSWlNdZTXj/s gRBBVcsux+lcK3j466jpCUgJhQhIyC+tmX0KxXeWkTp2A2TL2p0BC9FtXecg4BukaqkD 7JRUHehhub5g7BsMWD5gqDTdspezV5xpybZawEJND/7hzLtqKQTIfv0lfFd/va0gkaoj U+yWiw32oqVh6ff44m+ei1CgR8K9As885poyUnY9oXgZ8NH70d4/NrccAttFSmw2w4PY GfxQ== X-Gm-Message-State: AOJu0YzNC99LD9/A6zHlJbva9wPgrubbAGTZ9j7Z/FNOj2pBqWFbbQMw BnYTXke8wg5pRLg0N6aJYoDi4w== X-Google-Smtp-Source: AGHT+IE+HfAWUS8EXGsF6LOscm1uEzgc8ZH16XyVcqAUjQDAcQSh1QPeM3HmQfHBXNvqVn6joVLStQ== X-Received: by 2002:a5d:428b:0:b0:323:3b45:c452 with SMTP id k11-20020a5d428b000000b003233b45c452mr9526845wrq.14.1696865685819; Mon, 09 Oct 2023 08:34:45 -0700 (PDT) Received: from brgl-uxlite.home ([2a01:cb1d:334:ac00:f20d:2959:7545:e99f]) by smtp.gmail.com with ESMTPSA id b3-20020adff243000000b0031431fb40fasm10016521wrp.89.2023.10.09.08.34.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Oct 2023 08:34:45 -0700 (PDT) From: Bartosz Golaszewski To: Andy Gross , Bjorn Andersson , Konrad Dybcio , Elliot Berman , Krzysztof Kozlowski , Guru Das Srinagesh , Andrew Halaney , Maximilian Luz , Alex Elder , Srini Kandagatla Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kernel@quicinc.com, Bartosz Golaszewski Subject: [PATCH v3 05/15] firmware: qcom: scm: enable the TZ mem allocator Date: Mon, 9 Oct 2023 17:34:17 +0200 Message-Id: <20231009153427.20951-6-brgl@bgdev.pl> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231009153427.20951-1-brgl@bgdev.pl> References: <20231009153427.20951-1-brgl@bgdev.pl> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Bartosz Golaszewski Select the TrustZone memory allocator in Kconfig and create a pool of memory shareable with the TrustZone when probing the SCM driver. This will allow a gradual conversion of all relevant SCM calls to using the dedicated allocator. Signed-off-by: Bartosz Golaszewski --- drivers/firmware/qcom/Kconfig | 1 + drivers/firmware/qcom/qcom_scm.c | 16 ++++++++++++++++ 2 files changed, 17 insertions(+) diff --git a/drivers/firmware/qcom/Kconfig b/drivers/firmware/qcom/Kconfig index b80269a28224..237da40de832 100644 --- a/drivers/firmware/qcom/Kconfig +++ b/drivers/firmware/qcom/Kconfig @@ -7,6 +7,7 @@ menu "Qualcomm firmware drivers" =20 config QCOM_SCM + select QCOM_TZMEM tristate =20 config QCOM_TZMEM diff --git a/drivers/firmware/qcom/qcom_scm.c b/drivers/firmware/qcom/qcom_= scm.c index 520de9b5633a..0d4c028be0c1 100644 --- a/drivers/firmware/qcom/qcom_scm.c +++ b/drivers/firmware/qcom/qcom_scm.c @@ -8,8 +8,10 @@ #include #include #include +#include #include #include +#include #include #include #include @@ -20,9 +22,11 @@ #include #include #include +#include #include =20 #include "qcom_scm.h" +#include "qcom_tzmem.h" =20 static bool download_mode =3D IS_ENABLED(CONFIG_QCOM_SCM_DOWNLOAD_MODE_DEF= AULT); module_param(download_mode, bool, 0); @@ -41,6 +45,8 @@ struct qcom_scm { int scm_vote_count; =20 u64 dload_mode_addr; + + struct qcom_tzmem_pool *mempool; }; =20 struct qcom_scm_current_perm_info { @@ -1887,6 +1893,16 @@ static int qcom_scm_probe(struct platform_device *pd= ev) if (of_property_read_bool(pdev->dev.of_node, "qcom,sdi-enabled")) qcom_scm_disable_sdi(); =20 + ret =3D qcom_tzmem_enable(__scm->dev); + if (ret) + return dev_err_probe(__scm->dev, ret, + "Failed to enable the TrustZone memory allocator\n"); + + __scm->mempool =3D devm_qcom_tzmem_pool_new(__scm->dev, SZ_256K); + if (IS_ERR(__scm->mempool)) + return dev_err_probe(__scm->dev, PTR_ERR(__scm->mempool), + "Failed to create the SCM memory pool\n"); + /* * Initialize the QSEECOM interface. * --=20 2.39.2