From nobody Fri Jan 2 02:20:39 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 2AF39CDB474 for ; Tue, 17 Oct 2023 09:28:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343674AbjJQJ2Q (ORCPT ); Tue, 17 Oct 2023 05:28:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48448 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234855AbjJQJ1x (ORCPT ); Tue, 17 Oct 2023 05:27:53 -0400 Received: from mail-wm1-x329.google.com (mail-wm1-x329.google.com [IPv6:2a00:1450:4864:20::329]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7CFC71AD for ; Tue, 17 Oct 2023 02:27:44 -0700 (PDT) Received: by mail-wm1-x329.google.com with SMTP id 5b1f17b1804b1-408002b5b9fso2148495e9.3 for ; Tue, 17 Oct 2023 02:27:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bgdev-pl.20230601.gappssmtp.com; s=20230601; t=1697534863; x=1698139663; 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=Y8azA4SdwAI3O+M9NxjKvwETkPtXq8E9q96rJRgU4/c=; b=qj7zXFLM5kvdHqla76QjSNAaSGWWmIbl8s4nymQocY8oZftSceNPqtD6dgQo1GAB8J fXVJOuGPiuWbI094nnj49Bg1mDxSfch8OgT6cGt3hQ50uOBDpFdyKqGMMLfOY5I9v72i 8PuBN4UI5fEWCBXi3B81tFN+hHWTgc7nqA+j50DrdTCeR+paGObNdr0r/g5v3W9gwr6P OOX+UNc33PsaPh8QN4ckdfpiSR3HAhUbmklPADVl9uYnN/rC2npjYjqPNhXWLD96GvM6 zagzHJ8pP16y5lp+GfVwyyZmoEzzABRIygZJD3wfn2uE2vmG5W7Q0gLar+46KLPgk436 ej+w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697534863; x=1698139663; 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=Y8azA4SdwAI3O+M9NxjKvwETkPtXq8E9q96rJRgU4/c=; b=mfnomYzcDD6j2z2oxqd85rNU6ug3jw7WaLk7zNPvuNGaMaDlC/apMeJX5yZDKhxJYq 3KF65SWhGk5CjFQWtMiD6bKWFJXh/y6IgZTNNSwdiQVpgbIFAcbBR2anxtYZcPHdoatj zmTQoUFo4EeTjhHeUof1yYmD8Mpl+rxZp++FQ2MLctNmDWpHXX1nUMdpyrI03tIvqIvi WwCetYXr72O7deftMt1YJCVgMMvxA+mgigvUh2KUCovTQIP3HCJkBjUrVPEdTukcDNxR bjHVpsWAyoSLhfCkQ974teuSlM5hyoKAV/A14URZf1WG6n1s1SAyNmuqounZS0dIhFVn ICpA== X-Gm-Message-State: AOJu0Yx9DIv+gF9T5CvpXYNgirRFjeoI6JxVVo5rv6xdsZlvmrQGY7QV xy/L/YVTger+w9PdHoz06CB+jg== X-Google-Smtp-Source: AGHT+IHflIoUzX5n/LgAwZCY1tCYKHPMyHblRzgofmZ3EfYlYUSmeSipZ1D1TPvCFQDa208MDhrgrQ== X-Received: by 2002:a05:600c:3155:b0:407:8129:46ec with SMTP id h21-20020a05600c315500b00407812946ecmr1224531wmo.24.1697534862925; Tue, 17 Oct 2023 02:27:42 -0700 (PDT) Received: from brgl-uxlite.home ([2a01:cb1d:334:ac00:f1ee:b000:ce90:ed14]) by smtp.gmail.com with ESMTPSA id j5-20020a05600c1c0500b003fe1c332810sm9460787wms.33.2023.10.17.02.27.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 17 Oct 2023 02:27:42 -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 v5 05/15] firmware: qcom: scm: enable the TZ mem allocator Date: Tue, 17 Oct 2023 11:27:22 +0200 Message-Id: <20231017092732.19983-6-brgl@bgdev.pl> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231017092732.19983-1-brgl@bgdev.pl> References: <20231017092732.19983-1-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 Reviewed-by: Andrew Halaney Tested-by: Andrew Halaney # sc8280xp-lenovo-thinkpad-= x13s --- 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