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[2620:137:e000::1:20]) by mx.google.com with ESMTP id d14-20020aa7d68e000000b004acd1bb4a2csi2340561edr.13.2023.02.21.06.52.54; Tue, 21 Feb 2023 06:53:17 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@quicinc.com header.s=qcppdkim1 header.b=RhMoCOZE; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=quicinc.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234529AbjBUOkG (ORCPT + 99 others); Tue, 21 Feb 2023 09:40:06 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60292 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234519AbjBUOkC (ORCPT ); Tue, 21 Feb 2023 09:40:02 -0500 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B703227D68; Tue, 21 Feb 2023 06:40:01 -0800 (PST) Received: from pps.filterd (m0279865.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 31LCV1lQ019807; Tue, 21 Feb 2023 14:39:59 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=qcppdkim1; bh=cZ8G6Fbv9w/93PaVSEkBvSh58zKcC6k0drrVHDqaSUs=; b=RhMoCOZEx72KdUidqeTsEAZyzTwgzUwMFDRRuIjlgzBS0kWsGgz4aUDav/KK1FT1lczV 3Q5oiqrI5wKRpt2/qy7BqfaxraJGCoJdFiphMrYu7J/lXEnwaFhVF8POo4zjjK+UJMjL K5+f2gkJmRttUYnJV8jnv2RXb09cDSakqumn6CIfuckjN7aRTpw3tdy/mGmcUYRoavH/ LeI24PwErw6gjBwQDQiTpZNbJkAFshr/1tOIohjgPo5DghZm0EcoyV5b/mq6/1iCgvYs 4Dlf8UYbXgVGl5MLZO2NUitzRm9na+tdvWkeFTsn0o4EzGwoxFZv8sygp1ru3UmTeHbO bQ== Received: from nasanppmta03.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3nvtmm0qq4-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 21 Feb 2023 14:39:59 +0000 Received: from nasanex01c.na.qualcomm.com (nasanex01c.na.qualcomm.com [10.45.79.139]) by NASANPPMTA03.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 31LEdwCn021228 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 21 Feb 2023 14:39:58 GMT Received: from hu-mojha-hyd.qualcomm.com (10.80.80.8) by nasanex01c.na.qualcomm.com (10.45.79.139) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.41; Tue, 21 Feb 2023 06:39:56 -0800 From: Mukesh Ojha To: , , CC: , , "Mukesh Ojha" Subject: [PATCH 1/4] firmware: qcom_scm: Clear download bit during reboot Date: Tue, 21 Feb 2023 20:09:38 +0530 Message-ID: <1676990381-18184-2-git-send-email-quic_mojha@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1676990381-18184-1-git-send-email-quic_mojha@quicinc.com> References: <1676990381-18184-1-git-send-email-quic_mojha@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nasanex01c.na.qualcomm.com (10.45.79.139) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: 2X-eNOBngmFzbjiZ4BZh78m4U8k2HraL X-Proofpoint-ORIG-GUID: 2X-eNOBngmFzbjiZ4BZh78m4U8k2HraL X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.930,Hydra:6.0.562,FMLib:17.11.170.22 definitions=2023-02-21_08,2023-02-20_02,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 bulkscore=0 priorityscore=1501 impostorscore=0 suspectscore=0 adultscore=0 clxscore=1015 mlxlogscore=999 mlxscore=0 phishscore=0 lowpriorityscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2302210122 X-Spam-Status: No, score=-2.8 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_LOW,SPF_HELO_NONE, SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1758452722295618091?= X-GMAIL-MSGID: =?utf-8?q?1758452722295618091?= During normal restart of a system download bit should be cleared irrespective of whether download mode is set or not. Signed-off-by: Mukesh Ojha --- drivers/firmware/qcom_scm.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c index cdbfe54..51eb853 100644 --- a/drivers/firmware/qcom_scm.c +++ b/drivers/firmware/qcom_scm.c @@ -1418,8 +1418,7 @@ static int qcom_scm_probe(struct platform_device *pdev) static void qcom_scm_shutdown(struct platform_device *pdev) { /* Clean shutdown, disable download mode to allow normal restart */ - if (download_mode) - qcom_scm_set_download_mode(false); + qcom_scm_set_download_mode(false); } static const struct of_device_id qcom_scm_dt_match[] = { From patchwork Tue Feb 21 14:39:39 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mukesh Ojha X-Patchwork-Id: 60120 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a5d:5915:0:0:0:0:0 with SMTP id v21csp50482wrd; Tue, 21 Feb 2023 06:53:01 -0800 (PST) X-Google-Smtp-Source: AK7set+jg6WZX2nLmEofOJ2ESFfFf7pOuUfywqi6B9yfDfqMkFBfgXB45xEkt2ZTxoMEStbF+bfA X-Received: by 2002:aa7:cb47:0:b0:4ad:118f:fcbf with SMTP id w7-20020aa7cb47000000b004ad118ffcbfmr5447873edt.20.1676991181442; Tue, 21 Feb 2023 06:53:01 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1676991181; cv=none; d=google.com; s=arc-20160816; b=mlYuzkmFV4NIWye0SwtsHnnYn07ChzrsUlyR8EgMlffFHxAaukUdK5OjWcDageMiFx fMsOztgNKsppytUp0uvibI/p4lPXbb8McLF+D8t9eJPBnnq1tPM+BcU1oUS6N0ekeuwd 3KuFH0zZc9juoGUjRv61B/fMnglihWO5BeE2inbSdvi1x5r6UPocf6pOIYsao2mD34Qv oQOzTg6UTcHewKHP7kr8I4tn9rapcYExKpZdt5OjZE+GmDJW/tHPImsIXJSF6e1+NE9y WVBm7b7pJB10ThqLQNjxshr34aE0Lg2kjdK8qOar6HtrMQOWXcJ5u/OYkt3mcYKG6gLP bszA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:mime-version:references:in-reply-to:message-id :date:subject:cc:to:from:dkim-signature; bh=dTRZq12Qz9rt2O6WShBVkzn0CSn1DSKpczXU5AMMJtA=; b=EDeX9haP7JXq8FUXdqtV5RoXKBeEQTSmXSYYxYaiKvkwJCB1Q9GR9qRq2CC4bbS5Rw O7b4VOKxNVb3T+0kvDocXvphJ6sQrc68GdgCJxCKS9dfDbQmEaSawpnLp5/PtG2yrW4t XTGRjMgZNsltLRThdUApCP9POPIFZaW3xwiIQhkpFA8w4eITVHZk+82W0uzHmbcw1QGa 4nTkSQiMUk1fDQ2WHEoOt6P52j2hmzI9AmudQ9C/qSs55e2khsNmHkJDzuVGc+UBfM3B w6DkQzwgkzVxtL40CnKFNn5d4ct09NHNz1a3Sn8LA6CuOdkFNyqT086lA8aw4r9dv7vm 11yw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@quicinc.com header.s=qcppdkim1 header.b=egCMX9zU; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=quicinc.com Received: from out1.vger.email (out1.vger.email. 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To retain other bits, we read the register and modify only the DLOAD bit as the other bits have their own significance. Originally-by: Poovendhan Selvaraj Signed-off-by: Mukesh Ojha --- drivers/firmware/qcom_scm.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c index 51eb853..c376ba8 100644 --- a/drivers/firmware/qcom_scm.c +++ b/drivers/firmware/qcom_scm.c @@ -419,6 +419,7 @@ static void qcom_scm_set_download_mode(bool enable) { bool avail; int ret = 0; + u32 dload_addr_val; avail = __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_BOOT, @@ -426,8 +427,16 @@ static void qcom_scm_set_download_mode(bool enable) if (avail) { ret = __qcom_scm_set_dload_mode(__scm->dev, enable); } else if (__scm->dload_mode_addr) { - ret = qcom_scm_io_writel(__scm->dload_mode_addr, - enable ? QCOM_SCM_BOOT_SET_DLOAD_MODE : 0); + ret = qcom_scm_io_readl(__scm->dload_mode_addr, &dload_addr_val); + if (ret) { + dev_err(__scm->dev, + "failed to read dload mode address value: %d\n", ret); + return; + } + + ret = qcom_scm_io_writel(__scm->dload_mode_addr, enable ? + dload_addr_val | QCOM_SCM_BOOT_SET_DLOAD_MODE : + dload_addr_val & ~(QCOM_SCM_BOOT_SET_DLOAD_MODE)); } else { dev_err(__scm->dev, "No available mechanism for setting download mode\n"); From patchwork Tue Feb 21 14:39:40 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mukesh Ojha X-Patchwork-Id: 60119 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a5d:5915:0:0:0:0:0 with SMTP id v21csp50239wrd; Tue, 21 Feb 2023 06:52:35 -0800 (PST) X-Google-Smtp-Source: AK7set9/NK9xOWLKcIwTkp3e5l67tSDUj9Kr4Z8Jnh3kNl+aZ8kB5WwNKFQq98zD7fl38Bt3KBv4 X-Received: by 2002:a17:907:a801:b0:8b1:304e:589e with SMTP id vo1-20020a170907a80100b008b1304e589emr13802199ejc.53.1676991155513; Tue, 21 Feb 2023 06:52:35 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1676991155; cv=none; d=google.com; s=arc-20160816; b=lSODDd2kae+pIQ30saywxvv2S++zUqhBoa/lgTAIeVUW9bhSqeWKYHHDC7bDlWIG/S B2JTy/hiNWGjA0u0KYCqoUUJUcCxSjWLXUpqsav+RSHQqkXJeLwyqv/dEAbLDVzHWpYT 95HMnul9zsd/M2ZBiCqmhiQLzrheq4+8JTFT76pJ6qNtVN77w/Uuk+b3zCg7zshKh8oT CgSAErxvDvB8W+QXFgmrQcLVe8tLm/o/mkeYj6Gn5Njelp9g/5w1Omaqdhvh+2LA06kj Xt0jocqEC2qBUoI6ggz/ZY4a1lw0uiz1zzkIMPrzOgw9ngJrMScPDKH/DpM/9U45+k/j 1n/g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:mime-version:references:in-reply-to:message-id :date:subject:cc:to:from:dkim-signature; bh=IwZRW6l6jcYWknvtnXsL53z2sTmEbJH1YXShJA0h5bs=; b=D2vreDeXIJbb4NLFDU4SuewLZR/1u1b9hvsG7L4MX7Imy6HYIYSdYppiuYnPQCdZzJ CXSCjFkwwPyjmC6FqsvxKmt4BlC5rKxEt2KBH8sOJ+4Tw0G7411wjHUyOZ6Kiy6n9gLu ieZKAHsulVe6fuu1ynNVJhVwM70/kaZhlCrPuADyAAW5qPsLYlhdppCXF+RACx64vqFv uIHYiwfGwIsU5pXeOF+hCPoitFd+fWJL9Vm0bv3A8iZckvijvS0dzRiK6zdDst+RNOcZ PU9ccY9lDnF4v7Xw0zJpdzqDwaB77FRHs5ROqKll1Fw4EI59g0nuGYSH8afs7ZQOYP3R 1Cpg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@quicinc.com header.s=qcppdkim1 header.b=c7Ctk13A; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=quicinc.com Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id 24-20020a17090601d800b008ccf9fd2186si12811105ejj.867.2023.02.21.06.52.12; Tue, 21 Feb 2023 06:52:35 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@quicinc.com header.s=qcppdkim1 header.b=c7Ctk13A; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=quicinc.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234560AbjBUOkR (ORCPT + 99 others); Tue, 21 Feb 2023 09:40:17 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60614 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234550AbjBUOkJ (ORCPT ); Tue, 21 Feb 2023 09:40:09 -0500 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 18C3628D1E; Tue, 21 Feb 2023 06:40:08 -0800 (PST) Received: from pps.filterd (m0279872.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 31LDZRmB001877; Tue, 21 Feb 2023 14:40:04 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=qcppdkim1; bh=IwZRW6l6jcYWknvtnXsL53z2sTmEbJH1YXShJA0h5bs=; b=c7Ctk13AI+M4m6CO6tiPMDBaAuo/sq/5uEAFU5IMoM9NggLsvSaakBI4uaEV0ICpgRt2 9VKUhCpDwbdAkv0ZigFe6W9u95ECFKu5F6xGbhuUH9QMmVWeLEGYTlqhacyLQ/VEIE8h SaTTP5SXgv61xOfIsgRp2SC7kHqrJ70eFd8DhrJvWblmbX1ZaysAJYza3Z9FnuHPQdsk Pw0UWUoT9B6G4+uaYdN6PkNcUV6bpmJV/opBoAKGeTjzrCZ0JkBPgjpl2UI8JoZXw2Si aOhMO02ht6A43xhsWJca8bm0Cz4UKO0Oll6edvgRT4+leQifHG/1XCQVxAUluj0RcVA/ XQ== Received: from nasanppmta04.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3nvn8r9fh2-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 21 Feb 2023 14:40:04 +0000 Received: from nasanex01c.na.qualcomm.com (nasanex01c.na.qualcomm.com [10.45.79.139]) by NASANPPMTA04.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 31LEe31L009009 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 21 Feb 2023 14:40:03 GMT Received: from hu-mojha-hyd.qualcomm.com (10.80.80.8) by nasanex01c.na.qualcomm.com (10.45.79.139) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.41; Tue, 21 Feb 2023 06:40:01 -0800 From: Mukesh Ojha To: , , CC: , , "Mukesh Ojha" Subject: [PATCH 3/4] firmware: qcom_scm: Refactor code to support multiple download mode Date: Tue, 21 Feb 2023 20:09:40 +0530 Message-ID: <1676990381-18184-4-git-send-email-quic_mojha@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1676990381-18184-1-git-send-email-quic_mojha@quicinc.com> References: <1676990381-18184-1-git-send-email-quic_mojha@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nasanex01c.na.qualcomm.com (10.45.79.139) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: Q2MuaXBZa5fxC0UqRbflHwrWp1IRLlId X-Proofpoint-ORIG-GUID: Q2MuaXBZa5fxC0UqRbflHwrWp1IRLlId X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.930,Hydra:6.0.562,FMLib:17.11.170.22 definitions=2023-02-21_08,2023-02-20_02,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 phishscore=0 mlxlogscore=999 bulkscore=0 adultscore=0 mlxscore=0 clxscore=1015 impostorscore=0 spamscore=0 priorityscore=1501 lowpriorityscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2302210122 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1758452677719026628?= X-GMAIL-MSGID: =?utf-8?q?1758452677719026628?= Currently on Qualcomm SoC, download_mode is enabled if CONFIG_QCOM_SCM_DOWNLOAD_MODE_DEFAULT is selected. Refactor the code such that it supports multiple download modes and drop the config. Signed-off-by: Mukesh Ojha --- drivers/firmware/Kconfig | 11 ----------- drivers/firmware/qcom_scm.c | 45 +++++++++++++++++++++++++++++++++++++++------ include/linux/qcom_scm.h | 4 ++++ 3 files changed, 43 insertions(+), 17 deletions(-) diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig index b59e304..ff7e9f3 100644 --- a/drivers/firmware/Kconfig +++ b/drivers/firmware/Kconfig @@ -215,17 +215,6 @@ config MTK_ADSP_IPC config QCOM_SCM tristate -config QCOM_SCM_DOWNLOAD_MODE_DEFAULT - bool "Qualcomm download mode enabled by default" - depends on QCOM_SCM - help - A device with "download mode" enabled will upon an unexpected - warm-restart enter a special debug mode that allows the user to - "download" memory content over USB for offline postmortem analysis. - The feature can be enabled/disabled on the kernel command line. - - Say Y here to enable "download mode" by default. - config SYSFB bool select BOOT_VESA_SUPPORT diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c index c376ba8..4975d3c 100644 --- a/drivers/firmware/qcom_scm.c +++ b/drivers/firmware/qcom_scm.c @@ -20,8 +20,43 @@ #include "qcom_scm.h" -static bool download_mode = IS_ENABLED(CONFIG_QCOM_SCM_DOWNLOAD_MODE_DEFAULT); -module_param(download_mode, bool, 0); +static unsigned int download_mode; +static struct qcom_scm *__scm; +static void qcom_scm_set_download_mode(bool enable); +static int set_dload_mode(const char *val, const struct kernel_param *kp) +{ + int ret; + int old_mode = download_mode; + + ret = param_set_int(val, kp); + if (ret) + return ret; + + switch (download_mode) { + case QCOM_DOWNLOAD_FULLDUMP: + if (__scm) + qcom_scm_set_download_mode(true); + break; + case QCOM_DOWNLOAD_NODUMP: + if (__scm) + qcom_scm_set_download_mode(false); + break; + default: + pr_err("unknown download mode\n"); + download_mode = old_mode; + return -EINVAL; + } + + return 0; +} + +static const struct kernel_param_ops dload_mode_param_ops = { + .set = set_dload_mode, + .get = param_get_hexint, +}; +module_param_cb(download_mode, &dload_mode_param_ops, &download_mode, 0644); +MODULE_PARM_DESC(download_mode, + "Download mode: 0x0=no dump mode (default), 0x10=full dump mode"); #define SCM_HAS_CORE_CLK BIT(0) #define SCM_HAS_IFACE_CLK BIT(1) @@ -70,8 +105,6 @@ static const char * const qcom_scm_convention_names[] = { [SMC_CONVENTION_LEGACY] = "smc legacy", }; -static struct qcom_scm *__scm; - static int qcom_scm_clk_enable(void) { int ret; @@ -435,8 +468,8 @@ static void qcom_scm_set_download_mode(bool enable) } ret = qcom_scm_io_writel(__scm->dload_mode_addr, enable ? - dload_addr_val | QCOM_SCM_BOOT_SET_DLOAD_MODE : - dload_addr_val & ~(QCOM_SCM_BOOT_SET_DLOAD_MODE)); + ((dload_addr_val & ~QCOM_DOWNLOAD_MODE_MASK) | download_mode) : + dload_addr_val & ~QCOM_DOWNLOAD_MODE_MASK); } else { dev_err(__scm->dev, "No available mechanism for setting download mode\n"); diff --git a/include/linux/qcom_scm.h b/include/linux/qcom_scm.h index f833564..dd6aced 100644 --- a/include/linux/qcom_scm.h +++ b/include/linux/qcom_scm.h @@ -14,6 +14,10 @@ #define QCOM_SCM_CPU_PWR_DOWN_L2_OFF 0x1 #define QCOM_SCM_HDCP_MAX_REQ_CNT 5 +#define QCOM_DOWNLOAD_MODE_MASK 0x30 +#define QCOM_DOWNLOAD_NODUMP 0x0 +#define QCOM_DOWNLOAD_FULLDUMP 0x10 + struct qcom_scm_hdcp_req { u32 addr; u32 val; From patchwork Tue Feb 21 14:39:41 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mukesh Ojha X-Patchwork-Id: 60118 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a5d:5915:0:0:0:0:0 with SMTP id v21csp49540wrd; Tue, 21 Feb 2023 06:51:08 -0800 (PST) X-Google-Smtp-Source: AK7set9SgPBZx1zto4BczlkeHl7ltYA9KWnTDNQZmqdBd/DAWmClJ/F++jod0o8lqOS3EWIjwaw7 X-Received: by 2002:a17:907:6d0a:b0:8af:4418:8700 with SMTP id sa10-20020a1709076d0a00b008af44188700mr17552839ejc.47.1676991068256; Tue, 21 Feb 2023 06:51:08 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1676991068; cv=none; d=google.com; s=arc-20160816; b=r5YdrQs+jXvxkHURli5PA7KTJTM3RTUhP0GyTX8TFuts/OGe1g6OYySOf7/VWEkvtg 5Pg2fIbJUip6lnUypP/jXi7q7dsibspy1CFY4rVMhhJbrLrHzMhS/8QNDFdKHl90aMXn JuCWp0ildm+R1ZSsbV66JbZns8ng61HvBioBZE4OZr2C3YC4l/r7CTgvENywtcZ59MTt Yj7D/BDPkuEInJGZ49BYuepfOwBOVd+q4DiYlUVuhPeQEk8ZXoxG84syvDcy+gsNjh5L xO4NRl/qPguna+AkOlpmIQS1jwq7MSpn2pIMectbU61Jo5M0iVHaLtQVbeTd/++SM5UF pnNA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:mime-version:references:in-reply-to:message-id :date:subject:cc:to:from:dkim-signature; bh=XwI+g78iar6iebOl3PnrPCN4WLZBQYovSpKT7M6IcVo=; b=IUvFq7Q0LF4W4nvLY1dSHV6P/Czxpxv90C9saI1xu1xniVdou9epQzCZBMfDoL+PkP SlZoFtXLP+ptWBDR6GN0oSCJdAzwqNP99KbeJZyhziy2hNEXKAd/ZzyXhmDBIgNXMqe6 xi2/7ocqllrk7kJFbsTR3K3QKvi2ZqGnJdevZLj7lsv+IvN0yAuMiVgYGD0kNcBv+Hf9 IbEXZMRi6oXF6GG8HFa8fMqoUUzMbXFmNMB8aTBhAq5KYO7D7mC38v3/6TbvKfj4Psq6 SrEKpxR/bsx0ONL+grdKoU7UG5nHKwuyoaiH10JIG8ZujMsgO/QbVPdJZCUYJozaSWLE s0dw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@quicinc.com header.s=qcppdkim1 header.b=cxZfoHOU; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=quicinc.com Received: from out1.vger.email (out1.vger.email. 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Add support to enable minidump as well both dump(full dump + minidump). Signed-off-by: Mukesh Ojha --- drivers/firmware/qcom_scm.c | 5 ++++- include/linux/qcom_scm.h | 2 ++ 2 files changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c index 4975d3c..b7a2715 100644 --- a/drivers/firmware/qcom_scm.c +++ b/drivers/firmware/qcom_scm.c @@ -34,6 +34,8 @@ static int set_dload_mode(const char *val, const struct kernel_param *kp) switch(download_mode) { case QCOM_DOWNLOAD_FULLDUMP: + case QCOM_DOWNLOAD_MINIDUMP: + case QCOM_DOWNLOAD_BOTHDUMP: if (__scm) qcom_scm_set_download_mode(true); break; @@ -56,7 +58,8 @@ static const struct kernel_param_ops dload_mode_param_ops = { }; module_param_cb(download_mode, &dload_mode_param_ops, &download_mode, 0644); MODULE_PARM_DESC(download_mode, - "Download mode: 0x0=no dump mode (default), 0x10=full dump mode"); + "Download mode: 0x0=no dump mode (default), 0x10=full dump mode, " + "0x20=mini dump mode 0x30=both(full + mini)dump mode"); #define SCM_HAS_CORE_CLK BIT(0) #define SCM_HAS_IFACE_CLK BIT(1) diff --git a/include/linux/qcom_scm.h b/include/linux/qcom_scm.h index dd6aced..8304c73c 100644 --- a/include/linux/qcom_scm.h +++ b/include/linux/qcom_scm.h @@ -17,6 +17,8 @@ #define QCOM_DOWNLOAD_MODE_MASK 0x30 #define QCOM_DOWNLOAD_NODUMP 0x0 #define QCOM_DOWNLOAD_FULLDUMP 0x10 +#define QCOM_DOWNLOAD_MINIDUMP 0x20 +#define QCOM_DOWNLOAD_BOTHDUMP (QCOM_DOWNLOAD_FULLDUMP | QCOM_DOWNLOAD_MINIDUMP) struct qcom_scm_hdcp_req { u32 addr;