From patchwork Wed Jul 22 20:10:47 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sibi Sankar X-Patchwork-Id: 11679179 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 5BC43913 for ; Wed, 22 Jul 2020 20:11:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4360320825 for ; Wed, 22 Jul 2020 20:11:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="paJ+8JML" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732812AbgGVULP (ORCPT ); Wed, 22 Jul 2020 16:11:15 -0400 Received: from mail29.static.mailgun.info ([104.130.122.29]:41483 "EHLO mail29.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732755AbgGVULO (ORCPT ); Wed, 22 Jul 2020 16:11:14 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1595448673; h=Content-Transfer-Encoding: MIME-Version: References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=REoXVWQbHijBuNKTFEkR7jVwMDFykpE2PFboAKq4xoI=; b=paJ+8JMLtppbiWg6yuvjaYftW3+izvjPwVK3mcqmZerrAc0w5MMXGziLceCt8RIsnIo9inrm tLwk3JGEX2OJrWbmfWgenM0xSflug25EuRfL57K0NddNyQ25d2EJX9pqMq0mwtNR0M1xK9e0 hfe6HhBeDDkix7QTeScFN9NeEQ0= X-Mailgun-Sending-Ip: 104.130.122.29 X-Mailgun-Sid: WyI4ZWZiZiIsICJsaW51eC1yZW1vdGVwcm9jQHZnZXIua2VybmVsLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n09.prod.us-east-1.postgun.com with SMTP id 5f189d6165270fa5953aeb2c (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Wed, 22 Jul 2020 20:11:13 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id E3B65C433A0; Wed, 22 Jul 2020 20:11:12 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=2.0 tests=ALL_TRUSTED,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.0 Received: from blr-ubuntu-253.qualcomm.com (blr-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.18.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: sibis) by smtp.codeaurora.org (Postfix) with ESMTPSA id A1D69C43391; Wed, 22 Jul 2020 20:11:09 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org A1D69C43391 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=sibis@codeaurora.org From: Sibi Sankar To: bjorn.andersson@linaro.org Cc: agross@kernel.org, linux-arm-msm@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, evgreen@chromium.org, ohad@wizery.com, Sibi Sankar Subject: [PATCH v3 3/3] remoteproc: qcom_q6v5_mss: Add modem debug policy support Date: Thu, 23 Jul 2020 01:40:47 +0530 Message-Id: <20200722201047.12975-4-sibis@codeaurora.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200722201047.12975-1-sibis@codeaurora.org> References: <20200722201047.12975-1-sibis@codeaurora.org> MIME-Version: 1.0 Sender: linux-remoteproc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.org Add modem debug policy support which will enable coredumps and live debug support when the msadp firmware is present on secure devices. Signed-off-by: Sibi Sankar Reviewed-by: Bjorn Andersson --- v3: * Fix dp_fw leak and create a separate func for dp load [Bjorn] * Reset dp_size on mba_reclaim v2: * Use request_firmware_direct [Bjorn] * Use Bjorn's template to show if debug policy is present * Add size check to prevent memcpy out of bounds [Bjorn] drivers/remoteproc/qcom_q6v5_mss.c | 25 ++++++++++++++++++++++++- 1 file changed, 24 insertions(+), 1 deletion(-) diff --git a/drivers/remoteproc/qcom_q6v5_mss.c b/drivers/remoteproc/qcom_q6v5_mss.c index f4aa61ba220dc..da99c8504a346 100644 --- a/drivers/remoteproc/qcom_q6v5_mss.c +++ b/drivers/remoteproc/qcom_q6v5_mss.c @@ -191,6 +191,7 @@ struct q6v5 { phys_addr_t mba_phys; void *mba_region; size_t mba_size; + size_t dp_size; phys_addr_t mpss_phys; phys_addr_t mpss_reloc; @@ -408,6 +409,21 @@ static int q6v5_xfer_mem_ownership(struct q6v5 *qproc, int *current_perm, current_perm, next, perms); } +static void q6v5_debug_policy_load(struct q6v5 *qproc) +{ + const struct firmware *dp_fw; + + if (request_firmware_direct(&dp_fw, "msadp", qproc->dev)) + return; + + if (SZ_1M + dp_fw->size <= qproc->mba_size) { + memcpy(qproc->mba_region + SZ_1M, dp_fw->data, dp_fw->size); + qproc->dp_size = dp_fw->size; + } + + release_firmware(dp_fw); +} + static int q6v5_load(struct rproc *rproc, const struct firmware *fw) { struct q6v5 *qproc = rproc->priv; @@ -419,6 +435,7 @@ static int q6v5_load(struct rproc *rproc, const struct firmware *fw) } memcpy(qproc->mba_region, fw->data, fw->size); + q6v5_debug_policy_load(qproc); return 0; } @@ -928,6 +945,10 @@ static int q6v5_mba_load(struct q6v5 *qproc) } writel(qproc->mba_phys, qproc->rmb_base + RMB_MBA_IMAGE_REG); + if (qproc->dp_size) { + writel(qproc->mba_phys + SZ_1M, qproc->rmb_base + RMB_PMI_CODE_START_REG); + writel(qproc->dp_size, qproc->rmb_base + RMB_PMI_CODE_LENGTH_REG); + } ret = q6v5proc_reset(qproc); if (ret) @@ -996,6 +1017,7 @@ static void q6v5_mba_reclaim(struct q6v5 *qproc) u32 val; qproc->dump_mba_loaded = false; + qproc->dp_size = 0; q6v5proc_halt_axi_port(qproc, qproc->halt_map, qproc->halt_q6); q6v5proc_halt_axi_port(qproc, qproc->halt_map, qproc->halt_modem); @@ -1290,7 +1312,8 @@ static int q6v5_start(struct rproc *rproc) if (ret) return ret; - dev_info(qproc->dev, "MBA booted, loading mpss\n"); + dev_info(qproc->dev, "MBA booted with%s debug policy, loading mpss\n", + qproc->dp_size ? "" : "out"); ret = q6v5_mpss_load(qproc); if (ret)