From patchwork Tue Nov 13 18:14:06 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Gong X-Patchwork-Id: 10681183 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 701731759 for ; Tue, 13 Nov 2018 18:06:55 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 630A52B048 for ; Tue, 13 Nov 2018 18:06:55 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 5270F2B06E; Tue, 13 Nov 2018 18:06:55 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9F1D52B048 for ; Tue, 13 Nov 2018 18:06:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732676AbeKNEGA (ORCPT ); Tue, 13 Nov 2018 23:06:00 -0500 Received: from mga02.intel.com ([134.134.136.20]:59581 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732229AbeKNEF7 (ORCPT ); Tue, 13 Nov 2018 23:05:59 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 13 Nov 2018 10:06:46 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.56,229,1539673200"; d="scan'208";a="279519696" Received: from marshy.an.intel.com ([10.122.105.159]) by fmsmga005.fm.intel.com with ESMTP; 13 Nov 2018 10:06:45 -0800 From: richard.gong@linux.intel.com To: gregkh@linuxfoundation.org, catalin.marinas@arm.com, will.deacon@arm.com, dinguyen@kernel.org, robh+dt@kernel.org, mark.rutland@arm.com, atull@kernel.org, mdf@kernel.org, arnd@arndb.de, corbet@lwn.net Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-fpga@vger.kernel.org, linux-doc@vger.kernel.org, todd.riffel@intel.com, richard.gong@linux.intel.com, richard.gong@intel.com Subject: [PATCHv11 8/8] firmware: add remote status update client support Date: Tue, 13 Nov 2018 12:14:06 -0600 Message-Id: <1542132846-24168-9-git-send-email-richard.gong@linux.intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1542132846-24168-1-git-send-email-richard.gong@linux.intel.com> References: <1542132846-24168-1-git-send-email-richard.gong@linux.intel.com> Sender: linux-fpga-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fpga@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Richard Gong Extend Intel Stratix10 service layer to support the second service layer client, Remote Status Update (RSU). RSU is used to provide our customers with protection against loading bad bitstreams onto their devices when those devices are booting from flash. Signed-off-by: Richard Gong Signed-off-by: Alan Tull --- v7: this patch is added in patch set version 7 v8: no change v9: add case for COMMAND_RSU_UPDATE at svc_thread_recv_status_ok() at stratix10-svc.c file add RSU related definitions at stratix10-smc.h file v10: s/misc/firmware at commit header v11: correct a typo in commit message --- drivers/firmware/stratix10-svc.c | 35 +++++++++++++++- include/linux/firmware/intel/stratix10-smc.h | 47 ++++++++++++++++++++++ .../linux/firmware/intel/stratix10-svc-client.h | 20 ++++++++- 3 files changed, 98 insertions(+), 4 deletions(-) diff --git a/drivers/firmware/stratix10-svc.c b/drivers/firmware/stratix10-svc.c index 168f523..81f3182 100644 --- a/drivers/firmware/stratix10-svc.c +++ b/drivers/firmware/stratix10-svc.c @@ -34,7 +34,7 @@ * timeout is set to 30 seconds (30 * 1000) at Intel Stratix10 SoC. */ #define SVC_NUM_DATA_IN_FIFO 32 -#define SVC_NUM_CHANNEL 1 +#define SVC_NUM_CHANNEL 2 #define FPGA_CONFIG_DATA_CLAIM_TIMEOUT_MS 200 #define FPGA_CONFIG_STATUS_TIMEOUT_SEC 30 @@ -271,7 +271,7 @@ static void svc_thread_cmd_config_status(struct stratix10_svc_controller *ctrl, * @cb_data: pointer to callback data structure to service client * @res: result from SMC or HVC call * - * Send back the correspond status to the service client (FPGA manager etc). + * Send back the correspond status to the service clients. */ static void svc_thread_recv_status_ok(struct stratix10_svc_data *p_data, struct stratix10_svc_cb_data *cb_data, @@ -295,6 +295,9 @@ static void svc_thread_recv_status_ok(struct stratix10_svc_data *p_data, case COMMAND_RECONFIG_STATUS: cb_data->status = BIT(SVC_STATUS_RECONFIG_COMPLETED); break; + case COMMAND_RSU_UPDATE: + cb_data->status = BIT(SVC_STATUS_RSU_OK); + break; default: pr_warn("it shouldn't happen\n"); break; @@ -373,6 +376,16 @@ static int svc_normal_to_secure_thread(void *data) a1 = 0; a2 = 0; break; + case COMMAND_RSU_STATUS: + a0 = INTEL_SIP_SMC_RSU_STATUS; + a1 = 0; + a2 = 0; + break; + case COMMAND_RSU_UPDATE: + a0 = INTEL_SIP_SMC_RSU_UPDATE; + a1 = pdata->arg[0]; + a2 = 0; + break; default: pr_warn("it shouldn't happen\n"); break; @@ -389,6 +402,19 @@ static int svc_normal_to_secure_thread(void *data) (unsigned int)res.a1, (unsigned int)res.a2); pr_debug(" res.a3=0x%016x\n", (unsigned int)res.a3); + if (pdata->command == COMMAND_RSU_STATUS) { + if (res.a0 == INTEL_SIP_SMC_RSU_ERROR) + cbdata->status = BIT(SVC_STATUS_RSU_ERROR); + else + cbdata->status = BIT(SVC_STATUS_RSU_OK); + + cbdata->kaddr1 = &res; + cbdata->kaddr2 = NULL; + cbdata->kaddr3 = NULL; + pdata->chan->scl->receive_cb(pdata->chan->scl, cbdata); + continue; + } + switch (res.a0) { case INTEL_SIP_SMC_STATUS_OK: svc_thread_recv_status_ok(pdata, cbdata, res); @@ -941,6 +967,11 @@ static int stratix10_svc_drv_probe(struct platform_device *pdev) chans[0].name = SVC_CLIENT_FPGA; spin_lock_init(&chans[0].lock); + chans[1].scl = NULL; + chans[1].ctrl = controller; + chans[1].name = SVC_CLIENT_RSU; + spin_lock_init(&chans[1].lock); + list_add_tail(&controller->node, &svc_ctrl); platform_set_drvdata(pdev, controller); diff --git a/include/linux/firmware/intel/stratix10-smc.h b/include/linux/firmware/intel/stratix10-smc.h index a109e4c..5be5dab 100644 --- a/include/linux/firmware/intel/stratix10-smc.h +++ b/include/linux/firmware/intel/stratix10-smc.h @@ -67,6 +67,12 @@ * * INTEL_SIP_SMC_FPGA_CONFIG_STATUS_ERROR: * There is error during the FPGA configuration process. + * + * INTEL_SIP_SMC_REG_ERROR: + * There is error during a read or write operation of the protected registers. + * + * INTEL_SIP_SMC_RSU_ERROR: + * There is error during a remote status update. */ #define INTEL_SIP_SMC_RETURN_UNKNOWN_FUNCTION 0xFFFFFFFF #define INTEL_SIP_SMC_STATUS_OK 0x0 @@ -74,6 +80,7 @@ #define INTEL_SIP_SMC_FPGA_CONFIG_STATUS_REJECTED 0x2 #define INTEL_SIP_SMC_FPGA_CONFIG_STATUS_ERROR 0x4 #define INTEL_SIP_SMC_REG_ERROR 0x5 +#define INTEL_SIP_SMC_RSU_ERROR 0x7 /** * Request INTEL_SIP_SMC_FPGA_CONFIG_START @@ -262,4 +269,44 @@ INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FPGA_CONFIG_COMPLETED_WRITE) #define INTEL_SIP_SMC_REG_UPDATE \ INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_REG_UPDATE) +/* + * Request INTEL_SIP_SMC_RSU_STATUS + * + * Request remote status update boot log, call is synchronous. + * + * Call register usage: + * a0 INTEL_SIP_SMC_RSU_STATUS + * a1-7 not used + * + * Return status + * a0: Current Image + * a1: Last Failing Image + * a2: Version | State + * a3: Error details | Error location + * + * Or + * + * a0: INTEL_SIP_SMC_RSU_ERROR + */ +#define INTEL_SIP_SMC_FUNCID_RSU_STATUS 11 +#define INTEL_SIP_SMC_RSU_STATUS \ + INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_RSU_STATUS) + +/* + * Request INTEL_SIP_SMC_RSU_UPDATE + * + * Request to set the offset of the bitstream to boot after reboot, call + * is synchronous. + * + * Call register usage: + * a0 INTEL_SIP_SMC_RSU_UPDATE + * a1 64bit physical address of the configuration data memory in flash + * a2-7 not used + * + * Return status + * a0 INTEL_SIP_SMC_STATUS_OK + */ +#define INTEL_SIP_SMC_FUNCID_RSU_UPDATE 12 +#define INTEL_SIP_SMC_RSU_UPDATE \ + INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_RSU_UPDATE) #endif diff --git a/include/linux/firmware/intel/stratix10-svc-client.h b/include/linux/firmware/intel/stratix10-svc-client.h index f2fda7e..e521f17 100644 --- a/include/linux/firmware/intel/stratix10-svc-client.h +++ b/include/linux/firmware/intel/stratix10-svc-client.h @@ -10,8 +10,10 @@ * Service layer driver supports client names * * fpga: for FPGA configuration + * rsu: for remote status update */ #define SVC_CLIENT_FPGA "fpga" +#define SVC_CLIENT_RSU "rsu" /** * Status of the sent command, in bit number @@ -36,6 +38,9 @@ * * SVC_COMMAND_STATUS_RECONFIG_ERROR: * Error encountered during FPGA configuration. + * + * SVC_STATUS_RSU_OK: + * Secure firmware accepts the request of remote status update (RSU). */ #define SVC_STATUS_RECONFIG_REQUEST_OK 0 #define SVC_STATUS_RECONFIG_BUFFER_SUBMITTED 1 @@ -43,7 +48,8 @@ #define SVC_STATUS_RECONFIG_COMPLETED 3 #define SVC_STATUS_RECONFIG_BUSY 4 #define SVC_STATUS_RECONFIG_ERROR 5 - +#define SVC_STATUS_RSU_OK 6 +#define SVC_STATUS_RSU_ERROR 7 /** * Flag bit for COMMAND_RECONFIG * @@ -56,9 +62,11 @@ /** * Timeout settings for service clients: * timeout value used in Stratix10 FPGA manager driver. + * timeout value used in RSU driver */ #define SVC_RECONFIG_REQUEST_TIMEOUT_MS 100 #define SVC_RECONFIG_BUFFER_TIMEOUT_MS 240 +#define SVC_RSU_REQUEST_TIMEOUT_MS 300 struct stratix10_svc_chan; @@ -81,13 +89,21 @@ struct stratix10_svc_chan; * @COMMAND_RECONFIG_STATUS: check the status of the configuration, return * status is SVC_STATUS_RECONFIG_COMPLETED, or SVC_STATUS_RECONFIG_BUSY, or * SVC_STATUS_RECONFIG_ERROR + * + * @COMMAND_RSU_STATUS: request remote system update boot log, return status + * is log data or SVC_STATUS_RSU_ERROR + * + * @COMMAND_RSU_UPDATE: set the offset of the bitstream to boot after reboot, + * return status is SVC_STATUS_RSU_OK or SVC_STATUS_RSU_ERROR */ enum stratix10_svc_command_code { COMMAND_NOOP = 0, COMMAND_RECONFIG, COMMAND_RECONFIG_DATA_SUBMIT, COMMAND_RECONFIG_DATA_CLAIM, - COMMAND_RECONFIG_STATUS + COMMAND_RECONFIG_STATUS, + COMMAND_RSU_STATUS, + COMMAND_RSU_UPDATE }; /**