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Tue, 21 Nov 2023 23:44:10 -0600 From: Nava kishore Manne To: , , , , , , , , , , , , , , , , , , , Subject: [RFC PATCH 1/3] dt-bindings: fpga: Add support for user-key encrypted bitstream loading Date: Wed, 22 Nov 2023 11:14:02 +0530 Message-ID: <20231122054404.3764288-2-nava.kishore.manne@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231122054404.3764288-1-nava.kishore.manne@amd.com> References: <20231122054404.3764288-1-nava.kishore.manne@amd.com> MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL02EPF0001A0FE:EE_|CY5PR12MB6250:EE_ X-MS-Office365-Filtering-Correlation-Id: 9bec07ce-8717-4782-5ce7-08dbeb1e0db1 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230031)(4636009)(39860400002)(376002)(136003)(396003)(346002)(230922051799003)(451199024)(82310400011)(186009)(64100799003)(1800799012)(46966006)(36840700001)(40470700004)(7416002)(86362001)(5660300002)(2906002)(8676002)(8936002)(110136005)(70206006)(316002)(70586007)(40460700003)(36756003)(921008)(41300700001)(103116003)(336012)(26005)(40480700001)(16526019)(426003)(82740400003)(1076003)(2616005)(83380400001)(6666004)(81166007)(36860700001)(356005)(47076005)(478600001)(2101003)(36900700001)(83996005);DIR:OUT;SFP:1101; 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Tue, 21 Nov 2023 21:44:28 -0800 (PST) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1783241779811506193 X-GMAIL-MSGID: 1783241779811506193 Adds ‘encrypted-key-name’ property to support user-key encrypted bitstream loading use case. Signed-off-by: Nava kishore Manne --- .../devicetree/bindings/fpga/fpga-region.txt | 32 +++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/Documentation/devicetree/bindings/fpga/fpga-region.txt b/Documentation/devicetree/bindings/fpga/fpga-region.txt index 528df8a0e6d8..309334558b3f 100644 --- a/Documentation/devicetree/bindings/fpga/fpga-region.txt +++ b/Documentation/devicetree/bindings/fpga/fpga-region.txt @@ -177,6 +177,9 @@ Optional properties: it indicates that the FPGA has already been programmed with this image. If this property is in an overlay targeting an FPGA region, it is a request to program the FPGA with that image. +- encrypted-key-name : should contain the name of an encrypted key file located + on the firmware search path. It will be used to decrypt the FPGA image + file with user-key. - fpga-bridges : should contain a list of phandles to FPGA Bridges that must be controlled during FPGA programming along with the parent FPGA bridge. This property is optional if the FPGA Manager handles the bridges. @@ -459,6 +462,35 @@ programming is the FPGA based bridge of fpga_region1. }; }; +Device Tree Example: Configure/Reconfigure Encrypted Image With User Key +======================================================================== + +Users can encrypt FPGA configuration Images with their own key. While decrypting +the configuration Image the user needs to provide the same key. +"encrypted-key-name" Specifies the name of the FPGA image encrypted key file on +the firmware search path. The search path is described in the firmware class +documentation. + +/dts-v1/; +/plugin/; + +&fpga_region0 { + #address-cells = <1>; + #size-cells = <1>; + + firmware-name = "soc_image2.rbf"; + encrypted-key-name = "key.nky"; + + gpio@10040 { + compatible = "altr,pio-1.0"; + reg = <0x10040 0x20>; + clocks = <0x2>; + altr,ngpio = <0x4>; + #gpio-cells = <0x2>; + gpio-controller; + }; +}; + Constraints =========== From patchwork Wed Nov 22 05:44:03 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Manne, Nava kishore" X-Patchwork-Id: 168106 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:612c:2b07:b0:403:3b70:6f57 with SMTP id io7csp1114012vqb; Tue, 21 Nov 2023 21:44:52 -0800 (PST) X-Google-Smtp-Source: AGHT+IETvPFWF+wGTmPGo1rxkVq8kpLJGOUhZZbRGBwR98sfh9dgauztYKDy+/SbgcRNulM6Wu2u X-Received: by 2002:a81:778a:0:b0:5c9:dbbc:b844 with SMTP id s132-20020a81778a000000b005c9dbbcb844mr1150975ywc.7.1700631892050; Tue, 21 Nov 2023 21:44:52 -0800 (PST) ARC-Seal: i=2; a=rsa-sha256; t=1700631892; cv=pass; d=google.com; s=arc-20160816; b=xgBOi6mF2pBY/XJWHbA2nf/0Yw8+B2PBObT7WZiCf0spjqWgE9y/6V6IOvn9MDKf+J BoOO/rQO62iE6k/vniYIq+3ZESUxbsnyuxGnkApVLiVQ9SyJZPGuaDBUO4bcN6tSewCN oz809yf5h4SNInKJpOsE2GL3zfosMIvLgvkj625SyaldxnnpyNvmmM5MHtH9JUmy4PEu Aoz/gNKTJ7pe1zFWXTytHSWA2jzZ+N54PLhtjG9Z+kUp4rRPHTkAjoH56ZlknQpMCx96 goTZxm73z1XGQGj/WWPAgg6MUXwuCUW6Ke9AcGJaw7LGtYOLLUFVBqLy330mLWUwunS+ 21nQ== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:to:from :dkim-signature; bh=MGFLKM4m7ZOhTuGsMykKETOSn3f9gwPUwUfSCjeIHvU=; fh=5bqgl+4tgA7Vt+pTddkEmoLZB0aah352OndmOQFBWKA=; b=wmJYiKA5aGGXb0cRhglhMj2fx+UxdZgJDD5VX4apgcr4Mn2yXKx/HowEvoyF5Jh4PW xgfr5BhXoto9cU4AusA1vydS+c5Cn3DVm6nlf3517lQI0mJmYIJEoeFUMobiVcAjfvro ObAxkqzTZzkEAvhRFGHd0jr7RENLkd7u3wBega+ywhAInoK0tsyj2STr8DNWvKkBrZIJ 3MFvtoFC32IttQRJQhdLU9S7j96e5pb2Pd2p7A4zjl0EnzKZl5f7NRPTm3XBn8WFtMw3 s5eG3wfMEw5yQu+yE8mjM0lKt/HTPzSqHlXF5befg0oVJsUtpYpTOSGUmXT9k3V7deUp 0i1w== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@amd.com header.s=selector1 header.b=uZeuSvxY; arc=pass (i=1 spf=pass spfdomain=amd.com dmarc=pass fromdomain=amd.com); spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:2 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=amd.com Received: from agentk.vger.email (agentk.vger.email. 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Tue, 21 Nov 2023 23:44:13 -0600 From: Nava kishore Manne To: , , , , , , , , , , , , , , , , , , , Subject: [RFC PATCH 2/3] drivers: fpga: Add user-key encrypted FPGA Image loading support Date: Wed, 22 Nov 2023 11:14:03 +0530 Message-ID: <20231122054404.3764288-3-nava.kishore.manne@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231122054404.3764288-1-nava.kishore.manne@amd.com> References: <20231122054404.3764288-1-nava.kishore.manne@amd.com> MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL02EPF0001A100:EE_|SJ2PR12MB8036:EE_ X-MS-Office365-Filtering-Correlation-Id: 6da67252-d6c9-4f13-aded-08dbeb1e0fa2 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230031)(4636009)(346002)(39860400002)(396003)(376002)(136003)(230273577357003)(230173577357003)(230922051799003)(82310400011)(451199024)(64100799003)(1800799012)(186009)(46966006)(36840700001)(40470700004)(356005)(83380400001)(40480700001)(47076005)(478600001)(81166007)(36860700001)(26005)(6666004)(16526019)(1076003)(426003)(82740400003)(336012)(2616005)(316002)(70206006)(5660300002)(70586007)(110136005)(86362001)(7416002)(2906002)(921008)(103116003)(41300700001)(8936002)(8676002)(40460700003)(36756003)(83996005)(2101003)(36900700001);DIR:OUT;SFP:1101; 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Tue, 21 Nov 2023 21:44:49 -0800 (PST) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1783241787156119249 X-GMAIL-MSGID: 1783241787156119249 Adds parse_aes_key() callback to fpga_manager_ops, It will read the AES key from firmware to support user-key encrypted bitstream loading. Signed-off-by: Nava kishore Manne --- drivers/fpga/fpga-mgr.c | 86 ++++++++++++++++++++++++++++++++--- drivers/fpga/of-fpga-region.c | 10 ++++ include/linux/fpga/fpga-mgr.h | 8 ++++ 3 files changed, 97 insertions(+), 7 deletions(-) diff --git a/drivers/fpga/fpga-mgr.c b/drivers/fpga/fpga-mgr.c index 06651389c592..c8e20e8f4b6f 100644 --- a/drivers/fpga/fpga-mgr.c +++ b/drivers/fpga/fpga-mgr.c @@ -83,6 +83,15 @@ static inline int fpga_mgr_parse_header(struct fpga_manager *mgr, return 0; } +static inline int fpga_mgr_parse_aes_key(struct fpga_manager *mgr, + struct fpga_image_info *info, + const char *buf, size_t count) +{ + if (mgr->mops->parse_aes_key) + return mgr->mops->parse_aes_key(mgr, info, buf, count); + return 0; +} + static inline int fpga_mgr_write_init(struct fpga_manager *mgr, struct fpga_image_info *info, const char *buf, size_t count) @@ -559,6 +568,43 @@ static int fpga_mgr_firmware_load(struct fpga_manager *mgr, return ret; } +/** + * fpga_mgr_get_aes_key - request aes key form the firmware class + * @mgr: fpga manager + * @info: fpga image specific information + * @image_name: name of image file on the aes key firmware search path + * + * + * Request an aes key image using the firmware class, then Step the low level + * fpga manager through the device-specific steps. Update the state before each + * step to provide info on what step failed if there is a failure. + * + * Return: 0 on success, negative error code otherwise. + */ +static int fpga_mgr_get_aes_key(struct fpga_manager *mgr, + struct fpga_image_info *info, + const char *image_name, + const struct firmware *fw) +{ + struct device *dev = &mgr->dev; + int ret; + + dev_info(dev, "Get Aes-key: %s to %s\n", image_name, mgr->name); + + mgr->state = FPGA_MGR_STATE_FIRMWARE_REQ; + + ret = request_firmware(&fw, image_name, dev); + if (ret) { + mgr->state = FPGA_MGR_STATE_FIRMWARE_REQ_ERR; + dev_err(dev, "Error requesting firmware %s\n", image_name); + return ret; + } + + ret = fpga_mgr_parse_aes_key(mgr, info, fw->data, fw->size); + + return ret; +} + /** * fpga_mgr_load - load FPGA from scatter/gather table, buffer, or firmware * @mgr: fpga manager @@ -571,15 +617,41 @@ static int fpga_mgr_firmware_load(struct fpga_manager *mgr, */ int fpga_mgr_load(struct fpga_manager *mgr, struct fpga_image_info *info) { + const struct firmware *fw; + int ret; + info->header_size = mgr->mops->initial_header_size; - if (info->sgt) - return fpga_mgr_buf_load_sg(mgr, info, info->sgt); - if (info->buf && info->count) - return fpga_mgr_buf_load(mgr, info, info->buf, info->count); - if (info->firmware_name) - return fpga_mgr_firmware_load(mgr, info, info->firmware_name); - return -EINVAL; + if (info->encrypted_key_name) { + ret = fpga_mgr_get_aes_key(mgr, info, + info->encrypted_key_name, fw); + if (ret) + return ret; + + info->flags |= FPGA_MGR_USRKEY_ENCRYPTED_BITSTREAM; + } + + if (info->sgt) { + ret = fpga_mgr_buf_load_sg(mgr, info, info->sgt); + if (ret) + goto free_fw; + } else if (info->buf && info->count) { + ret = fpga_mgr_buf_load(mgr, info, info->buf, info->count); + if (ret) + goto free_fw; + } else if (info->firmware_name) { + ret = fpga_mgr_firmware_load(mgr, info, info->firmware_name); + if (ret) + goto free_fw; + } else { + ret = -EINVAL; + } + +free_fw: + if (info->encrypted_key_name) + release_firmware(fw); + + return ret; } EXPORT_SYMBOL_GPL(fpga_mgr_load); diff --git a/drivers/fpga/of-fpga-region.c b/drivers/fpga/of-fpga-region.c index a6affd83f275..e9ddece4b82d 100644 --- a/drivers/fpga/of-fpga-region.c +++ b/drivers/fpga/of-fpga-region.c @@ -196,6 +196,7 @@ of_fpga_region_parse_ov(struct fpga_region *region, struct device_node *overlay) { struct device *dev = ®ion->dev; + const char *encrypted_key_name; struct fpga_image_info *info; const char *firmware_name; int ret; @@ -238,6 +239,15 @@ of_fpga_region_parse_ov(struct fpga_region *region, return ERR_PTR(-ENOMEM); } + if (!of_property_read_string(overlay, "encrypted-key-name", + &encrypted_key_name)) { + info->encrypted_key_name = devm_kstrdup(dev, + encrypted_key_name, + GFP_KERNEL); + if (!info->encrypted_key_name) + return ERR_PTR(-ENOMEM); + } + of_property_read_u32(overlay, "region-unfreeze-timeout-us", &info->enable_timeout_us); diff --git a/include/linux/fpga/fpga-mgr.h b/include/linux/fpga/fpga-mgr.h index 54f63459efd6..303264d89922 100644 --- a/include/linux/fpga/fpga-mgr.h +++ b/include/linux/fpga/fpga-mgr.h @@ -71,12 +71,15 @@ enum fpga_mgr_states { * %FPGA_MGR_BITSTREAM_LSB_FIRST: SPI bitstream bit order is LSB first * * %FPGA_MGR_COMPRESSED_BITSTREAM: FPGA bitstream is compressed + * + * %FPGA_MGR_USRKEY_ENCRYPTED_BITSTREAM: indicates bitstream is encrypted with user-key */ #define FPGA_MGR_PARTIAL_RECONFIG BIT(0) #define FPGA_MGR_EXTERNAL_CONFIG BIT(1) #define FPGA_MGR_ENCRYPTED_BITSTREAM BIT(2) #define FPGA_MGR_BITSTREAM_LSB_FIRST BIT(3) #define FPGA_MGR_COMPRESSED_BITSTREAM BIT(4) +#define FPGA_MGR_USRKEY_ENCRYPTED_BITSTREAM BIT(5) /** * struct fpga_image_info - information specific to an FPGA image @@ -86,6 +89,7 @@ enum fpga_mgr_states { * @config_complete_timeout_us: maximum time for FPGA to switch to operating * status in the write_complete op. * @firmware_name: name of FPGA image firmware file + * @encrypted_key_name: name of the FPGA image encrypted user-key file * @sgt: scatter/gather table containing FPGA image * @buf: contiguous buffer containing FPGA image * @count: size of buf @@ -102,6 +106,7 @@ struct fpga_image_info { u32 disable_timeout_us; u32 config_complete_timeout_us; char *firmware_name; + char *encrypted_key_name; struct sg_table *sgt; const char *buf; size_t count; @@ -172,6 +177,9 @@ struct fpga_manager_ops { bool skip_header; enum fpga_mgr_states (*state)(struct fpga_manager *mgr); u64 (*status)(struct fpga_manager *mgr); + int (*parse_aes_key)(struct fpga_manager *mgr, + struct fpga_image_info *info, + const char *buf, size_t count); int (*parse_header)(struct fpga_manager *mgr, struct fpga_image_info *info, const char *buf, size_t count); From patchwork Wed Nov 22 05:44:04 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Manne, Nava kishore" X-Patchwork-Id: 168105 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:612c:2b07:b0:403:3b70:6f57 with SMTP id io7csp1113996vqb; Tue, 21 Nov 2023 21:44:47 -0800 (PST) X-Google-Smtp-Source: AGHT+IEiZEpSUPtQ8UqChpbgNxhnGEzqOwbsYOHkz+RQJmm9grZEQPwMJtd+3aUlYZKyvNFbp9Kg X-Received: by 2002:a17:90b:1d92:b0:27d:5964:4ee6 with SMTP id pf18-20020a17090b1d9200b0027d59644ee6mr1507743pjb.2.1700631887549; 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Tue, 21 Nov 2023 21:44:40 -0800 (PST) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1783241781937041840 X-GMAIL-MSGID: 1783241781937041840 Adds support for both Device-key and user-key encrypted bitstream loading to the Xilinx ZynqMP Soc. Signed-off-by: Nava kishore Manne --- drivers/fpga/zynqmp-fpga.c | 53 ++++++++++++++++++++++++++-- include/linux/firmware/xlnx-zynqmp.h | 2 ++ 2 files changed, 52 insertions(+), 3 deletions(-) diff --git a/drivers/fpga/zynqmp-fpga.c b/drivers/fpga/zynqmp-fpga.c index f3434e2c487b..8b0e4b8b5d99 100644 --- a/drivers/fpga/zynqmp-fpga.c +++ b/drivers/fpga/zynqmp-fpga.c @@ -15,16 +15,44 @@ /* Constant Definitions */ #define IXR_FPGA_DONE_MASK BIT(3) +#define ENCRYPTED_KEY_LEN 64 +#define AES_MATCH_STR_LEN 5 + /** * struct zynqmp_fpga_priv - Private data structure + * @aes_key: Pointer Aes key buffer * @dev: Device data structure * @flags: flags which is used to identify the bitfile type */ struct zynqmp_fpga_priv { + const char *aes_key; struct device *dev; u32 flags; }; +static int zynqmp_fpga_parse_aes_key(struct fpga_manager *mgr, + struct fpga_image_info *info, + const char *buf, size_t size) +{ + struct zynqmp_fpga_priv *priv = mgr->priv; + const char *str = "Key 0"; + + for (int i = 0; i < size; i++) { + if (!strncmp(str, &buf[i], AES_MATCH_STR_LEN)) { + buf += AES_MATCH_STR_LEN + 1; + while (buf[i] == ' ') + i++; + if (size - i < ENCRYPTED_KEY_LEN) + return -EINVAL; + priv->aes_key = &buf[i]; + + return 0; + } + } + + return -EINVAL; +} + static int zynqmp_fpga_ops_write_init(struct fpga_manager *mgr, struct fpga_image_info *info, const char *buf, size_t size) @@ -43,25 +71,43 @@ static int zynqmp_fpga_ops_write(struct fpga_manager *mgr, struct zynqmp_fpga_priv *priv; dma_addr_t dma_addr; u32 eemi_flags = 0; + size_t dma_size; char *kbuf; int ret; priv = mgr->priv; - kbuf = dma_alloc_coherent(priv->dev, size, &dma_addr, GFP_KERNEL); + if (priv->flags & FPGA_MGR_USRKEY_ENCRYPTED_BITSTREAM) + dma_size = size + ENCRYPTED_KEY_LEN; + else + dma_size = size; + + kbuf = dma_alloc_coherent(priv->dev, dma_size, &dma_addr, GFP_KERNEL); if (!kbuf) return -ENOMEM; memcpy(kbuf, buf, size); + if (priv->flags & FPGA_MGR_USRKEY_ENCRYPTED_BITSTREAM) { + eemi_flags |= XILINX_ZYNQMP_PM_FPGA_ENCRYPTION_USERKEY; + memcpy(kbuf + size, priv->aes_key, ENCRYPTED_KEY_LEN); + } + wmb(); /* ensure all writes are done before initiate FW call */ if (priv->flags & FPGA_MGR_PARTIAL_RECONFIG) eemi_flags |= XILINX_ZYNQMP_PM_FPGA_PARTIAL; - ret = zynqmp_pm_fpga_load(dma_addr, size, eemi_flags); + if (priv->flags & FPGA_MGR_ENCRYPTED_BITSTREAM) + eemi_flags |= XILINX_ZYNQMP_PM_FPGA_ENCRYPTION_DEVKEY; + + if (priv->flags & FPGA_MGR_USRKEY_ENCRYPTED_BITSTREAM) + ret = zynqmp_pm_fpga_load(dma_addr, dma_addr + size, + eemi_flags); + else + ret = zynqmp_pm_fpga_load(dma_addr, size, eemi_flags); - dma_free_coherent(priv->dev, size, kbuf, dma_addr); + dma_free_coherent(priv->dev, dma_size, kbuf, dma_addr); return ret; } @@ -99,6 +145,7 @@ ATTRIBUTE_GROUPS(zynqmp_fpga); static const struct fpga_manager_ops zynqmp_fpga_ops = { .state = zynqmp_fpga_ops_state, + .parse_aes_key = zynqmp_fpga_parse_aes_key, .write_init = zynqmp_fpga_ops_write_init, .write = zynqmp_fpga_ops_write, }; diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h index d1ea3898564c..e88f24870a77 100644 --- a/include/linux/firmware/xlnx-zynqmp.h +++ b/include/linux/firmware/xlnx-zynqmp.h @@ -83,6 +83,8 @@ */ #define XILINX_ZYNQMP_PM_FPGA_FULL 0x0U #define XILINX_ZYNQMP_PM_FPGA_PARTIAL BIT(0) +#define XILINX_ZYNQMP_PM_FPGA_ENCRYPTION_USERKEY BIT(3) +#define XILINX_ZYNQMP_PM_FPGA_ENCRYPTION_DEVKEY BIT(4) /* FPGA Status Reg */ #define XILINX_ZYNQMP_PM_FPGA_CONFIG_STAT_OFFSET 7U