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Tue, 4 May 2021 03:22:43 -0700 Envelope-to: git@xilinx.com, mdf@kernel.org, trix@redhat.com, robh+dt@kernel.org, arnd@arndb.de, gregkh@linuxfoundation.org, linus.walleij@linaro.org, zou_wei@huawei.com, linux-fpga@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, chinnikishore369@gmail.com Received: from [10.140.6.60] (port=35290 helo=xhdnavam40.xilinx.com) by smtp.xilinx.com with esmtp (Exim 4.90) (envelope-from ) id 1ldsCO-000192-RO; Tue, 04 May 2021 03:22:41 -0700 From: Nava kishore Manne To: , , , , , , , , , , , , , , , , , , , , Subject: [RFC PATCH 1/4] drivers: firmware: Add user encrypted key load API support Date: Tue, 4 May 2021 15:52:24 +0530 Message-ID: <20210504102227.15475-2-nava.manne@xilinx.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210504102227.15475-1-nava.manne@xilinx.com> References: <20210504102227.15475-1-nava.manne@xilinx.com> MIME-Version: 1.0 Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 38e6d033-e19c-4990-18ed-08d90ee69760 X-MS-TrafficTypeDiagnostic: MWHPR02MB2638: X-Microsoft-Antispam-PRVS: X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply X-MS-Oob-TLC-OOBClassifiers: OLM:1775; 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X-OriginatorOrg: xilinx.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 04 May 2021 10:22:59.3090 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 38e6d033-e19c-4990-18ed-08d90ee69760 X-MS-Exchange-CrossTenant-Id: 657af505-d5df-48d0-8300-c31994686c5c X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=657af505-d5df-48d0-8300-c31994686c5c;Ip=[149.199.62.198];Helo=[xsj-pvapexch02.xlnx.xilinx.com] X-MS-Exchange-CrossTenant-AuthSource: BN1NAM02FT040.eop-nam02.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MWHPR02MB2638 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch adds user encrypted key load API to support User key encrypted images loading use cases from Linux. Signed-off-by: Nava kishore Manne --- drivers/firmware/xilinx/zynqmp.c | 17 +++++++++++++++++ include/linux/firmware/xlnx-zynqmp.h | 7 +++++++ 2 files changed, 24 insertions(+) diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c index 15b138326ecc..2fa5687a75f8 100644 --- a/drivers/firmware/xilinx/zynqmp.c +++ b/drivers/firmware/xilinx/zynqmp.c @@ -787,6 +787,23 @@ int zynqmp_pm_fpga_load(const u64 address, const u32 size, const u32 flags) } EXPORT_SYMBOL_GPL(zynqmp_pm_fpga_load); +/** + * zynqmp_pm_fpga_key_load - Perform to load the bitstream encrypted key + * @address: Address to write + * @size: encrypted key size + * + * This function provides access to pmufw. To transfer + * the required encrypted key. + * + * Return: Returns status, either success or error+reason + */ +int zynqmp_pm_fpga_enc_key_load(const u64 address, const u32 size) +{ + return zynqmp_pm_invoke_fn(PM_ENC_KEY_LOAD, lower_32_bits(address), + upper_32_bits(address), size, 0, NULL); +} +EXPORT_SYMBOL_GPL(zynqmp_pm_fpga_enc_key_load); + /** * zynqmp_pm_fpga_get_status - Read value from PCAP status register * @value: Value to read diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h index 9d1a5c175065..7aa9ad40ff53 100644 --- a/include/linux/firmware/xlnx-zynqmp.h +++ b/include/linux/firmware/xlnx-zynqmp.h @@ -91,6 +91,7 @@ enum pm_api_id { PM_CLOCK_GETPARENT = 44, PM_SECURE_AES = 47, PM_FEATURE_CHECK = 63, + PM_ENC_KEY_LOAD = 64, }; /* PMU-FW return status codes */ @@ -411,6 +412,7 @@ int zynqmp_pm_pinctrl_get_config(const u32 pin, const u32 param, u32 *value); int zynqmp_pm_pinctrl_set_config(const u32 pin, const u32 param, u32 value); +int zynqmp_pm_fpga_enc_key_load(const u64 address, const u32 size); #else static inline int zynqmp_pm_get_api_version(u32 *version) { @@ -622,6 +624,11 @@ static inline int zynqmp_pm_pinctrl_set_config(const u32 pin, const u32 param, { return -ENODEV; } + +static inline int zynqmp_pm_fpga_enc_key_load(const u64 address, const u32 size) +{ + return -ENODEV; +} #endif #endif /* __FIRMWARE_ZYNQMP_H__ */ -- 2.17.1