From: Kalyani Akula <kalyani.akula@xilinx.com>
To: linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: git <git@xilinx.com>, Harsh Jain <harshj@xilinx.com>,
Sarat Chand Savitala <saratcha@xilinx.com>,
Mohan <mohand@xilinx.com>, Kalyani Akul <kalyania@xilinx.com>,
Kalyani Akula <kalyani.akula@xilinx.com>
Subject: [PATCH V4 3/4] firmware: xilinx: Add ZynqMP aes API for AES functionality
Date: Wed, 20 Nov 2019 13:14:01 +0530 [thread overview]
Message-ID: <1574235842-7930-4-git-send-email-kalyani.akula@xilinx.com> (raw)
In-Reply-To: <1574235842-7930-1-git-send-email-kalyani.akula@xilinx.com>
Add ZynqMP firmware AES API to perform encryption/decryption of given data.
Signed-off-by: Kalyani Akula <kalyani.akula@xilinx.com>
---
drivers/firmware/xilinx/zynqmp.c | 23 +++++++++++++++++++++++
include/linux/firmware/xlnx-zynqmp.h | 2 ++
2 files changed, 25 insertions(+)
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index fd3d837..7ddf38e 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -664,6 +664,28 @@ static int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
qos, ack, NULL);
}
+/**
+ * zynqmp_pm_aes - Access AES hardware to encrypt/decrypt the data using
+ * AES-GCM core.
+ * @address: Address of the AesParams structure.
+ * @out: Returned output value
+ *
+ * Return: Returns status, either success or error code.
+ */
+static int zynqmp_pm_aes_engine(const u64 address, u32 *out)
+{
+ u32 ret_payload[PAYLOAD_ARG_CNT];
+ int ret;
+
+ if (!out)
+ return -EINVAL;
+
+ ret = zynqmp_pm_invoke_fn(PM_SECURE_AES, upper_32_bits(address),
+ lower_32_bits(address),
+ 0, 0, ret_payload);
+ *out = ret_payload[1];
+ return ret;
+}
static const struct zynqmp_eemi_ops eemi_ops = {
.get_api_version = zynqmp_pm_get_api_version,
.get_chipid = zynqmp_pm_get_chipid,
@@ -687,6 +709,7 @@ static int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
.set_requirement = zynqmp_pm_set_requirement,
.fpga_load = zynqmp_pm_fpga_load,
.fpga_get_status = zynqmp_pm_fpga_get_status,
+ .aes = zynqmp_pm_aes_engine,
};
/**
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index 778abbb..508edd7 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -77,6 +77,7 @@ enum pm_api_id {
PM_CLOCK_GETRATE,
PM_CLOCK_SETPARENT,
PM_CLOCK_GETPARENT,
+ PM_SECURE_AES = 47,
};
/* PMU-FW return status codes */
@@ -294,6 +295,7 @@ struct zynqmp_eemi_ops {
const u32 capabilities,
const u32 qos,
const enum zynqmp_pm_request_ack ack);
+ int (*aes)(const u64 address, u32 *out);
};
int zynqmp_pm_invoke_fn(u32 pm_api_id, u32 arg0, u32 arg1,
--
1.9.5
next prev parent reply other threads:[~2019-11-20 7:44 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-20 7:43 [PATCH V4 0/4] Add Xilinx's ZynqMP AES-GCM driver support Kalyani Akula
2019-11-20 7:43 ` [PATCH V4 1/4] dt-bindings: crypto: Add bindings for ZynqMP AES driver Kalyani Akula
2020-01-21 9:11 ` Michal Simek
2019-11-20 7:44 ` [PATCH V4 2/4] ARM64: zynqmp: Add Xilinix AES node Kalyani Akula
2020-01-21 9:13 ` Michal Simek
2019-11-20 7:44 ` Kalyani Akula [this message]
2020-01-21 9:15 ` [PATCH V4 3/4] firmware: xilinx: Add ZynqMP aes API for AES functionality Michal Simek
2019-11-20 7:44 ` [PATCH V4 4/4] crypto: Add Xilinx AES driver Kalyani Akula
2020-01-21 9:23 ` Michal Simek
2020-01-20 6:59 ` [PATCH V4 0/4] Add Xilinx's ZynqMP AES-GCM driver support Kalyani Akula
2020-01-20 7:55 ` Herbert Xu
2020-01-21 9:26 ` Michal Simek
2020-01-22 5:51 ` Herbert Xu
2020-01-22 6:59 ` Michal Simek
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