firmware: zynqmp: Move crypto API's to separate file

For better maintainability move crypto related API's to
new zynqmp-crypto.c file.

Signed-off-by: Harsh Jain <h.jain@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

5 files changed, 89 insertions, 63 deletions

diff --git a/drivers/firmware/xilinx/Makefile b/drivers/firmware/xilinx/Makefile
index 70f8f02f14a3..8db0e66b6b7e 100644
--- a/drivers/firmware/xilinx/Makefile
+++ b/drivers/firmware/xilinx/Makefile
@@ -1,5 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0
 # Makefile for Xilinx firmwares
 
-obj-$(CONFIG_ZYNQMP_FIRMWARE) += zynqmp.o zynqmp-ufs.o
+obj-$(CONFIG_ZYNQMP_FIRMWARE) += zynqmp.o zynqmp-ufs.o zynqmp-crypto.o
 obj-$(CONFIG_ZYNQMP_FIRMWARE_DEBUG) += zynqmp-debug.o
diff --git a/drivers/firmware/xilinx/zynqmp-crypto.c b/drivers/firmware/xilinx/zynqmp-crypto.c
new file mode 100644
index 000000000000..ea9cac6a1052
--- /dev/null
+++ b/drivers/firmware/xilinx/zynqmp-crypto.c
@@ -0,0 +1,59 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Firmware layer for XilSecure APIs.
+ *
+ * Copyright (C) 2014-2022 Xilinx, Inc.
+ * Copyright (C) 2022-2025 Advanced Micro Devices, Inc.
+ */
+
+#include <linux/firmware/xlnx-zynqmp.h>
+#include <linux/module.h>
+
+/**
+ * zynqmp_pm_aes_engine - 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.
+ */
+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, ret_payload, 2, upper_32_bits(address),
+				  lower_32_bits(address));
+	*out = ret_payload[1];
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(zynqmp_pm_aes_engine);
+
+/**
+ * zynqmp_pm_sha_hash - Access the SHA engine to calculate the hash
+ * @address:	Address of the data/ Address of output buffer where
+ *		hash should be stored.
+ * @size:	Size of the data.
+ * @flags:
+ *		BIT(0) - for initializing csudma driver and SHA3(Here address
+ *		and size inputs can be NULL).
+ *		BIT(1) - to call Sha3_Update API which can be called multiple
+ *		times when data is not contiguous.
+ *		BIT(2) - to get final hash of the whole updated data.
+ *		Hash will be overwritten at provided address with
+ *		48 bytes.
+ *
+ * Return:	Returns status, either success or error code.
+ */
+int zynqmp_pm_sha_hash(const u64 address, const u32 size, const u32 flags)
+{
+	u32 lower_addr = lower_32_bits(address);
+	u32 upper_addr = upper_32_bits(address);
+
+	return zynqmp_pm_invoke_fn(PM_SECURE_SHA, NULL, 4, upper_addr, lower_addr, size, flags);
+}
+EXPORT_SYMBOL_GPL(zynqmp_pm_sha_hash);
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index ad811f40e059..f15db1a818dc 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -1522,30 +1522,6 @@ int zynqmp_pm_load_pdi(const u32 src, const u64 address)
 EXPORT_SYMBOL_GPL(zynqmp_pm_load_pdi);
 
 /**
- * zynqmp_pm_aes_engine - 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.
- */
-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, ret_payload, 2, upper_32_bits(address),
-				  lower_32_bits(address));
-	*out = ret_payload[1];
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(zynqmp_pm_aes_engine);
-
-/**
  * zynqmp_pm_efuse_access - Provides access to efuse memory.
  * @address:	Address of the efuse params structure
  * @out:		Returned output value
@@ -1570,31 +1546,6 @@ int zynqmp_pm_efuse_access(const u64 address, u32 *out)
 EXPORT_SYMBOL_GPL(zynqmp_pm_efuse_access);
 
 /**
- * zynqmp_pm_sha_hash - Access the SHA engine to calculate the hash
- * @address:	Address of the data/ Address of output buffer where
- *		hash should be stored.
- * @size:	Size of the data.
- * @flags:
- *	BIT(0) - for initializing csudma driver and SHA3(Here address
- *		 and size inputs can be NULL).
- *	BIT(1) - to call Sha3_Update API which can be called multiple
- *		 times when data is not contiguous.
- *	BIT(2) - to get final hash of the whole updated data.
- *		 Hash will be overwritten at provided address with
- *		 48 bytes.
- *
- * Return:	Returns status, either success or error code.
- */
-int zynqmp_pm_sha_hash(const u64 address, const u32 size, const u32 flags)
-{
-	u32 lower_addr = lower_32_bits(address);
-	u32 upper_addr = upper_32_bits(address);
-
-	return zynqmp_pm_invoke_fn(PM_SECURE_SHA, NULL, 4, upper_addr, lower_addr, size, flags);
-}
-EXPORT_SYMBOL_GPL(zynqmp_pm_sha_hash);
-
-/**
  * zynqmp_pm_register_notifier() - PM API for register a subsystem
  *                                to be notified about specific
  *                                event/error.
diff --git a/include/linux/firmware/xlnx-zynqmp-crypto.h b/include/linux/firmware/xlnx-zynqmp-crypto.h
new file mode 100644
index 000000000000..f9eb523ba6a0
--- /dev/null
+++ b/include/linux/firmware/xlnx-zynqmp-crypto.h
@@ -0,0 +1,28 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Firmware layer for XilSECURE APIs.
+ *
+ *  Copyright (C) 2014-2022 Xilinx, Inc.
+ *  Copyright (C) 2022-2025 Advanced Micro Devices, Inc.
+ */
+
+#ifndef __FIRMWARE_XLNX_ZYNQMP_CRYPTO_H__
+#define __FIRMWARE_XLNX_ZYNQMP_CRYPTO_H__
+
+#if IS_REACHABLE(CONFIG_ZYNQMP_FIRMWARE)
+int zynqmp_pm_aes_engine(const u64 address, u32 *out);
+int zynqmp_pm_sha_hash(const u64 address, const u32 size, const u32 flags);
+#else
+static inline int zynqmp_pm_aes_engine(const u64 address, u32 *out)
+{
+	return -ENODEV;
+}
+
+static inline int zynqmp_pm_sha_hash(const u64 address, const u32 size,
+				     const u32 flags)
+{
+	return -ENODEV;
+}
+#endif
+
+#endif /* __FIRMWARE_XLNX_ZYNQMP_CRYPTO_H__ */
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index 15fdbd089bbf..d70dcd462b44 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -17,6 +17,7 @@
 
 #include <linux/err.h>
 #include <linux/firmware/xlnx-zynqmp-ufs.h>
+#include <linux/firmware/xlnx-zynqmp-crypto.h>
 
 #define ZYNQMP_PM_VERSION_MAJOR	1
 #define ZYNQMP_PM_VERSION_MINOR	0
@@ -589,9 +590,7 @@ int zynqmp_pm_release_node(const u32 node);
 int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
 			      const u32 qos,
 			      const enum zynqmp_pm_request_ack ack);
-int zynqmp_pm_aes_engine(const u64 address, u32 *out);
 int zynqmp_pm_efuse_access(const u64 address, u32 *out);
-int zynqmp_pm_sha_hash(const u64 address, const u32 size, const u32 flags);
 int zynqmp_pm_fpga_load(const u64 address, const u32 size, const u32 flags);
 int zynqmp_pm_fpga_get_status(u32 *value);
 int zynqmp_pm_fpga_get_config_status(u32 *value);
@@ -772,22 +771,11 @@ static inline int zynqmp_pm_set_requirement(const u32 node,
 	return -ENODEV;
 }
 
-static inline int zynqmp_pm_aes_engine(const u64 address, u32 *out)
-{
-	return -ENODEV;
-}
-
 static inline int zynqmp_pm_efuse_access(const u64 address, u32 *out)
 {
 	return -ENODEV;
 }
 
-static inline int zynqmp_pm_sha_hash(const u64 address, const u32 size,
-				     const u32 flags)
-{
-	return -ENODEV;
-}
-
 static inline int zynqmp_pm_fpga_load(const u64 address, const u32 size,
 				      const u32 flags)
 {