Commit 465d7831 authored by Harsh Jain's avatar Harsh Jain Committed by Herbert Xu
Browse files

firmware: zynqmp: Add helper API to self discovery the device 



Add API to get SoC version and family info.

Signed-off-by: default avatarHarsh Jain <h.jain@amd.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent c7a768f5

drivers/firmware/xilinx/zynqmp-crypto.c

+31 −0
Original line number Diff line number Diff line
@@ -57,3 +57,34 @@ int zynqmp_pm_sha_hash(const u64 address, const u32 size, const u32 flags) 
	return zynqmp_pm_invoke_fn(PM_SECURE_SHA, NULL, 4, upper_addr, lower_addr, size, flags);

}

EXPORT_SYMBOL_GPL(zynqmp_pm_sha_hash);



/**

 * xlnx_get_crypto_dev_data() - Get crypto dev data of platform

 * @feature_map:       List of available feature map of all platform

 *

 * Return: Returns crypto dev data, either address crypto dev or ERR PTR

 */

void *xlnx_get_crypto_dev_data(struct xlnx_feature *feature_map)

{

	struct xlnx_feature *feature;

	u32 pm_family_code;

	int ret;



	/* Get the Family code and sub family code of platform */

	ret = zynqmp_pm_get_family_info(&pm_family_code);

	if (ret < 0)

		return ERR_PTR(ret);



	feature = feature_map;

	for (; feature->family; feature++) {

		if (feature->family == pm_family_code) {

			ret = zynqmp_pm_feature(feature->feature_id);

			if (ret < 0)

				return ERR_PTR(ret);



			return feature->data;

		}

	}

	return ERR_PTR(-ENODEV);

}

EXPORT_SYMBOL_GPL(xlnx_get_crypto_dev_data);

include/linux/firmware/xlnx-zynqmp-crypto.h

+19 −0
Original line number Diff line number Diff line
@@ -9,9 +9,23 @@ 
#ifndef __FIRMWARE_XLNX_ZYNQMP_CRYPTO_H__

#define __FIRMWARE_XLNX_ZYNQMP_CRYPTO_H__



/**

 * struct xlnx_feature - Feature data

 * @family:	Family code of platform

 * @subfamily:	Subfamily code of platform

 * @feature_id:	Feature id of module

 * @data:	Collection of all supported platform data

 */

struct xlnx_feature {

	u32 family;

	u32 feature_id;

	void *data;

};



#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);

void *xlnx_get_crypto_dev_data(struct xlnx_feature *feature_map);

#else

static inline int zynqmp_pm_aes_engine(const u64 address, u32 *out)

{
@@ -23,6 +37,11 @@ static inline int zynqmp_pm_sha_hash(const u64 address, const u32 size, 
{

	return -ENODEV;

}



static inline void *xlnx_get_crypto_dev_data(struct xlnx_feature *feature_map)

{

	return ERR_PTR(-ENODEV);

}

#endif



#endif /* __FIRMWARE_XLNX_ZYNQMP_CRYPTO_H__ */