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/*
* Copyright (c) 2018, Arm Limited. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
/*
* Definitions related to the Trusted OS Service as per the SMC Calling
* Convention.
*/
#ifndef __TRUSTED_OS_H__
#define __TRUSTED_OS_H__
#include <uuid.h>
/* Trusted OS Function IDs that fall under Trusted OS call range */
#define SMC_TOS_CALL_COUNT 0xbf00ff00
#define SMC_TOS_UID 0xbf00ff01
/* 0xbf00ff02 is reserved */
#define SMC_TOS_REVISION 0xbf00ff03
/*
* Detect whether a Trusted OS is present in the software stack.
* This is implemented using the Trusted OS UID SMC call.
*
* Return 1 if a Trusted OS is detected, else 0. Additionally, the caller may
* get the UUID of the Trusted OS if he passes a non-null 'tos_uuid' pointer.
*/
unsigned int is_trusted_os_present(uuid_t *tos_uuid);
#endif /* __TRUSTED_OS_H__ */
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