plat/mediatek/common/mtk_sip_svc.h

/*
 * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * Neither the name of ARM nor the names of its contributors may be used
 * to endorse or promote products derived from this software without specific
 * prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
#ifndef __PLAT_SIP_SVC_H__
#define __PLAT_SIP_SVC_H__

#include <stdint.h>

/* SMC function IDs for SiP Service queries */
#define SIP_SVC_CALL_COUNT		0x8200ff00
#define SIP_SVC_UID			0x8200ff01
/*					0x8200ff02 is reserved */
#define SIP_SVC_VERSION			0x8200ff03

/* Mediatek SiP Service Calls version numbers */
#define MTK_SIP_SVC_VERSION_MAJOR	0x0
#define MTK_SIP_SVC_VERSION_MINOR	0x1

#define SMC_AARCH64_BIT		0x40000000

/* Number of Mediatek SiP Calls implemented */
#define MTK_COMMON_SIP_NUM_CALLS	4

/* Mediatek SiP Service Calls function IDs */
#define MTK_SIP_SET_AUTHORIZED_SECURE_REG	0x82000001

/* For MTK SMC from Secure OS */
/* 0x82000000 - 0x820000FF & 0xC2000000 - 0xC20000FF */
#define MTK_SIP_KERNEL_BOOT_AARCH32		0x82000200
#define MTK_SIP_KERNEL_BOOT_AARCH64		0xC2000200

/* Mediatek SiP Calls error code */
enum {
	MTK_SIP_E_SUCCESS = 0,
	MTK_SIP_E_INVALID_PARAM = -1,
	MTK_SIP_E_NOT_SUPPORTED = -2,
	MTK_SIP_E_INVALID_RANGE = -3,
	MTK_SIP_E_PERMISSION_DENY = -4,
	MTK_SIP_E_LOCK_FAIL = -5
};

/*
 * This function should be implemented in Mediatek SOC directory. It fullfills
 * MTK_SIP_SET_AUTHORIZED_SECURE_REG SiP call by checking the sreg with the
 * predefined secure register list, if a match was found, set val to sreg.
 *
 * Return MTK_SIP_E_SUCCESS on success, and MTK_SIP_E_INVALID_PARAM on failure.
 */
uint64_t mt_sip_set_authorized_sreg(uint32_t sreg, uint32_t val);

#endif /* __PLAT_SIP_SVC_H__ */