f651b52527
to call into the firmware in a similar way to the existing PSCI, and used PSCI to detect when SMCCC is enabled. There is a function ID space we can use. Currently we only support 3 functions in the ARM Architecture Calls region, however it is expected we will expend these in the future. Sponsored by: DARPA, AFRL
64 lines
2.4 KiB
C
64 lines
2.4 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*
|
|
* Copyright (c) 2018 Andrew Turner
|
|
*
|
|
* This software was developed by SRI International and the University of
|
|
* Cambridge Computer Laboratory under DARPA/AFRL contract FA8750-10-C-0237
|
|
* ("CTSRD"), as part of the DARPA CRASH research programme.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _PSCI_SMCCC_H_
|
|
#define _PSCI_SMCCC_H_
|
|
|
|
#define SMCCC_VERSION_MAJOR(ver) (((ver) >> 16) & 0x7fff)
|
|
#define SMCCC_VERSION_MINOR(ver) ((ver) & 0xffff)
|
|
|
|
#define SMCCC_FUNC_ID(type, call_conv, range, func) \
|
|
(((type) << 31) | \
|
|
((call_conv) << 30) | \
|
|
(((range) & 0x3f) << 24) | \
|
|
((func) & 0xffff))
|
|
|
|
#define SMCCC_YIELDING_CALL 0
|
|
#define SMCCC_FAST_CALL 1
|
|
|
|
#define SMCCC_32BIT_CALL 0
|
|
#define SMCCC_64BIT_CALL 1
|
|
|
|
#define SMCCC_VERSION \
|
|
SMCCC_FUNC_ID(SMCCC_FAST_CALL, SMCCC_64BIT_CALL, 0, 0)
|
|
#define SMCCC_ARCH_FEATURES \
|
|
SMCCC_FUNC_ID(SMCCC_FAST_CALL, SMCCC_64BIT_CALL, 0, 1)
|
|
#define SMCCC_ARCH_WORKAROUND_1 \
|
|
SMCCC_FUNC_ID(SMCCC_FAST_CALL, SMCCC_64BIT_CALL, 0, 0x8000)
|
|
|
|
int32_t smccc_arch_features(uint32_t);
|
|
int smccc_arch_workaround_1(void);
|
|
|
|
|
|
#endif /* _PSCI_SMCCC_H_ */
|