mirror of
https://github.com/ARM-software/arm-trusted-firmware.git
synced 2025-04-15 00:54:22 +00:00
222f885df3
This patch adds 'bitlock_t' type and bit_lock() and bit_unlock() to support locking/release functionality based on individual bit position. These functions use atomic bit set and clear instructions which require FEAT_LSE mandatory from Armv8.1. Change-Id: I3eb0f29bbccefe6c0f69061aa701187a6364df0c Signed-off-by: AlexeiFedorov <Alexei.Fedorov@arm.com>
35 lines
673 B
C
35 lines
673 B
C
/*
|
|
* Copyright (c) 2013-2024, Arm Limited and Contributors. All rights reserved.
|
|
*
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*/
|
|
|
|
#ifndef SPINLOCK_H
|
|
#define SPINLOCK_H
|
|
|
|
#ifndef __ASSEMBLER__
|
|
|
|
#include <stdint.h>
|
|
|
|
typedef struct spinlock {
|
|
volatile uint32_t lock;
|
|
} spinlock_t;
|
|
|
|
typedef struct bitlock {
|
|
volatile uint8_t lock;
|
|
} bitlock_t;
|
|
|
|
void spin_lock(spinlock_t *lock);
|
|
void spin_unlock(spinlock_t *lock);
|
|
|
|
void bit_lock(bitlock_t *lock, uint8_t mask);
|
|
void bit_unlock(bitlock_t *lock, uint8_t mask);
|
|
|
|
#else
|
|
|
|
/* Spin lock definitions for use in assembly */
|
|
#define SPINLOCK_ASM_ALIGN 2
|
|
#define SPINLOCK_ASM_SIZE 4
|
|
|
|
#endif /* __ASSEMBLER__ */
|
|
#endif /* SPINLOCK_H */
|