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/*
* Copyright (c) 2017 Richard Braun.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _ARM_CPU_H
#define _ARM_CPU_H
#include <limits.h>
/*
* L1 cache line size.
*
* XXX Use this value until processor selection is available.
*/
#define CPU_L1_SIZE 32
/*
* Data alignment, normally the word size.
*/
#define CPU_DATA_ALIGN (LONG_BIT / 8)
#ifndef __ASSEMBLER__
#include <stdbool.h>
#include <stdnoreturn.h>
#include <kern/init.h>
struct cpu {
};
static __always_inline void
cpu_intr_enable(void)
{
}
static __always_inline void
cpu_intr_disable(void)
{
}
static __always_inline void
cpu_intr_restore(unsigned long flags)
{
(void)flags;
}
static __always_inline void
cpu_intr_save(unsigned long *flags)
{
(void)flags;
}
static __always_inline bool
cpu_intr_enabled(void)
{
return false;
}
static __always_inline void
cpu_pause(void)
{
}
static __always_inline void
cpu_idle(void)
{
}
noreturn static __always_inline void
cpu_halt(void)
{
for (;;);
}
void cpu_halt_broadcast(void);
#define cpu_local_ptr(var) (&(var))
static inline struct cpu *
cpu_current(void)
{
return NULL;
}
static inline unsigned int
cpu_id(void)
{
return 0;
}
static inline unsigned int
cpu_count(void)
{
return 1;
}
/*
* Log processor information.
*/
void cpu_log_info(const struct cpu *cpu);
void cpu_mp_setup(void);
static inline void
cpu_send_xcall(unsigned int cpu)
{
(void)cpu;
}
static inline void
cpu_send_thread_schedule(unsigned int cpu)
{
(void)cpu;
}
/*
* This init operation provides :
* - initialization of the BSP structure.
* - cpu_delay()
* - cpu_local_ptr() and cpu_local_var()
*/
INIT_OP_DECLARE(cpu_setup);
/*
* This init operation provides :
* - cpu_count()
*/
INIT_OP_DECLARE(cpu_mp_probe);
#endif /* __ASSEMBLER__ */
#endif /* _ARM_CPU_H */
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