Commit 4511ec15 authored by Michal Simek's avatar Michal Simek

microblaze_v8: system.h processor.h

Reviewed-by: default avatarIngo Molnar <mingo@elte.hu>
Acked-by: default avatarJohn Linn <john.linn@xilinx.com>
Acked-by: default avatarStephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: default avatarJohn Williams <john.williams@petalogix.com>
Signed-off-by: default avatarMichal Simek <monstr@monstr.eu>
parent 6a3cece5
/*
* Copyright (C) 2008 Michal Simek
* Copyright (C) 2008 PetaLogix
* Copyright (C) 2006 Atmark Techno, Inc.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#ifndef _ASM_MICROBLAZE_PROCESSOR_H
#define _ASM_MICROBLAZE_PROCESSOR_H
#include <asm/ptrace.h>
#include <asm/setup.h>
#include <asm/registers.h>
#include <asm/segment.h>
# ifndef __ASSEMBLY__
/* from kernel/cpu/mb.c */
extern const struct seq_operations cpuinfo_op;
# define cpu_relax() barrier()
# define cpu_sleep() do {} while (0)
# define prepare_to_copy(tsk) do {} while (0)
# endif /* __ASSEMBLY__ */
/*
* User space process size: memory size
*
* TASK_SIZE on MMU cpu is usually 1GB. However, on no-MMU arch, both
* user processes and the kernel is on the same memory region. They
* both share the memory space and that is limited by the amount of
* physical memory. thus, we set TASK_SIZE == amount of total memory.
*/
# define TASK_SIZE (0x81000000 - 0x80000000)
/*
* Default implementation of macro that returns current
* instruction pointer ("program counter").
*/
# define current_text_addr() ({ __label__ _l; _l: &&_l; })
/*
* This decides where the kernel will search for a free chunk of vm
* space during mmap's. We won't be using it
*/
# define TASK_UNMAPPED_BASE 0
/* definition in include/linux/sched.h */
struct task_struct;
/* thread_struct is gone. use thread_info instead. */
struct thread_struct { };
# define INIT_THREAD { }
/* Do necessary setup to start up a newly executed thread. */
static inline void start_thread(struct pt_regs *regs,
unsigned long pc,
unsigned long usp)
{
regs->pc = pc;
regs->r1 = usp;
regs->kernel_mode = 0;
}
/* Free all resources held by a thread. */
static inline void release_thread(struct task_struct *dead_task)
{
}
/* Free all resources held by a thread. */
static inline void exit_thread(void)
{
}
extern unsigned long thread_saved_pc(struct task_struct *t);
extern unsigned long get_wchan(struct task_struct *p);
/*
* create a kernel thread without removing it from tasklists
*/
extern int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
# define task_pt_regs(tsk) \
(((struct pt_regs *)(THREAD_SIZE + task_stack_page(tsk))) - 1)
# define KSTK_EIP(tsk) (0)
# define KSTK_ESP(tsk) (0)
#endif /* _ASM_MICROBLAZE_PROCESSOR_H */
/*
* Copyright (C) 2006 Atmark Techno, Inc.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#ifndef _ASM_MICROBLAZE_SYSTEM_H
#define _ASM_MICROBLAZE_SYSTEM_H
#include <asm/registers.h>
#include <asm/setup.h>
#include <asm/irqflags.h>
struct task_struct;
struct thread_info;
extern struct task_struct *_switch_to(struct thread_info *prev,
struct thread_info *next);
#define switch_to(prev, next, last) \
do { \
(last) = _switch_to(task_thread_info(prev), \
task_thread_info(next)); \
} while (0)
#define smp_read_barrier_depends() do {} while (0)
#define read_barrier_depends() do {} while (0)
#define nop() asm volatile ("nop")
#define mb() barrier()
#define rmb() mb()
#define wmb() mb()
#define set_mb(var, value) do { var = value; mb(); } while (0)
#define set_wmb(var, value) do { var = value; wmb(); } while (0)
#define smp_mb() mb()
#define smp_rmb() rmb()
#define smp_wmb() wmb()
void show_trace(struct task_struct *task, unsigned long *stack);
void __bad_xchg(volatile void *ptr, int size);
static inline unsigned long __xchg(unsigned long x, volatile void *ptr,
int size)
{
unsigned long ret;
unsigned long flags;
switch (size) {
case 1:
local_irq_save(flags);
ret = *(volatile unsigned char *)ptr;
*(volatile unsigned char *)ptr = x;
local_irq_restore(flags);
break;
case 4:
local_irq_save(flags);
ret = *(volatile unsigned long *)ptr;
*(volatile unsigned long *)ptr = x;
local_irq_restore(flags);
break;
default:
__bad_xchg(ptr, size), ret = 0;
break;
}
return ret;
}
void disable_hlt(void);
void enable_hlt(void);
void default_idle(void);
#define xchg(ptr, x) \
((__typeof__(*(ptr))) __xchg((unsigned long)(x), (ptr), sizeof(*(ptr))))
void free_init_pages(char *what, unsigned long begin, unsigned long end);
void free_initmem(void);
extern char *klimit;
extern void ret_from_fork(void);
#ifdef CONFIG_DEBUG_FS
extern struct dentry *of_debugfs_root;
#endif
#define arch_align_stack(x) (x)
#endif /* _ASM_MICROBLAZE_SYSTEM_H */
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