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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 by Alan Korr
*
* 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 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#ifndef __SYSTEM_H__
#define __SYSTEM_H__
#include "cpu.h"
#include "stdbool.h"
#include "kernel.h"
extern void system_reboot (void);
/* Called from any UIE handler and panicf - wait for a key and return
* to reboot system. */
extern void system_exception_wait(void);
extern void system_init(void);
extern long cpu_frequency;
struct flash_header {
unsigned long magic;
unsigned long length;
char version[32];
};
bool detect_flashed_romimage(void);
bool detect_flashed_ramimage(void);
bool detect_original_firmware(void);
#if defined(HAVE_ADJUSTABLE_CPU_FREQ) \
&& defined(ROCKBOX_HAS_LOGF) && (NUM_CORES == 1)
#define CPU_BOOST_LOGGING
#endif
#ifdef HAVE_ADJUSTABLE_CPU_FREQ
#if NUM_CORES > 1
extern struct spinlock boostctrl_spin;
#endif
void cpu_boost_init(void);
#define FREQ cpu_frequency
void set_cpu_frequency(long frequency);
#ifdef CPU_BOOST_LOGGING
char * cpu_boost_log_getlog_first(void);
char * cpu_boost_log_getlog_next(void);
int cpu_boost_log_getcount(void);
void cpu_boost_(bool on_off, char* location, int line);
#else
void cpu_boost(bool on_off);
#endif
void cpu_idle_mode(bool on_off);
int get_cpu_boost_counter(void);
#else
#define FREQ CPU_FREQ
#define set_cpu_frequency(frequency)
#define cpu_boost(on_off)
#define cpu_boost_id(on_off, id)
#define cpu_idle_mode(on_off)
#define get_cpu_boost_counter()
#define get_cpu_boost_tracker()
#endif
#ifdef CPU_BOOST_LOGGING
#define cpu_boost(on_off) cpu_boost_(on_off,__FILE__, __LINE__)
#endif
#define BAUDRATE 9600
#ifndef NULL
#define NULL ((void*)0)
#endif
#ifndef MIN
#define MIN(a, b) (((a)<(b))?(a):(b))
#endif
#ifndef MAX
#define MAX(a, b) (((a)>(b))?(a):(b))
#endif
/* return number of elements in array a */
#define ARRAYLEN(a) (sizeof(a)/sizeof((a)[0]))
/* return p incremented by specified number of bytes */
#define SKIPBYTES(p, count) ((typeof (p))((char *)(p) + (count)))
#define P2_M1(p2) ((1 << (p2))-1)
/* align up or down to nearest 2^p2 */
#define ALIGN_DOWN_P2(n, p2) ((n) & ~P2_M1(p2))
#define ALIGN_UP_P2(n, p2) ALIGN_DOWN_P2((n) + P2_M1(p2),p2)
/* align up or down to nearest integer multiple of a */
#define ALIGN_DOWN(n, a) ((n)/(a)*(a))
#define ALIGN_UP(n, a) ALIGN_DOWN((n)+((a)-1),a)
/* live endianness conversion */
#ifdef ROCKBOX_LITTLE_ENDIAN
#define letoh16(x) (x)
#define letoh32(x) (x)
#define htole16(x) (x)
#define htole32(x) (x)
#define betoh16(x) swap16(x)
#define betoh32(x) swap32(x)
#define htobe16(x) swap16(x)
#define htobe32(x) swap32(x)
#define swap_odd_even_be32(x) (x)
#define swap_odd_even_le32(x) swap_odd_even32(x)
#else
#define letoh16(x) swap16(x)
#define letoh32(x) swap32(x)
#define htole16(x) swap16(x)
#define htole32(x) swap32(x)
#define betoh16(x) (x)
#define betoh32(x) (x)
#define htobe16(x) (x)
#define htobe32(x) (x)
#define swap_odd_even_be32(x) swap_odd_even32(x)
#define swap_odd_even_le32(x) (x)
#endif
/* static endianness conversion */
#define SWAP_16(x) ((typeof(x))(unsigned short)(((unsigned short)(x) >> 8) | \
((unsigned short)(x) << 8)))
#define SWAP_32(x) ((typeof(x))(unsigned long)( ((unsigned long)(x) >> 24) | \
(((unsigned long)(x) & 0xff0000ul) >> 8) | \
(((unsigned long)(x) & 0xff00ul) << 8) | \
((unsigned long)(x) << 24)))
#ifdef ROCKBOX_LITTLE_ENDIAN
#define LE_TO_H16(x) (x)
#define LE_TO_H32(x) (x)
#define H_TO_LE16(x) (x)
#define H_TO_LE32(x) (x)
#define BE_TO_H16(x) SWAP_16(x)
#define BE_TO_H32(x) SWAP_32(x)
#define H_TO_BE16(x) SWAP_16(x)
#define H_TO_BE32(x) SWAP_32(x)
#else
#define LE_TO_H16(x) SWAP_16(x)
#define LE_TO_H32(x) SWAP_32(x)
#define H_TO_LE16(x) SWAP_16(x)
#define H_TO_LE32(x) SWAP_32(x)
#define BE_TO_H16(x) (x)
#define BE_TO_H32(x) (x)
#define H_TO_BE16(x) (x)
#define H_TO_BE32(x) (x)
#endif
/* Get the byte offset of a type's member */
#define OFFSETOF(type, membername) ((off_t)&((type *)0)->membername)
/* Get the type pointer from one of its members */
#define TYPE_FROM_MEMBER(type, memberptr, membername) \
((type *)((intptr_t)(memberptr) - OFFSETOF(type, membername)))
/* Use to give gcc hints on which branch is most likely taken */
#if defined(__GNUC__) && __GNUC__ >= 3
#define LIKELY(x) __builtin_expect(!!(x), 1)
#define UNLIKELY(x) __builtin_expect(!!(x), 0)
#else
#define LIKELY(x) (x)
#define UNLIKELY(x) (x)
#endif
/* returns index of first set bit + 1 or 0 if no bits are set */
int find_first_set_bit(uint32_t val);
static inline __attribute__((always_inline))
uint32_t isolate_first_bit(uint32_t val)
{ return val & -val; }
/* gcc 3.4 changed the format of the constraints */
#if (__GNUC__ >= 3) && (__GNUC_MINOR__ > 3) || (__GNUC__ >= 4)
#define I_CONSTRAINT "I08"
#else
#define I_CONSTRAINT "I"
#endif
/* Utilize the user break controller to catch invalid memory accesses. */
int system_memory_guard(int newmode);
enum {
MEMGUARD_KEEP = -1, /* don't change the mode; for reading */
MEMGUARD_NONE = 0, /* catch nothing */
MEMGUARD_FLASH_WRITES, /* catch writes to area 02 (flash ROM) */
MEMGUARD_ZERO_AREA, /* catch all accesses to areas 00 and 01 */
MAXMEMGUARD
};
#ifndef SIMULATOR
#include "system-target.h"
#else /* SIMULATOR */
static inline uint16_t swap16(uint16_t value)
/*
result[15..8] = value[ 7..0];
result[ 7..0] = value[15..8];
*/
{
return (value >> 8) | (value << 8);
}
static inline uint32_t swap32(uint32_t value)
/*
result[31..24] = value[ 7.. 0];
result[23..16] = value[15.. 8];
result[15.. 8] = value[23..16];
result[ 7.. 0] = value[31..24];
*/
{
uint32_t hi = swap16(value >> 16);
uint32_t lo = swap16(value & 0xffff);
return (lo << 16) | hi;
}
static inline uint32_t swap_odd_even32(uint32_t value)
{
/*
result[31..24],[15.. 8] = value[23..16],[ 7.. 0]
result[23..16],[ 7.. 0] = value[31..24],[15.. 8]
*/
uint32_t t = value & 0xff00ff00;
return (t >> 8) | ((t ^ value) << 8);
}
#endif /* !SIMULATOR */
/* Declare this as HIGHEST_IRQ_LEVEL if they don't differ */
#ifndef DISABLE_INTERRUPTS
#define DISABLE_INTERRUPTS HIGHEST_IRQ_LEVEL
#endif
/* Just define these as empty if not declared */
#ifndef HAVE_INVALIDATE_ICACHE
#define invalidate_icache()
#endif
#ifndef HAVE_FLUSH_ICACHE
#define flush_icache()
#endif
#ifdef PROC_NEEDS_CACHEALIGN
/* Cache alignment attributes and sizes are enabled */
/* 2^CACHEALIGN_BITS = the byte size */
#define CACHEALIGN_SIZE (1u << CACHEALIGN_BITS)
#define CACHEALIGN_ATTR __attribute__((aligned(CACHEALIGN_SIZE)))
/* Aligns x up to a CACHEALIGN_SIZE boundary */
#define CACHEALIGN_UP(x) \
((typeof (x))ALIGN_UP_P2((uintptr_t)(x), CACHEALIGN_BITS))
/* Aligns x down to a CACHEALIGN_SIZE boundary */
#define CACHEALIGN_DOWN(x) \
((typeof (x))ALIGN_DOWN_P2((uintptr_t)(x), CACHEALIGN_BITS))
/* Aligns at least to the greater of size x or CACHEALIGN_SIZE */
#define CACHEALIGN_AT_LEAST_ATTR(x) \
__attribute__((aligned(CACHEALIGN_UP(x))))
/* Aligns a buffer pointer and size to proper boundaries */
#define CACHEALIGN_BUFFER(start, size) \
({ align_buffer(PUN_PTR(void **, (start)), (size), CACHEALIGN_SIZE); })
#else /* ndef PROC_NEEDS_CACHEALIGN */
/* Cache alignment attributes and sizes are not enabled */
#define CACHEALIGN_ATTR
#define CACHEALIGN_AT_LEAST_ATTR(x) \
__attribute__((aligned(x)))
#define CACHEALIGN_UP(x) (x)
#define CACHEALIGN_DOWN(x) (x)
/* Make no adjustments */
#define CACHEALIGN_BUFFER(start, size) \
({ (void)(start); (size); })
#endif /* PROC_NEEDS_CACHEALIGN */
/* Double-cast to avoid 'dereferencing type-punned pointer will
* break strict aliasing rules' B.S. */
#define PUN_PTR(type, p) ((type)(intptr_t)(p))
#endif /* __SYSTEM_H__ */
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