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/**
* @file
*
* @ingroup mpc55xx
*
* @brief Documentation for this file
*/
/*
* Copyright (c) 2008
* Embedded Brains GmbH
* Obere Lagerstr. 30
* D-82178 Puchheim
* Germany
* rtems@embedded-brains.de
*
* The license and distribution terms for this file may be found in the file
* LICENSE in this distribution or at http://www.rtems.com/license/LICENSE.
*/
/**
* @defgroup mpc55xx BSP for MPC55xx boards
*/
/**
* @defgroup mpc55xx_config Configuration files
*
* @ingroup mpc55xx
*
* Makefiles, configure scripts etc.
*/
/**
* @page mpc55xx_ext_doc External Documentation
*
* @section mpc55xx_ext_doc_mpc5567rm_1 MPC5567 Microcontroller Reference Manual (Rev. 1, January 2007, Volume 1 of 2)
* @section mpc55xx_ext_doc_mpc5567rm_2 MPC5567 Microcontroller Reference Manual (Rev. 1, January 2007, Volume 2 of 2)
*/
#ifndef LIBCPU_POWERPC_MPC55XX_H
#define LIBCPU_POWERPC_MPC55XX_H
#include <stddef.h>
#include <stdint.h>
/* Defined in copy.S */
int mpc55xx_copy_8( const void *src, void *dest, size_t n);
/* Defined in copy.S */
int mpc55xx_zero_8( void *dest, size_t n);
/* Defined in copy.S */
int mpc55xx_zero_32( void *dest, size_t n);
/* Defined in fmpll.S */
void mpc55xx_fmpll_reset_config();
/* Defined in fmpll.S */
void mpc55xx_fmpll_wait_for_lock();
/* Defined in fmpll.S */
int mpc55xx_get_system_clock();
/* Defined in fmpll.S */
void mpc55xx_system_reset();
/* Defined in flash.S */
void mpc55xx_flash_config();
#define MPC55XX_CACHE_ALIGNED_MASK ((uintptr_t) 0x1f)
#define MPC55XX_CACHE_LINE_SIZE 32
/**
* @brief Returns true if the buffer starting at @a s of size @a n is cache aligned.
*/
static inline int mpc55xx_is_cache_aligned( const void *s, size_t n)
{
return !(((uintptr_t) s & MPC55XX_CACHE_ALIGNED_MASK) || (n & MPC55XX_CACHE_ALIGNED_MASK));
}
static inline void* mpc55xx_cache_aligned_start( const void *s)
{
return ((uintptr_t) s & MPC55XX_CACHE_ALIGNED_MASK) ? (((uintptr_t) s & ~MPC55XX_CACHE_ALIGNED_MASK) + MPC55XX_CACHE_LINE_SIZE) : s;
}
static inline size_t mpc55xx_non_cache_aligned_size( const void *s)
{
return (uintptr_t) mpc55xx_cache_aligned_start( s) - (uintptr_t) s;
}
static inline size_t mpc55xx_cache_aligned_size( const void *s, size_t n)
{
return (n - mpc55xx_non_cache_aligned_size( s)) & ~MPC55XX_CACHE_ALIGNED_MASK;
}
/**
* @brief Returns the number of leading zeros.
*/
static inline uint32_t mpc55xx_count_leading_zeros( uint32_t value)
{
uint32_t count;
asm (
"cntlzw %0, %1;"
: "=r" (count)
: "r" (value)
);
return count;
}
#endif /* LIBCPU_POWERPC_MPC55XX_H */
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