diff options
Diffstat (limited to 'cpukit/rtems/include/rtems/rtems/cache.h')
| -rw-r--r-- | cpukit/rtems/include/rtems/rtems/cache.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/cpukit/rtems/include/rtems/rtems/cache.h b/cpukit/rtems/include/rtems/rtems/cache.h index a7dcaa60fd..f1dc9bf03d 100644 --- a/cpukit/rtems/include/rtems/rtems/cache.h +++ b/cpukit/rtems/include/rtems/rtems/cache.h @@ -61,6 +61,17 @@ size_t rtems_cache_get_data_line_size( void ); size_t rtems_cache_get_instruction_line_size( void ); /** + * @brief Returns the maximal cache line size of all cache kinds in bytes. + * + * Returns computed or obtained maximal cache line size of all + * all caches in the system. + * + * @retval 0 No cache is present + * @retval positive The maximal cache line size in bytes. + */ +size_t rtems_cache_get_maximal_line_size( void ); + +/** * @brief Returns the data cache size in bytes. * * @param[in] level The cache level of interest. The cache level zero @@ -125,6 +136,24 @@ void rtems_cache_invalidate_multiple_instruction_lines( size_t size ); + +/** + * @brief Ensure necessary synchronization required after code changes + * + * When code is loaded or modified then many Harvard cache equipped + * systems require synchronization of main memory and or updated + * code in data cache to ensure visibility of change in all + * connected CPUs instruction memory view. This operation + * should be used by run time loader for example. + * + * @param[in] addr The start address of the area to invalidate. + * @param[in] size The size in bytes of the area to invalidate. + */ +void rtems_cache_instruction_sync_after_code_change( + const void * code_addr, + size_t n_bytes +); + /** * @brief Flushes the entire data cache. * |