Subversion Repositories openrisc_2011-10-31

/******************************************************************************

  FILE    : startcf.h

  PURPOSE : startup code for ColdFire

  LANGUAGE: C

  Notes:

        1) Default entry point is _startup.

           . disable interrupts

           . the SP is set to __SP_AFTER_RESET

           . SP must be initialized to valid memory

             in case the memory it points to is not valid using MEMORY_INIT macro

        2) __initialize_hardware is called. Here you can initialize memory and some peripherics

           at this point global variables are not initialized yet

        3) After __initialize_hardware memory is setup; initialize SP to _SP_INIT and perform

           needed initialisations for the language (clear memory, data rom copy).

        4) void __initialize_system(void); is called

           to allow additional hardware initialization (UART, GPIOs, etc...)

        5) Jump to main

*/

/********************************************************************************/

#ifndef STARTCF_H

#define STARTCF_H

#ifdef __cplusplus

extern "C" {

#endif

#include "support_common.h"

extern unsigned long far __SP_INIT[];

extern unsigned long far __SP_AFTER_RESET[];

#ifndef MEMORY_INIT

/* If MEMORY_INIT is set then it performs

   minimal memory initialization (to preset SP to __SP_AFTER_RESET, etc...)

*/

#define MEMORY_INIT

#endif

void _startup(void);

#ifndef SUPPORT_ROM_TO_RAM

  /*

   * If SUPPORT_ROM_TO_RAM is set, _S_romp is used to define the copy to be performed.

   * If it is not set, there's a single block to copy, performed directly without

   * using the __S_romp structure, based on __DATA_RAM, __DATA_ROM and

   * __DATA_END symbols.

   *

   * Set to 0 for more aggressive dead stripping ...

   */

#define SUPPORT_ROM_TO_RAM 1

#endif

/* format of the ROM table info entry ... */

typedef struct RomInfo {

        void            *Source;

        void            *Target;

        unsigned long    Size;

} RomInfo;

/* imported data */

extern far RomInfo _S_romp[];           /* linker defined symbol */

#ifdef __cplusplus

}

#endif

#endif