blob: 135ab92ff96f716be7d7ea302d6638eeeff75612 [file] [log] [blame]
FILE : startcf.h
PURPOSE : startup code for ColdFire
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" {
#include "support_common.h"
extern unsigned long far __SP_INIT[];
extern unsigned long far __SP_AFTER_RESET[];
/* If MEMORY_INIT is set then it performs
minimal memory initialization (to preset SP to __SP_AFTER_RESET, etc...)
void _startup(void);
* 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 ...
/* 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