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75 lines
2.1 KiB
C
75 lines
2.1 KiB
C
17 years ago
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/******************************************************************************
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FILE : startcf.h
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PURPOSE : startup code for ColdFire
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LANGUAGE: C
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Notes:
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1) Default entry point is _startup.
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. disable interrupts
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. the SP is set to __SP_AFTER_RESET
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. SP must be initialized to valid memory
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in case the memory it points to is not valid using MEMORY_INIT macro
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2) __initialize_hardware is called. Here you can initialize memory and some peripherics
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at this point global variables are not initialized yet
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3) After __initialize_hardware memory is setup; initialize SP to _SP_INIT and perform
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needed initialisations for the language (clear memory, data rom copy).
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4) void __initialize_system(void); is called
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to allow additional hardware initialization (UART, GPIOs, etc...)
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5) Jump to main
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*/
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/********************************************************************************/
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#ifndef STARTCF_H
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#define STARTCF_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "support_common.h"
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extern unsigned long far __SP_INIT[];
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extern unsigned long far __SP_AFTER_RESET[];
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#ifndef MEMORY_INIT
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/* If MEMORY_INIT is set then it performs
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minimal memory initialization (to preset SP to __SP_AFTER_RESET, etc...)
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*/
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#define MEMORY_INIT
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#endif
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void _startup(void);
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#ifndef SUPPORT_ROM_TO_RAM
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/*
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* If SUPPORT_ROM_TO_RAM is set, _S_romp is used to define the copy to be performed.
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* If it is not set, there's a single block to copy, performed directly without
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* using the __S_romp structure, based on __DATA_RAM, __DATA_ROM and
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* __DATA_END symbols.
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*
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* Set to 0 for more aggressive dead stripping ...
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*/
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#define SUPPORT_ROM_TO_RAM 1
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#endif
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/* format of the ROM table info entry ... */
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typedef struct RomInfo {
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void *Source;
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void *Target;
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unsigned long Size;
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} RomInfo;
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/* imported data */
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extern far RomInfo _S_romp[]; /* linker defined symbol */
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#ifdef __cplusplus
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}
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#endif
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#endif
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