startup.asm

实现Fujitsu-FFMC-16-V120 ucos系统移植

;====================================================================
;    MB90500/MB90600/MB90700/MB90700H/MB90200 Series C Compiler,
;    (C) FUJITSU MIKROELEKTRONIK GMBH 1998-99
;
;    Startup file for memory and basic controller initialization
;====================================================================

	  .PROGRAM  STARTUP
	  .TITLE    "STARTUP FILE FOR MEMORY INITIALIZATION"

;====================================================================
; CHECK ALL OPTIONS WHETHER THEY FIT TO THE APPLICATION;
;
; Configure this startup file in the "Settings" section. Search for
; comments with leading "; <<<". This points to the items to be set.
;
;====================================================================
;    Disclaimer
;====================================================================
;		       FUJITSU MIKROELEKTRONIK GMBH
;		       Am Siebenstein 6-10, 63303 Dreieich
;		       Tel.:++49/6103/690-0,Fax - 122
;
;	 The following software is for demonstration purposes only.
;	 It is not fully tested, nor validated in order to fullfill
;	 its task under all circumstances. Therefore, this software
;	 or any part of it must only be used in an evaluation
;	 laboratory environment.
;	 This software is subject to the rules of our standard
;	 DISCLAIMER, that is delivered with our SW-tools (on the CD
;	 "Micros Documentation & Software V3.0" see "\START.HTM" or
;	 see our Internet Page -
;	 http://www.fujitsu-ede.com/products/micro/disclaimer.html
;
;====================================================================
;    History
;====================================================================
;
; Version 1.00	    25. Aug 98	Holger Loesche
;   - original version
; Version 1.01	    31. Aug 98	Holger Loesche
;   - bug: conditional for reset vector was missing
; Version 1.02	    16. Oct 98	Holger Loesche
;   - memory model AUTO introduced (use far calls only and repair
;     stack, if necessary
;   - colons removed from EQU labels
;   - stream_init call added
;   - RAMCONST set as default (also for ROMCONST systems)
; Version 1.03	    19. Oct 98	Holger Loesche
;   - bug: SEGCOPY macro: used size changed from sizeof(src) to
;     sizeof(dest). It was conflicting with RAMCONST, if compiler
;     is set to ROMCONST.
; Version 1.04	    21. Oct 98	Holger Loesche
;   - ROM mirror option added
;   - _exit call added
;   - bug: EQU ON/OFF move to upper lines
; Version 1.05	    28. Oct 98	Holger Loesche
;   - CALL/CALLP _exit was not differed
; Version 1.06	    18. Feb 99	Holger Loesche
;   - default external bus configuration: WR signal enabled
;   - ROMMIRROR macro processing simplified (less warnings>
; Version 1.07	    01. April 99  Holger Loesche
;   - Version string had wrong number (1.05 instead of 1.06)
;   - Copyright slightly changed
; Version 1.08	    16. April 99  Juergen Rohn
;   - Version placed in separate section (caused problems with fixed
;     reset vector)
; Version 1.09	    12. May 99	  Holger Loesche
;   - MB90400 family added
;   - several coments changed
;   - INTROM_EXTBUS macro was wrong
;   - BUSWIDTH macro removed, no resolved from bus signal
;   - disclaimer added
; Version 1.10	    17. May 99	  Holger Loesche
;   - change in 1.09 (MODEBYTE) related to BUSWIDTH was not complete
; Version 1.11	    01.06. May 99    Holger Loesche
;   - confusing old line with comment removed, was refering to unused
;     old BUSWIDTH
; Version 1.12	    23.06. May 99    Holger Loesche
;   - LIBINIT is using ON/OFF instead of extra macro now
;
;====================================================================
	  .SECTION  VERSIONS, CONST
;	   .SDATA    "Start 1.12\n"	 ; comment this line to remove

;====================================================================
;    Settings
;====================================================================
#set	  OFF	    0
#set	  ON	    1

; ------- controller family ---------

#set	  MB90700   0
#set	  MB90200   1
#set	  MB90600   2
#set	  MB90500   3
#set	  MB90400   4

#set	  FAMILY    MB90500	   ; <<< select family

; ------- Memory models ---------      default address size
				   ;	  data	    code
#set	  SMALL     0		   ;	 16 Bit    16 Bit
#set	  MEDIUM    1		   ;	 16 Bit    24 Bit
#set	  COMPACT   2		   ;	 24 Bit    16 Bit
#set	  LARGE     3		   ;	 24 Bit    24 Bit

#set	  AUTO	    4		   ; works always, might waste 2 bytes

#set	  MEMMODEL  AUTO	   ; <<< C-memory model

; The selected memory model should be set in order to fit to the
; model selected for the compiler.
; Note, in this startup version AUTO will work for all
; C-models. However, if the compiler is configured for SMALL or
; COMPACT, two bytes on stack will be lost. If this is not
; acceptable, the above setting should be set to the correct model.

; ------- Constant symbols ---------

#set	  ROMCONST  0		   ; works only with compiler ROMCONST
#set	  RAMCONST  1		   ; works with BOTH compiler settings

#set	  CONSTDATA RAMCONST	   ; <<< set RAMCONST or ROMCONST

; - RAMCONST (default) should always work, even if compiler is set
;   to ROMCONST.
;   If compiler is set to ROMCONST and this startup file is set to
;   RAMCONST, this startup file will only generate an empty section
;   CINIT. The code, which copies from CONST to CINIT will not have
;   any effect then.
; - It is highly recommended to set the compiler to ROMCONST for
;   single-chip mode or internal ROM+ext bus.
; - Full external bus requires external address mapping.
;   Single-chip can be emulated by the emulator debugger.
;   ROM mirror can also be used with simulator.
;
;see also MIRROR options of external bus settings

; ------- stack ---------

#set	  USRSTACK  0	 ; use user stack, system stack for interrupts
#set	  SYSSTACK  1	 ; use system stack for all (program + inter)

#set	  STACKUSE  SYSSTACK	   ; <<< set used stacks

; - If only SSB is used and SSB is linked to a different bank than USB,
;   make sure that all C-modules (which generate far pointers to stack
;   data) have "#pragma SSB". Applies only to exclusive configurations.
; - Note, several library functions require quite a big stack (due to
;   ANSI). Check the stack information files (*.stk) in the LIB\907
;   directory.

SSSIZE	       .EQU 128 	   ; <<< system stack size in words
#if STACKUSE == USRSTACK
USSIZE	       .EQU 384 	   ; <<< user stack size, if used
#else
USSIZE	       .EQU 1		   ; just a dummy
#endif


#if STACKUSE == USRSTACK
#  macro RELOAD_SP		   ; used after function call
	  MOVW A, #USTACK_TOP	   ; repair stack, if stream_init
	  MOVW SP,A		   ; was completed by RET (not RETP)
#  endm
#else
#  macro RELOAD_SP		   ; used after function call
	  MOVW A, #SSTACK_TOP	   ; repair stack, in case stream_init
	  MOVW SP,A		   ; was completed by RET (not RETP)
#  endm
#endif

; ------- General Register Bank ---------

#set	  REGBANK   0		   ; <<< set default register bank

; set the General Register Bank that is to be used after startup.
; Usually, this is bank 0, which applies to address H'180..H'18F. Set
; in the range from 0 to 31.

#if REGBANK > 31 || REGBANK < 0
#  error REGBANK setting out of range
#endif
; ------- Library interface ---------

#set	      NOLIBINIT 0	   ; do not initialize Library
#set	      DOLIBINIT 1	   ; initialize Library interface

#set	      CLIBINIT	OFF	   ; <<< select extended libray usage
;#set	       CLIBINIT  DOLIBINIT   ; (c)amusin

; This option has only to be set, if file-IO/standard-IO function of the
; C-libraray have to be used (printf(), fopen()...). This also requires
; low-level functions to be defined by the application software.
; For other library functions like (e.g. sprintf()) all this is not
; necessary. However, several functions consume a large amount of stack.

; ------- Clock selection --------

#set	  NOCLOCK	 0	   ; do not touch CKSCR register
#set	  MAINCLOCK	 1	   ; select main clock (1/2 external)
#set	  PLLx1 	 2	   ; set PLL to x1 ext. clock/quartz
#set	  PLLx2 	 3	   ; set PLL to x2 ext. clock/quartz
#set	  PLLx3 	 4	   ; set PLL to x3 ext. clock/quartz
#set	  PLLx4 	 5	   ; set PLL to x4 ext. clock/quartz

#set	  CLOCKSPEED	PLLx1	   ; <<< set PLL ratio
#set	  CLOCKWAIT	 ON	   ; <<< wait for stabilized PLL, if
				   ;	 PLL is used
; The clock is set quiet early. However, if CLOCKWAIT is ON, polling
; for machine clock to be switched to PLL is done at the end of this
; file. Therefore, the stabilization time is not wasted. Main() will
; finally start at correct speed. Resources can immediately be used.
;
; This startup file version does not support subclock.

; ------- Bus interface ---------

#set	  SINGLE_CHIP	 0	   ; all internal
#set	  INTROM_EXTBUS  1	   ; mask ROM, FLASH, or OTP ROM used
#set	  EXTROM_EXTBUS  2	   ; full external bus (INROM not used)

;#set	   BUSMODE SINGLE_CHIP	    ; <<< set bus mode (see mode pins)
#set	  BUSMODE INTROM_EXTBUS      ; <<< set bus mode (see mode pins)

#set	  ROMMIRROR	 ON	   ; <<< ROM mirror function ON/OFF
				   ;	 MB90500/400 family only

; In Internal ROM / External Bus mode one can select whether to mirror
; area FF4000..FFFFFF to 004000..00FFFF. This is necessary to get the
; compiler ROMCONST option working. However, if ROMCONST is not used,
; this area might be used to access external memory. This is intended
; to increase performance, if a lot of dynamic data have to be accessed.
; In SMALL and MEDIUM model these data can be accessed within bank 0,
; which allows to use near addressing.
; These controller without the ROMM-control register always have the
; mirror function on in INROM mode.

; If BUSMODE is "SINGLE_CHIP", ignore remaining bus settings.

#set	  WIDTH_8	 0	   ; 8 Bit external bus
#set	  WIDTH_16	 1	   ; 16 Bit external bus

#set	  BUSWIDTH     WIDTH_16 ; (c)amusin

#set	  AUTOWAIT_IO	 0	   ; <<< 0..3 waitstates for IO area
#set	  AUTOWAIT_LO	 0	   ; <<< 0..3 for lower external area
#set	  AUTOWAIT_HI	 0	   ; <<< 0..3 for higher external area

#set	  ADDR_PINS B'11111110	   ; <<< select used address lines
				   ;	 A23..A16 to be output.
; This is the value to be set in HACR-register. "1" means: pin used as
; IO-port. (B'10000000 => A23 not used, B'00000001 => A16 not used)

#set	  BUS_SIGNAL B'00000100    ; <<< enable bus control signals
;		       ||||||||__ ignored
;		       |||||||___ bus width lower memory (0:16, 1:8Bit)
;		       ||||||____ output WR signal(s)	 (1: enabled  )
;		       |||||_____ bus width upper memory (0:16, 1:8Bit)
;		       ||||______ bus width ext IO area  (0:16, 1:8Bit)
;		       |||_______ enable HRQ input	 (1: enabled  )
;		       ||________ enable RDY input	 (1: enabled  )
;		       |_________ output CLK signal	 (1:enabled   )

; These settings correspond to the EPCR-register.
; Hint: Except for MB90500/400 devices the clock output is needed for
; external RDY synchronisation, if Ready function is used.
; Hint: Don't forget to enable WR signals, if external RAM has to be
; written to.

#set	  iARSR     ((AUTOWAIT_IO<<6)|((AUTOWAIT_HI&3)<<4)|(AUTOWAIT_LO&3))

; ------- Reset Vector ---------

#set	  RESET_VECTOR	 ON	   ; <<< enable reset vector

#if BUSMODE == SINGLE_CHIP
#set	MODEBYTE       0
#else
#  set	  MODEBYTE	 ( ((BUSMODE&3)<<6) | ((~BUS_SIGNAL)&8) )
;#set	 MODEBYTE	( ((BUSMODE&3)<<6) | 0x08 ) ; (c)amusin 16 bit width
#endif

; Above setting can also be used, if all other interrupt vectors are
; specified via "pragma intvect". Only if interrupts 0..7 are specified
; via "pragma intvect", this will conflict with the vector in this
; module. The reason is the INTVECT section, which includes the whole
; area from the lowest to the highest specified vector.

#if RESET_VECTOR == ON
	  .SECTION	  RESVECT, CONST, LOCATE=H'FFFFDC
	  .DATA.E _start
	  .DATA.B MODEBYTE
#endif


; <<< END OF SETTINGS >>>

;====================================================================
; Several fixed addresses (fixed for MB90xxx controllers)
;====================================================================

LPMCR	  .EQU	    0xA0	   ; Low power mode control register
CKSCR	  .EQU	    0xA1	   ; Clock select control register
#if BUSMODE != SINGLE_CHIP
ARSR	  .EQU	    0xA5	   ; *1) Automatic ready function reg
HACR	  .EQU	    0xA6	   ; *1) External address output reg
EPCR	  .EQU	    0xA7	   ; *1) Bus control signal selection
#endif
#if FAMILY == MB90500 || FAMILY == MB90400
ROMM	  .EQU	    0x6F	   ; *2) ROM mirror control register
#endif
WDTC	  .EQU	    0xA8	   ; Watchdog control register
TBTC	  .EQU	    0xA9	   ; Timerbase timer control register