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/**************************************************************************************************
Filename: chipcon_cstartup.s51
Revised: $Date: 2010-01-28 17:00:06 -0800 (Thu, 28 Jan 2010) $
Revision: $Revision: 21615 $
Description: Contains the code executed before the C/EC++ "main"
function is called. The code is designed to run on any
processor based on the 8051 architecture.
Copyright 2005-2007 Texas Instruments Incorporated. All rights reserved.
IMPORTANT: Your use of this Software is limited to those specific rights
granted under the terms of a software license agreement between the user
who downloaded the software, his/her employer (which must be your employer)
and Texas Instruments Incorporated (the "License"). You may not use this
Software unless you agree to abide by the terms of the License. The License
limits your use, and you acknowledge, that the Software may not be modified,
copied or distributed unless embedded on a Texas Instruments microcontroller
or used solely and exclusively in conjunction with a Texas Instruments radio
frequency transceiver, which is integrated into your product. Other than for
the foregoing purpose, you may not use, reproduce, copy, prepare derivative
works of, modify, distribute, perform, display or sell this Software and/or
its documentation for any purpose.
YOU FURTHER ACKNOWLEDGE AND AGREE THAT THE SOFTWARE AND DOCUMENTATION ARE
PROVIDED “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED,
INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY, TITLE,
NON-INFRINGEMENT AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL
TEXAS INSTRUMENTS OR ITS LICENSORS BE LIABLE OR OBLIGATED UNDER CONTRACT,
NEGLIGENCE, STRICT LIABILITY, CONTRIBUTION, BREACH OF WARRANTY, OR OTHER
LEGAL EQUITABLE THEORY ANY DIRECT OR INDIRECT DAMAGES OR EXPENSES
INCLUDING BUT NOT LIMITED TO ANY INCIDENTAL, SPECIAL, INDIRECT, PUNITIVE
OR CONSEQUENTIAL DAMAGES, LOST PROFITS OR LOST DATA, COST OF PROCUREMENT
OF SUBSTITUTE GOODS, TECHNOLOGY, SERVICES, OR ANY CLAIMS BY THIRD PARTIES
(INCLUDING BUT NOT LIMITED TO ANY DEFENSE THEREOF), OR OTHER SIMILAR COSTS.
Should you have any questions regarding your right to use this Software,
contact Texas Instruments Incorporated at www.TI.com.
**************************************************************************************************/
/******************************************************************************
Copyright 2004-2005 IAR Systems. All rights reserved.
Updated by Chipcon to not clear ?CBANK at init.
******************************************************************************/
#include "iar_common.h"
PROGRAM CSTARTUP
PUBLIC __program_start
EXTERN ?B0
EXTERNS_FOR_ALL_DPTR_SYMBOLS()
REQUIRE ?B0
REQUIRE __call_main
#if (__NUMBER_OF_DPTRS__ > 1)
REQUIRE ?RESET_DPS
#endif
#if (__CORE__ == __CORE_EXTENDED1__)
REQUIRE __call_init_extended1
#endif
; Uncomment this when rom-monitor requires 3 NOPS between statements.
; REQUIRE ?ROM_MONITOR_NOPS
RSEG REGISTERS:NOROOT:DATA
PUBLIC ?REGISTERS
?REGISTERS:
//------------------------------------------------------------------------
// The C stack segment. Should be mapped into internal data RAM
//
// ISTACK: Should be mapped into internal data RAM
// PSTACK: Should be mapped into external data RAM page
// XSTACK: Should be mapped into external data RAM
// EXT_STACK: Should be mapped into external data RAM
//
//------------------------------------------------------------------------
// The C stack is used for LCALL's and temporary storage for
// code generator help-routines (math etc). The stack will be
// located after all other internal RAM variables if the stan-
// dard linking procedure is followed. Note that C interrupt
// routines can double stack size demands.
//
//------------------------------------------------------------------------
RSEG ISTACK:NOROOT:IDATA
PUBLIC ?ISTACK_START
?ISTACK_START:
RSEG PSTACK:NOROOT:XDATA
PUBLIC ?PSTACK_START
?PSTACK_START:
RSEG XSTACK:NOROOT:XDATA
PUBLIC ?XSTACK_START
?XSTACK_START:
RSEG EXT_STACK:NOROOT:XDATA
PUBLIC ?EXT_STACK_START
?EXT_STACK_START:
//------------------------------------------------------------------------
//
// Define reset vector.
//
//------------------------------------------------------------------------
COMMON INTVEC:CODE:ROOT(0)
// The reset vector must be located at address zero, the reset
// vector is located first in the INTVEC segment. This segment
// must thus be located at address zero. Be carefull if using
// assembler sequences located with the ASEG directive, which may
// prevent the INTVEC segment from being located at address zero.
// Not enforcing location at address 0 for boot loader for OAD.
// LIMIT SFB(INTVEC),0,0,"The INTVEC segment must begin at address zero"
?reset_vector:
DB 0x02 ; LJMP
#if defined(START_INIT_IN_FAR)
DB BYTE3(__program_start)
#endif
DB high(__program_start)
DB low(__program_start)
//------------------------------------------------------------------------
//
// Initialize the chip to suit IAR ICC8051 Compiler
//
//------------------------------------------------------------------------
RSEG CSTART:CODE:ROOT
EXTERN ?REGISTER_BANK
REQUIRE ?ISTACK_START
REQUIRE ?REGISTERS
REQUIRE ?reset_vector
__program_start:
MOV PSW,#(?REGISTER_BANK << 3)
//------------------------------------------------------------------------
//
// Reset of bank registers and stack pointers
// ==========================================
//
// ?RESET_SP: Resets the IDATA stack pointer
// ?RESET_ESP: Resets the extended stack pointer
// ?RESET_PSP: Resets the PDATA stack pointer
// ?RESET_XSP: Resets the XDATA stack pointer
//
// ?RESET_CODE_BANK: Resets the current code bank register
// ?RESET_PDATA_BANK: Resets the high byte of PDATA page register
//
// ?RESET_DPS: Resets the DPTR selector (point at DPTR0)
//
//------------------------------------------------------------------------
//------------------------------------------------------------------------
//
// Reset idata or extended stack pointer
// extended stack pointer if the extended stack is used
// otherwise, the ordinary stack pointer
//
//------------------------------------------------------------------------
#if (defined(__EXTENDED_STACK__) )
//
// Reset extended stack pointer
//
PUBLIC ?RESET_ESP
REQUIRE ?EXT_STACK_START
EXTERN ?ESP
?RESET_ESP:
MOV SP,#low(sfb(EXT_STACK))
MOV ?ESP,#high(sfb(EXT_STACK))
#else
//
// Reset idata stack pointer
//
PUBLIC ?RESET_SP
REQUIRE ?ISTACK_START
?RESET_SP:
MOV SP,#SFB(ISTACK)
#endif
//------------------------------------------------------------------------
//
// Reset pdata stack pointer
//
//------------------------------------------------------------------------
RSEG CSTART:CODE:NOROOT
PUBLIC ?RESET_PSP
EXTERN ?PSP
REQUIRE ?PSTACK_START
REQUIRE ?RESET_PDATA_BANK
EXTERN ?PSTACK
?RESET_PSP:
MOV ?PSP,#low(sfe(PSTACK))
//------------------------------------------------------------------------
//
// Reset xdata stack pointer
//
//------------------------------------------------------------------------
RSEG CSTART:CODE:NOROOT
PUBLIC ?RESET_XSP
EXTERN ?XSP
REQUIRE ?XSTACK_START
EXTERN ?XSTACK
?RESET_XSP:
MOV ?XSP,#low(sfe(XSTACK))
MOV ?XSP+1,#high(sfe(XSTACK))
//------------------------------------------------------------------------
//
// Reset code bank
//
//------------------------------------------------------------------------
#if ( (__CODE_MODEL__ == __CM_BANKED__) || ( __CODE_MODEL__ == __CM_NEAR__ ) )
RSEG CSTART:CODE:NOROOT
PUBLIC ?RESET_CODE_BANK
EXTERN ?CBANK
?RESET_CODE_BANK:
NOP
// MOV ?CBANK,#0x00
#endif
//------------------------------------------------------------------------
//
// Reset pdata page
//
//------------------------------------------------------------------------
RSEG CSTART:CODE:NOROOT
PUBLIC ?RESET_PDATA_BANK
EXTERN ?PBANK
EXTERN ?PBANK_NUMBER
?RESET_PDATA_BANK:
MOV ?PBANK,#?PBANK_NUMBER
#if (defined ( __EXTENDED_DPTR__))
EXTERN ?PBANK_EXT
?RESET_PDATA_BANK_EXT:
MOV ?PBANK_EXT,#0x00
#endif
//------------------------------------------------------------------------
//
// Reset data pointer select register
//
//------------------------------------------------------------------------
#if (__NUMBER_OF_DPTRS__ > 1)
RSEG CSTART:CODE:NOROOT
PUBLIC ?RESET_DPS
EXTERN ?DPS
?RESET_DPS:
MOV ?DPS,#0x00
#endif
//------------------------------------------------------------------------
//
// Initialize the extended1 core
//
//------------------------------------------------------------------------
#if (__CORE__ == __CORE_EXTENDED1__)
REQUIRE __call_init_extended1
RSEG CSTART:CODE:NOROOT
PUBLIC __call_init_extended1
EXTERN __init_extended1
__call_init_extended1:
DB 0x12 ; LCALL
#if defined(START_INIT_IN_FAR)
DB BYTE3(__init_extended1)
#endif
DB high(__init_extended1)
DB low(__init_extended1)
#endif
//------------------------------------------------------------------------
//
// Jump to the code that performs the rest of the system initialization
// before calling main().
//
//------------------------------------------------------------------------
RSEG CSTART:CODE:NOROOT
EXTERN ?cmain
__call_main:
LJMP ?cmain
ENDMOD
;----------------------------------------------------------------;
; Virtual registers ;
; ================= ;
; Below is some segment needed for the IAR ICC C/EC++ compiler ;
; ;
; BREG : A segment for 8 bit registers for use by the compiler. ;
; ?B0 is the first register. ;
; VREG : Segement that holds up to 32 virtual registers for ;
; use by the compiler. ?V0 is the first register. ;
; PSP : Segment containing the PDATA stack pointer (?PSP) ;
; XSP : Segment containing the XDATA stack pointer (?XSP) ;
; ;
;----------------------------------------------------------------;
; NOTE: The XLINK varialbe _NR_OF_VIRTUAL_REGISTERS must be ;
; defined to set the size for the VREG segment. ;
;----------------------------------------------------------------;
MODULE VIRTUAL_REGISTERS
PUBLIC ?B0
PUBLIC ?V0
PUBLIC ?PSP
PUBLIC ?XSP
RSEG BREG:BIT:NOROOT
?B0:
DS 8
RSEG VREG:DATA:NOROOT
EXTERN _NR_OF_VIRTUAL_REGISTERS
?V0:
DS 0
RSEG PSP:DATA:NOROOT
EXTERN ?RESET_PSP
REQUIRE ?RESET_PSP
?PSP:
DS 1
RSEG XSP:DATA:NOROOT
EXTERN ?RESET_XSP
REQUIRE ?RESET_XSP
?XSP:
DS 2
ENDMOD ; VIRTUAL_REGISTERS
;----------------------------------------------------------------;
; Register banks ;
; ================= ;
; Below is some segment needed for the IAR ICC C/EC++ compiler ;
; ;
; The register banks will only be included if the #pragma ;
; register_bank is used for the corresponding register bank ;
; ;
;----------------------------------------------------------------;
MODULE REGISTER_BANK0
PUBLIC __REG_BANK_0
ASEGN __REG_BANK0:DATA,0x00
__REG_BANK_0:
DS 8
ENDMOD
MODULE REGISTER_BANK1
PUBLIC __REG_BANK_1
ASEGN __REG_BANK1:DATA,0x08
__REG_BANK_1:
DS 8
ENDMOD
MODULE REGISTER_BANK2
PUBLIC __REG_BANK_2
ASEGN __REG_BANK2:DATA,0x10
__REG_BANK_2:
DS 8
ENDMOD
MODULE REGISTER_BANK3
PUBLIC __REG_BANK_3
ASEGN __REG_BANK3:DATA,0x18
__REG_BANK_3:
DS 8
ENDMOD ; REGISTER_BANK3
END
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