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/**************************************************************************
* arch/z16/src/z16f/z16f_head.S
* Z16F Reset Entry Point
*
* Copyright (C) 2008 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
**************************************************************************/
/**************************************************************************
* Included Files
**************************************************************************/
#include <nuttx/config.h>
/**************************************************************************
* External References / External Definitions
**************************************************************************/
xref _z16f_lowinit:EROM
xref _os_start:EROM
xdef _default_handler
xdef _reset
/**************************************************************************
* Flash Option Byte Setup
**************************************************************************/
define FOPTIONSEG, SPACE=ROM, ORG=0
segment FOPTIONSEG
db %FF
db %FF
db %FF
db %FF
/**************************************************************************
* vectors
**************************************************************************/
vector RESET=_reset
vector SYSEXC=_default_handler
vector TIMER2=_default_handler
vector TIMER1=_default_handler
vector TIMER0=_default_handler
vector UART0_RX=_default_handler
vector UART0_TX=_default_handler
vector I2C=_default_handler
vector SPI=_default_handler
vector ADC=_default_handler
vector P7AD=_default_handler
vector P6AD=_default_handler
vector P5AD=_default_handler
vector P4AD=_default_handler
vector P3AD=_default_handler
vector P2AD=_default_handler
vector P1AD=_default_handler
vector P0AD=_default_handler
vector PWM_TIMER=_default_handler
vector UART1_RX=_default_handler
vector UART1_TX=_default_handler
vector PWM_FAULT=_default_handler
vector C3=_default_handler
vector C2=_default_handler
vector C1=_default_handler
vector C0=_default_handler
/**************************************************************************
* Equates
**************************************************************************/
STACK_TOP equ %FFC000
/**************************************************************************
* Data Allocation
**************************************************************************/
/**************************************************************************
* Code
**************************************************************************/
define CODESEG, SPACE=EROM
segment CODESEG
/**************************************************************************
* Name: _reset
*
* Description:
* Reset entry point
*
**************************************************************************/
_reset:
ld sp, #STACK_TOP /* Set Stack Pointer */
call _z16f_lowinit /* call _z16f_lowinit */
call _os_start /* Start the operating system */
_halted: /* _os_start() should not return */
halt
jp _halted
/**************************************************************************
* Name: _default_handler
*
* Description:
* This is where interrupts will go if they have not yet been intialize
*
**************************************************************************/
_default_handler:
nop
iret
end
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