cstartup.s

有关ATMEL AT91系列CPU的驱动函数库

#------------------------------------------------------------------------------
#-         ATMEL Microcontroller Software Support  -  ROUSSET  -
#------------------------------------------------------------------------------
# The software is delivered "AS IS" without warranty or condition of any
# kind, either express, implied or statutory. This includes without
# limitation any warranty or condition with respect to merchantability or
# fitness for any particular purpose, or against the infringements of
# intellectual property rights of others.
#-----------------------------------------------------------------------------
#- File source          : cstartup.s
#- Object               : C startup choice
#-
#- 1.0 30/10/00 JPP     : Creation
#------------------------------------------------------------------------------
                .INCLUDE     "eb63.inc"

#------------------------------------------------------------------------------
#               Angel Rom Monitor Method
#- Preprocessor Flag can be set : SEMIHOSTING
#------------------------------------------------------------------------------
                .ifdef AT91_DEBUG_ANGEL       	/* { */
                .INCLUDE     "../cstartup_angel.s"
#----------------------------------------------------------------------
# Call __low_level_init to perform initialization before initializing
# AIC and calling main.
# Diasable all peripherial clock
# The peripheral clocks are automatically Diasable after a reset.
#----------------------------------------------------------------------
__low_level_init:
                mov         pc,r14              /* Return */

                .endif                          /* AT91_DEBUG_ANGEL */

#------------------------------------------------------------------------------
#               ICE or Sram Method
#- Preprocessor Flag can be set : SEMIHOSTING
#------------------------------------------------------------------------------

                .ifdef  AT91_DEBUG_ICE         	/* { */
                .INCLUDE     "../cstartup_ice.s"
#----------------------------------------------------------------------
# Call __low_level_init to perform initialization before initializing
# AIC and calling main.
# Diasable all peripherial clock
#----------------------------------------------------------------------
__low_level_init:
                mvn         r0,#0               /* R0<- 0xFFFFFFFF */
                ldr         r1,=PMC_BASE        /* Get Power saving configuartion */
                str         r0,[r1,#PMC_PCDR]   /* Diasable all peripherial clock */
                mov         pc,r14              /* Return */

                .endif                          /* AT91_DEBUG_ICE  */

#------------------------------------------------------------------------------
#               Flash Method
#------------------------------------------------------------------------------

                .ifdef AT91_DEBUG_NONE        /* { */
                .INCLUDE     "../cstartup_flash.s"
#----------------------------------------------------------------------
# Call __low_level_init to perform initialization before initializing
# AIC and calling main.
# Diasable all peripherial clock
#----------------------------------------------------------------------
__low_level_init:
                mov         pc,r14              /* Return */
                .endif                     		/* AT91_DEBUG_NONE } */

 

#        END