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     "targets/40816/40816.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
#----------------------------------------------------------------------
__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.
# Enable all peripherial clock
# The peripheral clocks are automatically enabled after a reset.
#----------------------------------------------------------------------
__low_level_init:
                mvn         r0,#0               	/* R0<- 0xFFFFFFFF */
                ldr         r1,=PS_BASE         	/* Get Power saving configuartion */
                str         r0,[r1, #PS_PCER]  	 	/* Enable 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