pit.lst

本代bootloader通过usb下载代码首先存放在sdram中

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#                                                                             #
#                                                       28/Apr/2009  09:28:24 #
# IAR ARM ANSI C/C++ Compiler V5.11.0.20622/W32 EVALUATION                    #
# Copyright 1999-2007 IAR Systems. All rights reserved.                       #
#                                                                             #
#    Cpu mode     =  arm                                                      #
#    Endian       =  little                                                   #
#    Source file  =  E:\workplace\bootloaderOK\at91lib\peripherals\pit\pit.c  #
#    Command line =  E:\workplace\bootloaderOK\at91lib\peripherals\pit\pit.c  #
#                    -D at91sam7se512 -D flash -D TRACE_LEVEL=4 -lC           #
#                    E:\workplace\bootloaderOK\at91sam7se-ek\basic-dataflash- #
#                    project\ewp\at91sam7se512_flash\List\ --remarks          #
#                    --diag_suppress Pe826,Pe1375 -o                          #
#                    E:\workplace\bootloaderOK\at91sam7se-ek\basic-dataflash- #
#                    project\ewp\at91sam7se512_flash\Obj\ --no_cse            #
#                    --no_unroll --no_inline --no_code_motion --no_tbaa       #
#                    --no_clustering --no_scheduling --debug --endian little  #
#                    --cpu ARM7TDMI -e --fpu None --dlib_config "D:\Program   #
#                    Files\arm\ARM\INC\DLib_Config_Full.h" -I                 #
#                    E:\workplace\bootloaderOK\at91sam7se-ek\basic-dataflash- #
#                    project\ewp\..\..\..\at91lib/peripherals\ -I             #
#                    E:\workplace\bootloaderOK\at91sam7se-ek\basic-dataflash- #
#                    project\ewp\..\..\..\at91lib\ -I                         #
#                    E:\workplace\bootloaderOK\at91sam7se-ek\basic-dataflash- #
#                    project\ewp\..\..\..\at91lib/memories\ -I                #
#                    E:\workplace\bootloaderOK\at91sam7se-ek\basic-dataflash- #
#                    project\ewp\..\..\..\at91lib/boards/at91sam7se-ek\ -I    #
#                    "D:\Program Files\arm\ARM\INC\" --interwork --cpu_mode   #
#                    arm -Oh                                                  #
#    List file    =  E:\workplace\bootloaderOK\at91sam7se-ek\basic-dataflash- #
#                    project\ewp\at91sam7se512_flash\List\pit.lst             #
#    Object file  =  E:\workplace\bootloaderOK\at91sam7se-ek\basic-dataflash- #
#                    project\ewp\at91sam7se512_flash\Obj\pit.o                #
#                                                                             #
#                                                                             #
###############################################################################

E:\workplace\bootloaderOK\at91lib\peripherals\pit\pit.c
      1          /* ----------------------------------------------------------------------------
      2           *         ATMEL Microcontroller Software Support 
      3           * ----------------------------------------------------------------------------
      4           * Copyright (c) 2008, Atmel Corporation
      5           *
      6           * All rights reserved.
      7           *
      8           * Redistribution and use in source and binary forms, with or without
      9           * modification, are permitted provided that the following conditions are met:
     10           *
     11           * - Redistributions of source code must retain the above copyright notice,
     12           * this list of conditions and the disclaimer below.
     13           *
     14           * Atmel's name may not be used to endorse or promote products derived from
     15           * this software without specific prior written permission.
     16           *
     17           * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
     18           * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     19           * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
     20           * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
     21           * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     22           * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
     23           * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
     24           * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
     25           * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
     26           * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27           * ----------------------------------------------------------------------------
     28           */
     29          
     30          //------------------------------------------------------------------------------
     31          //         Headers
     32          //------------------------------------------------------------------------------
     33          
     34          #include "pit.h"
     35          #include <board.h>
     36          
     37          //------------------------------------------------------------------------------
     38          //         Global functions
     39          //------------------------------------------------------------------------------
     40          
     41          //------------------------------------------------------------------------------
     42          /// Initialize the Periodic Interval Timer to generate a tick at the specified
     43          /// period, given the current master clock frequency.
     44          /// \param period  Period in 祍econd.
     45          /// \param pit_frequency  Master clock frequency in MHz.
     46          //------------------------------------------------------------------------------

   \                                 In section .text, align 4, keep-with-next
     47          void PIT_Init(unsigned int period, unsigned int pit_frequency)
     48          {
     49              AT91C_BASE_PITC->PITC_PIMR = period? (period * pit_frequency + 8) >> 4 : 0;
   \                     PIT_Init:
   \   00000000   000050E3           CMP      R0,#+0
   \   00000004   91000010           MULNE    R0,R1,R0
   \   00000008   08008012           ADDNE    R0,R0,#+8
   \   0000000C   2002A011           LSRNE    R0,R0,#+4
   \   00000010   CF10E0E3           MVN      R1,#+207
   \   00000014   801FC1E3           BIC      R1,R1,#0x200
   \   00000018   000081E5           STR      R0,[R1, #+0]
     50              AT91C_BASE_PITC->PITC_PIMR |= AT91C_PITC_PITEN;
   \   0000001C   000091E5           LDR      R0,[R1, #+0]
   \   00000020   400780E3           ORR      R0,R0,#0x1000000
   \   00000024   ........           B        ??Subroutine0_0
     51          }

   \                                 In section .text, align 4, keep-with-next
   \                     ?Subroutine0:
   \   00000000   CF10E0E3           MVN      R1,#+207
   \   00000004   801FC1E3           BIC      R1,R1,#0x200
   \                     ??Subroutine0_0:
   \   00000008   000081E5           STR      R0,[R1, #+0]
   \   0000000C   1EFF2FE1           BX       LR               ;; return
     52          
     53          //------------------------------------------------------------------------------
     54          /// Set the Periodic Interval Value of the PIT.
     55          /// \param piv  PIV value to set.
     56          //------------------------------------------------------------------------------

   \                                 In section .text, align 4, keep-with-next
     57          void PIT_SetPIV(unsigned int piv)
     58          {
     59              AT91C_BASE_PITC->PITC_PIMR = (AT91C_BASE_PITC->PITC_PIMR & AT91C_PITC_PIV)
     60                                           | piv;
   \                     PIT_SetPIV:
   \   00000000   CF10E0E3           MVN      R1,#+207
   \   00000004   801FC1E3           BIC      R1,R1,#0x200
   \   00000008   001091E5           LDR      R1,[R1, #+0]
   \   0000000C   0116A0E1           LSL      R1,R1,#+12
   \   00000010   210680E1           ORR      R0,R0,R1, LSR #+12
   \   00000014   ........           B        ?Subroutine0
     61          }
     62          
     63          //------------------------------------------------------------------------------
     64          /// Enables the PIT if this is not already the case.
     65          //------------------------------------------------------------------------------

   \                                 In section .text, align 4, keep-with-next
     66          void PIT_Enable(void)
     67          {
     68              AT91C_BASE_PITC->PITC_PIMR |= AT91C_PITC_PITEN;
   \                     PIT_Enable:
   \   00000000   CF00E0E3           MVN      R0,#+207
   \   00000004   800FC0E3           BIC      R0,R0,#0x200