cstartup_sam7.lst

AT91SAM7X256底层驱动源码

##############################################################################
#                                                                            #
# IAR ARM ANSI C/C++ Compiler V4.30A/W32 KICKSTART     01/Nov/2005  09:00:27 #
# Copyright 1999-2005 IAR Systems. All rights reserved.                      #
#                                                                            #
#    Cpu mode        =  thumb                                                #
#    Endian          =  little                                               #
#    Stack alignment =  4                                                    #
#    Source file     =  E:\SAM7X\AT91_SAM7X256-IAR\AT91SAM7X256-BasicAES-IAR #
#                       430A-1_2\BasicAES-SAM7X\compil\srcIAR\Cstartup_SAM7. #
#                       c                                                    #
#    Command line    =  E:\SAM7X\AT91_SAM7X256-IAR\AT91SAM7X256-BasicAES-IAR #
#                       430A-1_2\BasicAES-SAM7X\compil\srcIAR\Cstartup_SAM7. #
#                       c -lC E:\SAM7X\AT91_SAM7X256-IAR\AT91SAM7X256-BasicA #
#                       ES-IAR430A-1_2\BasicAES-SAM7X\compil\Binary\List\    #
#                       -o E:\SAM7X\AT91_SAM7X256-IAR\AT91SAM7X256-BasicAES- #
#                       IAR430A-1_2\BasicAES-SAM7X\compil\Binary\Obj\ -z9    #
#                       --debug --cpu_mode thumb --endian little --cpu       #
#                       ARM7TDMI --stack_align 4 -e --fpu None               #
#                       --dlib_config "D:\Program Files\IAR                  #
#                       Systems\Embedded Workbench 4.0                       #
#                       Kickstart\arm\LIB\dl4tptnnl8f.h" -I                  #
#                       E:\SAM7X\AT91_SAM7X256-IAR\AT91SAM7X256-BasicAES-IAR #
#                       430A-1_2\BasicAES-SAM7X\compil\srcIAR\ -I            #
#                       E:\SAM7X\AT91_SAM7X256-IAR\AT91SAM7X256-BasicAES-IAR #
#                       430A-1_2\BasicAES-SAM7X\compil\..\src\ -I            #
#                       E:\SAM7X\AT91_SAM7X256-IAR\AT91SAM7X256-BasicAES-IAR #
#                       430A-1_2\BasicAES-SAM7X\compil\..\..\ -I             #
#                       "D:\Program Files\IAR Systems\Embedded Workbench     #
#                       4.0 Kickstart\arm\INC\"                              #
#    List file       =  E:\SAM7X\AT91_SAM7X256-IAR\AT91SAM7X256-BasicAES-IAR #
#                       430A-1_2\BasicAES-SAM7X\compil\Binary\List\Cstartup_ #
#                       SAM7.lst                                             #
#    Object file     =  E:\SAM7X\AT91_SAM7X256-IAR\AT91SAM7X256-BasicAES-IAR #
#                       430A-1_2\BasicAES-SAM7X\compil\Binary\Obj\Cstartup_S #
#                       AM7.r79                                              #
#                                                                            #
#                                                                            #
##############################################################################

E:\SAM7X\AT91_SAM7X256-IAR\AT91SAM7X256-BasicAES-IAR430A-1_2\BasicAES-SAM7X\compil\srcIAR\Cstartup_SAM7.c
      1          //  ----------------------------------------------------------------------------
      2          //          ATMEL Microcontroller Software Support  -  ROUSSET  -
      3          //  ----------------------------------------------------------------------------
      4          //  DISCLAIMER:  THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
      5          //  IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
      6          //  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
      7          //  DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
      8          //  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
      9          //  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
     10          //  OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
     11          //  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
     12          //  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
     13          //  EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     14          //  ----------------------------------------------------------------------------
     15          // File Name           : Cstartup_SAM7.c
     16          // Object              : Low level initialisations written in C for IAR Tools
     17          // Creation            : FBr   01-Sep-2005
     18          // ----------------------------------------------------------------------------
     19          
     20          #include "project.h"
     21          
     22          // The following functions must be write in ARM mode this function called directly by exception vector
     23          extern void AT91F_Spurious_handler(void);
     24          extern void AT91F_Default_IRQ_handler(void);
     25          extern void AT91F_Default_FIQ_handler(void);
     26          
     27          //*----------------------------------------------------------------------------
     28          //* \fn    AT91F_LowLevelInit
     29          //* \brief This function performs very low level HW initialization
     30          //*        this function can use a Stack, depending the compilation
     31          //*        optimization mode
     32          //*----------------------------------------------------------------------------

   \                                 In segment CODE, align 4, keep-with-next
     33          void AT91F_LowLevelInit(void)
     34          {
   \                     AT91F_LowLevelInit:
   \   00000000   10B5               PUSH        {R4,LR}
     35              unsigned char i;
     36              /////////////////////////////////////////////////////////////////////////////////////////////////////
     37              // EFC Init
     38              /////////////////////////////////////////////////////////////////////////////////////////////////////
     39              AT91C_BASE_MC->MC_FMR = AT91C_MC_FWS_1FWS;      // 1 Wait State necessary to work at 48MHz
   \   00000002   9F20               MOV         R0,#+0x9F
   \   00000004   C043               MVN         R0,R0              ;; #-160
   \   00000006   8021               MOV         R1,#+0x80
   \   00000008   4900               LSL         R1,R1,#+0x1        ;; #+0x100
   \   0000000A   0160               STR         R1,[R0, #+0]
     40          
     41              /////////////////////////////////////////////////////////////////////////////////////////////////////
     42              // Init PMC Step 1. Enable Main Oscillator
     43              // Main Oscillator startup time is board specific:
     44              // Main Oscillator Startup Time worst case (3MHz) corresponds to 15ms (0x40 for AT91C_CKGR_OSCOUNT field)
     45              /////////////////////////////////////////////////////////////////////////////////////////////////////
     46              AT91C_BASE_PMC->PMC_MOR = (( AT91C_CKGR_OSCOUNT & (0x40 <<8) | AT91C_CKGR_MOSCEN ));
   \   0000000C   1A48               LDR         R0,??AT91F_LowLevelInit_0  ;; 0xfffffc20
   \   0000000E   1B49               LDR         R1,??AT91F_LowLevelInit_0+0x4  ;; 0x4001
   \   00000010   0160               STR         R1,[R0, #+0]
   \   00000012   1B48               LDR         R0,??AT91F_LowLevelInit_0+0x8  ;; 0xfffffc68
     47              // Wait Main Oscillator stabilization
     48              while(!(AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MOSCS));
   \                     ??AT91F_LowLevelInit_1:
   \   00000014   0168               LDR         R1,[R0, #+0]
   \   00000016   C907               LSL         R1,R1,#+0x1F
   \   00000018   FCD5               BPL         ??AT91F_LowLevelInit_1
     49          
     50              /////////////////////////////////////////////////////////////////////////////////////////////////////
     51              // Init PMC Step 2.
     52              // Set PLL to 96MHz (96,109MHz) and UDP Clock to 48MHz
     53              // PLL Startup time depends on PLL RC filter: worst case is choosen
     54              // UDP Clock (48,058MHz) is compliant with the Universal Serial Bus Specification (+/- 0.25% for full speed)
     55              /////////////////////////////////////////////////////////////////////////////////////////////////////
     56              AT91C_BASE_PMC->PMC_PLLR = AT91C_CKGR_USBDIV_1 | AT91C_CKGR_OUT_0 | AT91C_CKGR_PLLCOUNT |
     57                (AT91C_CKGR_MUL & (72 << 16)) | (AT91C_CKGR_DIV & 14);
   \   0000001A   1A49               LDR         R1,??AT91F_LowLevelInit_0+0xC  ;; 0xfffffc2c
   \   0000001C   1A4A               LDR         R2,??AT91F_LowLevelInit_0+0x10  ;; 0x10483f0e
   \   0000001E   0A60               STR         R2,[R1, #+0]
     58              // Wait for PLL stabilization
     59              while( !(AT91C_BASE_PMC->PMC_SR & AT91C_PMC_LOCK) );
   \                     ??AT91F_LowLevelInit_2: