eclipse软件仿真操作

1.编写程序代码(以SDRAM为例)

1.1 编写head.s汇编文件

.equ SDRAM_BASE,   0x30000000
.equ MEM_CTL_BASE, 0x48000000

.text
.global _start
_start:
    bl disable_watch_dog
    bl memsetup
    bl copy_steppingstone_to_sdram
    ldr pc,=on_sdram
on_sdram:
    ldr sp,=0x34000000
    bl main
halt_loop:
    b halt_loop

disable_watch_dog:
    mov r1,#0x53000000
    mov r2,#0x00
    str r2,[r1]
    mov pc,lr

copy_steppingstone_to_sdram:
    mov r1,#0x00
    ldr r2,=SDRAM_BASE
    mov r3,#4*1024
1:
    ldr r4,[r1],#4
    str r4,[r2],#4
    cmp r1,r3
    bne 1b
    mov pc,lr

memsetup:
    mov r1,#MEM_CTL_BASE
    adrl r2,mem_cfg_val
    add r3,r1,#52
1:
    ldr r4,[r2],#4
    ldr r4,[r1],#4
    cmp r1,r3
    bne 1b
    mov pc,lr

.align 4
mem_cfg_val:
    .long 0x22011110 @BWSCON
    .long 0x00000700 @BANKCON0
    .long 0x00000700 @BANKCON1
    .long 0x00000700 @BANKCON2
    .long 0x00000700 @BANKCON3
    .long 0x00000700 @BANKCON4
    .long 0x00000700 @BANKCON5
    .long 0x00018005 @BANKCON6
    .long 0x00018005 @BANKCON7
    .long 0x008C07A3 @REFRESH
    .long 0x000000B1 @BANKSIZE
    .long 0x00000030 @MRSRB6
    .long 0x00000030 @MRSRB7

1.2 编写led.c C程序文件

#define GPBCON   *((volatile unsigned long*)0x56000010)
#define GPBDAT   *((volatile unsigned long*)0x56000014)

int main()
{
    GPBCON=0x00000400;
    GPBDAT=0x00000000;
    
    return 0;
}

1.3 编写makefile文件

all:head.o led.o
    arm-linux-ld -Ttext 0x30000000 led.o head.o -o sdram.elf
    arm-linux-objcopy -O binary -S sdram.elf sdram.bin
    arm-linux-objdump -D -m arm sdram.elf > sdram.dis
head.o:head.s
    arm-linux-gcc -g -c head.s
led.o:led.c
    arm-linux-gcc -g -c led.c
clean:
    rm -f sdram.dis sdram.bin sdram.elf *.o

注：必须用all否则编译会报错

2.编译

  打开eclipse->project->build all 没有错误可以进行下一步

3.连接JLink

dongry@d-linux:~$ cd arm-tools
dongry@d-linux:~/arm-tools$ ls
ARM-tools
dongry@d-linux:~/arm-tools$ cd ARM-tools
dongry@d-linux:~/arm-tools/ARM-tools$ ls
arm-linux-gcc-4.3.2.tgz  eclipse-cpp-helios-SR2-linux-gtk.tar.gz
arm-linux-gdb-7.5        JLink_Linux_V434a
dnw                      JLink_Linux_V434a.tgz
dnw_usb.ko
dongry@d-linux:~/arm-tools/ARM-tools$ cd JLink_Linux_V434a
dongry@d-linux:~/arm-tools/ARM-tools/JLink_Linux_V434a$ ls
45-jlink.rules  JLinkGDBServer    libjlinkarm.so.4.34.1  start
JLinkExe        libjlinkarm.so.4  README
dongry@d-linux:~/arm-tools/ARM-tools/JLink_Linux_V434a$ ./JLinkGDBServer  //运行JLink
SEGGER J-Link GDB Server V4.34a

JLinkARM.dll V4.34a (DLL compiled Aug 31 2011 11:51:40)

4.配置eclipse

  虫子->debug configureation->双击Zylin Embedded debug(Native)->单击New_configuration

  配置1：main(添加.elf文件)

  配置2：debugger

  配置3：command(复制粘贴初始化脚本)