ARM_S3C44B0X_VxWorks_底层_BSP开发

1、arm s3c44b0x vxworks 底层 bsp 开发yeahkai2006.08.31主要内容arm 体系结构 vxworks bsp bsp 开发过程调试经验开发工具hitool for armtornado 2.2 for armads 1.2 / gnu tool chain 串口调试助手ida 反编译工具开发文档 samsung s3c44b0x datasheet micetek ev44b0-ii 开发板硬件电路图tornado 帮助文档网卡 flash 、 ram 等 datasheet参考 bsp ： wind river sbc arm7 bsp for samsun

2、gs ks32c50100 (s3c4510b)amine 思创黄金开发板 s3c44b0x vxworks bsp 移植笔记什么是 bspbsp board support package为vxworks提供与硬件环境的主要接口bsp 职责:上电硬件初始化为vxworks访问硬件提供支持在vxworks中集成与硬件相关以及硬件无关的软件bsp构成源文件、头文件、makefile文件派生文件二进制驱动模块文件vxworks bsp目录结构寄存器与主板配置: s3c44b0x.h wrsbcarm.h 时钟：sngks32ctimer.c中断: sngks32cintrctl.c串口：sysse

3、rial.c sngks32csio.c 系统库函数: syslib.c启动与初始化rominit.s （rominit()函数，上电后运行的第一个函数）bootinit.c (romstart()，完成从rom到ram的复制) 等网络:confignet.h lan91c111.c flash及tffs文件系统： systffs.c mbm29lv160te.c硬件环境ev44b0-ii 功能模块地址分配samsung 8m sdram8 段 led （ 0x6000000h ）pdiusbd12lan91c113 10m/100m 网卡 s3c44b0x 内部寄存器mbm29lv160te

4、70 16m(1m*16)bit如何入手从最简单的程序开始跑马灯共阳极地址 0x6000000 mov r0,#0x600000 mov r1,#leddata str r1,r0; led_roll.s; roll led arm asm code for ads 1.2area led, code ;str led addr to r0ldr r0, =0x06000000loop;led show 0ldr r1, =0x12000000 str r1, r0; delay for some time ldr r1, =0x0000ffffdelay1subr1, r1, #1cmp r

5、1, #0bnedelay1;led offldr r1, =0xff000000str r1, r0;delay for some time ldr r1, =0x0000ffffdelay2subr1, r1, #1cmpr1, #0bnedelay2b loopendmakefile# makefile - test led project and show how to use makefile#*# display a hint of how to make first targetall:echo hint: you can type make led to build first

6、 target #*# compile and link led_out.s, then convert .axf - .bin file led:armasm led_roll.s -o led_roll.oarmlink -ro-base 0x0 -entry 0x0 led_roll.o -o led_roll.axf fromelf led_roll.axf -bin -output led_roll.bin#*# clean up all temp file except source file clean:rm -f *.o rm -f *.axf rm -f *.bin rm -

7、f *.elfmakefile 使用更详细的makefilerules说明请参考相关文档在 ads 里开发 arm 程序用 hitool 烧写入 flash单步调试逐渐深入arm 系统寄存器配置配置目的寄存器设置值禁止看门狗s3c44b0xwtcon0禁止中断s3c44b0x_intmsk0x07ffffff等待pll稳定时间 sbcarm7locktime0xffffin=10mhz fout=66mhzsbcarm7pllcon(m_div12)+(p_divfout = (8+ m_div)*fout/(2+p_div)*24)+s_div) pllset.exe所有单元时钟使能sbca

8、rm7clkcon0x7ff8存储器控制器 13个寄存器 stmia r0, r1-r13存储器控制器配置rom and ram configurationldr r0, =smrdataldmia r0, r1-r13ldr r0, =0x01c80000 ; bwscon addressstmia r0, r1-r13smrdata datadcd 0x11110090 ; bwscon;bank0=om1:0 bank1,47=16bit bank2,3=8bitdcd 0x00000600 ; gcs0;romdcd 0x00007ffc ; gcs1;lan91c113dcd 0x0

9、0007ffc ; gcs2;usbdcd 0x00007ffc ; gcs3;leddcd 0x00007ffc ; gcs4dcd 0x00007ffc ; gcs5dcd 0x00018000; gcs6, sdram(trcd=2,scan=8)dcd 0x00018000 ; gcs7,sdram(trcd=2,scan=8)dcd 0x00860000 + 1019 ; refresh(refen=1, trefmd=0, trp=2, trc=5, tchr=3,refcnt = 2048 + 1 - mclk(mhz) * 15.6*/)dcd 0x16 ;sclk power

10、 mode, bank6/7 memory map, 8mb/8mbdcd 0x20 ; mrsr 6(cl=2)dcd 0x20 ; mrsr 7(cl=2)开发顺序指导1.最基本的vxworks运行环境时钟、中断、串口2.修改makefile与config.h，不要牵涉过多的外围硬件3.依照datasheet定义cpu寄存器及系统配置参数头文件4.*从rominit开始按照vxworks启动顺序进行修改5.*修改时钟、中断、串口6.在tsfs加载启动后,在vxworks环境中调试其它硬件makefilecpu tool= armarch4= diabconfig_all = $(tgt_d

11、ir)configmicetek_s3c44b0xalltarget_dir = micetek_s3c44b0xvendor board= ioe_no1= s3c44b0xrom_text_adrs = 00000000 # rom entry addressrom_warm_adrs= 00000004 # rom warm entry addressrom_size = 00080000 # number of bytes of rom spaceram_low_adrs= 0c001000 #ram text/data address(bootrom)ram_high_adrs= 0

12、c500000 #ram text/data address(bootrom)mach_extra=#mach_extra= mbm29lv160te.o lan91c111end.oconfig.h#define default_boot_line tsfs(0,0) host:vxworks h=09 tn=micetek#define console_tty0#define console_baud_rate 38400#define include_tsfs_boot#define wdb_comm_type wdb_comm_serial#define wdb_

13、tty_baud38400#define wdb_tty_channel1#define wdb_tty_dev_name/tyco/1#undef include_flash #undef include_lcd #undef include_led #undef include_network #undef include_endvxworks启动顺序几个映像的概念vxworksvxworksbootimageimage(boot code)loadable imagesvxworksrom images“burned” intoram rom-based imagesrom or loa

14、ded- compressed/uncompressed. rom-resident o flash.vxwork启动顺序（1）与vxworks映像类型相关上电后最初的初始化步骤都是相同同的，与vxworks映像类型无关上电后，处理器跳到rom或flash中的启动代码入口启动代码完成：禁止中断配置目标机存储器装载适当的vxworks映像数据段运行初始化代码，使目标机处于静止状态vxwork启动顺序（2）loadable vxworks image bootstrap code executes and loads text and data segments of boot

15、 code (from rom or flash) into ram.scenarios are: boot code compressed - decompression during copy boot code uncompressed - copy boot code is rom-resident - copy data segment only boot program executes and loads vxworks image into ram. jumps to vxworks load point. system initialization code statical

16、ly linked into loaded vxworks image executes and completes initialization.启动过程图示vxworks system memory layout (arm)启动各步骤对应的文件非压缩压缩基本模块的编写时钟中断串口使用tsfs方式启动vxworks为后续硬件添加支持网卡实现网络下载与调试flashtffs文件系统，vxworks存储，cfiled键盘lcdbsp添加对led的支持config.h#define include_ledsysled.c sysled.c完成led的驱动接口#define led_address

17、0x06000000extern void led_display(unsigned char data);syslib.c#ifdef include_led #include “sysled.c” #endif /* include_lcd */网卡与bsp的接口#ifdef include_lan91c111_end#define end_lan91c111_load_func lan91c111load #define end_lan91c111_buff_loan 1 /*:*/ #define end_lan91c111_load_string 0x2000300:0x18:0x1

18、8:0x2:0x3100:0x08:0x01:0x3e:0x21:0xc7:0xf8 import end_obj * end_lan91c111_load_func (char *, void*); #endif /* include_lan91c111_end */end_tbl_entry enddevtbl =#ifdef include_lan91c111_end0, end_lan91c111_load_func, end_lan91c111_load_string, end_lan91c111_buff_loan, null, false, #endif 0, end_tbl_end, null, 0, null, false, ;makefile添加 mach_extra = lan91c111end.o调试经验iceida,objdumparm最基本的vxworks在vxworks下调试外围硬件中断的调试中断调试技巧学习vxworks的方法vxsim、vmware一台普通的x86计算机（完整的