本文转载自：http://www.linuxdiyf.com/linux/24086.html
Ubuntu 16.04下EasyOpenJTAG+OpenOCD的安装和使用
发布时间:2016-09-12 09:09:31来源:linux网站作者:heyuqian_csdn
操作系统：VMware fusion + Ubuntu 16.04.1 LTS
开发板：JZ2440 V3 + EasyOpenJTAG
设备连接：
要烧写裸机程序离不开OpenJTAG，OpenJTAG包含了3大功能，USB 转串口、USB 转 JTAG、 在线调试。
借助OpenOCD等开源软件可以完成程序的下载、烧写、调试等任务:
首先安装libftdi和ftdi-eeprom 下载地址http://www.intra2net.com/en/developer/libftdi/download.php：
1、下载confuse-2.5.tar.gz libftdi1-1.3.tar.bz2并解压：
root@ubuntu:/work/tmp# ls /mnt/hgfs/jz2440/download/
confuse-2.5.tar.gz libftdi1-1.3.tar.bz2
root@ubuntu:/work/tmp# tar -jxvf /mnt/hgfs/jz2440/download/libftdi1-1.3.tar.bz2 -C ./
root@ubuntu:/work/tmp# tar -zxvf /mnt/hgfs/jz2440/download/confuse-2.5.tar.gz -C ./
2、安装libftdi，参考源码目录下的README.build：
root@ubuntu:/work/tmp/libftdi1-1.3# mkdir build; cd build：
root@ubuntu:/work/tmp/libftdi1-1.3# cmake -DCMAKE_INSTALL_PREFIX="/usr" ../; make; sudo make install
3、安装ftdi-eeprom，参考源码目录下的INSTALL
root@ubuntu:/work/tmp# cd confuse-2.5/; ./configure; make; make install
然后安装OpenOCD
1]、下载OpenOCD
root@ubuntu:/work/tmp# git clone git://openocd.git.sourceforge.net/gitroot/openocd/openocd
2]、编译并安装， 请参考源码目录下的README.build
root@ubuntu:/work/tmp/openocd# ./bootstrap
root@ubuntu:/work/tmp/openocd# ./configure --enable-ftdi
root@ubuntu:/work/tmp/openocd# make; make install
编译后的版本为：
root@ubuntu:/work/tmp/openocd# openocd -v
Open On-Chip Debugger 0.10.0-dev-00371-g81631e4 (2016-09-11-18:21)
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
3]、增加udev规则，以便使用普通用户权限操作调试器。以root权限创建/etc/udev/rules.d/45-openjtag.rules（文件名可以换成别的）：
SYSFS{idProduct}=="5118", SYSFS{idVendor}=="1457", MODE="666", GROUP="plugdev"
4]、添加OpenOCD配置文件openocd.cfg：
interface ftdi
#通过描述来指定设备，应当和dmesg中的Product一致
#ftdi_device_desc "USB<=>JTAG&RS232"
#通过PID VID指定调试器，比描述更准确些
ftdi_vid_pid 0x1457 0x5118
#如果有多个同样的调试器，还可以指定要使用的调试器序列号
#ftdi_serial
#引脚定义，相当于旧版中的 ft2232_layout jtagkey
ftdi_layout_init 0x0c08 0x0f1b
ftdi_layout_signal nTRST -data 0x0100 -noe 0x0400
ftdi_layout_signal nSRST -data 0x0200 -noe 0x0800
# Target configuration for the Samsung 2440 system on chip
# Tested on a S3C2440 Evaluation board by keesj
# Processor : ARM920Tid(wb) rev 0 (v4l)
# Info: JTAG tap: s3c2440.cpu tap/device found: 0x0032409d (Manufacturer: 0x04e, Part: 0x0324, Version: 0x0)
if { [info exists CHIPNAME] } {
set _CHIPNAME $CHIPNAME
} else {
set _CHIPNAME s3c2440
}
if { [info exists ENDIAN] } {
set _ENDIAN $ENDIAN
} else {
# this defaults to a bigendian
set _ENDIAN little
}
if { [info exists CPUTAPID ] } {
set _CPUTAPID $CPUTAPID
} else {
# force an error till we get a good number
set _CPUTAPID 0x0032409d
}
#jtag scan chain
jtag newtap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0x0f -expected-id $_CPUTAPID
#
#jtag_rclk 3000
adapter_khz 1234
#set _TARGETNAME $_CHIPNAME.cpu
#target create $_TARGETNAME arm920t -endian $_ENDIAN -chain-position $_TARGETNAME -variant arm920t
#$_TARGETNAME configure -work-area-phys 0x200000 -work-area-size 0x4000 -work-area-backup 0
#arm7_9 fast_memory_access enable
set _TARGETNAME $_CHIPNAME.cpu
target create $_TARGETNAME arm920t -chain-position $_TARGETNAME
$_TARGETNAME configure -work-area-phys 0x00200000
-work-area-size 0x4000 -work-area-backup 0
#reset configuration
reset_config trst_and_srst
#Flash CFG<openocd.pdf P[74~]
#flash bank name driver base size chip_width bus_width target [driver_options]
#usage: flash bank <name> <driver> <base> <size> <chip_width> <bus_width> <target>
#flash bank bank_id driver_name base_address size_bytes chip_width_bytes bus_width_bytes target [driver_options ...]
flash bank 0 cfi 0x0 0x200000 2 2 $_TARGETNAME
#NAND CFG <openocd.pdf P[88~92]>
#nand device name driver target [ configparams... ]
nand device 0 s3c2440 $_TARGETNAME
root@ubuntu:~# telnet localhost 4444
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
Open On-Chip Debugger
> halt
> nand probe 0
NAND flash device 'NAND 256MiB 3.3V 8-bit (Samsung)' found
> load_image leds.bin
136 bytes written at address 0x00000000
downloaded 136 bytes in 0.015671s (8.475 KiB/s)
> resume 0x0
最后启动OpenOCD：首先将EasyOpenJTAG USB连接至PC，然后开发板上电，最后在和配置文件openocd.cfg相同目录执行openocd
root@ubuntu:~# openocd
Open On-Chip Debugger 0.10.0-dev-00371-g81631e4 (2016-09-11-22:15)
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
Info : auto-selecting first available session transport "jtag". To override use 'transport select <transport>'.
adapter speed: 1234 kHz
trst_and_srst separate srst_gates_jtag trst_push_pull srst_open_drain connect_deassert_srst
Info : clock speed 1234 kHz
Info : JTAG tap: s3c2440.cpu tap/device found: 0x0032409d (mfg: 0x04e (Samsung), part: 0x0324, ver: 0x0)
Info : Embedded ICE version 2
Info : s3c2440.cpu: hardware has 2 breakpoint/watchpoint units
可以看到设备已经识别成功。