Ubuntu 16.04下EasyOpenJTAG+OpenOCD的安装和使用【转】

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。

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