JLink和JFlash使用方法笔记

这段时间在用jlink调试freescale的mx51板子，下面将使用jlink的方法在此做一个笔记。
   jlink是segger公司的产品，由于正版的工具巨贵，所以现在大部分人都喜欢用山寨版的jlink，幸运的是我的山寨版jlink支持arm cortex a8，所以能调试mx51板子。
   jlink的官方提供调试软件和驱动，调试软件有jlink commander（j-tag调试）、j-mem（内存查看）、j-flash（flash烧写）等。我主要用到的是jlink commander，以下是它的命令集：
  SEGGER J-Link Commander V4.20h ('?' for help)
Compiled Oct  5 2010 19:11:57
DLL version V4.20h, compiled Oct  5 2010 19:11:41
Firmware: J-Link ARM V8 compiled Oct  5 2010 08:59:59
Hardware: V8.00
S/N: 20100214
Feature(s): RDI,FlashDL,FlashBP,JFlash,GDBFull
VTarget = 3.280V
Info: TotalIRLen = ?, IRPrint = 0x..FFFFFFFFFFFFFFFFFFFFFFF1

WARNING: CPU core not found.
No devices found on JTAG chain. Trying to find device on SWD.

WARNING: CPU core not found.

****** Error: Parity error (Data = 0xFFFFFFFF, ReceivedParity = 1)

No device found on SWD.
Did not find any core.
Info: TotalIRLen = 9, IRPrint = 0x0011
Found 2 JTAG devices, Total IRLen = 5:
 #0 Id: 0x2B900F0F, IRLen: 04, IRPrint: 0x0, ARM ETB
 #1 Id: 0x07B76F0F, IRLen: 05, IRPrint: 0x1, ARM1176 Core
ARM11 identified.

J-Link>
  Available commands are:
----------------------
f          Firmware info
h          halt
g          go
Sleep      Waits the given time (in milliseconds). Syntax: Sleep
s          Single step the target chip
st         Show hardware status
hwinfo     Show hardware info
mem        Read memory. Syntax: mem  , (hex)
mem8       Read  8-bit items. Syntax: mem8  , (hex)
mem16      Read 16-bit items. Syntax: mem16 , (hex)
mem32      Read 32-bit items. Syntax: mem32 , (hex)
w1         Write  8-bit items. Syntax: w1 , (hex)
w2         Write 16-bit items. Syntax: w2 , (hex)
w4         Write 32-bit items. Syntax: w4 , (hex)
wm         Write test words. Syntax: wm
is         Identify length of scan chain select register
ms         Measure length of scan chain. Syntax: ms
mr         Measure RTCK react time. Syntax: mr
q          Quit
qc         Close JLink connection and quit
r          Reset target         (RESET)
rx         Reset target         (RESET). Syntax: rx
RSetType   Set the current reset type. Syntax: RSetType
Regs       Display contents of registers
wreg       Write register.   Syntax: wreg ,
SetBP      Set breakpoint.   Syntax: SetBP [A/T] [S/H]
SetWP      Set Watchpoint. Syntax: [R/W] [ [] [A-Mask]]
ClrBP      Clear breakpoint. Syntax: ClrBP  
ClrWP      Clear watchpoint. Syntax: ClrWP  
VCatch     Write vector catch. Syntax: VCatch
loadbin    Load binary file into target memory.
             Syntax: loadbin ,
savebin    Saves target memory into binary file.
             Syntax: savebin , ,
SetPC      Set the PC to specified value. Syntax: SetPC
le         Change to little endian mode
be         Change to big endian mode
log        Enables log to file.  Syntax: log
unlock     Unlocks a device. Syntax: unlock
           Type unlock without to get a list
           of supported device names.
           nRESET has to be connected
---- CP15 ------------
rce        Read CP15.  Syntax: rce , , ,
wce        Write CP15. Syntax: wce , , , ,
---- ICE -------------
Ice        Show state of the embedded ice macrocell (ICE breaker)
ri         Read Ice reg.  Syntax: ri (hex)
wi         Write Ice reg. Syntax: wi , (hex)
---- ETM -------------
etm        Show ETM status
re         Read ETM reg.  Syntax: re
we         Write ETM reg. Syntax: we , (hex)
es         Start trace
---- ETB -------------
etb        Show ETB status
rb         Read ETB register.  Syntax: rb
wb         Write ETB register. Syntax: wb , (hex)
---- TRACE -----------
TAddBranch TRACE - Add branch instruction to trace buffer. Paras:,
TAddInst   TRACE - Add (non-branch) instruction to trace buffer. Syntax:
TClear     TRACE - Clear buffer
TSetSize   TRACE - Set Size of trace buffer
TSetFormat TRACE - SetFormat
TSR        TRACE - Show Regions (and analyze trace buffer)
TStart     TRACE - Start
TStop      TRACE - Stop
---- SWO -------------
SWOSpeed   SWO - Show supported speeds
SWOStart   SWO - Start
SWOStop    SWO - Stop
SWOStat    SWO - Display SWO status
SWORead    SWO - Read and display SWO data
SWOShow    SWO - Read and analyze SWO data
SWOFlush   SWO - Flush data
---- File I/O --------
fwrite     Write file to emulator
fread      Read file from emulator
fshow      Read and display file from emulator
fdelete    Delete file on emulator
fsize      Display size of file on emulator
---- Test ------------
thg        Run go/halt 1000 times
ts         Run step 1000 times
testwspeed Test download speed.   Syntax: testwspeed [ []]
testrspeed Test upload speed.     Syntax: testrspeed [ [] [<numblock< div="" style="word-wrap: break-word;">
s>]]
testcspeed Test CPU speed.        Syntax: testcspeed []
---- JTAG ------------
Config     Set number of IR/DR bits before ARM device.
             Syntax: Config ,
speed      Set JTAG speed. Syntax: speed |auto|adaptive, e.g. speed 2000,
speed a
i          Read JTAG Id (Host CPU)
wjc        Write JTAG command (IR). Syntax: wjc (hex)
wjd        Write JTAG data (DR). Syntax: wjd (hex), (dec)
RTAP       Reset TAP Controller using state machine (111110)
wjraw      Write Raw JTAG data. Syntax: wjraw , ,
rt         Reset TAP Controller (nTRST)
---- JTAG-Hardware ---
c00        Create clock with TDI = TMS = 0
c          Clock
0          Clear TDI
1          Set   TDI
t0         Clear TMS
t1         Set   TMS
trst0      Clear TRST
trst1      Set   TRST
r0         Clear RESET
r1         Set   RESET
---- Connection ------
usb        Connect to J-Link via USB.  Syntax: usb , where port is 0..3
ip         Connect to J-Link ARM Pro or J-Link TCP/IP Server via TCP/IP.
           Syntax: ip
---- Configuration ---
si         Select target interface. Syntax: si ,
           where 0=JTAG and 1=SWD.
power      Switch power supply for target. Syntax: power [perm],
           where State is either On or Off. Example: power on perm
wconf      Write configuration byte. Syntax: wconf ,
rconf      Read configuration bytes. Syntax: rconf
usbaddr    Assign usb address to the connected J-Link: Syntax: usbaddr =
ipaddr     Show/Assign IP address and subnetmask of/to the connected J-Link.
gwaddr     Show/Assign network gateway address of/to the connected J-Link.
dnsaddr    Show/Assign network DNS server address of/to the connected J-Link.
conf       Show configuration of the connected J-Link.
ecp        Enable the  J-Link control panel.
calibrate  Calibrate the target current measurement.
----------------------
NOTE: Specifying a filename in command line
will start J-Link Commander in script mode.

  总结一下我们使用的最多的命令：
  usb--------连接目标板
  r----------重启目标板
  halt-------停止cpu运行的程序
  loadbin----加载可执行的二进制文件
  g----------跳到代码段地址执行
  s----------单步执行（调试用）
  setpc-----设置pc寄存器的值（调试用）
  setbp-----设置断点
  Regs-------读寄存器组织
  wreg-------写寄存器
  mem--------读内存
  w4---------写内存
  power off mmu---关闭mmu，这个对于裸板调试很重要
  w4 cpsr,0x0000001f------切换到系统模式
  speed------设置jtag的传输速率
  rce 0,c0,c0,0-----设置cp15寄存器的第1个寄存器为0
  完结。

Jlink Commander的使用例子：其中输入的地址和数据大小都是默认十进制来的，

windows 中

下载运行特制的程序

对于S3C2410、S3C2440处理器，它们内部有4K的SRAM，当使用Nor Flash启动时，地址为0x40000000；当使用Nand Flash启动时，地址为0。

对于S3C2410、S3C2440开发板，一般都外接64M的SDRAM。SDRAM能被使用之前，需要经过初始化。

所以，先把一个init.bin下载到内部SRAM去运行，它执行SDRAM的初始化；然后再下载一个比较大的程序，比如u-boot到SDRAM去动行，它将实现对Nor、Nand Flash的操作。

以下是在J-Link commander里的命令，假设init.bin、u-boot.bin在e:盘下。

1. speed 12000 //设置TCK为12M，下载程序时会很快 

2. 下载并运行init.bin，这是用来初始化SDRAM的 

### 如果是NAND启动： 

loadbin e:\init.bin 0 

setpc 0 

g 

### 如果是Nor启动： 

loadbin e:\init.bin 0x40000000 

setpc 0x40000000 

g 

### 下载特制的uboot： 
h 

loadbin e:\u-boot.bin 0x33f80000 

setpc 0x33f80000 

g 

现在，u-boot已经启动了，在串口工具上可以看到如图6所示界面，以后就可以通过网络、串口下载文件，然后使用u-boot里的命令进行烧写。 

当然，如果没有网络，也不想忍受串口的速率，也可以通过jlink commander下载，比如： 

h 

loadbin your_file.bin 0x30000000 

g 

这时，你的文件已经被下载到SDRAM 0x30000000去了。 

后面的操作就是u-boot的命令了。

###使用u-boot烧写Flash

以例子为例，假设需要烧写一个名为leds.bin的程序到Nor、Nand Flash，那么请参考

(1)．通过Jlink下载：

在J-Link commander里执行：

h

loadbin e:\leds.bin 0x30000000

g

注意leds.bin的大小

(2)．通过u-boot烧写到Nor Flash：

在u-boot里执行：

protect off all // 解锁

erase 0 2ffff // 擦除从0地址开始的大小为0x30000的NOR Flash扇区(大小为可擦除块的整数倍，可以运行flash info命令查看)

cp.b 0x30000000 0 30000 // 把前面下载到0x30000000的程序烧写到NOR去

(3)．通过u-boot烧写到Nand Flash：

在u-boot里执行：

nand erase 0 30000 // 擦除从0地址开始的大小为0x30000的Nnad Flash扇区

nand write.jffs2 30000000 0 30000 // 把前面下载到0x30000000的程序烧写到Nand去

注意，上面用的2ffff、30000等数字是192K，如果你的程序比较小，请自行设置
ubuntu中使用JLinkExe 

J-Link>device arm9 (arm9是必须要加的，否则J-link会识别不出设备内核会报错)
Disconnecting from J-Link...O.K.
Device "ARM9" selected.

TotalIRLen = 4, IRPrint = 0x01
CP15.0.0: 0x41129200: ARM, Architecure 4T
CP15.0.1: 0x0D172172: ICache: 16kB (64*8*32), DCache: 16kB (64*8*32)
Cache type: Separate, Write-back, Format A
Found 1 JTAG device, Total IRLen = 4:
 #0 Id: 0x0032409D, IRLen: 04, IRPrint: 0x1, ARM9 Core
ARM9 identified.
J-Link>loadbin /mnt/hgfs/ShareFolder/leds.bin 40000000
Halting CPU for downloading file.
Downloading file [/mnt/hgfs/ShareFolder/leds.bin]...
O.K.
J-Link>setpc 40000000（等效于0x40000000）
J-Link>g
J-Link>

JFlash的使用

windows中用命令行cmd的方式 使用JFlash来给开发板烧写程序

"D:\Program Files (x86)\SEGGER\JLink_V512f\JFlash.exe" -openprjG:\s3c2440.jflash -openG:\leds.bin,0 -auto -startapp -exit

注意1：cmd中对路径中包含空格的不能识别

D:\>D:\Program/ Files/ /(x86/)\SEGGER\JLink_V512f\JFlash.exe
'D:\Program/' 不是内部或外部命令，也不是可运行的程序
或批处理文件。

解决办法：如上所示，将包含空格路径的用“”包含起来即可。

注意2：JFlash.exe 使用-openprj"*.jflash的工程路径"   -open"*.bin的二进制程序路径",0(烧写的起始地址) 选项来指定烧写参数。-openprj与后面的路径不能有空格，-open与后面的路径不能有空格，逗号“，”前后不能有空格，否则烧写不成功。 

可以写成一个批处理 内容和上面输入的内容一样

 

转自：https://blog.csdn.net/hexiechina2010/article/details/51473326