linux调试内核jlink,Jlink + Vmware虚拟机调试uboot

短命女 2023-01-21 04:27 16阅读 0赞

以前的笔记丢了,重写一下,细节部分就不说了,还是比较简单的.

Jlink 版本V4.34d, 网上有人说V4.40以上不识别山寨JLINK V8

![d50ebb9598edfe4775353455e3536098.png][]

注意Localhost only 不要选上,不让通过虚拟机连接时会连不上

我以前就没有注意这个,老版本直接可以连,新版本不能连了,还以为是软件取消了这个功能或者是软件bug

虚拟机的设置要设置成桥接,如果设置成NAT,开发板是看不见虚拟机的

设置为桥接,好要和开发主机在同一网段

我的HOST 192.168.1.18, 虚拟机 192.168.1.19

网管 192.168.1.2

uboot 连接脚本是0x33ff8000开始的,因为uboot开始的汇编是位置无关的,这部分代码负责copy uboot到0x33f80000

我们如果是在内存中调试的话,可以通过宏定义去掉这部分copy的代码

如果要在内存中调试,首先要初始化RAM,这部分内容要通过调试器gdb来完成

主要就是时钟,sdram刷新之类的时钟,网上搜来的配置

\#\#main function defined for initial the S3C2440 CPU.

define reset\_2440

monitor endian little  \#\#little endian, should be the same as your application.

\#\#copied from JLinkGDBServer Document.

monitor reset            \#\#reset the S3C2440

monitor reg cpsr = 0xd3  \#\#setup cpsr register.

monitor speed auto       \#\#Link Speed.

\#\#translated from VIVI S3C2440 version.

\#disable watchdog

monitor MemU32 0x53000000 = 0

\#disalbe interrupt --- int-mask register

monitor MemU32 0x4A000008 = 0xFFFFFFFF

\#disalbe interrupt --- int-sub-mask register

monitor MemU32 0x4A00001C = 0x7FFF \#\# vivi set it as 0x7FF, why???

\#initialize system clocks --- locktime register

monitor long 0x4C000000 = 0x00FFFFFF

\#initialize system clocks --- clock-divn register

monitor long 0x4C000014 = 0x5            \#CLKDVIN\_400\_148

\#    monitor cp15 1 0 0 0

\#    monitor cp15 1 0 0 0 =0xc0000078

\#initialize system clocks --- mpll register

monitor long 0x4C000004 = 0x7f021    \#default clock

\#setup memory controller

monitor MemU32 0x48000000 = 0x22111110    \#conw

monitor MemU32 0x48000004 = 0x00000700    \#bank0

monitor MemU32 0x48000008 = 0x00000700     \#bank1

monitor MemU32 0x4800000c = 0x00000700     \#bank2

monitor MemU32 0x48000010 = 0x00000700     \#bank3

monitor MemU32 0x48000014 = 0x00000700     \#bank4

monitor MemU32 0x48000018 = 0x00000700     \#bank5

monitor MemU32 0x4800001c = 0x00018009     \#bank6

monitor MemU32 0x48000020 = 0x00018009     \#bank7

monitor MemU32 0x48000024 = 0x008c04F4    \#vREFRESH HCLK: 100M

monitor MemU32 0x48000028 = 0x32        \#vBANKSIZE -- 128M/128M --- should

according to the physical

memory size? --- 0xB0 ??

monitor MemU32 0x4800002c = 0x30        \#vMRSRB6

monitor MemU32 0x48000030 = 0x30        \#vMRSRB7

end

\#\#main function defined for connect to the TARGET.

\#\#arg0 = IP address.

\#\#arg1 = PORT number of JLINK gdb server.

define connect\_jlink

\#    set $ip = 192.168.1.18

\#    set $port = 2331

target remote 192.168.1.18:2331

reset\_2440

end

我用emacs调试uboot,gdb命令行

/usr/local/CodeSourcery/Sourcery\_G++\_Lite/bin/arm-none-linux-gnueabi-gdb --annotate=3 u-boot

执行后进入调试界面

(gdb) connect\_jlink

0x00000000 in ?? ()

Target endianess set to "little endian"

Expected an decimal digit (0-9)

Writing register (CPSR = 0x000000D3)

Select auto JTAG speed (8000 kHz)

Writing 0x00000000 @ address 0x53000000

Writing 0xFFFFFFFF @ address 0x4A000008

Writing 0x00007FFF @ address 0x4A00001C

Writing 0xFF000000 @ address 0x4C000000

Writing 0x00000005 @ address 0x4C000014

Writing 0x0007F021 @ address 0x4C000004

Writing 0x22111110 @ address 0x48000000

Writing 0x00000700 @ address 0x48000004

Writing 0x00000700 @ address 0x48000008

Writing 0x00000700 @ address 0x4800000C

Writing 0x00000700 @ address 0x48000010

Writing 0x00000700 @ address 0x48000014

Writing 0x00000700 @ address 0x48000018

Writing 0x00018009 @ address 0x4800001C

Writing 0x00018009 @ address 0x48000020

Writing 0x008E04EB @ address 0x48000024

Writing 0x000000B2 @ address 0x48000028

Undefined command: "according".  Try "help".

(gdb) load

Loading section .text, size 0x2dd68 lma 0x33f80000

Loading section .rodata, size 0x64f4 lma 0x33fadd68

Loading section .data, size 0x562c lma 0x33fb425c

Loading section .u\_boot\_cmd, size 0x578 lma 0x33fb9888

Start address 0x33f80000, load size 237056

Transfer rate: 378 KB/sec, 13944 bytes/write.

(gdb) s

现在可以正常调试了,最后上一下截图

![900bcaf1ce9d9d0164d96935adf249df.png][]

[d50ebb9598edfe4775353455e3536098.png]: /images/20221021/1a4fe3374f364aa9b3b35d5d45cb64ff.png
[900bcaf1ce9d9d0164d96935adf249df.png]: /images/20221021/c24ff35ed0b84e06b33e5b93adf9efcb.png

linux调试内核jlink,Jlink + Vmware虚拟机调试uboot

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