[U-Boot-Users] BDI2000/U-BOOT/ARM, need HELP

[raymond yang]

Hello,

I am not a native english speaker, sorry for my stupid
english forehand.
I am trying to learn the famous U-BOOT.
My kit is:
-BDI2000
-ARM7(S3C44B0) (Compiled from /DAVE/B2)

My working log here:
1) First stuff very strange
(gdb) file u-boot
Reading symbols from u-boot...done.
(gdb) target remote 192.168.0.17:2001
Remote debugging using 192.168.0.17:2001
0x00000000 in ?? ()
(gdb) step
<=========odd here!!!
Cannot find bounds of current function              
<=========odd here!!!
(gdb)
2) Second stuff very strange
Then i change it to 
(gdb) load
Loading section .text, size 0x152b4 lma 0xc100000
Loading section .rodata, size 0x4a40 lma 0xc1152b4
Loading section .data, size 0xc28 lma 0xc119cf4
Loading section .u_boot_cmd, size 0x4b0 lma 0xc11a91c
Start address 0xc100000, load size 110028
Transfer rate: 176044 bits/sec, 301 bytes/write.
However, in the telnet from the BDI2000
Core#0>info
    Core number       : 0
    Core state        : debug mode (ARM)
    Debug entry cause : Debug Request
<===============Odd here
    Current PC        : 0x0c100000
<===============Odd here
    Current CPSR      : 0x000000d3 (Supervisor) 

3) The third one
(gdb) b cpu_init_crit
Breakpoint 1 at 0xc1000b4: file
/debug/u-boot-1.1.1/cpu/s3c44b0/start.S, line 189.
(gdb) c
Continuing.
warning: Cannot insert breakpoint 1:
Error accessing memory address 0xc1000b4: Unknown
error 4294967295.
Here the telenet console show me
Core#0>
# TARGET: all hardware breakpoints in use

Actually, i just hard reset both the BDI2000 and the
target board,
and restart the gdb, and no breakpoint at all.

Any big brother could help? Very appreciate!

Best Regards
Techie







		
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