[U-Boot] Question about theKernel

[Wolfgang Denk]

Dear StrongLeg,

a few formal requests:

1) Please always keep the mailing list on Cc:
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In message <CAHSHuNchOR85tO=oE31yJ2UZCic7Jmjx_O6rXXZyCAV=zWy96g at mail.gmail.com> you wrote:
> it's not in u-boot, i use 'si' in gdb before theKernel, u-boot does
> call theKernel correctly
> after that the Kernel should run, first instructions are 8 'mov r0,
> r0' starting from 0x80300040, i can see the 'mov r0, r0' are there in
> 0x80300040 using 'x /32x 0x80300040',
> but when i run 'si', the gdb  print 'Cannot access memory at address
> 0x7xxxxxxx', the PC stuck at 0x80300040, really strange

It's not strange at all.  YOu are executing code that has been
dynamically loaded into memory, while you told GDB to use the memory
map and symbol table of U-Boot, which is at a completely different
address range.

If you want to continue debugging the Linux kenrel, you must load the
Linux kernel's symbol table matching the current memory map.

The hints in the documentation for debugging U-Boot after relocation
might be helpful.


Best regards,

Wolfgang Denk

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