[U-Boot-Users] Debug with Abatron BDI2000 on 405EP evaluation board

[Wolfgang Denk]

Dear llandre,

in message <5.1.1.6.0.20030310192644.02f86d88 at dns.struinfo.it> you wrote:
> 
> I have a couple questions about it:
> 1) The BDI2000 is shipped with a script file for the 405GP evaluation board 
> (evb405gp.cfg) that is is very similar to 405EP board. In the [INIT] 
> section, several initializations are performed in order to debug 
> application code in SDRAM. Since the boot loader is executed out of reset, 
> to debug U-Boot from the SRAM, I think these initializations must be 
> removed. In other words the [INIT] section must be empty, because U-Boot 
> itself will initialize the microcontroller. Is it correct?

This is correct. The [INIT] section should contain only  the  minimum
of  necessary  initializations,  like turning off any hardware watch-
dogs, etc. SDRAM initialization should be removed, so tha the  U-Boot
code finds a virgin system, as it does without the BDI2000 attached.


> 2) In the bdiGDB User Manual they say to load the application code with the 
> LOAD command in the [HOST] section of the script file. Is it equivalent to 
> use the load command from GDB shell?

Since you don;t initialize the SDRAM, you will normally have  to  use
the  "prog"  command  to  program  the  U-Boot image to flash. Do you
really have SRAM connected as boot device?

Best regards,

Wolfgang Denk

-- 
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