u-boot question

[Frank]

--- Lei Sun <leisun124 at gmail.com> wrote:

> Hi all:
>   Is this the right list to ask for U-BOOT related question?
> If it's
> not, please igore it and direct me to the right list.
>   I am trying to bring up a custom designed board based on
> MPC8270,
> after spent 3 weeks on fixing hardware issues (extreme surgery
> !) , I
> finally be able to read something out of the flash and
> verified SDRAM
> is working as well. Up to this point our JTAG debugger is
> dead! I
> burned u-boot Image using a programmer and put it in. after
> power up
> and did a PORESET, I found out that every 20 seconds or so ,
> system
> generated HRESET,( by measuring the HRESET pin of the JTAG
> port). It
> does read Hardware Reset Config Word when reset happens (I saw
> pulse
> on the CS0 pin).  Before the JTAG die, i was able to issue
> "reset"
> command through it and found out the PC stays at 0x100,  but
> issue
> "go" command , the PC became 0x000000fc and hangs.
>   My questions are :
> 1. What's the best way to verify that CPU read correct HRCW ?
> 2. Any good JTAG debugger for this family of CPU you can
> recommend ?
> We bought Gaurdian-SE from etoolsmith (the company no longer
> exsit!)
> which really sucks!

Buy a Abatron BDI2000...

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