Re: Default for BOOTP in redboot [Sec=Unclassified]

[Peter Jansen <peter dot jansen at aad dot gov dot au>]

Hi Carl,

Thanks for the quick reply, I have done more more digging.

> The logic seems clear to me. Please correct me if I am wrong.
>
> Suppose that you want to boot from flash, what you do is to define the top
> level macro CYGSEM_REDBOOT_DEFAULT_NO_BOOTP (This is done manually? I think
> that there should be a configuration mechanism). Then:

I think this comes from the redboot.cdl file or the user ones in the 
particular port, in my case redboot_ROMRAM_ts7250.ecm

I found that I need to set

cdl_component CYGDAT_REDBOOT_DEFAULT_IP_ADDR {user_value 1 192,168,1,254};

then the macro DEFAULT_NO_BOOTP get set from the configuration.

> 1. Line 95: The macro won't be redefined to be 0;
> 2. Line 684: "use_bootp" will be assigned value "false";

Does this not mean that by line 684 the macro is always defined (either 
in the configuration or line 96), so use_bootp is always set false by 
line 685. I guess this means that its always set to false if there is no 
flash configuration, although the #ifdef is a but redundant.

Should line 684 be a #if (not #ifdef)?

Ok, I was wondering how use_bootp was getting set in my port, and I 
found that line 702 reads the use_bootp variable from flash, this was 
setting the use_bootp variable for the test in line 703. The default 
flash value is set in line 102.

> 3. Line 703: condition evaluated to be true, so the block (boot from flash
> procedure)is entered, and IP address is got from flash;
> 4. Line 758: condition evaluated to be false, so the block (bootp procedure)
> is not entered.

So yes I guess the logic does work out, I was missing setting the IP_ADDR.

Regards,

--
Peter Jansen
Australian Government Antarctic Division


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