Re: [U-Boot] U-boot env variables parsing

Dear Joakim Tjernlund,

In message OFEBF95CA1.44E68372-ONC12576F8.0043F4F7-C12576F8.0044D7F5@transmode.se you wrote:

linuxip=ip=$(ipaddr)::$(gatewayip):$(netmask):$(hostname):$(linuxif):off tboot=setenv bootargs $(linuxroot) $(linuxip) $(extra);tftp 100000; bootm 100000

it was fairly simple to do but I don't think WD applied it since the old shell was obsolete

I don't think you ever posted this before. I cannot find any trace of such a patch - not in the public archives nor locally.

/* find macros in this token and replace them */

• process_macros (token, finaltoken);
  

• if(process_macros (token, finaltoken)){
  

•   strcpy(tmptoken,finaltoken);
  

•   while(process_macros (tmptoken, finaltoken))
  

• 	strcpy(tmptoken,finaltoken);
  

• }
  

Hm... will this not make escaping impossible? Assume you want to pass

arg=${name}

to Linux. How would you escape this so it does NOT get expanded if you run process_macros() arbitrarily often?

Best regards,

Wolfgang Denk