Re: [ECOS] upload program in NEC V850 RAM

[Jonathan Larmour <jifl at eCosCentric dot com>]

Cristoforo Abbattista wrote:
> oK, it could be so, 
> but why the code is loaded and executed if we try to load it by the 
> v850-elf-gdb?

If this is the *very same* file that you load into v850-elf-gdb, then that 
may well show I'm right :-). GDB accepts ELF format file, but I could well 
believe ELF load support is disabled in the v850 redboot to save space.

You can try converting the file to an srec file using "v850-elf-objcopy -O 
srec infile outfile.srec". If Hello.S3 really is an srec file you should 
be able to just open it in a text editor or "more" and it should look 
something like:
S010000076383530666C6173682E6865785B
S1180000070A400F4CF0010A400F64F08F07F4FF8F07F2FF008D
S11800150000000000000000000000BC0700000000000000000F
S118002A000000000000BC0700000000000000000000000000FA

although obviously the actual numbers vary.

> > Teresa Fazio wrote:
> >
> > > Hi,  
> > > I'm new in this mailing list and I found someone of you having
> > > problems in uploading   programs in NEC V850 RAM, like me.   When I
> > > try to load a simple program Hello.S3, I do  
> > >
> > > RedBoot>load   
> > >
> > > Ctrl a + s  
> > > choice ymodem and then the file Hello.S3.  
> > > But the answer is:  
> > >
> > > CCCCCCCCCCCCCCCC*** Warning! Attempt to load S-record to address:
> > > 0xffffffff  RedBoot does not believe this is in RAM  Use TFTP for a
> > > chance to override this.  *** Warning! Checksum failure - Addr:
> > > ffffffff, EF <> 00  xyzModem - CRC mode, 647(SOH)/4(STX)/5(CAN)
> > > packets, 316 retries  
> > >
> > > What is the problem?  
> >
> > The addresses in your s-record file indicate it should be loaded to
> > 0xffffffff, which isn't right. Check your s-record file, and how it
> > was built, and particularly how the memory map was linked.
> >
> > Or more relevantly, if it isn't an s-record file, either convert it to
> > one or choose the appropriate flag to "load" to tell redboot what
> > format it is!
> >
> > Jifl
--
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--[ "You can complain because roses have thorns, or you ]--
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