Re: [ECOS] Run Redboot from flash

["Ricardo Andrino" <ricardo_andrino@web.de>]

Please see my comments below
Thanks

Gary Thomas <gary@mlbassoc.com> schrieb am 11.12.03 15:09:45:
> 
> On Thu, 2003-12-11 at 06:57, Ricardo Andrino wrote:
> > Hello and thank you again, I will do what you say.
> > Now i am running redboot fron RAM and try to run the hello program. I have made the following:
> > 
> > 1)Convert the elf image (with no extension or .elf or .exe) to Binary (.bin) image:
> > for ARM:
> > $arm-elf-objcopy -O binary hello hello.bin
> > 
> > 2)Open terminal:
> > for Linux: Open minicom
> > $ minicom
> > 
> > 3)Set the baud rates & other Uart parameters:
> > usualy 38400 baud + 8bits + no parity + no handshake. Hardware and Software flow control NO.
> > 
> > 4)RedBoot> load -r -m xmodem -b 0x000200c0 ( first memory zone available after download redboot_RAM.elf) 
> > 
> > 5)After issuing the command send the .bin file using XMODEM protocol:
> > for Linux (minicom):
> > issue send file command <Cntl+A, S>, select "send xmodem", type the path to the file (.bin) & send
> > 
> > 6)At the Redboot prompt "RedBoot> " issue the 'go' command:
> > RedBoot> go 0x20100( after 40 position for vectors, i am not sure about this, should be 0x000200c0?)
> > 
> > I should see the application running & the outputs on the terminal window but no output is diplayed but the led D3 light.........(EB40A)
> > 
> > I have made correct the redboot_RAM.elf, connecto to redboot, a hello RAM aplication etc, etc....
> > 
> > Any ideas?
> 
> This doesn't work because the eCos application will be linked to run
> at 0x20000, but you've loaded it to 0x200C0.  If your RedBoot is truly
> using all of that RAM, you'll need to adjust the memory layout for RAM
> applications to start higher.  

> 
> Much simpler would be to tune your RedBoot so that it's memory use is
> less.  There are a number of simple things that you can do to help this.
> Try reducing the number of history lines - that should get it down
> quickly.
***************************************************************************
Now I have downloaded redboot_RAM.elf file( i have followed your instructions) and the avalible memory is (0x0001f0a0-0x000400000) so i could run a Ram program from 0x00020000 couldn't i? But i load the .bin file instead the .elf file ( RedBoot> load -r -m xmodem -b 0x00020000) and no output is displayed too.
****************************************************************************
> Also, don't load ELF images (I assume that's what you tried) with -r.
> This option tells RedBoot not to interpret the image at all.  What you
> ended up doing was executing the ELF header - not exactly ARM code!
> If things are set up correctly, you should be able to just:
>   RedBoot> load -m xm
>   ... send file
>   RedBoot> go
****************************************************************************
If i do that ( download the ELF file instead the .bin) the download is interrupted and display the following message: Attempt to load ELF data to address :0x00008054 whih is not in RAM
***************************************************************************
How could i change the traget.ld to run the aplications in higher address?
> > 
> > Thanks in advance.
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > Nick Garnett <nickg@ecoscentric.com> schrieb am 11.12.03 12:35:45:
> > > 
> > > <ricardo_andrino@web.de> writes:
> > > 
> > > > Hello,
> > > >
> > > > I have built redboot (RAM start up mode) and i have followed
> > > > all the instructions for EB40A board.All run correct but after
> > > > programming the flash memory( fi wr -f 0x01100000 -b %{FREEMEMLO} -l
> > > > 0x10000), the Prompt Redboot> doesn't allow me to type any command
> > > > (hangs up)and when i set JP1 to the user position and make a reset,
> > > > all leds light and redboot doesn't allow me to type any command
> > > > too. Any idea?
> > > > 
> > > > Once Redboot is good installed in flash the way to run it is typing
> > > > minicom and a redboot prompt must on the screen?
> > > > 
> > > 
> > > If you are seeing RedBoot output the prompt then it should be ready to
> > > accept input. It is very rare for one direction to work and the other
> > > not. Check that minicom is not set up to expect hardware flow
> > > control. Presumably you loaded a RAM RedBoot via Angel and then
> > > downloaded and flashed the ROM RedBoot using that. If the RAM RedBoot
> > > worked I cannot see why the ROM one fails. Try rebuilding the ROM
> > > RedBoot from scratch, in a clean directory, it's a longshot but maybe
> > > it was misconfigured in some way.
> > > 
> > > 
> > > -- 
> > > Nick Garnett                    eCos Kernel Architect
> > > http://www.ecoscentric.com      The eCos and RedBoot experts
> > > 
> > > 
> > > -- 
> > > Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
> > > and search the list archive: http://sources.redhat.com/ml/ecos-discuss
> > > 
> > 
> > 
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> -- 
> Gary Thomas <gary@mlbassoc.com>
> MLB Associates
> 


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