[nas-2000] Re: Bootloader - cheap JTAG here..
- From: "Alfred Bruckner" <alfred.bruckner@xxxxxx>
- To: <nas-2000@xxxxxxxxxxxxx>
- Date: Sat, 5 Jan 2008 17:32:05 +0100
Hi,
nice to hear that you could reactivate your NAS!
FlashTool was a teamwork of rambo who did the SW and me who had to find out
how we can access the CPU and Flash through JTAG.
At the beginning I thought it is easy to access the Flash but it wasn't.
The CPU has no JTAG scan chain as known from other chips.
You cannot access the Pins with boundary scan! You must use the debug
functionality and write CPU registers and assembly commands to access the
Flash. I believe it is nearly impossible to understand what the SW is doing
if you don't know the background.
We want to add one more feature to FlashTool so we can't release the source
now. It is written in Visual C++.
FTDI2232 support could be possible.
Would you like to adopt it to linux? I am not sure if it is worth doing so
as we have a working solution now and it is only needed for emergency
recovery.
Maybe wine could be a solution.
Regards,
Alfred
> -----Original Message-----
> From: nas-2000-bounce@xxxxxxxxxxxxx [mailto:nas-2000-bounce@xxxxxxxxxxxxx]
> On Behalf Of OB
> Sent: Saturday, January 05, 2008 3:37 PM
> To: nas-2000@xxxxxxxxxxxxx
> Subject: [nas-2000] Re: Bootloader - cheap JTAG here..
>
> Hello again,
>
> Another question : Do you have the source code of the Nas2000FlashTool and
> if yes, would you consider releasing it ?
>
> My problem is that I don't have a parallel port anymore on my computers,
> and beside that I don't run windows.
> However, I have this : http://www.amontec.com/jtagkey.shtml , which is a
> FTDI2232 - based USB jtag adapter that
> work from 5V to 1.4V.
> This adapter is supported by OpenOCD, and I would like to make a config
> file for our NAS from that, to use under Linux and even windows (I think).
> AFAIK, you can buy a little FTDI2232-based card on http://www.ftdichip.com
> for ~£20.
>
> Again, many thanks for your work !
>
> ob
>
>
>
> Alfred Bruckner wrote:
> > Hi,
> >
> > if you want people to do things in their free time you could use words
> > like please, thank you...
> >
> > I spent about two weeks in getting that work although I don?t need it!
> >
> > I created an entry at wiki. http://www.nas-2000.org
> > <http://www.nas-2000.org/>
> >
> > There is also an English corner at out forum.
> > http://nas2000.homeunix.com <http://nas2000.homeunix.com/>
> >
> > Alfred.
> >
> >
> >
> > ------------------------------------------------------------------------
> >
> > *From:* nas-2000-bounce@xxxxxxxxxxxxx
> > [mailto:nas-2000-bounce@xxxxxxxxxxxxx] *On Behalf Of *Default User
> > *Sent:* Friday, January 04, 2008 6:16 PM
> > *To:* nas-2000@xxxxxxxxxxxxx
> > *Subject:* [nas-2000] Re: Bootloader - cheap JTAG here..
> >
> >
> >
> > Its cool but can you write manual in english, here?
> >
> > On Jan 3, 2008 1:36 PM, Alfred Bruckner <alfred.bruckner@xxxxxx
> > <mailto:alfred.bruckner@xxxxxx>> wrote:
> >
> > Hi everybody,
> > there is a solution to recover the bootloader!
> > Pls have a look at http://nas2000.homeunix.com
> >
> > Good luck,
> > HWguru
> >
> >> -----Original Message-----
> >> From: Alfred Bruckner [mailto:alfred.bruckner@xxxxxx
> > <mailto:alfred.bruckner@xxxxxx>]
> >> Sent: Sunday, November 25, 2007 4:42 PM
> >> To: 'nas-2000@xxxxxxxxxxxxx <mailto:nas-2000@xxxxxxxxxxxxx>'
> >> Subject: RE: [nas-2000] Re: Bootloader - cheap JTAG here..
> >>
> >> Hi,
> >> if you cannot access the JTAG port with some commercial SW like
> OCdemon
> >> there is maybe the connection of Pin 8 and 15 on the parallel port
> >> connector missing.
> >> You can find a wiggler schematic here:
> >> http://wiki.openwrt.org/OpenWrtDocs/Customizing/Hardware/JTAG_Cable
> > <http://wiki.openwrt.org/OpenWrtDocs/Customizing/Hardware/JTAG_Cable>
> >>
> >> Alfred
> >>
> >> -----Original Message-----
> >> From: Alfred Bruckner [mailto:alfred.bruckner@xxxxxx
> > <mailto:alfred.bruckner@xxxxxx>]
> >> Sent: Tuesday, November 20, 2007 7:31 PM
> >> To: 'alfred.bruckner@xxxxxx <mailto:alfred.bruckner@xxxxxx>'
> >> Subject: RE: [nas-2000] Re: Bootloader - cheap JTAG here..
> >>
> >>
> >>
> >> -----Original Message-----
> >> From: Alfred Bruckner [mailto: alfred.bruckner@xxxxxx
> > <mailto:alfred.bruckner@xxxxxx>]
> >> Sent: Tuesday, November 20, 2007 1:05 AM
> >> To: 'nas-2000@xxxxxxxxxxxxx <mailto:nas-2000@xxxxxxxxxxxxx>'
> >> Subject: RE: [nas-2000] Re: Bootloader - cheap JTAG here..
> >>
> >>
> >> -----Original Message-----
> >> From: nas-2000-bounce@xxxxxxxxxxxxx
> > <mailto:nas-2000-bounce@xxxxxxxxxxxxx>
> > [mailto:nas-2000-bounce@xxxxxxxxxxxxx
> > <mailto:nas-2000-bounce@xxxxxxxxxxxxx>]
> >> On Behalf Of philipp Wehrheim
> >> Sent: Tuesday, November 20, 2007 12:54 AM
> >> To: nas-2000@xxxxxxxxxxxxx <mailto:nas-2000@xxxxxxxxxxxxx>
> >> Subject: [nas-2000] Re: Bootloader - cheap JTAG here..
> >>
> >>
> >>
> >> Asure wrote:
> >> >>
> >> >> Default User schrieb:
> >> >>> Where i can find that product, can you gimme any image of JTAG
> adapter
> >> >>> i need to reflash bootloader?
> >> >>>
> >> >>> On Nov 19, 2007 9:18 PM, flipstar@xxxxxxx
> > <mailto:flipstar@xxxxxxx> <flipstar@xxxxxxx <mailto:flipstar@xxxxxxx>>
> > wrote:
> >> >>>> Hey Default User / Kenshin
> >> >>>>
> >> >>
> >> >> Please reread the next line:
> >> >>
> >> >>>> the only way to reflash the bootloader is via a JTAG Adapter ...
> >> >>>> Alfred and Jerkball are working on this ... so stay tuned!
> >> >>
> >> >> END
> >> >>
> >> >> You'll have to build the JTAG adpater yourself.
> >> >> BUT IT IS NOT FINISH YET
> >> >>
> >> >> --
> >> >
> >> > Ok ok.. here's one for ~9 euro's ex shipping.
> >> > http://cgi.ebay.nl/ws/eBayISAPI.dll?ViewItem&item=120185102114
> > <http://cgi.ebay.nl/ws/eBayISAPI.dll?ViewItem&item=120185102114>
> >> > With a decent length of printercable you can go a long way, and no
> >> > worries about
> >> > the resistor-based wiggler type cables.. This is the real thing.
> >> >
> >> > I have bought from this guy before, he's ok & fast. Haven't used the
> >> > adapter yet, i
> >> > bought it for some realtek device, that i need to solder wires to
> the
> >> > cpu.. bah..
> >> >
> >> > So, where's the unsoldered JTAG port exactly on the board, and
> what's
> >> > the pinout ?
> >>
> >> It's called "J5" next to the (unsoldert) USB-Port.
> >>
> >> http://nas-2000.org/mwiki/index.php?title=Image:Board_port.png
> > <http://nas-2000.org/mwiki/index.php?title=Image:Board_port.png>
> >>
> >> No idea about the Pinout -> Alfred, Jerkball?
> >>
> >> --
> >> flip
> >>
> >> >
> >> > - Alex
> >> >
> >> >
> >> >
> >>
> >> Hi,
> >>
> >> pinout should be like ARM-JTAG Wiggler compatible port.
> >>
> >> 3V3 1 2 3V3
> >> NTRST 3 4 GND
> >> TDI 5 6 GND
> >> TMS 7 8 GND
> >> TCK 9 10 GND
> >> 11 12 GND
> >> TDO 13 14 GND
> >> 15 16 GND
> >> DBGRQ 17 18 GND
> >> DBGAC 19 20 GND
> >>
> >> I could not get useful communication through JTAG till now,
> >> Alfred
> >>
> >> --------
> >>
> >> Hi,
> >> for being able to access the CPU through ARM compatible JTAG you need
> to
> >> short the two pins where R160 is missing.
> >>
> >> But be very careful when soldering on the board!
> >> ESD may damage the board.
> >> http://en.wikipedia.org/wiki/Electrostatic_discharge
> >>
> >> Good luck,
> >> Alfred
> >
> >
> >
>
>
> --
> Always code as if the guy who ends up maintaining your code will be a
> violent psychopath who knows were you live.
> Damian Conway - Perl Best Practices
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