On 12/05/2010 03:41 AM, Enrico Scholz wrote:
> Paul Richards<paulr...@gmail.com> writes:
>
>> Are there any plans to add support for the Marvell Armada processor
>> family to Open OCD? (A hybrid of Feroceon and XScale processors from
>> what I understand).
Has any work been done on support for the Marvel Armada XP Series?
-piet
>>
>> I've had a little success customising scripts to communicate with an
>> Armada PXA168 target via a FT4232 interface, though I believe code
>> additions will be required. Although new to OpenOCD I'm willing to
>> contribute what I can if no similar activities are already underway.
>
> Base operations are already possible by
>
> ---
> jtag newtap $_CHIPNAME aux -irlen 1 -ircapture 0x1 -irmask 0x01 -disable
> jtag newtap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0x0f -disable
> jtag newtap $_CHIPNAME bs -irlen 9 -ircapture 0x1 -irmask 0x1ff -expected-id
> $_CPUTAPID
>
> set _TARGETNAME $_CHIPNAME.cpu
>
> jtag configure $_CHIPNAME.aux -event tap-enable {}
>
> jtag configure $_CHIPNAME.cpu -event tap-disable "
> irscan $_CHIPNAME.bs 0x98
> drscan $_CHIPNAME.bs 16 0x00
>
> jtag tapdisable $_CHIPNAME.aux
> "
>
> jtag configure $_CHIPNAME.cpu -event tap-enable "
> jtag tapenable $_CHIPNAME.aux
>
> irscan $_CHIPNAME.bs 0x98
> drscan $_CHIPNAME.bs 16 0x0a
> "
>
> jtag configure $_CHIPNAME.bs -event setup "
> jtag tapenable $_CHIPNAME.cpu
> "
>
> target create $_TARGETNAME dragonite -endian $_ENDIAN -chain-position
> $_TARGETNAME
> ---
>
> see [1] for full configuration. The trick is the first dummy TAP which
> is mentioned in some errata entry (an extra TDO is shifted in concatening
> mode).
>
> I wrote a NAND driver for the PXA168 (see [2]; PXA320 should be very
> similar btw) but it is very slow and although I intended to keep it as
> general as possible, I ended with hardcoding certain values of the used
> NAND chip. Bad block management is missing too.
>
>
> Enrico
>
> Footnotes:
> [1] http://www.cvg.de/people/ensc/trizeps6.conf
> [2] https://github.com/ensc/openocd/commits/master
------------------------------------------------------------------------------
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and
threat landscape has changed and how IT managers can respond. Discussions
will include endpoint security, mobile security and the latest in malware
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
_______________________________________________
OpenOCD-devel mailing list
OpenOCD-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/openocd-devel
