Jesse:
This answers most of my questions.
>From what you said, it appears the 9420 is the most cost effective
alternative. Please answer these questions for me:
1. Will the 9420 be able to recover a ts7xxx board from any form of
fis erase command from redboot (say there are some over curious users)?
(assume no hardware failure/operator error)...
2. is an 8 or 16 pc104 bit pass thru connector required to use the 9420?
3. I noted on http://www.embedded.com/epc/prod_PER.htm that the
description states 32 mB Disk on Chip for storage***BUT*** the actual
hardware description of the 9240 says 8mB flash used for
bootloader,linux and flash... Is there an error on the site?
4. How can the customer(if they can) reprogram the CPLD? If they
cannot then how do you do it?(eg. jtag?)
5. What function does the reserved flash address 0x60000000 -
0x60062000 perform???
6. What is the major factor that is holding up the release of the
little board (1" x 1") you've created that sits on the DI"?
Thank you in advance....
--- In "Jesse Off" <> wrote:
>
> >
> > Wow!
> >
> > I guess Technologic would be the first place to start.... The job
> > would be much easier if they would provide detailed info about the
> > jtag interface - starting with: "Is this a good idea? Will it work
> to
> > reflash the boards?" :-)
>
> We would gladly accept contract work projects whose end-goal is
> something open-source.
>
> The flash JTAG interface is not hooked up anywhere, so you can't
> program flash using that. If you hook up the embedded trace JTAG on
> the CPU-- well then perhaps you could make the processor run opcodes
> to program flash but that sounds complicated.
>
> We use TS-9420 boards to write the initial flash in production.
> http://www.embeddedarm.com/epc/ts9420.htm. This contains a 8Mbyte
> strataflash that overrides the bootup of the processor. We use this
> because its fast and we can just boot to Linux and pull the latest
> images off NFS and use the MTD drivers to write the flash rather
> than rolling our own low-level flash write code.
>
> We also can boot the boards with a little board (1" x 1") we've
> created that sits on the DIO header and can override the CPU bootup
> through SPI. This isn't for sale yet though we have been toying
> with the idea of releasing it as a lower-cost alternative to using
> the TS-9420 blast board. Currently we use it for custom boards that
> don't have the PC104 bus or as a way to save about 20 LUTs on the
> glue logic CPLD.
>
> All new boards we've created we arm the watchdog for 8 second expiry
> to give time to serial bootup. The 1 second arming at bootup was an
> unfortunate "feature" on the TS-7200.
>
> If the price of the TS-9420 board is at issue, perhaps this
> community could purchase 1 together and mail it around/rent it out
> as needed among members?
>
> //Jesse Off
>
>
> >
> > I'm not sure what you call jtag-ICE - what I have is a simple flash
> > utility. It is not a debugger or emulator by any means; it has no
> > hooks for runtime debugging.
> >
> > If the intent is to reflash a dead board or flash a custom image
> to a
> > new board, the debrick utility I've worked with would make a good
> > starting point; AFAIK all it would need is some detailed
> information
> > on the type and organization of the various TS boards.
> >
> > --Yan
> >
>
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