Hi Nikolaus,
How did you damage it ? That is not easy.
- You could try the reset button at bottom. If you are lucky your jz4730 was
only stuck and will be able to boot again.
Some other info and hints:
- Could be the LPC915F MCU is companion for boot ?
http://projects.kwaak.net/twiki/bin/view/Epc700/HardwareLayout
- Check some debug info on simular debug boards
ftp://ftp.ingenic.cn/4hw/01_DEV_board/DB4730_Libra/DB4730_Libra-SW-EN.pdf
- Flashing yourself via JTAG could be difficult, because you need to have some
flasher tool and the original uboot.
Check ingenic manual.
tp://ftp.ingenic.cn/3sw/00tools/jdi/manual/JDI-Manual_EN_1.4.pdf
- Ask on dutch forum for http://trendtac.hyves.nl/
- Login to irc.freenode.net #mipsbook ask person there.
Hopefully you'll fix it.
Grt Ruben.
> From: h...@computer.org
> To: mipsbook-devel@linuxtogo.org
> Date: Thu, 10 Jun 2010 19:36:21 +0200
> Subject: [Mipsbook-devel] how to recover U-Boot...
>
> Although I have not verified by connecting a serial console, it looks
> as if I have damaged the NAND partition with U-Boot while
> experimenting with yaffs2 drivers :(
>
> Now, I can't boot the machine any more. it does no longer respond to
> different Fn keys as described at
> http://projects.kwaak.net/twiki/bin/view/Epc700/UbootStuff
> ).
>
> Looking into the datasheets gave initial hope - but only the JZ4740
> has an internal Boot ROM that can boot from USB (by exposing the
> device as a client to a host). The JZ4730 can only boot from NAND or a
> connected ROM. So if bootsel is hardwired (I assume it is) and there
> is no external ROM (we have no info about such a thing), only JTAG
> remains.
>
> Any ideas? Hints? Experiences? Experienced guys to contact?
>
> BR,
> Nikolaus
>
>
>
>
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