Your board is not damaged, but its not going to boot again until its flash
can be reprogrammed. The serial boot won't work as-is because in standard
units the watchdog boots up armed and if it can't be reset within two
seconds of bootup, it resets the board. You can send the board back to
Technologic Systems to be reprogrammed.
The other way is to purchase a 7200 "blaster" daughter board. When this
board is attached onto the PC104 bus, the 7200 CPLD will detect it and
rearrange memory space such that the daughter board's flash hijacks the boot
process. This board is sold for some of our high volume customers to aid in
their manufacturing process to enable fast custom reprogramming of flash and
is also what we use internally to run bring-up tests over NFSROOT and to put
the initial programming on the CPU boards. The Linux kernel will detect
both the blast board's flash and also the bottom board flash and present
both flash chips as MTD devices that can be separately (re)programmed with
the "dd" command.
//Jesse Off
> Greetings,
>
> "mount -t jffs2 /dev/mtd0 /mnt/flash" killed my board :( It began to
> erase block, hit ctrl+c, but too late. I can't boot anymore now.
> So i enabled JP1, and setted minicom to 9600 8N1 (no hardware control
> flow) :
> - '<' caracters are displayed continuously
> - red led is blinking, green led is lit (even with no DB9 cable wired)
>
> This continuous loop of '<' is suspicious. I tried to send "CRUS" + 2048
> bytes. Nothing happend. The EP9301ref manual says that a '>' should
> appear. I hope that nothing is damaged.
>
> Is a logical way, a '<' should be displayed and then wait for "CRUS" +
> 2048 bytes and then display '>'.
> Does Cirrus provide some stuff for recovering and empty flash ?
>
> What about the test/factory jumper, can I use it to health-check my board
> ?
>
> Help is hardly welcome.
>
> Matthieu
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>
>
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