JTAG registers of stacked-flash

[bastian]

Posted on August 01, 2006 at 08:04

JTAG registers of stacked-flash

[bastian]

Posted on May 17, 2011 at 09:30

Hi,

I'd like to try to erase my flash using jtag. But so far

I did not find any infos about the jtag commands.

Anyone got a link ?

Edited:

Found it on the st912 page. Now trying if I can get on the flash using j-link.

[ This message was edited by: 42Bastian on 28-07-2006 17:26 ]

[md1]

Posted on May 17, 2011 at 09:30

Hi,

There is a seperate STR9 flash programming manual available from this website.

Martin.

[bastian]

Posted on May 17, 2011 at 09:30

�es, found it.

Now , as I wrote, I have to figure out how to attack it.

My only device I have is a J-Link with some SW. But so far I don't

seem to have the correct codes sent. I even do not get the IDCODE.

My computer has no parallel port anymore, so the ST JTAG solution

does not work.

I am close to using another ARM board :)

[sjo]

Posted on May 17, 2011 at 09:30

What software are you using with the JLINK, is it not IAR ? Perhaps you are using the free gdb server available on the net.

The jtag config of the str9 is as follows:

3 taps are present, scan chain (ir 5 bits), arm966 core (ir 4 bits) and flash controller (ir 8 bits).

I have added support to Openocd for the str9 and this should be available in svn very soon.

Also the str9 (arm966) is a strange beast, the monitor mode is enabled at reset ? unlike other arm9 cores. This has to be disabled before breakpoints etc can be enabled.

Regards

sjo

[bastian]

Posted on May 17, 2011 at 09:30

I downloaded a SW collection from segger.

Anyway I will look at openOCD.

I meanwhile als tried iSystem, but so far I have no luck in getting anything meaningfull

back from either my str9 nor from a LPC2294.

I am really close to writing my own tool.