Hi,

There is a problem with your JTAG link or chain. The important line is: - TARGET: Bypass check: 0x000000001 => 0x00000000 It says roughly: (as you know, a JTAG chain is let say "a serial link looped") After setting all JTAG controllers into the JTAG chain to bypass mode, I sent a 1 (only 1 bit) and tried to get back this bit ... but in your case without success!

Regards - Luc

-----Original Message----- From: u-boot-users-admin@lists.sourceforge.net [mailto:u-boot-users-admin@lists.sourceforge.net] On Behalf Of Hinko Kocevar Sent: jeudi 20 janvier 2005 15:51 To: u-boot-users@lists.sourceforge.net Subject: [U-Boot-Users] BDI2000 with pxa255

Hi,

I've connected bdi2000 to the host computer and successfully updated firmware and managed to telnet to the bdi. I also adapted cfg file for my platform (KK trizeps2). When I power up the target device I get this error: ... - TARGET: target will be restarted in 10 sec - TARGET: processing reset request - TARGET: BDI asserts RESET and TRST - TARGET: BDI removed TRST - TARGET: Bypass check: 0x000000001 => 0x00000000 - TARGET: JTAG exists check failed # TARGET: resetting target failed # JTAG: communication with target failed - TARGET: target will be restarted in 10 sec ...

Can somebody point me to the possible causes for this behaviour?

PS. Is it mandatory to supply ~RESET pin to BDI? Can I just keep it in reset with a jumper closed? Trizeps2 is lacking this pin on JTAG connector.

best regards, hk