Hello Holger, Try set EMU0/1 to L L (0:0) instead of H H that is factory default. Now ARM is on scan chain without need to setup ICEPick.
then disable SCANINIT lines and define scan chain, like this: SCANPRED 1 6 ;ICEPick TAP is before ARM926 core SCANSUCC 1 4 ;ETB TAP is after ARM926 core Best regards, Yaron Leizerovich Sightsys Ltd. - development tools and instrumentation. -----Original Message----- From: [email protected] [mailto:[email protected]]On Behalf Of Holger Brunck Sent: Tuesday, March 29, 2011 9:40 AM To: [email protected] Cc: Heiko Schocher; Detlev Zundel Subject: BDI2000 cfg for Sitara AM17x EVM Hi all, I got an Sitara AM17x EVM on my desk and try to get it up and running with an BDI2000. The BDI comes up with an error msg: # JTAG: communication with target failed - TARGET: target will be restarted in 10 sec - TARGET: processing reset request - TARGET: BDI asserts TRST and RESET - TARGET: BDI removes TRST - TARGET: Bypass check 0x00000001 => 0x00000001 - TARGET: JTAG exists check passed - Core#0: ID code is 0x00000000 - Core#0: ICEBreaker access check failed - Read back is 0x00000000 instead of 0x12345678 # TARGET: resetting target failed # JTAG: communication with target failed I know that there is something special to make the TAP from the ARM CPU visible. On the DaVinci wiki pages I found the following SCANINIT calls: ; Configure ICEPick module to make ARM926 TAP visible SCANINIT r1:w400000:r0 ; toggle reset for 0.4 seconds SCANINIT t1:w1000:t0:w1000: ; toggle TRST SCANINIT i6=07:d8=89:i6=02: ; connect and select router SCANINIT d32=81000082: ; set IP control SCANINIT d32=a018206f: ; configure TAP0 SCANINIT d32=a018216f:cl5: ; enable TAP0, clock 5 times in RTI SCANINIT d32=a018616f:cl5: ; enable TAP0, clock 5 times in RTI SCANINIT i10=ffff ; scan bypass Unfortunately it doesn't work with my Sitara EVM. So this sequence seems only to work for DaVinci boards. Does anyone has a valid BDI2000 configuration for this Sitara board up and running? Any help is appreciated. Best regards Holger Brunck _______________________________________________ Davinci-linux-open-source mailing list [email protected] http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source _______________________________________________ Davinci-linux-open-source mailing list [email protected] http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
