I got it working with jtag_khz 10 command. It seems that when C100 runs at 24MHz, default JTAG speed is too fast.
I have another question. When JTAG dongle (I use Olimex) first connects to the board it asserts srst signal even before jtag chain scan. Is there a way to turn it off. I would like to be able to connect to the target to see its state. The only way I can do this now is by disconnecting srst from board reset. Also, is there a way to set how long the srst is kept asserted? Thanks, --Michal On Sun, 2009-08-16 at 13:40 +0200, Øyvind Harboe wrote: > On Wed, Aug 5, 2009 at 12:43 AM, michal smulski<michal.smul...@ooma.com> > wrote: > > > > When I erase flash from which arm11 boot, I can no longer attach to JTAG > > port of the the arm11. I can still scan-out the the two cores but then > > jtag_validate_chain() reports errors (see debug output). > > > > With a valid image (that basically set plls, ddr, not etc.) I can attach > > to the arm11 via JTAG. > > This is not surprising. Perhaps you need to use a MUCH lower frequency > when the PLLs are not set? > > *VERY* target and board specific things could be going on here. > > > _______________________________________________ Openocd-development mailing list Openocd-development@lists.berlios.de https://lists.berlios.de/mailman/listinfo/openocd-development
