--- On Wed, 7/14/10, Alex Hornung <[email protected]> wrote:
> It seems that the first jtag scan works > successfully, but subsequent > scans fail miserably. The 'reset' command works > (the device *is* reset) > but it throws an error: > > JTAG scan chain interrogation failed: all ones. > Check JTAG interface, timings, target power etc. Reminds me of problems I saw resetting PXA-255: I have a patch somewhere updating the reset sequence to cope with an error that sometimes cropped up (just like that): first reset was OK, but it crapped on CPU state in such a way that subsequent resets failed (and thus some of the other ops you mentioned) unless the low level reset sequence got tweaked. Since PXA-255 works so poorly for me I never got back to that; plus, nobody else confirmed they saw those issues. Related: The JTAG-EW seems not to be getting much use or attention. - Dave _______________________________________________ Openocd-development mailing list [email protected] https://lists.berlios.de/mailman/listinfo/openocd-development
