On Tuesday 12 January 2010, David Brownell wrote: > On Tuesday 12 January 2010, Alexei Babich wrote: > > Error: 'arm11 target' JTAG error SCREG OUT 0x1f > > Error: 'arm11 target' JTAG error SCREG OUT 0x1f > > Error: 'arm11 target' JTAG error SCREG OUT 0x1f > > Error: DPM REG READ -- fail -4 > > Error: 'arm11 target' JTAG error SCREG OUT 0x1f > > Error: 'arm11 target' JTAG error SCREG OUT 0x1f > > ... > > What can it be? > > The real quick answer is that for some reason you're > receiving all-ones (0x1f) back from a JTAG scan while > switching to another scan chain ... when the chip > is required to return a different value (0x10). > > I'd guess it's trying to read a register like DSCR, > polling for status changes, but that's just a guess > at this point.
Just FYI ... I tried on a different ARM1136, and the current code is misbehaving. I'll be spending a bit of time sorting it out. Yes, DSCR read is the problem here. - Dave > Now, that version you're using isn't all that old, > and I don't think anything much has changed since > then in that area, but you should try this with > the latest code. > > Also, try to get us more information by posting > a "debug_level 3" log. > > - Dave > > _______________________________________________ Openocd-development mailing list [email protected] https://lists.berlios.de/mailman/listinfo/openocd-development
