I've been trying to get a trace out of my DM355 with ETM v1.3 and ETB; I've been reading ARM IHI0014O and the OOCD source code but struggling to get a trace out.
ETM is configured in target/ti_dm355.cfg and I try to setup a trace as follows: # (power board on) reset init # setup trace to always-on ref IHI0014O p. 3-41 "Tracing all memory" reg ETM_trace_resource_ctrl 0 reg ETM_trace_en_ctrl1 0x1000000 reg ETM_trace_en_ctrl2 0 reg ETM_trace_en_event 0x6f etm start resume etm status reg ETM_status If I understand the datasheet correctly I want to see ETM_status bit 2 set (Trace stop/start status bit). "etm status" always shows "etb: idle". Whatever I do, "etm analyze" always comes back empty. I added a print which shows me that ctx->trace_depth is always 0. I have also tried setting the trigger like this (inside a small idle loop in u-boot) reg ETM_trig_event 0 reg ETM_addr_1_comparator_value 0x8108a7ec reg ETM_addr_1_access_type 0x19 but that has no obvious effect. Anyone who has successfully used the ETM/ETB with OpenOCD I'd love to hear any recipies, online documentation, etc. etm info reports: > etm info ETM v1.3 pairs of address comparators: 4 data comparators: 2 memory map decoders: 8 number of counters: 2 sequencer present number of ext. inputs: 4 number of ext. outputs: 1 FIFO full present protocol version: 7 max. port size: 16 half-rate clocking not supported full-rate clocking supported normal trace format supported multiplex trace format not supported demultiplex trace format not supported FIFO full supported Thanks, -- Jon Povey jon.po...@racelogic.co.uk Racelogic is a limited company registered in England. Registered number 2743719 . Registered Office Unit 10, Swan Business Centre, Osier Way, Buckingham, Bucks, MK18 1TB . The information contained in this electronic mail transmission is intended by Racelogic Ltd for the use of the named individual or entity to which it is directed and may contain information that is confidential or privileged. If you have received this electronic mail transmission in error, please delete it from your system without copying or forwarding it, and notify the sender of the error by reply email so that the sender's address records can be corrected. The views expressed by the sender of this communication do not necessarily represent those of Racelogic Ltd. Please note that Racelogic reserves the right to monitor e-mail communications passing through its network _______________________________________________ Openocd-development mailing list Openocd-development@lists.berlios.de https://lists.berlios.de/mailman/listinfo/openocd-development
