21:19 <polprog> hi, ive got a board with an arm cortex a8 (s5pv210) and id like to use opencd with it.. it autodetects one tap but im not sure what kind of tap is it

21:19 <polprog> Info : JTAG tap: s5pv210.tap tap/device found: 0x1ba00477 (mfg: 0x23b (ARM Ltd), part: 0xba00, ver: 0x1)

21:20 <polprog> I'm looking at files for ti omap in a BeagleBone and it has three taps, one of them is the DAP used for debugging

21:20 <polprog> what do i need to know to get access to the DAP?

21:21 <PaulFertser> polprog: TI parts are known to lack DAP info ROM tables so you need to manually provide debug base etc, you should be able to find them in the datasheet/reference manual.

21:22 <PaulFertser> polprog: probably you can find config files for some other jtag software and infer needed values from it.

21:25 <polprog> allright, and then based on that I define the taps in my config file for this cpu?

21:25 <PaulFertser> ../( Dial-up modems were cool but AT command set is a real mess, especially with GSM modules

21:25 <polprog> (its the only device in the chain)

21:26 <PaulFertser> polprog: you likely have just one JTAG tap (according to results of autodetection) and then this TAP is used as a transport for ARM debug protocols, so you define a DAP on top of it, and then a target CPU on top of DAP.

21:28 <polprog> got it, thanks!

21:28 <polprog> ill ask questions when i find how some other debugger does it with this cpu

21:29 <PaulFertser> polprog: you can probably just experiment based on data used for similar targets

21:31 <polprog> thats my approach too but the only similar thing i see is samsung_s3*.cfg

21:31 <polprog> ill take a look at these files

21:33 <polprog> these are 920t or 7tdmi or 11 cores

21:34 <polprog> s3c4510.cfg looks the most similar, its arm7tdmi

21:34 <PaulFertser> polprog: just try minimal config. This part might have proper DAP ROM table so might be able to autodetect dbgbase.

21:34 <PaulFertser> polprog: try defining dap on top of this tap and then cortex_a target.

21:35 <PaulFertser> polprog: like imx51.cfg but without other taps

21:37 <polprog> Info : s5pv210.cpu: hardware has 6 breakpoints, 2 watchpoints

21:38 <polprog> is this from the config or from the DAP ROM?

21:41 <PaulFertser> polprog: very good

21:41 <PaulFertser> polprog: that's from examination of the debug unit that was connected to thanks to info from DAP tables.

21:41 <polprog> i got the romtable under 'dap info'

21:41 <polprog> fantastic

21:42 <polprog> now to get arm gdb on debian ;)

21:42 <PaulFertser> polprog: gdb-multiarch

21:42 <polprog> youd think

21:42 <PaulFertser> polprog: that's how it's called on Debian, yes

21:46 <polprog> nevermind.. it installs as "gdb-multiarch", not "gdb"

21:47 <polprog> great, i can see the memory and registers. Thank you very much :)

21:50 <PaulFertser> polprog: glad to hear, I hope your research is going to be fruitful

22:13 <polprog> im getting some weird errors when trying to single step

22:13 <polprog> Error: data abort at 0x00000000, dfsr = 0x00000017

22:24 <polprog> goodnight