#u-boot on 2024-06-25 — irc logs at libera.irclog.whitequark.org

2024-06-24 19:30 Tartarus changed the topic of #u-boot to: SOURCE MOVED TO https://source.denx.de/u-boot/u-boot.git / U-Boot v2024.04, v2024.07-rc5 are OUT / Merge Window is CLOSED, next branch is OPEN / Release v2024.07 is scheduled for 01 July 2024 / Channel archives at https://libera.irclog.whitequark.org/u-boot

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08:06 <LeSpocky> is it possible to debug u-boot with a j-link over jtag? like stepping through the code with gdb?

08:06 <LeSpocky> could not find anything on the in the documentation

08:08 <marex> LeSpocky: https://www.slideshare.net/slideshow/embedded-recipes-2019-introduction-to-jtag-debugging/177511981 slide 19 onward

08:09 <LeSpocky> marex: this is nice, thank you :-)

08:10 <marex> LeSpocky: this came from the original wiki where it was written for BDI2000

08:10 <pivi> ahhh, BDI2000

08:11 <LeSpocky> I need to do it on at91 sama5d2, but need the more general concepts first, I'll see how far I can get

08:11 <pivi> I used it 1billion years ago at my first real job

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08:11 <marex> pivi: btw before I forget ...

08:11 <marex> pivi: MX8MM Verdin CAN patch ... is anything still open there ?

08:11 <marex> pivi: I _think_ I replied

08:12 <pivi> marex: let me check

08:12 <marex> pivi: ... I still have my BDI2000 :)

08:12 <pivi> marex: https://lore.kernel.org/all/20240523150359.GA18323@francesco-nb/#t

08:14 <pivi> marex: I just used the one owned by my company at that time, MPC8260. With U-Boot, of course. I am doomed by it since ever ;-)

08:16 <marex> pivi: sigh, that one I totally missed, thanks for pointing it out to me

08:17 <pivi> marex: BTW, coming to Vienna in september?

08:17 <marex> pivi: yes, see you there ?

08:18 <pivi> marex: yes, absolutely

08:24 <marex> LeSpocky: https://web.archive.org/web/20141224200032/http://www.denx.de/wiki/view/DULG/DebuggingUBoot is where that originally came from

08:26 <LeSpocky> nice to know

08:33 <marex> pivi: patch is out, I hope I didn't mess it up this time again

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13:51 <LeSpocky> marex: got it running with `JLinkGDBServer -device ATSAMA5D27C` and cross gdb from my toolchain … should document what I've done somewhere ^^

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15:01 <LeSpocky> fwiw, this howto was also of help: https://boundarydevices.com/debugging-using-segger-j-link-jtag/

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15:06 <marex> LeSpocky: should be a patch to doc/

15:06 <LeSpocky> sounds reasonable

15:06 <LeSpocky> will make a draft in my personal notes first though

15:06 <LeSpocky> in the end it was easier than I thought

15:10 <Sout_> so you can use openocd, with a jlink.

15:11 <LeSpocky> you probably can, I did not use it though

15:14 * cambrian_invader has also used openocd with his j-link

15:14 <cambrian_invader> the nice thing is you can easily switch to another debugger if e.g. you want to use something cheaper for production programming

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15:22 <LeSpocky> using openocd would certainly be an interesting side quest, but my motivation for that is low, because I never used openocd before, and just for the sake of learning another tool? probably not.

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15:29 <Clamor> U-Boot does not boot for me if text env is defined in .config fragment but boots fine if define it in defconfig. Has anyone faced a similar issue?

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19:35 <marex> LeSpocky: I used openocd with jlink, it worked well

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20:10 <LeSpocky> marex: I don't doubt that. Had a short look into openocd today, and there was no quickstart in the docs, I read I would have to write a config file first, and so I gave jlinkgdbserver a try and it worked right away *shrug*

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20:44 <marex> LeSpocky: clone git repo ; ./bootstrap.sh && ./configure && make -j `nproc`

20:44 <marex> LeSpocky: ./src/openocd -s tcl/ -f tcl/interface/ftdi/flyswatter2.cfg -f tcl/target/imx8m.cfg -c "adapter speed 10000" -c "reset_config trst_and_srst" -c "jtag_ntrst_delay 20"

20:44 <marex> LeSpocky: telnet localhost 4444 (or 3333 ? or 5555 ?) one of them is GDB, the other is telnet, the other is something else, see output from ^

20:44 <marex> LeSpocky: see tcl/interfaces for list of interfaces , one of them is also jlink

20:44 <marex> LeSpocky: see tcl/targets for list of supported targets , pick one you want

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