On Thu, 25 Feb 2021 16:33:06 +0100 Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx> wrote: > Hello, > > On 25.02.21 14:02, Jules Maselbas wrote: > > On Thu, Feb 25, 2021 at 09:45:00PM +0900, Stafford Horne wrote: > >> Hello, > >> > >> I am the maintainer of most OpenRISC things right now. I would be happy to > >> help, but I don't really use barebox right now. Most of my deployments I use > >> with litex FPGA SoC's that has its own bootloader. > >> There is barebox for litex SoC with RISC-V CPU core, please see: https://github.com/enjoy-digital/litex/issues/413#issuecomment-609047340 > >> That said, we have a setjmp/longjmp implementation in our glibc port which I > >> have been testing for upstreaming lately. > >> > >> https://github.com/stffrdhrn/or1k-glibc/blob/or1k-port-2/sysdeps/or1k/setjmp.S > >> https://github.com/stffrdhrn/or1k-glibc/blob/or1k-port-2/sysdeps/or1k/__longjmp.S > >> > >> I had a look at the barebox docs and openrisc port, it seems like there is > >> support for our standard platform, or1ksim, which is the same as my de0-nano > >> fpga board/soc and qemu. I should be able to make use of this. > >> > >> Is there a branch where you are doing the green thread work? I could add and > >> test the OpenRISC implementation. > > Hi, > > > > I've done this yesterday, I've push a branch[1] that has the green > > thread paches applied (except patches on usb mass storage gadget). > > https://github.com/jmaselbas/barebox/tree/test_setjmp > > Great. Thanks. I'm preparing an updated version that will clean it up > a bit, but the heart part of architectures providing setjmp/longjmp/initjmp > will stay the same. > > Small request: > If you implement initjmp, could you have it save into jmp_buf a frame > pointer value of NULL if applicable? That way, should backtrace be > implemented (or done via JTAG), they have a defined end. > > Cheers, > Ahmad > > > To test greenthread your can run the `poller -c` command in barebox's > > prompt. To do you you'll need to enable CONFIG_POLLER_YIELD and define > > CONFIG_HAS_ARCH_SJLJ > > > > Best, > > Jules > > > > > > > > _______________________________________________ > > barebox mailing list > > barebox@xxxxxxxxxxxxxxxxxxx > > http://lists.infradead.org/mailman/listinfo/barebox > > > > -- > Pengutronix e.K. | | > Steuerwalder Str. 21 | http://www.pengutronix.de/ | > 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | > Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | > > _______________________________________________ > barebox mailing list > barebox@xxxxxxxxxxxxxxxxxxx > http://lists.infradead.org/mailman/listinfo/barebox -- Best regards, Antony Pavlov _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
