On Thu, 4 Apr 2019 17:38:15 -0400 Gene Heskett <gheskett@xxxxxxxxxxx> wrote: > On Thursday 04 April 2019 17:16:04 E. Liddell wrote: > > > On Thu, 4 Apr 2019 08:01:11 -0400 > > > > Gene Heskett <gheskett@xxxxxxxxxxx> wrote: > > > Actually. jessie on the pi wasn't too bad. I am > > > actually getting things done with it. But info on the wintel stuff > > > is common knowledge. Want to replace the armhf (pi) or arm64 > > > (rock64) kernel with a realtime version? Nobody else sees the need, > > > so your questions get ignored, not answered by the people who do > > > have it all figured out. Thats BS. > > > > For the pi, shouldn't it just be a matter of following your distro's > > build-your- own-kernel instructions, using the pi-specific kernel > > sources and base config, and applying the rt patchset on top? > > No clue, I built it for the rock64, on the rock64, useing the patches > from the linux-rt mailing list links, but when I asked how to install > it, 3 times over about as many weeks, and got ignored, I gave up. Their > propaganda says good support, but AFAIWC, there isn't any. But the pi > is only very marginally better. Bulding an rt kernel on the pi is a > several hour project, on the rock64 its about 30 minutes, which amply > demo's the difference in speeds. Too bad I cannot use it. Neither has > any docs available to aid the hacker. Those are proprietary designs. > Run the linux they supply, or go pound sand. The pi is quite well-documented, except for the internals of a couple of hardware blobs. The rock64 . . . a quick search suggests much less documentation is available, and the detailed tech-spec stuff seems to be in Chinese, which is no help. Scour /boot for the existing kernel, that's all I can advise--it should be in there somewhere. If you're still interested in setting up the pi, it expects to find the kernel with a fixed filename in the boot partition. It also needs some auxiliary files in there. Here's what the boot section of the Gentoo image I assembled for my pi3 looks like: ryu ~ # ls -l /mnt/data/armchroot/boot/ total 16376 -rw-r--r-- 1 root root 15992 Dec 6 19:22 bcm2710-rpi-3-b.dtb -rw-r--r-- 1 root root 50268 Dec 6 19:22 bootcode.bin -rw-r--r-- 1 root root 48 Dec 6 20:42 cmdline.txt -rw-r--r-- 1 root root 2527 Dec 6 19:22 fixup_cd.dat -rw-r--r-- 1 root root 6635 Dec 6 19:22 fixup.dat -rw-r--r-- 1 root root 9770 Dec 6 19:22 fixup_db.dat -rw-r--r-- 1 root root 9768 Dec 6 19:22 fixup_x.dat -rw-r--r-- 1 root root 4233216 Dec 6 19:09 kernel7.img drwxr-xr-x 2 root root 4096 Dec 6 19:22 overlays -rw-r--r-- 1 root root 641252 Dec 6 19:22 start_cd.elf -rw-r--r-- 1 root root 4974116 Dec 6 19:22 start_db.elf -rw-r--r-- 1 root root 2840612 Dec 6 19:22 start.elf -rw-r--r-- 1 root root 3923364 Dec 6 19:22 start_x.elf The kernel is kernel7.img (older pis may expect kernel.img instead). The rest of the files are the pi's firmware packet, from github. E. Liddell --------------------------------------------------------------------- To unsubscribe, e-mail: trinity-users-unsubscribe@xxxxxxxxxxxxxxxxxxxxxxxxxx For additional commands, e-mail: trinity-users-help@xxxxxxxxxxxxxxxxxxxxxxxxxx Read list messages on the web archive: http://trinity-users.pearsoncomputing.net/ Please remember not to top-post: http://trinity.pearsoncomputing.net/mailing_lists/#top-posting
