I made some progress. I successful applied the device tree overlay and BL31 firmware. Now, the hypervisor did see the reserved memory and starts loading with a mainline 5.9 PREEMPT_RT patched kernel. (I did add the extra EXPORT_SYMBOLS for this to work.) Not yet tested with any additional cell.
Thank you guys for the hints on the device tree fix. I also tried the jailhouse-image repository, that works fine too. I would like to ask an additional question: Why is it necessary to load a custom BL31 firmware instead of the in EEPROM one? Is it for the PSCI CPU on/offlining? --- Yang 2020年12月7日月曜日 16:17:44 UTC+9 Chung-Fan Yang: > > > 2020年12月7日月曜日 15:14:50 UTC+9 [email protected]: > >> On 07.12.20 02:29, Chung-Fan Yang wrote: >> > Thanks you for the suggestion of using an approved image. >> > I will try it out. >> > >> > However, I really like to know the root cause and get the current >> Debian >> > setup working. >> >> [1] officially supports the RPi4 on buster (despite the pain that >> brings, hope 5.10 improves the situation at bit). You should derive from >> that, specifically the DT overlay-based memory reservation which was >> fixed not so long ago. >> > > Thank you. > I see the commit now. > So basically I have to include an additional dtbo the the boot process, am > I right? > Will it work only on the device-tree from rpi-firmware or also the in > kernel-tree one? > I am currently using the in-tree device tree from kernel 5.9 without any > overlay. > > By the way, by pain, what do you mean? > > --- > Yang > > >> >> For the kernel, I didn't do a rebase of your patch series yet. [2] is >> the latest upstream based queue. >> >> Jan >> >> [1] https://github.com/siemens/jailhouse-images >> [2] >> >> http://git.kiszka.org/?p=linux.git;a=shortlog;h=refs/heads/queues/jailhouse >> >> > >> > Yang >> > >> > >> > 2020年12月7日月曜日 5:01:26 UTC+9 [email protected]: >> > >> > Check our GSoC project on Automotive Grade Linux: >> > >> https://git.automotivelinux.org/AGL/meta-agl-devel/tree/meta-agl-jailhouse >> > < >> https://git.automotivelinux.org/AGL/meta-agl-devel/tree/meta-agl-jailhouse> >> >> > >> > It can build for PI. >> > >> > An it can serve as inspiration for the values needed. >> > >> > >> > >> > >> > js >> > >> > Chung-Fan Yang <[email protected]> schrieb am So., 6. Dez. 2020, >> 17:34: >> > >> > Hi, >> > >> > I am working to get jailhouse work with my R-Pi4. >> > >> > I have been using a 64bit Debian buster rootfs with >> > a custom compiled 5.9 preempt-rt kernel. >> > >> > I have successful reserved >736M for jailhouse and inserted the >> > jailhouse.ko, but when I do jailhouse enable I got the following >> > error on uart. >> > >> > Any suggestions are appreciated. >> > >> > Initializing Jailhouse hypervisor v0.12 (223-g097bed0f) on CPU 1 >> > Code location: 0x0000ffffc0200800 >> > Page pool usage after early setup: mem 39/994, remap 0/131072 >> > Initializing processors: >> > CPU 1... >> > FATAL: Unhandled HYP exception: synchronous abort from EL2 >> > pc: 0000ffffc0203864 lr: 0000ffffc0203850 spsr: 200003c9 EL2 >> > sp: 0000ffffc0222e40 elr: 0000ffffc0203864 esr: 00 1 0000000 >> > x0: 0000000084000000 x1: 0000000000000000 x2: 0000000080003580 >> > x3: 0000000000000014 x4: 0000000000000002 x5: 0000000000000001 >> > x6: 0000000000000029 x7: 0000ffffc0219ec0 x8: 000000000000002a >> > x9: 0000000000000000 x10: 0000000000000000 x11: 0000000000000001 >> > x12: 0000000000000015 x13: 0000000000000001 x14: 0000ffffc0219000 >> > x15: 0000ffffc0015040 x16: 0000ffffc020da50 x17: ffffaf45951e7518 >> > x18: 0000000000000001 x19: 0000ffffc0222000 x20: 0000ffffc0219000 >> > x21: 0000ffffc0200000 x22: 0000ffffc0219000 x23: 0000000000000001 >> > x24: 0000000000000001 x25: 0000ffffc0222000 x26: 0000ffffc0223000 >> > x27: 0000ffffc020f000 x28: 0000ffffc0218000 x29: 0000ffffc0222e40 >> > >> > Hypervisor stack before exception Stopping CPU 1 (Cell: >> > "Raspberry-Pi4") >> > >> > PS. I did noticed there is a similar post, but it has no solution. >> > >> > -- >> > You received this message because you are subscribed to the >> > Google Groups "Jailhouse" group. >> > To unsubscribe from this group and stop receiving emails from >> > it, send an email to [email protected]. >> > To view this discussion on the web visit >> > >> https://groups.google.com/d/msgid/jailhouse-dev/f0e8ee0a-e874-428e-a97c-91524477c7e1n%40googlegroups.com >> >> > < >> https://groups.google.com/d/msgid/jailhouse-dev/f0e8ee0a-e874-428e-a97c-91524477c7e1n%40googlegroups.com?utm_medium=email&utm_source=footer>. >> >> >> > >> > -- >> > You received this message because you are subscribed to the Google >> > Groups "Jailhouse" group. >> > To unsubscribe from this group and stop receiving emails from it, send >> > an email to [email protected] >> > <mailto:[email protected]>. >> > To view this discussion on the web visit >> > >> https://groups.google.com/d/msgid/jailhouse-dev/126f7b0c-2fa6-4329-bb95-bddead90c9f7n%40googlegroups.com >> >> > < >> https://groups.google.com/d/msgid/jailhouse-dev/126f7b0c-2fa6-4329-bb95-bddead90c9f7n%40googlegroups.com?utm_medium=email&utm_source=footer>. >> >> >> > -- You received this message because you are subscribed to the Google Groups "Jailhouse" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/jailhouse-dev/0031a2f2-07ed-453e-924a-8b9756af8ff9n%40googlegroups.com.
