Re: Build Kernel 5.5 RC3 for Raspberry4
On Saturday 04 January 2020 11:14:17 basti wrote:
> ok Nigel,
> the tutorial on
>
> https://gist.github.com/G-UK/ee7edc4844f14fec12450b2211fc886e
>
> is working.
>
> so i have build a 4.19 kernel to boot rpi4. but this is not the
> problem. The main reason I use "real" debian system is the horrible
> kernel name schema on raspbian. that's make the task to do a remote
> kernel update on a system where only ssh access is available more to a
> game of luck then to a administrative task. especial when you need a
> initram to boot like in my case. Or even you have to write a buggy
> wrapper to fix this. In my opinion debian has find a good way for that
> problem.
>
> So i highly prefer this system/kernel and the way it boots. An other
> side effect is that it seems to have a better network stack. I used
> some rpi3 as apt cacher and with debian 64bit there is a better
> performance of the already cached files but is can also be caused on
> the 64bit. I haven't check this very much.
>
> The dtb files build with kernel 4.19 dosen't also work, when i try to
> boot my custom 5.5 kernel. Boot stop at "Run /init as init process"
> but most of the firmware errors seems to be fixed.
In that case you probably did not get them from the right place in the
built kernel tree. Look in arch/yourarch for the correct files.
> So I'am looking forward the day were there is a 5.5 branch on raspberr
> kernel source and try the vanilla/upstream debian kernel again unless
> you have an idea how to fix "Run /init as init process" as described
> above. thanks a look for your help.
I am running it right now with a custom 4.19 preempt-rt kernel over a
raspbian 10.2 (armhf) install, runs linuxcnc great.
>
> On 02.01.20 21:36, Nigel Sollars wrote:
> > Ok cool,
> >
> > So I did some more looking around, perhaps looking at this ( if you
> > have not yet ) might be pertinent,
> >
> > https://gist.github.com/G-UK/ee7edc4844f14fec12450b2211fc886e
> >
> > Nige
> >
> > On Thu, Jan 2, 2020 at 2:02 PM basti <mailinglist@unix-solution.de>
wrote:
> >> thank's for your request. i have try the upstream dtb from
> >>
> >> https://github.com/raspberrypi/firmware/
> >>
> >> same firmware errors. Boot stop at
> >> "Run /init as init process"
> >>
> >> On 02.01.20 19:24, Nigel Sollars wrote:
> >>> Any progress on this?
> >>>
> >>> On Wed, Jan 1, 2020 at 12:09 PM Nigel Sollars <nsollars@gmail.com>
wrote:
> >>>> Looks like device tree's dtb's, as I said seems that your missing
> >>>> alot as per the fist errors ( GPIO's ) and the size difference
> >>>> you saw.
> >>>>
> >>>> more info here
> >>>>
> >>>> https://github.com/raspberrypi/linux/issues/2543
> >>>>
> >>>> with the link pointing here
> >>>>
> >>>> https://github.com/raspberrypi/firmware/tree/master/boot
> >>>>
> >>>> Nige
> >>>>
> >>>> On Wed, Jan 1, 2020 at 6:15 AM basti
<mailinglist@unix-solution.de> wrote:
> >>>>> The kernel was build with
> >>>>>
> >>>>> make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- defconfig
> >>>>> make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- menuconfig
> >>>>> (to check if raspberry pi stuff is enablend)
> >>>>> make -j`nproc` ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu-
> >>>>> bindeb-pkg
> >>>>>
> >>>>> I get also firmware errors when I boot the original ubuntu image
> >>>>> (log attached).
> >>>>> so i think it doesn't matter.
> >>>>>
> >>>>> Boot the debian kernel I miss something like:
> >>>>>
> >>>>> [ 4.541716] mmc0: new ultra high speed DDR50 SDHC card at
> >>>>> address aaaa [ 4.555228] mmcblk0: mmc0:aaaa SC32G 29.7 GiB
> >>>>> [ 4.569103] mmcblk0: p1 p2
> >>>>>
> >>>>> RASPBERRYPI_FIRMWARE is set in kernel config. I'm not sure what
> >>>>> this mean, what steps i have to do that the kernel use the
> >>>>> firmware. In the log attached you can find this:
> >>>>>
> >>>>> [ 0.096980] raspberrypi-firmware soc:firmware: Attached to
> >>>>> firmware from 2019-08-15 12:03, variant start
> >>>>> [ 0.100911] raspberrypi-firmware soc:firmware: Firmware hash
> >>>>> is 9f8431fb7839c7f00f52b81f5822ddab2b31d0db
> >>>>>
> >>>>> which file is used there?
> >>>>>
> >>>>> On 01.01.20 05:23, Nigel Sollars wrote:
> >>>>>> Just took a look at the bootlog there, those GPIO failures
> >>>>>> arnt clever, missing firmware I would take a wild guess that
> >>>>>> things in the latest kernel tree has changed I did also see an
> >>>>>> article about newer support for the Pi 4 in the latest kernel (
> >>>>>> cant remember if its 5.4 or 5.5 ). Do you use 'make
> >>>>>> menuconfig'?. the size difference you mention with those
> >>>>>> errors do point to you not enabling the needful
> >>>>>>
> >>>>>> Looks like 4.19 has been the latest for along time, I would
> >>>>>> diff your 5.5 config with the 4.19 and see what you have
> >>>>>> missing / what has moved / changed. A quick google does not
> >>>>>> yield much so you could be very much on your own / pioneering
> >>>>>> this one.
> >>>>>>
> >>>>>> Hopefully helpful links
> >>>>>>
> >>>>>> Someone to perhaps reach out to for info,
> >>>>>> https://forum.manjaro.org/t/raspberry-pi-4-5-4-1-kernel/114273
> >>>>>>
> >>>>>> 5.5 Graphics / better support by all accounts,
> >>>>>>
> >>>>>> https://www.phoronix.com/scan.php?page=article&item=linux-55-fe
> >>>>>>atures&num=1
> >>>>>> https://www.linux-arm.info/index.php/1537-linux-5-5-lands-broad
> >>>>>>com-bcm2711-raspberry-pi-4-bits
> >>>>>>
> >>>>>> again hope this helps
> >>>>>>
> >>>>>> Nige
> >>>>>>
> >>>>>> On Tue, Dec 31, 2019 at 5:18 AM basti
<mailinglist@unix-solution.de> wrote:
> >>>>>>> Hello,
> >>>>>>>
> >>>>>>> I have try to build kernel for raspi4 from upstream (5.5-rc3).
> >>>>>>> Kernel boot but can't find the SD Card, so there is no
> >>>>>>> partition, no root-fs and end up in initramfs/busybox.
> >>>>>>>
> >>>>>>> Log of serial console is attached. I have used U-boot and dtb
> >>>>>>> from ubuntu image. My dtb build during kernel build is a half
> >>>>>>> size of the ubuntu one and doesn't work.
> >>>>>>>
> >>>>>>> the custom build kernel works on rpi3 out of the box.
> >>>>>>>
> >>>>>>> best regards
> >>>>>>>
> >>>>>>> p.s. i build it as deb package
Cheers, Gene Heskett
--
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soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
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- Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/gene>
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