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ElRay70K70H
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Joined: 12 Apr 2022
Posts: 17
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 Posted: Sun Apr 24, 2022 7:15 pm Post subject: Installing GenPi64 / gentoo-on-rpi-64bit on USB3 SSD |
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I have an 8GB RPi4 that I am struggling to get Gentoo running on. It has been running Raspain when I got it, then Ubuntu 24-bit and most recently Raspberry Pi OS 64-bit, all from the SSD, all without a hitch
I've tried:and both resulted in an overscanned white/red screen prompting for a net boot, diagnostics, etc. when attempting to boot from the SSD.
Can I write one of the images from GenPi64 / gentoo-on-rpi-64bit to the SSD, edit: | Code: | fstab
config.txt
cmdline.txt |
to reference /dev/sda1 & /dev/sda2 and expect a bootable system?
Alternately, can I write the image to a microSD, copy the rootfs and /boot partitions to the appropriate place on the SSD, edit the previously mentioned files, and boot off the SSD?
The Pi4 is set-up to boot off the microSD if present, and the SSD if not and this has worked through three OSes. |
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NeddySeagoon
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Joined: 05 Jul 2003
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| Posted: Sun Apr 24, 2022 7:26 pm Post subject: |
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ElRay70K70H,
What do you have in your /boot partition now?
What filesystem do you have on /boot?
It sounds like the firmware on the Pi that is supposed to read /boot can't for some reason so it falls back to netbooting.
That the image is overscanned, suggests that /boot/config.txt has not be read.
Please share /boot/config.txt too.
_________________
Regards,
NeddySeagoon
Computer users fall into two groups:-
those that do backups
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ElRay70K70H
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Joined: 12 Apr 2022
Posts: 17
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| Posted: Sun Apr 24, 2022 11:48 pm Post subject: |
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Thanks. | NeddySeagoon wrote: | | … Please share … |
Will do. See below.
The RPi4 is currently in the middle of what was to be the third attempt. This time I walked through the four RPi4-64 bit guides I could find, in parallel, checking against each other and making sure every warning/error was dealt with before moving on. I haven't tried to boot this one yet, maybe I can salvage it before starting over. This means the 'cmdline.txt' and 'config.txt' files below are untested.
What prompted me to look for a "LiveCD" solution and start again was issues with kernels. First, no kernel sources were being pulled-down. I tracked that down to /usr/src/linux being a directory. So I rmdir'ed 'linux' and added 'symlink' to my USE flags. Then I got file collision errors trying to get the raspberry sources and started looking for something more LiveCD-like. Also, at one point, "select kernel list" showed a list of about six variations of the 5.15.32-r1 kernel (rc.local, systemd, desktop, etc.), but no RPi-related kernels. Now it only shows: | Code: | (chroot) piBox /etc # eselect kernel list
Available kernel symlink targets:
[1] linux-5.10.63_p20211029-raspberrypi *
[2] linux-5.15.32-gentoo-r1 |
The 'raspberrypi' kernel is only 5 months old, but it's an odd mid-release of the 5.10 series (the last arm64 5.10 release was 5.10.109).
What kernel should I be running? If I could get a confirmation on which one should be "good", I'll shutdown, pop-out the microSD card and test.
Also, I'm concerned about the firmware. If I look in /lib/firmware, I've got 20 symlinks that the target can't be found. See below.
Current contents of /boot: | Code: | (chroot) piBox / # ls /boot
bcm2708-rpi-b.dtb bcm2710-rpi-3-b.dtb bcm2711-rpi-cm4s.dtb fixup4x.dat kernel8.img start_cd.elf
bcm2708-rpi-b-plus.dtb bcm2710-rpi-3-b-plus.dtb bootcode.bin fixup_cd.dat kernel.img start_db.elf
bcm2708-rpi-b-rev1.dtb bcm2710-rpi-cm3.dtb cmdline.txt fixup.dat LICENCE.broadcom start.elf
bcm2708-rpi-cm.dtb bcm2710-rpi-zero-2.dtb config.txt fixup_db.dat overlays start_x.elf
bcm2708-rpi-zero.dtb bcm2710-rpi-zero-2-w.dtb COPYING.linux fixup_x.dat start4cd.elf
bcm2708-rpi-zero-w.dtb bcm2711-rpi-400.dtb fixup4cd.dat issue.txt start4db.elf
bcm2709-rpi-2-b.dtb bcm2711-rpi-4-b.dtb fixup4.dat kernel7.img start4.elf
bcm2710-rpi-2-b.dtb bcm2711-rpi-cm4.dtb fixup4db.dat kernel7l.img start4x.elf
(chroot) piBox / # |
Current contents of /boot/cmdline.txt: | Code: | (chroot) piBox / # cat /boot/cmdline.txt
console=serial0,115200 console=tty1 root=223ecc81-7069-45f9-9309-c641eba776c8 rootfstype=ext4 fsck.repair=yes rootwait
(chroot) piBox / # |
That is the correct UUID for the rootfs partition: | Code: | (chroot) piBox / # blkid
/dev/mmcblk0p1: LABEL_FATBOOT="boot" LABEL="boot" UUID="E5B6-FD41" BLOCK_SIZE="512" TYPE="vfat" PARTUUID="3a83545e-01"
/dev/mmcblk0p2: LABEL="rootfs" UUID="a4b3ef34-532d-430b-a401-589e4a6a5d2c" BLOCK_SIZE="4096" TYPE="ext4" PARTUUID="3a83545e-02"
/dev/sda1: LABEL_FATBOOT="boot" LABEL="boot" UUID="10EB-30C5" BLOCK_SIZE="512" TYPE="vfat" PARTUUID="d32ad659-01"
/dev/sda2: LABEL="rootfs" UUID="223ecc81-7069-45f9-9309-c641eba776c8" BLOCK_SIZE="4096" TYPE="ext4" PARTUUID="d32ad659-02"
(chroot) piBox / # |
I previously tried using LABEL and '/dev/sda2', but neither worked -- Same Polish Flag Boot Screen
Current contents of /boot/config.txt (commented-out lines deleted to save space): | Code: | (chroot) piBox / # cat /boot/config.txt
disable_overscan=1
hdmi_drive=2
dtparam=audio=on
camera_auto_detect=1
display_auto_detect=1
dtoverlay=vc4-kms-v3d
max_framebuffers=2
arm_64bit=1
gpu_mem=16
[cm4]
otg_mode=1
[pi4]
arm_boost=1
[all]
(chroot) piBox / # |
The current 'make.conf' is: | Code: | (chroot) piBox / # cat /etc/portage/make.conf
# These settings were set by the catalyst build script that automatically
# built this stage.
# Please consult /usr/share/portage/config/make.conf.example for a more
# detailed example.
COMMON_FLAGS="-march=native -mcpu=native -mtune=native -pipe -O2 -ftree-vectorize -fomit-frame-pointer"
MAKEOPTS="-j4"
# Default
CFLAGS="${COMMON_FLAGS}"
CXXFLAGS="${COMMON_FLAGS}"
FCFLAGS="${COMMON_FLAGS}"
FFLAGS="${COMMON_FLAGS}"
# WARNING: Changing your CHOST is not something that should be done lightly.
# Please consult https://wiki.gentoo.org/wiki/Changing_the_CHOST_variable before changing.
CHOST="aarch64-unknown-linux-gnu"
# NOTE: This stage was built with the bindist Use flag enabled
USE="-gui symlink"
# This sets the language of build output to English.
# Please keep this setting intact when reporting bugs.
LC_MESSAGES=C
(chroot) piBox / # |
and 'make.profile' is a symlink to: | Code: | | /var/db/repos/gentoo/profiles/default/linux/arm64/17.0/systemd |
Broken symlinks in /lib/firmware: | Code: | lrwxrwxrwx 1 root root 31 Apr 22 23:40 brcmfmac43012-sdio.bin -> ../cypress/cyfmac43012-sdio.bin
lrwxrwxrwx 1 root root 36 Apr 22 23:40 brcmfmac43012-sdio.clm_blob -> ../cypress/cyfmac43012-sdio.clm_blob
lrwxrwxrwx 1 root root 31 Apr 22 23:40 brcmfmac43340-sdio.bin -> ../cypress/cyfmac43340-sdio.bin
lrwxrwxrwx 1 root root 31 Apr 22 23:40 brcmfmac43362-sdio.bin -> ../cypress/cyfmac43362-sdio.bin
lrwxrwxrwx 1 root root 30 Apr 22 23:40 brcmfmac4339-sdio.bin -> ../cypress/cyfmac4339-sdio.bin
lrwxrwxrwx 1 root root 31 Apr 22 23:40 brcmfmac43430-sdio.bin -> ../cypress/cyfmac43430-sdio.bin
lrwxrwxrwx 1 root root 31 Apr 22 23:40 brcmfmac43455-sdio.bin -> ../cypress/cyfmac43455-sdio.bin
lrwxrwxrwx 1 root root 36 Apr 22 23:40 brcmfmac43455-sdio.clm_blob -> ../cypress/cyfmac43455-sdio.clm_blob
lrwxrwxrwx 1 root root 30 Apr 22 23:40 brcmfmac4354-sdio.bin -> ../cypress/cyfmac4354-sdio.bin
lrwxrwxrwx 1 root root 35 Apr 22 23:40 brcmfmac4354-sdio.clm_blob -> ../cypress/cyfmac4354-sdio.clm_blob
lrwxrwxrwx 1 root root 30 Apr 22 23:40 brcmfmac4356-pcie.bin -> ../cypress/cyfmac4356-pcie.bin
lrwxrwxrwx 1 root root 35 Apr 22 23:40 brcmfmac4356-pcie.clm_blob -> ../cypress/cyfmac4356-pcie.clm_blob
lrwxrwxrwx 1 root root 30 Apr 22 23:40 brcmfmac4356-sdio.bin -> ../cypress/cyfmac4356-sdio.bin
lrwxrwxrwx 1 root root 35 Apr 22 23:40 brcmfmac4356-sdio.clm_blob -> ../cypress/cyfmac4356-sdio.clm_blob
lrwxrwxrwx 1 root root 31 Apr 22 23:40 brcmfmac43570-pcie.bin -> ../cypress/cyfmac43570-pcie.bin
lrwxrwxrwx 1 root root 36 Apr 22 23:40 brcmfmac43570-pcie.clm_blob -> ../cypress/cyfmac43570-pcie.clm_blob
lrwxrwxrwx 1 root root 30 Apr 22 23:40 brcmfmac4373-sdio.bin -> ../cypress/cyfmac4373-sdio.bin
lrwxrwxrwx 1 root root 35 Apr 22 23:40 brcmfmac4373-sdio.clm_blob -> ../cypress/cyfmac4373-sdio.clm_blob
lrwxrwxrwx 1 root root 31 Apr 22 23:40 brcmfmac54591-pcie.bin -> ../cypress/cyfmac54591-pcie.bin
lrwxrwxrwx 1 root root 36 Apr 22 23:40 brcmfmac54591-pcie.clm_blob -> ../cypress/cyfmac54591-pcie.clm_blob |
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pingtoo
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Joined: 10 Sep 2021
Posts: 926
Location: Richmond Hill, Canada
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| Posted: Mon Apr 25, 2022 2:45 pm Post subject: |
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Hi ElRay70K70H,
I use GenPi64 (I think it was alpha 8 ) It work fine for my purpose. I have yet to update it's kernel (Linux pi-3.home 5.10.11-v8-p4 #1 SMP PREEMPT Tue Apr 27 18:58:07 -00 2021 aarch64 GNU/Linux) because this kernel work just fine and I don't see new kernel offer any benefit.
Your current posted setting is very different from mine, so you are not using GenPi64 based image?
I be happy to help if you wish start from GenPI64.
I notice few things in your post- /boot/cmdline.txt, "root=223ecc81-..." will not work unless you have a initramfs that know what to do with that. It should be root=PARTUUID="d32ad659-02"
- /boot/config.txt, there is no "kernel=...", I am not sure if that will work, may be your bootloader version have a default value for it?
- /lib/firmware directory contents. it looks wrong, not sure how you got them.
Edit: Noticing from Neddy's post, I got wrong PARTUUID in my original post. it should be root=PARTUUID="d32ad659-02".
Last edited by pingtoo on Mon Apr 25, 2022 5:45 pm; edited 1 time in total |
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NeddySeagoon
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Location: 56N 3W
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| Posted: Mon Apr 25, 2022 3:24 pm Post subject: |
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ElRay70K70H,
On github, the current Pi Foundation kernel is rpi-5.15.y, so that's a good start. 5.10.y should be good too, its just that 5.15 in the new LTS.
Your linux-5.15.32-gentoo-r1 is based on the upstream kernel so will be missing some Pi specific patches.
It has a few other quirks you need to take account of too.
So far though, the kernel plays no part in your errors as its not being loaded.
/boot looks good.
The firmware does something sensible with regards loading a kernel with cmdline.txt and config.txt both missing.
Rename those two files and leave everything else as is.
If it still tries to netboot, its got nothing to do with your install. It should load a kernel then fail to mount root.
kernel.img is for the original Pi, its armv6j
kernel7.img is for the armv7-a Pis
kernel7l.img is for the P4 in 32 bin mode.
kernel8.img is for the Pi3 and Pi4 in 64 bit mode.
The Pi4 firmware will load one of the last two.
Onto /boot/cmdline.txt. Gentoo does not provide the serial0 symbolic link. Well the systemd version may but I've not tried that.
I would be surprised if root=223ecc81-7069-45f9-9309-c641eba776c8 worked.
Thats a UUID of sorts. root=UUID= or root=PARTUUID= is expected, or a /dev
root=UUID= requires an initrd but the kernel understands root=PARTUUID= all on its own.
You don't have an initrd.
root=LABEL= also requires an initrd
root=PARTUUID=d32ad659-02 would be good.
The next step is to see the Pi do its own thing and load a (any) kernel before it falls to mount root.
_________________
Regards,
NeddySeagoon
Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail. |
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ElRay70K70H
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Joined: 12 Apr 2022
Posts: 17
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| Posted: Mon Apr 25, 2022 4:45 pm Post subject: |
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| pingtoo wrote: | | ... Your current posted setting is very different from mine, so you are not using GenPi64 based image? ... |
No. I'm working off the regular arm64 stage 3. The docs on the Gentoo site reference one of them, nothing from the GenPi64/gentoo-on-rpi-64bit GitHub site | pingtoo wrote: | - /boot/cmdline.txt, "root=223ecc81-..." will not work unless you have a initramfs that know what to do with that. It should be root=PARTUUID="3a83545e-02"
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Good catch. I don't know how many times I stared at that and completely missed the missing 'PARTUUID=' | pingtoo wrote: | - /boot/config.txt, there is no "kernel=...", I am not sure if that will work, may be your bootloader version have a default value for it?
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AFAIK, it's hardcoded to run 'kernel8.img'. I'll double-check one of the working non-Gentoo boot microSDs I have. | pingtoo wrote: | - /lib/firmware directory contents. it looks wrong, not sure how you got them.
|
What's there is the result of one of the following: |
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ElRay70K70H
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Joined: 12 Apr 2022
Posts: 17
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| Posted: Mon Apr 25, 2022 5:03 pm Post subject: |
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| ElRay70K70H wrote: | | pingtoo wrote: | - /boot/cmdline.txt, "root=223ecc81-..." will not work unless you have a initramfs that know what to do with that. It should be root=PARTUUID="3a83545e-02"
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Good catch. I don't know how many times I stared at that and completely missed the missing 'PARTUUID=' |
I'm not sure what the problem was before, but this (essentially) did the trick. Two comments- 'UUID ≠ PARTUUID'
- Don't mix&match 'UUID' and 'PARTUUID' across cmdline.txt and fstab.
It's now booting off the SSD, but the boot sequence has stalled at: | Code: | | [ 222.815420] random: crng init done |
I'm not sure what it's doing right now, but I know I did have it set to 'fschk' the drive on boot-up. |
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pingtoo
l33t
Joined: 10 Sep 2021
Posts: 926
Location: Richmond Hill, Canada
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| Posted: Mon Apr 25, 2022 5:57 pm Post subject: |
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I sometime got into same condition as your's, That usually happen when I messing around boot device. So may be you are in same condition, that root device are wrong.
I have correct a mistake I post earlier where I use wrong PARTUUID. I hope you were using the correct one from Neddy's port, but if you take copy from mine, My apology  Please see above post use the "d32ad659-02".
your kernel command line parameter "rootwait" cause kernel waiting indefinitely for root device to ready. So may be take out "rootwait" for now to let kernel panic so we can be sure where went wrong.
Also suggest do find a initramfs to use, it will help during initial setup to learn what went wrong. |
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ElRay70K70H
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Joined: 12 Apr 2022
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| Posted: Mon Apr 25, 2022 7:18 pm Post subject: |
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Thanks all.
I'm going to try the test w/o cmdline.txt and config.text and the PARTUUID clean-up.
Just to be clear, I don't need a Gentoo kernel to run Gentoo on top of? Can I still emerge the kernel config tool and use that with the Pi Foundation kernel?
Is there a "verbose" mode that can be turned on during boot so I can see what's happening during a hang like the one I just had? Is there anything written to a log that I can view after the fact by booting to an OS on a microSD card? |
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NeddySeagoon
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Location: 56N 3W
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| Posted: Mon Apr 25, 2022 7:41 pm Post subject: |
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ElRay70K70H,
If you mean genkernel, I don't know. It builds a kernel that demands an initrd, which is harmless.
However, it will not set up config.txt to load either the kernel or the initrd.
I have not used it ever. I suspect that it will use an unsuitable kernel .config as a starting point.
The default kernel names expected by bootcode.bin/Pi4 firmware are the ones in /boot already.
None of those kernels need an initrd.
If you want to use other kernel/initrd/*.dtb file names you can as long as you make the correct entries in config.txt.
The kernel, its optional initrd, and its *.dtb (Device Tree Binary) are a matching set.
The dtb file is built with the kernel.
The default Pi4 configuration in the Pi Foundation kernel works well under Gentoo.
Trying the mainline kernel is still on my todo list.
_________________
Regards,
NeddySeagoon
Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail. |
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ElRay70K70H
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Joined: 12 Apr 2022
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| Posted: Mon Apr 25, 2022 7:58 pm Post subject: |
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| NeddySeagoon wrote: | The default Pi4 configuration in the Pi Foundation kernel works well under Gentoo.
Trying the mainline kernel is still on my todo list. |
Currently the 5.10 Raspberry Pi kernel is selected. Let me get this to boot, then I'll try the newer Pi Foundation kernel. |
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NeddySeagoon
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| Posted: Mon Apr 25, 2022 8:05 pm Post subject: |
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ElRay70K70H,
With the test I suggested, it will boot one of the *.img files.
That's fine. Its fine for it to fail too.
_________________
Regards,
NeddySeagoon
Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail. |
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pingtoo
l33t
Joined: 10 Sep 2021
Posts: 926
Location: Richmond Hill, Canada
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| Posted: Mon Apr 25, 2022 8:24 pm Post subject: |
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| ElRay70K70H wrote: | | Just to be clear, I don't need a Gentoo kernel to run Gentoo on top of? |
Yes, Any kernel that build specific for RPI4 will do, but as per Neddy point out must use matching DTBs that build with the kernel.
| ElRay70K70H wrote: | | Is there a "verbose" mode that can be turned on during boot so I can see what's happening during a hang like the one I just had? |
I don't know any kernel standard parameters can do that. But if you can introduce a initramfs with right toolset you can debug rootfs discovery/mounting process easily.
| ElRay70K70H wrote: | | Is there anything written to a log that I can view after the fact by booting to an OS on a microSD card? |
logging usually happen rootfs mounted, since no rootfs, there is no place to log  Again, if you use initramfs you can usually trace step by step.
If you use GenPi64, you can add "shell" at cmdline.txt, than GenPi64's initramfs will put you into command line, so you can debug the discover/mount processes. |
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NeddySeagoon
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Location: 56N 3W
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| Posted: Mon Apr 25, 2022 8:43 pm Post subject: |
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ElRay70K70H,
Change rootwait to rootdelay=30.
rootwait will wait forever for root to become available and it looks like its not.
rootdelay=30 will make the kernel wait 30 second then try to mount root, regardless of if its available or not.
If root is not ready, the kernel panic message will be useful.
As pingtoo says, you need an initrd to pravide some diagnostic userspace tools to poke about after root fails to mount.
With no root fs, there is nowhere to log anything to.
Its OK to use either PARTUUID or UUID is fstab.
UUID needs the userspace mount command, which is available once root in mounted.
They are different numbers referring to different things.
PARTUUID is a property of a partition.
UUID is a property of a filesystem, which is created on a partition.
_________________
Regards,
NeddySeagoon
Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail. |
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ElRay70K70H
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Joined: 12 Apr 2022
Posts: 17
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| Posted: Mon Apr 25, 2022 11:43 pm Post subject: |
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I made the edit suggestions above, but I went with removing 'rootwait' instead of setting 'rootdelay'. then I: | Code: | pi@piBox:/mnt/gentoo/boot $ mv cmdline.txt cmdline.txt.bak
pi@piBox:/mnt/gentoo/boot $ mv config.txt config.txt.bak |
and tried again. Same hang, at the same point. It looks like the choices are down to setting up an 'initramfs' to continue to troubleshoot, or jump ship and try the 'GenPi64/gentoo-on-rpi-64bit' route. |
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NeddySeagoon
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Location: 56N 3W
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| Posted: Tue Apr 26, 2022 9:01 am Post subject: |
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ElRay70K70H,
Put your kernel..config onto a pastebin site.
I suspect that its not a hang, its a missing console driver, so the console is using black text on a black background.
It may well be booting normally.
If you want that kernel8.img to boot so you can see it, you need to put its modules into /lib/modules on your root filesystem.
The default kernel does not give you a console until root is mounted and the modular driver is loaded.
The Pi 4 install guide suggest that you enable Simple Framebuffer, so you get an earlier console.
_________________
Regards,
NeddySeagoon
Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail. |
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ElRay70K70H
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Joined: 12 Apr 2022
Posts: 17
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| Posted: Tue Apr 26, 2022 6:23 pm Post subject: |
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| NeddySeagoon wrote: | | …The Pi 4 install guide suggest that you enable Simple Framebuffer, so you get an earlier console. |
The only noted I've found on this are from the GwnPi64 GitHub site: | Quote: | | you can fall-back to the standard framebuffer mode by commenting out the dtoverlay=vc4-fkms-v3d line in /boot/config.txt |
But, if config.txt is missing, shouldn't I get the standard frame buffer behavior? I'll read from the non
I'll swap to a bootable microSD and get the kernel config file. If I can find a USB-A to USB-A cable first, I'll just pull it directly from the SSD. |
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NeddySeagoon
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Location: 56N 3W
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| Posted: Tue Apr 26, 2022 7:35 pm Post subject: |
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ElRay70K70H,
| Quote: | | But, if config.txt is missing, shouldn't I get the standard frame buffer behavior? I'll read from the non |
Yes and no.
Yes if the kernel can mount root, as the framebuffer driver you need is built as a module.
If than works you get 10 or so seconds of blank screen after the rainbow, before console text appears.
When root fails to mount, or the module is missing or built with the wrong version magic, you get nothing.
Simple framebeffer works before root is mounted, that way you can see the panic message when root fails to mount.
_________________
Regards,
NeddySeagoon
Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail. |
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ElRay70K70H
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Joined: 12 Apr 2022
Posts: 17
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| Posted: Thu Apr 28, 2022 6:41 pm Post subject: |
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Sorry for the delay. Life got in the way of plans. | NeddySeagoon wrote: | | ... Put your kernel..config onto a pastebin site. ... |
There's not a kernel.config in /boot. The two that exist on the roots are: | Code: | /usr/src/linux-5.10.63_p20211029-raspberrypi/tools/testing/selftests/wireguard/qemu/kernel.config
/usr/src/linux-5.15.32-gentoo-r1/tools/testing/selftests/wireguard/qemu/kernel.config |
and from before, my kernel choices are: | Code: | (chroot) piBox /etc # eselect kernel list
Available kernel symlink targets:
[1] linux-5.10.63_p20211029-raspberrypi *
[2] linux-5.15.32-gentoo-r1 |
so, it looks like they're the right ones.
I'll try to get "simple frame buffer" running tonight. |
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NeddySeagoon
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Location: 56N 3W
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| Posted: Thu Apr 28, 2022 7:38 pm Post subject: |
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ElRay70K70H,
Those pastebins are config file fragments.
The .config files will be in
/usr/src/linux-5.10.63_p20211029-raspberrypi and /usr/src/linux-5.15.32-gentoo-r1
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Regards,
NeddySeagoon
Computer users fall into two groups:-
those that do backups
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ElRay70K70H
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Joined: 12 Apr 2022
Posts: 17
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| Posted: Thu Apr 28, 2022 10:12 pm Post subject: |
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| Here they are: |
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NeddySeagoon
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Joined: 05 Jul 2003
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Location: 56N 3W
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| Posted: Fri Apr 29, 2022 6:56 pm Post subject: |
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ElRay70K70H,
Your /usr/src/linux-5.10.63_p20211029-raspberrypi/.config won't show you a console as it has | Code: | | # CONFIG_FB_BCM2708 is not set |
That's the console driver for all the Pis.
/usr/src/linux-5.15.32-gentoo-r1/.config does not even have that option, so its probably hidden by something else that it needs.
That's means its off. there too.
None of the Pis support EFI, so none of your kernels provide a working console.
Rebuild the kernel using the Raspberry Pi sources and the default Raspberry Pi kernel config.
For a Pi 4 that's | Code: | | make bcm2711_defconfig |
Its sub optimal in that there is a lot of bloat but make it work first.
Make it better later.
_________________
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NeddySeagoon
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ElRay70K70H
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Joined: 12 Apr 2022
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| Posted: Mon May 02, 2022 1:17 am Post subject: |
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Thanks again. I'll try the config reset.
The kernel config that's there is what was pulled-down during the | Code: | | >git clone --depth 1 https://github.com/raspberrypi/linux.git |
step in the various RPi4 64-bioit guides.
Finally, just to be sure, this:
| Code: | │ Symbol: FB_SIMPLE [=n] │
│ Type : tristate │
│ Defined at drivers/video/fbdev/Kconfig:2195 │
│ Prompt: Simple framebuffer support │
│ Depends on: HAS_IOMEM [=y] && FB [=y] && !DRM_SIMPLEDRM [=n] │
│ Location: │
│ -> Device Drivers │
│ -> Graphics support │
│ -> Frame buffer Devices │
│ (6) -> Support for frame buffer devices (FB [=y]) │
│ Selects: FB_CFB_FILLRECT [=y] && FB_CFB_COPYAREA [=y] && FB_CFB_IMAGEBLIT [=y] |
Is the Simple Framebuffer that's being discussed, correct? |
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NeddySeagoon
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Joined: 05 Jul 2003
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Location: 56N 3W
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| Posted: Mon May 02, 2022 9:51 am Post subject: |
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ElRay70K70H,
The | Code: | | git clone --depth 1 https://github.com/raspberrypi/linux.git |
gets you a copy of linus's mainline kernel with Raspberry Pi patches applied.
The kernel .config you get at the end of that step is not useful to anyone.
Its full of different default configurations for every platform that the kernel can support.
You need the | Code: | | make bcm2711_defconfig |
to select the Pi4 default kernel .configuration.
It looks like you skipped that step.
_________________
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NeddySeagoon
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ElRay70K70H
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Joined: 12 Apr 2022
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| Posted: Wed May 04, 2022 10:58 pm Post subject: |
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I've got the kernel rebuilding. We'll see how the new kernel works.
Between my previous email and @NeddySeagoon reply, I turned on the console/simple FB. This time the error was: | Code: | | Not syncing : VFS: unable to mount root fs on unknown-block (0,0) |
This may not be exactly right, I'm typing that from memory, but the end was 'unknown block (0,0)'. So, I went back and compared the default values of:
- /boot/config.txt
- /boot/cmdline.txt
- /etc/fstab
from a base Pi OS microSD card. The only thing that stands out as might be part of the problem is 'fstab'.
From the Pi OS microSD: | Code: | piUser@piBox:/boot $ cat /etc/fstab
proc /proc proc defaults 0 0
PARTUUID=1e921981-01 /boot vfat defaults,flush 0 2
PARTUUID=1e921981-02 / ext4 defaults,noatime 0 1
# a swapfile is not a swap partition, no line here
# use dphys-swapfile swap[on|off] for that |
From the Gentoo SSD: | Code: | gentoo@piBox:/boot $ cat /mnt/gentoo/etc/fstab
proc /proc proc defaults 0 0
shm /dev/shm tmpfs size=4G,nodev,nosuid,noexec 0 0
PARTUUID=d32ad659-01 /boot vfat defaults 0 2
PARTUUID=d32ad659-02 / ext4 defaults,noatime 0 1 |
As far as I can tell, those are the right PARTUUIDs: | Code: | gentoo@piBox:/boot $ blkid
/dev/mmcblk0p1: LABEL_FATBOOT="boot" LABEL="boot" UUID="37E2-62C3" BLOCK_SIZE="512" TYPE="vfat" PARTUUID="1e921981-01"
/dev/mmcblk0p2: LABEL="rootfs" UUID="6a932c1f-7335-42d9-9351-1b1b2ca538d4" BLOCK_SIZE="4096" TYPE="ext4" PARTUUID="1e921981-02"
/dev/sda1: LABEL_FATBOOT="boot" LABEL="boot" UUID="10EB-30C5" BLOCK_SIZE="512" TYPE="vfat" PARTUUID="d32ad659-01"
/dev/sda2: LABEL="rootfs" UUID="223ecc81-7069-45f9-9309-c641eba776c8" BLOCK_SIZE="4096" TYPE="ext4" PARTUUID="d32ad659-02" |
But then again, if the problem is that the rootfs isn't loading, then /etc//fstab hasn't been read yet. So it looks like something else is preventing the rootfs from mounting.- Do I need the 'proc' or 'shm' entries?
- There are several 'tmpfs' devices created by the time the Pi OS microSD boots do they need to be specifically enabled/created?
- Looking at the default kernel .config, I see that all of the 'INITRAMFS..." options are turned off. Should I enable: INITRAMFS_FORCE, INITRAMFS_SOURCE and/or any to the other 'INITRAMFS...' options?
- If yes, then how are they configured at boot, if all the initrc/systemd info in on the rootfs?
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Gentoo on ARM
