what about PI 4

[graysky]

@perosb - I think there are some kernel settings that need to be tweaked to get the Arch ARM image to work with it. You'll have to wait for official support

[perosb]

$this->bbcode_second_pass_quote('', '@')perosb - I think there are some kernel settings that need to be tweaked to get the Arch ARM image to work with it. You'll have to wait for official support

[lategoodbye]

Here a short statement as a BCM283x kernel maintainer. The Raspberry Pi 4 needs a lot of upstreaming work to get it into the Mainline Kernel. The biggest problem is the lack of SoC peripheral description (release is announced in a few weeks according to the RPF). Also there is no U-Boot support yet.

$this->bbcode_second_pass_quote('moonman', 'D')oes anyone know if ethernet is sharing bandwidth with USB 3.0 ports?

[tiagoboldt]

Can anyone pinpoint where/how to track progress on rpi4 support? I've been trying to find this, without success.
Thanks

[graysky]

I finally received by Pi4 with 4G. I am reading through this guide: https://www.raspberrypi.org/documentati ... uilding.md

It seems the the output of `make bcm2711_defconfig` produces quite a different config file. I ran this and am building linux-raspberry pi using that config now.

Config file that produces: https://gist.github.com/graysky2/868022 ... 003dab4f57

I altered the CONFIG_LOCALVERSION="-v7l" line to read CONFIG_LOCALVERSION="-ARCH" and also changed the default CPU gov to ondemand.

For reference, the current config for linux-raspberrypi: https://github.com/archlinuxarm/PKGBUIL ... ypi/config

[graysky]

An update: the kernel I built boots fine on my RPi3B+. I do not see any regressions in dmesg.

More importantly, installing that microSD into the RPi4 allows it to boot and I am seeing all 4 G of RAM. The USB ports seem to work with a thumb drive. I can compile the kernel under this hardware as a stability test (temp ramp up to 80C but no issues for 40 minutes). What else should be tested?

$this->bbcode_second_pass_code('', '% free -m
total used free shared buff/cache available
Mem: 3906 80 3764 0 62 3787
Swap: 3972 0 3972
')

$this->bbcode_second_pass_code('', '% lscpu
Architecture: armv7l
Byte Order: Little Endian
CPU(s): 4
On-line CPU(s) list: 0-3
Thread(s) per core: 1
Core(s) per socket: 4
Socket(s): 1
Vendor ID: ARM
Model: 3
Model name: Cortex-A72
Stepping: r0p3
CPU max MHz: 1500.0000
CPU min MHz: 600.0000
BogoMIPS: 108.00
Flags: half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32')

[tiagoboldt]

@graysky, can you build the kernel in a rpi2, change the config file to use that new kernel and use the same card to boot a pi4? I would like to move from pi2 to pi4 by just replacing the board.

[graysky]

This kernel should work on the Pi2 - Pi4. Note that Kevin already has distilled out the options from that config and built an Arch ARM kernel that works on the Pi2 - Pi4. He might want to do some testing before pushing to the repo. Basically, just go under "System type>Multiple platform selection" and disable "ARMv6 based platforms (ARM11)" then you can enable the LPAE option from that same section. Probably want to also change the RAM split from 2/2 to 1/3 split.

EDIT:
Here is the config: https://gist.github.com/graysky2/b78502 ... 9a2c9f7d5a

[graysky]

I built 4.19.58 you can try:

http://repo-ck.com/armv7h/
http://repo-ck.com/armv7h/linux-raspber ... kg.tar.zst
http://repo-ck.com/armv7h/linux-raspber ... kg.tar.zst

[tiagoboldt]

My setup loads the kernel from the SD and then boots from an external USB disk with the following cmdline.txt:
$this->bbcode_second_pass_code('', 'root=PARTUUID=1bf9d30c-01 rw rootwait console=ttyAMA0,115200 console=tty1 selinux=0 plymouth.enable=0 dwc_otg.lpm_enable=0 elevator=noop')
Worked perfectly with pi2. With pi4 and this config, I can't move past the rainbow screen at boot. The ACT led blinks at first than stays on permanently.
Ideas?

Edit: I only have the boot partition on the SD card. Everything else is on the external usb disk.