Imperf3kt wrote: ↑
Thu Aug 22, 2019 4:49 am
lpsw wrote: ↑
Thu Aug 22, 2019 2:49 am
No. The Pi4 requires Buster.
To be more accurate, the Pi4 needs the bootcode compatible with it to work.
This bootcode is not present in anything except Raspbian Buster and select 3rd party operating systems.
For reference, Raspberry Pi4 needs the following files to boot to Linux
- start4.elf and fixup4.dat (or _cd _x variants)
- *.dtb and overlays from bootfs
So if you take a Stretch image for Pi3 and copy the following files from Buster then it should boot if you disable FKMS in config.txt by commenting out "dtoverlay=vc4-fkms-v3d". The Mesa drivers for V3D will NOT run on Stretch and there is no chance of anyone at RPi spending time on that.
Disclaimer: I've not tried this since some months before launch i.e. when we switched to Buster. This should at least get a Kernel + Linux console running but I wouldn't be surprised if you hit issues with userland.
i.e. If you really really really want to run stretch then the above is a good starting point but unless you are happy debugging via serial console and hacking userland stuff then I wouldn't bother