For IBM/Lenovo ThinkPad laptop enthusiasts.
What have we here? First boot attempt with FreeBSD 14.1 aarch64 on a Thinkpad T14s gen6, running a Qualcomm Snapdragon X Elite processor.
A few next steps, update the BIOS and other firmware blobs, mess around with some dtb files, poke and prod, iterate as usual.
#FreeBSD #Thinkpad #Snapdragon #arm64 #kernel
Did you know that you can customize the boot image in some Lenovo Laptop. I did it for my X280.
I wrote a little tutorial about https://adminblog.foucry.net/posts/info/lenovo_hack/it (sorry it's in French) :
@[email protected] yep, that's a fun mod! ooh the X280 was a great laptop, and is still a great laptop! somewhere around here is a X260 waiting for a panel upgrade, will give your tutorial a shot before disassembly occurs. ๐๐ป
Happy to give you this info.
To be honest, I think I prefer my X220 than my X280. ๐
@[email protected] @[email protected] what's tegra doing in there??
@[email protected] @[email protected] good question! still looking for a PCB schematic, though getting to a full boot command line would offer a step towards running hardware topo system calls necessary for enumeration.
for better or worse, the text screams by until the panic stops, so I'll be connecting its HDMI out to a PiKVM, which will facilitate streaming log capture; improving access to all that debugging data. typically my workflow for arm64 + freebsd involves either using a SoL terminal and/or RS232 / TTL output capture, but those are not available for a laptop... hmmm hmm.
@[email protected] @[email protected] the dtbs here mention a debug uart: https://lore.kernel.org/lkml/[email protected]/T/
But other folks are doubting its existence later in the thread. Just weird when the patch comes from Qualcomm themselves...
Does FreeBSD have netconsole like Linux? I suppose the network isn't even up by the time it panics?
Going to be fun to follow either way!
@[email protected] that screen looks amazing like that black seems so nice, not like usual LCDs
@[email protected] thanks, it's the higher spec OLED option
@[email protected] ohhhh I thought it was just a really cool LCD or something, but that was just the lighting ๐