09:44 <rofikkernel[m]> <ellyqw> "you can boot however you want" <- it needed custom bootloader like uboot or lk2nd like that?

10:00 <coloneyescolon[m]> can someone ban that guy

14:22 <ellyqw> rofikkernel[m]: no, but u-boot > xbl

15:16 <rofikkernel[m]> <ellyqw> "rofikkernel: no, but u-boot..." <- so mean stock bootloader can boot mainline? if device tree correct?

15:17 <katzenmann[m]> Yeah. You just need to build a boot.img with the mainline kernel and flash it to the BOOT partition

15:18 <katzenmann[m]> It needs to be in the correct format of course. Different bootloaders support different formats. You can analyze a boot.img from android with the unpack_bootimg command to get the correct format

15:54 <ellyqw> on qcom it's usually:

15:55 <ellyqw> cat arch/arm64/boot/Image.gz arch/arm64/boot/dts/qcom/sdm710-xiaomi-pyxis.dtb > /tmp/pyxis-kernel-dtb

15:56 <ellyqw> mkbootimg --kernel /tmp/pyxis-kernel-dtb --pagesize 4096 --kernel_offset 0x00008000 --ramdisk <path_to_initfs> --cmdline 'root=UUID=<blkid> loglevel=15' -o pyxis-boot.img

15:56 <ellyqw> and then fastboot flash boot boot.img

15:56 <ellyqw> (pagesize 4k for ufs)

15:57 <ellyqw> and of course, fastboot erase dbto

15:57 <ellyqw> s/dbto/dtbo

15:58 <ellyqw> with u-boot you can do efiboot though, so you can load grub/systemd-boot and have immutable distro if you want, just gives you a lot more flexibility and removes all android-specific crap from xbl

15:59 <ellyqw> and of course you can just store the kernel on internal storage, so in my opinion it's easier to develop (flash your os image onto mSD card, stick it into the device, efiboot from that and test)

16:01 <ellyqw> i actually wonder if I can re-partition the entire LUN while running mainline to have /boot/efi, /, /home and swap

16:03 <ellyqw> especially since i can extract calibration data from persist and store it in /lib/firmware, or create another (smaller) partition and drop all firmwares + calibration onto that partition and add it to fstab (like /dev/sda5 /lib/firmware/qcom/sdm710 ext4)

16:03 <ellyqw> sorry, i forgot to take my ADHD meds and got (publicly) lost in the train of thoughts, my apologies