Platform missing about xnu

[zhuowei]

@aBradleyUno If you're wondering why the platform name is a bunch of tildes ("~~~~~"):

modifydevicetree.py probably erased the top level compatible node in the device tree. In that script, I only whitelisted the top level platform kext for the iPhone X, which has compatible: b'D22AP\x00iPhone10,3\x00AppleARM\x00'.

This compatible property loads the AppleARMPlatform kext, so even if you fix the modifydevicetree to whitelist that property for your device tree, you'll still get this error since there's no kext - but at least you'll get a better platform name in the error.

[adalric]

@zhuowei Ok so I got the platform message in the panic, and while trying to build a kextcache I got this

Unsupported.kext doesn't support architecture 'arm64'; skipping.
Private.kext doesn't support architecture 'arm64'; skipping.
Mach.kext doesn't support architecture 'arm64'; skipping.
MACFramework.kext doesn't support architecture 'arm64'; skipping.
Libkern.kext doesn't support architecture 'arm64'; skipping.
Kasan.kext doesn't support architecture 'arm64'; skipping.
IOKit.kext doesn't support architecture 'arm64'; skipping.
BSDKernel.kext doesn't support architecture 'arm64'; skipping.
Adding /Volumes/Darm64/System/Library/Extensions/System.kext/PlugIns/IOSystemManagement.kext to prelinked kernel.
Adding /Volumes/Darm64/System/Library/Extensions/System.kext/PlugIns/IONVRAMFamily.kext to prelinked kernel.
Adding /Volumes/Darm64/System/Library/Extensions/System.kext/PlugIns/ApplePlatformFamily.kext to prelinked kernel.
Adding /Volumes/Darm64/System/Library/Extensions/System.kext/PlugIns/AppleNMI.kext to prelinked kernel.
Adding /Volumes/Darm64/System/Library/Extensions/System.kext to prelinked kernel.

command file /Volumes/Darm64/System/Library/Extensions/System.kext/PlugIns/Unsupported.kext/Unsupported reveals something weird

/Volumes/Darm64/System/Library/Extensions/System.kext/PlugIns/Unsupported.kext/Unsupported: Mach-O 64-bit kext bundle ppc64

[zhuowei]

What command did you run to generate the kernelcache?

[adalric]

sudo kextcache -z -a arm64 -c /Volumes/Darm64/kernelcache.debug -K BUILD/obj/mach.debug /Volumes/Darm64/System/Library/Extensions -v 6

[adalric]

@zhuowei so, my bad, wrong cpu type there. Now Assertion failed: (nNonSplitKexts), function __OSKextGetPLKSegSizes, file /BuildRoot/Library/Caches/com.apple.xbs/Sources/IOKitUser/IOKitUser-1483.201.1/kext.subproj/OSKext.c, line 16718. zsh: abort sudo kextcache -z -a arm64 -c /Volumes/Darm64/kernelcache.debug -K -v 6