[ipxe-devel] Unable to boot Linux kernel for arm64 architecture

[Andre]

Hi,

I'm using a chain loaded iPXE (snponly.efi) via UEFI network boot.
If I want to boot a Linux kernel I get the following error messages and 
the system hangs.


---
http://192.168.0.1/rescue-arm64/4.4.52/vmlinuz... ok
http://192.168.0.1/rescue-arm64/4.4.52/initramfs.cpio.xz... ok
EFI stub: Booting Linux Kernel...
EFI stub: Using DTB from configuration table
EFI stub: Exiting boot services and installing virtual address map...

Synchronous Exception at 0x000000807C5F6B4C
snponly.efi loaded at 0x000000807C5EC000

   X0 0x000000807C61C8FA   X1 0x00000000000000F0   X2 
0x000000807C61C8FE   X3 0x0000000000000002
   X4 0x000000807C61C820   X5 0x0000000000000002   X6 
0x00000000000010E3   X7 0x000000000000EF1C
   X8 0x0000000000000008   X9 0xFFFFFFFFFFFFFFFF  X10 
0x0000000000000004  X11 0x0000000000000000
  X12 0x00000000700FE0FA  X13 0x18E0BC7C80000000  X14 
0x0800000003000000  X15 0x0000000000000003
  X16 0x00000007FFE36420  X17 0x0000000000000004  X18 
0x0000000000000000  X19 0x000000807C616000
  X20 0x000000807C61CDF0  X21 0x000000807C61C80E  X22 
0x000000807C616DE8  X23 0x0000000000000000
  X24 0x00000000A0000000  X25 0x0000000000000000  X26 
0x0000000000000000  X27 0x0000000080000000
  X28 0x000000807E9CA018   FP 0x00000007FFE36190   LR 0x000000807C5F6AD4

   V0 0x9AF7D63CBFB4D935 AB7FFF069D9BD43D   V1 0x9AD9F66DDF1C5CB6 
75D9F1DBFF56DEDC
   V2 0x5B50E6D32F3F5FE5 FDD1DE7BE9ABBF0D   V3 0x87DFECAFA2E3152B 
3EF7FB7DEBFEBFDE
   V4 0xB7A562DDA7CEDE4B A26390BFD66CFE6F   V5 0x31650F5369D0DD3F 
F7EDBF65B345BDB7
   V6 0x747F666DA3BC7DE5 BFFD8EBF00000000   V7 0xDEF7FE37FFDC4FFF 
CEDBE571F5EFFF7E
   V8 0x0000000000000000 FFC3E8ABF758D53C   V9 0x0000000000000000 
6E32E2FD9B6F4FAE
  V10 0x0000000000000000 DAF3F3B5E3D47DFD  V11 0x0000000000000000 
3AF7EEE1E7EBDBB5
  V12 0x0000000000000000 CEA7EFAFFEF3DEC6  V13 0x0000000000000000 
8AFFFE537EFEF9FD
  V14 0x0000000000000000 1B796C7CCFFEF857  V15 0x0000000000000000 
0000000000000000
  V16 0xEAC38E01C1733BFE 7FDBFDD5ECFAFB34  V17 0xDE3FEFFEE5D67744 
DFDCA7D9F5BD4BEF
  V18 0xFFF7E7FF83BD5FEF 7799FAFEBF7D693F  V19 0x37876E7DAFF638B7 
FE5D93FFE737FFF5
  V20 0x1660000080004090 0324002380000008  V21 0x8221A40089213081 
9220400280003081
  V22 0x02000008A0002022 2003000020004034  V23 0x0400002188800080 
0202800180004E84
  V24 0x8101000400114000 0000000300600001  V25 0x1000080021020180 
8102600175804008
  V26 0x1809220800801000 4A42001100081001  V27 0x1004080105800450 
5000322048080000
  V28 0x0100000380820052 0210023002000084  V29 0x0000000006000810 
2220400040000004
  V30 0x0200000001204002 8210000000100010  V31 0x2001C04280000800 
3080624055835005

   SP 0x00000007FFE36040  ELR 0x000000807C5F6B4C  SPSR 0x80000309 FPSR 
0x0800001A
  ESR 0x96000021          FAR 0x000000807C61C81E

  ESR : EC 0x25  IL 0x1  ISS 0x00000021

Data abort: Alignment fault
---


The same kernel and initrd work without any problems if I use GRUB2-EFI 
for the network boot.