RT-AX56U Modules problem

[LanLord]

Hello!

I am trying to compile some additional kernel drivers (sound, uvc & Bluetooth) for AX56U using the latest Merlin repo. For the firmware I did use the amcfwm script and after some tweaking it successfully produced an image (384.18_alpha1). The problem looks like this:

root@ubuntu:~/amng.ax56/release/src-rt-5.02axhnd.675x/kernel/linux-4.1# make menuconfig
  HOSTCC  scripts/kconfig/mconf.o
  HOSTCC  scripts/kconfig/lxdialog/checklist.o
  HOSTCC  scripts/kconfig/lxdialog/util.o
  HOSTCC  scripts/kconfig/lxdialog/inputbox.o
  HOSTCC  scripts/kconfig/lxdialog/textbox.o
  HOSTCC  scripts/kconfig/lxdialog/yesno.o
  HOSTCC  scripts/kconfig/lxdialog/menubox.o
  HOSTLD  scripts/kconfig/mconf
scripts/kconfig/mconf  Kconfig
configuration written to .config

*** End of the configuration.
*** Execute 'make' to start the build or try 'make help'.

root@ubuntu:~/amng.ax56/release/src-rt-5.02axhnd.675x/kernel/linux-4.1# make kernel
scripts/kconfig/conf  --silentoldconfig Kconfig
  SYSTBL  arch/x86/syscalls/../include/generated/asm/syscalls_32.h
  SYSHDR  arch/x86/syscalls/../include/generated/asm/unistd_32_ia32.h
  SYSHDR  arch/x86/syscalls/../include/generated/asm/unistd_64_x32.h
  SYSTBL  arch/x86/syscalls/../include/generated/asm/syscalls_64.h
  SYSHDR  arch/x86/syscalls/../include/generated/uapi/asm/unistd_32.h
  SYSHDR  arch/x86/syscalls/../include/generated/uapi/asm/unistd_64.h
  SYSHDR  arch/x86/syscalls/../include/generated/uapi/asm/unistd_x32.h
  HOSTCC  arch/x86/tools/relocs_32.o
  HOSTCC  arch/x86/tools/relocs_64.o
  HOSTCC  arch/x86/tools/relocs_common.o
  HOSTLD  arch/x86/tools/relocs
  CHK     include/config/kernel.release
  WRAP    arch/x86/include/generated/asm/clkdev.h
  WRAP    arch/x86/include/generated/asm/cputime.h
  WRAP    arch/x86/include/generated/asm/dma-contiguous.h
  WRAP    arch/x86/include/generated/asm/early_ioremap.h
  WRAP    arch/x86/include/generated/asm/mcs_spinlock.h
  WRAP    arch/x86/include/generated/asm/scatterlist.h
  CHK     include/generated/uapi/linux/version.h
  CHK     include/generated/utsrelease.h
  CC      kernel/bounds.s
cc1: error: code model kernel does not support PIC mode
Kbuild:43: recipe for target 'kernel/bounds.s' failed
make[1]: *** [kernel/bounds.s] Error 1
Makefile:1319: recipe for target 'prepare0' failed
make: *** [prepare0] Error 2

Please help. Thank you!

 

[Joshuajackson]

are you trying to get updated drivers for it? if so could u share the firmware with me pls?

 

[RMerlin]

You can't directly compile the kernel like that. The proper config_base config must be provided by the firmware build system.

Make any change you need to make to the appropriate config_base file (the file will depend on the specific model you are working with), then compile the kernel through the regular firmware build system, not by compiling directly.

 

[LanLord]

You can't directly compile the kernel like that. The proper config_base config must be provided by the firmware build system.

Make any change you need to make to the appropriate config_base file (the file will depend on the specific model you are working with), then compile the kernel through the regular firmware build system, not by compiling directly.

I tried to adapt this older tutorial https://hqt.ro/how-to-compile-modules-for-asuswrt-routers/ that I've used in the past for AC56U and N18U, thinking that it would work with the new version of your firmware.
I will try to compile it again tomorrow and come back with my results.
Thank you Merlin! You do a wonderful thing.

 

[LanLord]

are you trying to get updated drivers for it? if so could u share the firmware with me pls?

The modules required for usb sound support are here: https://www.dropbox.com/s/35tzoscryoo8xh3/AX56_sound_modules.zip?dl=0
They do work with the newest Merlin firmware, downloaded from the official page (384.18-alpha1). Tested with alsa and mpd.
As for video, I have this issue:

modprobe -d /opt/ uvcvideo
modprobe: can't load module videobuf2_vmalloc (kernel/drivers/media/v4l2-core/videobuf2-vmalloc.ko): unknown symbol in module, or unknown parameter

I wonder if this problem is caused by the fact that I used for the flashing process the official Merlin image instead of the one compiled by me.. I re-flashed my router with my image file, but the same issue appears.
Any suggestions? Thanks!

 

[LanLord]

If it does matter:

videobuf2_vmalloc: Unknown symbol dma_buf_vmap (err 0)
videobuf2_vmalloc: Unknown symbol dma_buf_export (err 0)
videobuf2_vmalloc: Unknown symbol dma_buf_vunmap (err 0)