jlinktu
commented
3 years ago The AC88U and AC86U do not share common/compatible architectures.
The nexutil cross-compile instructions on the readme target the AC86U's aarch64 architecture.
The target architecture for the AC88U is armv7-a. Thus, you need a different toolchain. You could try following the steps as in the readme and replace step 9 and 10 with:
9.
export AMCC=$(pwd)/am-toolchains/brcm-arm-hnd/crosstools-arm-gcc-5.3-linux-4.1-glibc-2.22-binutils-2.25/usr/bin/arm-buildroot-linux-gnueabi-
export LD_LIBRARY_PATH=$(pwd)/am-toolchains/brcm-arm-hnd/crosstools-arm-gcc-5.3-linux-4.1-glibc-2.22-binutils-2.25/usr/lib10.
cd utilities/libnexio
${AMCC}gcc -c libnexio.c -o libnexio.o -DBUILD_ON_RPI
${AMCC}ar rcs libnexio.a libnexio.o
cd ../nexutil
echo "typedef uint32_t uint;" > types.h
sed -i 's/argp-extern/argp/' nexutil.c
${AMCC}gcc -static -o nexutil nexutil.c bcmwifi_channels.c b64-encode.c b64-decode.c -DBUILD_ON_RPI -DVERSION=0 -I. -I../libnexio -I../../patches/include -L../libnexio/ -lnexio -mcpu=cortex-a9 -march=armv7-a
scp nexutil admin@<address of your rt-ac86u>:/jffs/nexutil
ssh admin@<address of your rt-ac86u> "/bin/chmod +x /jffs/nexutil"If that does not work out start by searching for a toolchain compatible with the AC88U and go along as above with the matching toolchain.
quantumhub
maxedbeech
I follow instruction and have /jffs/dlarray_4366c0.bin loaded on ac88u successfully. However, the nexutil complied for ac86u won't work on ac88u.
New wifi driver seems to be working: admin@RT-AC88U:/jffs# wl -i eth2 channel No scan in progress. current mac channel 36 target channel 157
But nexutil is not: admin@RT-AC88U:/jffs# ./nexutil -Ieth2 -k ./nexutil: line 1: ELF�H@@X$ @8@@@,,�I�IP-�NXX@X@: not found
Hey @zeroby0!
To answer your question...
With the fantastic guidance of @jlinktu, having compared two dhd.ko files, I got the GT-AC5300 working by using the patched dhd.ko originally meant for the ac86u. This is because we found that the dhd.ko of the GT-AC5300 contains firmware version 10.10.122.20 compiled in 2017 (the ac86u firmware is also 10.10.122.20 but compiled in 2019).
My progress on trying to get the RT-AC88U to work...
Funnily enough I've been trying to get the RT-AC88U working and am facing the exact same error. I again liaised with the generous @jlinktu on this and below is a summary of the progress we made:
Jakob:
Me: Sent over the dhd.ko files corresponding to the following router versions:
Jakob:
Me: Attempted this and it reading the console read-out, it seemed to be successful. My assumption was then that I should run through the steps again, however I just got the same error on Step 7.
It may be that I shouldn't have just gone through the steps again but instead have done something different, am not sure. So would recommend trying the same steps and seeing if you have more success than I did!
Additionally, I did only try Jakob's first idea with the two versions mentioned, so although unlikely to find one compatible with the RT-AC86U, it might be worth trying the other ones.
_Originally posted by @maxedbeech in https://github.com/seemoo-lab/nexmon_csi/issues/162#issuecomment-744024808_