Pi 4 automatic loading driver after reboot

[davidbenucci]

For Pi4, the instructions for loading modified driver after reboot are the same of Pi3? In this way the interface mon0 is automatically added and set in monitor mode? how can I connect to an access point in parallel without wpa_supplicant if mon0 is up? Thanks in advance.

[baldevbarrsiwal]

You can copy manually the installed patch to brcmfmac folder after patching make backup-firmware

check your kernel version and then

cp /home/pi/nexmon/patches/bcm43455c0/7_45_206/nexmon/brcmfmac_5.4.y-nexmon/brcmfmac.ko /home/pi cp /home/pi/brcmfmac.ko /lib/modules/5.4.51-v7l+/kernel/drivers/net/wireless/broadcom/brcm80211/brcmfmac/

or

cp /home/pi/ brcmfmac.ko /lib/modules/5.4.51-v7+/kernel/drivers/net/wireless/broadcom/brcm80211/brcmfmac/

it resolved for me

[michalisk13]

Hi,

I have similar issue. After building the patch succesfully, there is no brcmfmac.ko file created which I can copy to the /lib/modules/5.15.84-v8+/kernel/drivers/net/wireless/broadcom/brcm80211/brcmfmac/

In my patch folder I have the following files created after the build process:

 root@raspberrypi:/home/pi/nexmon/patches/bcm43455c0/7_45_206/nexmon# ls
brcmfmac43455-sdio.bin  brcmfmac43455-sdio.bin.orig  BUILD_NUMBER  gen  log  Makefile  obj  patch.ld  src

Please note that the patch looks to be working. The problem is to add persistancy when reboot.

Thanks, Mak

[sknbl]

what i did to make the rpi4 load the modified driver after reboot is:

# mv /lib/modules/<kernel release>/kernel/drivers/net/wireless/broadcom/brcm80211/brcmfmac/brcmfmac.ko.xz /lib/modules/<kernel release>/kernel/drivers/net/wireless/broadcom/brcm80211/brcmfmac/brcmfmac.ko.xz.orig

# cp /home/pi/nexmon/patches/driver/brcmfmac_<branch>-nexmon/brcmfmac.ko /lib/modules/<kernel release>/kernel/drivers/net/wireless/broadcom/brcm80211/brcmfmac/

# cd /lib/modules/<kernel release>/kernel/drivers/net/wireless/broadcom/brcm80211/brcmfmac/

# xz brcmfmac.ko

# reboot