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Make vendor.prop the single source of truth for WiFi country code

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ro.boot.wificountrycode was set in two places: androidboot.wificountrycode=US
on the kernel cmdline (mkimg.sh extlinux heredoc) and ro.boot.wificountrycode=00
in vendor.prop. Because ro.* properties are set-once and init processes the
cmdline first, the cmdline always won and the vendor.prop value silently lost
(init logs 'Read-only property was already set' every boot). Worse, the
vendor.prop value was 00 (world regulatory domain), a landmine that would
activate if the cmdline param were ever dropped.

Remove the cmdline param and set vendor.prop to US so the country code lives
in exactly one place, delivered via vendor.img instead of a hand-maintained
boot heredoc. Note this only feeds the Android framework (WifiCountryCode);
the kernel side additionally needs regulatory.db to actually apply it (fixed
separately by embedding it via CONFIG_EXTRA_FIRMWARE in the kernel).
This commit is contained in:
Brendan Szymanski 2026-07-14 20:30:36 -04:00
parent 6c2ea1b408
commit fe62849cb0
2 changed files with 5 additions and 2 deletions
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2
mkimg.sh
View file

@ -140,7 +140,7 @@ label LineageOS Android TV
kernel /Image
fdt /rk3588-orangepi-5-ultra.dtb
initrd /ramdisk.img
append console=ttyS2,1500000 no_console_suspend root=/dev/ram0 rootwait androidboot.hardware=tart androidboot.selinux=permissive androidboot.boot_devices=fe2c0000.mmc androidboot.console=ttyS2 androidboot.wificountrycode=US
append console=ttyS2,1500000 no_console_suspend root=/dev/ram0 rootwait androidboot.hardware=tart androidboot.selinux=permissive androidboot.boot_devices=fe2c0000.mmc androidboot.console=ttyS2
EXTLINUX_EOF
sudo cp ${KERNEL_PATH}/boot.scr "${BOOT_MOUNT}/"
sudo cp ${KERNEL_PATH}/android-sdcard.dtbo "${BOOT_MOUNT}/"

5
vendor.prop
View file

@ -81,7 +81,10 @@ persist.device_config.mglru_native.lru_gen_config=core
ro.boot.hypervisor.vm.supported=1
# Wifi
ro.boot.wificountrycode=00
# Single source of truth for the regulatory country code. Init exports this to
# the framework's WifiCountryCode; ro.boot.* is set-once, so this must NOT also
# appear as androidboot.wificountrycode on the kernel cmdline (mkimg.sh).
ro.boot.wificountrycode=US
wifi.interface=wlan0
# Window extensions