read android device serial number from sysfs node

read android serial number value from sysfs node instead of kernel command line. Upstream boot managers e.g., systemd-boot does not populate kernel command line with parameter androidboot.serialno. Reading serial number from sysfs node /sys/devices/soc0/serial_number generalizes the approach and makes it independent of bootloader that loads kernel. Signed-off-by: Vishwas Udupa <[email protected]>
Linaro · Nov 17, 2023 · bb770cf · bb770cf
1 parent 41e37ca
commit bb770cf
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/...ipes-devtools/android-tools/android-tools-conf-configfs/qcom/android-gadget-setup.machine b/...ipes-devtools/android-tools/android-tools-conf-configfs/qcom/android-gadget-setup.machine
@@ -1,4 +1,4 @@
 manufacturer=Qualcomm
 model=`hostname`
-androidserial="$(sed -n -e '/androidboot.serialno/  s/.*androidboot.serialno=\([^ ]*\).*/\1/gp ' /proc/cmdline)"
+androidserial="$(printf "%x" "$(cat /sys/devices/soc0/serial_number)")"
 [ -n "$androidserial" ] && serial="$androidserial"