meta-ampere: use watchdog status to check A/C power
With the removal of u-boot patch that adds resetreason to /proc/cmdline
no information to check if the BMC is booted from A/C power or cold reboot.
This commit removes the dependency of resetreason on the
phosphor-discover-system-state application and updates the A/C power
check in the ampere_platform_init.sh script to use information from
/sys/class/watchdog/watchdog0/bootstatus.
Tested:
1. Check power restore policy feature work well.
2. Check ampere_platform_init.sh works properly in both A/C and D/C
power.
Signed-off-by: Thang Q. Nguyen <thang@os.amperecomputing.com>
Change-Id: I4f2e7a241f9ddebf21b2b8c021b9ce87a1c8b26c
diff --git a/meta-ampere/meta-jade/recipes-ampere/platform/ampere-platform-init/ampere_platform_init.sh b/meta-ampere/meta-jade/recipes-ampere/platform/ampere-platform-init/ampere_platform_init.sh
index c3772fb..4b448ef 100644
--- a/meta-ampere/meta-jade/recipes-ampere/platform/ampere-platform-init/ampere_platform_init.sh
+++ b/meta-ampere/meta-jade/recipes-ampere/platform/ampere-platform-init/ampere_platform_init.sh
@@ -30,8 +30,8 @@
# =======================================================
# Below GPIOs are controlled by other services so just
# initialize in A/C power only.
-cmdline=$(cat /proc/cmdline)
-if [[ $cmdline == *resetreason=power* ]]; then
+bootstatus=$(cat /sys/class/watchdog/watchdog0/bootstatus)
+if [ "$bootstatus" == '32' ]; then
# BMC_GPIOR2_EXT_HIGHTEMP_L
gpio_configure_output 138 1