meta-ampere: mtmitchell: fix Host is powered OFF when BMC reboots

When BMC is rebooted, because PSON_L has pull up to P3V3_STB, it changes its
value to HIGH which causes the Host is turned OFF.
Add code to check P3V3_STB and recover PSON_L to correct state before setting
BMC_RDY.

Tested:
1. Turn ON the Host
2. Run BMC reboot stress test and check if the Host is still ON

Signed-off-by: Thang Q. Nguyen <thang@os.amperecomputing.com>
Change-Id: Ic1e3a403d2833b3549fa4f08dcce21a27d8e2308

1 files changed, 43 insertions, 0 deletions

diff --git a/meta-ampere/meta-mitchell/recipes-ampere/platform/ampere-platform-init/mtmitchell_platform_gpios_init.sh b/meta-ampere/meta-mitchell/recipes-ampere/platform/ampere-platform-init/mtmitchell_platform_gpios_init.sh
index 396fbffa38..76d3a7454c 100644
--- a/meta-ampere/meta-mitchell/recipes-ampere/platform/ampere-platform-init/mtmitchell_platform_gpios_init.sh
+++ b/meta-ampere/meta-mitchell/recipes-ampere/platform/ampere-platform-init/mtmitchell_platform_gpios_init.sh
@@ -18,9 +18,48 @@ function pre-platform-init() {
 }
 
 function post-platform-init() {
+
+    # When BMC is rebooted, because PSON_L has pull up to P3V3_STB, it changes its
+    # value to HIGH. Add code to check P3V3_STB and recover PSON_L to correct state
+    # before setting BMC_RDY.
+    cnt=10
+    pgood=""
+    while [ $cnt -gt 0 ];
+    do
+        pgood=$(busctl get-property org.openbmc.control.Power /org/openbmc/control/power0 org.openbmc.control.Power pgood | cut -d' ' -f2)
+        if [[ "$pgood" != '' ]]; then
+            break;
+        fi
+        cnt=$(( cnt - 1 ))
+        sleep 1
+    done
+
+    if [ "$pgood" == '1' ]; then
+        echo "PSU is on. Setting PSON to 0"
+        gpio_name_set power-chassis-control 0
+    else
+        echo "pgood D-Bus property response as 0. PSU is off."
+        # for unknown reason when stress reboot bmc power-control.exe detect power-chassis-good is 1 (power on)
+        # But "busctl get-property org.openbmc.control.Power /org/openbmc/control/power0 org.openbmc.control.Power pgood" responses 0 (power off)
+        # Add sleep 3 seconds after the pgood dbus reponse (power off) and recheck the power-chassis-good to confirm about the PSU power state
+        sleep 3
+        pgood=$(gpio_name_get power-chassis-good)
+        if [ "$pgood" == '0' ]; then
+            echo "power-chassis-good reponse as 0. Confirm PSU is off. Setting PSON to 1."
+            gpio_name_set power-chassis-control 1
+        fi
+    fi
+    gpio_name_set host0-sysreset-n 1
+
     # gpio-leds is controlling bmc-ready, not by gpio
     echo 1 > /sys/class/leds/bmc-ready/brightness
 
+    echo "Set default FAN speed to 60%"
+    for filename in /sys/class/hwmon/*/pwm*
+    do
+        echo 153 > "$filename"
+    done
+
     # Bind rtc driver
     bind_rtc_driver
 }
@@ -44,9 +83,11 @@ export input_gpios_in_ac=(
 export output_high_gpios_in_bmc_reboot=(
     "host0-sysreset-n"
     "host0-pmin-n"
+    "bmc-debug-mode"
     "vrd-sel"
     "spd-sel"
     "ext-high-temp-n"
+    "fpga-program-b"
     "wd-disable-n"
     "hpm-stby-rst-n"
     "jtag-sel-s0"
@@ -71,6 +112,7 @@ export input_gpios_in_bmc_reboot=(
     "presence-ps0"
     "presence-ps1"
     "hsc-12vmain-alt2-n"
+    "eth-phy-int-n"
     "s0-pcp-oc-warn-n"
     "s1-pcp-oc-warn-n"
     "cpu-bios-recover"
@@ -97,6 +139,7 @@ export input_gpios_in_bmc_reboot=(
     "s1-fw-boot-ok"
     "s0-spi-auth-fail-n"
     "s1-sys-auth-failure-n"
+    "cpld-s1-spi-auth-fail-n"
     "ps0-pgood"
     "ps1-pgood"
     "s0-soc-pgood"