Initial commit

meta-ampere/meta-mitchell/recipes-ampere/platform/ampere-utils/ampere_scandump_mode.sh

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+#!/bin/bash
+
+# Helper script to support enable/disable Scandump Mode
+# Author : Hieu Huynh (hieu.huynh@amperecomputing.com)
+#
+# To enable Scandump mode:
+#    ampere_scandump_mode.sh enable
+#
+# To disable Scandump mode:
+#    ampere_scandump_mode.sh disable
+#
+# To get Scandump mode status:
+#    ampere_scandump_mode.sh getstatus
+
+enable_scandump_mode() {
+	echo "Enable Scandump mode"
+	# Disable Mpro hang detection
+	systemctl stop ampere-sysfw-hang-handler.service
+
+	# Disable PLDM service
+	systemctl stop pldmd.service
+
+	# Enable scandump mode in CPLD
+	# Get Port0 value
+	p0_val=$(i2cget -f -y 15 0x22 0x02)
+	p0_val=$(("$p0_val" | (1 << 4)))
+	# Set Port0[4] value to "1" to mask all CPU’s GPIOs, set Port0[4].
+	i2cset -f -y 15 0x22 0x02 $p0_val
+
+	p0_IOexp_val=$(i2cget -f -y 15 0x22 0x06)
+	p0_IOexp_val=$(("$p0_IOexp_val" & ~(1 << 4)))
+	# Config CPLD's IOepx Port0[4] from input to output, clear IOepx Port0[4].
+	i2cset -f -y 15 0x22 0x06 $p0_IOexp_val
+}
+
+diable_scandump_mode() {
+	echo "Disable Scandump mode"
+
+	# Disable scandump mode in CPLD
+	# Get Port0 value
+	p0_val=$(i2cget -f -y 15 0x22 0x02)
+	p0_val=$(("$p0_val" & ~(1 << 4)))
+	# Set Port0[4] value to "0" to unmask all CPU’s GPIOs, clear Port0[4].
+	i2cset -f -y 15 0x22 0x02 $p0_val
+
+	p0_IOexp_val=$(i2cget -f -y 15 0x22 0x06)
+	p0_IOexp_val=$(("$p0_IOexp_val" | (1 << 4)))
+	# Config CPLD's IOepx Port0[4] from output to input, set IOepx Port0[4].
+	i2cset -f -y 15 0x22 0x06 $p0_IOexp_val
+
+	# Enable Mpro hang detection
+	systemctl start ampere-sysfw-hang-handler.service
+
+	# Enable PLDM service
+	systemctl start pldmd.service
+}
+
+getstatus() {
+	# Get CPLD's IOepx Port0[4], if this bit is "0" scandump mode is enabled.
+	p0_IOexp_val=$(i2cget -f -y 15 0x22 0x06)
+	p0_IOexp_val=$(("$p0_IOexp_val" & (1 << 4)))
+	if [[ "$p0_IOexp_val" == "0" ]]; then
+		echo "Scandump mode is enabled"
+		exit 1
+	else
+		echo "Scandump mode is disabled"
+		exit 0
+	fi
+}
+
+# Usage of this utility
+usage() {
+	echo "Usage:"
+	echo "  - To enable Scandump mode"
+	echo "     $(basename "$0") enable"
+	echo "  - To disable Scandump mode"
+	echo "     $(basename "$0") disable"
+	echo "  - To get Scandump mode status"
+	echo "     $(basename "$0") getstatus"
+	exit 0
+}
+
+if [[ $1 == "enable" ]]; then
+	enable_scandump_mode
+elif [[ $1 == "disable" ]]; then
+	diable_scandump_mode
+elif [[ $1 == "getstatus" ]]; then
+	getstatus
+else
+	echo "Invalid mode"
+	usage
+fi
+
+exit 0