#!/bin/bash
#* Copyright (c) 2020 Intel Corporation SPDX-License-Identifier: BSD-3-Clause
# preinst script for acrn-hypervisor

acrnnative=$(ls /sys/class/ |grep vhm || true)
if [ -z "$acrnnative" ]
then
	echo "You are in ubuntu, let's pre-check whether fit acrn needs"
else
	echo "You are in acrn already, no need pre-check "
	exit 0
fi
#check  mem/cpu
cpunumsexp=4
percode=$(lscpu |awk '$1 == "Thread(s)" {print $NF}')
cputotal=$(lscpu |awk '$1 == "CPU(s):" {print $NF}')


if [[ $cputotal -eq $cpunumsexp ]]
then
        echo "CPU cores config is ok"

elif [[ $cputotal -gt $cpunumsexp ]]
then
	    echo "Error ! hyper threding config not correct!"
	    echo "CPU(s) $cputotal should be $cpunumsexp，Thread(s) per core is $percode,please disable hyperthread in bios"

elif [[ $cputotal -lt $cpunumsexp ]]
then
	    echo "Error ! hyper threding config not correct!"
	    echo "CPU(s) $cputotal should be $cpunumsexp，Thread(s) per core is $percode,please open hyperthread in bios"
fi


#check vt
vtd=$(ls -al /sys/firmware/acpi/tables |grep DMAR || true)
if [ -z "$vtd" ]
then
	echo "Error ! vt-d not enabled!"
	echo "either hw not support vt-d or bios not enabled"
fi
vtx=$(lscpu |grep VT-x)

if [ -z "$vtx" ]
then
	echo "Error ! vt-x not enabled!"
	echo "either hw not support vt-x or bios not enabled"
fi

echo "vt-x/vt-d config is ok"

#check cpu

cputype=$(lscpu |awk '$1 == "Model"'|grep Core || true)
if [ -z "$cputype" ]
then
	echo "CPU type not Core"
	echo "Xeon not support!"
	echo "Waring ! ACRN may not support your hardware!"
else
	echo "cpu type is ok"
fi


#check memory
totalmemry=200000000000

wholememory=$(cat /proc/meminfo |grep MemTotal:|awk '{print $2}')

if [[ $wholememory -gt $totalmemry ]]
then
        echo "Warning ! memory greater than 16G, please rebuild hypervisor"
        echo "if you had rebuild version please ignore"
else
	echo "memory is ok, $wholememory"
fi