[buildroot] Fix some runtime errors

	1. Add libc for musl risc64v0p7
	2. Modify the buildroot compilation option
	3. add strace tool

Change-Id: Id72ed4afa80c6e09aa21592f0013fc4efd683b7e

buildroot-2021.05/board/cvitek/CV180X/overlay/.gitignore

+mnt/system/
\ No newline at end of file

buildroot-2021.05/board/cvitek/CV180X/overlay/etc/init.d/S99user

+#!/bin/sh
+${CVI_SHOPTS}
+#
+# Start firmware
+#
+export USERDATAPATH=/mnt/data/
+export SYSTEMPATH=/mnt/system/
+
+case "$1" in
+  start)
+        echo "init mpp system..."
+        if [ -d $SYSTEMPATH/ko ]; then
+                sh $SYSTEMPATH/ko/loadsystemko.sh
+        fi
+
+        echo "Starting app..."
+        if [ -f $USERDATAPATH/auto.sh ]; then
+                usleep 30000
+                . $USERDATAPATH/auto.sh &
+		exit 1
+        fi
+	if [ -f $SYSTEMPATH/auto.sh ]; then
+                usleep 30000
+                . $SYSTEMPATH/auto.sh &
+        fi
+        ;;
+  stop)
+        ;;
+  restart|reload)
+        ;;
+  *)
+        echo "Usage: $0 {start|stop|restart}"
+        exit 1
+esac
+
+exit $?
+

buildroot-2021.05/board/cvitek/CV180X/overlay/etc/profile

+export PATH="/bin:/sbin:/usr/bin:/usr/sbin"
+export LD_LIBRARY_PATH="/mnt/system/lib"
+
+if [ "$PS1" ]; then
+        if [ "`id -u`" -eq 0 ]; then
+                export PS1='\u@\h# '
+        else
+                export PS1='\u@\h$ '
+        fi
+fi
+
+export EDITOR='/bin/vi'
+
+# Source configuration files from /etc/profile.d
+for i in /etc/profile.d/*.sh ; do
+        if [ -r "$i" ]; then
+                . $i
+        fi
+done
+unset i
\ No newline at end of file

buildroot-2021.05/board/cvitek/CV180X/overlay/etc/run_usb.sh

+CLASS=acm
+VID=0x3346
+PID=0x1003
+MSC_PID=0x1008
+RNDIS_PID=0x1009
+UVC_PID=0x100A
+UAC_PID=0x100B
+ADB_VID=0x18D1
+ADB_PID=0x4EE0
+ADB_PID_M1=0x4EE2
+ADB_PID_M2=0x4EE4
+MANUFACTURER="Cvitek"
+PRODUCT="USB Com Port"
+PRODUCT_RNDIS="RNDIS"
+PRODUCT_UVC="UVC"
+PRODUCT_UAC="UAC"
+PRODUCT_ADB="ADB"
+ADBD_PATH=/usr/bin/
+SERIAL="0123456789"
+MSC_FILE=$3
+CVI_DIR=/tmp/usb
+CVI_GADGET=$CVI_DIR/usb_gadget/cvitek
+CVI_FUNC=$CVI_GADGET/functions
+FUNC_NUM=0
+MAX_EP_NUM=4
+TMP_NUM=0
+INTF_NUM=0
+EP_IN=0
+EP_OUT=0
+
+case "$2" in
+  acm)
+	CLASS=acm
+	;;
+  msc)
+	CLASS=mass_storage
+	PID=$MSC_PID
+	;;
+  cvg)
+	CLASS=cvg
+	;;
+  rndis)
+	CLASS=rndis
+	PID=$RNDIS_PID
+	PRODUCT=$PRODUCT_RNDIS
+	;;
+  uvc)
+	CLASS=uvc
+	PID=$UVC_PID
+	PRODUCT=$PRODUCT_UVC
+	;;
+  uac1)
+	CLASS=uac1
+	PID=$UAC_PID
+	PRODUCT=$PRODUCT_UAC
+	;;
+  adb)
+	CLASS=ffs.adb
+	VID=$ADB_VID
+	PID=$ADB_PID
+	PRODUCT=$PRODUCT_ADB
+	;;
+  *)
+	if [ "$1" = "probe" ] ; then
+	  echo "Usage: $0 probe {acm|msc|cvg|rndis|uvc|uac1|adb}"
+	  exit 1
+	fi
+esac
+
+calc_func() {
+  FUNC_NUM=$(ls $CVI_GADGET/functions -l | grep ^d | wc -l)
+  echo "$FUNC_NUM file(s)"
+}
+
+res_check() {
+  TMP_NUM=$(find $CVI_GADGET/functions/ -name "acm*" | wc -l)
+  EP_OUT=$(($EP_OUT+$TMP_NUM))
+  TMP_NUM=$(($TMP_NUM * 2))
+  EP_IN=$(($EP_IN+$TMP_NUM))
+  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
+  TMP_NUM=$(find $CVI_GADGET/functions/ -name "mass_storage*" | wc -l)
+  EP_IN=$(($EP_IN+$TMP_NUM))
+  EP_OUT=$(($EP_OUT+$TMP_NUM))
+  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
+  TMP_NUM=$(find $CVI_GADGET/functions/ -name "cvg*" | wc -l)
+  EP_IN=$(($EP_IN+$TMP_NUM))
+  EP_OUT=$(($EP_OUT+$TMP_NUM))
+  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
+  TMP_NUM=$(find $CVI_GADGET/functions/ -name "rndis*" | wc -l)
+  EP_OUT=$(($EP_OUT+$TMP_NUM))
+  TMP_NUM=$(($TMP_NUM * 2))
+  EP_IN=$(($EP_IN+$TMP_NUM))
+  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
+  TMP_NUM=$(find $CVI_GADGET/functions/ -name "uvc*" | wc -l)
+  TMP_NUM=$(($TMP_NUM * 2))
+  EP_IN=$(($EP_IN+$TMP_NUM))
+  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
+  TMP_NUM=$(find $CVI_GADGET/functions/ -name "uac1*" | wc -l)
+  TMP_NUM=$(($TMP_NUM * 2))
+  EP_IN=$(($EP_IN+$TMP_NUM))
+  EP_OUT=$(($EP_OUT+$TMP_NUM))
+  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
+  TMP_NUM=$(find $CVI_GADGET/functions/ -name ffs.adb | wc -l)
+  EP_IN=$(($EP_IN+$TMP_NUM))
+  EP_OUT=$(($EP_OUT+$TMP_NUM))
+  INTF_NUM=$(($INTF_NUM+$TMP_NUM))
+
+  if [ "$CLASS" = "acm" ] ; then
+    EP_IN=$(($EP_IN+2))
+    EP_OUT=$(($EP_OUT+1))
+  fi
+  if [ "$CLASS" = "mass_storage" ] ; then
+    EP_IN=$(($EP_IN+1))
+    EP_OUT=$(($EP_OUT+1))
+  fi
+  if [ "$CLASS" = "cvg" ] ; then
+    EP_IN=$(($EP_IN+1))
+    EP_OUT=$(($EP_OUT+1))
+  fi
+  if [ "$CLASS" = "rndis" ] ; then
+    EP_IN=$(($EP_IN+2))
+    EP_OUT=$(($EP_OUT+1))
+  fi
+  if [ "$CLASS" = "uvc" ] ; then
+    EP_IN=$(($EP_IN+2))
+  fi
+  if [ "$CLASS" = "uac1" ] ; then
+    EP_IN=$(($EP_IN+1))
+    EP_OUT=$(($EP_OUT+1))
+  fi
+  if [ "$CLASS" = "ffs.adb" ] ; then
+    EP_IN=$(($EP_IN+1))
+    EP_OUT=$(($EP_OUT+1))
+  fi
+  echo "$EP_IN in ep"
+  echo "$EP_OUT out ep"
+  if [ $EP_IN -gt $MAX_EP_NUM ]; then
+    echo "reach maximum resource"
+    exit 1
+  fi
+  if [ $EP_OUT -gt $MAX_EP_NUM ]; then
+    echo "reach maximum resource"
+    exit 1
+  fi
+}
+
+probe() {
+  if [ ! -d $CVI_DIR ]; then
+    mkdir $CVI_DIR
+  fi
+  if [ ! -d $CVI_DIR/usb_gadget ]; then
+    # Enale USB ConfigFS
+    mount none $CVI_DIR -t configfs
+    # Create gadget dev
+    mkdir $CVI_GADGET
+    # Set the VID and PID
+    echo $VID >$CVI_GADGET/idVendor
+    echo $PID >$CVI_GADGET/idProduct
+    # Set the product information string
+    mkdir $CVI_GADGET/strings/0x409
+    echo $MANUFACTURER>$CVI_GADGET/strings/0x409/manufacturer
+    echo $PRODUCT>$CVI_GADGET/strings/0x409/product
+    echo $SERIAL>$CVI_GADGET/strings/0x409/serialnumber
+    # Set the USB configuration
+    mkdir $CVI_GADGET/configs/c.1
+    mkdir $CVI_GADGET/configs/c.1/strings/0x409
+    echo "config1">$CVI_GADGET/configs/c.1/strings/0x409/configuration
+    # Set the MaxPower of USB descriptor
+    echo 120 >$CVI_GADGET/configs/c.1/MaxPower
+  fi
+  # get current functions number
+  calc_func
+  # assign the class code for composite device
+  if [ ! $FUNC_NUM -eq 0 ]; then
+    echo 0xEF >$CVI_GADGET/bDeviceClass
+    echo 0x02 >$CVI_GADGET/bDeviceSubClass
+    echo 0x01 >$CVI_GADGET/bDeviceProtocol
+  fi
+  # resource check
+  res_check
+  # create the desired function
+  if [ "$CLASS" = "ffs.adb" ] ; then
+    # adb shall be the last function to probe. Override the pid/vid
+    echo $VID >$CVI_GADGET/idVendor
+    echo $PID >$CVI_GADGET/idProduct
+    # choose pid for different function number
+    if [ $INTF_NUM -eq 1 ]; then
+      echo $ADB_PID_M1 >$CVI_GADGET/idProduct
+    fi
+    if [ $INTF_NUM -eq 2 ]; then
+      echo $ADB_PID_M2 >$CVI_GADGET/idProduct
+    fi
+    mkdir $CVI_GADGET/functions/$CLASS
+  else
+    mkdir $CVI_GADGET/functions/$CLASS.usb$FUNC_NUM
+  fi
+  if [ "$CLASS" = "mass_storage" ] ; then
+    echo $MSC_FILE >$CVI_GADGET/functions/$CLASS.usb$FUNC_NUM/lun.0/file
+  fi
+  if [ "$CLASS" = "rndis" ] ; then
+    #OS STRING
+    echo 1 >$CVI_GADGET/os_desc/use
+    echo 0xcd >$CVI_GADGET/os_desc/b_vendor_code
+    echo MSFT100 >$CVI_GADGET/os_desc/qw_sign
+    #COMPATIBLE ID
+    echo RNDIS >$CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/compatible_id
+    #MAKE c.1 THE ONE ASSOCIATED WITH OS DESCRIPTORS
+    ln -s $CVI_GADGET/configs/c.1 $CVI_GADGET/os_desc
+    #MAKE "Icons" EXTENDED PROPERTY
+    mkdir $CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Icons
+    echo 2 >$CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Icons/type
+    echo "%SystemRoot%\\system32\\shell32.dll,-233" >$CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Icons/data
+    #MAKE "Label" EXTENDED PROPERTY
+    mkdir $CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Label
+    echo 1 >$CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Label/type
+    echo "XYZ Device" >$CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Label/data
+  fi
+
+}
+
+start() {
+  # link this function to the configuration
+  calc_func
+  if [ $FUNC_NUM -eq 0 ]; then
+    echo "Functions Empty!"
+    exit 1
+  fi
+  if [ -d $CVI_GADGET/functions/ffs.adb ]; then
+    FUNC_NUM=$(($FUNC_NUM-1))
+  fi
+  for i in `seq 0 $(($FUNC_NUM-1))`;
+  do
+    find $CVI_GADGET/functions/ -name "*.usb$i" | xargs -I % ln -s % $CVI_GADGET/configs/c.1
+  done
+  if [ -d $CVI_GADGET/functions/ffs.adb ]; then
+    ln -s $CVI_GADGET/functions/ffs.adb $CVI_GADGET/configs/c.1
+    mkdir /dev/usb-ffs/adb -p
+    mount -t functionfs adb /dev/usb-ffs/adb
+    if [ -f $ADBD_PATH/adbd ]; then
+	$ADBD_PATH/adbd &
+    fi
+  else
+    # Start the gadget driver
+    UDC=`ls /sys/class/udc/ | awk '{print $1}'`
+    echo ${UDC} >$CVI_GADGET/UDC
+  fi
+}
+
+stop() {
+  if [ -d $CVI_GADGET/configs/c.1/ffs.adb ]; then
+    pkill adbd
+    rm $CVI_GADGET/configs/c.1/ffs.adb
+  else
+    echo "" >$CVI_GADGET/UDC
+  fi
+  find $CVI_GADGET/configs/ -name "*.usb*" | xargs rm -f
+  rmdir $CVI_GADGET/configs/c.*/strings/0x409/
+  tmp_dirs=$(find $CVI_GADGET/os_desc/c.* -type d)
+  if [ -n tmp_dirs ]; then
+    echo "remove os_desc!"
+    rm -rf $CVI_GADGET/os_desc/c.*/
+    find $CVI_GADGET/functions/ -name Icons | xargs rmdir
+    find $CVI_GADGET/functions/ -name Label | xargs rmdir
+  fi
+  rmdir $CVI_GADGET/configs/c.*/
+  rmdir $CVI_GADGET/functions/*
+  rmdir $CVI_GADGET/strings/0x409/
+  rmdir $CVI_GADGET
+  umount $CVI_DIR
+  rmdir $CVI_DIR
+}
+
+case "$1" in
+  start)
+	start
+	;;
+  stop)
+	stop
+	;;
+  probe)
+	probe
+	;;
+  UDC)
+	ls /sys/class/udc/ >$CVI_GADGET/UDC
+	;;
+  *)
+	echo "Usage: $0 probe {acm|msc|cvg|uvc|uac1} {file (msc)}"
+	echo "Usage: $0 start"
+	echo "Usage: $0 stop"
+	exit 1
+esac
+exit $?

buildroot-2021.05/board/cvitek/CV180X/overlay/etc/uhubon.sh

+GPIO_HUBPORT_EN=449
+GPIO_ROLESEL=450
+GPIO_HUBRST=451
+SYS_GPIO=/sys/class/gpio
+
+hub_on() {
+  echo "turn on usb hub"
+  if [ ! -d $SYS_GPIO/gpio$GPIO_HUBPORT_EN ]; then
+      echo $GPIO_HUBPORT_EN >/sys/class/gpio/export
+  fi
+
+  if [ ! -d $SYS_GPIO/gpio$GPIO_ROLESEL ]; then
+      echo $GPIO_ROLESEL >/sys/class/gpio/export
+  fi
+
+  if [ ! -d $SYS_GPIO/gpio$GPIO_HUBRST ]; then
+      echo $GPIO_HUBRST >/sys/class/gpio/export
+  fi
+
+  echo "out" >/sys/class/gpio/gpio$GPIO_HUBPORT_EN/direction
+  echo "out" >/sys/class/gpio/gpio$GPIO_ROLESEL/direction
+  echo "out" >/sys/class/gpio/gpio$GPIO_HUBRST/direction
+
+  echo 1 >/sys/class/gpio/gpio$GPIO_HUBPORT_EN/value
+  echo 0 >/sys/class/gpio/gpio$GPIO_ROLESEL/value
+  echo 0 >/sys/class/gpio/gpio$GPIO_HUBRST/value
+}
+
+hub_off() {
+  echo "turn off usb hub"
+  if [ ! -d $SYS_GPIO/gpio$GPIO_HUBPORT_EN ]; then
+      echo $GPIO_HUBPORT_EN >/sys/class/gpio/export
+  fi
+
+  if [ ! -d $SYS_GPIO/gpio$GPIO_ROLESEL ]; then
+      echo $GPIO_ROLESEL >/sys/class/gpio/export
+  fi
+
+  if [ ! -d $SYS_GPIO/gpio$GPIO_HUBRST ]; then
+      echo $GPIO_HUBRST >/sys/class/gpio/export
+  fi
+
+  echo "out" >/sys/class/gpio/gpio$GPIO_HUBPORT_EN/direction
+  echo "out" >/sys/class/gpio/gpio$GPIO_ROLESEL/direction
+  echo "out" >/sys/class/gpio/gpio$GPIO_HUBRST/direction
+
+  echo 0 >/sys/class/gpio/gpio$GPIO_HUBPORT_EN/value
+  echo 1 >/sys/class/gpio/gpio$GPIO_ROLESEL/value
+  echo 1 >/sys/class/gpio/gpio$GPIO_HUBRST/value
+}
+
+inst_mod() {
+  insmod /mnt/system/ko/configfs.ko
+  insmod /mnt/system/ko/libcomposite.ko
+  insmod /mnt/system/ko/u_serial.ko
+  insmod /mnt/system/ko/usb_f_acm.ko
+  insmod /mnt/system/ko/cvi_usb_f_cvg.ko
+  insmod /mnt/system/ko/usb_f_uvc.ko
+  insmod /mnt/system/ko/usb_f_fs.ko
+  insmod /mnt/system/ko/u_audio.ko
+  insmod /mnt/system/ko/usb_f_uac1.ko
+  insmod /mnt/system/ko/usb_f_serial.ko
+  insmod /mnt/system/ko/usb_f_mass_storage.ko
+  insmod /mnt/system/ko/u_ether.ko
+  insmod /mnt/system/ko/usb_f_ecm.ko
+  insmod /mnt/system/ko/usb_f_eem.ko
+  insmod /mnt/system/ko/usb_f_rndis.ko
+}
+
+case "$1" in
+  host)
+	insmod /mnt/system/ko/dwc2.ko
+  echo host > /proc/cviusb/otg_role
+	;;
+  device)
+	echo device > /proc/cviusb/otg_role
+	;;
+  *)
+	echo "Usage: $0 host"
+	echo "Usage: $0 device"
+	exit 1
+esac
+exit $?

buildroot-2021.05/board/cvitek/CV180X/overlay/lib/ld-musl-riscv64v0p7_xthead.so.1

+../usr/lib64v0p7_xthead/lp64d/libc.so
\ No newline at end of file

buildroot-2021.05/board/cvitek/CV180X/overlay/mnt/system/S99msc

+#!/bin/sh
+
+case "$1" in
+  start)
+    printf "Starting msc: "
+    /etc/uhubon.sh device
+    /etc/run_usb.sh probe msc /dev/mmcblk0p1
+    /etc/run_usb.sh start
+    [ $? = 0 ] && echo "OK" || echo "FAIL"
+    ;;
+  stop)
+    printf "Stopping msc: "
+    echo "OK"
+    ;;
+  restart|reload)
+    "$0" stop
+    "$0" start
+    ;;
+  *)
+    echo "Usage: $0 {start|stop|restart}"
+    exit 1
+esac
+
+exit $?
\ No newline at end of file

buildroot-2021.05/configs/cvitek_CV180X_musl_riscv64_defconfig

@@ -161,7 +161,7 @@ BR2_TOOLCHAIN_SUPPORTS_PIE=y
 BR2_TOOLCHAIN_EXTRA_LIBS=""
 BR2_USE_MMU=y
 BR2_TARGET_OPTIMIZATION=""
-BR2_TARGET_LDFLAGS="-march=rv64imafdcvxthead -mcmodel=medany -mabi=lp64d"
+BR2_TARGET_LDFLAGS="-mcpu=c906fdv -march=rv64imafdcv0p7xthead -mcmodel=medany -mabi=lp64d"
 # BR2_ECLIPSE_REGISTER is not set
 BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_0=y
 BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_1=y
@@ -464,3 +464,5 @@ BR2_TARGET_ROOTFS_EXT2_EXTRA_INODES=0
 # Legacy options removed in 2017.05
 #
 BR2_TARGET_ROOTFS_EXT2_EXTRA_BLOCKS=0
+
+BR2_PACKAGE_STRACE=y