RK3288使用USB GADGET实现大容量存储脚本

#!/bin/sh

UMS_EN=off
ADB_EN=off
MTP_EN=off

make_config_string()
{
tmp=C O N F I G S T R I N G i f [ − n " CONFIG_STRING if [ -n "CONFIG
S
​
TRINGif[−n"CONFIG_STRING" ]; then
CONFIG_STRING=KaTeX parse error: Expected group after '_' at position 6: {tmp}_̲{1}
else
CONFIG_STRING=$1 fi
}

parameter_init()
{
while read line
do
case “$line” in
usb_mtp_en)
MTP_EN=on
make_config_string mtp
;;
usb_adb_en)
ADB_EN=on
make_config_string adb
;;
usb_ums_en)
UMS_EN=on
make_config_string ums
;;
esac
done < $DIR/.usb_config

case "$CONFIG_STRING" in
        ums)
                PID=0x0000
                ;;
        mtp)
                PID=0x0001
                ;;
        adb)
                PID=0x0006
                ;;
        mtp_adb | adb_mtp)
                PID=0x0011
                ;;
        ums_adb | adb_ums)
                PID=0x0018
                ;;
        *)
                PID=0x0019
esac

}

configfs_init()
{
mount -t configfs none /sys/kernel/config
mkdir /sys/kernel/config/usb_gadget/rockchip -m 0770
echo 0x2207 > /sys/kernel/config/usb_gadget/rockchip/idVendor
echo $PID > /sys/kernel/config/usb_gadget/rockchip/idProduct
mkdir /sys/kernel/config/usb_gadget/rockchip/strings/0x409 -m 0770
echo “0123456789ABCDEF” > /sys/kernel/config/usb_gadget/rockchip/strings/0x409/serialnumber
echo “rockchip” > /sys/kernel/config/usb_gadget/rockchip/strings/0x409/manufacturer
echo “rk3xxx” > /sys/kernel/config/usb_gadget/rockchip/strings/0x409/product
mkdir /sys/kernel/config/usb_gadget/rockchip/configs/b.1 -m 0770
mkdir /sys/kernel/config/usb_gadget/rockchip/configs/b.1/strings/0x409 -m 0770
echo 500 > /sys/kernel/config/usb_gadget/rockchip/configs/b.1/MaxPower
echo “$CONFIG_STRING” > /sys/kernel/config/usb_gadget/rockchip/configs/b.1/strings/0x409/configuration
}

function_init()
{
if [ $UMS_EN = on ];then
mkdir /sys/kernel/config/usb_gadget/rockchip/functions/mass_storage.0
echo /dev/disk/by-partlabel/userdata > /sys/kernel/config/usb_gadget/rockchip/functions/mass_storage.0/lun.0/file
ln -s /sys/kernel/config/usb_gadget/rockchip/functions/mass_storage.0 /sys/kernel/config/usb_gadget/rockchip/configs/b.1/mass_storage.0
fi

if [ $ADB_EN = on ];then                                                                                                                       
        mkdir /sys/kernel/config/usb_gadget/rockchip/functions/mass_storage.usb0                                         
        mkfs.vfat /dev/ram0                                                                                                                    
        mount /dev/ram0 /media/usb0/                                                                                                           
        echo /dev/ram0 > /sys/kernel/config/usb_gadget/rockchip/functions/mass_storage.usb0/lun.0/file                                         
        ln -s /sys/kernel/config/usb_gadget/rockchip/functions/mass_storage.usb0 /sys/kernel/config/usb_gadget/rockchip/configs/b.1/
fi                                                                                                                                             
                                                                                                                                               
if [ $MTP_EN = on ];then                                                                                                                       
        mkdir /sys/kernel/config/usb_gadget/rockchip/functions/mtp.gs0                                                                         
        ln -s /sys/kernel/config/usb_gadget/rockchip/functions/mtp.gs0 /sys/kernel/config/usb_gadget/rockchip/configs/b.1/mtp.gs0              
fi

}

case “$1” in
start)
DIR=$(cd dirname $0; pwd)
if [ ! -e “$DIR/.usb_config” ]; then
echo “$0: Cannot find .usb_config”
exit 0
fi

parameter_init                                                                                                                      
if [ -z $CONFIG_STRING ]; then                                                                                                      
        echo "$0: no function be selected"                                                                                          
        exit 0                                                                                                                      
fi                                                                                                                                             
configfs_init                                                                                                                       
function_init
        UDC=`ls /sys/class/udc/ | awk '{print $1}'`                                                                                                    
echo $UDC > /sys/kernel/config/usb_gadget/rockchip/UDC                                                                              
;;

stop)
echo “none” > /sys/kernel/config/usb_gadget/rockchip/UDC
;;
restart|reload)
;;
*)
echo “Usage: $0 {start|stop|restart}”
exit 1
esac

原作者：jasonnie17