155 lines
3.4 KiB
Bash
Executable File
155 lines
3.4 KiB
Bash
Executable File
#!/bin/sh
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#set -xv
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SELF=${SELF:-$(basename $0)}
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source /usr/local/lib/utils
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source usb_gadget
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# The composite gadget directory
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GADGET=/sys/kernel/config/usb_gadget/FunKey
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# USB VID for Intel
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ID_VENDOR="0x8087"
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# USB PID for Multifunction Composite Gadget
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ID_PRODUCT="0x011e"
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# Get the CPU serial number
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SERIAL="$(grep Serial /proc/cpuinfo | sed 's/Serial\s*: \(\w*\)/\1/')"
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# Initialize the ADB
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init_adb() {
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# Don't proceed if existing gadget is present
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if [ -e ${GADGET} ]; then
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return 0
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fi
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# Get the legacy drivers out of the way
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modprobe -r g_ether
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modprobe -r g_mass_storage
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# Load the libcomposite USB driver, configfs and various other drivers
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modprobe libcomposite
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modprobe usb_f_serial
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modprobe usb_f_fs
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modprobe usb_f_acm
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# USB Device Controller Driver
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local udc_driver=$(ls /sys/class/udc | cut -f1 | head -n 1)
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# Create our gadget directory
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mkdir ${GADGET}
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mkdir ${GADGET}/strings/0x409
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mkdir ${GADGET}/configs/FunKey.1
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mkdir ${GADGET}/configs/FunKey.1/strings/0x409
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mkdir ${GADGET}/functions/acm.GS0
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mkdir ${GADGET}/functions/ffs.adb
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# USB VID and PID
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echo ${ID_VENDOR} > ${GADGET}/idVendor
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echo ${ID_PRODUCT} > ${GADGET}/idProduct
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# Device String Descriptiors
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echo "Intel" > ${GADGET}/strings/0x409/manufacturer
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echo "FunKey S" > ${GADGET}/strings/0x409/product
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echo ${SERIAL} > ${GADGET}/strings/0x409/serialnumber
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# Configuration
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# Maximum power is 120 mA
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echo 120 > ${GADGET}/configs/FunKey.1/MaxPower
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# Configuration String Descriptors
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echo "ADB+CDC" > ${GADGET}/configs/FunKey.1/strings/0x409/configuration
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# Add the ACM function to the FunKey.1 configuration
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ln -s ${GADGET}/functions/acm.GS0 ${GADGET}/configs/FunKey.1
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# Add the FunctionFS function to the FunKey.1 configuration
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ln -s ${GADGET}/functions/ffs.adb ${GADGET}/configs/FunKey.1
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# Create the function filesystem
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mkdir /dev/usb-ffs
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mkdir /dev/usb-ffs/adb
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# Mount the ADB function filesystem
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mount -t functionfs adb /dev/usb-ffs/adb
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# Bring up the loopback network
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ifup lo
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# Launch the ADB daemon
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adbd >/dev/null &
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# Sleeping is required to wait for the UDC to come up
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sleep 5
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# Bind the USB Gadget
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echo ${udc_driver} > ${GADGET}/UDC
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return 0
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}
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# Deinitialize the ADB
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deinit_adb() {
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# Unbind the device
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echo > ${GADGET}/UDC
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# Kill the ADB daemon
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killall adbd
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# Bring down the local network
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ifdown lo
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# Unmount the ADB function filesystem
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umount /dev/usb-ffs/adb
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# Delete the function filesystem
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rmdir /dev/usb-ffs/adb
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rmdir /dev/usb-ffs
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# Remove functions from configurations
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rm ${GADGET}/configs/FunKey.1/acm.GS0
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rm ${GADGET}/configs/FunKey.1/ffs.adb
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# Remove string directories in configurations
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rmdir ${GADGET}/configs/FunKey.1/strings/0x409
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# Remove configurations
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rmdir ${GADGET}/configs/FunKey.1
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# Remove functions
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rmdir ${GADGET}/functions/acm.GS0
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rmdir ${GADGET}/functions/ffs.adb
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# Remove strings
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rmdir ${GADGET}/strings/0x409
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# Finallyy remove the gadget
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rmdir ${GADGET}
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# Unload the kernel modules
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modprobe -r usb_f_serial usb_f_fs usb_f_acm
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}
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case "$1" in
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start)
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deinit_usb_gadget
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init_adb
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;;
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stop)
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deinit_adb
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init_usb_gadget
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;;
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*)
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die 15 "Usage $0 {start|stop}"
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;;
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esac
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exit $?
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