libusb 串口 android,rk3399pro通过修改内核&编译支持luat air720上网及串口通讯
编译环境：ubuntu 18.0.4的PC机
一、安装编译依赖库
sudo apt-get install repo git-core gitk git-gui gcc-arm-linux-gnueabihf u-boot-tools device-tree-compiler \
gcc-aarch64-linux-gnu mtools parted libudev-dev libusb-1.0-0-dev python-linaro-image-tools \
linaro-image-tools gcc-4.8-multilib-arm-linux-gnueabihf gcc-arm-linux-gnueabihf libssl-dev \
gcc-aarch64-linux-gnu g+conf autotools-dev libsigsegv2 m4 intltool libdrm-dev curl sed make \
binutils build-essential gcc g++ bash patch gzip bzip2 perl tar cpio python unzip rsync file bc wget \
libncurses5 libqt4-dev libglib2.0-dev libgtk2.0-dev libglade2-dev cvs git mercurial rsync openssh-client \
subversion asciidoc w3m dblatex graphviz python-matplotlib libc6:i386 libssl-dev texinfo \
liblz4-tool genext2fs lib32stdc++6
二、下载gcc-linaro-6.3.1-2017.05-x86_64_aarch64-linux-gnu
wget http://releases.linaro.org/components/toolchain/binaries/6.3-2017.05/aarch64-linux-gnu/gcc-linaro-6.3.1-2017.05-x86_64_aarch64-linux-gnu.tar.xz
三、下载rk339pro内核源码
git clone https://github.com/rockchip-toybrick/kernel
四、修改内核源文件
修改make.sh(注意改成gcc-linaro的路径)
#!/bin/bash
VERSION="2.0"
JOB=`sed -n "N;/processor/p" /proc/cpuinfo|wc -l`
DTB=toybrick-$2
TKCC=/data/software/gcc-linaro-6.3.1-2017.05-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-
function help()
{
echo "Usage: ./make.sh os board"
echo
echo "Parameter:"
echo "1) os: should be android or linux"
echo "2) board:"
echo " - prod: TB-RK3399ProD"
echo " - prop: TB-RK3399ProP"
echo " - prox: TB-RK3399ProX"
echo " - 96ai: TB-96AI"
echo
echo "e.g. ./make.sh android prod"
echo " ./make.sh android prop"
echo " ./make.sh android 96ai"
echo " ./make.sh android prox"
echo " ./make.sh linux prod"
echo " ./make.sh linux prop"
echo " ./make.sh linux 96ai"
echo " ./make.sh linux prox"
}
function make_extlinux_conf()
{
echo "label rockchip-kernel-4.4" > boot_linux/extlinux/extlinux.conf
echo " kernel /extlinux/Image" >> boot_linux/extlinux/extlinux.conf
echo " fdt /extlinux/toybrick.dtb" >> boot_linux/extlinux/extlinux.conf
echo " append earlycon=uart8250,mmio32,0xff1a0000 initrd=/initramfs-toybrick-${VERSION}.img root=PARTUUID=614e0000-0000-4b53-8000-1d28000054a9 rw rootwait rootfstype=ext4" >> boot_linux/extlinux/extlinux.conf
}
if [ $# -lt 2 ];then
help
exit 1
fi
case $1 in
android)
make rockchip_defconfig
make ARCH=arm64 rk3399pro-${DTB}-android.img -j${JOB}
;;
linux)
rm -rf boot_linux
mkdir -p boot_linux/extlinux
make rockchip_linux_defconfig
case $2 in
prod)
DTB=rk3399pro-toybrick-prod-linux
make ARCH=arm64 ${DTB}-edp.img CROSS_COMPILE=${TKCC} -j${JOB}
make ARCH=arm64 ${DTB}-mipi.img CROSS_COMPILE=${TKCC} -j${JOB}
cp -f arch/arm64/boot/dts/rockchip/${DTB}-edp.dtb boot_linux/extlinux/toybrick-edp.dtb
cp -f arch/arm64/boot/dts/rockchip/${DTB}-mipi.dtb boot_linux/extlinux/toybrick-mipi.dtb
;;
prop)
DTB=rk3399pro-toybrick-prop-linux
;;
96ai)
DTB=rk3399pro-toybrick-96ai-linux
;;
prox)
DTB=rk3399pro-toybrick-prox-linux
make ARCH=arm64 ${DTB}-edp.img -j${JOB}
make ARCH=arm64 ${DTB}-mipi.img -j${JOB}
cp -f arch/arm64/boot/dts/rockchip/${DTB}-edp.dtb boot_linux/extlinux/toybrick-edp.dtb
cp -f arch/arm64/boot/dts/rockchip/${DTB}-mipi.dtb boot_linux/extlinux/toybrick-mipi.dtb
;;
*)
help
exit 1
;;
esac
make ARCH=arm64 ${DTB}.img CROSS_COMPILE=${TKCC} -j${JOB}
cp -f arch/arm64/boot/dts/rockchip/${DTB}.dtb boot_linux/extlinux/toybrick.dtb
cp -f arch/arm64/boot/dts/rockchip/${DTB}.dtb boot_linux/extlinux/toybrick-default.dtb
cp -f arch/arm64/boot/Image boot_linux/extlinux/
make_extlinux_conf
cp -f initramfs-toybrick-${VERSION}.img boot_linux/
cp -f rescue.sh boot_linux/
if [ "`uname -i`" == "aarch64" ]; then
echo y | mke2fs -b 4096 -d boot_linux -i 8192 -t ext2 boot_linux.img $((64 * 1024 * 1024 / 4096))
else
genext2fs -b 32768 -B $((64 * 1024 * 1024 / 32768)) -d boot_linux -i 8192 -U boot_linux.img
fi
;;
*)
help
exit 1
;;
esac
exit 0
Add VID add PID
File: [KERNEL]/drivers/usb/serial/option.c
static const struct option_blacklist_info longssung_u9300_blacklist = {
.reserved = BIT(4),
};
*/
/********************************************************************/
static const struct usb_device_id option_ids[] = {
//+add by airm2m for Air72x
{ USB_DEVICE(0x1286, 0x4e3d) },
//-add by airm2m for Air72x
{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COLT) },
{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA) },
{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_LIGHT) },
{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_QUAD) },
{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_QUAD_LIGHT) },
{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_NDIS) },
五、编译
初次编译大约5分钟左右
./make.sh linux prod
编译完成后根目录会有内核镜像：boot_linux.img
六、下载内核
使用官方工具 AndroidTool_Release_v2.64，将上一步编译好的内核下载至rk3399pro(可以只下载boot_linux.img)
image.png
7、网络参数设置
一切编译好之后，将air720D插入rk3399pro的mini pcie口并且把sim卡插入(注意别把sim卡插反了)
启动后查看设备
ls /dev/ttyUSB*
设置网络参数：
设置网卡1 内网ip /etc/network/interfaces
# interfaces(5) file used by ifup(8) and ifdown(8)
# Include files from /etc/network/interfaces.d:
source-directory /etc/network/interfaces.d
auto lo
#开机自动连接网络
auto eth0
iface lo inet loopback
allow-hotplug eth0
#static表示使用固定ip，dhcp表述使用动态ip
iface eth0 inet static
#设置ip地址
address 192.168.1.8
netmask 255.255.255.0
gateway 192.168.1.1
dns-nameservers 114.114.114.114 8.8.8.8
此时查看ifconfig ,如果没有出现 rndis_host 1-1:1.0 eth1 中的 eth1 ，则发送ifconfig -a ,此时发现有eth1 但是 没有ip 地址，发送 udhcpc -i eth1 出现地址后，即可使用此网卡进行上网
#下载
sudo apt install udhcpc
#执行
udhcpc -i eth1
出现地址后，即可使用此网卡进行上网
八、通讯air720获取iccid和imei
#可用minicom工具
sudo apt install minicom
#打开串口
sudo minicom -D /dev/ttyUSB1
九、参考：