【米尔瑞萨RZ/G2L开发板-创新应用】开启ADB devices功能
本文介绍，如何在开发板上开启ADB功能，方便后期的文件上传，等功能。毕竟，ADB功能较多，调试更为方便。包括如下步骤：
1）kernel开启ADB相关的CONFIG配置宏
1.1）yocto recipes目录结构
1.2）USB gadget相关配置宏
CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
CONFIG_USB_MON=y
USB_GADGET_DEBUG=y
CONFIG_USB_GADGET_DEBUG=y
CONFIG_USB_GADGET_DEBUG_FILES=y
CONFIG_USB_GADGET_DEBUG_FS=y
CONFIG_USB_CONFIGFS=y
CONFIG_USB_FUNCTIONFS=m
CONFIG_USB_G_SERIAL=m
CONFIG_USB_U_ETHER=y
CONFIG_USB_F_ECM=y
CONFIG_USB_F_SUBSET=y
CONFIG_USB_F_RNDIS=y
CONFIG_USB_F_MASS_STORAGE=y
CONFIG_USB_CONFIGFS_SERIAL=y
CONFIG_USB_CONFIGFS_ACM=y
CONFIG_USB_CONFIGFS_OBEX=y
CONFIG_USB_CONFIGFS_NCM=y
CONFIG_USB_CONFIGFS_ECM=y
CONFIG_USB_CONFIGFS_ECM_SUBSET=y
CONFIG_USB_CONFIGFS_RNDIS=y
CONFIG_USB_CONFIGFS_EEM=y
CONFIG_USB_CONFIGFS_MASS_STORAGE=y
CONFIG_USB_CONFIGFS_F_LB_SS=y
CONFIG_USB_CONFIGFS_F_FS=y
CONFIG_USB_CONFIGFS_F_UAC1=y
CONFIG_USB_CONFIGFS_F_MIDI=y
CONFIG_USB_CONFIGFS_F_HID=y
CONFIG_USB_CONFIGFS_F_UVC=y
CONFIG_USB_CONFIGFS_F_PRINTER=y2）增加usb gadget相关的recipes文件
2.1）目录结构如下
增加usb-start_1.0.bb文件，用来编译以及打包usb gadget相关的配置。
2.2）由于当前开发板使用systemd管理开机自启服务，因此需要在usb-start_1.0.bb文件当中，也需要使用systemd管理开机自启服务。
2.3）usb-start_1.0.bb文件内容如下。
#
# USB composite device configuration
#
SUMMARY = "USB composite device configuration"
SECTION = "examples"
LICENSE = "CLOSED"
SRC_URI = " \
file://launch_adbd \
file://usb_start.service \
file://usb_start.sh \
"
S = "${WORKDIR}"
do_install() {
install -m 0755 usb_start.sh -D ${D}${sysconfdir}/init.d/usb_start.sh
install -m 0755 launch_adbd-D ${D}${sysconfdir}/launch_adbd
install -m 0644 usb_start.service -D ${D}${systemd_unitdir}/system/usb_start.service
if [ ! -d ${D}${systemd_unitdir}/system/multi-user.target.wants];then
mkdir ${D}${systemd_unitdir}/system/multi-user.target.wants
else
echo ${D}${systemd_unitdir}/system/multi-user.target.wants exist
fi
ln -sf ${systemd_unitdir}/system/usb_start.service ${D}${systemd_unitdir}/system/multi-user.target.wants/usb_start.service
}
FILES_${PN} += "${systemd_unitdir}/system"
FILES_${PN} += "${systemd_unitdir}/system/local-fs.target.wants/"2.4）launch_adbd文件内容如下
#! /bin/sh
#
# Copyright (c) 2017, The Linux Foundation. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following
# disclaimer in the documentation and/or other materials provided
# with the distribution.
# * Neither the name of The Linux Foundation nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
# ARE DISCLAIMED.IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
# IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
export TERM=linux
DAEMON="adbd"
PIDFILE="/var/run/$DAEMON.pid"
if [ -f /etc/default/adbd ]; then
echo "/etc/default/adbd" > /dev/kmsg
. /etc/default/adbd
fi
echo "Launch adb is starting adbd... "
start-stop-daemon -b -m -S -q -p "$PIDFILE" -x "/usr/bin/adbd"
# If UDC is not set up set it up.
if [ -z /sys/kernel/config/usb_gadget/g1/UDC ]; then
udcname=`ls -1 /sys/class/udc | head -n 1`
echo -n "udcname $udcname" > /dev/kmsg
echo $udcname > /sys/kernel/config/usb_gadget/g1/UDC
fi
echo -n "Launch adbd. done" > /dev/kmsg
exit 0
2.5）usb_start.service文件内容如下
Description=Renesas usb start
After=auditd.service
Type=simple
RemainAfterExit=yes
#Restart=on-failure
#RestartSec=5s
#Nice=-5
ExecStart=/etc/init.d/usb_start.sh start
ExecStop=/etc/init.d/usb_start.sh stop
WantedBy=multi-user.target
2.6）usb_start.sh文件内容如下
#!/bin/sh
DAEMON="start_usb"
PIDFILE="/var/run/$DAEMON.pid"
UpdateLog()
{
echo "${1}" 2>&1 | tee /dev/kmsg
}
run_usb_configfs() {
usb_vid=0x0BB8
usb_pid=0x5300
manu_string="Renesas_Manufacturer"
prod_string="Renesas_Product"
usb_maxpower=500
#serialnum=`devmem 0x5c005238`
serialnum="123456789"
#func_str="ecm.ecm,ffs.adb,gser.0,uac1.uac1,mass_storage.0,ncm.0,rndis.rndis"
#func_str="ecm.ecm,ffs.adb,gser.0,uac1.uac1,mass_storage.0,ncm.0"
#func_str="gser.0,gser.1,gser.2,gser.3,ffs.adb,uac1.uac1"
#func_str="ecm.ecm,gser.0,ffs.adb,uac1.uac1"
#func_str="ffs.adb,uac1.uac1"
func_str="ffs.adb"
UpdateLog "start adb"
pkill adbd
/etc/launch_adbd start
sleep 1
cd /sys/kernel/config/usb_gadget/g1
echo $usb_vid > idVendor
echo $usb_pid > idProduct
echo 0xA0 > configs/c.1/bmAttributes
echo "UAC_SER_RMNET" > configs/c.1/strings/0x409/configuration
echo $manu_string > strings/0x409/manufacturer
echo $prod_string > strings/0x409/product
echo $serialnum > strings/0x409/serialnumber
echo $usb_maxpower > /sys/kernel/config/usb_gadget/g1/configs/c.1/MaxPower
funcs=$(echo $func_str |tr "," "\n")
func_index=1
for func in $funcs
do
echo "ln $func $func_index"
ln -s functions/$func configs/c.1/f$func_index
func_index=$((func_index+1))
done
UpdateLog "binding UDC with Gadget ...\n" $1
echo $1 > UDC
cd /
}
start() {
UpdateLog 'Starting %s: \n' $DAEMON
#depmod
#modprobe libcomposite
#sleep 1
#mount -t configfs none /sys/kernel/config
if [ -d /sys/kernel/config/usb_gadget ];then
UpdateLog "Configuring the USB gadget using ConfigFS"
cd /sys/kernel/config/usb_gadget/
mkdir g1
cd g1
mkdir strings/0x409
mkdir configs/c.1
mkdir configs/c.1/strings/0x409
mkdir functions/mass_storage.0
mkdir functions/mass_storage.1
mkdir functions/ffs.adb
mkdir functions/gser.0
mkdir functions/gser.1
mkdir functions/gser.2
mkdir functions/gser.3
mkdir functions/ncm.0
mkdir functions/uac1.uac1
mkdir functions/rndis.rndis
mkdir functions/ecm.ecm
if [ ! -s "/etc/adb_devid" ]; then
#serialnum=`devmem 0x5c005238`
serialnum="123456789"
echo $serialnum > /etc/adb_devid
sync
fi
udcname=`ls /sys/class/udc`
UpdateLog "udcname=$udcname"
run_usb_configfs $udcname &
cd /
fi
#mount functionfs
mkdir -p /dev/usb-ffs/adb
mount -o uid=2000,gid=2000 -t functionfs adb /dev/usb-ffs/adb
#mount -o remount,gid=5,mod=620 /dev/pts
UpdateLog "usb.service initialized successfully"
}
stop() {
UpdateLog 'Stopping %s: ' "$DAEMON"
if [ -d /sys/kernel/config/usb_gadget ];then
UpdateLog "Stop USB Android Gadget"
echo none > /sys/kernel/config/usb_gadget/g1/UDC
UpdateLog -n "usb.service stopped successfully"
fi
}
restart() {
stop
sleep 1
start
}
case "$1" in
start|stop|restart)
"$1";;
reload)
# Restart, since there is no true "reload" feature.
restart;;
*)
echo "Usage: $0 {start|stop|restart|reload}"
exit 1
esac
3）打包usb-start相关的recipes文件到根文件系统当中
4）USB gadget ADB功能测试
顺便请教一个问题，当前使用123456789作为ADB设备的serialnumber，如果多个开发板同时接入一台host设备，那么就会
因为serialnumber统一，而导致无法区分adb devices。因此，需要使用SOC芯片的 Unique ID作为serialnumber。
我在r01uh0914ej0110-rzg2l-rzg2lc.pdf文件当中，并没有找到Unique ID的寄存器地址，以及读取方法，有知道的，方便告知一下，
万分感谢！！！:handshake 找到了这个寄存器，LSI Device ID Register (SYS_DEVID)
设备ID，devmem 0x11020A04
root@myir-yg2lx-1g:/lib/systemd/system# devmem 0x11020A04
0x4841C447
你能上传一下adbd这个执行文件吗？多谢！:P lint019 发表于 2024-3-5 23:21
你能上传一下adbd这个执行文件吗？多谢！
我已经编译好了，见附件。哈哈。
结合上面的步骤，可以使用adb了
yocto构建系统当中，增加一个android-tools依赖，即可。
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