本文适用OpenHarmony开源鸿蒙系统,本次使用的是开源鸿蒙主板,搭载瑞芯微RK3568芯片。深圳触觉智能专注研发生产OpenHarmony开源鸿蒙硬件,包括核心板、开发板、嵌入式主板,工控整机等,提供瑞芯微RK3566、RK3568、RK3588、RK3562、RK3576等国产化嵌入式产品方案。
一、查看文件路径
首先init.rkxxx.cfg文件在系统路径/vendor/etc/,如下图所示:
二、文件传至本地
将需要需要修改的cfg文件从文件系统中拉下来放在本地目录,命令是:hdc file recv '系统路径' '本地文件路径',如下图所示:
C:\Users\industio>hdc file recv /vendor/etc/init.rk3568.cfg D:\
[I][2024-07-25 10:49:35] HdcFile::TransferSummary success
FileTransfer finish, Size:3581, File count = 1, time:127ms rate:28.20kB/s
三、修改文件
在cfg文件中增加权限,注意在对文件修改不要使用TAB键,复制前一行代码后再修改防止出错
{
"import" : [
"init.${ohos.boot.hardware}.usb.cfg"
],
"jobs" : [{
"name" : "pre-init",
"cmds" : [
"write /proc/sys/vm/min_free_kbytes 10240",
"mount debugfs /sys/kernel/debug /sys/kernel/debug mode=755",
"write /sys/kernel/debug/hisi_inno_phy/role peripheral"
]
}, {
"name" : "init",
"cmds" : [
"write /proc/1/oom_score_adj -1000",
"chown system system /sys/kernel/hungtask/userlist",
"symlink /dev/block/platform/fe310000.sdhci/by-name /dev/block/by-name"
]
}, {
"name" : "boot", //在此位置添加设备权限
"cmds" : [
"write /sys/block/zram0/disksize 1024M",
"mkswap /dev/block/zram0",
"swapon /dev/block/zram0",
"chmod 777 /dev/ttyAMA2",
+ "chmod 666 /dev/bus/usb/005/001"
+ "chmod 666 /dev/bus/usb/005/002"
"chmod 775 /sys/class/rfkill/rfkill0/state",
]
}, {
"name" : "post-fs-data",
"cmds" : [
"restorecon",
"restorecon /data/updater"
]
}
],
"services" : [{
"name" : "ispserver",
"path" : ["/vendor/bin/ispserver"],
"once" : 1,
"secon" : "u:r:ispserver:s0",
"uid": "ispserver",
"gid": [ "ispserver", "camera_host" ]
}
]
}
四、文件推送
当修改完成后将文件推送回去,命令如下:
hdc shell mount -o remount,rw /vendor //重新挂载设备,将设备改为可读可写
hdc file send "本地路径" "/vendor/etc/init.rkxxx.cfg" //将修改好的文件覆盖到系统当中
hdc shell reboot //将文件推送回去,系统重启