SSD_ko/lib/Cropping

1. File

Table 1-1: Introduction to files with suffix .so

Name Size(KB) Use Whether it is necessary
lib/ld-uClibc-1.0.31.so        20.9 Standard library used by toolchain YES
lib/libncurses.so.6.0          183.3 Standard library used by toolchain YES
lib/libstdc++.so.6.0.20        619.5 Standard library used by toolchain If APP does not use C++, it is not necessary
lib/libthread_db-1.0.31.so     17.1 Standard library used by toolchain NO
lib/libgcc_s.so.1              93.6 Standard library used by toolchain YES
lib/libuClibc-1.0.31.so    349.9 Standard library used by toolchain YES
lib/libatomic.so.1.1.0         13.3 Standard library used by toolchain YES
lib/libAEC_LINUX.so            65.8 Audio algorithm library: echo cancellation NO
lib/libAED_LINUX.so            112.1 Audio algorithm library: babycry, high decibel detection NO
lib/libAPC_LINUX.so            90.7 Audio algorithm library: EQ, NR, HPF, AGC If the audio function is not used, it is not necessary
lib/libBF_LINUX.so             70.9 Audio algorithm library: beamforming. NO
lib/libMD_LINUX.so             442.4 Run detection algorithm NO
lib/libOD_LINUX.so             430.4 Occlusion detection algorithm NO
lib/libSRC_LINUX.so            30.0 Audio algorithm library: re-sampling NO
lib/libSSL_LINUX.so            30.2 Audio algorithm library: sound source positioning. NO
lib/libVG_LINUX.so             69.7 Virtual fence detection algorithm NO
lib/libcam_fs_wrapper.so       5.4  The middle layer of sys module and linux API YES
lib/libcam_os_wrapper.so       33.8 The middle layer of sys module and linux API YES
lib/libcus3a.so                17.4 AF/AE/AWB interface YES
lib/libg711.so                 5.4  Audio encoding library NO
lib/libg726.so                 9.2  Audio encoding library NO
lib/libispalgo.so              225.2 Provide ISP advanced functions, such as AF/AE/AWB YES
lib/libmi_ai.so                251.2 Audio input related library If the audio function is not used, it is not necessary
lib/libmi_ao.so                82.9 Audio output related library If the audio function is not used, it is not necessary
lib/libmi_common.so            41.7 MI essential basic library YES
lib/libmi_divp.so              5.3  Interface of multimedia module and DIVP function YES
lib/libmi_iqserver.so          66.4 Communicate with iqtool, provide the function of network debugging iq, and connect with ISP module NO
lib/libmi_iqserver_pretzel.so  42.0 Communicate with iqtool, 335 and 337 are not supported NO
lib/libmi_isp.so               42.4 ISP function interface package library YES
lib/libmi_isp_pretzel.so       38.0 ISP function interface package library, 335 and 337 are not supported NO
lib/libmi_ive.so               454.6 Provide the use of hardware operators If the IVE operator and the SIGMASTAR MD/OD/VG algorithm are not used, it is not necessary
lib/libmi_ldc.so               9.4  Lens distortion correction function interface, 335 and 337 are not supported NO
lib/libmi_rgn.so               9.4  OSD function interface YES
lib/libmi_sed.so               13.3 smart encoder NO
lib/libmi_sensor.so            9.3  Interface of multimedia module and SENSOR function YES
lib/libmi_shadow.so            13.4 Provide VDF docking interface It is necessary when use SIGMASTAR MD/OD/VG algorithm
lib/libmi_sys.so               17.4 MI essential basic library, responsible for building the basic MI framework and providing buf management YES
lib/libmi_vdf.so               85.6 Provide video algorithm functions, including movement monitoring, occlusion detection, virtual fence, etc. It is necessary when use SIGMASTAR MD/OD/VG algorithm
lib/libmi_venc.so              25.4 Interface of multimedia module and VENC function, providing video decoding function YES
lib/libmi_vif.so               9.3  Interface of multimedia module and VIF function YES
lib/libmi_vpe.so               13.4 Interface of multimedia module and VPE function YES
4166KB

表1-2: Introduction to files with suffix .ko

Name Size(KB) Use Whether it is necessary
/config/modules/4.9.84/SC4238_MIPI.ko  19.9  SC4238 sensor driver NO
/config/modules/4.9.84/imx291_MIPI.ko  10.3  imx291 sensor driver NO
/config/modules/4.9.84/imx307_MIPI.ko  19.6  imx307 sensor driver NO
/config/modules/4.9.84/mhal.ko         1228.8 bottom layer implementation of multimedia layer YES
/config/modules/4.9.84/mi_ai.ko        170.1 Implementation of audio acquisition module If the audio function is not used, it is not necessary
/config/modules/4.9.84/mi_ao.ko        91.9  Implementation of audio output module If the audio function is not used, it is not necessary
/config/modules/4.9.84/mi_common.ko    9.7   Implementation of MI essential basic library YES
/config/modules/4.9.84/mi_divp.ko      52.8  Implementation of multimedia and DIVP module YES
/config/modules/4.9.84/mi_ldc.ko       7.6   Implementation of lens distortion correction,335 and 337 are not supported NO
/config/modules/4.9.84/mi_rgn.ko       92.1  Implementation of OSD module YES
/config/modules/4.9.84/mi_sensor.ko    29.6  Implementation of multimedia and sensor module YES
/config/modules/4.9.84/mi_shadow.ko    46.8  Implementation of VDF docking interface It is necessary when use SIGMASTAR MD/OD/VG algorithm
/config/modules/4.9.84/mi_sys.ko 
It needs to add specified parameters in the path where config_tool and mmap.ini are located		 414.4 Implementation of MI essential basic library, responsible for building the basic MI framework and providing buf management YES
/config/modules/4.9.84/mi_venc.ko 
It needs to add specified parameters in the path where the chagall.bin firmware is located		 165.0 多媒体 VENC模块的实现 YES
/config/modules/4.9.84/mi_vif.ko       40.7  Implementation of multimedia and VIF module YES
/config/modules/4.9.84/mi_vpe.ko       143.9 Implementation of multimedia and VPE module YES
/config/modules/4.9.84/mmc_block.ko    28.9  SD card related driver, mmc basic driver NO
/config/modules/4.9.84/mmc_core.ko     95.2  SD card related driver, mmc basic driver NO
/config/modules/4.9.84/ms_notify.ko    4.1   netlink, only needs to be loaded when running mixer NO
/config/modules/4.9.84/msdos.ko        9.8   MSDOS file system NO
/config/modules/4.9.84/nfs.ko          123.0 NFS NO
/config/modules/4.9.84/nfsv2.ko        16.9  NFS NO
/config/modules/4.9.84/nls_utf8.ko     3.6   utf8 font driver NO
/config/modules/4.9.84/ntfs.ko         87.0  NTFS file system driver NO
/config/modules/4.9.84/sc4236_MIPI.ko  12.7  SC4236 sensor driver NO
/config/modules/4.9.84/scsi_mod.ko     118.2 USB and SD card drivers NO
/config/modules/4.9.84/sd_mod.ko       30.5  SD card related driver, scsi interface disk support NO
/config/modules/4.9.84/sunrpc.ko       173.6 It is used in the RPC protocol for remote command execution and is used by NFS NO
/config/modules/4.9.84/usb-common.ko   5.5   USB basic driver NO
/config/modules/4.9.84/usb-storage.ko  68.4  USB driver (rely on usb basic driver) NO
/config/modules/4.9.84/usbcore.ko      144.3 USB host basic driver NO
/config/modules/4.9.84/cifs.ko         202.6 CIFS file system driver NO
/config/modules/4.9.84/ehci-hcd.ko     40.5  USB2.0 host controller drive NO
/config/modules/4.9.84/fat.ko          53.0  fat ile system NO
/config/modules/4.9.84/grace.ko        5.4   NFS NO
/config/modules/4.9.84/lockd.ko        49.1  Mount NFS required driver NO
/config/modules/4.9.84/kdrv_sdmmc.ko   30.7  SD card driver NO
/config/modules/4.9.84/vfat.ko         11.5  vfat file system (USB or SD card) NO

Table 1-3: Introduction to remaining files

Tools and config files Size Use Whether it is necessary
config_tool and mmap.ini When insmod mi_sys.ko, the driver calls config_tool to analyze mmap.ini hardware allocation buffer. The default directory is /config, you need to add default_config_path='/new/path' at the end of insmod mi_sys.ko when replacing YES
isp_api.xml Connect iqtool to generate software interface project. When changing the path, the application should call MI_S32 MI_IQSERVER_SetDataPath(char* path) of mi_iqserver.h before iqserver_open NO
iqfile0.bin -> imx307_iqfile.bin When the ISP starts, it will read the iq file named iqfilex.bin (x: isp channel) in /config/iqfile. The basic effect of the image is that the soft link points to the actual iq file. If you want to change the location of the file, you need to execute echo isproot /new/path> /dev/ispmid before running YES
chagall.bin HW encoder fireware. Default located in /config/fw_path/chagall.bin, add fw_path=/new/path/chagall.bin at the end of insmod mi_venc.ko when changing the lacation. YES

  1. Initial RAM filesystem and RAM disk //for ramdisk; delete it if you do not need.

  2. General:

    1. Kprobes // Add hook function (breakpoint) in kernel

    2. Kernel performance events and counters // perf 等，用于kernel hacking

  3. Network

    1. The IPv6 protocol

    2. Wireless

    3. Other parts depend on user needs

  4. Device

    1. Serial ATA and Parallel ATA drivers

    2. MMC/SD/SDIO card support

    3. Staging drivers

    4. USB host

      1. Ehci //2.0

      2. Uhci //3.0

    5. USB device

      1. UVC

      2. Webcam

    6. File systems

      1. NFS //used for debug;

      2. CIFS //used for debug

      3. JFFS2 // W/R

      4. UBIFS // W/R  

      5. FAT/NTFS //windos fs

  5. Kernel hacking

    1. Tracers //ftrace ect.

    2. KGDB: kernel debugger //gdb

    3. Debug Lockups and Hangs //debug mutex and so on.

    4. Debug Lockups and Hangs

    5. DEBUG_INFO //debug info, it is not convenient to debug after deleting

    6. KALLSYMS // kernel symbol ect., it is not convenient to debug after deleting

  6. Device Drivers

    1. Multimedia support // usb cam related setting

    2. Input device support

      1. Mouse interface

      2. Keyboards

      3. Mice

      4. Touchscreens

  7. SStar SoC platform drivers // According to the needs of users

    1. SStar SATA HOST //sata

    2. SStar SD/MMC Card Interface Support

  8. Other: It is recommended to use the user's config to check

2. Compilation And Config of BUSYBOX

2.1. Compile With Default Config

  1. prepare

    wget https://busybox.net/downloads/busybox-1.31.1.tar.bz2

    tar -xvf wget busybox-1.31.1.tar.bz2

cd busybox-1.31.1

  2. make

    make defconfig (Compile in shared library mode by default, CONFIG_STATIC -> N)

make -j4 CROSS_COMPILE=arm-none-linux-gnueabi-

2.2. BUSYBOX Cropping

Classified according to busybox main options.

Table 2-1: setting

Config Size(Bytes Function
CONFIG_DESKTOP 8k Open some non-essential configurations to be compatible with the desktop system
CONFIG_INCLUDE_SUSv2 --- Open UNIX 98 support
CONFIG_SHOW_USAGE 7k applets help
CONFIG_FEATURE_UTMP Used to record the currently logged in user, the who function will be used
CONFIG_FEATURE_PIDFILE Generated by the pid file
CONFIG_FEATURE_SUID Open root authority management
CONFIG_STACK_OPTIMIZATION_386 i386 arch stack-boundary=2
CONFIG_FLOAT_DURATION Make applets support floating point, such as sleep N.NNN
CONFIG_FEATURE_NON_POSIX_CP Non-POSIX标准cp命令

Applets

Sequence according to the display order of Applets:

The following are the configurations supported by the busybox tool, you can choose whether to enable it according to your needs:

  1. Archival Utilities

    Config of compression format and tool

  2. Coreutils

    Config of system basic tool

  3. Console Utilities

  4. Debian Utilities

  5. klibc-utils

    Including minips(ps), nuke(rm -rf) , resume and run-init

  6. Editors

    Including sed, awk, vi, ect.

  7. Finding Utilities

    Configure find, grep and xargs functions

  8. Init Utilities

    Including reboot, poweroff, halt, etc.

  9. Login/Password Management Utilities

  10. Linux Ext2 FS Progs

  11. Linux Module Utilities

    Including insmod/rmmod/modprobe, etc.

  12. Linux System Utilities

  13. Miscellaneous Utilities

  14. Networking Utilities

    Configure Ipv4/ipv6 and tftp, telnetd and other tools support

  15. Print Utilities

    Including lpd/lpr/lpq

  16. Mail Utilities

  17. Process Utilities

    Including free, kill, top, watch, ect.

  18. Runit Utilities

  19. Shells

    Including ash and hush

  20. System Logging Utilities