OpenSTLinux directory structure

Applicable for

STM32MP13x lines, STM32MP15x lines, STM32MP21x lines, STM32MP23x lines, STM32MP25x lines

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This article aims at presenting, as example, the directory structure of the Linux root file system available on STM32 board.

All files and directories are located under the root directory (/), in compliance with the File system Hierarchy Standard.

This root directory corresponds to the Linux root file system (rootfs partition), as defined in Flash partitions. Note also that the user file system (userfs partition), the boot file system (bootfs partition) and the vendor file system (vendorfs partition) can be accessed through the /usr/local mounting point, through the /boot mounting point, and through the /vendor mounting point respectively.

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The directories are shown in green, while the files are in black.

/                            Template:Highlight
├── bin                      Template:Highlight
│   └── [...]
├── boot                     Template:Highlight
├── dev                      Template:Highlight
├── etc                      Template:Highlight
├── home                     Template:Highlight
├── lib                      Template:Highlight
│   ├── modules
│   │   └── 6.6.78          Template:Highlight
│   │       ├── kernel       Template:Highlight
│   │       │   └── [...]
│   │       ├── modules.dep  Template:Highlight
│   │       └── [...]
│   └── [...]
├── lost+found
├── media                    Template:Highlight
├── mnt                      Template:Highlight
├── proc                     Template:Highlight
├── root                     Template:Highlight
├── run                      Template:Highlight
├── sbin                     Template:Highlight
├── sys                      Template:Highlight
├── tmp                      Template:Highlight
├── usr                      Template:Highlight
│   ├── bin                  Template:Highlight
│   ├── lib                  Template:Highlight
│   ├── local                Template:Highlight
│   ├── sbin                 Template:Highlight
│   ├── share                Template:Highlight
│   └── [...]
├── var                      Template:Highlight
└── vendor                   Template:Highlight

• Boot file system mounting point

/boot    Template:Highlight
├── stm32<soc>-dk[*].dtb    Template:Highlight
├── stm32<soc>-ev[*].dtb    Template:Highlight
├── [...]
├── uImage                  Template:Highlight
└── [...]

• User file system mounting point

/usr/local    Template:Highlight
├── Cube-[M4|M33]-examples    Template:Highlight
│   ├── STM32MP<soc>-DK       Template:Highlight
│   │   ├── Applications
│   │   │   ├── <Applications Name>
│   │   |   |    ├── <Application Name>                      Template:Highlight
│   │   │   |    |    ├── <script name>.sh                   Template:Highlight
│   │   │   |    |    ├── lib
│   │   │   |    |    │   └── firmware
│   │   │   |    |    │       └── <Application Name>.elf     Template:Highlight
│   │   │   |    |    └── README                             Template:Highlight
│   │   │   │    └── [...]                                   Template:Highlight
│   │   │   └── [...]                                        Template:Highlight
│   │   ├── Demonstrations
│   │   │   ├── AI_Character_Recognition                     Template:Highlight
│   │   │        └── lib
│   │   │            └── firmware
│   │   │                └── AI_Character_Recognition.elf    Template:Highlight
.   .   .
.   .   .
.   .   .

├── Linux-A7-examples    Template:Highlight
│   ├── GPIO             Template:Highlight
│   │   ├── buttons
│   │   │   ├── button_gpio_exti.sh    Template:Highlight
│   │   |   └── README.md              Template:Highlight
│   │   └── leds                       Template:Highlight
│   │       └── [...]
│   └── [...]                          Template:Highlight
├── demo                               Template:Highlight
│   └── [...]
├── lost+found
└── weston-start-at-startup
    └── start_up_demo_launcher.sh      Template:Highlight

• Vendor file system mounting point

/vendor    Template:Highlight
├── [*].so    Template:Highlight
└── [...]

Linux^® is a registered trademark of Linus Torvalds.

Artificial intelligence

General-purpose input/output (A realization of open ended transmission between devices on an embedded level. These pins available on a processor can be programmed to be used to either accept input or provide output to external devices depending on user desires and applications requirements.)