# bernardotdallarosa/linuxdistro architecture

> Architecture diagram of the GitHub repository bernardotdallarosa/linuxdistro, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-09-26). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/bernardotdallarosa/linuxdistro
- Repository: https://github.com/bernardotdallarosa/linuxdistro

## Overview

Buildroot generates embedded Linux systems from a selected target architecture and package set, then exposes kernel, bootloader, and root-filesystem images. The README documents the configuration-to-build workflow; the supplied tree and excerpts are mostly selected Linux kernel code rather than Buildroot’s core orchestration, so internal build wiring is not inferred. The sampled kernel includes DMA, audio, crypto, USB storage, and SPI support, but those are runtime kernel subsystems, not a complete map of Buildroot’s package catalog.

Main entry points: [`linux-4.13.9`](https://github.com/bernardotdallarosa/linuxdistro/tree/main/linux-4.13.9) (Linux kernel), [`linux-4.13.9/sound/soc/soc-generic-dmaengine-pcm.c`](https://github.com/bernardotdallarosa/linuxdistro/blob/main/linux-4.13.9/sound/soc/soc-generic-dmaengine-pcm.c) (DMA PCM audio), [`linux-4.13.9/drivers/dma/dmaengine.c`](https://github.com/bernardotdallarosa/linuxdistro/blob/main/linux-4.13.9/drivers/dma/dmaengine.c) (DMA engine), [`board/zynqmp`](https://github.com/bernardotdallarosa/linuxdistro/tree/main/board/zynqmp) (Board configurations)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_workflow["System generation"]
  node_configuration["Target configuration"]
  node_board_configs["Board configurations"]
  node_packages["Package selection"]
  node_cross_build["Cross-compilation"]
  node_images["System images"]
end

subgraph group_kernel["Kernel runtime"]
  node_linux_kernel["Linux kernel<br/>[linux-4.13.9]"]
  node_dma_engine["DMA engine<br/>[dmaengine.c]"]
  node_audio_pcm["DMA PCM audio"]
  node_crypto_engine["Crypto engine<br/>[crypto_engine.c]"]
  node_usb_storage["USB mass storage<br/>[f_mass_storage.c]"]
  node_spi_engine["SPI controller"]
end

node_engineer(("System builder"))

node_engineer -->|"selects target"| node_configuration
node_board_configs -->|"provides defaults"| node_configuration
node_engineer -->|"selects packages"| node_packages
node_configuration -->|"configures build"| node_cross_build
node_packages -->|"selects inputs"| node_cross_build
node_cross_build -->|"produces images"| node_images
node_linux_kernel -->|"provides framework"| node_dma_engine
node_linux_kernel -->|"includes audio support"| node_audio_pcm
node_audio_pcm -->|"uses channels"| node_dma_engine

click node_board_configs "https://github.com/bernardotdallarosa/linuxdistro/tree/main/board/zynqmp"
click node_linux_kernel "https://github.com/bernardotdallarosa/linuxdistro/tree/main/linux-4.13.9"
click node_dma_engine "https://github.com/bernardotdallarosa/linuxdistro/blob/main/linux-4.13.9/drivers/dma/dmaengine.c"
click node_audio_pcm "https://github.com/bernardotdallarosa/linuxdistro/blob/main/linux-4.13.9/sound/soc/soc-generic-dmaengine-pcm.c"
click node_crypto_engine "https://github.com/bernardotdallarosa/linuxdistro/blob/main/linux-4.13.9/crypto/crypto_engine.c"
click node_usb_storage "https://github.com/bernardotdallarosa/linuxdistro/blob/main/linux-4.13.9/drivers/usb/gadget/function/f_mass_storage.c"
click node_spi_engine "https://github.com/bernardotdallarosa/linuxdistro/blob/main/linux-4.13.9/drivers/spi/spi-axi-spi-engine.c"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_configuration,node_board_configs,node_packages,node_cross_build,node_images toneBlue
class node_linux_kernel,node_dma_engine,node_audio_pcm,node_crypto_engine,node_usb_storage,node_spi_engine toneAmber
class node_engineer toneIndigo
```

## Components

### System generation

- **Target configuration**
- [Board configurations](https://github.com/bernardotdallarosa/linuxdistro/tree/main/board/zynqmp): `board/zynqmp`
- **Package selection**
- **Cross-compilation**
- **System images**

### Kernel runtime

- [Linux kernel](https://github.com/bernardotdallarosa/linuxdistro/tree/main/linux-4.13.9): `linux-4.13.9`
- [DMA engine](https://github.com/bernardotdallarosa/linuxdistro/blob/main/linux-4.13.9/drivers/dma/dmaengine.c): `linux-4.13.9/drivers/dma/dmaengine.c`
- [DMA PCM audio](https://github.com/bernardotdallarosa/linuxdistro/blob/main/linux-4.13.9/sound/soc/soc-generic-dmaengine-pcm.c): `linux-4.13.9/sound/soc/soc-generic-dmaengine-pcm.c`
- [Crypto engine](https://github.com/bernardotdallarosa/linuxdistro/blob/main/linux-4.13.9/crypto/crypto_engine.c): `linux-4.13.9/crypto/crypto_engine.c`
- [USB mass storage](https://github.com/bernardotdallarosa/linuxdistro/blob/main/linux-4.13.9/drivers/usb/gadget/function/f_mass_storage.c): `linux-4.13.9/drivers/usb/gadget/function/f_mass_storage.c`
- [SPI controller](https://github.com/bernardotdallarosa/linuxdistro/blob/main/linux-4.13.9/drivers/spi/spi-axi-spi-engine.c): `linux-4.13.9/drivers/spi/spi-axi-spi-engine.c`

### Other components

- **System builder**

## Connections

- System builder → Target configuration: selects target
- Board configurations → Target configuration: provides defaults
- System builder → Package selection: selects packages
- Target configuration → Cross-compilation: configures build
- Package selection → Cross-compilation: selects inputs
- Cross-compilation → System images: produces images
- Linux kernel → DMA engine: provides framework
- Linux kernel → DMA PCM audio: includes audio support
- DMA PCM audio → DMA engine: uses channels