The U-Boot Documentation¶
This is the top level of the U-Boot’s documentation tree. U-Boot documentation, like the U-Boot itself, is very much a work in progress; that is especially true as we work to integrate our many scattered documents into a coherent whole. Please note that improvements to the documentation are welcome; join the U-Boot list at http://lists.denx.de if you want to help out.
The following manuals are written for users of the U-Boot - those who are trying to get it to work optimally on a given system.
The following manuals are written for developers of the U-Boot - those who want to contribute to U-Boot.
Unified Extensible Firmware (UEFI)¶
U-Boot provides an implementation of the UEFI API allowing to run UEFI compliant software like Linux, GRUB, and iPXE. Furthermore U-Boot itself can be run an UEFI payload.
The following holds information on the U-Boot device driver framework: driver-model, including the design details of itself and several driver subsystems.
- Driver Model
- Debugging driver model
- Design Details
- Ethernet Driver Guide
- Pre-relocation device tree manipulation
- File System Firmware Loader
- How to port an I2C driver to driver model
- Live Device Tree
- Migration Schedule
- Compiled-in Device Tree / Platform Data
- PCI with Driver Model
- PMIC framework based on Driver Model
- Remote Processor Framework
- How to port a serial driver to driver model
- How to port a SPI driver to driver model
- How USB works with driver model
U-Boot API documentation¶
These books get into the details of how specific U-Boot subsystems work from the point of view of a U-Boot developer. Much of the information here is taken directly from the U-Boot source, with supplemental material added as needed (or at least as we managed to add it - probably not all that is needed).
These books provide programming details about architecture-specific implementation.
These books provide details about board-specific information. They are organized in a vendor subdirectory.
These books provide information about booting the Android OS from U-Boot, manipulating Android images from U-Boot shell and discusses other Android-specific features available in U-Boot.