Difference between revisions of "Creating A devicetree.cb"
|Line 16:||Line 16:|
Revision as of 10:42, 18 February 2014
This article should help people who are writting a devicetree.cb for their system.
What you will need
- lspci -nvvv output
The mainboard's devicetree.cb file contains many build and platform configuration settings. One of the most important items is the mainboard device list.
A device needs to be listed in the mainboard devicetree.cb if it requires more setup than standard PCI initialization (resource allocation). Typically, that includes the CPU, northbridge, southbridge, and Super I/O. These devices are usually required for system specific configuration as well as indicate the system bus structure (pci_domain).
When a device in devicetree.cb is found during the coreboot PCI/system scan process the functions to do customized initialization are called via the device_operations and the chip_operations structures. You will find these structures in the devices source files.
pci, chip, device, register, on, off, end, io, irq, drq
|| This file is licensed under Creative Commons Attribution 2.5 License.|
In short: you are free to distribute and modify the file as long as you attribute its author(s) or licensor(s).