Sparrow is an embedded operating system.

Now it supports S3C6410X chipset (ARM architecture) only, and run in Skyeye simulator.

The name "Sparrow" comes from a famous Chinese proverb - "Sparrow may be small but perfectly formed". I hope it has every important features of modern system, but not too complex.

To share the knowledge how an operating system is created, I compiled some document. But usually design document is always boring, so I made as many diagrams as possible to illustrate the most important mechanism. Hope the cartoon-style document let the readers feel relaxed. These slides are also available in doc folder of the repository.

The author, I, am a software engineer working in Ericsson. If you need to contact me, please send mail to michael2012zhao@gmail.com

Document:

• Chapter 01: Introduction
• Chapter 02: User Guide
• Chapter 02: User Guide (Demo)
• Chapter 03: Process
• Chapter 04: Memory Management
• Chapter 05: Boot Memory Allocator
• Chapter 06: Page Memory Allocator
• Chapter 07: Slab Memory Allocator
• Chapter 08: User Space
• Chapter 09: File System
• Chapter 10: Interrupt Handling
• Chapter 11: Tracing
• Chapter 12: Programming Guide