https://github.com/farlepet/lambda-kern

Multi-architecture hobby operating system created in C
https://github.com/farlepet/lambda-kern

armv7 assembly c kernel osdev raspberry-pi x86

Last synced: about 1 month ago
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Multi-architecture hobby operating system created in C

• Host: GitHub
• URL: https://github.com/farlepet/lambda-kern
• Owner: farlepet
• License: mit
• Created: 2013-12-02T03:31:02.000Z (about 11 years ago)
• Default Branch: develop
• Last Pushed: 2022-12-08T00:04:49.000Z (about 2 years ago)
• Last Synced: 2024-11-05T18:51:42.648Z (about 2 months ago)
• Topics: armv7, assembly, c, kernel, osdev, raspberry-pi, x86
• Language: C
• Homepage:
• Size: 3.98 MB
• Stars: 16
• Watchers: 3
• Forks: 0
• Open Issues: 10
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

        
Lambda Kernel

=============

Lambda OS is a hobby operating system developed by Peter Farley. Lambda OS

is designed to be portable to multiple systems, and currently supports

x86-based PCs, ARMv7 (Cortex-A9) support is in progress, and x86_64 and RISCV

(RV64I) support is planned.

**NOTE**: This repository only contains the kernel portion of Lambda OS. For a

usable implementation of the kernel, see the lambda-os repository.

Platform support:

  - x86

     - x86 PC (platform with the most support)

  - ARMv7

     - Cortex-A9

        - Versatile Express A9 (early stages; partially dropped)

     - Cortex-A53

        - Broadcom BCM2836/7 (Raspberry Pi) (early stages)

Building

--------

To be able to build the Lambda kernel, you need the following tools:

  - `gcc`

    - If using `gcc`, you must use a cross-compiler. There is a convenience script for building one: `scripts/build-cross-compiler.sh`

    - TODO: reintroduce clang support

  - `make`

  - `eu-readelf` (elfutils)

To build kernel:

  - (If fisrt time) Clone the `lambda-kern` code repository

  - (If not first time) Run `git pull`

  - Make: `make CROSS_COMPILE=`

     - Defaults to x86

     - For clang: `make CC=clang AS=clang`

     - For ARMv7: `make CROSS_COMPILE= ARCH=armv7`

        - Using clang with ARMv7 is currently not fully supported

     - To speed up compilation, add `-j` argument to the `make` command