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: 18 days ago
JSON representation
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 (over 11 years ago)
- Default Branch: develop
- Last Pushed: 2022-12-08T00:04:49.000Z (over 2 years ago)
- Last Synced: 2024-11-05T18:51:42.648Z (7 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)
- `menuconfig` or similar, for easy configuration
- Not required, `.config` file can be modified by hand
- If no `.config` file is present, `.defconfig` is used instead
- For a standalone Kconfig-compatible `menuconfig`, see [Kconfiglib](https://github.com/ulfalizer/Kconfiglib)
To build kernel:
- (If fisrt time) Clone the `lambda-kern` code repository
- (If not first time) Run `git pull`
- If you wish to make changes to the configuration: `menuconfig` (or similar)
- Default config targets x86
- Make: `make CROSS_COMPILE=`
- `CROSS_COMPILE` is not necessary when using Clang
- Clang can be enabled via CONFIG_BUILD_USE_CLANG in the config
- Using clang with ARM is currently not fully supported
- To speed up compilation, add `-j` argument to the `make` command