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https://github.com/bahmanm/ifem-os
Aspiring to become an operating system...
https://github.com/bahmanm/ifem-os
assembly-language c exokernel i386 microkernel operating-systems
Last synced: about 1 month ago
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Aspiring to become an operating system...
- Host: GitHub
- URL: https://github.com/bahmanm/ifem-os
- Owner: bahmanm
- License: gpl-2.0
- Created: 2011-07-25T07:14:46.000Z (over 13 years ago)
- Default Branch: master
- Last Pushed: 2019-05-23T11:13:12.000Z (over 5 years ago)
- Last Synced: 2024-05-02T06:09:12.779Z (8 months ago)
- Topics: assembly-language, c, exokernel, i386, microkernel, operating-systems
- Language: C
- Homepage:
- Size: 75.2 KB
- Stars: 9
- Watchers: 3
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# IFEM OS
Aspiring to be *an operating system designed from the ground up for embedded/industrial
applications with an emphasis on fault-tolerance.* :-)
# Introduction
IFEM is an **experimental, work-in-progress, immature and early-stage**
operating system - you've been warned :-)
The idea behind IFEM is having an operating system where
- kernel is a minimal and thin piece of functionality
- modules and drivers don't know anything about each other beyond APIs and
SPIs
- and there are no dependencies during compile and link time - instead pieces
fit together only at run-time.
# Current Status
Version 0.0.1 is the first release where "something works":
- bootloader loads the OS from the disk (image) into memory and hands the
control over to kernel.
- kernel
* does basic hardware init routine
* enables the protected mode
* sets up two interrupt handlers (timer and keyboard)
- interrupt handlers print the key-code on each keyboard interrupt and
announce a message every 200 timer ticks.
Here's a recording of its execution:
# How To Build
### Using Gnu toolchain on a Linux box
Provided you have installed `gcc` (5+) and `gcc-multilib` (if on a x64 machine):
```
make clean all
```
### No Gnu toolchain
Provided you have docker already installed:
```
$ docker run --rm -v $(pwd):/src -w /src -it gcc:9
# make clean all
```
# How To Run
IFEM's "runnable" binary is `ifem-os.img` which you can find in the root of the
source tree after a successful build.
### [Bochs](http://bochs.sourceforge.net/)
There's a `bochsrc` file included in the source tree - provided you fix the paths
in that file to match your own Bochs installation, simply run bochs while inside
the source tree.
### Virtualbox
If you intend to run IFEM inside a vbox machine, you just need to boot your
vm from `ifem-os.img` as a floppy disk image.
### Physical machine
If you still have access to a machine with floppy drive, just write IFEM's
binary to the floppy (e.g. `dd`) and boot your machine!