ghaerr/elks
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ELKS, the Embeddable Linux Kernel Subset
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This is a project to write a Linux-like operating system for ancient
computers running an Intel 8086-compatible processor.
To build ELKS, you will need a cross build chain, mainly based on DEV86, and
also on GCC-IA16 if you select that latest in place of BCC to build the kernel.
A script is provided to automatically download and build that cross chain:
'tools/build.sh'
Note: all the scripts must be executed with top folder 'elks/' as the current one.
A script that attempts to automate the whole build process and make it easier
for ELKS newbies has been provided:
'./build.sh'
If you want to clean everything up afterwards, run './build.sh clean'
and it will run 'make clean' in the build directories for you.
The general build procedure for ELKS is as follows:
* Build the cross chain in 'cross/' (see above)
* Set up your environment (PATH, TOPDIR and CROSSDIR):
'. tools/env.sh' (note the '.' before the script)
* Configure the build chain, the kernel, the commands and select the target
image format (the default configuration is for an IBM PC/XT/AT):
'make menuconfig'
* Build the kernel and the commands:
'make all'
* Build the target image as a user with the 'sudoer' privilege:
'cd elkscmd'
'make image'
The target root folder is built in 'target/', and depending on your
configuration, that folder is packed as either a floppy disk image (fd1440,
fd1680, fd1200, fd720, fd360, without MBR), a hard-disk image (hd, with MBR),
or a file image (rom, tar), into the '/image' folder.
Before writting the image on the real device, you can test it first on QEMU with
'./qemu.sh' (will configure QEMU to be close as possible to an ISA system).
Questions? Problems? Patches? Open an issue in this project! You can also join
and email the 'Linux-8086' mailing list at linux-8086@vger.kernel.org.
More information in the Documentation folder: Documentation/index.html