81 lines
1.9 KiB
Bash
Executable File
81 lines
1.9 KiB
Bash
Executable File
#!/bin/sh
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# This script assembles the MikeOS bootloader, kernel and programs
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# with NASM, and then creates floppy and CD images (on OpenBSD)
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# Only the root user can mount the floppy disk image as a virtual
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# drive (loopback mounting), in order to copy across the files
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echo "Experimental OpenBSD build script..."
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if test "`whoami`" != "root" ; then
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echo "You must be logged in as root to build (for loopback mounting)"
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echo "Enter 'su' to switch to root"
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exit
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fi
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if [ ! -e disk_images/mikeos.flp ]
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then
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echo ">>> Creating new MikeOS floppy image..."
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dd if=/dev/zero of=disk_images/mikeos.flp bs=512 count=2880 || exit
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vnconfig vnd3 disk_images/mikeos.flp && newfs_msdos -f 1440 vnd3c && vnconfig -u vnd3 || exit
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fi
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echo ">>> Assembling bootloader..."
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nasm -O0 -w+orphan-labels -f bin -o source/bootload/bootload.bin source/bootload/bootload.asm || exit
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echo ">>> Assembling MikeOS kernel..."
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cd source
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nasm -O0 -w+orphan-labels -f bin -o kernel.bin kernel.asm || exit
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cd ..
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echo ">>> Assembling programs..."
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cd programs
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for i in *.asm
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do
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nasm -O0 -w+orphan-labels -f bin $i -o `basename $i .asm`.bin || exit
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done
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cd ..
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echo ">>> Adding bootloader to floppy image..."
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dd conv=notrunc if=source/bootload/bootload.bin of=disk_images/mikeos.flp || exit
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echo ">>> Copying MikeOS kernel and programs..."
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rm -rf tmp-loop
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vnconfig vnd3 disk_images/mikeos.flp || exit
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mkdir tmp-loop && mount -t msdos /dev/vnd3c tmp-loop && cp source/kernel.bin tmp-loop/
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cp programs/*.bin programs/*.bas programs/sample.pcx programs/vedithlp.txt programs/gen.4th programs/hello.512 tmp-loop
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echo ">>> Unmounting loopback floppy..."
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umount tmp-loop || exit
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vnconfig -u vnd3 || exit
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rm -rf tmp-loop
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echo ">>> Creating CD-ROM ISO image..."
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rm -f disk_images/mikeos.iso
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mkisofs -quiet -V 'MIKEOS' -r -J -o disk_images/mikeos.iso -b mikeos.flp disk_images/ || exit
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echo '>>> Done!'
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