Successfully able to create a disk-image file
- Created a scripts folder - Written instructions on how to create the disk image - Working on a python build script that executes all other scripts The scripts folder should contain scripts to build a full installation of our operating system. Scripts like creating a filesystem should be found here
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3
Makefile
3
Makefile
@ -60,6 +60,9 @@ test:
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test_iso:
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$(EMULATOR) -boot d -cdrom $(BUILD_DIR)/barinkOS.iso -serial stdio -vga std -display gtk -m 2G -cpu core2duo
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test_disk:
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$(EMULATOR) -boot d -drive format=raw,file=disk.img -serial stdio -vga std -display gtk -m 2G -cpu core2duo
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build_kernel: $(OBJ_LINK_LIST)
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$(CC) -T $(SRC_DIR)/kernel/linker.ld -o $(BUILD_DIR)/myos.bin \
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25
scripts/build.py
Executable file
25
scripts/build.py
Executable file
@ -0,0 +1,25 @@
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#!/usr/bin/python3
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import os
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import subprocess
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print("Building BarinkOS")
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# list and run build scripts
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print("Running build-scripts")
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os.chdir("scripts")
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scripts=os.listdir()
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currentScript=os.path.basename(__file__)
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if currentScript in scripts:
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scripts.remove(currentScript)
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for script in scripts:
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print(os.getcwd())
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print("Running:" + script)
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subprocess.call(script, cwd=os.getcwd())
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os.chdir("..")
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64
scripts/create-filesystem.sh
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64
scripts/create-filesystem.sh
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@ -0,0 +1,64 @@
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#!/bin/bash
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#
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# How to build a boot image
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# NOTE: This script cant run properly yet
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# Things described here should be done manually for now
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#
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# COPYRIGHT © Nigel Barink 2023
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#
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echo "Building a FAT16 filesystem"
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su
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# dd if=/dev/zero of=diks.img bs=512 count=131072
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# fdisk disk.img
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# Use the following options in fdisk (Format Disk Tool)
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# We want to create a MBR (NOT GPT) Partition table containing 1 logical disk
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# with a primary FAT16 partition marked bootable
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#OPTIONs
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# Create new DOS disklabel
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# o
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# Create new partition
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# n
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# Choose Primary as partition type
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# p
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# hit enter to choose default for the other options
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# Mark partition 1 as bootable
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# a
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# Change partition type to FAT16
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# t
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# Choose Partition 1
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# 1
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# Choose HEX 6 for FAT16
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# 6
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# Sync and write changes to disk
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# w
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# Create a "block" device from the disk.img
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# losetup /dev/loop9 disk.img
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# Format the partition on the disk as FAT16
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# mkdosfs -F16 /dev/loop9
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# Mount the disk to a folder on our dev machine
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# mount /dev/loop9 /mnt
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# Install the grub bootloader onto the disk
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# grub-install --no-floppy --modules="normal multiboot" /dev/loop9 --target=i386-pc --boot-directory=/mnt/boot --force
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# copy the necessary OS files
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# cp root/boot/myos.bin /mnt/boot/myos.bin
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# cp root/boot/grub/grub.cfg /mnt/boot/grub/grub.cfg
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# Unmount the device
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# umount /mnt
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# Destroy the loop device
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# losetup -d /dev/loop9
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5
scripts/test.sh
Executable file
5
scripts/test.sh
Executable file
@ -0,0 +1,5 @@
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#!/bin/bash
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start=`date +%s`
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end=`date +%s`
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echo That took $((end-start)) seconds
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date +"%c" -d195440409
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