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banan-os/disk.sh

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Buildsystem: Build disk image manually We don't use grub-mkrescue anymore. Instead we build the disk image manually. This allows us to have known disk layout for easier testing when I get to implementing disk reading. For now I made the root partition ext2 since I think that will be the first format that I'll implement.
2023-02-04 23:46:11 +02:00
#!/bin/sh
set -e
. ./build.sh
DISK_NAME=banan-os.img
DISK_SIZE=$[50 * 1024 * 1024]
MOUNT_DIR=/mnt
dd if=/dev/zero of=$DISK_NAME bs=512 count=$[$DISK_SIZE / 512]
ALL: Disk image's root partition now has name 'banan-root'
2023-02-26 02:59:33 +02:00
sed -e 's/\s*\([-\+[:alnum:]]*\).*/\1/' << EOF | fdisk $DISK_NAME
Buildsystem: Build disk image manually We don't use grub-mkrescue anymore. Instead we build the disk image manually. This allows us to have known disk layout for easier testing when I get to implementing disk reading. For now I made the root partition ext2 since I think that will be the first format that I'll implement.
2023-02-04 23:46:11 +02:00
g # gpt
n # new partition
1 # partition number 1
# default (from the beginning of the disk)
+1MiB # bios boot partiton size
n # new partition
2 # partition number 2
# default (right after bios boot partition)
# default (to the end of disk)
t # set type
1 # ... of partition 1
4 # bios boot partition
t # set type
2 # ... of partition 2
20 # Linux filesystem
ALL: Disk image's root partition now has name 'banan-root'
2023-02-26 02:59:33 +02:00
x # expert menu
n # partition name
2 # ... of partition 2
banan-root
r # back to main menu
Buildsystem: Build disk image manually We don't use grub-mkrescue anymore. Instead we build the disk image manually. This allows us to have known disk layout for easier testing when I get to implementing disk reading. For now I made the root partition ext2 since I think that will be the first format that I'll implement.
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w # write changes
EOF
LOOP_DEV=$(sudo losetup -f --show $DISK_NAME)
sudo partprobe $LOOP_DEV
PARTITION1=${LOOP_DEV}p1
PARTITION2=${LOOP_DEV}p2
sudo mkfs.ext2 $PARTITION2
sudo mount $PARTITION2 $MOUNT_DIR
Kernel: Fonts can now be parsed from the filesystem and set to terminal We currently dont have a fallback font if we cannot get to filesystem initialization, but that will come later. I can't test on real hardware for this reason.
2023-02-22 22:29:31 +02:00
sudo cp -r ${SYSROOT}/* ${MOUNT_DIR}/
sudo mkdir -p ${MOUNT_DIR}/usr/share/
sudo cp -r fonts ${MOUNT_DIR}/usr/share/
Buildsystem: Build disk image manually We don't use grub-mkrescue anymore. Instead we build the disk image manually. This allows us to have known disk layout for easier testing when I get to implementing disk reading. For now I made the root partition ext2 since I think that will be the first format that I'll implement.
2023-02-04 23:46:11 +02:00
sudo grub-install --no-floppy --target=i386-pc --modules="normal ext2 multiboot" --boot-directory=${MOUNT_DIR}/boot $LOOP_DEV
echo -e '
menuentry "banan-os" {
multiboot /boot/banan-os.kernel
}
menuentry "banan-os (no serial)" {
multiboot /boot/banan-os.kernel noserial
}
menuentry "banan-os (no apic)" {
multiboot /boot/banan-os.kernel noapic
}
menuentry "banan-os (no apic, no serial)" {
multiboot /boot/banan-os.kernel noapic noserial
}
' | sudo tee ${MOUNT_DIR}/boot/grub/grub.cfg
sudo umount $MOUNT_DIR
sudo losetup -d $LOOP_DEV