Conrad Pankoff 6f43f81fb4 Kernel: Implement OffsetDiskDevice to prepare for partition support ...

This implements a passthrough disk driver that translates the read/write
block addresses by a fixed offset. This could form the basis of MBR
partition support if we were to parse the MBR table at boot and create that
OffsetDiskDevice dynamically, rather than seeking to a fixed offset.

This also introduces a dependency in the form of grub. You'll need to have
32-bit grub binaries installed to build the project now.

As a bonus, divorcing Serenity from qemu's kernel loading means we can now
*technically* boot on real hardware. It just... doesn't get very far yet.
If you write the `_disk_image` file to an IDE hard drive and boot it in a
machine that supports all the basic PC hardware, it *will* start loading
the kernel.

2019-06-02 12:37:29 +02:00

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