RGBCube/serenity
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3 commits

Author SHA1 Message Date
Gunnar Beutner
69fd68b1c8 Prekernel: Make sure we're not overwriting the ELF header 
This copies the ELF header because we might end up overwriting when
loading the ELF sections.
 2021-07-20 01:50:55 +02:00
Gunnar Beutner
3678f78bfb Prekernel: Make sure the last few bytes of the kernel image are mapped 
Depending on the exact layout of the .ksyms section the kernel would
fail to boot because the kernel_load_end variable didn't account for the
section's size.
 2021-07-19 17:47:54 +02:00
Gunnar Beutner
7e94b090fe Kernel: Introduce basic pre-kernel environment 
This implements a simple bootloader that is capable of loading ELF64
kernel images. It does this by using QEMU/GRUB to load the kernel image
from disk and pass it to our bootloader as a Multiboot module.

The bootloader then parses the ELF image and sets it up appropriately.
The kernel's entry point is a C++ function with architecture-native
code.

Co-authored-by: Liav A <liavalb@gmail.com>
 2021-07-18 17:31:13 +02:00