Here is a list of all files with brief descriptions:

asm_int.h
armv7/boot/boot.c
x86_multiboot/boot/boot.c
armv7/MAL/boot_requirements.c
x86_multiboot/MAL/boot_requirements.c
cache.h
context.h
coproc.h
debug.c	Benchmarking and serial line output
armv7/boot/include/debug.h
x86_multiboot/boot/include/debug.h
fault.h
armv7/boot/include/fpinfo.h
x86_multiboot/boot/include/fpinfo.h
gdt.c	GDT configuration
gdt.h	Include file for GDT configuration
gdt_entrypoints_glue.c
gdt_entrypoints_glue.h
hdef.h
ial.c
ial.h	Interrupt Abstraction Layer common interface
idt.c
idt.h
irq.c
irq.h
libc.c	Pseudo-libC implementation
libc.h	Pseudo-libC header
machine.h
armv7/partitions/minimal/main.c
x86_multiboot/partitions/minimal/main.c
armv7/MAL/mal.c
x86_multiboot/MAL/mal.c
mal.h	Memory Abstraction Layer common interface
armv7/MAL/include/maldefines.h
x86_multiboot/MAL/include/maldefines.h
malinit.c
armv7/MAL/malinternal.c
x86_multiboot/MAL/malinternal.c
memlayout.h
armv7/boot/mmu.c
x86_multiboot/boot/mmu.c
armv7/boot/include/mmu.h
x86_multiboot/boot/include/mmu.h
multiboot.h	Multiboot header file
periph.c
periph.h
pic8259.h	X86 PIC 8259 defines
armv7/boot/pip_interrupt_calls.c
x86_multiboot/boot/pip_interrupt_calls.c
armv7/boot/include/pip_interrupt_calls.h
x86_multiboot/boot/include/pip_interrupt_calls.h
pipcall.h
port.c	IO-ports for x86
port.h	Include file for IO-ports operations
printf.c
printf.h
properties.c	X86 MAL properties methods
reg.h
segment_selectors.h
armv7/boot/serial.c
x86_multiboot/boot/serial.c
armv7/boot/include/serial.h
x86_multiboot/boot/include/serial.h
stdio.c
stdio.h
string.c
string.h
armv7/MAL/include/structures.h
x86_multiboot/MAL/include/structures.h
svc.c
svc.h
types.h
x86int.h	X86 interrupts include file for x86 IAL