                            Multiboot Kernel
                           ==================

This is a small test kernel for 32- and 64-bit code. It started as an experiment for Multiboot (see README.multiboot), but evolved around r555 (2011-09-01) into a vehicle for low level system benchmarks supporting multiple CPUs (as of 2011-09-19, r589, see README.smp).

Architecture (as of r578, 2011-09-11):


start32.asm        start64.asm      [32-bit early boot code]
           start.asm                [32-bit early boot code for both architectures]
           boot32.c                 [32-bit machine check in real-mode]
                   jump64.asm       [64 bit set-up]
           start_smp.inc            [16 bit bootstrap code into 32 bit protected mode]
...................................................................................
             main.c                 [actual kernel]
                   

start32.asm    - Multiboot/a.out start code, set-up of GDT+Interrupts for 32-bit kernel
start64.asm    - Multiboot/elf32 start code, continue in jump64.asm
start.asm      - common initialization code for both
boot32.c       - 32-bit real-mode C code for bootstrap (hardware analyzation)
jump64.asm     - set-up of GDT+Interrupts for 64-bit kernel
start_smp.inc  - bootstap code for Application processors (included in start32.asm and jump64.asm)

lib.c          - service functions for 32-bit start code and both kernels
scrn.c         - screen output for 32-bit start code and both kernels

main.c         - start routine of actual kernel in protected mode
*.c            - other helper functions and subsystems

Baremetal

Install / Use

README