151 lines
2.2 KiB
NASM
151 lines
2.2 KiB
NASM
;; File: kernel.asm
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format binary
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include 'const.inc'
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include 'sys/macro.inc'
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include 'sys/bootinfo.inc'
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include 'sys/cpu.inc'
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include 'sys/errno.inc'
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include 'sys/process.inc'
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org KBASE
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use32
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jmp short kmain
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;; XXX: kernel header
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;; Function: kmain
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;; Kernel entry point
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;;
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;; In:
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;;
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;; EAX - Boot Magic
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;; EBX - Boot structure address
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;;
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kmain:
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mov esp, stack_top
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cmp eax, STPDBOOT_MAGIC
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jne .error_magic
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; Copy boot structure
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mov ecx, sizeof.BootInfo
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mov esi, ebx
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mov edi, stBootInfo
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rep movsb
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; print hello world
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mov [0xC00B8000], dword 0x08740953
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mov [0xC00B8004], dword 0x05700675
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mov [0xC00B8008], dword 0x03640469
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mov [0xC00B800C], dword 0x0153024F
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mov eax, szMsgKernelAlive
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call klog
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mov eax, szMsgBuildDate
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call klog
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; clear tss
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mov ecx, sizeof.TSS
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xor ax, ax
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mov edi, kTSS
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rep movsb
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mov cx, 0xdfff
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mov eax, kTSS
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mov [eax + TSS.iomap], cx
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call gdt_set_tss
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call gdt_flush
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call tss_flush
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call mm_bootstrap
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call mm_init
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mov eax, 4
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call pmm_alloc
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mov edx, 4
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call pmm_free
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call pic_init
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call idt_setup
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mov ax, 100 ; 100Hz
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call pit_init
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;call bio_init
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;call proc_init
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;call dev_init
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;call vfs_init
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; Root inode
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; rootino = newino(dev(0.0), BLK)
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; fs_mountroot(rootino);
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;mov ah, 2
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;call bio_bread
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;xor eax, eax
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;call bio_bread
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;mov eax, SYSCALL_EXIT
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;int 0x42
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;mov al, 'X'
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;call cga_putc
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.halt:
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; hlt
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jmp $
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.error_magic:
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mov eax, szErrorBootProtocol
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.error:
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call klog
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jmp .halt
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include 'klog.inc'
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include 'queue.inc'
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include 'dev/console.inc'
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include 'dev/dev.inc'
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include 'mm/mm.inc'
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include 'lock.inc'
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include 'gdt.inc'
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include 'syscall.inc'
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include 'isr.inc'
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include 'idt.inc'
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include 'pic.inc'
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;include 'heap.inc'
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include 'vfs.inc'
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include 'fs/fat.inc'
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include 'fs/stpdfs.inc'
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include 'fs/xv6fs.inc'
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include 'proc.inc'
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include 'bio.inc'
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szMsgKernelAlive db "Kernel (", VERSION_FULL , ") is alive", 0
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szMsgBuildDate db "Built ", BUILD_DATE, 0
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szErrorBootProtocol db "Error: wrong magic number", 0
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;; Variable: stBootInfo
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;; <BootInfo>
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stBootInfo BootInfo
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kTSS TSS
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align 4096
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aProcs rb 64*sizeof.Process
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align 4096
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aBuffers rb 30*sizeof.Buffer
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align 4096
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stack_bottom:
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rb 0x4000
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stack_top:
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kend:
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