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Rev 30 Rev 46
Line 186... Line 186...
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use16
 187 
use16
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 - 
 
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pr_mode_exit:
 - 
 
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 - 
 
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    mov ax,1000
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    mov ds,ax
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pr_mode_exit:
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    mov es,ax
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- 
 
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; setup stack
- 
 
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	mov	ax, 3000h
- 
 
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	mov	ss, ax
- 
 
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	mov	esp, 0EC00h
- 
 
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; setup ds
- 
 
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	push	cs
- 
 
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	pop	ds
- 
 
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;    mov ax,1000
- 
 
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;    mov ds,ax
- 
 
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;    mov es,ax
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    mov fs,ax
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;    mov fs,ax
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    mov gs,ax
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;    mov gs,ax
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    mov ss,ax
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;    mov ss,ax
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rdelay:
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rdelay:
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    ret
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    ret
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real_mode:
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real_mode:
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 - 
 
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    lidt [cs:old_ints_h-0x10000]
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    mov  sp,0xfff0
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    lidt [old_ints_h-0x10000]
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;remap IRQs
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;remap IRQs
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    mov  al,0x11
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    mov  al,0x11
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    out  0x20,al
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    out  0x20,al
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    out  0x21,al
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    out  0x21,al
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    call rdelay
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    call rdelay
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    out  0xA1,al
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    out  0xA1,al
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    call rdelay
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    call rdelay
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- 
 
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    mov  al,2
 - 
 
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    out  0x21,al
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- 
 
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    mov  al,0
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    out  0x21,al
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    mov  al,0
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    call rdelay
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    out  0xA1,al
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    out  0xA1,al
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    sti
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    sti
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restart_kernel_4000:
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restart_kernel_4000:
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        cli
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        cli
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        mov     di,0x1000      ; load kernel image from 0x8000:0 -> 0x1000:0
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;        mov     di,0x1000      ; load kernel image from 0x8000:0 -> 0x1000:0
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;
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      new_kernel_block_move:
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;      new_kernel_block_move:
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;
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        mov     ebx,0
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;        mov     ebx,0
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;
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      new_kernel_byte_move:
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;      new_kernel_byte_move:
- 
 
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;
- 
 
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;        mov     ax,di
- 
 
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;        add     ax,0x7000
- 
 
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;        mov     es,ax
- 
 
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;        mov     dl,[es:bx]
- 
 
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;        mov     es,di
- 
 
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;        mov     [es:bx],dl
- 
 
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;
- 
 
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;        inc     ebx
- 
 
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;        cmp     ebx,65536
- 
 
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;        jbe     new_kernel_byte_move
- 
 
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;
- 
 
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;        add     di,0x1000
- 
 
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;        cmp     di,0x2000
- 
 
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;        jbe     new_kernel_block_move
- 
 
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	push	ds
- 
 
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	pop	es
- 
 
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	mov	cx, 0x8000
- 
 
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	push	cx
- 
 
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	mov	ds, cx
- 
 
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	xor	si, si
- 
 
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	xor	di, di
- 
 
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	rep	movsw
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	mov	ax, 0x9000
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        mov     ax,di
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	mov	ds, ax
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        add     ax,0x7000
 366 
	mov	ax, 0x2000
338 
        mov     es,ax
 - 
 
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        mov     dl,[es:bx]
 - 
 
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        mov     es,di
 - 
 
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        mov     [es:bx],dl
 - 
 
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 - 
 
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        inc     ebx
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        cmp     ebx,65536
 - 
 
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        jbe     new_kernel_byte_move
 - 
 
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 - 
 
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        add     di,0x1000
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	mov	es, ax
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        cmp     di,0x2000
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	pop	cx
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        jbe     new_kernel_block_move
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	rep	movsw
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351 
        wbinvd  ; write and invalidate cache
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        wbinvd  ; write and invalidate cache
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- 
 
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;        mov     ax,0x1000
- 
 
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;        mov     es,ax
- 
 
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;        mov     ax,0x3000
- 
 
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;        mov     ss,ax
- 
 
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;        mov     sp,0xec00
- 
 
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; restore timer
- 
 
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	mov	al, 00110100b
- 
 
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	out	43h, al
- 
 
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	jcxz	$+2
353 
        mov     ax,0x1000
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	mov	al, 0xFF
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- 
 
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	out	40h, al
- 
 
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	jcxz	$+2
- 
 
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	out	40h, al
- 
 
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	jcxz	$+2
- 
 
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        sti
354 
        mov     es,ax
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Line -... Line 389...
- 
 
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; bootloader interface
- 
 
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	push	0x1000
- 
 
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	pop	ds
- 
 
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	mov	si, .bootloader_block-0x10000
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355 
        mov     ax,0x3000
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	mov	ax, 'KL'
356 
        mov     ss,ax
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        jmp     0x1000:0000
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        mov     sp,0xec00
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358 
        sti
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.bootloader_block: