;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;                                                              ;;
;; Copyright (C) KolibriOS team 2004-2015. All rights reserved. ;;
;; Distributed under terms of the GNU General Public License    ;;
;;                                                              ;;
;;  Shutdown for Menuet                                         ;;
;;                                                              ;;
;;  Distributed under General Public License                    ;;
;;  See file COPYING for details.                               ;;
;;  Copyright 2003 Ville Turjanmaa                              ;;
;;                                                              ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

$Revision$

use32
become_real:
        xor     ebx, ebx
        xor     edx, edx
        xor     ecx, ecx
        xor     esi, esi
        xor     edi, edi
        xor     ebp, ebp
        cli
        ltr     bx
        lgdt    [realmode_gdt-OS_BASE]
        jmp     8:@f
use16
@@:
        mov     ax, 10h
        mov     ds, ax
        mov     es, ax
        mov     fs, ax
        mov     gs, ax
        mov     ss, ax
        mov     eax, cr0
        and     eax, not 80000001h
        mov     cr0, eax
        jmp     0x1000:pr_mode_exit

pr_mode_exit:

; setup stack
        mov     ax, (TMP_STACK_TOP and 0xF0000) shr 4
        mov     ss, ax
        mov     esp, TMP_STACK_TOP and 0xFFFF

;setup ds
        push    cs
        pop     ds

        lidt    [old_ints_h]
;remap IRQs
        mov     al, 0x11
        out     0x20, al
        call    rdelay
        out     0xA0, al
        call    rdelay

        mov     al, 0x08
        out     0x21, al
        call    rdelay
        mov     al, 0x70
        out     0xA1, al
        call    rdelay

        mov     al, 0x04
        out     0x21, al
        call    rdelay
        mov     al, 0x02
        out     0xA1, al
        call    rdelay

        mov     al, 0x01
        out     0x21, al
        call    rdelay
        out     0xA1, al
        call    rdelay

        mov     al, 0xB8
        out     0x21, al
        call    rdelay
        mov     al, 0xBD
        out     0xA1, al
        sti

temp_3456:
        xor     ax, ax
        mov     es, ax
        mov     al, byte [es:0x9030]
        cmp     al, 1
        jl      nbw
        cmp     al, 4
        jle     nbw32

nbw:
        in      al, 0x60
        cmp     al, 6
        jae     nbw
        mov     bl, al
nbw2:
        in      al, 0x60
        cmp     al, bl
        je      nbw2
        cmp     al, 240;ax,240
        jne     nbw31
        mov     al, bl
        dec     ax
        jmp     nbw32
nbw31:
        add     bl, 128
        cmp     al, bl
        jne     nbw
        sub     al, 129

nbw32:

        dec     ax
        dec     ax ; 2 = power off
        jnz     no_apm_off
        call    APM_PowerOff
        jmp     $
no_apm_off:

if ~ defined extended_primary_loader ; kernel restarting is not supported
        dec     ax ; 3 = reboot
        jnz     restart_kernel     ; 4 = restart kernel
end if
        push    0x40
        pop     ds
        mov     word[0x0072], 0x1234
        jmp     0xF000:0xFFF0


rdelay:
        ret

APM_PowerOff:
        mov     ax, 5304h
        xor     bx, bx
        int     15h
;!!!!!!!!!!!!!!!!!!!!!!!!
        mov     ax, 0x5300
        xor     bx, bx
        int     0x15
        push    ax

        mov     ax, 0x5301
        xor     bx, bx
        int     0x15

        mov     ax, 0x5308
        mov     bx, 1
        mov     cx, bx
        int     0x15

        mov     ax, 0x530E
        xor     bx, bx
        pop     cx
        int     0x15

        mov     ax, 0x530D
        mov     bx, 1
        mov     cx, bx
        int     0x15

        mov     ax, 0x530F
        mov     bx, 1
        mov     cx, bx
        int     0x15

        mov     ax, 0x5307
        mov     bx, 1
        mov     cx, 3
        int     0x15
;!!!!!!!!!!!!!!!!!!!!!!!!
        ret

if ~ defined extended_primary_loader
restart_kernel:

        mov     ax, 0x0003     ; set text mode for screen
        int     0x10
        jmp     0x5000:0000

restart_kernel_5001:
        cli

        push    ds
        pop     es
        xor     si, si
        xor     di, di

        push    0x7100
        pop     ds
        mov     cx, 0x4000
        rep movsd

        push    0x8100
        pop     ds
        push    0x2000
        pop     es
        mov     cx, 0x4000
        rep movsd

        push    0x9100
        pop     ds
        push    0x3000
        pop     es
        mov     cx, 0x4000
        rep movsd
xchg bx, bx
        push    0xA100
        pop     ds
        push    0x4000
        pop     es
        mov     cx, 0x800
        rep movsd

        wbinvd  ; write and invalidate cache

        mov     al, 00110100b
        out     43h, al
        jcxz    $+2
        mov     al, 0xFF
        out     40h, al
        jcxz    $+2
        out     40h, al
        jcxz    $+2
        sti

; (hint by Black_mirror)
; We must read data from keyboard port,
; because there may be situation when previous keyboard interrupt is lost
; (due to return to real mode and IRQ reprogramming)
; and next interrupt will not be generated (as keyboard waits for handling)
        in      al, 0x60

; bootloader interface
        push    0x1000
        pop     ds
        mov     si, kernel_restart_bootblock
        mov     ax, 'KL'
        jmp     0x1000:0000
end if