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;;

;;  Shutdown for Menuet

;;

;;  Distributed under General Public License

;;  See file COPYING for details.

;;  Copyright 2003 Ville Turjanmaa

;;

system_shutdown:          ; shut down the system

    push 3		; stop playing cd

    pop  eax

    call sys_cd_audio

    cld

    mov  al,[0x2f0000+0x9030]

    cmp  al,1

    jl   no_shutdown_parameter

    cmp  al,4

    jle  yes_shutdown_param

 no_shutdown_parameter:

;    movzx ecx,word [0x2f0000+0x900A]

;    movzx esi,word [0x2f0000+0x900C]

;    imul ecx,esi  ;[0xfe04]

;;    mov  ecx,0x500000/4  ;3fff00/4    ; darken screen

;    push ecx

;    mov  esi,[0xfe80]

;    cmp  esi,32*0x100000

;    jbe  no_darken_screen

;    mov  edi,16*0x100000

;    push esi edi

;  sdnewpix:

;    lodsd

;    shr  eax,1

;    and  eax,0x7f7f7f7f

;    stosd

;    loop sdnewpix

;    pop  ecx

;    pop  esi edi

;    rep  movsd

;  no_darken_screen:

; read shutdown code:

; 1) display shutdown "window"

    mov  eax,[0xfe00]

    shr  eax,1

    lea  esi,[eax+220]		; x end

    sub  eax,220		; x start

    mov  ebx,[0xfe04]

    shr  ebx,1

    mov  [shutdownpos],ebx

    lea  ebp,[ebx+105]		; y end

    sub  ebx,120		; y start

    xor  edi,edi

    inc  edi		; force putpixel & dtext

    mov  ecx,0x0000ff

; vertical loop begin

  sdnewpix1:

    push eax	; save x start

; horizontal loop begin

  sdnewpix2:

    call [putpixel]

    inc  eax

    cmp  eax,esi

    jnz  sdnewpix2

; horizontal loop end

    dec  ecx	; color

    pop  eax	; restore x start

    inc  ebx	; advance y pos

    cmp  ebx,ebp

    jnz  sdnewpix1

; vertical loop end

; 2) display text strings

;    a) version

    mov  eax,[0xfe00]

    shr  eax,1

    shl  eax,16

    mov  ax,word [shutdownpos]

    push eax

    sub  eax,(220-27)*10000h + 105

    mov  ebx,0xffff00

    mov  ecx,version

    push 34

    pop  edx

    call dtext

;    b) variants

    add  eax,105+33

    push 6

    pop  esi

;    mov  ebx,0xffffff

    mov  bl,0xFF

    mov  ecx,shutdowntext

    mov  dl,40

  newsdt:

    call dtext

    add  eax,10

    add  ecx,edx

    dec  esi

    jnz  newsdt

; 3) load & display rose.txt

    mov  eax,rosef          ; load rose.txt

    xor  ebx,ebx

    push 2

    pop  ecx

    mov  edx,0x90000

    push edx

    push 12

    pop  esi

    push edi	; may be destroyed

    call fileread

    pop  edi

    pop  ecx

    inc  ecx	; do not display stars from rose.txt

    pop  eax

    add  eax,20*10000h - 110

    mov  ebx,0x00ff00

    push 27

    pop  edx

   nrl:

    call dtext

    sub  ebx,0x050000

    add  eax,8

    add  ecx,31

    cmp  cx,word 0x0001+25*31

    jnz  nrl

    call checkEgaCga

 yes_shutdown_param:

    cli

    mov  eax,kernel               ; load kernel.mnt to 0x8000:0

    push 12

    pop  esi

    xor  ebx,ebx

    or   ecx,-1

    mov  edx,0x80000

    call fileread

    mov  esi,restart_kernel_4000  ; move kernel re-starter to 0x4000:0

    mov  edi,0x40000

    mov  ecx,1000

    rep  movsb

    mov  eax,0x2F0000    ; restore 0x0 - 0xffff

    xor  ebx,ebx

    mov  ecx,0x10000

    call memmove

    call restorefatchain

    mov  word [0x467+0],pr_mode_exit-0x10000

    mov  word [0x467+2],0x1000

    mov  al,0x0F

    out  0x70,al

    mov  al,0x05

    out  0x71,al

    mov  al,0xFE

    out  0x64,al

    hlt

use16

pr_mode_exit:

; setup stack

	mov	ax, 3000h

	mov	ss, ax

	mov	esp, 0EC00h

; setup ds

	push	cs

	pop	ds

    lidt [old_ints_h-0x10000]

;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,0

    out  0x21,al

    call rdelay

    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

    call pause_key

    cmp  al,6

    jae  nbw

    mov  bl,al

  nbw2:

    in   al,0x60

    call pause_key

    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	; 1 = write floppy

    js   nbw

    jnz  no_floppy_write

    call floppy_write

    jmp  temp_3456 ;nbw

  no_floppy_write:

    dec  ax	; 2 = power off

    jnz  no_apm_off

    call APM_PowerOff

    jmp  $

  no_apm_off:

    dec  ax	; 3 = reboot

    jnz  restart_kernel		; 4 = restart kernel

    push 0x40

    pop  ds

    mov  word[0x0072],0x1234

    jmp  0xF000:0xFFF0

    pause_key:

      mov cx,100

    pause_key_1:

      loop  pause_key_1

      ret

old_ints_h:

        dw      0x400

        dd      0

        dw      0

rdelay:

    ret

iglobal

  kernel  db  'KERNEL  MNT'

;  shutdown_parameter db 0

endg

restart_kernel:

        mov     ax,0x0003      ; set text mode for screen

        int     0x10

        jmp     0x4000:0000

restart_kernel_4000:

        cli

;        mov     di,0x1000      ; load kernel image from 0x8000:0 -> 0x1000:0

;

;      new_kernel_block_move:

;

;        mov     ebx,0

;

;      new_kernel_byte_move:

;

;        mov     ax,di

;        add     ax,0x7000

;        mov     es,ax

;        mov     dl,[es:bx]

;        mov     es,di

;        mov     [es:bx],dl

;

;        inc     ebx

;        cmp     ebx,65536

;        jbe     new_kernel_byte_move

;

;        add     di,0x1000

;        cmp     di,0x2000

;        jbe     new_kernel_block_move

	push	ds

	pop	es

	mov	cx, 0x8000

	push	cx

	mov	ds, cx

	xor	si, si

	xor	di, di

	rep	movsw

	push	0x9000

	pop	ds

	push	0x2000

	pop	es

	pop	cx

	rep	movsw

        wbinvd  ; write and invalidate cache

;        mov     ax,0x1000

;        mov     es,ax

;        mov     ax,0x3000

;        mov     ss,ax

;        mov     sp,0xec00

; restore timer

	mov	al, 00110100b

	out	43h, al

	jcxz	$+2

	mov	al, 0xFF

	out	40h, al

	jcxz	$+2

	out	40h, al

	jcxz	$+2

        sti

; bootloader interface

	push	0x1000

	pop	ds

	mov	si, .bootloader_block-0x10000

	mov	ax, 'KL'

        jmp     0x1000:0000

.bootloader_block:

	db	1	; version

	dw	1	; floppy image is in memory

	dd	0	; cannot save parameters

APM_PowerOff:

;!!!!!!!!!!!!!!!!!!!!!!!!

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

;!!!!!!!!!!!!!!!!!!!!!!!!

fwwritedone:

        ret

flm db 0

floppy_write:   ; write diskette image to physical floppy

        cmp  [flm-0x10000],byte 1

        je   fwwritedone

        mov  [flm-0x10000],byte 1

	xor	ax, ax		; reset drive

	xor	dx, dx

        int     0x13

        mov     cx,0x0001               ; startcyl,startsector

;        mov     dx,0x0000               ; starthead,drive

	xor	dx, dx

        mov	ax, 80*2               ; read no of sect

      fwwrites:

	push	ax

        ; move 1mb+ -> 0:a000

	pusha

        mov     si,fwmovedesc -0x10000

        mov     cx,256*18

        mov     ah,0x87

        push	ds

        pop	es

        int     0x15

        add	dword [fwmovedesc-0x10000+0x12], 512*18

        popa

        xor     si,si

        mov	es,si

      fwnewwrite:

        mov     bx,0xa000               ; es:bx -> data area

        mov     ax,0x0300+18            ; read, no of sectors to read

        int     0x13

	test	ah, ah

        jz      fwgoodwrite

	inc	si

        cmp     si,10

        jnz     fwnewwrite

; can't access diskette - return

	pop	ax

        ret

      fwgoodwrite:

        inc     dh

        cmp     dh,2

        jnz     fwbb2

        mov     dh,0

        inc     ch

      fwbb2:

        pop     ax

        dec     ax

        jnz     fwwrites

        ret

      fwmovedesc:

        db      0x00,0x00,0x0,0x00,0x00,0x00,0x0,0x0

        db      0x00,0x00,0x0,0x00,0x00,0x00,0x0,0x0

        db      0xff,0xff,0x0,0x00,0x10,0x93,0x0,0x0

        db      0xff,0xff,0x0,0xa0,0x00,0x93,0x0,0x0

        db      0x00,0x00,0x0,0x00,0x00,0x00,0x0,0x0

        db      0x00,0x00,0x0,0x00,0x00,0x00,0x0,0x0

        db      0x00,0x00,0x0,0x00,0x00,0x00,0x0,0x0

        db      0x00,0x00,0x0,0x00,0x00,0x00,0x0,0x0

use32

uglobal

  shutdownpos dd 0x0

endg

iglobal

if lang eq en

shutdowntext:

    db   "IT'S SAFE TO POWER OFF COMPUTER OR      "

    db   '                                        '

    db   '1) SAVE RAMDISK TO FLOPPY               '

    db   '2) APM - POWEROFF                       '

    db   '3) REBOOT                               '

    db   '4) RESTART KERNEL                       '

else

shutdowntext:

    db   "������᭮� �몫�祭�� �������� ���    "

    db   '                                        '

    db   '1) ���࠭��� ࠬ��� �� ��᪥��         '

    db   '2) APM - �몫�祭�� ��⠭��             '

    db   '3) ��१���㧪� ��⥬�                 '

    db   '4) ������ �� �� ���                  '

end if

rosef:

    db 'ROSE    TXT'

endg