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fixes of boot code from diamond for correct restarting from memory

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git-svn-id: svn://kolibrios.org@46 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Andrey Halyavin (halyavin) 2006-02-14 10:00:45 +00:00
parent e7afcd69e4
commit 66fd816b22
1 changed files with 75 additions and 37 deletions
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108
kernel/trunk/boot/shutdown.inc
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@ -188,12 +188,19 @@ use16
pr_mode_exit:
mov ax,1000
mov ds,ax
mov es,ax
mov fs,ax
mov gs,ax
; setup stack
mov ax, 3000h
mov ss, ax
mov esp, 0EC00h
; setup ds
push cs
pop ds
; mov ax,1000
; mov ds,ax
; mov es,ax
; mov fs,ax
; mov gs,ax
; mov ss,ax
; mov bl,[shutdown_parameter]
; mov [es:shutdown_parameter-0x10000],bl
@ -208,8 +215,7 @@ rdelay:
ret
real_mode:
lidt [cs:old_ints_h-0x10000]
mov sp,0xfff0
lidt [old_ints_h-0x10000]
;remap IRQs
mov al,0x11
out 0x20,al
@ -237,9 +243,9 @@ real_mode:
out 0xA1,al
call rdelay
mov al,2
out 0x21,al
mov al,0
out 0x21,al
call rdelay
out 0xA1,al
sti
@ -325,40 +331,72 @@ restart_kernel:
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 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
mov ax, 0x9000
mov ds, ax
mov ax, 0x2000
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
pop cx
rep movsw
wbinvd ; write and invalidate cache
mov ax,0x1000
mov es,ax
mov ax,0x3000
mov ss,ax
mov sp,0xec00
; 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:
;!!!!!!!!!!!!!!!!!!!!!!!!