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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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112
kernel/trunk/boot/shutdown.inc
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@ -188,12 +188,19 @@ use16
pr_mode_exit: pr_mode_exit:
mov ax,1000 ; setup stack
mov ds,ax mov ax, 3000h
mov es,ax mov ss, ax
mov fs,ax mov esp, 0EC00h
mov gs,ax ; setup ds
mov ss,ax 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 bl,[shutdown_parameter]
; mov [es:shutdown_parameter-0x10000],bl ; mov [es:shutdown_parameter-0x10000],bl
@ -208,8 +215,7 @@ rdelay:
ret ret
real_mode: real_mode:
lidt [cs:old_ints_h-0x10000] lidt [old_ints_h-0x10000]
mov sp,0xfff0
;remap IRQs ;remap IRQs
mov al,0x11 mov al,0x11
out 0x20,al out 0x20,al
@ -237,9 +243,9 @@ real_mode:
out 0xA1,al out 0xA1,al
call rdelay call rdelay
mov al,2
out 0x21,al
mov al,0 mov al,0
out 0x21,al
call rdelay
out 0xA1,al out 0xA1,al
sti sti
@ -325,40 +331,72 @@ restart_kernel:
restart_kernel_4000: restart_kernel_4000:
cli cli
mov di,0x1000 ; load kernel image from 0x8000:0 -> 0x1000:0 ; mov di,0x1000 ; load kernel image from 0x8000:0 -> 0x1000:0
;
new_kernel_block_move: ; new_kernel_block_move:
;
mov ebx,0 ; mov ebx,0
;
new_kernel_byte_move: ; new_kernel_byte_move:
;
mov ax,di ; mov ax,di
add ax,0x7000 ; add ax,0x7000
mov es,ax ; mov es,ax
mov dl,[es:bx] ; mov dl,[es:bx]
mov es,di ; mov es,di
mov [es:bx],dl ; mov [es:bx],dl
;
inc ebx ; inc ebx
cmp ebx,65536 ; cmp ebx,65536
jbe new_kernel_byte_move ; jbe new_kernel_byte_move
;
add di,0x1000 ; add di,0x1000
cmp di,0x2000 ; cmp di,0x2000
jbe new_kernel_block_move ; 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
pop cx
rep movsw
wbinvd ; write and invalidate cache wbinvd ; write and invalidate cache
mov ax,0x1000 ; mov ax,0x1000
mov es,ax ; mov es,ax
mov ax,0x3000 ; mov ax,0x3000
mov ss,ax ; mov ss,ax
mov sp,0xec00 ; 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 sti
; bootloader interface
push 0x1000
pop ds
mov si, .bootloader_block-0x10000
mov ax, 'KL'
jmp 0x1000:0000 jmp 0x1000:0000
.bootloader_block:
db 1 ; version
dw 1 ; floppy image is in memory
dd 0 ; cannot save parameters
APM_PowerOff: APM_PowerOff:
;!!!!!!!!!!!!!!!!!!!!!!!! ;!!!!!!!!!!!!!!!!!!!!!!!!