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Kernel: now bootcode loads from floppy only used sectors

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sysxtree: rewritten to 70th function, corrected scrollbar
copyr: new version for new sysxtree
@rcher, rtfread: modified to work with new sysxtree
midamp: added version modified to work with new sysxtree

git-svn-id: svn://kolibrios.org@134 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Evgeny Grechnikov (Diamond)
2006-08-24 12:33:31 +00:00
parent ec76c66cd2
commit dde2612191
34 changed files with 5228 additions and 1685 deletions
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262
kernel/branches/gfx_kernel/boot/bootcode.inc
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@@ -152,6 +152,26 @@ pagetable_set:
loop @b
ret
boot_read_floppy:
push si
xor si, si
mov ah, 2 ; read
@@:
push ax
int 0x13
pop ax
jnc @f
inc si
cmp si, 10
jb @b
mov si, badsect-0x10000
sayerr_plain:
call printplain
jmp $
@@:
pop si
ret
org $+0x10000
; table for move to extended memory (int 15h, ah=87h)
@@ -824,73 +844,195 @@ end if
xor ax, ax ; reset drive
xor dx, dx
int 0x13
mov cx,0x0001 ; startcyl,startsector
xor dx, dx ; starthead,drive
push word 80*2 ; read no of sect
reads:
pusha
xor si,si
newread:
mov bx,0xa000 ; es:bx -> data area
mov ax,0x0200+18 ; read, no of sectors to read
int 0x13
test ah, ah
jz goodread
inc si
cmp si,10
jnz newread
mov si,badsect-0x10000
sayerr_plain:
call printplain
jmp $
goodread:
; move -> 1mb
mov si,movedesc-0x10000
; now load floppy image to memory
; at first load boot sector and first FAT table
mov cx, 0x0001 ; startcyl,startsector
xor dx, dx ; starthead,drive
mov al, 1+9 ; no of sectors to read
mov bx, 0xB000 ; es:bx -> data area
call boot_read_floppy
; and copy them to extended memory
mov si, movedesc-0x10000
mov [si+8*2+3], bh
push es
push ds
pop es
mov cx,256*18
mov ah,0x87
mov cx, 256*10
mov ah, 0x87
int 0x15
pop es
test ah,ah ; was the move successfull ?
je goodmove
mov dx,0x3f2 ; floppy motor off
mov al,0
out dx,al
mov si,memmovefailed-0x10000
jmp sayerr_plain
goodmove:
add dword [movedesc-0x10000+0x18+2], 512*18
popa
inc dh
cmp dh,2
jnz bb2
mov dh,0
inc ch
pusha ; print prosentage
mov si,pros-0x10000
shr ch, 2
mov al, '5'
test ch, 1
jnz @f
mov al, '0'
test ah, ah
jz @f
sayerr_floppy:
mov dx, 0x3f2
mov al, 0
out dx, al
mov si, memmovefailed-0x10000
jmp sayerr_plain
@@:
mov [si+1], al
shr ch, 1
add ch, '0'
mov [si], ch
call printplain
popa
bb2:
pop ax
dec ax
add dword [si+8*3+2], 512*10
; copy FAT to second copy
mov byte [si+8*2+3], 0xB2
mov cx, 256*9
mov ah, 0x87
int 0x15
pop es
test ah, ah
jnz sayerr_floppy
add dword [si+8*3+2], 512*9
; calculate total number of sectors to read
mov ax, 1+9+14 ; boot+FAT+root
mov di, 0xB203
.calc_loop:
test word [es:di], 0xFFF
jz @f
inc ax
@@:
test word [es:di+1], 0xFFF0
jz @f
inc ax
@@:
add di, 3
cmp di, 0xB200+1440*3
jb .calc_loop
push ax
jnz reads
readdone:
mov bp, 1+9 ; already read sectors
; now read rest
mov byte [si+8*2+3], 0xA0
mov di, 2-14 ; absolute sector-31
mov cx, 0x0002 ; cylinder=0, sector=2
mov dx, 0x0100 ; head=1, disk=0
.read_loop:
; determine whether sector must be read
cmp di, 2
jl .read
mov bx, di
shr bx, 1
jnc .even
test word [es:bx+di+0xB200], 0xFFF0
jmp @f
.even:
test word [es:bx+di+0xB200], 0xFFF
@@:
jz .skip
.read:
mov bx, 0xA000
mov al, 1 ; 1 sector
call boot_read_floppy
inc bp
push es
push ds
pop es
pusha
mov cx, 256
mov ah, 0x87
int 0x15
test ah, ah
popa
pop es
jnz sayerr_floppy
.skip:
add dword [si+8*3+2], 512
inc cx
cmp cl, 19
jnz @f
mov cl, 1
inc dh
cmp dh, 2
jnz @f
mov dh, 0
inc ch
@@:
pop ax
push ax
pusha
; draw percentage
; total sectors: ax
; read sectors: bp
xchg ax, bp
mov cx, 100
mul cx
div bp
aam
xchg al, ah
add ax, '00'
mov si, pros-0x10000
cmp [si], ax
jz @f
mov [si], ax
call printplain
@@:
popa
inc di
cmp di, 2880-31
jnz .read_loop
; mov cx,0x0001 ; startcyl,startsector
; xor dx, dx ; starthead,drive
; push word 80*2 ; read no of sect
; reads:
; pusha
; xor si,si
; newread:
; mov bx,0xa000 ; es:bx -> data area
; mov ax,0x0200+18 ; read, no of sectors to read
; int 0x13
; test ah, ah
; jz goodread
; inc si
; cmp si,10
; jnz newread
; mov si,badsect-0x10000
;sayerr_plain:
; call printplain
; jmp $
; goodread:
; ; move -> 1mb
; mov si,movedesc-0x10000
; push es
; push ds
; pop es
; mov cx,256*18
; mov ah,0x87
; int 0x15
; pop es
;
; test ah,ah ; was the move successfull ?
; je goodmove
; mov dx,0x3f2 ; floppy motor off
; mov al,0
; out dx,al
; mov si,memmovefailed-0x10000
; jmp sayerr_plain
; goodmove:
;
; add dword [movedesc-0x10000+0x18+2], 512*18
; popa
; inc dh
; cmp dh,2
; jnz bb2
; mov dh,0
; inc ch
; pusha ; print prosentage
; mov si,pros-0x10000
; shr ch, 2
; mov al, '5'
; test ch, 1
; jnz @f
; mov al, '0'
;@@:
; mov [si+1], al
; shr ch, 1
; add ch, '0'
; mov [si], ch
; call printplain
; popa
; bb2:
; pop ax
; dec ax
; push ax
; jnz reads
; readdone:
; pop ax
mov si,backspace2-0x10000
call printplain
mov si,okt-0x10000