WebSVN – Kolibri OS – Diff – /kernel/trunk/boot/rdload.inc


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;;                                                              ;;
;; Copyright (C) KolibriOS team 2004-2015. All rights reserved. ;;
;; Distributed under terms of the GNU General Public License    ;;
;;                                                              ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
$Revision: 8091 $
 
 
read_ramdisk:
; READ RAMDISK IMAGE FROM HD (only for IDE0, IDE1, IDE2, IDE3)
 
        cmp     byte [BOOT.rd_load_from], RD_LOAD_FROM_HD
        jne     no_sys_on_hd.1
 
        xor     ebp, ebp
.hd_loop:
        lea     eax, [ebp+'0']
        mov     [read_image_fsinfo.name_digit], al
        movzx   eax, byte [DRIVE_DATA+2+ebp]
        test    eax, eax
        jz      .next_hd
        push    eax
        mov     esi, 1
.partition_loop:
        mov     eax, esi
        push    -'0'
@@:
        xor     edx, edx
        div     [_10]
        push    edx
        test    eax, eax
        jnz     @b
        mov     edi, read_image_fsinfo.partition
@@:
        pop     eax
        add     al, '0'
        stosb
        jnz     @b
        mov     byte [edi-1], '/'
        push    esi edi
        mov     esi, bootpath1
        mov     ecx, bootpath1.len
        rep movsb
        call    read_image
        test    eax, eax
        jz      .yes
        cmp     eax, 6
        jz      .yes
        pop     edi
        push    edi
        mov     esi, bootpath2
        mov     ecx, bootpath2.len
        rep movsb
        call    read_image
        test    eax, eax
        jz      .yes
        cmp     eax, 6
        jz      .yes
        pop     edi esi
        inc     esi
        cmp     esi, [esp]
        jbe     .partition_loop
        pop     eax
.next_hd:
        inc     ebp
        cmp     ebp, 4
        jb      .hd_loop
        jmp     no_sys_on_hd
.yes:
        DEBUGF 1, "K : RD found: %s\n", read_image_fsinfo.name
        pop     edi esi eax
 
        call    register_ramdisk
        jmp     yes_sys_on_hd
;-----------------------------------------------------------------------------
 
 
 
 
 
 
 
iglobal
align 4
read_image_fsinfo:
        dd      0               ; function: read
        dq      0               ; offset: zero
        dd      1474560         ; size
        dd      RAMDISK         ; buffer
.name   db      '/hd'
.name_digit db  '0'
        db      '/'
.partition:
        rb      64      ; should be enough for '255/KOLIBRI/KOLIBRI.IMG'
 
bootpath1       db      'KOLIBRI.IMG',0
.len = $ - bootpath1
bootpath2       db      'KOLIBRI/KOLIBRI.IMG',0
.len = $ - bootpath2
endg
 
read_image:
        mov     ebx, read_image_fsinfo
        pushad
        call    file_system_lfn_protected
        popad
        ret
 
no_sys_on_hd:
        DEBUGF 1, "K : RD not found\n"
.1:
        ; test_to_format_ram_disk (need if not using ram disk)
        cmp     byte [BOOT.rd_load_from], RD_LOAD_FROM_FORMAT
        jne     not_format_ram_disk
        ; format_ram_disk
        mov     edi, RAMDISK
        mov     ecx, 0x1080
        xor     eax, eax
@@:             
        stosd
        loop    @b
 
        mov     ecx, 0x58F7F
        mov     eax, 0xF6F6F6F6
@@:             
        stosd
        loop    @b
        
        mov     [RAMDISK+0x200], dword 0xFFFFF0         ; fat table
        mov     [RAMDISK+0x4200], dword 0xFFFFF0
        
not_format_ram_disk:
yes_sys_on_hd:

Rev 8089	Rev 8091
1	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;	1	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
2	;; ;;	2	;; ;;
3	;; Copyright (C) KolibriOS team 2004-2015. All rights reserved. ;;	3	;; Copyright (C) KolibriOS team 2004-2015. All rights reserved. ;;
4	;; Distributed under terms of the GNU General Public License ;;	4	;; Distributed under terms of the GNU General Public License ;;
5	;; ;;	5	;; ;;
6	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;	6	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
7		7
8	$Revision: 8089 $	8	$Revision: 8091 $
9		9
10		10
11	read_ramdisk:	11	read_ramdisk:
12	; READ RAMDISK IMAGE FROM HD (only for IDE0, IDE1, IDE2, IDE3)	12	; READ RAMDISK IMAGE FROM HD (only for IDE0, IDE1, IDE2, IDE3)
13		13
14	cmp byte [BOOT.rd_load_from], RD_LOAD_FROM_HD	14	cmp byte [BOOT.rd_load_from], RD_LOAD_FROM_HD
15	jne no_sys_on_hd.1	15	jne no_sys_on_hd.1
16		16
17	xor ebp, ebp	17	xor ebp, ebp
18	.hd_loop:	18	.hd_loop:
19	lea eax, [ebp+'0']	19	lea eax, [ebp+'0']
20	mov [read_image_fsinfo.name_digit], al	20	mov [read_image_fsinfo.name_digit], al
21	movzx eax, byte [DRIVE_DATA+2+ebp]	21	movzx eax, byte [DRIVE_DATA+2+ebp]
22	test eax, eax	22	test eax, eax
23	jz .next_hd	23	jz .next_hd
24	push eax	24	push eax
25	mov esi, 1	25	mov esi, 1
26	.partition_loop:	26	.partition_loop:
27	mov eax, esi	27	mov eax, esi
28	push -'0'	28	push -'0'
29	@@:	29	@@:
30	xor edx, edx	30	xor edx, edx
31	div [_10]	31	div [_10]
32	push edx	32	push edx
33	test eax, eax	33	test eax, eax
34	jnz @b	34	jnz @b
35	mov edi, read_image_fsinfo.partition	35	mov edi, read_image_fsinfo.partition
36	@@:	36	@@:
37	pop eax	37	pop eax
38	add al, '0'	38	add al, '0'
39	stosb	39	stosb
40	jnz @b	40	jnz @b
41	mov byte [edi-1], '/'	41	mov byte [edi-1], '/'
42	push esi edi	42	push esi edi
43	mov esi, bootpath1	43	mov esi, bootpath1
44	mov ecx, bootpath1.len	44	mov ecx, bootpath1.len
45	rep movsb	45	rep movsb
46	call read_image	46	call read_image
47	test eax, eax	47	test eax, eax
48	jz .yes	48	jz .yes
49	cmp eax, 6	49	cmp eax, 6
50	jz .yes	50	jz .yes
51	pop edi	51	pop edi
52	push edi	52	push edi
53	mov esi, bootpath2	53	mov esi, bootpath2
54	mov ecx, bootpath2.len	54	mov ecx, bootpath2.len
55	rep movsb	55	rep movsb
56	call read_image	56	call read_image
57	test eax, eax	57	test eax, eax
58	jz .yes	58	jz .yes
59	cmp eax, 6	59	cmp eax, 6
60	jz .yes	60	jz .yes
61	pop edi esi	61	pop edi esi
62	inc esi	62	inc esi
63	cmp esi, [esp]	63	cmp esi, [esp]
64	jbe .partition_loop	64	jbe .partition_loop
65	pop eax	65	pop eax
66	.next_hd:	66	.next_hd:
67	inc ebp	67	inc ebp
68	cmp ebp, 4	68	cmp ebp, 4
69	jb .hd_loop	69	jb .hd_loop
70	jmp no_sys_on_hd	70	jmp no_sys_on_hd
71	.yes:	71	.yes:
72	DEBUGF 1, "K : RD found: %s\n", read_image_fsinfo.name	72	DEBUGF 1, "K : RD found: %s\n", read_image_fsinfo.name
73	pop edi esi eax	73	pop edi esi eax
74		74
75	call register_ramdisk	75	call register_ramdisk
76	jmp yes_sys_on_hd	76	jmp yes_sys_on_hd
77	;-----------------------------------------------------------------------------	77	;-----------------------------------------------------------------------------
78	; Register ramdisk file system	-
79	register_ramdisk:	-
80	mov esi, boot_initramdisk	-
81	call boot_log	-
82	call ramdisk_init	-
83	ret	-
84	;-----------------------------------------------------------------------------	-
85	iglobal	78	iglobal
86	align 4	79	align 4
87	read_image_fsinfo:	80	read_image_fsinfo:
88	dd 0 ; function: read	81	dd 0 ; function: read
89	dq 0 ; offset: zero	82	dq 0 ; offset: zero
90	dd 1474560 ; size	83	dd 1474560 ; size
91	dd RAMDISK ; buffer	84	dd RAMDISK ; buffer
92	.name db '/hd'	85	.name db '/hd'
93	.name_digit db '0'	86	.name_digit db '0'
94	db '/'	87	db '/'
95	.partition:	88	.partition:
96	rb 64 ; should be enough for '255/KOLIBRI/KOLIBRI.IMG'	89	rb 64 ; should be enough for '255/KOLIBRI/KOLIBRI.IMG'
97		90
98	bootpath1 db 'KOLIBRI.IMG',0	91	bootpath1 db 'KOLIBRI.IMG',0
99	.len = $ - bootpath1	92	.len = $ - bootpath1
100	bootpath2 db 'KOLIBRI/KOLIBRI.IMG',0	93	bootpath2 db 'KOLIBRI/KOLIBRI.IMG',0
101	.len = $ - bootpath2	94	.len = $ - bootpath2
102	endg	95	endg
103		96
104	read_image:	97	read_image:
105	mov ebx, read_image_fsinfo	98	mov ebx, read_image_fsinfo
106	pushad	99	pushad
107	call file_system_lfn_protected	100	call file_system_lfn_protected
108	popad	101	popad
109	ret	102	ret
110		103
111	no_sys_on_hd:	104	no_sys_on_hd:
112	DEBUGF 1, "K : RD not found\n"	105	DEBUGF 1, "K : RD not found\n"
113	.1:	106	.1:
114	; test_to_format_ram_disk (need if not using ram disk)	107	; test_to_format_ram_disk (need if not using ram disk)
115	cmp byte [BOOT.rd_load_from], RD_LOAD_FROM_FORMAT	108	cmp byte [BOOT.rd_load_from], RD_LOAD_FROM_FORMAT
116	jne not_format_ram_disk	109	jne not_format_ram_disk
117	; format_ram_disk	110	; format_ram_disk
118	mov edi, RAMDISK	111	mov edi, RAMDISK
119	mov ecx, 0x1080	112	mov ecx, 0x1080
120	xor eax, eax	113	xor eax, eax
121	@@:	114	@@:
122	stosd	115	stosd
123	loop @b	116	loop @b
124		117
125	mov ecx, 0x58F7F	118	mov ecx, 0x58F7F
126	mov eax, 0xF6F6F6F6	119	mov eax, 0xF6F6F6F6
127	@@:	120	@@:
128	stosd	121	stosd
129	loop @b	122	loop @b
130		123
131	mov [RAMDISK+0x200], dword 0xFFFFF0 ; fat table	124	mov [RAMDISK+0x200], dword 0xFFFFF0 ; fat table
132	mov [RAMDISK+0x4200], dword 0xFFFFF0	125	mov [RAMDISK+0x4200], dword 0xFFFFF0
133		126
134	not_format_ram_disk:	127	not_format_ram_disk:
135	yes_sys_on_hd:	128	yes_sys_on_hd:

Subversion Repositories Kolibri OS

(root)/kernel/trunk/boot/rdload.inc @ 5169 – Rev 8089 → 8091