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Rev | Author | Line No. | Line |
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2288 | clevermous | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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5363 | yogev_ezra | 3 | ;; Copyright (C) KolibriOS team 2004-2015. All rights reserved. ;; |
2288 | clevermous | 4 | ;; Copyright (C) MenuetOS 2000-2004 Ville Mikael Turjanmaa ;; |
5 | ;; Distributed under terms of the GNU General Public License ;; |
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6 | ;; ;; |
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7 | ;; BOOTCODE.INC ;; |
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8 | ;; ;; |
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9 | ;; KolibriOS 16-bit loader, ;; |
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10 | ;; based on bootcode for MenuetOS ;; |
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11 | ;; ;; |
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12 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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13 | |||
14 | $Revision: 9942 $ |
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15 | |||
16 | |||
17 | ;========================================================================== |
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18 | ; |
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19 | ; 16 BIT FUNCTIONS |
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20 | ; |
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21 | ;========================================================================== |
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22 | |||
23 | |||
24 | putchar: |
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25 | ; in: al=character |
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26 | mov ah, 0Eh |
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27 | mov bh, 0 |
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28 | int 10h |
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29 | ret |
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30 | |||
31 | print: |
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32 | ; in: si->string |
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33 | mov al, 186 |
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34 | call putchar |
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35 | mov al, ' ' |
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36 | call putchar |
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37 | |||
38 | printplain: |
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39 | ; in: si->string |
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40 | pusha |
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41 | lodsb |
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42 | @@: |
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43 | call putchar |
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44 | lodsb |
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45 | test al, al |
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46 | jnz @b |
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47 | popa |
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48 | ret |
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49 | |||
3796 | yogev_ezra | 50 | getkey: ; Use BIOS INT 16h to read a key from the keyboard |
2288 | clevermous | 51 | ; get number in range [bl,bh] (bl,bh in ['0'..'9']) |
52 | ; in: bx=range |
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53 | ; out: ax=digit (1..9, 10 for 0) |
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3989 | yogev_ezra | 54 | mov ah, 0 ; If 'int 16h' is called with 'ah' equal to zero, the BIOS will not return control to the caller |
55 | int 16h ; until a key is available in the system type ahead buffer. On return, 'al' contains the ASCII |
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56 | cmp al, 27 ; code for the key read from the buffer and 'ah' contains the keyboard scan code. (27=>ESC) |
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57 | jz @f ; If ESC is pressed, return (user doesn't want to change any value). |
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58 | cmp al, bl ; Compare 'al' (ASCII code of key pressed) with 'bl' (lowest accepted char from the range). |
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59 | jb getkey ; ASCII code is below lowest accepted value => continue waiting for another key. |
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60 | cmp al, bh ; Compare 'al' (ASCII code of key pressed) with 'bh' (highest accepted char from the range). |
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61 | ja getkey ; ASCII code is above highest accepted value => continue waiting for another key. |
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62 | push ax ; If the pressed key is in the accepted range, save it on the stack and echo to screen. |
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2288 | clevermous | 63 | call putchar |
64 | pop ax |
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3989 | yogev_ezra | 65 | and ax, 0Fh ; Convert ASCII code to number: '1'->1, '2'->2, etc. 0Fh=1111b. |
66 | jnz @f ; ASCII code for '0' is 48 (110000b). (110000b AND 1111b) = 0 |
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67 | mov al, 10 ; So if key '0' was entered, return 10 in 'ax' |
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2288 | clevermous | 68 | @@: |
69 | ret |
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70 | |||
71 | setcursor: |
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72 | ; in: dl=column, dh=row |
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73 | mov ah, 2 |
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74 | mov bh, 0 |
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75 | int 10h |
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76 | ret |
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77 | |||
78 | macro _setcursor row,column |
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79 | { |
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80 | mov dx, row*256 + column |
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81 | call setcursor |
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82 | } |
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83 | |||
3989 | yogev_ezra | 84 | macro _ask_question question,range,variable_to_set |
85 | { |
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86 | _setcursor 16,0 |
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87 | mov si, question ; Print the question |
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88 | call print |
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89 | mov bx, range ; range accepted for answer |
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90 | call getkey |
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91 | cmp al, 27 ; If ESC was pressed, do not change the value |
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92 | jz .esc_pressed |
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93 | mov [variable_to_set], al |
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94 | } |
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95 | |||
9942 | turbocat | 96 | clear_status_field: |
97 | mov si, space_msg |
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98 | mov byte [si+80], 0 |
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99 | _setcursor 16,0 |
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100 | call printplain |
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101 | _setcursor 16,0 |
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102 | ret |
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103 | |||
2288 | clevermous | 104 | boot_read_floppy: |
105 | push si |
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106 | xor si, si |
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107 | mov ah, 2 ; read |
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108 | @@: |
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109 | push ax |
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110 | int 0x13 |
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111 | pop ax |
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112 | jnc @f |
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113 | inc si |
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114 | cmp si, 10 |
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115 | jb @b |
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116 | sayerr_badsect: |
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117 | mov si, badsect |
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118 | sayerr_plain: |
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119 | call printplain |
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120 | jmp $ |
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121 | @@: |
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122 | pop si |
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123 | ret |
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124 | |||
125 | ; convert abs. sector number (AX) to BIOS T:H:S |
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126 | ; sector number = (abs.sector%BPB_SecPerTrk)+1 |
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127 | ; pre.track number = (abs.sector/BPB_SecPerTrk) |
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128 | ; head number = pre.track number%BPB_NumHeads |
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129 | ; track number = pre.track number/BPB_NumHeads |
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130 | ; Return: cl - sector number |
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131 | ; ch - track number |
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132 | ; dl - drive number (0 = a:) |
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133 | ; dh - head number |
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134 | conv_abs_to_THS: |
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135 | push bx |
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136 | mov bx, word [BPB_SecPerTrk] |
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137 | xor dx, dx |
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138 | div bx |
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139 | inc dx |
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140 | mov cl, dl ; cl = sector number |
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141 | mov bx, word [BPB_NumHeads] |
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142 | xor dx, dx |
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143 | div bx |
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144 | ; !!!!!!! ax = track number, dx = head number |
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145 | mov ch, al ; ch=track number |
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146 | xchg dh, dl ; dh=head number |
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147 | mov dl, 0 ; dl=0 (drive 0 (a:)) |
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148 | pop bx |
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149 | retn |
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150 | ; needed variables |
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151 | BPB_SecPerTrk dw 0 ; sectors per track |
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152 | BPB_NumHeads dw 0 ; number of heads |
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153 | BPB_FATSz16 dw 0 ; size of FAT |
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154 | BPB_RootEntCnt dw 0 ; count of root dir. entries |
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155 | BPB_BytsPerSec dw 0 ; bytes per sector |
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156 | BPB_RsvdSecCnt dw 0 ; number of reserved sectors |
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157 | BPB_TotSec16 dw 0 ; count of the sectors on the volume |
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158 | BPB_SecPerClus db 0 ; number of sectors per cluster |
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159 | BPB_NumFATs db 0 ; number of FAT tables |
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160 | abs_sector_adj dw 0 ; adjustment to make abs. sector number |
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161 | end_of_FAT dw 0 ; end of FAT table |
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162 | FirstDataSector dw 0 ; begin of data |
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163 | |||
164 | ;========================================================================= |
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165 | ; |
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166 | ; 16 BIT CODE |
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167 | ; |
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168 | ;========================================================================= |
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169 | |||
5786 | serge | 170 | include 'bootvesa.inc' ;Include source for boot vesa |
2288 | clevermous | 171 | if defined extended_primary_loader |
172 | include 'parsers.inc' |
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173 | end if |
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174 | |||
175 | start_of_code: |
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176 | |||
177 | if defined extended_primary_loader |
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178 | ; save data from primary loader |
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179 | mov word [cs:bootcallback], si |
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180 | mov word [cs:bootcallback+2], ds |
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181 | push cs |
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182 | pop ds |
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183 | mov [bootdevice], ax |
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184 | mov [bootfs], bx |
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185 | |||
186 | ; set up stack |
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5790 | serge | 187 | mov ax, (TMP_STACK_TOP and 0xF0000) shr 4 |
2288 | clevermous | 188 | mov ss, ax |
5786 | serge | 189 | mov sp, TMP_STACK_TOP and 0xFFFF |
2288 | clevermous | 190 | |
191 | ; try to load configuration file |
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192 | mov ax, 1 |
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193 | mov di, config_file_struct |
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194 | call [bootcallback] |
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195 | cld |
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196 | push cs |
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197 | pop es |
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198 | ; bx=0 - ok, bx=1 - part of file loaded, assume this is ok |
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199 | cmp bx, 1 |
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200 | ja .config_bad |
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201 | ; configuration file was loaded, parse |
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202 | ; if length is too big, use first 0FFFFh bytes |
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203 | test dx, dx |
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204 | jz @f |
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205 | mov ax, 0FFFFh |
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206 | @@: |
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207 | ; ds:si will be pointer to current data, dx = limit |
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208 | xchg ax, dx |
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209 | push 4000h |
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210 | pop ds |
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211 | xor si, si |
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212 | .parse_loop: |
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213 | ; skip spaces |
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214 | cmp si, dx |
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215 | jae .parse_done |
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216 | lodsb |
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217 | cmp al, ' ' |
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218 | jbe .parse_loop |
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219 | dec si |
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220 | ; loop over all possible configuration values |
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221 | mov bx, config_file_variables |
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222 | .find_variant: |
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223 | ; get length |
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224 | mov cx, [es:bx] |
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225 | ; zero length = end of list |
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226 | jecxz .find_newline |
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227 | ; skip over length |
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228 | inc bx |
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229 | inc bx |
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230 | mov di, bx |
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231 | ; skip over string |
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232 | add bx, cx |
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233 | ; test whether we have at least cx symbols left |
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234 | mov ax, cx |
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235 | add ax, si |
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236 | jc .next_variant1 |
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237 | cmp ax, dx |
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238 | jae .next_variant1 |
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239 | ; save current position |
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240 | push si |
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241 | ; compare strings |
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242 | repz cmpsb |
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243 | jnz .next_variant2 |
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244 | ; strings are equal; look for "=" with possible spaces before and after |
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245 | @@: |
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246 | cmp si, dx |
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247 | jae .next_variant2 |
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248 | lodsb |
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249 | cmp al, ' ' |
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250 | jbe @b |
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251 | cmp al, '=' |
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252 | jnz .next_variant2 |
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253 | ; ok, we found the true variant |
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254 | ; ignore saved position on the stack |
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255 | pop ax |
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256 | ; call the parser |
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257 | call word [es:bx] |
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258 | ; line parsed, find next |
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259 | .find_newline: |
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260 | cmp si, dx |
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261 | jae .parse_done |
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262 | lodsb |
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263 | cmp al, 13 |
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264 | jz .parse_loop |
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265 | cmp al, 10 |
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266 | jz .parse_loop |
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267 | jmp .find_newline |
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268 | .next_variant2: |
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269 | ; continue to the next variant, restoring current position |
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270 | pop si |
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271 | .next_variant1: |
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272 | ; continue to the next variant |
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273 | ; skip over the parser |
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274 | inc bx |
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275 | inc bx |
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276 | jmp .find_variant |
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277 | .parse_done: |
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278 | .config_bad: |
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279 | |||
280 | ; set up segment registers |
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281 | push cs |
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282 | pop ds |
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283 | else |
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284 | cld |
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7129 | dunkaist | 285 | push 0 |
286 | pop es |
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2288 | clevermous | 287 | ; if bootloader sets ax = 'KL', then ds:si points to loader block |
288 | cmp ax, 'KL' |
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289 | jnz @f |
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290 | mov word [cs:cfgmanager.loader_block], si |
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291 | mov word [cs:cfgmanager.loader_block+2], ds |
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7132 | dunkaist | 292 | mov word [es:BOOT_LO.kernel_restart], kernel_restart_bootblock |
2288 | clevermous | 293 | @@: |
7129 | dunkaist | 294 | ; if bootloader sets cx = 'HA' and dx = 'RD', then bx contains identifier of source disk |
8089 | dunkaist | 295 | ; (see comment to BOOT_LO.sys_disk and loader_doc.txt) |
296 | mov word [es:BOOT_LO.sys_disk], 'r1' ; default value: /rd/1 |
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2288 | clevermous | 297 | cmp cx, 'HA' |
298 | jnz no_hd_load |
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299 | cmp dx, 'RD' |
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300 | jnz no_hd_load |
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8089 | dunkaist | 301 | mov [es:BOOT_LO.sys_disk], bx |
2288 | clevermous | 302 | no_hd_load: |
303 | |||
304 | ; set up stack |
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5790 | serge | 305 | mov ax, (TMP_STACK_TOP and 0xF0000) shr 4 |
2288 | clevermous | 306 | mov ss, ax |
5786 | serge | 307 | mov sp, TMP_STACK_TOP and 0xFFFF |
2288 | clevermous | 308 | ; set up segment registers |
309 | push cs |
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310 | pop ds |
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311 | push cs |
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312 | pop es |
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313 | end if |
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314 | |||
315 | ; set videomode |
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316 | mov ax, 3 |
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317 | int 0x10 |
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318 | |||
319 | if lang eq ru |
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320 | ; Load & set russian VGA font (RU.INC) |
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321 | mov bp, RU_FNT1 ; RU_FNT1 - First part |
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322 | mov bx, 1000h ; 768 bytes |
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323 | mov cx, 30h ; 48 symbols |
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324 | mov dx, 80h ; 128 - position of first symbol |
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325 | mov ax, 1100h |
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326 | int 10h |
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327 | |||
328 | mov bp, RU_FNT2 ; RU_FNT2 -Second part |
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329 | mov bx, 1000h ; 512 bytes |
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330 | mov cx, 20h ; 32 symbols |
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331 | mov dx, 0E0h ; 224 - position of first symbol |
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332 | mov ax, 1100h |
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333 | int 10h |
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334 | ; End set VGA russian font |
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335 | else if lang eq et |
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336 | mov bp, ET_FNT ; ET_FNT1 |
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337 | mov bx, 1000h ; |
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338 | mov cx, 255 ; 256 symbols |
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339 | xor dx, dx ; 0 - position of first symbol |
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340 | mov ax, 1100h |
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341 | int 10h |
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342 | end if |
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343 | |||
344 | ; draw frames |
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345 | push 0xb800 |
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346 | pop es |
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347 | xor di, di |
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348 | mov ah, 1*16+15 |
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349 | |||
350 | ; draw top |
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351 | mov si, d80x25_top |
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352 | mov cx, d80x25_top_num * 80 |
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353 | @@: |
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354 | lodsb |
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355 | stosw |
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356 | loop @b |
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357 | ; draw spaces |
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358 | mov si, space_msg |
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359 | mov dx, 25 - d80x25_top_num - d80x25_bottom_num |
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360 | dfl1: |
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361 | push si |
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362 | mov cx, 80 |
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363 | @@: |
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364 | lodsb |
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365 | stosw |
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366 | loop @b |
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367 | pop si |
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368 | dec dx |
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369 | jnz dfl1 |
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370 | ; draw bottom |
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371 | mov si, d80x25_bottom |
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372 | mov cx, d80x25_bottom_num * 80 |
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373 | @@: |
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374 | lodsb |
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375 | stosw |
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376 | loop @b |
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377 | |||
378 | mov byte [space_msg+80], 0 ; now space_msg is null terminated |
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379 | |||
380 | _setcursor d80x25_top_num,0 |
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381 | |||
382 | |||
383 | ; TEST FOR 386+ |
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384 | |||
385 | mov bx, 0x4000 |
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386 | pushf |
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387 | pop ax |
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388 | mov dx, ax |
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389 | xor ax, bx |
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390 | push ax |
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391 | popf |
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392 | pushf |
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393 | pop ax |
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394 | and ax, bx |
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395 | and dx, bx |
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396 | cmp ax, dx |
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397 | jnz cpugood |
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398 | mov si, not386 |
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399 | sayerr: |
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400 | call print |
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401 | jmp $ |
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402 | cpugood: |
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403 | |||
404 | push 0 |
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405 | popf |
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406 | |||
407 | ; set up esp |
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408 | movzx esp, sp |
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409 | |||
410 | push 0 |
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411 | pop es |
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3774 | mario79 | 412 | |
5012 | clevermous | 413 | xor cx, cx |
414 | @@: |
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415 | in al, 64h |
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416 | test al, 2 |
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417 | loopnz @b |
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418 | |||
3539 | clevermous | 419 | mov al, 0xf6 ; Сброс клавиатуры, разрешить сканирование |
2288 | clevermous | 420 | out 0x60, al |
421 | xor cx, cx |
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5012 | clevermous | 422 | @@: |
2288 | clevermous | 423 | in al, 64h |
5012 | clevermous | 424 | test al, 1 |
5028 | clevermous | 425 | loopz @b |
5012 | clevermous | 426 | in al, 0x60 |
2288 | clevermous | 427 | |
428 | ; set keyboard typematic rate & delay |
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429 | mov al, 0xf3 |
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430 | out 0x60, al |
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431 | xor cx, cx |
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432 | @@: |
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433 | in al, 64h |
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5012 | clevermous | 434 | test al, 1 |
5028 | clevermous | 435 | loopz @b |
5012 | clevermous | 436 | in al, 0x60 |
2288 | clevermous | 437 | mov al, 0 |
438 | out 0x60, al |
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439 | xor cx, cx |
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440 | @@: |
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441 | in al, 64h |
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5012 | clevermous | 442 | test al, 1 |
5028 | clevermous | 443 | loopz @b |
5012 | clevermous | 444 | in al, 0x60 |
2288 | clevermous | 445 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
5012 | clevermous | 446 | sti |
2288 | clevermous | 447 | ; --------------- APM --------------------- |
7132 | dunkaist | 448 | and word [es:BOOT_LO.apm_version], 0 ; ver = 0.0 (APM not found) |
2288 | clevermous | 449 | mov ax, 0x5300 |
450 | xor bx, bx |
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451 | int 0x15 |
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452 | jc apm_end ; APM not found |
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453 | test cx, 2 |
||
454 | jz apm_end ; APM 32-bit protected-mode interface not supported |
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7132 | dunkaist | 455 | mov [es:BOOT_LO.apm_version], ax ; Save APM Version |
456 | mov [es:BOOT_LO.apm_flags], cx ; Save APM flags |
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2288 | clevermous | 457 | |
458 | ; Write APM ver ---- |
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459 | and ax, 0xf0f |
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460 | add ax, '00' |
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461 | mov si, msg_apm |
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462 | mov [si + 5], ah |
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463 | mov [si + 7], al |
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464 | _setcursor 0, 3 |
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465 | call printplain |
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466 | ; ------------------ |
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467 | |||
468 | mov ax, 0x5304 ; Disconnect interface |
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469 | xor bx, bx |
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470 | int 0x15 |
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471 | mov ax, 0x5303 ; Connect 32 bit mode interface |
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472 | xor bx, bx |
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473 | int 0x15 |
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474 | |||
7132 | dunkaist | 475 | mov [es:BOOT_LO.apm_entry], ebx |
476 | mov [es:BOOT_LO.apm_code_32], ax |
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477 | mov [es:BOOT_LO.apm_code_16], cx |
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478 | mov [es:BOOT_LO.apm_data_16], dx |
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2288 | clevermous | 479 | |
480 | apm_end: |
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481 | _setcursor d80x25_top_num, 0 |
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482 | |||
483 | if ~ defined extended_primary_loader |
||
484 | ;CHECK current of code |
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485 | cmp [cfgmanager.loader_block], -1 |
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486 | jz noloaderblock |
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487 | les bx, [cfgmanager.loader_block] |
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488 | cmp byte [es:bx], 1 |
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489 | mov si, loader_block_error |
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490 | jnz sayerr |
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491 | push 0 |
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492 | pop es |
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493 | end if |
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494 | |||
495 | noloaderblock: |
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496 | ; DISPLAY VESA INFORMATION |
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497 | call print_vesa_info |
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498 | call calc_vmodes_table |
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499 | call check_first_parm ;check and enable cursor_pos |
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500 | |||
501 | cfgmanager: |
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502 | ; settings: |
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503 | ; a) preboot_graph = graphical mode |
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504 | ; preboot_gprobe = probe this mode? |
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3777 | yogev_ezra | 505 | ; b) preboot_biosdisk = use BIOS disks through V86 emulation? // (earlier was: preboot_dma = use DMA access?) |
7121 | dunkaist | 506 | ; c) preboot_debug = duplicates kernel debug output to the screen |
3777 | yogev_ezra | 507 | ; d) preboot_launcher = start the first app (right now it's LAUNCHER) after kernel is loaded? |
508 | ; e) preboot_device = from where to boot? |
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2288 | clevermous | 509 | |
510 | ; determine default settings |
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511 | if ~ defined extended_primary_loader |
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512 | mov [.bSettingsChanged], 0 |
||
513 | end if |
||
514 | |||
515 | ;.preboot_gr_end: |
||
516 | mov di, preboot_device |
||
517 | ; if image in memory is present and [preboot_device] is uninitialized, |
||
518 | ; set it to use this preloaded image |
||
519 | cmp byte [di], 0 |
||
520 | jnz .preboot_device_inited |
||
521 | if defined extended_primary_loader |
||
522 | inc byte [di] |
||
523 | cmp byte [bootdevice], 'f' ; floppy? |
||
524 | jz .preboot_device_inited |
||
525 | inc byte [di] |
||
526 | else |
||
527 | cmp [.loader_block], -1 |
||
528 | jz @f |
||
529 | les bx, [.loader_block] |
||
530 | test byte [es:bx+1], 1 |
||
531 | jz @f |
||
532 | mov byte [di], 3 |
||
533 | jmp .preboot_device_inited |
||
534 | @@: |
||
535 | ; otherwise, set [preboot_device] to 1 (default value - boot from floppy) |
||
536 | mov byte [di], 1 |
||
537 | end if |
||
538 | .preboot_device_inited: |
||
539 | ; following 4 lines set variables to 1 if its current value is 0 |
||
540 | cmp byte [di+preboot_dma-preboot_device], 1 |
||
541 | adc byte [di+preboot_dma-preboot_device], 0 |
||
3777 | yogev_ezra | 542 | cmp byte [di+preboot_launcher-preboot_device], 1 ; Start LAUNCHER by default |
5786 | serge | 543 | adc byte [di+preboot_launcher-preboot_device], 0 |
2288 | clevermous | 544 | _setcursor 5,2 |
545 | |||
546 | mov si, linef |
||
547 | call printplain |
||
548 | mov si, start_msg |
||
549 | call print |
||
550 | mov si, time_msg |
||
551 | call print |
||
552 | ; get start time |
||
553 | call .gettime |
||
554 | mov [.starttime], eax |
||
555 | mov word [.timer], .newtimer |
||
556 | mov word [.timer+2], cs |
||
557 | .printcfg: |
||
558 | |||
559 | _setcursor 9,0 |
||
560 | mov si, current_cfg_msg |
||
561 | call print |
||
562 | mov si, curvideo_msg |
||
563 | call print |
||
564 | |||
565 | call draw_current_vmode |
||
566 | |||
567 | mov si, usebd_msg |
||
568 | cmp [preboot_biosdisk], 1 |
||
569 | call .say_on_off |
||
3777 | yogev_ezra | 570 | mov si, debug_mode_msg |
571 | cmp [preboot_debug], 1 |
||
572 | call .say_on_off |
||
573 | mov si, launcher_msg |
||
574 | cmp [preboot_launcher], 1 |
||
575 | call .say_on_off |
||
2288 | clevermous | 576 | mov si, preboot_device_msg |
577 | call print |
||
578 | mov al, [preboot_device] |
||
579 | if defined extended_primary_loader |
||
580 | and eax, 3 |
||
581 | else |
||
582 | and eax, 7 |
||
583 | end if |
||
584 | mov si, [preboot_device_msgs+eax*2] |
||
585 | call printplain |
||
586 | .show_remarks: |
||
587 | ; show remarks in gray color |
||
588 | mov di, ((21-num_remarks)*80 + 2)*2 |
||
589 | push 0xB800 |
||
590 | pop es |
||
591 | mov cx, num_remarks |
||
592 | mov si, remarks |
||
593 | .write_remarks: |
||
594 | lodsw |
||
595 | push si |
||
596 | xchg ax, si |
||
597 | mov ah, 1*16+7 ; background: blue (1), foreground: gray (7) |
||
598 | push di |
||
599 | .write_remark: |
||
600 | lodsb |
||
601 | test al, al |
||
602 | jz @f |
||
603 | stosw |
||
604 | jmp .write_remark |
||
605 | @@: |
||
606 | pop di |
||
607 | pop si |
||
608 | add di, 80*2 |
||
609 | loop .write_remarks |
||
610 | .wait: |
||
611 | _setcursor 25,0 ; out of screen |
||
612 | ; set timer interrupt handler |
||
613 | cli |
||
614 | push 0 |
||
615 | pop es |
||
616 | push dword [es:8*4] |
||
617 | pop dword [.oldtimer] |
||
618 | push dword [.timer] |
||
619 | pop dword [es:8*4] |
||
620 | ; mov eax, [es:8*4] |
||
621 | ; mov [.oldtimer], eax |
||
622 | ; mov eax, [.timer] |
||
623 | ; mov [es:8*4], eax |
||
624 | sti |
||
625 | ; wait for keypressed |
||
626 | xor ax, ax |
||
627 | int 16h |
||
628 | push ax |
||
629 | ; restore timer interrupt |
||
630 | ; push 0 |
||
631 | ; pop es |
||
632 | mov eax, [.oldtimer] |
||
633 | mov [es:8*4], eax |
||
634 | mov [.timer], eax |
||
635 | |||
636 | _setcursor 7,0 |
||
637 | mov si, space_msg |
||
638 | call printplain |
||
639 | ; clear remarks and restore normal attributes |
||
640 | push es |
||
641 | mov di, ((21-num_remarks)*80 + 2)*2 |
||
642 | push 0xB800 |
||
643 | pop es |
||
644 | mov cx, num_remarks |
||
645 | mov ax, ' ' + (1*16 + 15)*100h |
||
646 | @@: |
||
647 | push cx |
||
648 | mov cx, 76 |
||
649 | rep stosw |
||
650 | pop cx |
||
651 | add di, 4*2 |
||
652 | loop @b |
||
653 | pop es |
||
654 | pop ax |
||
655 | ; switch on key |
||
656 | cmp al, 13 |
||
657 | jz .continue |
||
658 | or al, 20h |
||
3777 | yogev_ezra | 659 | cmp al, 'a' ; select graphical mode |
2288 | clevermous | 660 | jz .change_a |
3760 | hidnplayr | 661 | cmp al, 'q' ; Trick to make 'A' key on azerty keyboard work |
662 | je .change_a |
||
3777 | yogev_ezra | 663 | cmp al, 'b' ; use BIOS disks? // (selecting YES will make BIOS disks visible as /bd) |
2288 | clevermous | 664 | jz .change_b |
7121 | dunkaist | 665 | cmp al, 'c' ; load kernel in debug mode? |
3777 | yogev_ezra | 666 | jz .change_c |
667 | cmp al, 'd' ; start launcher after kernel is loaded? |
||
668 | jz .change_d |
||
669 | cmp al, 'e' ; select boot origin |
||
2288 | clevermous | 670 | jnz .show_remarks |
3777 | yogev_ezra | 671 | ; e) preboot_device = from where to boot? |
2288 | clevermous | 672 | if defined extended_primary_loader |
8091 | dunkaist | 673 | _ask_question bdev,'13',preboot_device ; range accepted for answer: 1-3 |
2288 | clevermous | 674 | else |
3989 | yogev_ezra | 675 | _ask_question bdev,'14',preboot_device ; range accepted for answer: 1-4 |
5786 | serge | 676 | end if |
3777 | yogev_ezra | 677 | _setcursor 14,0 |
3989 | yogev_ezra | 678 | |
2288 | clevermous | 679 | .d: |
680 | if ~ defined extended_primary_loader |
||
681 | mov [.bSettingsChanged], 1 |
||
682 | end if |
||
3989 | yogev_ezra | 683 | .esc_pressed: |
2288 | clevermous | 684 | call clear_vmodes_table ;clear vmodes_table |
685 | jmp .printcfg |
||
3989 | yogev_ezra | 686 | |
2288 | clevermous | 687 | .change_a: |
3797 | mario79 | 688 | call clear_vmodes_table ;clear vmodes_table |
3999 | mario79 | 689 | |
690 | mov si, word [cursor_pos] |
||
691 | mov word [cursor_pos_old], si |
||
2288 | clevermous | 692 | .loops: |
693 | call draw_vmodes_table |
||
694 | _setcursor 25,0 ; out of screen |
||
695 | xor ax, ax |
||
696 | int 0x16 |
||
697 | ; call clear_table_cursor ;clear current position of cursor |
||
698 | |||
699 | mov si, word [cursor_pos] |
||
700 | |||
3989 | yogev_ezra | 701 | cmp al, 27 ; If ESC was pressed, do not change the value |
3999 | mario79 | 702 | jnz @f ; Just exit the resolution selection box |
703 | |||
704 | mov si, word [cursor_pos_old] |
||
705 | mov word [cursor_pos], si |
||
706 | jmp .esc_pressed |
||
707 | @@: |
||
2288 | clevermous | 708 | cmp ah, 0x48;x,0x48E0 ; up |
709 | jne .down |
||
710 | cmp si, modes_table |
||
711 | jbe .loops |
||
712 | sub word [cursor_pos], size_of_step |
||
713 | jmp .loops |
||
714 | |||
715 | .down: |
||
716 | cmp ah, 0x50;x,0x50E0 ; down |
||
717 | jne .pgup |
||
718 | cmp word[es:si+10], -1 |
||
719 | je .loops |
||
720 | add word [cursor_pos], size_of_step |
||
721 | jmp .loops |
||
722 | |||
723 | .pgup: |
||
724 | cmp ah, 0x49 ; page up |
||
725 | jne .pgdn |
||
726 | sub si, size_of_step*long_v_table |
||
727 | cmp si, modes_table |
||
728 | jae @f |
||
729 | mov si, modes_table |
||
730 | @@: |
||
731 | mov word [cursor_pos], si |
||
732 | mov si, word [home_cursor] |
||
733 | sub si, size_of_step*long_v_table |
||
734 | cmp si, modes_table |
||
735 | jae @f |
||
736 | mov si, modes_table |
||
737 | @@: |
||
738 | mov word [home_cursor], si |
||
739 | jmp .loops |
||
740 | |||
741 | .pgdn: |
||
742 | cmp ah, 0x51 ; page down |
||
743 | jne .enter |
||
744 | mov ax, [end_cursor] |
||
745 | add si, size_of_step*long_v_table |
||
746 | cmp si, ax |
||
747 | jb @f |
||
748 | mov si, ax |
||
749 | sub si, size_of_step |
||
750 | @@: |
||
751 | mov word [cursor_pos], si |
||
752 | mov si, word [home_cursor] |
||
753 | sub ax, size_of_step*long_v_table |
||
754 | add si, size_of_step*long_v_table |
||
755 | cmp si, ax |
||
756 | jb @f |
||
757 | mov si, ax |
||
758 | @@: |
||
759 | mov word [home_cursor], si |
||
760 | jmp .loops |
||
761 | |||
762 | .enter: |
||
763 | cmp al, 0x0D;x,0x1C0D ; enter |
||
764 | jne .loops |
||
765 | push word [cursor_pos] |
||
766 | pop bp |
||
767 | push word [es:bp] |
||
768 | pop word [x_save] |
||
769 | push word [es:bp+2] |
||
770 | pop word [y_save] |
||
771 | push word [es:bp+6] |
||
772 | pop word [number_vm] |
||
773 | mov word [preboot_graph], bp ;save choose |
||
774 | |||
775 | jmp .d |
||
776 | |||
3777 | yogev_ezra | 777 | .change_b: ; b) preboot_biosdisk = use BIOS disks through V86 emulation? |
3989 | yogev_ezra | 778 | ; _setcursor 16,0 |
3777 | yogev_ezra | 779 | ; mov si, ask_dma // (earlier was: preboot_dma = use DMA access?) |
2288 | clevermous | 780 | ; call print |
3796 | yogev_ezra | 781 | ; mov bx, '13' ; range accepted for answer: 1-3 |
2288 | clevermous | 782 | ; call getkey |
783 | ; mov [preboot_dma], al |
||
3989 | yogev_ezra | 784 | _ask_question ask_bd,'12',preboot_biosdisk ; range accepted for answer: 1-2 |
2288 | clevermous | 785 | _setcursor 11,0 |
786 | jmp .d |
||
3796 | yogev_ezra | 787 | .change_c: ; c) preboot_debug = duplicates kernel debug output to the screen |
3989 | yogev_ezra | 788 | _ask_question ask_debug,'12',preboot_debug ; range accepted for answer: 1-2 |
3777 | yogev_ezra | 789 | _setcursor 12,0 |
790 | jmp .d |
||
3796 | yogev_ezra | 791 | .change_d: ; d) preboot_launcher = start the first app (right now it's LAUNCHER) after kernel is loaded? |
3989 | yogev_ezra | 792 | _ask_question ask_launcher,'12',preboot_launcher ; range accepted for answer: 1-2 |
3777 | yogev_ezra | 793 | _setcursor 13,0 |
794 | jmp .d |
||
2288 | clevermous | 795 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
796 | .say_on_off: |
||
797 | pushf |
||
798 | call print |
||
799 | mov si, on_msg |
||
800 | popf |
||
801 | jz @f |
||
802 | mov si, off_msg |
||
803 | @@: |
||
804 | jmp printplain |
||
805 | ; novesa and vervesa strings are not used at the moment of executing this code |
||
806 | virtual at novesa |
||
807 | .oldtimer dd ? |
||
808 | .starttime dd ? |
||
809 | if ~ defined extended_primary_loader |
||
810 | .bSettingsChanged db ? |
||
811 | end if |
||
812 | .timer dd ? |
||
813 | end virtual |
||
814 | if ~ defined extended_primary_loader |
||
815 | .loader_block dd -1 |
||
816 | end if |
||
817 | .gettime: |
||
818 | mov ah, 0 |
||
819 | int 1Ah |
||
820 | xchg ax, cx |
||
821 | shl eax, 10h |
||
822 | xchg ax, dx |
||
823 | ret |
||
824 | .newtimer: |
||
825 | push ds |
||
826 | push cs |
||
827 | pop ds |
||
828 | pushf |
||
829 | call [.oldtimer] |
||
830 | pushad |
||
831 | call .gettime |
||
832 | sub eax, [.starttime] |
||
833 | if defined extended_primary_loader |
||
834 | sub ax, [preboot_timeout] |
||
835 | else |
||
7586 | dunkaist | 836 | ; bios 0x1A timer runs at ~18 ticks per second |
837 | sub ax, 18*PREBOOT_TIMEOUT |
||
2288 | clevermous | 838 | end if |
839 | jae .timergo |
||
840 | neg ax |
||
841 | add ax, 18-1 |
||
842 | mov bx, 18 |
||
843 | xor dx, dx |
||
844 | div bx |
||
845 | if lang eq ru |
||
3539 | clevermous | 846 | ; подождите 5 секунд, 4/3/2 секунды, 1 секунду |
2288 | clevermous | 847 | cmp al, 5 |
848 | mov cl, ' ' |
||
849 | jae @f |
||
850 | cmp al, 1 |
||
3539 | clevermous | 851 | mov cl, 0xE3 ; 'у' in cp866 |
2288 | clevermous | 852 | jz @f |
3539 | clevermous | 853 | mov cl, 0xEB ; 'ы' in cp866 |
2288 | clevermous | 854 | @@: |
855 | mov [time_str+9], cl |
||
856 | else if lang eq et |
||
857 | cmp al, 1 |
||
858 | ja @f |
||
3539 | clevermous | 859 | mov byte [time_str+9], ' ' |
860 | mov byte [time_str+10], ' ' |
||
2288 | clevermous | 861 | @@: |
3274 | esevece | 862 | else if lang eq sp |
863 | ; esperar 5/4/3/2 segundos, 1 segundo |
||
864 | cmp al, 1 |
||
865 | mov cl, 's' |
||
866 | ja @f |
||
867 | mov cl, ' ' |
||
868 | @@: |
||
869 | mov [time_str+10], cl |
||
2288 | clevermous | 870 | else |
871 | ; wait 5/4/3/2 seconds, 1 second |
||
872 | cmp al, 1 |
||
873 | mov cl, 's' |
||
874 | ja @f |
||
875 | mov cl, ' ' |
||
876 | @@: |
||
877 | mov [time_str+9], cl |
||
878 | end if |
||
879 | add al, '0' |
||
880 | mov [time_str+1], al |
||
881 | mov si, time_msg |
||
882 | _setcursor 7,0 |
||
883 | call print |
||
884 | _setcursor 25,0 |
||
885 | popad |
||
886 | pop ds |
||
887 | iret |
||
888 | .timergo: |
||
889 | push 0 |
||
890 | pop es |
||
891 | mov eax, [.oldtimer] |
||
892 | mov [es:8*4], eax |
||
893 | mov sp, 0EC00h |
||
894 | .continue: |
||
895 | sti |
||
896 | _setcursor 6,0 |
||
897 | mov si, space_msg |
||
898 | call printplain |
||
899 | call printplain |
||
900 | _setcursor 6,0 |
||
901 | mov si, loading_msg |
||
902 | call print |
||
3777 | yogev_ezra | 903 | _setcursor 16,0 |
2288 | clevermous | 904 | if ~ defined extended_primary_loader |
905 | cmp [.bSettingsChanged], 0 |
||
906 | jz .load |
||
907 | cmp [.loader_block], -1 |
||
908 | jz .load |
||
909 | les bx, [.loader_block] |
||
910 | mov eax, [es:bx+3] |
||
911 | push ds |
||
912 | pop es |
||
913 | test eax, eax |
||
914 | jz .load |
||
915 | push eax |
||
916 | mov si, save_quest |
||
917 | call print |
||
918 | .waityn: |
||
919 | mov ah, 0 |
||
920 | int 16h |
||
921 | or al, 20h |
||
922 | cmp al, 'n' |
||
923 | jz .loadc |
||
3430 | esevece | 924 | if lang eq sp |
925 | cmp al, 's' |
||
926 | else |
||
2288 | clevermous | 927 | cmp al, 'y' |
3430 | esevece | 928 | end if |
2288 | clevermous | 929 | jnz .waityn |
930 | call putchar |
||
931 | mov byte [space_msg+80], 186 |
||
932 | |||
933 | pop eax |
||
934 | push cs |
||
935 | push .cont |
||
936 | push eax |
||
9942 | turbocat | 937 | retf ;call back |
2288 | clevermous | 938 | .loadc: |
939 | pop eax |
||
940 | .cont: |
||
941 | push cs |
||
942 | pop ds |
||
9942 | turbocat | 943 | |
944 | push es |
||
945 | les bx, [.loader_block] |
||
946 | cmp byte [es:bx+7], 0 ; get write error flag |
||
947 | pop es |
||
948 | jz .load |
||
949 | call clear_status_field |
||
950 | mov si, write_err_msg |
||
951 | call print |
||
952 | .wait_any_key: |
||
953 | xor ax, ax |
||
954 | int 16h |
||
955 | test ax, ax |
||
956 | jz .wait_any_key |
||
957 | |||
2288 | clevermous | 958 | .load: |
9942 | turbocat | 959 | call clear_status_field |
2288 | clevermous | 960 | end if |
961 | |||
962 | ; ASK GRAPHICS MODE |
||
963 | |||
964 | call set_vmode |
||
965 | |||
966 | ; GRAPHICS ACCELERATION |
||
967 | ; force yes |
||
7132 | dunkaist | 968 | mov [es:BOOT_LO.mtrr], byte 1 |
2288 | clevermous | 969 | |
970 | ; DMA ACCESS TO HD |
||
971 | |||
972 | mov al, [preboot_dma] |
||
7132 | dunkaist | 973 | mov [es:BOOT_LO.dma], al |
2288 | clevermous | 974 | |
3777 | yogev_ezra | 975 | ; Set kernel DEBUG mode - if nonzero, duplicates debug output to the screen. |
976 | mov al, [preboot_debug] |
||
7132 | dunkaist | 977 | mov [es:BOOT_LO.debug_print], al ;// 0x901E |
3777 | yogev_ezra | 978 | |
979 | ; Start the first app (right now it's LAUNCHER) after kernel is loaded? |
||
980 | mov al, [preboot_launcher] |
||
7132 | dunkaist | 981 | mov [es:BOOT_LO.launcher_start], al ;// 0x901D |
3777 | yogev_ezra | 982 | |
2288 | clevermous | 983 | ; BOOT DEVICE |
984 | |||
985 | mov al, [preboot_device] |
||
8091 | dunkaist | 986 | if defined extended_primary_loader |
987 | cmp al, RD_LOAD_FROM_MEMORY |
||
988 | jnz @f |
||
989 | mov al, RD_LOAD_FROM_NONE |
||
990 | @@: |
||
991 | end if |
||
8089 | dunkaist | 992 | mov [es:BOOT_LO.rd_load_from], al |
2288 | clevermous | 993 | |
8091 | dunkaist | 994 | ; /sys path |
995 | mov eax, dword[preboot_syspath+0] |
||
996 | mov dword[es:BOOT_LO.syspath+0], eax |
||
997 | mov eax, dword[preboot_syspath+4] |
||
998 | mov dword[es:BOOT_LO.syspath+4], eax |
||
999 | mov eax, dword[preboot_syspath+8] |
||
1000 | mov dword[es:BOOT_LO.syspath+8], eax |
||
1001 | mov eax, dword[preboot_syspath+12] |
||
1002 | mov dword[es:BOOT_LO.syspath+12], eax |
||
1003 | |||
1004 | |||
2288 | clevermous | 1005 | ; GET MEMORY MAP |
1006 | include '../detect/biosmem.inc' |
||
1007 | |||
1008 | ; READ DISKETTE TO MEMORY |
||
1009 | |||
8089 | dunkaist | 1010 | cmp byte [es:BOOT_LO.rd_load_from], RD_LOAD_FROM_FLOPPY |
2288 | clevermous | 1011 | jne no_sys_on_floppy |
1012 | mov si, diskload |
||
1013 | call print |
||
9942 | turbocat | 1014 | xor ax, ax ; reset drive |
1015 | xor dx, dx ; 1st floppy disk (0) |
||
2288 | clevermous | 1016 | int 0x13 |
1017 | ; do we boot from CD-ROM? |
||
9942 | turbocat | 1018 | mov ah, 41h ; check extended mode |
1019 | mov bx, 55AAh ; test 2 bytes to check that this function is supported |
||
1020 | xor dx, dx ; 1st floppy disk (0) |
||
2288 | clevermous | 1021 | int 0x13 |
9942 | turbocat | 1022 | jc .nocd ; extended mode not supported |
2288 | clevermous | 1023 | cmp bx, 0AA55h |
9942 | turbocat | 1024 | jnz .nocd ; extended mode not supported |
1025 | mov ah, 48h ; extended read drive parameters |
||
2288 | clevermous | 1026 | push ds |
1027 | push es |
||
1028 | pop ds |
||
1029 | mov si, 0xa000 |
||
9942 | turbocat | 1030 | mov word [si], 30 ; size of result buffer |
2288 | clevermous | 1031 | int 0x13 |
1032 | pop ds |
||
9942 | turbocat | 1033 | jc .nocd ; error getting parameters |
2288 | clevermous | 1034 | push ds |
9942 | turbocat | 1035 | lds si, [es:si+26] ; pointer to Enhanced Disk Drive (EDD) configuration parameters |
1036 | test byte [ds:si+10], 40h ; check ATAPI device |
||
2288 | clevermous | 1037 | pop ds |
1038 | jz .nocd |
||
9942 | turbocat | 1039 | |
2288 | clevermous | 1040 | ; yes - read all floppy by 18 sectors |
1041 | |||
1042 | ; TODO: !!!! read only first sector and set variables !!!!! |
||
1043 | ; ... |
||
1044 | ; TODO: !!! then read flippy image track by track |
||
9942 | turbocat | 1045 | |
2288 | clevermous | 1046 | mov cx, 0x0001 ; startcyl,startsector |
1047 | .a1: |
||
1048 | push cx dx |
||
1049 | mov al, 18 |
||
1050 | mov bx, 0xa000 |
||
1051 | call boot_read_floppy |
||
1052 | mov si, movedesc |
||
1053 | push es |
||
1054 | push ds |
||
1055 | pop es |
||
1056 | mov cx, 256*18 |
||
1057 | mov ah, 0x87 |
||
1058 | int 0x15 |
||
1059 | pop es |
||
1060 | pop dx cx |
||
1061 | test ah, ah |
||
1062 | jnz sayerr_floppy |
||
1063 | add dword [si+8*3+2], 512*18 |
||
1064 | inc dh |
||
1065 | cmp dh, 2 |
||
1066 | jnz .a1 |
||
1067 | mov dh, 0 |
||
1068 | inc ch |
||
1069 | cmp ch, 80 |
||
1070 | jae ok_sys_on_floppy |
||
1071 | pusha |
||
1072 | mov al, ch |
||
1073 | shr ch, 2 |
||
1074 | add al, ch |
||
1075 | aam |
||
1076 | xchg al, ah |
||
1077 | add ax, '00' |
||
1078 | mov si, pros |
||
1079 | mov [si], ax |
||
1080 | call printplain |
||
1081 | popa |
||
1082 | jmp .a1 |
||
1083 | .nocd: |
||
1084 | ; no - read only used sectors from floppy |
||
1085 | ; now load floppy image to memory |
||
1086 | ; at first load boot sector and first FAT table |
||
1087 | |||
1088 | ; read only first sector and fill variables |
||
1089 | mov cx, 0x0001 ; first logical sector |
||
1090 | xor dx, dx ; head = 0, drive = 0 (a:) |
||
1091 | mov al, 1 ; read one sector |
||
1092 | mov bx, 0xB000 ; es:bx -> data area |
||
1093 | call boot_read_floppy |
||
1094 | ; fill the necessary parameters to work with a floppy |
||
1095 | mov ax, word [es:bx+24] |
||
1096 | mov word [BPB_SecPerTrk], ax |
||
1097 | mov ax, word [es:bx+26] |
||
1098 | mov word [BPB_NumHeads], ax |
||
1099 | mov ax, word [es:bx+17] |
||
1100 | mov word [BPB_RootEntCnt], ax |
||
1101 | mov ax, word [es:bx+14] |
||
1102 | mov word [BPB_RsvdSecCnt], ax |
||
1103 | mov ax, word [es:bx+19] |
||
1104 | mov word [BPB_TotSec16], ax |
||
1105 | mov al, byte [es:bx+13] |
||
1106 | mov byte [BPB_SecPerClus], al |
||
1107 | mov al, byte [es:bx+16] |
||
1108 | mov byte [BPB_NumFATs], al |
||
1109 | ; |
||
1110 | mov ax, word [es:bx+22] |
||
1111 | mov word [BPB_FATSz16], ax |
||
1112 | mov cx, word [es:bx+11] |
||
1113 | mov word [BPB_BytsPerSec], cx |
||
1114 | |||
1115 | ; count of clusters in FAT12 ((size_of_FAT*2)/3) |
||
1116 | ; mov ax, word [BPB_FATSz16] |
||
1117 | ; mov cx, word [BPB_BytsPerSec] |
||
1118 | ;end |
||
1119 | xor dx, dx |
||
1120 | mul cx |
||
1121 | shl ax, 1 |
||
1122 | mov cx, 3 |
||
1123 | div cx ; now ax - number of clusters in FAT12 |
||
1124 | mov word [end_of_FAT], ax |
||
1125 | |||
1126 | ; load first FAT table |
||
1127 | mov cx, 0x0002 ; startcyl,startsector ; TODO!!!!! |
||
1128 | xor dx, dx ; starthead,drive |
||
1129 | mov al, byte [BPB_FATSz16] ; no of sectors to read |
||
1130 | add bx, word [BPB_BytsPerSec] ; es:bx -> data area |
||
1131 | call boot_read_floppy |
||
1132 | mov bx, 0xB000 |
||
1133 | |||
1134 | ; and copy them to extended memory |
||
1135 | mov si, movedesc |
||
1136 | mov [si+8*2+3], bh ; from |
||
1137 | |||
1138 | mov ax, word [BPB_BytsPerSec] |
||
1139 | shr ax, 1 ; words per sector |
||
1140 | mov cx, word [BPB_RsvdSecCnt] |
||
1141 | add cx, word [BPB_FATSz16] |
||
1142 | mul cx |
||
1143 | push ax ; save to stack count of words in boot+FAT |
||
1144 | xchg ax, cx |
||
1145 | |||
1146 | push es |
||
1147 | push ds |
||
1148 | pop es |
||
1149 | mov ah, 0x87 |
||
1150 | int 0x15 |
||
1151 | pop es |
||
1152 | test ah, ah |
||
1153 | jz @f |
||
1154 | sayerr_floppy: |
||
1155 | mov dx, 0x3f2 |
||
1156 | mov al, 0 |
||
1157 | out dx, al |
||
1158 | sayerr_memmove: |
||
1159 | mov si, memmovefailed |
||
1160 | jmp sayerr_plain |
||
1161 | @@: |
||
1162 | pop ax ; restore from stack count of words in boot+FAT |
||
1163 | shl ax, 1 ; make bytes count from count of words |
||
1164 | and eax, 0ffffh |
||
1165 | add dword [si+8*3+2], eax |
||
1166 | |||
1167 | ; copy first FAT to second copy |
||
1168 | ; TODO: BPB_NumFATs !!!!! |
||
1169 | add bx, word [BPB_BytsPerSec] ; !!! TODO: may be need multiply by BPB_RsvdSecCnt !!! |
||
1170 | mov byte [si+8*2+3], bh ; bx - begin of FAT |
||
1171 | |||
1172 | mov ax, word [BPB_BytsPerSec] |
||
1173 | shr ax, 1 ; words per sector |
||
1174 | mov cx, word [BPB_FATSz16] |
||
1175 | mul cx |
||
1176 | mov cx, ax ; cx - count of words in FAT |
||
1177 | |||
1178 | push es |
||
1179 | push ds |
||
1180 | pop es |
||
1181 | mov ah, 0x87 |
||
1182 | int 0x15 |
||
1183 | pop es |
||
1184 | test ah, ah |
||
1185 | jnz sayerr_floppy |
||
1186 | |||
1187 | mov ax, cx |
||
1188 | shl ax, 1 |
||
1189 | and eax, 0ffffh ; ax - count of bytes in FAT |
||
1190 | add dword [si+8*3+2], eax |
||
1191 | |||
1192 | ; reading RootDir |
||
1193 | ; TODO: BPB_NumFATs |
||
1194 | add bx, ax |
||
1195 | add bx, 100h |
||
1196 | and bx, 0ff00h ; bx - place in buffer to write RootDir |
||
1197 | push bx |
||
1198 | |||
1199 | mov bx, word [BPB_BytsPerSec] |
||
1200 | shr bx, 5 ; divide bx by 32 |
||
1201 | mov ax, word [BPB_RootEntCnt] |
||
1202 | xor dx, dx |
||
1203 | div bx |
||
1204 | push ax ; ax - count of RootDir sectors |
||
1205 | |||
1206 | mov ax, word [BPB_FATSz16] |
||
1207 | xor cx, cx |
||
1208 | mov cl, byte [BPB_NumFATs] |
||
1209 | mul cx |
||
1210 | add ax, word [BPB_RsvdSecCnt] ; ax - first sector of RootDir |
||
1211 | |||
1212 | mov word [FirstDataSector], ax |
||
1213 | pop bx |
||
1214 | push bx |
||
1215 | add word [FirstDataSector], bx ; Begin of data region of floppy |
||
1216 | |||
1217 | ; read RootDir |
||
1218 | call conv_abs_to_THS |
||
1219 | pop ax |
||
1220 | pop bx ; place in buffer to write |
||
1221 | push ax |
||
1222 | call boot_read_floppy ; read RootDir into buffer |
||
1223 | ; copy RootDir |
||
1224 | mov byte [si+8*2+3], bh ; from buffer |
||
1225 | pop ax ; ax = count of RootDir sectors |
||
1226 | mov cx, word [BPB_BytsPerSec] |
||
1227 | mul cx |
||
1228 | shr ax, 1 |
||
1229 | mov cx, ax ; count of words to copy |
||
1230 | push es |
||
1231 | push ds |
||
1232 | pop es |
||
1233 | mov ah, 0x87 |
||
1234 | int 0x15 |
||
1235 | pop es |
||
1236 | |||
1237 | mov ax, cx |
||
1238 | shl ax, 1 |
||
1239 | and eax, 0ffffh ; ax - count of bytes in RootDir |
||
1240 | add dword [si+8*3+2], eax ; add count of bytes copied |
||
1241 | |||
1242 | ; Reading data clusters from floppy |
||
1243 | mov byte [si+8*2+3], bh |
||
1244 | push bx |
||
1245 | |||
1246 | mov di, 2 ; First data cluster |
||
1247 | .read_loop: |
||
1248 | mov bx, di |
||
1249 | shr bx, 1 ; bx+di = di*1.5 |
||
1250 | jnc .even |
||
1251 | test word [es:bx+di+0xB200], 0xFFF0 ; TODO: may not be 0xB200 !!! |
||
1252 | jmp @f |
||
1253 | .even: |
||
1254 | test word [es:bx+di+0xB200], 0xFFF ; TODO: may not be 0xB200 !!! |
||
1255 | |||
1256 | @@: |
||
1257 | jz .skip |
||
1258 | ; read cluster di |
||
1259 | ;.read: |
||
1260 | ;conv cluster di to abs. sector ax |
||
1261 | ; ax = (N-2) * BPB_SecPerClus + FirstDataSector |
||
1262 | mov ax, di |
||
1263 | sub ax, 2 |
||
1264 | xor bx, bx |
||
1265 | mov bl, byte [BPB_SecPerClus] |
||
1266 | mul bx |
||
1267 | add ax, word [FirstDataSector] |
||
1268 | call conv_abs_to_THS |
||
1269 | pop bx |
||
1270 | push bx |
||
1271 | mov al, byte [BPB_SecPerClus] ; number of sectors in cluster |
||
1272 | call boot_read_floppy |
||
1273 | push es |
||
1274 | push ds |
||
1275 | pop es |
||
1276 | pusha |
||
1277 | ; |
||
1278 | mov ax, word [BPB_BytsPerSec] |
||
1279 | xor cx, cx |
||
1280 | mov cl, byte [BPB_SecPerClus] |
||
1281 | mul cx |
||
1282 | shr ax, 1 ; ax = (BPB_BytsPerSec * BPB_SecPerClus)/2 |
||
1283 | mov cx, ax ; number of words to copy (count words in cluster) |
||
1284 | ; |
||
1285 | mov ah, 0x87 |
||
1286 | int 0x15 ; copy data |
||
1287 | test ah, ah |
||
1288 | popa |
||
1289 | pop es |
||
1290 | jnz sayerr_floppy |
||
1291 | ; skip cluster di |
||
1292 | .skip: |
||
1293 | mov ax, word [BPB_BytsPerSec] |
||
1294 | xor cx, cx |
||
1295 | mov cl, byte [BPB_SecPerClus] |
||
1296 | mul cx |
||
1297 | and eax, 0ffffh ; ax - count of bytes in cluster |
||
1298 | add dword [si+8*3+2], eax |
||
1299 | |||
1300 | mov ax, word [end_of_FAT] ; max cluster number |
||
1301 | pusha |
||
1302 | ; draw percentage |
||
1303 | ; total clusters: ax |
||
1304 | ; read clusters: di |
||
1305 | xchg ax, di |
||
1306 | mov cx, 100 |
||
1307 | mul cx |
||
1308 | div di |
||
1309 | aam |
||
1310 | xchg al, ah |
||
1311 | add ax, '00' |
||
1312 | mov si, pros |
||
1313 | cmp [si], ax |
||
1314 | jz @f |
||
1315 | mov [si], ax |
||
1316 | call printplain |
||
1317 | @@: |
||
1318 | popa |
||
1319 | inc di |
||
1320 | cmp di, word [end_of_FAT] ; max number of cluster |
||
1321 | jnz .read_loop |
||
1322 | pop bx ; clear stack |
||
1323 | |||
1324 | ok_sys_on_floppy: |
||
1325 | mov si, backspace2 |
||
1326 | call printplain |
||
1327 | mov si, okt |
||
1328 | call printplain |
||
1329 | no_sys_on_floppy: |
||
1330 | xor ax, ax ; reset drive |
||
1331 | xor dx, dx |
||
1332 | int 0x13 |
||
1333 | mov dx, 0x3f2 ; floppy motor off |
||
1334 | mov al, 0 |
||
1335 | out dx, al |
||
1336 | |||
1337 | if defined extended_primary_loader |
||
8089 | dunkaist | 1338 | cmp [es:BOOT_LO.rd_load_from], RD_LOAD_FROM_HD |
2288 | clevermous | 1339 | jne no_sys_from_primary |
1340 | ; load kolibri.img using callback from primary loader |
||
1341 | and word [movedesc + 24 + 2], 0 |
||
1342 | mov byte [movedesc + 24 + 4], 10h |
||
1343 | ; read in blocks of 64K until file is fully loaded |
||
1344 | mov ax, 1 |
||
1345 | .repeat: |
||
1346 | mov di, image_file_struct |
||
1347 | call [bootcallback] |
||
1348 | push cs |
||
1349 | pop ds |
||
1350 | push cs |
||
1351 | pop es |
||
1352 | cmp bx, 1 |
||
1353 | ja sayerr_badsect |
||
1354 | push bx |
||
1355 | mov si, movedesc |
||
1356 | and word [si + 16 + 2], 0 |
||
1357 | mov byte [si + 16 + 4], 4 |
||
1358 | mov ah, 87h |
||
1359 | mov cx, 8000h |
||
1360 | int 15h |
||
1361 | pop bx |
||
1362 | test ah, ah |
||
1363 | jnz sayerr_memmove |
||
1364 | inc byte [si + 24 + 4] |
||
1365 | test bx, bx |
||
1366 | jz no_sys_from_primary |
||
1367 | mov ax, 2 |
||
1368 | jmp .repeat |
||
1369 | no_sys_from_primary: |
||
1370 | end if |
||
1371 | |||
1372 | ; SET GRAPHICS |
||
1373 | |||
1374 | xor ax, ax |
||
1375 | mov es, ax |
||
1376 | |||
7132 | dunkaist | 1377 | mov ax, [es:BOOT_LO.vesa_mode] ; vga & 320x200 |
2288 | clevermous | 1378 | mov bx, ax |
1379 | cmp ax, 0x13 |
||
1380 | je setgr |
||
1381 | cmp ax, 0x12 |
||
1382 | je setgr |
||
1383 | mov ax, 0x4f02 ; Vesa |
||
1384 | setgr: |
||
1385 | int 0x10 |
||
1386 | test ah, ah |
||
1387 | mov si, fatalsel |
||
1388 | jnz v_mode_error |
||
1389 | ; set mode 0x12 graphics registers: |
||
1390 | cmp bx, 0x12 |
||
1391 | jne gmok2 |
||
1392 | |||
1393 | mov al, 0x05 |
||
1394 | mov dx, 0x03ce |
||
1395 | push dx |
||
1396 | out dx, al ; select GDC mode register |
||
1397 | mov al, 0x02 |
||
1398 | inc dx |
||
1399 | out dx, al ; set write mode 2 |
||
1400 | |||
1401 | mov al, 0x02 |
||
1402 | mov dx, 0x03c4 |
||
1403 | out dx, al ; select VGA sequencer map mask register |
||
1404 | mov al, 0x0f |
||
1405 | inc dx |
||
1406 | out dx, al ; set mask for all planes 0-3 |
||
1407 | |||
1408 | mov al, 0x08 |
||
1409 | pop dx |
||
1410 | out dx, al ; select GDC bit mask register |
||
1411 | ; for writes to 0x03cf |
||
1412 | gmok2: |
||
1413 | push ds |
||
1414 | pop es |