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Rev 3022 Rev 4055
Line 99... Line 99...
99 
	mov %di, KA2PA(vesa_width)
 99 
	mov %di, KA2PA(vesa_width)
100 
	mov %bx, KA2PA(vesa_scanline)
 100 
	mov %bx, KA2PA(vesa_scanline)
101 
	shr $16, %ebx
 101 
	shr $16, %ebx
102 
	mov %bx, KA2PA(vesa_bpp)
 102 
	mov %bx, KA2PA(vesa_bpp)
103 
#endif
103 
#endif
104
104 
 
105 
	call map_kernel							# map kernel and turn paging on
 105 
	call map_kernel							# map kernel and turn paging on
- 
 
 106 
 
- 
 
 107 
	# arch_pre_main(grub_eax, grub_ebx)
- 
 
 108 
	pushl grub_ebx
- 
 
 109 
	pushl grub_eax
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 110 
	call arch_pre_main
106
111
107 
	movl grub_eax, %eax
 - 
 
108 
	movl grub_ebx, %ebx
 - 
 
109 
	cmpl $MULTIBOOT_LOADER_MAGIC, %eax				# compare GRUB signature
 - 
 
110 
	je valid_boot
 - 
 
111
- 
 
112 
		xorl %ecx, %ecx							# no memory map available
 - 
 
113 
		movl %ecx, e820counter
 - 
 
114
- 
 
115 
		jmp invalid_boot
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116
- 
 
117 
	valid_boot:
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118
- 
 
119 
		movl (%ebx), %eax						# ebx = physical address of struct multiboot_info
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120
- 
 
121 
		bt $3, %eax								# mbi->flags[3] (mods_count, mods_addr valid)
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122 
		jc mods_valid
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123
- 
 
124 
			xorl %ecx, %ecx
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125 
			movl %ecx, init
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126 
			jmp mods_end
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127
- 
 
128 
		mods_valid:
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129
- 
 
130 
		movl 20(%ebx), %ecx						# mbi->mods_count
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131 
		movl %ecx, init
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132
- 
 
133 
		cmpl $0, %ecx
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134 
		je mods_end
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135
- 
 
136 
		movl 24(%ebx), %esi						# mbi->mods_addr
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137 
		movl $init, %edi
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138
- 
 
139 
		mods_loop:
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140
- 
 
141 
			movl 0(%esi), %edx					# mods->mod_start
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142 
			addl $0x80000000, %edx
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143 
			movl %edx, 4(%edi)
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144
- 
 
145 
			movl 4(%esi), %edx
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146 
			subl 0(%esi), %edx					# mods->mod_end - mods->mod_start
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			movl %edx, 8(%edi)
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148
- 
 
149 
			addl $16, %esi
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150 
			addl $8	, %edi
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151
- 
 
152 
			loop mods_loop
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153
- 
 
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		mods_end:
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155
- 
 
156 
		bt $6, %eax								# mbi->flags[6] (mmap_length, mmap_addr valid)
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157 
		jc mmap_valid
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158
- 
 
159 
			xorl %edx, %edx
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160 
			jmp mmap_invalid
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161
- 
 
162 
		mmap_valid:
 - 
 
163 
		movl 44(%ebx), %ecx						# mbi->mmap_length
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164 
		movl 48(%ebx), %esi						# mbi->mmap_addr
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165 
		movl $e820table, %edi
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166 
		xorl %edx, %edx
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167
- 
 
168 
		mmap_loop:
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169 
			cmpl $0, %ecx
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170 
			jle mmap_end
 112 
	call main_bsp
171
- 
 
172 
			movl 4(%esi), %eax					# mmap->base_addr_low
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173 
			movl %eax, (%edi)
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174
- 
 
175 
			movl 8(%esi), %eax					# mmap->base_addr_high
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176 
			movl %eax, 4(%edi)
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177
- 
 
178 
			movl 12(%esi), %eax					# mmap->length_low
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179 
			movl %eax, 8(%edi)
 - 
 
180
- 
 
181 
			movl 16(%esi), %eax					# mmap->length_high
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			movl %eax, 12(%edi)
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183
- 
 
184 
			movl 20(%esi), %eax					# mmap->type
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185 
			movl %eax, 16(%edi)
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186
- 
 
187 
			movl (%esi), %eax					# mmap->size
 - 
 
188 
			addl $0x4, %eax
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189 
			addl %eax, %esi
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190 
			subl %eax, %ecx
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191 
			addl $MEMMAP_E820_RECORD_SIZE, %edi
 - 
 
192 
			incl %edx
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193 
			jmp mmap_loop
 - 
 
194
- 
 
195 
		mmap_end:
 - 
 
196
- 
 
197 
		mmap_invalid:
 - 
 
198 
		movl %edx, e820counter
 - 
 
199
- 
 
200 
	invalid_boot:
 - 
 
201
- 
 
202 
#ifdef CONFIG_SMP
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203
- 
 
204 
	# copy AP bootstrap routines below 1 MB
 - 
 
205
113
206 
	movl $BOOT_OFFSET, %esi
 - 
 
207 
	movl $AP_BOOT_OFFSET, %edi
 - 
 
208 
	movl $_hardcoded_unmapped_size, %ecx
 - 
 
209 
	rep movsb
 114 
	# Not reached.
210
115
211 
#endif
 - 
 
212 
 
 - 
 
213 
	call main_bsp								# never returns
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214 
 
 - 
 
215 
	cli
 116 
	cli
216 
	hlt
 117 
	hlt
217 
 
 118 
 
218 
.global map_kernel
 119 
.global map_kernel
219 
map_kernel:
 120 
map_kernel:
Line 440... Line 341...
440 
		mov $VESA_SET_PALETTE, %ax
 341 
		mov $VESA_SET_PALETTE, %ax
441 
		xor %bl, %bl
 342 
		xor %bl, %bl
442 
		xor %dx, %dx
 343 
		xor %dx, %dx
443 
		int $0x10
 344 
		int $0x10
444
345
- 
 
 346 
		cmp $0x00, %ah
445 
		jmp vga_not_compat
 347 
		je vga_not_compat
446
348
447 
	vga_compat:
 349 
	vga_compat:
448
350
449 
		# Try VGA registers to set palette
 351 
		# Try VGA registers to set palette
450
352