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1 | # |
1 | # |
2 | # Copyright (c) 2001-2004 Jakub Jermar |
2 | # Copyright (c) 2001-2004 Jakub Jermar |
3 | # Copyright (c) 2005-2006 Martin Decky |
3 | # Copyright (c) 2005-2006 Martin Decky |
4 | # All rights reserved. |
4 | # All rights reserved. |
5 | # |
5 | # |
6 | # Redistribution and use in source and binary forms, with or without |
6 | # Redistribution and use in source and binary forms, with or without |
7 | # modification, are permitted provided that the following conditions |
7 | # modification, are permitted provided that the following conditions |
8 | # are met: |
8 | # are met: |
9 | # |
9 | # |
10 | # - Redistributions of source code must retain the above copyright |
10 | # - Redistributions of source code must retain the above copyright |
11 | # notice, this list of conditions and the following disclaimer. |
11 | # notice, this list of conditions and the following disclaimer. |
12 | # - Redistributions in binary form must reproduce the above copyright |
12 | # - Redistributions in binary form must reproduce the above copyright |
13 | # notice, this list of conditions and the following disclaimer in the |
13 | # notice, this list of conditions and the following disclaimer in the |
14 | # documentation and/or other materials provided with the distribution. |
14 | # documentation and/or other materials provided with the distribution. |
15 | # - The name of the author may not be used to endorse or promote products |
15 | # - The name of the author may not be used to endorse or promote products |
16 | # derived from this software without specific prior written permission. |
16 | # derived from this software without specific prior written permission. |
17 | # |
17 | # |
18 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
19 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
20 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
21 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
22 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
23 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
24 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
25 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
26 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
27 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
28 | # |
28 | # |
29 | 29 | ||
30 | #include <arch/boot/boot.h> |
30 | #include <arch/boot/boot.h> |
31 | #include <arch/boot/memmap.h> |
31 | #include <arch/boot/memmap.h> |
32 | #include <arch/mm/page.h> |
32 | #include <arch/mm/page.h> |
33 | #include <arch/pm.h> |
33 | #include <arch/pm.h> |
34 | 34 | ||
35 | #define START_STACK (BOOT_OFFSET - BOOT_STACK_SIZE) |
35 | #define START_STACK (BOOT_OFFSET - BOOT_STACK_SIZE) |
36 | 36 | ||
37 | .section K_TEXT_START, "ax" |
37 | .section K_TEXT_START, "ax" |
38 | 38 | ||
39 | .code32 |
39 | .code32 |
40 | .align 4 |
40 | .align 4 |
41 | .global multiboot_image_start |
41 | .global multiboot_image_start |
42 | multiboot_header: |
42 | multiboot_header: |
43 | .long MULTIBOOT_HEADER_MAGIC |
43 | .long MULTIBOOT_HEADER_MAGIC |
44 | .long MULTIBOOT_HEADER_FLAGS |
44 | .long MULTIBOOT_HEADER_FLAGS |
45 | .long -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS) # checksum |
45 | .long -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS) # checksum |
46 | .long multiboot_header |
46 | .long multiboot_header |
47 | .long unmapped_ktext_start |
47 | .long unmapped_ktext_start |
48 | .long 0 |
48 | .long 0 |
49 | .long 0 |
49 | .long 0 |
50 | .long multiboot_image_start |
50 | .long multiboot_image_start |
51 | 51 | ||
52 | multiboot_image_start: |
52 | multiboot_image_start: |
53 | movl $START_STACK, %esp # initialize stack pointer |
53 | movl $START_STACK, %esp # initialize stack pointer |
54 | lgdt KA2PA(bootstrap_gdtr) # initialize Global Descriptor Table register |
54 | lgdt KA2PA(bootstrap_gdtr) # initialize Global Descriptor Table register |
55 | 55 | ||
56 | movw $selector(KDATA_DES), %cx |
56 | movw $selector(KDATA_DES), %cx |
57 | movw %cx, %es |
57 | movw %cx, %es |
58 | movw %cx, %fs |
58 | movw %cx, %fs |
59 | movw %cx, %gs |
59 | movw %cx, %gs |
60 | movw %cx, %ds # kernel data + stack |
60 | movw %cx, %ds # kernel data + stack |
61 | movw %cx, %ss |
61 | movw %cx, %ss |
62 | 62 | ||
63 | jmpl $selector(KTEXT_DES), $multiboot_meeting_point |
63 | jmpl $selector(KTEXT_DES), $multiboot_meeting_point |
64 | multiboot_meeting_point: |
64 | multiboot_meeting_point: |
65 | 65 | ||
66 | pushl %ebx # save parameters from GRUB |
66 | movl %eax, grub_eax # save parameters from GRUB |
- | 67 | movl %ebx, grub_ebx |
|
- | 68 | ||
67 | pushl %eax |
69 | xorl %eax, %eax |
- | 70 | cpuid |
|
- | 71 | cmp $0x0, %eax # any function > 0? |
|
- | 72 | jbe pse_unsupported |
|
- | 73 | movl $0x1, %eax # Basic function code 1 |
|
- | 74 | cpuid |
|
- | 75 | bt $3, %edx # Test if PSE is supported |
|
- | 76 | jc pse_supported |
|
- | 77 | ||
- | 78 | pse_unsupported: |
|
- | 79 | movl $pse_msg, %esi |
|
- | 80 | jmp error_halt |
|
- | 81 | ||
- | 82 | pse_supported: |
|
68 | 83 | ||
69 | #ifdef CONFIG_FB |
84 | #ifdef CONFIG_FB |
70 | mov $vesa_init, %esi |
85 | mov $vesa_init, %esi |
71 | mov $VESA_INIT_SEGMENT << 4, %edi |
86 | mov $VESA_INIT_SEGMENT << 4, %edi |
72 | mov $e_vesa_init - vesa_init, %ecx |
87 | mov $e_vesa_init - vesa_init, %ecx |
73 | cld |
88 | cld |
74 | rep movsb |
89 | rep movsb |
75 | 90 | ||
76 | mov $VESA_INIT_SEGMENT << 4, %edi |
91 | mov $VESA_INIT_SEGMENT << 4, %edi |
77 | jmpl *%edi |
92 | jmpl *%edi |
78 | 93 | ||
79 | vesa_meeting_point: |
94 | vesa_meeting_point: |
80 | 95 | ||
81 | mov %esi, KA2PA(vesa_ph_addr) |
96 | mov %esi, KA2PA(vesa_ph_addr) |
82 | mov %di, KA2PA(vesa_height) |
97 | mov %di, KA2PA(vesa_height) |
83 | shr $16, %edi |
98 | shr $16, %edi |
84 | mov %di, KA2PA(vesa_width) |
99 | mov %di, KA2PA(vesa_width) |
85 | mov %bx, KA2PA(vesa_scanline) |
100 | mov %bx, KA2PA(vesa_scanline) |
86 | shr $16, %ebx |
101 | shr $16, %ebx |
87 | mov %bx, KA2PA(vesa_bpp) |
102 | mov %bx, KA2PA(vesa_bpp) |
88 | #endif |
103 | #endif |
89 | 104 | ||
90 | call map_kernel # map kernel and turn paging on |
105 | call map_kernel # map kernel and turn paging on |
91 | 106 | ||
92 | popl %eax |
107 | movl grub_eax, %eax |
93 | popl %ebx |
108 | movl grub_ebx, %ebx |
94 | cmpl $MULTIBOOT_LOADER_MAGIC, %eax # compare GRUB signature |
109 | cmpl $MULTIBOOT_LOADER_MAGIC, %eax # compare GRUB signature |
95 | je valid_boot |
110 | je valid_boot |
96 | 111 | ||
97 | xorl %ecx, %ecx # no memory size or map available |
112 | xorl %ecx, %ecx # no memory size or map available |
98 | movl %ecx, e801memorysize |
113 | movl %ecx, e801memorysize |
99 | movl %ecx, e820counter |
114 | movl %ecx, e820counter |
100 | 115 | ||
101 | jmp invalid_boot |
116 | jmp invalid_boot |
102 | 117 | ||
103 | valid_boot: |
118 | valid_boot: |
104 | 119 | ||
105 | movl (%ebx), %eax # ebx = physical address of struct multiboot_info |
120 | movl (%ebx), %eax # ebx = physical address of struct multiboot_info |
106 | 121 | ||
107 | bt $0, %eax # mbi->flags[0] (mem_lower, mem_upper valid) |
122 | bt $0, %eax # mbi->flags[0] (mem_lower, mem_upper valid) |
108 | jc mem_valid |
123 | jc mem_valid |
109 | 124 | ||
110 | xorl %ecx, %ecx |
125 | xorl %ecx, %ecx |
111 | jmp mem_invalid |
126 | jmp mem_invalid |
112 | 127 | ||
113 | mem_valid: |
128 | mem_valid: |
114 | movl 4(%ebx), %ecx # mbi->mem_lower |
129 | movl 4(%ebx), %ecx # mbi->mem_lower |
115 | addl 8(%ebx), %ecx # mbi->mem_upper |
130 | addl 8(%ebx), %ecx # mbi->mem_upper |
116 | 131 | ||
117 | mem_invalid: |
132 | mem_invalid: |
118 | movl %ecx, e801memorysize |
133 | movl %ecx, e801memorysize |
119 | 134 | ||
120 | bt $3, %eax # mbi->flags[3] (mods_count, mods_addr valid) |
135 | bt $3, %eax # mbi->flags[3] (mods_count, mods_addr valid) |
121 | jc mods_valid |
136 | jc mods_valid |
122 | 137 | ||
123 | xorl %ecx, %ecx |
138 | xorl %ecx, %ecx |
124 | movl %ecx, init |
139 | movl %ecx, init |
125 | jmp mods_end |
140 | jmp mods_end |
126 | 141 | ||
127 | mods_valid: |
142 | mods_valid: |
128 | 143 | ||
129 | movl 20(%ebx), %ecx # mbi->mods_count |
144 | movl 20(%ebx), %ecx # mbi->mods_count |
130 | movl %ecx, init |
145 | movl %ecx, init |
131 | 146 | ||
132 | cmpl $0, %ecx |
147 | cmpl $0, %ecx |
133 | je mods_end |
148 | je mods_end |
134 | 149 | ||
135 | movl 24(%ebx), %esi # mbi->mods_addr |
150 | movl 24(%ebx), %esi # mbi->mods_addr |
136 | movl $init, %edi |
151 | movl $init, %edi |
137 | 152 | ||
138 | mods_loop: |
153 | mods_loop: |
139 | 154 | ||
140 | movl 0(%esi), %edx # mods->mod_start |
155 | movl 0(%esi), %edx # mods->mod_start |
141 | addl $0x80000000, %edx |
156 | addl $0x80000000, %edx |
142 | movl %edx, 4(%edi) |
157 | movl %edx, 4(%edi) |
143 | 158 | ||
144 | movl 4(%esi), %edx |
159 | movl 4(%esi), %edx |
145 | subl 0(%esi), %edx # mods->mod_end - mods->mod_start |
160 | subl 0(%esi), %edx # mods->mod_end - mods->mod_start |
146 | movl %edx, 8(%edi) |
161 | movl %edx, 8(%edi) |
147 | 162 | ||
148 | addl $16, %esi |
163 | addl $16, %esi |
149 | addl $8 , %edi |
164 | addl $8 , %edi |
150 | 165 | ||
151 | loop mods_loop |
166 | loop mods_loop |
152 | 167 | ||
153 | mods_end: |
168 | mods_end: |
154 | 169 | ||
155 | bt $6, %eax # mbi->flags[6] (mmap_length, mmap_addr valid) |
170 | bt $6, %eax # mbi->flags[6] (mmap_length, mmap_addr valid) |
156 | jc mmap_valid |
171 | jc mmap_valid |
157 | 172 | ||
158 | xorl %edx, %edx |
173 | xorl %edx, %edx |
159 | jmp mmap_invalid |
174 | jmp mmap_invalid |
160 | 175 | ||
161 | mmap_valid: |
176 | mmap_valid: |
162 | movl 44(%ebx), %ecx # mbi->mmap_length |
177 | movl 44(%ebx), %ecx # mbi->mmap_length |
163 | movl 48(%ebx), %esi # mbi->mmap_addr |
178 | movl 48(%ebx), %esi # mbi->mmap_addr |
164 | movl $e820table, %edi |
179 | movl $e820table, %edi |
165 | xorl %edx, %edx |
180 | xorl %edx, %edx |
166 | 181 | ||
167 | mmap_loop: |
182 | mmap_loop: |
168 | cmpl $0, %ecx |
183 | cmpl $0, %ecx |
169 | jle mmap_end |
184 | jle mmap_end |
170 | 185 | ||
171 | movl 4(%esi), %eax # mmap->base_addr_low |
186 | movl 4(%esi), %eax # mmap->base_addr_low |
172 | movl %eax, (%edi) |
187 | movl %eax, (%edi) |
173 | 188 | ||
174 | movl 8(%esi), %eax # mmap->base_addr_high |
189 | movl 8(%esi), %eax # mmap->base_addr_high |
175 | movl %eax, 4(%edi) |
190 | movl %eax, 4(%edi) |
176 | 191 | ||
177 | movl 12(%esi), %eax # mmap->length_low |
192 | movl 12(%esi), %eax # mmap->length_low |
178 | movl %eax, 8(%edi) |
193 | movl %eax, 8(%edi) |
179 | 194 | ||
180 | movl 16(%esi), %eax # mmap->length_high |
195 | movl 16(%esi), %eax # mmap->length_high |
181 | movl %eax, 12(%edi) |
196 | movl %eax, 12(%edi) |
182 | 197 | ||
183 | movl 20(%esi), %eax # mmap->type |
198 | movl 20(%esi), %eax # mmap->type |
184 | movl %eax, 16(%edi) |
199 | movl %eax, 16(%edi) |
185 | 200 | ||
186 | movl (%esi), %eax # mmap->size |
201 | movl (%esi), %eax # mmap->size |
187 | addl $0x4, %eax |
202 | addl $0x4, %eax |
188 | addl %eax, %esi |
203 | addl %eax, %esi |
189 | subl %eax, %ecx |
204 | subl %eax, %ecx |
190 | addl $MEMMAP_E820_RECORD_SIZE, %edi |
205 | addl $MEMMAP_E820_RECORD_SIZE, %edi |
191 | incl %edx |
206 | incl %edx |
192 | jmp mmap_loop |
207 | jmp mmap_loop |
193 | 208 | ||
194 | mmap_end: |
209 | mmap_end: |
195 | 210 | ||
196 | mmap_invalid: |
211 | mmap_invalid: |
197 | movl %edx, e820counter |
212 | movl %edx, e820counter |
198 | 213 | ||
199 | invalid_boot: |
214 | invalid_boot: |
200 | 215 | ||
201 | #ifdef CONFIG_SMP |
216 | #ifdef CONFIG_SMP |
202 | 217 | ||
203 | # copy AP bootstrap routines below 1 MB |
218 | # copy AP bootstrap routines below 1 MB |
204 | 219 | ||
205 | movl $BOOT_OFFSET, %esi |
220 | movl $BOOT_OFFSET, %esi |
206 | movl $AP_BOOT_OFFSET, %edi |
221 | movl $AP_BOOT_OFFSET, %edi |
207 | movl $_hardcoded_unmapped_size, %ecx |
222 | movl $_hardcoded_unmapped_size, %ecx |
208 | cld |
223 | cld |
209 | rep movsb |
224 | rep movsb |
210 | 225 | ||
211 | #endif |
226 | #endif |
212 | 227 | ||
213 | call main_bsp # never returns |
228 | call main_bsp # never returns |
214 | 229 | ||
215 | cli |
230 | cli |
216 | hlt |
231 | hlt |
217 | 232 | ||
218 | .global map_kernel |
233 | .global map_kernel |
219 | map_kernel: |
234 | map_kernel: |
220 | # |
235 | # |
221 | # Here we setup mapping for both the unmapped and mapped sections of the kernel. |
236 | # Here we setup mapping for both the unmapped and mapped sections of the kernel. |
222 | # For simplicity, we map the entire 4G space. |
237 | # For simplicity, we map the entire 4G space. |
223 | # |
238 | # |
224 | movl %cr4, %ecx |
239 | movl %cr4, %ecx |
225 | orl $(1<<4), %ecx |
240 | orl $(1 << 4), %ecx # turn PSE on |
226 | movl %ecx, %cr4 # turn PSE on |
241 | andl $(~(1 << 5)), %ecx # turn PAE off |
- | 242 | movl %ecx, %cr4 |
|
227 | 243 | ||
228 | movl $(page_directory+0), %esi |
244 | movl $(page_directory + 0), %esi |
229 | movl $(page_directory+2048), %edi |
245 | movl $(page_directory + 2048), %edi |
230 | xorl %ecx, %ecx |
246 | xorl %ecx, %ecx |
231 | xorl %ebx, %ebx |
247 | xorl %ebx, %ebx |
232 | 0: |
248 | 0: |
233 | movl $((1<<7)|(1<<0)), %eax |
249 | movl $((1 << 7) | (1 << 1) | (1 << 0)), %eax |
234 | orl %ebx, %eax |
250 | orl %ebx, %eax |
235 | movl %eax, (%esi,%ecx,4) # mapping 0x00000000+%ecx*4M => 0x00000000+%ecx*4M |
251 | movl %eax, (%esi, %ecx, 4) # mapping 0x00000000 + %ecx * 4M => 0x00000000 + %ecx * 4M |
236 | movl %eax, (%edi,%ecx,4) # mapping 0x80000000+%ecx*4M => 0x00000000+%ecx*4M |
252 | movl %eax, (%edi, %ecx, 4) # mapping 0x80000000 + %ecx * 4M => 0x00000000 + %ecx * 4M |
237 | addl $(4*1024*1024), %ebx |
253 | addl $(4 * 1024 * 1024), %ebx |
238 | 254 | ||
239 | incl %ecx |
255 | incl %ecx |
240 | cmpl $512, %ecx |
256 | cmpl $512, %ecx |
241 | jl 0b |
257 | jl 0b |
242 | 258 | ||
243 | movl %esi, %cr3 |
259 | movl %esi, %cr3 |
244 | 260 | ||
245 | # turn paging on |
- | |
246 | movl %cr0, %ebx |
261 | movl %cr0, %ebx |
247 | orl $(1<<31), %ebx |
262 | orl $(1 << 31), %ebx # turn paging on |
248 | movl %ebx, %cr0 |
263 | movl %ebx, %cr0 |
249 | ret |
264 | ret |
250 | 265 | ||
- | 266 | # Print string from %esi to EGA display (in red) and halt |
|
- | 267 | error_halt: |
|
- | 268 | movl $0xb8000, %edi # base of EGA text mode memory |
|
- | 269 | xorl %eax, %eax |
|
- | 270 | ||
- | 271 | movw $0x3d4, %dx # read bits 8 - 15 of the cursor address |
|
- | 272 | movb $0xe, %al |
|
- | 273 | outb %al, %dx |
|
- | 274 | ||
- | 275 | movw $0x3d5, %dx |
|
- | 276 | inb %dx, %al |
|
- | 277 | shl $8, %ax |
|
- | 278 | ||
- | 279 | movw $0x3d4, %dx # read bits 0 - 7 of the cursor address |
|
- | 280 | movb $0xf, %al |
|
- | 281 | outb %al, %dx |
|
- | 282 | ||
- | 283 | movw $0x3d5, %dx |
|
- | 284 | inb %dx, %al |
|
- | 285 | ||
- | 286 | cmp $1920, %ax |
|
- | 287 | jbe cursor_ok |
|
- | 288 | movw $1920, %ax # sanity check for the cursor on the last line |
|
- | 289 | cursor_ok: |
|
- | 290 | ||
- | 291 | movw %ax, %bx |
|
- | 292 | shl $1, %eax |
|
- | 293 | addl %eax, %edi |
|
- | 294 | ||
- | 295 | movw $0x0c00, %ax # black background, light red foreground |
|
- | 296 | cld |
|
- | 297 | ||
- | 298 | ploop: |
|
- | 299 | lodsb |
|
- | 300 | cmp $0, %al |
|
- | 301 | je ploop_end |
|
- | 302 | stosw |
|
- | 303 | inc %bx |
|
- | 304 | jmp ploop |
|
- | 305 | ploop_end: |
|
- | 306 | ||
- | 307 | movw $0x3d4, %dx # write bits 8 - 15 of the cursor address |
|
- | 308 | movb $0xe, %al |
|
- | 309 | outb %al, %dx |
|
- | 310 | ||
- | 311 | movw $0x3d5, %dx |
|
- | 312 | movb %bh, %al |
|
- | 313 | outb %al, %dx |
|
- | 314 | ||
- | 315 | movw $0x3d4, %dx # write bits 0 - 7 of the cursor address |
|
- | 316 | movb $0xf, %al |
|
- | 317 | outb %al, %dx |
|
- | 318 | ||
- | 319 | movw $0x3d5, %dx |
|
- | 320 | movb %bl, %al |
|
- | 321 | outb %al, %dx |
|
- | 322 | ||
- | 323 | cli |
|
- | 324 | hlt |
|
- | 325 | ||
251 | #ifdef CONFIG_FB |
326 | #ifdef CONFIG_FB |
252 | vesa_init: |
327 | vesa_init: |
253 | jmp $selector(VESA_INIT_DES), $vesa_init_real - vesa_init |
328 | jmp $selector(VESA_INIT_DES), $vesa_init_real - vesa_init |
254 | 329 | ||
255 | .code16 |
330 | .code16 |
256 | vesa_init_real: |
331 | vesa_init_real: |
257 | 332 | ||
258 | mov %cr0, %eax |
333 | mov %cr0, %eax |
259 | and $~1, %eax |
334 | and $~1, %eax |
260 | mov %eax, %cr0 |
335 | mov %eax, %cr0 |
261 | 336 | ||
262 | jmp $VESA_INIT_SEGMENT, $vesa_init_real2 - vesa_init |
337 | jmp $VESA_INIT_SEGMENT, $vesa_init_real2 - vesa_init |
263 | 338 | ||
264 | vesa_init_real2: |
339 | vesa_init_real2: |
265 | 340 | ||
266 | mov $VESA_INIT_SEGMENT, %bx |
341 | mov $VESA_INIT_SEGMENT, %bx |
267 | 342 | ||
268 | mov %bx, %es |
343 | mov %bx, %es |
269 | mov %bx, %fs |
344 | mov %bx, %fs |
270 | mov %bx, %gs |
345 | mov %bx, %gs |
271 | mov %bx, %ds |
346 | mov %bx, %ds |
272 | mov %bx, %ss |
347 | mov %bx, %ss |
273 | 348 | ||
274 | movl %esp, %eax |
349 | movl %esp, %eax |
275 | movl $0x0000fffc, %esp |
350 | movl $0x0000fffc, %esp |
276 | movl $0x0000fffc, %ebp |
351 | movl $0x0000fffc, %ebp |
277 | pushl %eax |
352 | pushl %eax |
278 | 353 | ||
279 | #define VESA_INFO_SIZE 1024 |
354 | #define VESA_INFO_SIZE 1024 |
280 | 355 | ||
- | 356 | #define VESA_MODE_ATTRIBUTES_OFFSET 0 |
|
281 | #define VESA_MODE_LIST_PTR_OFFSET 14 |
357 | #define VESA_MODE_LIST_PTR_OFFSET 14 |
- | 358 | #define VESA_MODE_SCANLINE_OFFSET 16 |
|
282 | #define VESA_MODE_WIDTH_OFFSET 18 |
359 | #define VESA_MODE_WIDTH_OFFSET 18 |
283 | #define VESA_MODE_HEIGHT_OFFSET 20 |
360 | #define VESA_MODE_HEIGHT_OFFSET 20 |
284 | #define VESA_MODE_BPP_OFFSET 25 |
361 | #define VESA_MODE_BPP_OFFSET 25 |
285 | #define VESA_MODE_SCANLINE_OFFSET 16 |
- | |
286 | #define VESA_MODE_PHADDR_OFFSET 40 |
362 | #define VESA_MODE_PHADDR_OFFSET 40 |
287 | 363 | ||
288 | #define VESA_END_OF_MODES 0xffff |
364 | #define VESA_END_OF_MODES 0xffff |
289 | 365 | ||
290 | #define VESA_OK 0x4f |
366 | #define VESA_OK 0x4f |
291 | 367 | ||
292 | #define VESA_GET_INFO 0x4f00 |
368 | #define VESA_GET_INFO 0x4f00 |
293 | #define VESA_GET_MODE_INFO 0x4f01 |
369 | #define VESA_GET_MODE_INFO 0x4f01 |
294 | #define VESA_SET_MODE 0x4f02 |
370 | #define VESA_SET_MODE 0x4f02 |
295 | - | ||
296 | #define CONFIG_VESA_BPP_a 255 |
371 | #define VESA_SET_PALETTE 0x4f09 |
297 | 372 | ||
298 | #if CONFIG_VESA_BPP == 24 |
373 | #if CONFIG_VESA_BPP == 24 |
299 | #undef CONFIG_VESA_BPP_a |
- | |
300 | #define CONFIG_VESA_BPP_a 32 |
374 | #define CONFIG_VESA_BPP_VARIANT 32 |
301 | #endif |
375 | #endif |
302 | 376 | ||
303 | mov $VESA_GET_INFO, %ax |
377 | mov $VESA_GET_INFO, %ax |
304 | mov $e_vesa_init - vesa_init, %di |
378 | mov $e_vesa_init - vesa_init, %di |
305 | push %di |
379 | push %di |
306 | int $0x10 |
380 | int $0x10 |
307 | 381 | ||
308 | pop %di |
382 | pop %di |
309 | cmp $VESA_OK, %al |
383 | cmp $VESA_OK, %al |
310 | jnz 0f |
384 | jnz 0f |
311 | 385 | ||
312 | mov 2 + VESA_MODE_LIST_PTR_OFFSET(%di), %si |
386 | mov 2 + VESA_MODE_LIST_PTR_OFFSET(%di), %si |
313 | mov %si, %gs |
387 | mov %si, %gs |
314 | mov VESA_MODE_LIST_PTR_OFFSET(%di), %si |
388 | mov VESA_MODE_LIST_PTR_OFFSET(%di), %si |
315 | 389 | ||
316 | add $VESA_INFO_SIZE, %di |
390 | add $VESA_INFO_SIZE, %di |
317 | 391 | ||
318 | 1:# Try next mode |
392 | 1:# Try next mode |
319 | mov %gs:(%si), %cx |
393 | mov %gs:(%si), %cx |
320 | cmp $VESA_END_OF_MODES, %cx |
394 | cmp $VESA_END_OF_MODES, %cx |
321 | jz 0f |
395 | jz 0f |
322 | 396 | ||
323 | inc %si |
397 | inc %si |
324 | inc %si |
398 | inc %si |
325 | push %cx |
399 | push %cx |
326 | push %di |
400 | push %di |
327 | push %si |
401 | push %si |
328 | mov $VESA_GET_MODE_INFO, %ax |
402 | mov $VESA_GET_MODE_INFO, %ax |
329 | int $0x10 |
403 | int $0x10 |
330 | 404 | ||
331 | pop %si |
405 | pop %si |
332 | pop %di |
406 | pop %di |
333 | pop %cx |
407 | pop %cx |
334 | cmp $VESA_OK, %al |
408 | cmp $VESA_OK, %al |
335 | jnz 0f |
409 | jnz 0f |
336 | 410 | ||
337 | mov $CONFIG_VESA_WIDTH, %ax |
411 | mov $CONFIG_VESA_WIDTH, %ax |
338 | cmp VESA_MODE_WIDTH_OFFSET(%di), %ax |
412 | cmp VESA_MODE_WIDTH_OFFSET(%di), %ax |
339 | jnz 1b |
413 | jnz 1b |
340 | 414 | ||
341 | mov $CONFIG_VESA_HEIGHT,%ax |
415 | mov $CONFIG_VESA_HEIGHT, %ax |
342 | cmp VESA_MODE_HEIGHT_OFFSET(%di), %ax |
416 | cmp VESA_MODE_HEIGHT_OFFSET(%di), %ax |
343 | jnz 1b |
417 | jnz 1b |
344 | 418 | ||
345 | mov $CONFIG_VESA_BPP, %al |
419 | mov $CONFIG_VESA_BPP, %al |
346 | cmp VESA_MODE_BPP_OFFSET(%di), %al |
420 | cmp VESA_MODE_BPP_OFFSET(%di), %al |
- | 421 | ||
- | 422 | #ifdef CONFIG_VESA_BPP_VARIANT |
|
347 | jz 2f |
423 | jz 2f |
348 | 424 | ||
349 | mov $CONFIG_VESA_BPP_a, %al |
425 | mov $CONFIG_VESA_BPP_VARIANT, %al |
350 | cmp VESA_MODE_BPP_OFFSET(%di), %al |
426 | cmp VESA_MODE_BPP_OFFSET(%di), %al |
- | 427 | #endif |
|
351 | jnz 1b |
428 | jnz 1b |
352 | 429 | ||
353 | 2: |
430 | 2: |
354 | 431 | ||
355 | mov %cx, %bx |
432 | mov %cx, %bx |
356 | or $0xc000, %bx |
433 | or $0xc000, %bx |
357 | push %di |
434 | push %di |
358 | mov $VESA_SET_MODE, %ax |
435 | mov $VESA_SET_MODE, %ax |
359 | int $0x10 |
436 | int $0x10 |
360 | 437 | ||
361 | pop %di |
438 | pop %di |
362 | cmp $VESA_OK, %al |
439 | cmp $VESA_OK, %al |
363 | jnz 0f |
440 | jnz 0f |
- | 441 | ||
- | 442 | #if CONFIG_VESA_BPP == 8 |
|
- | 443 | ||
- | 444 | # Set 3:2:3 VGA palette |
|
- | 445 | ||
- | 446 | mov VESA_MODE_ATTRIBUTES_OFFSET(%di), %ax |
|
- | 447 | push %di |
|
- | 448 | mov $vga323 - vesa_init, %di |
|
- | 449 | mov $0x100, %ecx |
|
- | 450 | ||
- | 451 | bt $5, %ax # Test if VGA compatible registers are present |
|
- | 452 | jnc vga_compat |
|
- | 453 | ||
- | 454 | # Try VESA routine to set palette |
|
- | 455 | ||
- | 456 | mov $VESA_SET_PALETTE, %ax |
|
- | 457 | xor %bl, %bl |
|
- | 458 | xor %dx, %dx |
|
- | 459 | int $0x10 |
|
- | 460 | ||
- | 461 | jmp vga_not_compat |
|
- | 462 | ||
- | 463 | vga_compat: |
|
- | 464 | ||
- | 465 | # Try VGA registers to set palette |
|
- | 466 | ||
- | 467 | movw $0x3c6, %dx # Set palette mask |
|
- | 468 | movb $0xff, %al |
|
- | 469 | outb %al, %dx |
|
- | 470 | ||
- | 471 | movw $0x3c8, %dx # First index to set |
|
- | 472 | xor %al, %al |
|
- | 473 | outb %al, %dx |
|
- | 474 | ||
- | 475 | movw $0x3c9, %dx # Data port |
|
- | 476 | vga_loop: |
|
- | 477 | movb %es:2(%di), %al |
|
- | 478 | outb %al, %dx |
|
- | 479 | ||
- | 480 | movb %es:1(%di), %al |
|
- | 481 | outb %al, %dx |
|
- | 482 | ||
- | 483 | movb %es:(%di), %al |
|
- | 484 | outb %al, %dx |
|
- | 485 | ||
- | 486 | addw $4, %di |
|
- | 487 | loop vga_loop |
|
- | 488 | ||
- | 489 | vga_not_compat: |
|
- | 490 | ||
- | 491 | pop %di |
|
- | 492 | ||
- | 493 | #endif |
|
364 | 494 | ||
365 | mov VESA_MODE_PHADDR_OFFSET(%di), %esi |
495 | mov VESA_MODE_PHADDR_OFFSET(%di), %esi |
366 | mov VESA_MODE_WIDTH_OFFSET(%di), %ax |
496 | mov VESA_MODE_WIDTH_OFFSET(%di), %ax |
367 | shl $16, %eax |
497 | shl $16, %eax |
368 | mov VESA_MODE_HEIGHT_OFFSET(%di), %ax |
498 | mov VESA_MODE_HEIGHT_OFFSET(%di), %ax |
369 | mov VESA_MODE_BPP_OFFSET(%di), %bl |
499 | mov VESA_MODE_BPP_OFFSET(%di), %bl |
370 | xor %bh, %bh |
500 | xor %bh, %bh |
371 | shl $16, %ebx |
501 | shl $16, %ebx |
372 | mov VESA_MODE_SCANLINE_OFFSET(%di), %bx |
502 | mov VESA_MODE_SCANLINE_OFFSET(%di), %bx |
373 | mov %eax, %edi |
503 | mov %eax, %edi |
374 | 504 | ||
375 | 8: |
505 | 8: |
376 | 506 | ||
377 | mov %cr0, %eax |
507 | mov %cr0, %eax |
378 | or $1, %eax |
508 | or $1, %eax |
379 | mov %eax, %cr0 |
509 | mov %eax, %cr0 |
380 | 510 | ||
381 | jmp 9f |
511 | jmp 9f |
382 | 9: |
512 | 9: |
383 | 513 | ||
384 | ljmpl $selector(KTEXT_DES), $(vesa_init_protect - vesa_init + VESA_INIT_SEGMENT << 4) |
514 | ljmpl $selector(KTEXT_DES), $(vesa_init_protect - vesa_init + VESA_INIT_SEGMENT << 4) |
385 | 515 | ||
386 | 0:# No prefered mode found |
516 | 0:# No prefered mode found |
387 | mov $0x111, %cx |
517 | mov $0x111, %cx |
388 | push %di |
518 | push %di |
389 | push %cx |
519 | push %cx |
390 | mov $VESA_GET_MODE_INFO, %ax |
520 | mov $VESA_GET_MODE_INFO, %ax |
391 | int $0x10 |
521 | int $0x10 |
392 | 522 | ||
393 | pop %cx |
523 | pop %cx |
394 | pop %di |
524 | pop %di |
395 | cmp $VESA_OK, %al |
525 | cmp $VESA_OK, %al |
396 | jnz 1f |
526 | jnz 1f |
397 | jz 2b # Force relative jump |
527 | jz 2b # Force relative jump |
398 | 528 | ||
399 | 1: |
529 | 1: |
400 | mov $0x0003, %ax |
530 | mov $0x0003, %ax |
401 | int $0x10 |
531 | int $0x10 |
402 | mov $0xffffffff, %edi # EGA text mode used, because of problems with VESA |
532 | mov $0xffffffff, %edi # EGA text mode used, because of problems with VESA |
403 | xor %ax, %ax |
533 | xor %ax, %ax |
404 | jz 8b # Force relative jump |
534 | jz 8b # Force relative jump |
405 | 535 | ||
- | 536 | vga323: |
|
- | 537 | #include "vga323.pal" |
|
406 | 538 | ||
407 | .code32 |
539 | .code32 |
408 | vesa_init_protect: |
540 | vesa_init_protect: |
409 | popl %esp |
- | |
410 | - | ||
411 | movw $selector(KDATA_DES), %cx |
541 | movw $selector(KDATA_DES), %cx |
412 | movw %cx, %es |
542 | movw %cx, %es |
413 | movw %cx, %fs |
543 | movw %cx, %fs |
414 | movw %cx, %gs |
544 | movw %cx, %gs |
415 | movw %cx, %ds # kernel data + stack |
545 | movw %cx, %ds # kernel data + stack |
416 | movw %cx, %ss |
546 | movw %cx, %ss |
417 | 547 | ||
- | 548 | movl $START_STACK, %esp # initialize stack pointer |
|
- | 549 | ||
418 | jmpl $selector(KTEXT_DES), $vesa_meeting_point |
550 | jmpl $selector(KTEXT_DES), $vesa_meeting_point |
419 | 551 | ||
420 | .align 4 |
552 | .align 4 |
421 | e_vesa_init: |
553 | e_vesa_init: |
422 | #endif |
554 | #endif |
423 | 555 | ||
424 | .section K_DATA_START, "aw", @progbits |
556 | .section K_DATA_START, "aw", @progbits |
425 | 557 | ||
426 | .align 4096 |
558 | .align 4096 |
427 | page_directory: |
559 | page_directory: |
428 | .space 4096, 0 |
560 | .space 4096, 0 |
- | 561 | ||
- | 562 | grub_eax: |
|
- | 563 | .long 0 |
|
- | 564 | ||
- | 565 | grub_ebx: |
|
- | 566 | .long 0 |
|
- | 567 | ||
- | 568 | pse_msg: |
|
- | 569 | .asciz "Page Size Extension not supported. System halted." |
|
429 | 570 |