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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 | cld |
53 | cld |
54 | movl $START_STACK, %esp # initialize stack pointer |
54 | movl $START_STACK, %esp # initialize stack pointer |
55 | lgdt KA2PA(bootstrap_gdtr) # initialize Global Descriptor Table register |
55 | lgdt KA2PA(bootstrap_gdtr) # initialize Global Descriptor Table register |
56 | 56 | ||
57 | movw $selector(KDATA_DES), %cx |
57 | movw $selector(KDATA_DES), %cx |
58 | movw %cx, %es |
58 | movw %cx, %es |
59 | movw %cx, %fs |
59 | movw %cx, %fs |
60 | movw %cx, %gs |
60 | movw %cx, %gs |
61 | movw %cx, %ds # kernel data + stack |
61 | movw %cx, %ds # kernel data + stack |
62 | movw %cx, %ss |
62 | movw %cx, %ss |
63 | 63 | ||
64 | jmpl $selector(KTEXT_DES), $multiboot_meeting_point |
64 | jmpl $selector(KTEXT_DES), $multiboot_meeting_point |
65 | multiboot_meeting_point: |
65 | multiboot_meeting_point: |
66 | 66 | ||
67 | movl %eax, grub_eax # save parameters from GRUB |
67 | movl %eax, grub_eax # save parameters from GRUB |
68 | movl %ebx, grub_ebx |
68 | movl %ebx, grub_ebx |
69 | 69 | ||
70 | xorl %eax, %eax |
70 | xorl %eax, %eax |
71 | cpuid |
71 | cpuid |
72 | cmp $0x0, %eax # any function > 0? |
72 | cmp $0x0, %eax # any function > 0? |
73 | jbe pse_unsupported |
73 | jbe pse_unsupported |
74 | movl $0x1, %eax # Basic function code 1 |
74 | movl $0x1, %eax # Basic function code 1 |
75 | cpuid |
75 | cpuid |
76 | bt $3, %edx # Test if PSE is supported |
76 | bt $3, %edx # Test if PSE is supported |
77 | jc pse_supported |
77 | jc pse_supported |
78 | 78 | ||
79 | pse_unsupported: |
79 | pse_unsupported: |
80 | movl $pse_msg, %esi |
80 | movl $pse_msg, %esi |
81 | jmp error_halt |
81 | jmp error_halt |
82 | 82 | ||
83 | pse_supported: |
83 | pse_supported: |
84 | 84 | ||
85 | #ifdef CONFIG_FB |
85 | #ifdef CONFIG_FB |
86 | mov $vesa_init, %esi |
86 | mov $vesa_init, %esi |
87 | mov $VESA_INIT_SEGMENT << 4, %edi |
87 | mov $VESA_INIT_SEGMENT << 4, %edi |
88 | mov $e_vesa_init - vesa_init, %ecx |
88 | mov $e_vesa_init - vesa_init, %ecx |
89 | rep movsb |
89 | rep movsb |
90 | 90 | ||
91 | mov $VESA_INIT_SEGMENT << 4, %edi |
91 | mov $VESA_INIT_SEGMENT << 4, %edi |
92 | jmpl *%edi |
92 | jmpl *%edi |
93 | 93 | ||
94 | vesa_meeting_point: |
94 | vesa_meeting_point: |
95 | 95 | ||
96 | mov %esi, KA2PA(vesa_ph_addr) |
96 | mov %esi, KA2PA(vesa_ph_addr) |
97 | mov %di, KA2PA(vesa_height) |
97 | mov %di, KA2PA(vesa_height) |
98 | shr $16, %edi |
98 | shr $16, %edi |
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 | 106 | ||
107 | # ia32_cboot(grub_eax, grub_ebx) |
107 | # arch_pre_main(grub_eax, grub_ebx) |
108 | pushl grub_ebx |
108 | pushl grub_ebx |
109 | pushl grub_eax |
109 | pushl grub_eax |
110 | call ia32_cboot # Does not return. |
110 | call arch_pre_main |
111 | 111 | ||
- | 112 | call main_bsp |
|
- | 113 | ||
112 | # Not reached. |
114 | # Not reached. |
113 | 115 | ||
114 | cli |
116 | cli |
115 | hlt |
117 | hlt |
116 | 118 | ||
117 | .global map_kernel |
119 | .global map_kernel |
118 | map_kernel: |
120 | map_kernel: |
119 | # |
121 | # |
120 | # Here we setup mapping for both the unmapped and mapped sections of the kernel. |
122 | # Here we setup mapping for both the unmapped and mapped sections of the kernel. |
121 | # For simplicity, we map the entire 4G space. |
123 | # For simplicity, we map the entire 4G space. |
122 | # |
124 | # |
123 | movl %cr4, %ecx |
125 | movl %cr4, %ecx |
124 | orl $(1 << 4), %ecx # turn PSE on |
126 | orl $(1 << 4), %ecx # turn PSE on |
125 | andl $(~(1 << 5)), %ecx # turn PAE off |
127 | andl $(~(1 << 5)), %ecx # turn PAE off |
126 | movl %ecx, %cr4 |
128 | movl %ecx, %cr4 |
127 | 129 | ||
128 | movl $(page_directory + 0), %esi |
130 | movl $(page_directory + 0), %esi |
129 | movl $(page_directory + 2048), %edi |
131 | movl $(page_directory + 2048), %edi |
130 | xorl %ecx, %ecx |
132 | xorl %ecx, %ecx |
131 | xorl %ebx, %ebx |
133 | xorl %ebx, %ebx |
132 | 0: |
134 | 0: |
133 | movl $((1 << 7) | (1 << 1) | (1 << 0)), %eax |
135 | movl $((1 << 7) | (1 << 1) | (1 << 0)), %eax |
134 | orl %ebx, %eax |
136 | orl %ebx, %eax |
135 | movl %eax, (%esi, %ecx, 4) # mapping 0x00000000 + %ecx * 4M => 0x00000000 + %ecx * 4M |
137 | movl %eax, (%esi, %ecx, 4) # mapping 0x00000000 + %ecx * 4M => 0x00000000 + %ecx * 4M |
136 | movl %eax, (%edi, %ecx, 4) # mapping 0x80000000 + %ecx * 4M => 0x00000000 + %ecx * 4M |
138 | movl %eax, (%edi, %ecx, 4) # mapping 0x80000000 + %ecx * 4M => 0x00000000 + %ecx * 4M |
137 | addl $(4 * 1024 * 1024), %ebx |
139 | addl $(4 * 1024 * 1024), %ebx |
138 | 140 | ||
139 | incl %ecx |
141 | incl %ecx |
140 | cmpl $512, %ecx |
142 | cmpl $512, %ecx |
141 | jl 0b |
143 | jl 0b |
142 | 144 | ||
143 | movl %esi, %cr3 |
145 | movl %esi, %cr3 |
144 | 146 | ||
145 | movl %cr0, %ebx |
147 | movl %cr0, %ebx |
146 | orl $(1 << 31), %ebx # turn paging on |
148 | orl $(1 << 31), %ebx # turn paging on |
147 | movl %ebx, %cr0 |
149 | movl %ebx, %cr0 |
148 | ret |
150 | ret |
149 | 151 | ||
150 | # Print string from %esi to EGA display (in red) and halt |
152 | # Print string from %esi to EGA display (in red) and halt |
151 | error_halt: |
153 | error_halt: |
152 | movl $0xb8000, %edi # base of EGA text mode memory |
154 | movl $0xb8000, %edi # base of EGA text mode memory |
153 | xorl %eax, %eax |
155 | xorl %eax, %eax |
154 | 156 | ||
155 | movw $0x3d4, %dx # read bits 8 - 15 of the cursor address |
157 | movw $0x3d4, %dx # read bits 8 - 15 of the cursor address |
156 | movb $0xe, %al |
158 | movb $0xe, %al |
157 | outb %al, %dx |
159 | outb %al, %dx |
158 | 160 | ||
159 | movw $0x3d5, %dx |
161 | movw $0x3d5, %dx |
160 | inb %dx, %al |
162 | inb %dx, %al |
161 | shl $8, %ax |
163 | shl $8, %ax |
162 | 164 | ||
163 | movw $0x3d4, %dx # read bits 0 - 7 of the cursor address |
165 | movw $0x3d4, %dx # read bits 0 - 7 of the cursor address |
164 | movb $0xf, %al |
166 | movb $0xf, %al |
165 | outb %al, %dx |
167 | outb %al, %dx |
166 | 168 | ||
167 | movw $0x3d5, %dx |
169 | movw $0x3d5, %dx |
168 | inb %dx, %al |
170 | inb %dx, %al |
169 | 171 | ||
170 | cmp $1920, %ax |
172 | cmp $1920, %ax |
171 | jbe cursor_ok |
173 | jbe cursor_ok |
172 | movw $1920, %ax # sanity check for the cursor on the last line |
174 | movw $1920, %ax # sanity check for the cursor on the last line |
173 | cursor_ok: |
175 | cursor_ok: |
174 | 176 | ||
175 | movw %ax, %bx |
177 | movw %ax, %bx |
176 | shl $1, %eax |
178 | shl $1, %eax |
177 | addl %eax, %edi |
179 | addl %eax, %edi |
178 | 180 | ||
179 | movw $0x0c00, %ax # black background, light red foreground |
181 | movw $0x0c00, %ax # black background, light red foreground |
180 | 182 | ||
181 | ploop: |
183 | ploop: |
182 | lodsb |
184 | lodsb |
183 | cmp $0, %al |
185 | cmp $0, %al |
184 | je ploop_end |
186 | je ploop_end |
185 | stosw |
187 | stosw |
186 | inc %bx |
188 | inc %bx |
187 | jmp ploop |
189 | jmp ploop |
188 | ploop_end: |
190 | ploop_end: |
189 | 191 | ||
190 | movw $0x3d4, %dx # write bits 8 - 15 of the cursor address |
192 | movw $0x3d4, %dx # write bits 8 - 15 of the cursor address |
191 | movb $0xe, %al |
193 | movb $0xe, %al |
192 | outb %al, %dx |
194 | outb %al, %dx |
193 | 195 | ||
194 | movw $0x3d5, %dx |
196 | movw $0x3d5, %dx |
195 | movb %bh, %al |
197 | movb %bh, %al |
196 | outb %al, %dx |
198 | outb %al, %dx |
197 | 199 | ||
198 | movw $0x3d4, %dx # write bits 0 - 7 of the cursor address |
200 | movw $0x3d4, %dx # write bits 0 - 7 of the cursor address |
199 | movb $0xf, %al |
201 | movb $0xf, %al |
200 | outb %al, %dx |
202 | outb %al, %dx |
201 | 203 | ||
202 | movw $0x3d5, %dx |
204 | movw $0x3d5, %dx |
203 | movb %bl, %al |
205 | movb %bl, %al |
204 | outb %al, %dx |
206 | outb %al, %dx |
205 | 207 | ||
206 | cli |
208 | cli |
207 | hlt |
209 | hlt |
208 | 210 | ||
209 | #ifdef CONFIG_FB |
211 | #ifdef CONFIG_FB |
210 | vesa_init: |
212 | vesa_init: |
211 | jmp $selector(VESA_INIT_DES), $vesa_init_real - vesa_init |
213 | jmp $selector(VESA_INIT_DES), $vesa_init_real - vesa_init |
212 | 214 | ||
213 | .code16 |
215 | .code16 |
214 | vesa_init_real: |
216 | vesa_init_real: |
215 | 217 | ||
216 | mov %cr0, %eax |
218 | mov %cr0, %eax |
217 | and $~1, %eax |
219 | and $~1, %eax |
218 | mov %eax, %cr0 |
220 | mov %eax, %cr0 |
219 | 221 | ||
220 | jmp $VESA_INIT_SEGMENT, $vesa_init_real2 - vesa_init |
222 | jmp $VESA_INIT_SEGMENT, $vesa_init_real2 - vesa_init |
221 | 223 | ||
222 | vesa_init_real2: |
224 | vesa_init_real2: |
223 | 225 | ||
224 | mov $VESA_INIT_SEGMENT, %bx |
226 | mov $VESA_INIT_SEGMENT, %bx |
225 | 227 | ||
226 | mov %bx, %es |
228 | mov %bx, %es |
227 | mov %bx, %fs |
229 | mov %bx, %fs |
228 | mov %bx, %gs |
230 | mov %bx, %gs |
229 | mov %bx, %ds |
231 | mov %bx, %ds |
230 | mov %bx, %ss |
232 | mov %bx, %ss |
231 | 233 | ||
232 | movl %esp, %eax |
234 | movl %esp, %eax |
233 | movl $0x0000fffc, %esp |
235 | movl $0x0000fffc, %esp |
234 | movl $0x0000fffc, %ebp |
236 | movl $0x0000fffc, %ebp |
235 | pushl %eax |
237 | pushl %eax |
236 | 238 | ||
237 | #define VESA_INFO_SIZE 1024 |
239 | #define VESA_INFO_SIZE 1024 |
238 | 240 | ||
239 | #define VESA_MODE_ATTRIBUTES_OFFSET 0 |
241 | #define VESA_MODE_ATTRIBUTES_OFFSET 0 |
240 | #define VESA_MODE_LIST_PTR_OFFSET 14 |
242 | #define VESA_MODE_LIST_PTR_OFFSET 14 |
241 | #define VESA_MODE_SCANLINE_OFFSET 16 |
243 | #define VESA_MODE_SCANLINE_OFFSET 16 |
242 | #define VESA_MODE_WIDTH_OFFSET 18 |
244 | #define VESA_MODE_WIDTH_OFFSET 18 |
243 | #define VESA_MODE_HEIGHT_OFFSET 20 |
245 | #define VESA_MODE_HEIGHT_OFFSET 20 |
244 | #define VESA_MODE_BPP_OFFSET 25 |
246 | #define VESA_MODE_BPP_OFFSET 25 |
245 | #define VESA_MODE_PHADDR_OFFSET 40 |
247 | #define VESA_MODE_PHADDR_OFFSET 40 |
246 | 248 | ||
247 | #define VESA_END_OF_MODES 0xffff |
249 | #define VESA_END_OF_MODES 0xffff |
248 | 250 | ||
249 | #define VESA_OK 0x4f |
251 | #define VESA_OK 0x4f |
250 | 252 | ||
251 | #define VESA_GET_INFO 0x4f00 |
253 | #define VESA_GET_INFO 0x4f00 |
252 | #define VESA_GET_MODE_INFO 0x4f01 |
254 | #define VESA_GET_MODE_INFO 0x4f01 |
253 | #define VESA_SET_MODE 0x4f02 |
255 | #define VESA_SET_MODE 0x4f02 |
254 | #define VESA_SET_PALETTE 0x4f09 |
256 | #define VESA_SET_PALETTE 0x4f09 |
255 | 257 | ||
256 | #if CONFIG_VESA_BPP == 24 |
258 | #if CONFIG_VESA_BPP == 24 |
257 | #define CONFIG_VESA_BPP_VARIANT 32 |
259 | #define CONFIG_VESA_BPP_VARIANT 32 |
258 | #endif |
260 | #endif |
259 | 261 | ||
260 | mov $VESA_GET_INFO, %ax |
262 | mov $VESA_GET_INFO, %ax |
261 | mov $e_vesa_init - vesa_init, %di |
263 | mov $e_vesa_init - vesa_init, %di |
262 | push %di |
264 | push %di |
263 | int $0x10 |
265 | int $0x10 |
264 | 266 | ||
265 | pop %di |
267 | pop %di |
266 | cmp $VESA_OK, %al |
268 | cmp $VESA_OK, %al |
267 | jnz 0f |
269 | jnz 0f |
268 | 270 | ||
269 | mov 2 + VESA_MODE_LIST_PTR_OFFSET(%di), %si |
271 | mov 2 + VESA_MODE_LIST_PTR_OFFSET(%di), %si |
270 | mov %si, %gs |
272 | mov %si, %gs |
271 | mov VESA_MODE_LIST_PTR_OFFSET(%di), %si |
273 | mov VESA_MODE_LIST_PTR_OFFSET(%di), %si |
272 | 274 | ||
273 | add $VESA_INFO_SIZE, %di |
275 | add $VESA_INFO_SIZE, %di |
274 | 276 | ||
275 | 1:# Try next mode |
277 | 1:# Try next mode |
276 | mov %gs:(%si), %cx |
278 | mov %gs:(%si), %cx |
277 | cmp $VESA_END_OF_MODES, %cx |
279 | cmp $VESA_END_OF_MODES, %cx |
278 | jz 0f |
280 | jz 0f |
279 | 281 | ||
280 | inc %si |
282 | inc %si |
281 | inc %si |
283 | inc %si |
282 | push %cx |
284 | push %cx |
283 | push %di |
285 | push %di |
284 | push %si |
286 | push %si |
285 | mov $VESA_GET_MODE_INFO, %ax |
287 | mov $VESA_GET_MODE_INFO, %ax |
286 | int $0x10 |
288 | int $0x10 |
287 | 289 | ||
288 | pop %si |
290 | pop %si |
289 | pop %di |
291 | pop %di |
290 | pop %cx |
292 | pop %cx |
291 | cmp $VESA_OK, %al |
293 | cmp $VESA_OK, %al |
292 | jnz 0f |
294 | jnz 0f |
293 | 295 | ||
294 | mov $CONFIG_VESA_WIDTH, %ax |
296 | mov $CONFIG_VESA_WIDTH, %ax |
295 | cmp VESA_MODE_WIDTH_OFFSET(%di), %ax |
297 | cmp VESA_MODE_WIDTH_OFFSET(%di), %ax |
296 | jnz 1b |
298 | jnz 1b |
297 | 299 | ||
298 | mov $CONFIG_VESA_HEIGHT, %ax |
300 | mov $CONFIG_VESA_HEIGHT, %ax |
299 | cmp VESA_MODE_HEIGHT_OFFSET(%di), %ax |
301 | cmp VESA_MODE_HEIGHT_OFFSET(%di), %ax |
300 | jnz 1b |
302 | jnz 1b |
301 | 303 | ||
302 | mov $CONFIG_VESA_BPP, %al |
304 | mov $CONFIG_VESA_BPP, %al |
303 | cmp VESA_MODE_BPP_OFFSET(%di), %al |
305 | cmp VESA_MODE_BPP_OFFSET(%di), %al |
304 | 306 | ||
305 | #ifdef CONFIG_VESA_BPP_VARIANT |
307 | #ifdef CONFIG_VESA_BPP_VARIANT |
306 | jz 2f |
308 | jz 2f |
307 | 309 | ||
308 | mov $CONFIG_VESA_BPP_VARIANT, %al |
310 | mov $CONFIG_VESA_BPP_VARIANT, %al |
309 | cmp VESA_MODE_BPP_OFFSET(%di), %al |
311 | cmp VESA_MODE_BPP_OFFSET(%di), %al |
310 | #endif |
312 | #endif |
311 | jnz 1b |
313 | jnz 1b |
312 | 314 | ||
313 | 2: |
315 | 2: |
314 | 316 | ||
315 | mov %cx, %bx |
317 | mov %cx, %bx |
316 | or $0xc000, %bx |
318 | or $0xc000, %bx |
317 | push %di |
319 | push %di |
318 | mov $VESA_SET_MODE, %ax |
320 | mov $VESA_SET_MODE, %ax |
319 | int $0x10 |
321 | int $0x10 |
320 | 322 | ||
321 | pop %di |
323 | pop %di |
322 | cmp $VESA_OK, %al |
324 | cmp $VESA_OK, %al |
323 | jnz 0f |
325 | jnz 0f |
324 | 326 | ||
325 | #if CONFIG_VESA_BPP == 8 |
327 | #if CONFIG_VESA_BPP == 8 |
326 | 328 | ||
327 | # Set 3:2:3 VGA palette |
329 | # Set 3:2:3 VGA palette |
328 | 330 | ||
329 | mov VESA_MODE_ATTRIBUTES_OFFSET(%di), %ax |
331 | mov VESA_MODE_ATTRIBUTES_OFFSET(%di), %ax |
330 | push %di |
332 | push %di |
331 | mov $vga323 - vesa_init, %di |
333 | mov $vga323 - vesa_init, %di |
332 | mov $0x100, %ecx |
334 | mov $0x100, %ecx |
333 | 335 | ||
334 | bt $5, %ax # Test if VGA compatible registers are present |
336 | bt $5, %ax # Test if VGA compatible registers are present |
335 | jnc vga_compat |
337 | jnc vga_compat |
336 | 338 | ||
337 | # Try VESA routine to set palette |
339 | # Try VESA routine to set palette |
338 | 340 | ||
339 | mov $VESA_SET_PALETTE, %ax |
341 | mov $VESA_SET_PALETTE, %ax |
340 | xor %bl, %bl |
342 | xor %bl, %bl |
341 | xor %dx, %dx |
343 | xor %dx, %dx |
342 | int $0x10 |
344 | int $0x10 |
343 | 345 | ||
344 | cmp $0x00, %ah |
346 | cmp $0x00, %ah |
345 | je vga_not_compat |
347 | je vga_not_compat |
346 | 348 | ||
347 | vga_compat: |
349 | vga_compat: |
348 | 350 | ||
349 | # Try VGA registers to set palette |
351 | # Try VGA registers to set palette |
350 | 352 | ||
351 | movw $0x3c6, %dx # Set palette mask |
353 | movw $0x3c6, %dx # Set palette mask |
352 | movb $0xff, %al |
354 | movb $0xff, %al |
353 | outb %al, %dx |
355 | outb %al, %dx |
354 | 356 | ||
355 | movw $0x3c8, %dx # First index to set |
357 | movw $0x3c8, %dx # First index to set |
356 | xor %al, %al |
358 | xor %al, %al |
357 | outb %al, %dx |
359 | outb %al, %dx |
358 | 360 | ||
359 | movw $0x3c9, %dx # Data port |
361 | movw $0x3c9, %dx # Data port |
360 | vga_loop: |
362 | vga_loop: |
361 | movb %es:2(%di), %al |
363 | movb %es:2(%di), %al |
362 | outb %al, %dx |
364 | outb %al, %dx |
363 | 365 | ||
364 | movb %es:1(%di), %al |
366 | movb %es:1(%di), %al |
365 | outb %al, %dx |
367 | outb %al, %dx |
366 | 368 | ||
367 | movb %es:(%di), %al |
369 | movb %es:(%di), %al |
368 | outb %al, %dx |
370 | outb %al, %dx |
369 | 371 | ||
370 | addw $4, %di |
372 | addw $4, %di |
371 | loop vga_loop |
373 | loop vga_loop |
372 | 374 | ||
373 | vga_not_compat: |
375 | vga_not_compat: |
374 | 376 | ||
375 | pop %di |
377 | pop %di |
376 | 378 | ||
377 | #endif |
379 | #endif |
378 | 380 | ||
379 | mov VESA_MODE_PHADDR_OFFSET(%di), %esi |
381 | mov VESA_MODE_PHADDR_OFFSET(%di), %esi |
380 | mov VESA_MODE_WIDTH_OFFSET(%di), %ax |
382 | mov VESA_MODE_WIDTH_OFFSET(%di), %ax |
381 | shl $16, %eax |
383 | shl $16, %eax |
382 | mov VESA_MODE_HEIGHT_OFFSET(%di), %ax |
384 | mov VESA_MODE_HEIGHT_OFFSET(%di), %ax |
383 | mov VESA_MODE_BPP_OFFSET(%di), %bl |
385 | mov VESA_MODE_BPP_OFFSET(%di), %bl |
384 | xor %bh, %bh |
386 | xor %bh, %bh |
385 | shl $16, %ebx |
387 | shl $16, %ebx |
386 | mov VESA_MODE_SCANLINE_OFFSET(%di), %bx |
388 | mov VESA_MODE_SCANLINE_OFFSET(%di), %bx |
387 | mov %eax, %edi |
389 | mov %eax, %edi |
388 | 390 | ||
389 | 8: |
391 | 8: |
390 | 392 | ||
391 | mov %cr0, %eax |
393 | mov %cr0, %eax |
392 | or $1, %eax |
394 | or $1, %eax |
393 | mov %eax, %cr0 |
395 | mov %eax, %cr0 |
394 | 396 | ||
395 | jmp 9f |
397 | jmp 9f |
396 | 9: |
398 | 9: |
397 | 399 | ||
398 | ljmpl $selector(KTEXT_DES), $(vesa_init_protect - vesa_init + VESA_INIT_SEGMENT << 4) |
400 | ljmpl $selector(KTEXT_DES), $(vesa_init_protect - vesa_init + VESA_INIT_SEGMENT << 4) |
399 | 401 | ||
400 | 0:# No prefered mode found |
402 | 0:# No prefered mode found |
401 | mov $0x111, %cx |
403 | mov $0x111, %cx |
402 | push %di |
404 | push %di |
403 | push %cx |
405 | push %cx |
404 | mov $VESA_GET_MODE_INFO, %ax |
406 | mov $VESA_GET_MODE_INFO, %ax |
405 | int $0x10 |
407 | int $0x10 |
406 | 408 | ||
407 | pop %cx |
409 | pop %cx |
408 | pop %di |
410 | pop %di |
409 | cmp $VESA_OK, %al |
411 | cmp $VESA_OK, %al |
410 | jnz 1f |
412 | jnz 1f |
411 | jz 2b # Force relative jump |
413 | jz 2b # Force relative jump |
412 | 414 | ||
413 | 1: |
415 | 1: |
414 | mov $0x0003, %ax |
416 | mov $0x0003, %ax |
415 | int $0x10 |
417 | int $0x10 |
416 | mov $0xffffffff, %edi # EGA text mode used, because of problems with VESA |
418 | mov $0xffffffff, %edi # EGA text mode used, because of problems with VESA |
417 | xor %ax, %ax |
419 | xor %ax, %ax |
418 | jz 8b # Force relative jump |
420 | jz 8b # Force relative jump |
419 | 421 | ||
420 | vga323: |
422 | vga323: |
421 | #include "vga323.pal" |
423 | #include "vga323.pal" |
422 | 424 | ||
423 | .code32 |
425 | .code32 |
424 | vesa_init_protect: |
426 | vesa_init_protect: |
425 | movw $selector(KDATA_DES), %cx |
427 | movw $selector(KDATA_DES), %cx |
426 | movw %cx, %es |
428 | movw %cx, %es |
427 | movw %cx, %fs |
429 | movw %cx, %fs |
428 | movw %cx, %gs |
430 | movw %cx, %gs |
429 | movw %cx, %ds # kernel data + stack |
431 | movw %cx, %ds # kernel data + stack |
430 | movw %cx, %ss |
432 | movw %cx, %ss |
431 | 433 | ||
432 | movl $START_STACK, %esp # initialize stack pointer |
434 | movl $START_STACK, %esp # initialize stack pointer |
433 | 435 | ||
434 | jmpl $selector(KTEXT_DES), $vesa_meeting_point |
436 | jmpl $selector(KTEXT_DES), $vesa_meeting_point |
435 | 437 | ||
436 | .align 4 |
438 | .align 4 |
437 | e_vesa_init: |
439 | e_vesa_init: |
438 | #endif |
440 | #endif |
439 | 441 | ||
440 | .section K_DATA_START, "aw", @progbits |
442 | .section K_DATA_START, "aw", @progbits |
441 | 443 | ||
442 | .align 4096 |
444 | .align 4096 |
443 | page_directory: |
445 | page_directory: |
444 | .space 4096, 0 |
446 | .space 4096, 0 |
445 | 447 | ||
446 | grub_eax: |
448 | grub_eax: |
447 | .long 0 |
449 | .long 0 |
448 | 450 | ||
449 | grub_ebx: |
451 | grub_ebx: |
450 | .long 0 |
452 | .long 0 |
451 | 453 | ||
452 | pse_msg: |
454 | pse_msg: |
453 | .asciz "Page Size Extension not supported. System halted." |
455 | .asciz "Page Size Extension not supported. System halted." |
454 | 456 |