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1 | # |
1 | # |
2 | # Copyright (C) 2005 Ondrej Palkovsky |
2 | # Copyright (C) 2005 Ondrej Palkovsky |
3 | # Copyright (C) 2006 Martin Decky |
3 | # Copyright (C) 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/mm/ptl.h> |
33 | #include <arch/mm/ptl.h> |
34 | #include <arch/pm.h> |
34 | #include <arch/pm.h> |
35 | #include <arch/cpu.h> |
35 | #include <arch/cpu.h> |
36 | #include <arch/cpuid.h> |
36 | #include <arch/cpuid.h> |
37 | 37 | ||
38 | #define START_STACK (BOOT_OFFSET - BOOT_STACK_SIZE) |
38 | #define START_STACK (BOOT_OFFSET - BOOT_STACK_SIZE) |
39 | 39 | ||
40 | .section K_TEXT_START, "ax" |
40 | .section K_TEXT_START, "ax" |
41 | 41 | ||
42 | .code32 |
42 | .code32 |
43 | .align 4 |
43 | .align 4 |
44 | .global multiboot_image_start |
44 | .global multiboot_image_start |
45 | multiboot_header: |
45 | multiboot_header: |
46 | .long MULTIBOOT_HEADER_MAGIC |
46 | .long MULTIBOOT_HEADER_MAGIC |
47 | .long MULTIBOOT_HEADER_FLAGS |
47 | .long MULTIBOOT_HEADER_FLAGS |
48 | .long -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS) # checksum |
48 | .long -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS) # checksum |
49 | .long multiboot_header |
49 | .long multiboot_header |
50 | .long unmapped_ktext_start |
50 | .long unmapped_ktext_start |
51 | .long 0 |
51 | .long 0 |
52 | .long 0 |
52 | .long 0 |
53 | .long multiboot_image_start |
53 | .long multiboot_image_start |
54 | 54 | ||
55 | multiboot_image_start: |
55 | multiboot_image_start: |
56 | movl $START_STACK, %esp # initialize stack pointer |
56 | movl $START_STACK, %esp # initialize stack pointer |
57 | lgdt bootstrap_gdtr # initialize Global Descriptor Table register |
57 | lgdt bootstrap_gdtr # initialize Global Descriptor Table register |
58 | 58 | ||
59 | movw $gdtselector(KDATA_DES), %cx |
59 | movw $gdtselector(KDATA_DES), %cx |
60 | movw %cx, %es |
60 | movw %cx, %es |
61 | movw %cx, %ds # kernel data + stack |
61 | movw %cx, %ds # kernel data + stack |
62 | movw %cx, %ss |
62 | movw %cx, %ss |
63 | # Simics seems to remove hidden part of GS on entering user mode |
63 | # Simics seems to remove hidden part of GS on entering user mode |
64 | # when _visible_ part of GS does not point to user-mode segment |
64 | # when _visible_ part of GS does not point to user-mode segment |
65 | movw $gdtselector(UDATA_DES), %cx |
65 | movw $gdtselector(UDATA_DES), %cx |
66 | movw %cx, %fs |
66 | movw %cx, %fs |
67 | movw %cx, %gs |
67 | movw %cx, %gs |
68 | 68 | ||
69 | jmpl $gdtselector(KTEXT32_DES), $multiboot_meeting_point |
69 | jmpl $gdtselector(KTEXT32_DES), $multiboot_meeting_point |
70 | multiboot_meeting_point: |
70 | multiboot_meeting_point: |
71 | 71 | ||
72 | movl %eax, grub_eax # save parameters from GRUB |
72 | movl %eax, grub_eax # save parameters from GRUB |
73 | movl %ebx, grub_ebx |
73 | movl %ebx, grub_ebx |
74 | 74 | ||
- | 75 | #ifdef CONFIG_FB |
|
- | 76 | mov $vesa_init,%esi; |
|
- | 77 | mov $VESA_INIT_SEGMENT<<4,%edi; |
|
- | 78 | mov $e_vesa_init-vesa_init,%ecx; |
|
- | 79 | cld; |
|
- | 80 | rep movsb; |
|
- | 81 | ||
- | 82 | mov $VESA_INIT_SEGMENT<<4,%edi; |
|
- | 83 | call *%edi; |
|
- | 84 | mov %esi,KA2PA(vesa_ph_addr); |
|
- | 85 | mov %di,KA2PA(vesa_height); |
|
- | 86 | shr $16,%edi; |
|
- | 87 | mov %di,KA2PA(vesa_width); |
|
- | 88 | mov %bx,KA2PA(vesa_scanline); |
|
- | 89 | shr $16,%ebx; |
|
- | 90 | mov %bx,KA2PA(vesa_bpp); |
|
- | 91 | #endif |
|
- | 92 | ||
75 | # Protected 32-bit. We want to reuse the code-seg descriptor, |
93 | # Protected 32-bit. We want to reuse the code-seg descriptor, |
76 | # the Default operand size must not be 1 when entering long mode |
94 | # the Default operand size must not be 1 when entering long mode |
77 | 95 | ||
78 | movl $0x80000000, %eax |
96 | movl $0x80000000, %eax |
79 | cpuid |
97 | cpuid |
80 | cmp $0x80000000, %eax # any function > 80000000h? |
98 | cmp $0x80000000, %eax # any function > 80000000h? |
81 | jbe long_mode_unsupported |
99 | jbe long_mode_unsupported |
82 | movl $(AMD_CPUID_EXTENDED), %eax # Extended function code 80000001 |
100 | movl $(AMD_CPUID_EXTENDED), %eax # Extended function code 80000001 |
83 | cpuid |
101 | cpuid |
84 | bt $29, %edx # Test if long mode is supported. |
102 | bt $29, %edx # Test if long mode is supported. |
85 | jc long_mode_supported |
103 | jc long_mode_supported |
86 | 104 | ||
87 | long_mode_unsupported: |
105 | long_mode_unsupported: |
88 | cli |
106 | cli |
89 | hlt |
107 | hlt |
90 | 108 | ||
91 | long_mode_supported: |
109 | long_mode_supported: |
92 | 110 | ||
93 | # Enable 64-bit page transaltion entries - CR4.PAE = 1. |
111 | # Enable 64-bit page transaltion entries - CR4.PAE = 1. |
94 | # Paging is not enabled until after long mode is enabled |
112 | # Paging is not enabled until after long mode is enabled |
95 | 113 | ||
96 | movl %cr4, %eax |
114 | movl %cr4, %eax |
97 | btsl $5, %eax |
115 | btsl $5, %eax |
98 | movl %eax, %cr4 |
116 | movl %eax, %cr4 |
99 | 117 | ||
100 | # Set up paging tables |
118 | # Set up paging tables |
101 | 119 | ||
102 | leal ptl_0, %eax |
120 | leal ptl_0, %eax |
103 | movl %eax, %cr3 |
121 | movl %eax, %cr3 |
104 | 122 | ||
105 | # Enable long mode |
123 | # Enable long mode |
106 | 124 | ||
107 | movl $EFER_MSR_NUM, %ecx # EFER MSR number |
125 | movl $EFER_MSR_NUM, %ecx # EFER MSR number |
108 | rdmsr # Read EFER |
126 | rdmsr # Read EFER |
109 | btsl $AMD_LME_FLAG, %eax # Set LME=1 |
127 | btsl $AMD_LME_FLAG, %eax # Set LME=1 |
110 | wrmsr # Write EFER |
128 | wrmsr # Write EFER |
111 | 129 | ||
112 | # Enable paging to activate long mode (set CR0.PG=1) |
130 | # Enable paging to activate long mode (set CR0.PG=1) |
113 | 131 | ||
114 | movl %cr0, %eax |
132 | movl %cr0, %eax |
115 | btsl $31, %eax |
133 | btsl $31, %eax |
116 | movl %eax, %cr0 |
134 | movl %eax, %cr0 |
117 | 135 | ||
118 | # At this point we are in compatibility mode |
136 | # At this point we are in compatibility mode |
119 | 137 | ||
120 | jmpl $gdtselector(KTEXT_DES), $start64 |
138 | jmpl $gdtselector(KTEXT_DES), $start64 |
121 | 139 | ||
122 | .code64 |
140 | .code64 |
123 | start64: |
141 | start64: |
124 | movq $(PA2KA(START_STACK)), %rsp |
142 | movq $(PA2KA(START_STACK)), %rsp |
125 | movl grub_eax, %eax |
143 | movl grub_eax, %eax |
126 | movl grub_ebx, %ebx |
144 | movl grub_ebx, %ebx |
127 | 145 | ||
128 | cmpl $MULTIBOOT_LOADER_MAGIC, %eax # compare GRUB signature |
146 | cmpl $MULTIBOOT_LOADER_MAGIC, %eax # compare GRUB signature |
129 | je valid_boot |
147 | je valid_boot |
130 | 148 | ||
131 | xorl %ecx, %ecx # no memory size or map available |
149 | xorl %ecx, %ecx # no memory size or map available |
132 | movl %ecx, e801memorysize |
150 | movl %ecx, e801memorysize |
133 | movl %ecx, e820counter |
151 | movl %ecx, e820counter |
134 | 152 | ||
135 | jmp invalid_boot |
153 | jmp invalid_boot |
136 | 154 | ||
137 | valid_boot: |
155 | valid_boot: |
138 | 156 | ||
139 | movl (%ebx), %eax # ebx = physical address of struct multiboot_info |
157 | movl (%ebx), %eax # ebx = physical address of struct multiboot_info |
140 | 158 | ||
141 | bt $0, %eax # mbi->flags[0] (mem_lower, mem_upper valid) |
159 | bt $0, %eax # mbi->flags[0] (mem_lower, mem_upper valid) |
142 | jc mem_valid |
160 | jc mem_valid |
143 | 161 | ||
144 | xorl %ecx, %ecx |
162 | xorl %ecx, %ecx |
145 | jmp mem_invalid |
163 | jmp mem_invalid |
146 | 164 | ||
147 | mem_valid: |
165 | mem_valid: |
148 | movl 4(%ebx), %ecx # mbi->mem_lower |
166 | movl 4(%ebx), %ecx # mbi->mem_lower |
149 | addl 8(%ebx), %ecx # mbi->mem_upper |
167 | addl 8(%ebx), %ecx # mbi->mem_upper |
150 | 168 | ||
151 | mem_invalid: |
169 | mem_invalid: |
152 | movl %ecx, e801memorysize |
170 | movl %ecx, e801memorysize |
153 | 171 | ||
154 | bt $3, %eax # mbi->flags[3] (mods_count, mods_addr valid) |
172 | bt $3, %eax # mbi->flags[3] (mods_count, mods_addr valid) |
155 | jc mods_valid |
173 | jc mods_valid |
156 | 174 | ||
157 | xorq %rcx, %rcx |
175 | xorq %rcx, %rcx |
158 | movq %rcx, init |
176 | movq %rcx, init |
159 | jmp mods_end |
177 | jmp mods_end |
160 | 178 | ||
161 | mods_valid: |
179 | mods_valid: |
162 | 180 | ||
163 | xorq %rcx, %rcx |
181 | xorq %rcx, %rcx |
164 | movl 20(%ebx), %ecx # mbi->mods_count |
182 | movl 20(%ebx), %ecx # mbi->mods_count |
165 | movq %rcx, init |
183 | movq %rcx, init |
166 | 184 | ||
167 | cmpl $0, %ecx |
185 | cmpl $0, %ecx |
168 | je mods_end |
186 | je mods_end |
169 | 187 | ||
170 | movl 24(%ebx), %esi # mbi->mods_addr |
188 | movl 24(%ebx), %esi # mbi->mods_addr |
171 | movq $init, %rdi |
189 | movq $init, %rdi |
172 | 190 | ||
173 | mods_loop: |
191 | mods_loop: |
174 | 192 | ||
175 | xorq %rdx, %rdx |
193 | xorq %rdx, %rdx |
176 | movl 0(%esi), %edx # mods->mod_start |
194 | movl 0(%esi), %edx # mods->mod_start |
177 | movq $0xffff800000000000, %r10 |
195 | movq $0xffff800000000000, %r10 |
178 | addq %r10, %rdx |
196 | addq %r10, %rdx |
179 | movq %rdx, 8(%rdi) |
197 | movq %rdx, 8(%rdi) |
180 | 198 | ||
181 | xorq %rdx, %rdx |
199 | xorq %rdx, %rdx |
182 | movl 4(%esi), %edx |
200 | movl 4(%esi), %edx |
183 | subl 0(%esi), %edx # mods->mod_end - mods->mod_start |
201 | subl 0(%esi), %edx # mods->mod_end - mods->mod_start |
184 | movq %rdx, 16(%rdi) |
202 | movq %rdx, 16(%rdi) |
185 | 203 | ||
186 | addl $16, %esi |
204 | addl $16, %esi |
187 | addq $16, %rdi |
205 | addq $16, %rdi |
188 | 206 | ||
189 | loop mods_loop |
207 | loop mods_loop |
190 | 208 | ||
191 | mods_end: |
209 | mods_end: |
192 | 210 | ||
193 | bt $6, %eax # mbi->flags[6] (mmap_length, mmap_addr valid) |
211 | bt $6, %eax # mbi->flags[6] (mmap_length, mmap_addr valid) |
194 | jc mmap_valid |
212 | jc mmap_valid |
195 | 213 | ||
196 | xorl %edx, %edx |
214 | xorl %edx, %edx |
197 | jmp mmap_invalid |
215 | jmp mmap_invalid |
198 | 216 | ||
199 | mmap_valid: |
217 | mmap_valid: |
200 | movl 44(%ebx), %ecx # mbi->mmap_length |
218 | movl 44(%ebx), %ecx # mbi->mmap_length |
201 | movl 48(%ebx), %esi # mbi->mmap_addr |
219 | movl 48(%ebx), %esi # mbi->mmap_addr |
202 | movq $e820table, %rdi |
220 | movq $e820table, %rdi |
203 | xorl %edx, %edx |
221 | xorl %edx, %edx |
204 | 222 | ||
205 | mmap_loop: |
223 | mmap_loop: |
206 | cmpl $0, %ecx |
224 | cmpl $0, %ecx |
207 | jle mmap_end |
225 | jle mmap_end |
208 | 226 | ||
209 | movl 4(%esi), %eax # mmap->base_addr_low |
227 | movl 4(%esi), %eax # mmap->base_addr_low |
210 | movl %eax, (%rdi) |
228 | movl %eax, (%rdi) |
211 | 229 | ||
212 | movl 8(%esi), %eax # mmap->base_addr_high |
230 | movl 8(%esi), %eax # mmap->base_addr_high |
213 | movl %eax, 4(%rdi) |
231 | movl %eax, 4(%rdi) |
214 | 232 | ||
215 | movl 12(%esi), %eax # mmap->length_low |
233 | movl 12(%esi), %eax # mmap->length_low |
216 | movl %eax, 8(%rdi) |
234 | movl %eax, 8(%rdi) |
217 | 235 | ||
218 | movl 16(%esi), %eax # mmap->length_high |
236 | movl 16(%esi), %eax # mmap->length_high |
219 | movl %eax, 12(%rdi) |
237 | movl %eax, 12(%rdi) |
220 | 238 | ||
221 | movl 20(%esi), %eax # mmap->type |
239 | movl 20(%esi), %eax # mmap->type |
222 | movl %eax, 16(%rdi) |
240 | movl %eax, 16(%rdi) |
223 | 241 | ||
224 | movl (%esi), %eax # mmap->size |
242 | movl (%esi), %eax # mmap->size |
225 | addl $0x4, %eax |
243 | addl $0x4, %eax |
226 | addl %eax, %esi |
244 | addl %eax, %esi |
227 | subl %eax, %ecx |
245 | subl %eax, %ecx |
228 | addq $MEMMAP_E820_RECORD_SIZE, %rdi |
246 | addq $MEMMAP_E820_RECORD_SIZE, %rdi |
229 | incl %edx |
247 | incl %edx |
230 | jmp mmap_loop |
248 | jmp mmap_loop |
231 | 249 | ||
232 | mmap_end: |
250 | mmap_end: |
233 | 251 | ||
234 | mmap_invalid: |
252 | mmap_invalid: |
235 | movl %edx, e820counter |
253 | movl %edx, e820counter |
236 | 254 | ||
237 | invalid_boot: |
255 | invalid_boot: |
238 | 256 | ||
239 | #ifdef CONFIG_SMP |
257 | #ifdef CONFIG_SMP |
240 | 258 | ||
241 | # copy AP bootstrap routines below 1 MB |
259 | # copy AP bootstrap routines below 1 MB |
242 | 260 | ||
243 | movq $BOOT_OFFSET, %rsi |
261 | movq $BOOT_OFFSET, %rsi |
244 | movq $AP_BOOT_OFFSET, %rdi |
262 | movq $AP_BOOT_OFFSET, %rdi |
245 | movq $_hardcoded_unmapped_size, %rcx |
263 | movq $_hardcoded_unmapped_size, %rcx |
246 | cld |
264 | cld |
247 | rep movsb |
265 | rep movsb |
248 | 266 | ||
249 | #endif |
267 | #endif |
250 | 268 | ||
251 | call main_bsp # never returns |
269 | call main_bsp # never returns |
252 | 270 | ||
253 | cli |
271 | cli |
254 | hlt |
272 | hlt |
- | 273 | ||
- | 274 | #ifdef CONFIG_FB |
|
- | 275 | .code32 |
|
- | 276 | vesa_init: |
|
- | 277 | jmp $gdtselector(VESA_INIT_DES),$vesa_init_real-vesa_init; |
|
- | 278 | .code16 |
|
- | 279 | vesa_init_real: |
|
- | 280 | ||
- | 281 | mov %cr0,%eax; |
|
- | 282 | and $~1,%eax; |
|
- | 283 | mov %eax,%cr0; |
|
- | 284 | ||
- | 285 | ||
- | 286 | jmp $VESA_INIT_SEGMENT,$vesa_init_real2-vesa_init; |
|
- | 287 | ||
- | 288 | vesa_init_real2: |
|
- | 289 | ||
- | 290 | ||
- | 291 | mov %esp,%ebp; |
|
- | 292 | mov %ss,%cx; |
|
- | 293 | mov $VESA_INIT_SEGMENT,%bx; |
|
- | 294 | mov %bx,%ss; |
|
- | 295 | mov $0x0000fffc,%esp; |
|
- | 296 | push %ds; |
|
- | 297 | push %es; |
|
- | 298 | push %fs; |
|
- | 299 | push %gs; |
|
- | 300 | push %ebp; |
|
- | 301 | push %cx; |
|
- | 302 | ||
- | 303 | mov %bx,%ds; |
|
- | 304 | mov %bx,%es; |
|
- | 305 | mov %bx,%fs; |
|
- | 306 | mov %bx,%gs; |
|
- | 307 | ||
- | 308 | ||
- | 309 | mov $vesa_idt-vesa_init,%ebx; |
|
- | 310 | lidtl (%ebx); |
|
- | 311 | ||
- | 312 | #define VESA_INFO_SIZE 1024 |
|
- | 313 | ||
- | 314 | #define VESA_MODE_LIST_PTR_OFFSET 14 |
|
- | 315 | #define VESA_MODE_WIDTH_OFFSET 18 |
|
- | 316 | #define VESA_MODE_HEIGHT_OFFSET 20 |
|
- | 317 | #define VESA_MODE_BPP_OFFSET 25 |
|
- | 318 | #define VESA_MODE_SCANLINE_OFFSET 16 |
|
- | 319 | #define VESA_MODE_PHADDR_OFFSET 40 |
|
- | 320 | ||
- | 321 | #define VESA_END_OF_MODES 0xffff |
|
- | 322 | ||
- | 323 | #define VESA_OK 0x4f |
|
- | 324 | ||
- | 325 | #define VESA_GET_INFO 0x4f00 |
|
- | 326 | #define VESA_GET_MODE_INFO 0x4f01 |
|
- | 327 | #define VESA_SET_MODE 0x4f02 |
|
- | 328 | ||
- | 329 | #define CONFIG_VESA_BPP_a 255 |
|
- | 330 | ||
- | 331 | #if CONFIG_VESA_BPP==24 |
|
- | 332 | #undef CONFIG_VESA_BPP_a |
|
- | 333 | #define CONFIG_VESA_BPP_a 32 |
|
- | 334 | #endif |
|
- | 335 | ||
- | 336 | ||
- | 337 | mov $VESA_GET_INFO,%ax; |
|
- | 338 | mov $e_vesa_init-vesa_init,%di |
|
- | 339 | push %di; |
|
- | 340 | int $0x10; |
|
- | 341 | pop %di; |
|
- | 342 | cmp $VESA_OK,%al; |
|
- | 343 | jnz 0f; |
|
- | 344 | mov 2+VESA_MODE_LIST_PTR_OFFSET(%di),%si; |
|
- | 345 | mov %si,%gs; |
|
- | 346 | mov VESA_MODE_LIST_PTR_OFFSET(%di),%si; |
|
- | 347 | ||
- | 348 | add $VESA_INFO_SIZE,%di; |
|
- | 349 | ||
- | 350 | 1:# Try next mode |
|
- | 351 | mov %gs:(%si),%cx; |
|
- | 352 | cmp $VESA_END_OF_MODES,%cx; |
|
- | 353 | jz 0f; |
|
- | 354 | inc %si; |
|
- | 355 | inc %si; |
|
- | 356 | push %cx; |
|
- | 357 | push %di; |
|
- | 358 | push %si; |
|
- | 359 | mov $VESA_GET_MODE_INFO,%ax; |
|
- | 360 | int $0x10; |
|
- | 361 | pop %si; |
|
- | 362 | pop %di; |
|
- | 363 | pop %cx; |
|
- | 364 | cmp $VESA_OK,%al; |
|
- | 365 | jnz 0f; |
|
- | 366 | ||
- | 367 | ||
- | 368 | mov $CONFIG_VESA_WIDTH,%ax; |
|
- | 369 | cmp VESA_MODE_WIDTH_OFFSET(%di),%ax; |
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- | 370 | jnz 1b; |
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- | 371 | mov $CONFIG_VESA_HEIGHT,%ax; |
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- | 372 | cmp VESA_MODE_HEIGHT_OFFSET(%di),%ax; |
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- | 373 | jnz 1b; |
|
- | 374 | mov $CONFIG_VESA_BPP,%al; |
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- | 375 | cmp VESA_MODE_BPP_OFFSET(%di),%al; |
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- | 376 | jz 2f; |
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- | 377 | mov $CONFIG_VESA_BPP_a,%al; |
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- | 378 | cmp VESA_MODE_BPP_OFFSET(%di),%al; |
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- | 379 | jnz 1b; |
|
- | 380 | ||
- | 381 | 2: |
|
- | 382 | ||
- | 383 | mov %cx,%bx; |
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- | 384 | or $0xC000,%bx; |
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- | 385 | push %di; |
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- | 386 | mov $VESA_SET_MODE,%ax; |
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- | 387 | int $0x10; |
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- | 388 | pop %di; |
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- | 389 | cmp $VESA_OK,%al; |
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- | 390 | jnz 0f; |
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- | 391 | ||
- | 392 | mov VESA_MODE_PHADDR_OFFSET(%di),%esi; |
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- | 393 | mov VESA_MODE_WIDTH_OFFSET(%di),%ax; |
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- | 394 | shl $16,%eax; |
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- | 395 | mov VESA_MODE_HEIGHT_OFFSET(%di),%ax; |
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- | 396 | mov VESA_MODE_BPP_OFFSET(%di),%bl; |
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- | 397 | xor %bh,%bh; |
|
- | 398 | shl $16,%ebx; |
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- | 399 | mov VESA_MODE_SCANLINE_OFFSET(%di),%bx; |
|
- | 400 | mov %eax,%edi; |
|
- | 401 | ||
- | 402 | ||
- | 403 | ||
- | 404 | 8: |
|
- | 405 | ||
- | 406 | mov %cr0,%eax; |
|
- | 407 | or $1,%eax; |
|
- | 408 | mov %eax,%cr0; |
|
- | 409 | ||
- | 410 | jmp 9f; |
|
- | 411 | 9: |
|
- | 412 | ||
- | 413 | pop %cx; |
|
- | 414 | pop %ebp; |
|
- | 415 | pop %gs; |
|
- | 416 | pop %fs; |
|
- | 417 | pop %es; |
|
- | 418 | pop %ds; |
|
- | 419 | mov %cx,%ss; |
|
- | 420 | mov %ebp,%esp; |
|
- | 421 | ||
- | 422 | ljmpl $gdtselector(KTEXT32_DES),$(vesa_init_protect-vesa_init+VESA_INIT_SEGMENT<<4); |
|
- | 423 | ||
- | 424 | vesa_init_protect: |
|
- | 425 | .code32 |
|
- | 426 | ret; |
|
- | 427 | ||
- | 428 | 0: #Error no Prefered mode found |
|
- | 429 | ||
- | 430 | mov $0x111,%cx; |
|
- | 431 | push %di; |
|
- | 432 | push %cx; |
|
- | 433 | mov $VESA_GET_MODE_INFO,%ax; |
|
- | 434 | int $0x10; |
|
- | 435 | pop %cx; |
|
- | 436 | pop %di; |
|
- | 437 | cmp $VESA_OK,%al; |
|
- | 438 | jnz 1f; |
|
- | 439 | jmp 2b; |
|
- | 440 | ||
- | 441 | 1:mov $0x0003,%ax; |
|
- | 442 | int $0x10; |
|
- | 443 | mov $0xffffffff,%edi; /* EGA text mode used, because of problems with VESA */ |
|
- | 444 | jmp 8; |
|
- | 445 | ||
- | 446 | ||
- | 447 | vesa_idt: |
|
- | 448 | .word 0x03ff |
|
- | 449 | .long 0 |
|
- | 450 | .align 4 |
|
- | 451 | e_vesa_init: |
|
- | 452 | #endif |
|
- | 453 | ||
- | 454 | ||
255 | 455 | ||
256 | .section K_DATA_START, "aw", @progbits |
456 | .section K_DATA_START, "aw", @progbits |
257 | .align 4096 |
457 | .align 4096 |
258 | 458 | ||
259 | # Identical mapping of first 64MB and the same of -2GB -> 0 |
459 | # Identical mapping of first 64MB and the same of -2GB -> 0 |
260 | .global ptl_2 |
460 | .global ptl_2 |
261 | ptl_2: |
461 | ptl_2: |
262 | .quad 0x0 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
462 | .quad 0x0 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
263 | .quad 0x200000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
463 | .quad 0x200000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
264 | .quad 0x400000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
464 | .quad 0x400000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
265 | .quad 0x600000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
465 | .quad 0x600000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
266 | .quad 0x800000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
466 | .quad 0x800000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
267 | .quad 0xa00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
467 | .quad 0xa00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
268 | .quad 0xc00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
468 | .quad 0xc00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
269 | .quad 0xe00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
469 | .quad 0xe00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
270 | .quad 0x1000000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
470 | .quad 0x1000000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
271 | .quad 0x1200000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
471 | .quad 0x1200000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
272 | .quad 0x1400000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
472 | .quad 0x1400000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
273 | .quad 0x1600000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
473 | .quad 0x1600000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
274 | .quad 0x1800000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
474 | .quad 0x1800000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
275 | .quad 0x1a00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
475 | .quad 0x1a00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
276 | .quad 0x1c00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
476 | .quad 0x1c00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
277 | .quad 0x1e00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
477 | .quad 0x1e00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
278 | .quad 0x2000000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
478 | .quad 0x2000000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
279 | .quad 0x2200000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
479 | .quad 0x2200000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
280 | .quad 0x2400000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
480 | .quad 0x2400000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
281 | .quad 0x2600000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
481 | .quad 0x2600000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
282 | .quad 0x2800000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
482 | .quad 0x2800000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
283 | .quad 0x2a00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
483 | .quad 0x2a00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
284 | .quad 0x2c00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
484 | .quad 0x2c00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
285 | .quad 0x2e00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
485 | .quad 0x2e00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
286 | .quad 0x3000000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
486 | .quad 0x3000000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
287 | .quad 0x3200000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
487 | .quad 0x3200000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
288 | .quad 0x3400000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
488 | .quad 0x3400000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
289 | .quad 0x3600000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
489 | .quad 0x3600000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
290 | .quad 0x3800000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
490 | .quad 0x3800000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
291 | .quad 0x3a00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
491 | .quad 0x3a00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
292 | .quad 0x3c00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
492 | .quad 0x3c00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
293 | .quad 0x3e00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
493 | .quad 0x3e00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
294 | 494 | ||
295 | .align 4096 |
495 | .align 4096 |
296 | .global ptl_1 |
496 | .global ptl_1 |
297 | ptl_1: |
497 | ptl_1: |
298 | .quad ptl_2 + (PTL_WRITABLE | PTL_PRESENT) |
498 | .quad ptl_2 + (PTL_WRITABLE | PTL_PRESENT) |
299 | .fill 509,8,0 |
499 | .fill 509,8,0 |
300 | .quad ptl_2 + (PTL_WRITABLE | PTL_PRESENT) |
500 | .quad ptl_2 + (PTL_WRITABLE | PTL_PRESENT) |
301 | .fill 1,8,0 |
501 | .fill 1,8,0 |
302 | 502 | ||
303 | .align 4096 |
503 | .align 4096 |
304 | .global ptl_0 |
504 | .global ptl_0 |
305 | ptl_0: |
505 | ptl_0: |
306 | .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT) |
506 | .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT) |
307 | .fill 255,8,0 |
507 | .fill 255,8,0 |
308 | .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT) |
508 | .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT) |
309 | .fill 254,8,0 |
509 | .fill 254,8,0 |
310 | .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT) |
510 | .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT) |
311 | 511 | ||
312 | .global bootstrap_gdtr |
512 | .global bootstrap_gdtr |
313 | bootstrap_gdtr: |
513 | bootstrap_gdtr: |
314 | .word gdtselector(GDT_ITEMS) |
514 | .word gdtselector(GDT_ITEMS) |
315 | .long KA2PA(gdt) |
515 | .long KA2PA(gdt) |
316 | 516 | ||
317 | grub_eax: |
517 | grub_eax: |
318 | .long 0 |
518 | .long 0 |
319 | 519 | ||
320 | grub_ebx: |
520 | grub_ebx: |
321 | .long 0 |
521 | .long 0 |
322 | 522 |