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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 | # Copyright (c) 2008 Jakub Jermar |
4 | # Copyright (c) 2008 Jakub Jermar |
5 | # All rights reserved. |
5 | # All rights reserved. |
6 | # |
6 | # |
7 | # Redistribution and use in source and binary forms, with or without |
7 | # Redistribution and use in source and binary forms, with or without |
8 | # modification, are permitted provided that the following conditions |
8 | # modification, are permitted provided that the following conditions |
9 | # are met: |
9 | # are met: |
10 | # |
10 | # |
11 | # - Redistributions of source code must retain the above copyright |
11 | # - Redistributions of source code must retain the above copyright |
12 | # notice, this list of conditions and the following disclaimer. |
12 | # notice, this list of conditions and the following disclaimer. |
13 | # - Redistributions in binary form must reproduce the above copyright |
13 | # - Redistributions in binary form must reproduce the above copyright |
14 | # notice, this list of conditions and the following disclaimer in the |
14 | # notice, this list of conditions and the following disclaimer in the |
15 | # documentation and/or other materials provided with the distribution. |
15 | # documentation and/or other materials provided with the distribution. |
16 | # - The name of the author may not be used to endorse or promote products |
16 | # - The name of the author may not be used to endorse or promote products |
17 | # derived from this software without specific prior written permission. |
17 | # derived from this software without specific prior written permission. |
18 | # |
18 | # |
19 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
19 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
20 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
20 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
21 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
21 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
22 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
22 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
23 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
23 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
24 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
24 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
25 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
25 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
26 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
26 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
27 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
27 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
28 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
28 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
29 | # |
29 | # |
30 | 30 | ||
31 | #include <arch/boot/boot.h> |
31 | #include <arch/boot/boot.h> |
32 | #include <arch/boot/memmap.h> |
32 | #include <arch/boot/memmap.h> |
33 | #include <arch/mm/page.h> |
33 | #include <arch/mm/page.h> |
34 | #include <arch/mm/ptl.h> |
34 | #include <arch/mm/ptl.h> |
35 | #include <arch/pm.h> |
35 | #include <arch/pm.h> |
36 | #include <arch/cpu.h> |
36 | #include <arch/cpu.h> |
37 | #include <arch/cpuid.h> |
37 | #include <arch/cpuid.h> |
38 | 38 | ||
39 | #define START_STACK (BOOT_OFFSET - BOOT_STACK_SIZE) |
39 | #define START_STACK (BOOT_OFFSET - BOOT_STACK_SIZE) |
40 | 40 | ||
41 | .section K_TEXT_START, "ax" |
41 | .section K_TEXT_START, "ax" |
42 | 42 | ||
43 | .code32 |
43 | .code32 |
44 | .align 4 |
44 | .align 4 |
45 | .global multiboot_image_start |
45 | .global multiboot_image_start |
46 | multiboot_header: |
46 | multiboot_header: |
47 | .long MULTIBOOT_HEADER_MAGIC |
47 | .long MULTIBOOT_HEADER_MAGIC |
48 | .long MULTIBOOT_HEADER_FLAGS |
48 | .long MULTIBOOT_HEADER_FLAGS |
49 | .long -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS) # checksum |
49 | .long -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS) # checksum |
50 | .long multiboot_header |
50 | .long multiboot_header |
51 | .long unmapped_ktext_start |
51 | .long unmapped_ktext_start |
52 | .long 0 |
52 | .long 0 |
53 | .long 0 |
53 | .long 0 |
54 | .long multiboot_image_start |
54 | .long multiboot_image_start |
55 | 55 | ||
56 | multiboot_image_start: |
56 | multiboot_image_start: |
- | 57 | cld |
|
57 | movl $START_STACK, %esp # initialize stack pointer |
58 | movl $START_STACK, %esp # initialize stack pointer |
58 | lgdtl bootstrap_gdtr # initialize Global Descriptor Table register |
59 | lgdtl bootstrap_gdtr # initialize Global Descriptor Table register |
59 | 60 | ||
60 | movw $gdtselector(KDATA_DES), %cx |
61 | movw $gdtselector(KDATA_DES), %cx |
61 | movw %cx, %es |
62 | movw %cx, %es |
62 | movw %cx, %ds # kernel data + stack |
63 | movw %cx, %ds # kernel data + stack |
63 | movw %cx, %ss |
64 | movw %cx, %ss |
64 | # Simics seems to remove hidden part of GS on entering user mode |
65 | # Simics seems to remove hidden part of GS on entering user mode |
65 | # when _visible_ part of GS does not point to user-mode segment |
66 | # when _visible_ part of GS does not point to user-mode segment |
66 | movw $gdtselector(UDATA_DES), %cx |
67 | movw $gdtselector(UDATA_DES), %cx |
67 | movw %cx, %fs |
68 | movw %cx, %fs |
68 | movw %cx, %gs |
69 | movw %cx, %gs |
69 | 70 | ||
70 | jmpl $gdtselector(KTEXT32_DES), $multiboot_meeting_point |
71 | jmpl $gdtselector(KTEXT32_DES), $multiboot_meeting_point |
71 | multiboot_meeting_point: |
72 | multiboot_meeting_point: |
72 | 73 | ||
73 | movl %eax, grub_eax # save parameters from GRUB |
74 | movl %eax, grub_eax # save parameters from GRUB |
74 | movl %ebx, grub_ebx |
75 | movl %ebx, grub_ebx |
75 | 76 | ||
76 | # Protected 32-bit. We want to reuse the code-seg descriptor, |
77 | # Protected 32-bit. We want to reuse the code-seg descriptor, |
77 | # the Default operand size must not be 1 when entering long mode |
78 | # the Default operand size must not be 1 when entering long mode |
78 | 79 | ||
79 | movl $(INTEL_CPUID_EXTENDED), %eax |
80 | movl $(INTEL_CPUID_EXTENDED), %eax |
80 | cpuid |
81 | cpuid |
81 | cmp $(INTEL_CPUID_EXTENDED), %eax |
82 | cmp $(INTEL_CPUID_EXTENDED), %eax |
82 | ja extended_cpuid_supported |
83 | ja extended_cpuid_supported |
83 | 84 | ||
84 | movl $extended_cpuid_msg, %esi |
85 | movl $extended_cpuid_msg, %esi |
85 | jmp error_halt |
86 | jmp error_halt |
86 | 87 | ||
87 | extended_cpuid_supported: |
88 | extended_cpuid_supported: |
88 | 89 | ||
89 | movl $(AMD_CPUID_EXTENDED), %eax |
90 | movl $(AMD_CPUID_EXTENDED), %eax |
90 | cpuid |
91 | cpuid |
91 | bt $(AMD_EXT_LONG_MODE), %edx |
92 | bt $(AMD_EXT_LONG_MODE), %edx |
92 | jc long_mode_supported |
93 | jc long_mode_supported |
93 | 94 | ||
94 | movl $long_mode_msg, %esi |
95 | movl $long_mode_msg, %esi |
95 | jmp error_halt |
96 | jmp error_halt |
96 | 97 | ||
97 | long_mode_supported: |
98 | long_mode_supported: |
98 | 99 | ||
99 | bt $(AMD_EXT_NOEXECUTE), %edx |
100 | bt $(AMD_EXT_NOEXECUTE), %edx |
100 | jc noexecute_supported |
101 | jc noexecute_supported |
101 | 102 | ||
102 | movl $noexecute_msg, %esi |
103 | movl $noexecute_msg, %esi |
103 | jmp error_halt |
104 | jmp error_halt |
104 | 105 | ||
105 | noexecute_supported: |
106 | noexecute_supported: |
106 | 107 | ||
107 | movl $(INTEL_CPUID_STANDARD), %eax |
108 | movl $(INTEL_CPUID_STANDARD), %eax |
108 | cpuid |
109 | cpuid |
109 | bt $(INTEL_FXSAVE), %edx |
110 | bt $(INTEL_FXSAVE), %edx |
110 | jc fx_supported |
111 | jc fx_supported |
111 | 112 | ||
112 | movl $fx_msg, %esi |
113 | movl $fx_msg, %esi |
113 | jmp error_halt |
114 | jmp error_halt |
114 | 115 | ||
115 | fx_supported: |
116 | fx_supported: |
116 | 117 | ||
117 | bt $(INTEL_SSE2), %edx |
118 | bt $(INTEL_SSE2), %edx |
118 | jc sse2_supported |
119 | jc sse2_supported |
119 | 120 | ||
120 | movl $sse2_msg, %esi |
121 | movl $sse2_msg, %esi |
121 | jmp error_halt |
122 | jmp error_halt |
122 | 123 | ||
123 | sse2_supported: |
124 | sse2_supported: |
124 | 125 | ||
125 | #ifdef CONFIG_FB |
126 | #ifdef CONFIG_FB |
126 | mov $vesa_init, %esi |
127 | mov $vesa_init, %esi |
127 | mov $VESA_INIT_SEGMENT << 4, %edi |
128 | mov $VESA_INIT_SEGMENT << 4, %edi |
128 | mov $e_vesa_init - vesa_init, %ecx |
129 | mov $e_vesa_init - vesa_init, %ecx |
129 | cld |
- | |
130 | rep movsb |
130 | rep movsb |
131 | 131 | ||
132 | mov $VESA_INIT_SEGMENT << 4, %edi |
132 | mov $VESA_INIT_SEGMENT << 4, %edi |
133 | jmpl *%edi |
133 | jmpl *%edi |
134 | 134 | ||
135 | vesa_meeting_point: |
135 | vesa_meeting_point: |
136 | 136 | ||
137 | mov %esi, KA2PA(vesa_ph_addr) |
137 | mov %esi, KA2PA(vesa_ph_addr) |
138 | mov %di, KA2PA(vesa_height) |
138 | mov %di, KA2PA(vesa_height) |
139 | shr $16, %edi |
139 | shr $16, %edi |
140 | mov %di, KA2PA(vesa_width) |
140 | mov %di, KA2PA(vesa_width) |
141 | mov %bx, KA2PA(vesa_scanline) |
141 | mov %bx, KA2PA(vesa_scanline) |
142 | shr $16, %ebx |
142 | shr $16, %ebx |
143 | mov %bx, KA2PA(vesa_bpp) |
143 | mov %bx, KA2PA(vesa_bpp) |
144 | #endif |
144 | #endif |
145 | 145 | ||
146 | # Enable 64-bit page translation entries - CR4.PAE = 1. |
146 | # Enable 64-bit page translation entries - CR4.PAE = 1. |
147 | # Paging is not enabled until after long mode is enabled |
147 | # Paging is not enabled until after long mode is enabled |
148 | 148 | ||
149 | movl %cr4, %eax |
149 | movl %cr4, %eax |
150 | btsl $5, %eax |
150 | btsl $5, %eax |
151 | movl %eax, %cr4 |
151 | movl %eax, %cr4 |
152 | 152 | ||
153 | # Set up paging tables |
153 | # Set up paging tables |
154 | 154 | ||
155 | leal ptl_0, %eax |
155 | leal ptl_0, %eax |
156 | movl %eax, %cr3 |
156 | movl %eax, %cr3 |
157 | 157 | ||
158 | # Enable long mode |
158 | # Enable long mode |
159 | 159 | ||
160 | movl $EFER_MSR_NUM, %ecx # EFER MSR number |
160 | movl $EFER_MSR_NUM, %ecx # EFER MSR number |
161 | rdmsr # Read EFER |
161 | rdmsr # Read EFER |
162 | btsl $AMD_LME_FLAG, %eax # Set LME = 1 |
162 | btsl $AMD_LME_FLAG, %eax # Set LME = 1 |
163 | wrmsr # Write EFER |
163 | wrmsr # Write EFER |
164 | 164 | ||
165 | # Enable paging to activate long mode (set CR0.PG = 1) |
165 | # Enable paging to activate long mode (set CR0.PG = 1) |
166 | 166 | ||
167 | movl %cr0, %eax |
167 | movl %cr0, %eax |
168 | btsl $31, %eax |
168 | btsl $31, %eax |
169 | movl %eax, %cr0 |
169 | movl %eax, %cr0 |
170 | 170 | ||
171 | # At this point we are in compatibility mode |
171 | # At this point we are in compatibility mode |
172 | 172 | ||
173 | jmpl $gdtselector(KTEXT_DES), $start64 |
173 | jmpl $gdtselector(KTEXT_DES), $start64 |
174 | 174 | ||
175 | .code64 |
175 | .code64 |
176 | start64: |
176 | start64: |
177 | movq $(PA2KA(START_STACK)), %rsp |
177 | movq $(PA2KA(START_STACK)), %rsp |
178 | movl grub_eax, %eax |
178 | movl grub_eax, %eax |
179 | movl grub_ebx, %ebx |
179 | movl grub_ebx, %ebx |
180 | 180 | ||
181 | cmpl $MULTIBOOT_LOADER_MAGIC, %eax # compare GRUB signature |
181 | cmpl $MULTIBOOT_LOADER_MAGIC, %eax # compare GRUB signature |
182 | je valid_boot |
182 | je valid_boot |
183 | 183 | ||
184 | xorl %ecx, %ecx # no memory size or map available |
184 | xorl %ecx, %ecx # no memory size or map available |
185 | movl %ecx, e820counter |
185 | movl %ecx, e820counter |
186 | 186 | ||
187 | jmp invalid_boot |
187 | jmp invalid_boot |
188 | 188 | ||
189 | valid_boot: |
189 | valid_boot: |
190 | 190 | ||
191 | movl (%ebx), %eax # ebx = physical address of struct multiboot_info |
191 | movl (%ebx), %eax # ebx = physical address of struct multiboot_info |
192 | 192 | ||
193 | bt $3, %eax # mbi->flags[3] (mods_count, mods_addr valid) |
193 | bt $3, %eax # mbi->flags[3] (mods_count, mods_addr valid) |
194 | jc mods_valid |
194 | jc mods_valid |
195 | 195 | ||
196 | xorq %rcx, %rcx |
196 | xorq %rcx, %rcx |
197 | movq %rcx, init |
197 | movq %rcx, init |
198 | jmp mods_end |
198 | jmp mods_end |
199 | 199 | ||
200 | mods_valid: |
200 | mods_valid: |
201 | 201 | ||
202 | xorq %rcx, %rcx |
202 | xorq %rcx, %rcx |
203 | movl 20(%ebx), %ecx # mbi->mods_count |
203 | movl 20(%ebx), %ecx # mbi->mods_count |
204 | movq %rcx, init |
204 | movq %rcx, init |
205 | 205 | ||
206 | cmpl $0, %ecx |
206 | cmpl $0, %ecx |
207 | je mods_end |
207 | je mods_end |
208 | 208 | ||
209 | movl 24(%ebx), %esi # mbi->mods_addr |
209 | movl 24(%ebx), %esi # mbi->mods_addr |
210 | movq $init, %rdi |
210 | movq $init, %rdi |
211 | 211 | ||
212 | mods_loop: |
212 | mods_loop: |
213 | 213 | ||
214 | xorq %rdx, %rdx |
214 | xorq %rdx, %rdx |
215 | movl 0(%esi), %edx # mods->mod_start |
215 | movl 0(%esi), %edx # mods->mod_start |
216 | movq $0xffff800000000000, %r10 |
216 | movq $0xffff800000000000, %r10 |
217 | addq %r10, %rdx |
217 | addq %r10, %rdx |
218 | movq %rdx, 8(%rdi) |
218 | movq %rdx, 8(%rdi) |
219 | 219 | ||
220 | xorq %rdx, %rdx |
220 | xorq %rdx, %rdx |
221 | movl 4(%esi), %edx |
221 | movl 4(%esi), %edx |
222 | subl 0(%esi), %edx # mods->mod_end - mods->mod_start |
222 | subl 0(%esi), %edx # mods->mod_end - mods->mod_start |
223 | movq %rdx, 16(%rdi) |
223 | movq %rdx, 16(%rdi) |
224 | 224 | ||
225 | addl $16, %esi |
225 | addl $16, %esi |
226 | addq $16, %rdi |
226 | addq $16, %rdi |
227 | 227 | ||
228 | loop mods_loop |
228 | loop mods_loop |
229 | 229 | ||
230 | mods_end: |
230 | mods_end: |
231 | 231 | ||
232 | bt $6, %eax # mbi->flags[6] (mmap_length, mmap_addr valid) |
232 | bt $6, %eax # mbi->flags[6] (mmap_length, mmap_addr valid) |
233 | jc mmap_valid |
233 | jc mmap_valid |
234 | 234 | ||
235 | xorl %edx, %edx |
235 | xorl %edx, %edx |
236 | jmp mmap_invalid |
236 | jmp mmap_invalid |
237 | 237 | ||
238 | mmap_valid: |
238 | mmap_valid: |
239 | movl 44(%ebx), %ecx # mbi->mmap_length |
239 | movl 44(%ebx), %ecx # mbi->mmap_length |
240 | movl 48(%ebx), %esi # mbi->mmap_addr |
240 | movl 48(%ebx), %esi # mbi->mmap_addr |
241 | movq $e820table, %rdi |
241 | movq $e820table, %rdi |
242 | xorl %edx, %edx |
242 | xorl %edx, %edx |
243 | 243 | ||
244 | mmap_loop: |
244 | mmap_loop: |
245 | cmpl $0, %ecx |
245 | cmpl $0, %ecx |
246 | jle mmap_end |
246 | jle mmap_end |
247 | 247 | ||
248 | movl 4(%esi), %eax # mmap->base_addr_low |
248 | movl 4(%esi), %eax # mmap->base_addr_low |
249 | movl %eax, (%rdi) |
249 | movl %eax, (%rdi) |
250 | 250 | ||
251 | movl 8(%esi), %eax # mmap->base_addr_high |
251 | movl 8(%esi), %eax # mmap->base_addr_high |
252 | movl %eax, 4(%rdi) |
252 | movl %eax, 4(%rdi) |
253 | 253 | ||
254 | movl 12(%esi), %eax # mmap->length_low |
254 | movl 12(%esi), %eax # mmap->length_low |
255 | movl %eax, 8(%rdi) |
255 | movl %eax, 8(%rdi) |
256 | 256 | ||
257 | movl 16(%esi), %eax # mmap->length_high |
257 | movl 16(%esi), %eax # mmap->length_high |
258 | movl %eax, 12(%rdi) |
258 | movl %eax, 12(%rdi) |
259 | 259 | ||
260 | movl 20(%esi), %eax # mmap->type |
260 | movl 20(%esi), %eax # mmap->type |
261 | movl %eax, 16(%rdi) |
261 | movl %eax, 16(%rdi) |
262 | 262 | ||
263 | movl (%esi), %eax # mmap->size |
263 | movl (%esi), %eax # mmap->size |
264 | addl $0x4, %eax |
264 | addl $0x4, %eax |
265 | addl %eax, %esi |
265 | addl %eax, %esi |
266 | subl %eax, %ecx |
266 | subl %eax, %ecx |
267 | addq $MEMMAP_E820_RECORD_SIZE, %rdi |
267 | addq $MEMMAP_E820_RECORD_SIZE, %rdi |
268 | incl %edx |
268 | incl %edx |
269 | jmp mmap_loop |
269 | jmp mmap_loop |
270 | 270 | ||
271 | mmap_end: |
271 | mmap_end: |
272 | 272 | ||
273 | mmap_invalid: |
273 | mmap_invalid: |
274 | movl %edx, e820counter |
274 | movl %edx, e820counter |
275 | 275 | ||
276 | invalid_boot: |
276 | invalid_boot: |
277 | 277 | ||
278 | #ifdef CONFIG_SMP |
278 | #ifdef CONFIG_SMP |
279 | 279 | ||
280 | # copy AP bootstrap routines below 1 MB |
280 | # copy AP bootstrap routines below 1 MB |
281 | 281 | ||
282 | movq $BOOT_OFFSET, %rsi |
282 | movq $BOOT_OFFSET, %rsi |
283 | movq $AP_BOOT_OFFSET, %rdi |
283 | movq $AP_BOOT_OFFSET, %rdi |
284 | movq $_hardcoded_unmapped_size, %rcx |
284 | movq $_hardcoded_unmapped_size, %rcx |
285 | cld |
- | |
286 | rep movsb |
285 | rep movsb |
287 | 286 | ||
288 | #endif |
287 | #endif |
289 | 288 | ||
290 | call main_bsp # never returns |
289 | call main_bsp # never returns |
291 | 290 | ||
292 | cli |
291 | cli |
293 | hlt |
292 | hlt |
294 | 293 | ||
295 | #ifdef CONFIG_FB |
294 | #ifdef CONFIG_FB |
296 | .code32 |
295 | .code32 |
297 | vesa_init: |
296 | vesa_init: |
298 | jmp $gdtselector(VESA_INIT_DES), $vesa_init_real - vesa_init |
297 | jmp $gdtselector(VESA_INIT_DES), $vesa_init_real - vesa_init |
299 | 298 | ||
300 | .code16 |
299 | .code16 |
301 | vesa_init_real: |
300 | vesa_init_real: |
302 | 301 | ||
303 | mov %cr0, %eax |
302 | mov %cr0, %eax |
304 | and $~1, %eax |
303 | and $~1, %eax |
305 | mov %eax, %cr0 |
304 | mov %eax, %cr0 |
306 | 305 | ||
307 | jmp $VESA_INIT_SEGMENT, $vesa_init_real2 - vesa_init |
306 | jmp $VESA_INIT_SEGMENT, $vesa_init_real2 - vesa_init |
308 | 307 | ||
309 | vesa_init_real2: |
308 | vesa_init_real2: |
310 | 309 | ||
311 | mov $VESA_INIT_SEGMENT, %bx |
310 | mov $VESA_INIT_SEGMENT, %bx |
312 | 311 | ||
313 | mov %bx, %es |
312 | mov %bx, %es |
314 | mov %bx, %fs |
313 | mov %bx, %fs |
315 | mov %bx, %gs |
314 | mov %bx, %gs |
316 | mov %bx, %ds |
315 | mov %bx, %ds |
317 | mov %bx, %ss |
316 | mov %bx, %ss |
318 | 317 | ||
319 | movl $0x0000fffc, %esp |
318 | movl $0x0000fffc, %esp |
320 | movl $0x0000fffc, %ebp |
319 | movl $0x0000fffc, %ebp |
321 | 320 | ||
322 | #define VESA_INFO_SIZE 1024 |
321 | #define VESA_INFO_SIZE 1024 |
323 | 322 | ||
324 | #define VESA_MODE_ATTRIBUTES_OFFSET 0 |
323 | #define VESA_MODE_ATTRIBUTES_OFFSET 0 |
325 | #define VESA_MODE_LIST_PTR_OFFSET 14 |
324 | #define VESA_MODE_LIST_PTR_OFFSET 14 |
326 | #define VESA_MODE_SCANLINE_OFFSET 16 |
325 | #define VESA_MODE_SCANLINE_OFFSET 16 |
327 | #define VESA_MODE_WIDTH_OFFSET 18 |
326 | #define VESA_MODE_WIDTH_OFFSET 18 |
328 | #define VESA_MODE_HEIGHT_OFFSET 20 |
327 | #define VESA_MODE_HEIGHT_OFFSET 20 |
329 | #define VESA_MODE_BPP_OFFSET 25 |
328 | #define VESA_MODE_BPP_OFFSET 25 |
330 | #define VESA_MODE_PHADDR_OFFSET 40 |
329 | #define VESA_MODE_PHADDR_OFFSET 40 |
331 | 330 | ||
332 | #define VESA_END_OF_MODES 0xffff |
331 | #define VESA_END_OF_MODES 0xffff |
333 | 332 | ||
334 | #define VESA_OK 0x4f |
333 | #define VESA_OK 0x4f |
335 | 334 | ||
336 | #define VESA_GET_INFO 0x4f00 |
335 | #define VESA_GET_INFO 0x4f00 |
337 | #define VESA_GET_MODE_INFO 0x4f01 |
336 | #define VESA_GET_MODE_INFO 0x4f01 |
338 | #define VESA_SET_MODE 0x4f02 |
337 | #define VESA_SET_MODE 0x4f02 |
339 | #define VESA_SET_PALETTE 0x4f09 |
338 | #define VESA_SET_PALETTE 0x4f09 |
340 | 339 | ||
341 | #define CONFIG_VESA_BPP_a 255 |
340 | #define CONFIG_VESA_BPP_a 255 |
342 | 341 | ||
343 | #if CONFIG_VESA_BPP == 24 |
342 | #if CONFIG_VESA_BPP == 24 |
344 | #define CONFIG_VESA_BPP_VARIANT 32 |
343 | #define CONFIG_VESA_BPP_VARIANT 32 |
345 | #endif |
344 | #endif |
346 | 345 | ||
347 | mov $VESA_GET_INFO, %ax |
346 | mov $VESA_GET_INFO, %ax |
348 | mov $e_vesa_init - vesa_init, %di |
347 | mov $e_vesa_init - vesa_init, %di |
349 | push %di |
348 | push %di |
350 | int $0x10 |
349 | int $0x10 |
351 | 350 | ||
352 | pop %di |
351 | pop %di |
353 | cmp $VESA_OK, %al |
352 | cmp $VESA_OK, %al |
354 | jnz 0f |
353 | jnz 0f |
355 | 354 | ||
356 | mov 2 + VESA_MODE_LIST_PTR_OFFSET(%di), %si |
355 | mov 2 + VESA_MODE_LIST_PTR_OFFSET(%di), %si |
357 | mov %si, %gs |
356 | mov %si, %gs |
358 | mov VESA_MODE_LIST_PTR_OFFSET(%di), %si |
357 | mov VESA_MODE_LIST_PTR_OFFSET(%di), %si |
359 | 358 | ||
360 | add $VESA_INFO_SIZE, %di |
359 | add $VESA_INFO_SIZE, %di |
361 | 360 | ||
362 | 1:# Try next mode |
361 | 1:# Try next mode |
363 | mov %gs:(%si), %cx |
362 | mov %gs:(%si), %cx |
364 | cmp $VESA_END_OF_MODES, %cx |
363 | cmp $VESA_END_OF_MODES, %cx |
365 | jz 0f |
364 | jz 0f |
366 | 365 | ||
367 | inc %si |
366 | inc %si |
368 | inc %si |
367 | inc %si |
369 | push %cx |
368 | push %cx |
370 | push %di |
369 | push %di |
371 | push %si |
370 | push %si |
372 | mov $VESA_GET_MODE_INFO, %ax |
371 | mov $VESA_GET_MODE_INFO, %ax |
373 | int $0x10 |
372 | int $0x10 |
374 | 373 | ||
375 | pop %si |
374 | pop %si |
376 | pop %di |
375 | pop %di |
377 | pop %cx |
376 | pop %cx |
378 | cmp $VESA_OK, %al |
377 | cmp $VESA_OK, %al |
379 | jnz 0f |
378 | jnz 0f |
380 | 379 | ||
381 | mov $CONFIG_VESA_WIDTH, %ax |
380 | mov $CONFIG_VESA_WIDTH, %ax |
382 | cmp VESA_MODE_WIDTH_OFFSET(%di), %ax |
381 | cmp VESA_MODE_WIDTH_OFFSET(%di), %ax |
383 | jnz 1b |
382 | jnz 1b |
384 | 383 | ||
385 | mov $CONFIG_VESA_HEIGHT, %ax |
384 | mov $CONFIG_VESA_HEIGHT, %ax |
386 | cmp VESA_MODE_HEIGHT_OFFSET(%di), %ax |
385 | cmp VESA_MODE_HEIGHT_OFFSET(%di), %ax |
387 | jnz 1b |
386 | jnz 1b |
388 | 387 | ||
389 | mov $CONFIG_VESA_BPP, %al |
388 | mov $CONFIG_VESA_BPP, %al |
390 | cmp VESA_MODE_BPP_OFFSET(%di), %al |
389 | cmp VESA_MODE_BPP_OFFSET(%di), %al |
391 | 390 | ||
392 | #ifdef CONFIG_VESA_BPP_VARIANT |
391 | #ifdef CONFIG_VESA_BPP_VARIANT |
393 | jz 2f |
392 | jz 2f |
394 | 393 | ||
395 | mov $CONFIG_VESA_BPP_VARIANT, %al |
394 | mov $CONFIG_VESA_BPP_VARIANT, %al |
396 | cmp VESA_MODE_BPP_OFFSET(%di), %al |
395 | cmp VESA_MODE_BPP_OFFSET(%di), %al |
397 | #endif |
396 | #endif |
398 | jnz 1b |
397 | jnz 1b |
399 | 398 | ||
400 | 2: |
399 | 2: |
401 | 400 | ||
402 | mov %cx, %bx |
401 | mov %cx, %bx |
403 | or $0xc000, %bx |
402 | or $0xc000, %bx |
404 | push %di |
403 | push %di |
405 | mov $VESA_SET_MODE, %ax |
404 | mov $VESA_SET_MODE, %ax |
406 | int $0x10 |
405 | int $0x10 |
407 | 406 | ||
408 | pop %di |
407 | pop %di |
409 | cmp $VESA_OK, %al |
408 | cmp $VESA_OK, %al |
410 | jnz 0f |
409 | jnz 0f |
411 | 410 | ||
412 | #if CONFIG_VESA_BPP == 8 |
411 | #if CONFIG_VESA_BPP == 8 |
413 | 412 | ||
414 | # Set 3:2:3 VGA palette |
413 | # Set 3:2:3 VGA palette |
415 | 414 | ||
416 | mov VESA_MODE_ATTRIBUTES_OFFSET(%di), %ax |
415 | mov VESA_MODE_ATTRIBUTES_OFFSET(%di), %ax |
417 | push %di |
416 | push %di |
418 | mov $vga323 - vesa_init, %di |
417 | mov $vga323 - vesa_init, %di |
419 | mov $0x100, %ecx |
418 | mov $0x100, %ecx |
420 | 419 | ||
421 | bt $5, %ax # Test if VGA compatible registers are present |
420 | bt $5, %ax # Test if VGA compatible registers are present |
422 | jnc vga_compat |
421 | jnc vga_compat |
423 | 422 | ||
424 | # Try VESA routine to set palette |
423 | # Try VESA routine to set palette |
425 | 424 | ||
426 | mov $VESA_SET_PALETTE, %ax |
425 | mov $VESA_SET_PALETTE, %ax |
427 | xor %bl, %bl |
426 | xor %bl, %bl |
428 | xor %dx, %dx |
427 | xor %dx, %dx |
429 | int $0x10 |
428 | int $0x10 |
430 | 429 | ||
431 | jmp vga_not_compat |
430 | jmp vga_not_compat |
432 | 431 | ||
433 | vga_compat: |
432 | vga_compat: |
434 | 433 | ||
435 | # Try VGA registers to set palette |
434 | # Try VGA registers to set palette |
436 | 435 | ||
437 | movw $0x3c6, %dx # Set palette mask |
436 | movw $0x3c6, %dx # Set palette mask |
438 | movb $0xff, %al |
437 | movb $0xff, %al |
439 | outb %al, %dx |
438 | outb %al, %dx |
440 | 439 | ||
441 | movw $0x3c8, %dx # First index to set |
440 | movw $0x3c8, %dx # First index to set |
442 | xor %al, %al |
441 | xor %al, %al |
443 | outb %al, %dx |
442 | outb %al, %dx |
444 | 443 | ||
445 | movw $0x3c9, %dx # Data port |
444 | movw $0x3c9, %dx # Data port |
446 | vga_loop: |
445 | vga_loop: |
447 | movb %es:2(%di), %al |
446 | movb %es:2(%di), %al |
448 | outb %al, %dx |
447 | outb %al, %dx |
449 | 448 | ||
450 | movb %es:1(%di), %al |
449 | movb %es:1(%di), %al |
451 | outb %al, %dx |
450 | outb %al, %dx |
452 | 451 | ||
453 | movb %es:(%di), %al |
452 | movb %es:(%di), %al |
454 | outb %al, %dx |
453 | outb %al, %dx |
455 | 454 | ||
456 | addw $4, %di |
455 | addw $4, %di |
457 | loop vga_loop |
456 | loop vga_loop |
458 | 457 | ||
459 | vga_not_compat: |
458 | vga_not_compat: |
460 | 459 | ||
461 | pop %di |
460 | pop %di |
462 | 461 | ||
463 | #endif |
462 | #endif |
464 | 463 | ||
465 | mov VESA_MODE_PHADDR_OFFSET(%di), %esi |
464 | mov VESA_MODE_PHADDR_OFFSET(%di), %esi |
466 | mov VESA_MODE_WIDTH_OFFSET(%di), %ax |
465 | mov VESA_MODE_WIDTH_OFFSET(%di), %ax |
467 | shl $16, %eax |
466 | shl $16, %eax |
468 | mov VESA_MODE_HEIGHT_OFFSET(%di), %ax |
467 | mov VESA_MODE_HEIGHT_OFFSET(%di), %ax |
469 | mov VESA_MODE_BPP_OFFSET(%di), %bl |
468 | mov VESA_MODE_BPP_OFFSET(%di), %bl |
470 | xor %bh, %bh |
469 | xor %bh, %bh |
471 | shl $16, %ebx |
470 | shl $16, %ebx |
472 | mov VESA_MODE_SCANLINE_OFFSET(%di), %bx |
471 | mov VESA_MODE_SCANLINE_OFFSET(%di), %bx |
473 | mov %eax, %edi |
472 | mov %eax, %edi |
474 | 473 | ||
475 | 8: |
474 | 8: |
476 | 475 | ||
477 | mov %cr0, %eax |
476 | mov %cr0, %eax |
478 | or $1, %eax |
477 | or $1, %eax |
479 | mov %eax, %cr0 |
478 | mov %eax, %cr0 |
480 | 479 | ||
481 | jmp 9f |
480 | jmp 9f |
482 | 9: |
481 | 9: |
483 | 482 | ||
484 | ljmpl $gdtselector(KTEXT32_DES), $(vesa_init_protect - vesa_init + VESA_INIT_SEGMENT << 4) |
483 | ljmpl $gdtselector(KTEXT32_DES), $(vesa_init_protect - vesa_init + VESA_INIT_SEGMENT << 4) |
485 | 484 | ||
486 | 0:# No prefered mode found |
485 | 0:# No prefered mode found |
487 | mov $0x111, %cx |
486 | mov $0x111, %cx |
488 | push %di |
487 | push %di |
489 | push %cx |
488 | push %cx |
490 | mov $VESA_GET_MODE_INFO, %ax |
489 | mov $VESA_GET_MODE_INFO, %ax |
491 | int $0x10 |
490 | int $0x10 |
492 | 491 | ||
493 | pop %cx |
492 | pop %cx |
494 | pop %di |
493 | pop %di |
495 | cmp $VESA_OK, %al |
494 | cmp $VESA_OK, %al |
496 | jnz 1f |
495 | jnz 1f |
497 | jz 2b # Force relative jump |
496 | jz 2b # Force relative jump |
498 | 497 | ||
499 | 1: |
498 | 1: |
500 | mov $0x0003, %ax |
499 | mov $0x0003, %ax |
501 | int $0x10 |
500 | int $0x10 |
502 | mov $0xffffffff, %edi # EGA text mode used, because of problems with VESA |
501 | mov $0xffffffff, %edi # EGA text mode used, because of problems with VESA |
503 | xor %ax, %ax |
502 | xor %ax, %ax |
504 | jz 8b # Force relative jump |
503 | jz 8b # Force relative jump |
505 | 504 | ||
506 | vga323: |
505 | vga323: |
507 | #include "vga323.pal" |
506 | #include "vga323.pal" |
508 | 507 | ||
509 | .code32 |
508 | .code32 |
510 | vesa_init_protect: |
509 | vesa_init_protect: |
511 | movw $gdtselector(KDATA_DES), %cx |
510 | movw $gdtselector(KDATA_DES), %cx |
512 | movw %cx, %es |
511 | movw %cx, %es |
513 | movw %cx, %ds # kernel data + stack |
512 | movw %cx, %ds # kernel data + stack |
514 | movw %cx, %ss |
513 | movw %cx, %ss |
515 | # Simics seems to remove hidden part of GS on entering user mode |
514 | # Simics seems to remove hidden part of GS on entering user mode |
516 | # when _visible_ part of GS does not point to user-mode segment |
515 | # when _visible_ part of GS does not point to user-mode segment |
517 | movw $gdtselector(UDATA_DES), %cx |
516 | movw $gdtselector(UDATA_DES), %cx |
518 | movw %cx, %fs |
517 | movw %cx, %fs |
519 | movw %cx, %gs |
518 | movw %cx, %gs |
520 | 519 | ||
521 | movl $START_STACK, %esp # initialize stack pointer |
520 | movl $START_STACK, %esp # initialize stack pointer |
522 | 521 | ||
523 | jmpl $gdtselector(KTEXT32_DES), $vesa_meeting_point |
522 | jmpl $gdtselector(KTEXT32_DES), $vesa_meeting_point |
524 | 523 | ||
525 | .align 4 |
524 | .align 4 |
526 | e_vesa_init: |
525 | e_vesa_init: |
527 | #endif |
526 | #endif |
528 | 527 | ||
529 | # Print string from %esi to EGA display (in red) and halt |
528 | # Print string from %esi to EGA display (in red) and halt |
530 | error_halt: |
529 | error_halt: |
531 | movl $0xb8000, %edi # base of EGA text mode memory |
530 | movl $0xb8000, %edi # base of EGA text mode memory |
532 | xorl %eax, %eax |
531 | xorl %eax, %eax |
533 | 532 | ||
534 | movw $0x3d4, %dx # read bits 8 - 15 of the cursor address |
533 | movw $0x3d4, %dx # read bits 8 - 15 of the cursor address |
535 | movb $0xe, %al |
534 | movb $0xe, %al |
536 | outb %al, %dx |
535 | outb %al, %dx |
537 | 536 | ||
538 | movw $0x3d5, %dx |
537 | movw $0x3d5, %dx |
539 | inb %dx, %al |
538 | inb %dx, %al |
540 | shl $8, %ax |
539 | shl $8, %ax |
541 | 540 | ||
542 | movw $0x3d4, %dx # read bits 0 - 7 of the cursor address |
541 | movw $0x3d4, %dx # read bits 0 - 7 of the cursor address |
543 | movb $0xf, %al |
542 | movb $0xf, %al |
544 | outb %al, %dx |
543 | outb %al, %dx |
545 | 544 | ||
546 | movw $0x3d5, %dx |
545 | movw $0x3d5, %dx |
547 | inb %dx, %al |
546 | inb %dx, %al |
548 | 547 | ||
549 | cmp $1920, %ax |
548 | cmp $1920, %ax |
550 | jbe cursor_ok |
549 | jbe cursor_ok |
551 | movw $1920, %ax # sanity check for the cursor on the last line |
550 | movw $1920, %ax # sanity check for the cursor on the last line |
552 | cursor_ok: |
551 | cursor_ok: |
553 | 552 | ||
554 | movw %ax, %bx |
553 | movw %ax, %bx |
555 | shl $1, %eax |
554 | shl $1, %eax |
556 | addl %eax, %edi |
555 | addl %eax, %edi |
557 | 556 | ||
558 | movw $0x0c00, %ax # black background, light red foreground |
557 | movw $0x0c00, %ax # black background, light red foreground |
559 | cld |
- | |
560 | 558 | ||
561 | ploop: |
559 | ploop: |
562 | lodsb |
560 | lodsb |
563 | cmp $0, %al |
561 | cmp $0, %al |
564 | je ploop_end |
562 | je ploop_end |
565 | stosw |
563 | stosw |
566 | inc %bx |
564 | inc %bx |
567 | jmp ploop |
565 | jmp ploop |
568 | ploop_end: |
566 | ploop_end: |
569 | 567 | ||
570 | movw $0x3d4, %dx # write bits 8 - 15 of the cursor address |
568 | movw $0x3d4, %dx # write bits 8 - 15 of the cursor address |
571 | movb $0xe, %al |
569 | movb $0xe, %al |
572 | outb %al, %dx |
570 | outb %al, %dx |
573 | 571 | ||
574 | movw $0x3d5, %dx |
572 | movw $0x3d5, %dx |
575 | movb %bh, %al |
573 | movb %bh, %al |
576 | outb %al, %dx |
574 | outb %al, %dx |
577 | 575 | ||
578 | movw $0x3d4, %dx # write bits 0 - 7 of the cursor address |
576 | movw $0x3d4, %dx # write bits 0 - 7 of the cursor address |
579 | movb $0xf, %al |
577 | movb $0xf, %al |
580 | outb %al, %dx |
578 | outb %al, %dx |
581 | 579 | ||
582 | movw $0x3d5, %dx |
580 | movw $0x3d5, %dx |
583 | movb %bl, %al |
581 | movb %bl, %al |
584 | outb %al, %dx |
582 | outb %al, %dx |
585 | 583 | ||
586 | cli |
584 | cli |
587 | hlt |
585 | hlt |
588 | 586 | ||
589 | 587 | ||
590 | .section K_INI_PTLS, "aw", @progbits |
588 | .section K_INI_PTLS, "aw", @progbits |
591 | 589 | ||
592 | # |
590 | # |
593 | # Macro for generating initial page table contents. |
591 | # Macro for generating initial page table contents. |
594 | # @param cnt Number of entries to generat. Must be multiple of 8. |
592 | # @param cnt Number of entries to generat. Must be multiple of 8. |
595 | # @param g Number of GB that will be added to the mapping. |
593 | # @param g Number of GB that will be added to the mapping. |
596 | # |
594 | # |
597 | .macro ptl2gen cnt g |
595 | .macro ptl2gen cnt g |
598 | .if \cnt |
596 | .if \cnt |
599 | ptl2gen "\cnt - 8" \g |
597 | ptl2gen "\cnt - 8" \g |
600 | .quad ((\cnt - 8) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
598 | .quad ((\cnt - 8) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
601 | .quad ((\cnt - 7) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
599 | .quad ((\cnt - 7) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
602 | .quad ((\cnt - 6) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
600 | .quad ((\cnt - 6) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
603 | .quad ((\cnt - 5) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
601 | .quad ((\cnt - 5) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
604 | .quad ((\cnt - 4) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
602 | .quad ((\cnt - 4) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
605 | .quad ((\cnt - 3) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
603 | .quad ((\cnt - 3) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
606 | .quad ((\cnt - 2) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
604 | .quad ((\cnt - 2) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
607 | .quad ((\cnt - 1) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
605 | .quad ((\cnt - 1) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
608 | .endif |
606 | .endif |
609 | .endm |
607 | .endm |
610 | 608 | ||
611 | # Page table for pages in the first gigabyte. |
609 | # Page table for pages in the first gigabyte. |
612 | .align 4096 |
610 | .align 4096 |
613 | .global ptl_2_0g |
611 | .global ptl_2_0g |
614 | ptl_2_0g: |
612 | ptl_2_0g: |
615 | ptl2gen 512 0 |
613 | ptl2gen 512 0 |
616 | 614 | ||
617 | # Page table for pages in the second gigabyte. |
615 | # Page table for pages in the second gigabyte. |
618 | .align 4096 |
616 | .align 4096 |
619 | .global ptl_2_1g |
617 | .global ptl_2_1g |
620 | ptl_2_1g: |
618 | ptl_2_1g: |
621 | ptl2gen 512 1 |
619 | ptl2gen 512 1 |
622 | 620 | ||
623 | # Page table for pages in the third gigabyte. |
621 | # Page table for pages in the third gigabyte. |
624 | .align 4096 |
622 | .align 4096 |
625 | .global ptl_2_2g |
623 | .global ptl_2_2g |
626 | ptl_2_2g: |
624 | ptl_2_2g: |
627 | ptl2gen 512 2 |
625 | ptl2gen 512 2 |
628 | 626 | ||
629 | # Page table for pages in the fourth gigabyte. |
627 | # Page table for pages in the fourth gigabyte. |
630 | .align 4096 |
628 | .align 4096 |
631 | .global ptl_2_3g |
629 | .global ptl_2_3g |
632 | ptl_2_3g: |
630 | ptl_2_3g: |
633 | ptl2gen 512 3 |
631 | ptl2gen 512 3 |
634 | 632 | ||
635 | .align 4096 |
633 | .align 4096 |
636 | .global ptl_1 |
634 | .global ptl_1 |
637 | ptl_1: |
635 | ptl_1: |
638 | # Identity mapping for [0; 4G) |
636 | # Identity mapping for [0; 4G) |
639 | .quad ptl_2_0g + (PTL_WRITABLE | PTL_PRESENT) |
637 | .quad ptl_2_0g + (PTL_WRITABLE | PTL_PRESENT) |
640 | .quad ptl_2_1g + (PTL_WRITABLE | PTL_PRESENT) |
638 | .quad ptl_2_1g + (PTL_WRITABLE | PTL_PRESENT) |
641 | .quad ptl_2_2g + (PTL_WRITABLE | PTL_PRESENT) |
639 | .quad ptl_2_2g + (PTL_WRITABLE | PTL_PRESENT) |
642 | .quad ptl_2_3g + (PTL_WRITABLE | PTL_PRESENT) |
640 | .quad ptl_2_3g + (PTL_WRITABLE | PTL_PRESENT) |
643 | .fill 506, 8, 0 |
641 | .fill 506, 8, 0 |
644 | # Mapping of [0; 1G) at -2G |
642 | # Mapping of [0; 1G) at -2G |
645 | .quad ptl_2_0g + (PTL_WRITABLE | PTL_PRESENT) |
643 | .quad ptl_2_0g + (PTL_WRITABLE | PTL_PRESENT) |
646 | .fill 1, 8, 0 |
644 | .fill 1, 8, 0 |
647 | 645 | ||
648 | .align 4096 |
646 | .align 4096 |
649 | .global ptl_0 |
647 | .global ptl_0 |
650 | ptl_0: |
648 | ptl_0: |
651 | .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT) |
649 | .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT) |
652 | .fill 255,8,0 |
650 | .fill 255,8,0 |
653 | .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT) |
651 | .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT) |
654 | .fill 254,8,0 |
652 | .fill 254,8,0 |
655 | .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT) |
653 | .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT) |
656 | 654 | ||
657 | .section K_DATA_START, "aw", @progbits |
655 | .section K_DATA_START, "aw", @progbits |
658 | 656 | ||
659 | .global bootstrap_gdtr |
657 | .global bootstrap_gdtr |
660 | bootstrap_gdtr: |
658 | bootstrap_gdtr: |
661 | .word gdtselector(GDT_ITEMS) |
659 | .word gdtselector(GDT_ITEMS) |
662 | .long KA2PA(gdt) |
660 | .long KA2PA(gdt) |
663 | 661 | ||
664 | grub_eax: |
662 | grub_eax: |
665 | .long 0 |
663 | .long 0 |
666 | 664 | ||
667 | grub_ebx: |
665 | grub_ebx: |
668 | .long 0 |
666 | .long 0 |
669 | 667 | ||
670 | extended_cpuid_msg: |
668 | extended_cpuid_msg: |
671 | .asciz "Extended CPUID not supported. System halted." |
669 | .asciz "Extended CPUID not supported. System halted." |
672 | long_mode_msg: |
670 | long_mode_msg: |
673 | .asciz "64 bit long mode not supported. System halted." |
671 | .asciz "64 bit long mode not supported. System halted." |
674 | noexecute_msg: |
672 | noexecute_msg: |
675 | .asciz "No-execute pages not supported. System halted." |
673 | .asciz "No-execute pages not supported. System halted." |
676 | fx_msg: |
674 | fx_msg: |
677 | .asciz "FXSAVE/FXRESTORE instructions not supported. System halted." |
675 | .asciz "FXSAVE/FXRESTORE instructions not supported. System halted." |
678 | sse2_msg: |
676 | sse2_msg: |
679 | .asciz "SSE2 instructions not supported. System halted." |
677 | .asciz "SSE2 instructions not supported. System halted." |
680 | 678 |