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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 | movl $START_STACK, %esp # initialize stack pointer |
57 | movl $START_STACK, %esp # initialize stack pointer |
58 | lgdtl bootstrap_gdtr # initialize Global Descriptor Table register |
58 | lgdtl bootstrap_gdtr # initialize Global Descriptor Table register |
59 | 59 | ||
60 | movw $gdtselector(KDATA_DES), %cx |
60 | movw $gdtselector(KDATA_DES), %cx |
61 | movw %cx, %es |
61 | movw %cx, %es |
62 | movw %cx, %ds # kernel data + stack |
62 | movw %cx, %ds # kernel data + stack |
63 | movw %cx, %ss |
63 | movw %cx, %ss |
64 | # Simics seems to remove hidden part of GS on entering user mode |
64 | # 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 |
65 | # when _visible_ part of GS does not point to user-mode segment |
66 | movw $gdtselector(UDATA_DES), %cx |
66 | movw $gdtselector(UDATA_DES), %cx |
67 | movw %cx, %fs |
67 | movw %cx, %fs |
68 | movw %cx, %gs |
68 | movw %cx, %gs |
69 | 69 | ||
70 | jmpl $gdtselector(KTEXT32_DES), $multiboot_meeting_point |
70 | jmpl $gdtselector(KTEXT32_DES), $multiboot_meeting_point |
71 | multiboot_meeting_point: |
71 | multiboot_meeting_point: |
72 | 72 | ||
73 | movl %eax, grub_eax # save parameters from GRUB |
73 | movl %eax, grub_eax # save parameters from GRUB |
74 | movl %ebx, grub_ebx |
74 | movl %ebx, grub_ebx |
75 | 75 | ||
76 | # Protected 32-bit. We want to reuse the code-seg descriptor, |
76 | # Protected 32-bit. We want to reuse the code-seg descriptor, |
77 | # the Default operand size must not be 1 when entering long mode |
77 | # the Default operand size must not be 1 when entering long mode |
78 | 78 | ||
79 | movl $(INTEL_CPUID_EXTENDED), %eax |
79 | movl $(INTEL_CPUID_EXTENDED), %eax |
80 | cpuid |
80 | cpuid |
81 | cmp $(INTEL_CPUID_EXTENDED), %eax |
81 | cmp $(INTEL_CPUID_EXTENDED), %eax |
82 | ja extended_cpuid_supported |
82 | ja extended_cpuid_supported |
83 | 83 | ||
84 | movl $extended_cpuid_msg, %esi |
84 | movl $extended_cpuid_msg, %esi |
85 | jmp error_halt |
85 | jmp error_halt |
86 | 86 | ||
87 | extended_cpuid_supported: |
87 | extended_cpuid_supported: |
88 | 88 | ||
89 | movl $(AMD_CPUID_EXTENDED), %eax |
89 | movl $(AMD_CPUID_EXTENDED), %eax |
90 | cpuid |
90 | cpuid |
91 | bt $(AMD_EXT_LONG_MODE), %edx |
91 | bt $(AMD_EXT_LONG_MODE), %edx |
92 | jc long_mode_supported |
92 | jc long_mode_supported |
93 | 93 | ||
94 | movl $long_mode_msg, %esi |
94 | movl $long_mode_msg, %esi |
95 | jmp error_halt |
95 | jmp error_halt |
96 | 96 | ||
97 | long_mode_supported: |
97 | long_mode_supported: |
98 | 98 | ||
99 | bt $(AMD_EXT_NOEXECUTE), %edx |
99 | bt $(AMD_EXT_NOEXECUTE), %edx |
100 | jc noexecute_supported |
100 | jc noexecute_supported |
101 | 101 | ||
102 | movl $noexecute_msg, %esi |
102 | movl $noexecute_msg, %esi |
103 | jmp error_halt |
103 | jmp error_halt |
104 | 104 | ||
105 | noexecute_supported: |
105 | noexecute_supported: |
106 | 106 | ||
107 | movl $(INTEL_CPUID_STANDARD), %eax |
107 | movl $(INTEL_CPUID_STANDARD), %eax |
108 | cpuid |
108 | cpuid |
109 | bt $(INTEL_FXSAVE), %edx |
109 | bt $(INTEL_FXSAVE), %edx |
110 | jc fx_supported |
110 | jc fx_supported |
111 | 111 | ||
112 | movl $fx_msg, %esi |
112 | movl $fx_msg, %esi |
113 | jmp error_halt |
113 | jmp error_halt |
114 | 114 | ||
115 | fx_supported: |
115 | fx_supported: |
116 | 116 | ||
117 | bt $(INTEL_SSE2), %edx |
117 | bt $(INTEL_SSE2), %edx |
118 | jc sse2_supported |
118 | jc sse2_supported |
119 | 119 | ||
120 | movl $sse2_msg, %esi |
120 | movl $sse2_msg, %esi |
121 | jmp error_halt |
121 | jmp error_halt |
122 | 122 | ||
123 | sse2_supported: |
123 | sse2_supported: |
124 | 124 | ||
125 | #ifdef CONFIG_FB |
125 | #ifdef CONFIG_FB |
126 | mov $vesa_init, %esi |
126 | mov $vesa_init, %esi |
127 | mov $VESA_INIT_SEGMENT << 4, %edi |
127 | mov $VESA_INIT_SEGMENT << 4, %edi |
128 | mov $e_vesa_init - vesa_init, %ecx |
128 | mov $e_vesa_init - vesa_init, %ecx |
129 | cld |
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, e801memorysize |
185 | movl %ecx, e801memorysize |
186 | movl %ecx, e820counter |
186 | movl %ecx, e820counter |
187 | 187 | ||
188 | jmp invalid_boot |
188 | jmp invalid_boot |
189 | 189 | ||
190 | valid_boot: |
190 | valid_boot: |
191 | 191 | ||
192 | movl (%ebx), %eax # ebx = physical address of struct multiboot_info |
192 | movl (%ebx), %eax # ebx = physical address of struct multiboot_info |
193 | 193 | ||
194 | bt $0, %eax # mbi->flags[0] (mem_lower, mem_upper valid) |
194 | bt $0, %eax # mbi->flags[0] (mem_lower, mem_upper valid) |
195 | jc mem_valid |
195 | jc mem_valid |
196 | 196 | ||
197 | xorl %ecx, %ecx |
197 | xorl %ecx, %ecx |
198 | jmp mem_invalid |
198 | jmp mem_invalid |
199 | 199 | ||
200 | mem_valid: |
200 | mem_valid: |
201 | movl 4(%ebx), %ecx # mbi->mem_lower |
201 | movl 4(%ebx), %ecx # mbi->mem_lower |
202 | addl 8(%ebx), %ecx # mbi->mem_upper |
202 | addl 8(%ebx), %ecx # mbi->mem_upper |
203 | 203 | ||
204 | mem_invalid: |
204 | mem_invalid: |
205 | movl %ecx, e801memorysize |
205 | movl %ecx, e801memorysize |
206 | 206 | ||
207 | bt $3, %eax # mbi->flags[3] (mods_count, mods_addr valid) |
207 | bt $3, %eax # mbi->flags[3] (mods_count, mods_addr valid) |
208 | jc mods_valid |
208 | jc mods_valid |
209 | 209 | ||
210 | xorq %rcx, %rcx |
210 | xorq %rcx, %rcx |
211 | movq %rcx, init |
211 | movq %rcx, init |
212 | jmp mods_end |
212 | jmp mods_end |
213 | 213 | ||
214 | mods_valid: |
214 | mods_valid: |
215 | 215 | ||
216 | xorq %rcx, %rcx |
216 | xorq %rcx, %rcx |
217 | movl 20(%ebx), %ecx # mbi->mods_count |
217 | movl 20(%ebx), %ecx # mbi->mods_count |
218 | movq %rcx, init |
218 | movq %rcx, init |
219 | 219 | ||
220 | cmpl $0, %ecx |
220 | cmpl $0, %ecx |
221 | je mods_end |
221 | je mods_end |
222 | 222 | ||
223 | movl 24(%ebx), %esi # mbi->mods_addr |
223 | movl 24(%ebx), %esi # mbi->mods_addr |
224 | movq $init, %rdi |
224 | movq $init, %rdi |
225 | 225 | ||
226 | mods_loop: |
226 | mods_loop: |
227 | 227 | ||
228 | xorq %rdx, %rdx |
228 | xorq %rdx, %rdx |
229 | movl 0(%esi), %edx # mods->mod_start |
229 | movl 0(%esi), %edx # mods->mod_start |
230 | movq $0xffff800000000000, %r10 |
230 | movq $0xffff800000000000, %r10 |
231 | addq %r10, %rdx |
231 | addq %r10, %rdx |
232 | movq %rdx, 8(%rdi) |
232 | movq %rdx, 8(%rdi) |
233 | 233 | ||
234 | xorq %rdx, %rdx |
234 | xorq %rdx, %rdx |
235 | movl 4(%esi), %edx |
235 | movl 4(%esi), %edx |
236 | subl 0(%esi), %edx # mods->mod_end - mods->mod_start |
236 | subl 0(%esi), %edx # mods->mod_end - mods->mod_start |
237 | movq %rdx, 16(%rdi) |
237 | movq %rdx, 16(%rdi) |
238 | 238 | ||
239 | addl $16, %esi |
239 | addl $16, %esi |
240 | addq $16, %rdi |
240 | addq $16, %rdi |
241 | 241 | ||
242 | loop mods_loop |
242 | loop mods_loop |
243 | 243 | ||
244 | mods_end: |
244 | mods_end: |
245 | 245 | ||
246 | bt $6, %eax # mbi->flags[6] (mmap_length, mmap_addr valid) |
246 | bt $6, %eax # mbi->flags[6] (mmap_length, mmap_addr valid) |
247 | jc mmap_valid |
247 | jc mmap_valid |
248 | 248 | ||
249 | xorl %edx, %edx |
249 | xorl %edx, %edx |
250 | jmp mmap_invalid |
250 | jmp mmap_invalid |
251 | 251 | ||
252 | mmap_valid: |
252 | mmap_valid: |
253 | movl 44(%ebx), %ecx # mbi->mmap_length |
253 | movl 44(%ebx), %ecx # mbi->mmap_length |
254 | movl 48(%ebx), %esi # mbi->mmap_addr |
254 | movl 48(%ebx), %esi # mbi->mmap_addr |
255 | movq $e820table, %rdi |
255 | movq $e820table, %rdi |
256 | xorl %edx, %edx |
256 | xorl %edx, %edx |
257 | 257 | ||
258 | mmap_loop: |
258 | mmap_loop: |
259 | cmpl $0, %ecx |
259 | cmpl $0, %ecx |
260 | jle mmap_end |
260 | jle mmap_end |
261 | 261 | ||
262 | movl 4(%esi), %eax # mmap->base_addr_low |
262 | movl 4(%esi), %eax # mmap->base_addr_low |
263 | movl %eax, (%rdi) |
263 | movl %eax, (%rdi) |
264 | 264 | ||
265 | movl 8(%esi), %eax # mmap->base_addr_high |
265 | movl 8(%esi), %eax # mmap->base_addr_high |
266 | movl %eax, 4(%rdi) |
266 | movl %eax, 4(%rdi) |
267 | 267 | ||
268 | movl 12(%esi), %eax # mmap->length_low |
268 | movl 12(%esi), %eax # mmap->length_low |
269 | movl %eax, 8(%rdi) |
269 | movl %eax, 8(%rdi) |
270 | 270 | ||
271 | movl 16(%esi), %eax # mmap->length_high |
271 | movl 16(%esi), %eax # mmap->length_high |
272 | movl %eax, 12(%rdi) |
272 | movl %eax, 12(%rdi) |
273 | 273 | ||
274 | movl 20(%esi), %eax # mmap->type |
274 | movl 20(%esi), %eax # mmap->type |
275 | movl %eax, 16(%rdi) |
275 | movl %eax, 16(%rdi) |
276 | 276 | ||
277 | movl (%esi), %eax # mmap->size |
277 | movl (%esi), %eax # mmap->size |
278 | addl $0x4, %eax |
278 | addl $0x4, %eax |
279 | addl %eax, %esi |
279 | addl %eax, %esi |
280 | subl %eax, %ecx |
280 | subl %eax, %ecx |
281 | addq $MEMMAP_E820_RECORD_SIZE, %rdi |
281 | addq $MEMMAP_E820_RECORD_SIZE, %rdi |
282 | incl %edx |
282 | incl %edx |
283 | jmp mmap_loop |
283 | jmp mmap_loop |
284 | 284 | ||
285 | mmap_end: |
285 | mmap_end: |
286 | 286 | ||
287 | mmap_invalid: |
287 | mmap_invalid: |
288 | movl %edx, e820counter |
288 | movl %edx, e820counter |
289 | 289 | ||
290 | invalid_boot: |
290 | invalid_boot: |
291 | 291 | ||
292 | #ifdef CONFIG_SMP |
292 | #ifdef CONFIG_SMP |
293 | 293 | ||
294 | # copy AP bootstrap routines below 1 MB |
294 | # copy AP bootstrap routines below 1 MB |
295 | 295 | ||
296 | movq $BOOT_OFFSET, %rsi |
296 | movq $BOOT_OFFSET, %rsi |
297 | movq $AP_BOOT_OFFSET, %rdi |
297 | movq $AP_BOOT_OFFSET, %rdi |
298 | movq $_hardcoded_unmapped_size, %rcx |
298 | movq $_hardcoded_unmapped_size, %rcx |
299 | cld |
299 | cld |
300 | rep movsb |
300 | rep movsb |
301 | 301 | ||
302 | #endif |
302 | #endif |
303 | 303 | ||
304 | call main_bsp # never returns |
304 | call main_bsp # never returns |
305 | 305 | ||
306 | cli |
306 | cli |
307 | hlt |
307 | hlt |
308 | 308 | ||
309 | #ifdef CONFIG_FB |
309 | #ifdef CONFIG_FB |
310 | .code32 |
310 | .code32 |
311 | vesa_init: |
311 | vesa_init: |
312 | jmp $gdtselector(VESA_INIT_DES), $vesa_init_real - vesa_init |
312 | jmp $gdtselector(VESA_INIT_DES), $vesa_init_real - vesa_init |
313 | 313 | ||
314 | .code16 |
314 | .code16 |
315 | vesa_init_real: |
315 | vesa_init_real: |
316 | 316 | ||
317 | mov %cr0, %eax |
317 | mov %cr0, %eax |
318 | and $~1, %eax |
318 | and $~1, %eax |
319 | mov %eax, %cr0 |
319 | mov %eax, %cr0 |
320 | 320 | ||
321 | jmp $VESA_INIT_SEGMENT, $vesa_init_real2 - vesa_init |
321 | jmp $VESA_INIT_SEGMENT, $vesa_init_real2 - vesa_init |
322 | 322 | ||
323 | vesa_init_real2: |
323 | vesa_init_real2: |
324 | 324 | ||
325 | mov $VESA_INIT_SEGMENT, %bx |
325 | mov $VESA_INIT_SEGMENT, %bx |
326 | 326 | ||
327 | mov %bx, %es |
327 | mov %bx, %es |
328 | mov %bx, %fs |
328 | mov %bx, %fs |
329 | mov %bx, %gs |
329 | mov %bx, %gs |
330 | mov %bx, %ds |
330 | mov %bx, %ds |
331 | mov %bx, %ss |
331 | mov %bx, %ss |
332 | 332 | ||
333 | movl $0x0000fffc, %esp |
333 | movl $0x0000fffc, %esp |
334 | movl $0x0000fffc, %ebp |
334 | movl $0x0000fffc, %ebp |
335 | 335 | ||
336 | #define VESA_INFO_SIZE 1024 |
336 | #define VESA_INFO_SIZE 1024 |
337 | 337 | ||
338 | #define VESA_MODE_ATTRIBUTES_OFFSET 0 |
338 | #define VESA_MODE_ATTRIBUTES_OFFSET 0 |
339 | #define VESA_MODE_LIST_PTR_OFFSET 14 |
339 | #define VESA_MODE_LIST_PTR_OFFSET 14 |
340 | #define VESA_MODE_SCANLINE_OFFSET 16 |
340 | #define VESA_MODE_SCANLINE_OFFSET 16 |
341 | #define VESA_MODE_WIDTH_OFFSET 18 |
341 | #define VESA_MODE_WIDTH_OFFSET 18 |
342 | #define VESA_MODE_HEIGHT_OFFSET 20 |
342 | #define VESA_MODE_HEIGHT_OFFSET 20 |
343 | #define VESA_MODE_BPP_OFFSET 25 |
343 | #define VESA_MODE_BPP_OFFSET 25 |
344 | #define VESA_MODE_PHADDR_OFFSET 40 |
344 | #define VESA_MODE_PHADDR_OFFSET 40 |
345 | 345 | ||
346 | #define VESA_END_OF_MODES 0xffff |
346 | #define VESA_END_OF_MODES 0xffff |
347 | 347 | ||
348 | #define VESA_OK 0x4f |
348 | #define VESA_OK 0x4f |
349 | 349 | ||
350 | #define VESA_GET_INFO 0x4f00 |
350 | #define VESA_GET_INFO 0x4f00 |
351 | #define VESA_GET_MODE_INFO 0x4f01 |
351 | #define VESA_GET_MODE_INFO 0x4f01 |
352 | #define VESA_SET_MODE 0x4f02 |
352 | #define VESA_SET_MODE 0x4f02 |
353 | #define VESA_SET_PALETTE 0x4f09 |
353 | #define VESA_SET_PALETTE 0x4f09 |
354 | 354 | ||
355 | #define CONFIG_VESA_BPP_a 255 |
355 | #define CONFIG_VESA_BPP_a 255 |
356 | 356 | ||
357 | #if CONFIG_VESA_BPP == 24 |
357 | #if CONFIG_VESA_BPP == 24 |
358 | #define CONFIG_VESA_BPP_VARIANT 32 |
358 | #define CONFIG_VESA_BPP_VARIANT 32 |
359 | #endif |
359 | #endif |
360 | 360 | ||
361 | mov $VESA_GET_INFO, %ax |
361 | mov $VESA_GET_INFO, %ax |
362 | mov $e_vesa_init - vesa_init, %di |
362 | mov $e_vesa_init - vesa_init, %di |
363 | push %di |
363 | push %di |
364 | int $0x10 |
364 | int $0x10 |
365 | 365 | ||
366 | pop %di |
366 | pop %di |
367 | cmp $VESA_OK, %al |
367 | cmp $VESA_OK, %al |
368 | jnz 0f |
368 | jnz 0f |
369 | 369 | ||
370 | mov 2 + VESA_MODE_LIST_PTR_OFFSET(%di), %si |
370 | mov 2 + VESA_MODE_LIST_PTR_OFFSET(%di), %si |
371 | mov %si, %gs |
371 | mov %si, %gs |
372 | mov VESA_MODE_LIST_PTR_OFFSET(%di), %si |
372 | mov VESA_MODE_LIST_PTR_OFFSET(%di), %si |
373 | 373 | ||
374 | add $VESA_INFO_SIZE, %di |
374 | add $VESA_INFO_SIZE, %di |
375 | 375 | ||
376 | 1:# Try next mode |
376 | 1:# Try next mode |
377 | mov %gs:(%si), %cx |
377 | mov %gs:(%si), %cx |
378 | cmp $VESA_END_OF_MODES, %cx |
378 | cmp $VESA_END_OF_MODES, %cx |
379 | jz 0f |
379 | jz 0f |
380 | 380 | ||
381 | inc %si |
381 | inc %si |
382 | inc %si |
382 | inc %si |
383 | push %cx |
383 | push %cx |
384 | push %di |
384 | push %di |
385 | push %si |
385 | push %si |
386 | mov $VESA_GET_MODE_INFO, %ax |
386 | mov $VESA_GET_MODE_INFO, %ax |
387 | int $0x10 |
387 | int $0x10 |
388 | 388 | ||
389 | pop %si |
389 | pop %si |
390 | pop %di |
390 | pop %di |
391 | pop %cx |
391 | pop %cx |
392 | cmp $VESA_OK, %al |
392 | cmp $VESA_OK, %al |
393 | jnz 0f |
393 | jnz 0f |
394 | 394 | ||
395 | mov $CONFIG_VESA_WIDTH, %ax |
395 | mov $CONFIG_VESA_WIDTH, %ax |
396 | cmp VESA_MODE_WIDTH_OFFSET(%di), %ax |
396 | cmp VESA_MODE_WIDTH_OFFSET(%di), %ax |
397 | jnz 1b |
397 | jnz 1b |
398 | 398 | ||
399 | mov $CONFIG_VESA_HEIGHT, %ax |
399 | mov $CONFIG_VESA_HEIGHT, %ax |
400 | cmp VESA_MODE_HEIGHT_OFFSET(%di), %ax |
400 | cmp VESA_MODE_HEIGHT_OFFSET(%di), %ax |
401 | jnz 1b |
401 | jnz 1b |
402 | 402 | ||
403 | mov $CONFIG_VESA_BPP, %al |
403 | mov $CONFIG_VESA_BPP, %al |
404 | cmp VESA_MODE_BPP_OFFSET(%di), %al |
404 | cmp VESA_MODE_BPP_OFFSET(%di), %al |
405 | 405 | ||
406 | #ifdef CONFIG_VESA_BPP_VARIANT |
406 | #ifdef CONFIG_VESA_BPP_VARIANT |
407 | jz 2f |
407 | jz 2f |
408 | 408 | ||
409 | mov $CONFIG_VESA_BPP_VARIANT, %al |
409 | mov $CONFIG_VESA_BPP_VARIANT, %al |
410 | cmp VESA_MODE_BPP_OFFSET(%di), %al |
410 | cmp VESA_MODE_BPP_OFFSET(%di), %al |
411 | #endif |
411 | #endif |
412 | jnz 1b |
412 | jnz 1b |
413 | 413 | ||
414 | 2: |
414 | 2: |
415 | 415 | ||
416 | mov %cx, %bx |
416 | mov %cx, %bx |
417 | or $0xc000, %bx |
417 | or $0xc000, %bx |
418 | push %di |
418 | push %di |
419 | mov $VESA_SET_MODE, %ax |
419 | mov $VESA_SET_MODE, %ax |
420 | int $0x10 |
420 | int $0x10 |
421 | 421 | ||
422 | pop %di |
422 | pop %di |
423 | cmp $VESA_OK, %al |
423 | cmp $VESA_OK, %al |
424 | jnz 0f |
424 | jnz 0f |
425 | 425 | ||
426 | #if CONFIG_VESA_BPP == 8 |
426 | #if CONFIG_VESA_BPP == 8 |
427 | 427 | ||
428 | # Set 3:2:3 VGA palette |
428 | # Set 3:2:3 VGA palette |
429 | 429 | ||
430 | mov VESA_MODE_ATTRIBUTES_OFFSET(%di), %ax |
430 | mov VESA_MODE_ATTRIBUTES_OFFSET(%di), %ax |
431 | push %di |
431 | push %di |
432 | mov $vga323 - vesa_init, %di |
432 | mov $vga323 - vesa_init, %di |
433 | mov $0x100, %ecx |
433 | mov $0x100, %ecx |
434 | 434 | ||
435 | bt $5, %ax # Test if VGA compatible registers are present |
435 | bt $5, %ax # Test if VGA compatible registers are present |
436 | jnc vga_compat |
436 | jnc vga_compat |
437 | 437 | ||
438 | # Try VESA routine to set palette |
438 | # Try VESA routine to set palette |
439 | 439 | ||
440 | mov $VESA_SET_PALETTE, %ax |
440 | mov $VESA_SET_PALETTE, %ax |
441 | xor %bl, %bl |
441 | xor %bl, %bl |
442 | xor %dx, %dx |
442 | xor %dx, %dx |
443 | int $0x10 |
443 | int $0x10 |
444 | 444 | ||
445 | jmp vga_not_compat |
445 | jmp vga_not_compat |
446 | 446 | ||
447 | vga_compat: |
447 | vga_compat: |
448 | 448 | ||
449 | # Try VGA registers to set palette |
449 | # Try VGA registers to set palette |
450 | 450 | ||
451 | movw $0x3c6, %dx # Set palette mask |
451 | movw $0x3c6, %dx # Set palette mask |
452 | movb $0xff, %al |
452 | movb $0xff, %al |
453 | outb %al, %dx |
453 | outb %al, %dx |
454 | 454 | ||
455 | movw $0x3c8, %dx # First index to set |
455 | movw $0x3c8, %dx # First index to set |
456 | xor %al, %al |
456 | xor %al, %al |
457 | outb %al, %dx |
457 | outb %al, %dx |
458 | 458 | ||
459 | movw $0x3c9, %dx # Data port |
459 | movw $0x3c9, %dx # Data port |
460 | vga_loop: |
460 | vga_loop: |
461 | movb %es:2(%di), %al |
461 | movb %es:2(%di), %al |
462 | outb %al, %dx |
462 | outb %al, %dx |
463 | 463 | ||
464 | movb %es:1(%di), %al |
464 | movb %es:1(%di), %al |
465 | outb %al, %dx |
465 | outb %al, %dx |
466 | 466 | ||
467 | movb %es:(%di), %al |
467 | movb %es:(%di), %al |
468 | outb %al, %dx |
468 | outb %al, %dx |
469 | 469 | ||
470 | addw $4, %di |
470 | addw $4, %di |
471 | loop vga_loop |
471 | loop vga_loop |
472 | 472 | ||
473 | vga_not_compat: |
473 | vga_not_compat: |
474 | 474 | ||
475 | pop %di |
475 | pop %di |
476 | 476 | ||
477 | #endif |
477 | #endif |
478 | 478 | ||
479 | mov VESA_MODE_PHADDR_OFFSET(%di), %esi |
479 | mov VESA_MODE_PHADDR_OFFSET(%di), %esi |
480 | mov VESA_MODE_WIDTH_OFFSET(%di), %ax |
480 | mov VESA_MODE_WIDTH_OFFSET(%di), %ax |
481 | shl $16, %eax |
481 | shl $16, %eax |
482 | mov VESA_MODE_HEIGHT_OFFSET(%di), %ax |
482 | mov VESA_MODE_HEIGHT_OFFSET(%di), %ax |
483 | mov VESA_MODE_BPP_OFFSET(%di), %bl |
483 | mov VESA_MODE_BPP_OFFSET(%di), %bl |
484 | xor %bh, %bh |
484 | xor %bh, %bh |
485 | shl $16, %ebx |
485 | shl $16, %ebx |
486 | mov VESA_MODE_SCANLINE_OFFSET(%di), %bx |
486 | mov VESA_MODE_SCANLINE_OFFSET(%di), %bx |
487 | mov %eax, %edi |
487 | mov %eax, %edi |
488 | 488 | ||
489 | 8: |
489 | 8: |
490 | 490 | ||
491 | mov %cr0, %eax |
491 | mov %cr0, %eax |
492 | or $1, %eax |
492 | or $1, %eax |
493 | mov %eax, %cr0 |
493 | mov %eax, %cr0 |
494 | 494 | ||
495 | jmp 9f |
495 | jmp 9f |
496 | 9: |
496 | 9: |
497 | 497 | ||
498 | ljmpl $gdtselector(KTEXT32_DES), $(vesa_init_protect - vesa_init + VESA_INIT_SEGMENT << 4) |
498 | ljmpl $gdtselector(KTEXT32_DES), $(vesa_init_protect - vesa_init + VESA_INIT_SEGMENT << 4) |
499 | 499 | ||
500 | 0:# No prefered mode found |
500 | 0:# No prefered mode found |
501 | mov $0x111, %cx |
501 | mov $0x111, %cx |
502 | push %di |
502 | push %di |
503 | push %cx |
503 | push %cx |
504 | mov $VESA_GET_MODE_INFO, %ax |
504 | mov $VESA_GET_MODE_INFO, %ax |
505 | int $0x10 |
505 | int $0x10 |
506 | 506 | ||
507 | pop %cx |
507 | pop %cx |
508 | pop %di |
508 | pop %di |
509 | cmp $VESA_OK, %al |
509 | cmp $VESA_OK, %al |
510 | jnz 1f |
510 | jnz 1f |
511 | jz 2b # Force relative jump |
511 | jz 2b # Force relative jump |
512 | 512 | ||
513 | 1: |
513 | 1: |
514 | mov $0x0003, %ax |
514 | mov $0x0003, %ax |
515 | int $0x10 |
515 | int $0x10 |
516 | mov $0xffffffff, %edi # EGA text mode used, because of problems with VESA |
516 | mov $0xffffffff, %edi # EGA text mode used, because of problems with VESA |
517 | xor %ax, %ax |
517 | xor %ax, %ax |
518 | jz 8b # Force relative jump |
518 | jz 8b # Force relative jump |
519 | 519 | ||
520 | vga323: |
520 | vga323: |
521 | #include "vga323.pal" |
521 | #include "vga323.pal" |
522 | 522 | ||
523 | .code32 |
523 | .code32 |
524 | vesa_init_protect: |
524 | vesa_init_protect: |
525 | movw $gdtselector(KDATA_DES), %cx |
525 | movw $gdtselector(KDATA_DES), %cx |
526 | movw %cx, %es |
526 | movw %cx, %es |
527 | movw %cx, %ds # kernel data + stack |
527 | movw %cx, %ds # kernel data + stack |
528 | movw %cx, %ss |
528 | movw %cx, %ss |
529 | # Simics seems to remove hidden part of GS on entering user mode |
529 | # Simics seems to remove hidden part of GS on entering user mode |
530 | # when _visible_ part of GS does not point to user-mode segment |
530 | # when _visible_ part of GS does not point to user-mode segment |
531 | movw $gdtselector(UDATA_DES), %cx |
531 | movw $gdtselector(UDATA_DES), %cx |
532 | movw %cx, %fs |
532 | movw %cx, %fs |
533 | movw %cx, %gs |
533 | movw %cx, %gs |
534 | 534 | ||
535 | movl $START_STACK, %esp # initialize stack pointer |
535 | movl $START_STACK, %esp # initialize stack pointer |
536 | 536 | ||
537 | jmpl $gdtselector(KTEXT32_DES), $vesa_meeting_point |
537 | jmpl $gdtselector(KTEXT32_DES), $vesa_meeting_point |
538 | 538 | ||
539 | .align 4 |
539 | .align 4 |
540 | e_vesa_init: |
540 | e_vesa_init: |
541 | #endif |
541 | #endif |
542 | 542 | ||
543 | # Print string from %esi to EGA display (in red) and halt |
543 | # Print string from %esi to EGA display (in red) and halt |
544 | error_halt: |
544 | error_halt: |
545 | movl $0xb8000, %edi # base of EGA text mode memory |
545 | movl $0xb8000, %edi # base of EGA text mode memory |
546 | xorl %eax, %eax |
546 | xorl %eax, %eax |
547 | 547 | ||
548 | movw $0x3d4, %dx # read bits 8 - 15 of the cursor address |
548 | movw $0x3d4, %dx # read bits 8 - 15 of the cursor address |
549 | movb $0xe, %al |
549 | movb $0xe, %al |
550 | outb %al, %dx |
550 | outb %al, %dx |
551 | 551 | ||
552 | movw $0x3d5, %dx |
552 | movw $0x3d5, %dx |
553 | inb %dx, %al |
553 | inb %dx, %al |
554 | shl $8, %ax |
554 | shl $8, %ax |
555 | 555 | ||
556 | movw $0x3d4, %dx # read bits 0 - 7 of the cursor address |
556 | movw $0x3d4, %dx # read bits 0 - 7 of the cursor address |
557 | movb $0xf, %al |
557 | movb $0xf, %al |
558 | outb %al, %dx |
558 | outb %al, %dx |
559 | 559 | ||
560 | movw $0x3d5, %dx |
560 | movw $0x3d5, %dx |
561 | inb %dx, %al |
561 | inb %dx, %al |
562 | 562 | ||
563 | cmp $1920, %ax |
563 | cmp $1920, %ax |
564 | jbe cursor_ok |
564 | jbe cursor_ok |
565 | movw $1920, %ax # sanity check for the cursor on the last line |
565 | movw $1920, %ax # sanity check for the cursor on the last line |
566 | cursor_ok: |
566 | cursor_ok: |
567 | 567 | ||
568 | movw %ax, %bx |
568 | movw %ax, %bx |
569 | shl $1, %eax |
569 | shl $1, %eax |
570 | addl %eax, %edi |
570 | addl %eax, %edi |
571 | 571 | ||
572 | movw $0x0c00, %ax # black background, light red foreground |
572 | movw $0x0c00, %ax # black background, light red foreground |
573 | cld |
573 | cld |
574 | 574 | ||
575 | ploop: |
575 | ploop: |
576 | lodsb |
576 | lodsb |
577 | cmp $0, %al |
577 | cmp $0, %al |
578 | je ploop_end |
578 | je ploop_end |
579 | stosw |
579 | stosw |
580 | inc %bx |
580 | inc %bx |
581 | jmp ploop |
581 | jmp ploop |
582 | ploop_end: |
582 | ploop_end: |
583 | 583 | ||
584 | movw $0x3d4, %dx # write bits 8 - 15 of the cursor address |
584 | movw $0x3d4, %dx # write bits 8 - 15 of the cursor address |
585 | movb $0xe, %al |
585 | movb $0xe, %al |
586 | outb %al, %dx |
586 | outb %al, %dx |
587 | 587 | ||
588 | movw $0x3d5, %dx |
588 | movw $0x3d5, %dx |
589 | movb %bh, %al |
589 | movb %bh, %al |
590 | outb %al, %dx |
590 | outb %al, %dx |
591 | 591 | ||
592 | movw $0x3d4, %dx # write bits 0 - 7 of the cursor address |
592 | movw $0x3d4, %dx # write bits 0 - 7 of the cursor address |
593 | movb $0xf, %al |
593 | movb $0xf, %al |
594 | outb %al, %dx |
594 | outb %al, %dx |
595 | 595 | ||
596 | movw $0x3d5, %dx |
596 | movw $0x3d5, %dx |
597 | movb %bl, %al |
597 | movb %bl, %al |
598 | outb %al, %dx |
598 | outb %al, %dx |
599 | 599 | ||
600 | cli |
600 | cli |
601 | hlt |
601 | hlt |
602 | 602 | ||
603 | 603 | ||
604 | .section K_INI_PTLS, "aw", @progbits |
604 | .section K_INI_PTLS, "aw", @progbits |
605 | 605 | ||
606 | # |
606 | # |
607 | # Macro for generating initial page table contents. |
607 | # Macro for generating initial page table contents. |
608 | # @param cnt Number of entries to generat. Must be multiple of 8. |
608 | # @param cnt Number of entries to generat. Must be multiple of 8. |
609 | # @param g Number of GB that will be added to the mapping. |
609 | # @param g Number of GB that will be added to the mapping. |
610 | # |
610 | # |
611 | .macro ptl2gen cnt g |
611 | .macro ptl2gen cnt g |
612 | .if \cnt |
612 | .if \cnt |
613 | ptl2gen "\cnt - 8" \g |
613 | ptl2gen "\cnt - 8" \g |
614 | .quad ((\cnt - 8) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
614 | .quad ((\cnt - 8) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
615 | .quad ((\cnt - 7) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
615 | .quad ((\cnt - 7) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
616 | .quad ((\cnt - 6) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
616 | .quad ((\cnt - 6) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
617 | .quad ((\cnt - 5) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
617 | .quad ((\cnt - 5) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
618 | .quad ((\cnt - 4) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
618 | .quad ((\cnt - 4) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
619 | .quad ((\cnt - 3) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
619 | .quad ((\cnt - 3) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
620 | .quad ((\cnt - 2) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
620 | .quad ((\cnt - 2) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
621 | .quad ((\cnt - 1) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
621 | .quad ((\cnt - 1) * 0x200000) + (\g * 1024 * 1024 * 1024) | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
622 | .endif |
622 | .endif |
623 | .endm |
623 | .endm |
624 | 624 | ||
625 | # Page table for pages in the first gigabyte. |
625 | # Page table for pages in the first gigabyte. |
626 | .align 4096 |
626 | .align 4096 |
627 | .global ptl_2_0g |
627 | .global ptl_2_0g |
628 | ptl_2_0g: |
628 | ptl_2_0g: |
629 | ptl2gen 512 0 |
629 | ptl2gen 512 0 |
630 | 630 | ||
631 | # Page table for pages in the second gigabyte. |
631 | # Page table for pages in the second gigabyte. |
632 | .align 4096 |
632 | .align 4096 |
633 | .global ptl_2_1g |
633 | .global ptl_2_1g |
634 | ptl_2_1g: |
634 | ptl_2_1g: |
635 | ptl2gen 512 1 |
635 | ptl2gen 512 1 |
636 | 636 | ||
637 | # Page table for pages in the third gigabyte. |
637 | # Page table for pages in the third gigabyte. |
638 | .align 4096 |
638 | .align 4096 |
639 | .global ptl_2_2g |
639 | .global ptl_2_2g |
640 | ptl_2_2g: |
640 | ptl_2_2g: |
641 | ptl2gen 512 2 |
641 | ptl2gen 512 2 |
642 | 642 | ||
643 | # Page table for pages in the fourth gigabyte. |
643 | # Page table for pages in the fourth gigabyte. |
644 | .align 4096 |
644 | .align 4096 |
645 | .global ptl_2_3g |
645 | .global ptl_2_3g |
646 | ptl_2_3g: |
646 | ptl_2_3g: |
647 | ptl2gen 512 3 |
647 | ptl2gen 512 3 |
648 | 648 | ||
649 | .align 4096 |
649 | .align 4096 |
650 | .global ptl_1 |
650 | .global ptl_1 |
651 | ptl_1: |
651 | ptl_1: |
652 | # Identity mapping for [0; 4G) |
652 | # Identity mapping for [0; 4G) |
653 | .quad ptl_2_0g + (PTL_WRITABLE | PTL_PRESENT) |
653 | .quad ptl_2_0g + (PTL_WRITABLE | PTL_PRESENT) |
654 | .quad ptl_2_1g + (PTL_WRITABLE | PTL_PRESENT) |
654 | .quad ptl_2_1g + (PTL_WRITABLE | PTL_PRESENT) |
655 | .quad ptl_2_2g + (PTL_WRITABLE | PTL_PRESENT) |
655 | .quad ptl_2_2g + (PTL_WRITABLE | PTL_PRESENT) |
656 | .quad ptl_2_3g + (PTL_WRITABLE | PTL_PRESENT) |
656 | .quad ptl_2_3g + (PTL_WRITABLE | PTL_PRESENT) |
657 | .fill 506, 8, 0 |
657 | .fill 506, 8, 0 |
658 | # Mapping of [0; 1G) at -2G |
658 | # Mapping of [0; 1G) at -2G |
659 | .quad ptl_2_0g + (PTL_WRITABLE | PTL_PRESENT) |
659 | .quad ptl_2_0g + (PTL_WRITABLE | PTL_PRESENT) |
660 | .fill 1, 8, 0 |
660 | .fill 1, 8, 0 |
661 | 661 | ||
662 | .align 4096 |
662 | .align 4096 |
663 | .global ptl_0 |
663 | .global ptl_0 |
664 | ptl_0: |
664 | ptl_0: |
665 | .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT) |
665 | .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT) |
666 | .fill 255,8,0 |
666 | .fill 255,8,0 |
667 | .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT) |
667 | .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT) |
668 | .fill 254,8,0 |
668 | .fill 254,8,0 |
669 | .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT) |
669 | .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT) |
670 | 670 | ||
671 | .section K_DATA_START, "aw", @progbits |
671 | .section K_DATA_START, "aw", @progbits |
672 | 672 | ||
673 | .global bootstrap_gdtr |
673 | .global bootstrap_gdtr |
674 | bootstrap_gdtr: |
674 | bootstrap_gdtr: |
675 | .word gdtselector(GDT_ITEMS) |
675 | .word gdtselector(GDT_ITEMS) |
676 | .long KA2PA(gdt) |
676 | .long KA2PA(gdt) |
677 | 677 | ||
678 | grub_eax: |
678 | grub_eax: |
679 | .long 0 |
679 | .long 0 |
680 | 680 | ||
681 | grub_ebx: |
681 | grub_ebx: |
682 | .long 0 |
682 | .long 0 |
683 | 683 | ||
684 | extended_cpuid_msg: |
684 | extended_cpuid_msg: |
685 | .asciz "Extended CPUID not supported. System halted." |
685 | .asciz "Extended CPUID not supported. System halted." |
686 | long_mode_msg: |
686 | long_mode_msg: |
687 | .asciz "64 bit long mode not supported. System halted." |
687 | .asciz "64 bit long mode not supported. System halted." |
688 | noexecute_msg: |
688 | noexecute_msg: |
689 | .asciz "No-execute pages not supported. System halted." |
689 | .asciz "No-execute pages not supported. System halted." |
690 | fx_msg: |
690 | fx_msg: |
691 | .asciz "FXSAVE/FXRESTORE instructions not supported. System halted." |
691 | .asciz "FXSAVE/FXRESTORE instructions not supported. System halted." |
692 | sse2_msg: |
692 | sse2_msg: |
693 | .asciz "SSE2 instructions not supported. System halted." |
693 | .asciz "SSE2 instructions not supported. System halted." |
694 | 694 |