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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 |
75 | #ifdef CONFIG_FB |
76 | mov $vesa_init, %esi; |
76 | mov $vesa_init, %esi; |
77 | mov $VESA_INIT_SEGMENT << 4, %edi |
77 | mov $VESA_INIT_SEGMENT << 4, %edi |
78 | mov $e_vesa_init - vesa_init, %ecx |
78 | mov $e_vesa_init - vesa_init, %ecx |
79 | cld |
79 | cld |
80 | rep movsb |
80 | rep movsb |
81 | 81 | ||
82 | mov $VESA_INIT_SEGMENT << 4, %edi |
82 | mov $VESA_INIT_SEGMENT << 4, %edi |
83 | jmpl *%edi |
83 | jmpl *%edi |
84 | 84 | ||
85 | vesa_meeting_point: |
85 | vesa_meeting_point: |
86 | 86 | ||
87 | mov %esi, KA2PA(vesa_ph_addr) |
87 | mov %esi, KA2PA(vesa_ph_addr) |
88 | mov %di, KA2PA(vesa_height) |
88 | mov %di, KA2PA(vesa_height) |
89 | shr $16, %edi |
89 | shr $16, %edi |
90 | mov %di, KA2PA(vesa_width) |
90 | mov %di, KA2PA(vesa_width) |
91 | mov %bx, KA2PA(vesa_scanline) |
91 | mov %bx, KA2PA(vesa_scanline) |
92 | shr $16, %ebx |
92 | shr $16, %ebx |
93 | mov %bx, KA2PA(vesa_bpp) |
93 | mov %bx, KA2PA(vesa_bpp) |
94 | #endif |
94 | #endif |
95 | 95 | ||
96 | # Protected 32-bit. We want to reuse the code-seg descriptor, |
96 | # Protected 32-bit. We want to reuse the code-seg descriptor, |
97 | # the Default operand size must not be 1 when entering long mode |
97 | # the Default operand size must not be 1 when entering long mode |
98 | 98 | ||
99 | movl $0x80000000, %eax |
99 | movl $0x80000000, %eax |
100 | cpuid |
100 | cpuid |
101 | cmp $0x80000000, %eax # any function > 80000000h? |
101 | cmp $0x80000000, %eax # any function > 80000000h? |
102 | jbe long_mode_unsupported |
102 | jbe long_mode_unsupported |
103 | movl $(AMD_CPUID_EXTENDED), %eax # Extended function code 80000001 |
103 | movl $(AMD_CPUID_EXTENDED), %eax # Extended function code 80000001 |
104 | cpuid |
104 | cpuid |
105 | bt $29, %edx # Test if long mode is supported. |
105 | bt $29, %edx # Test if long mode is supported. |
106 | jc long_mode_supported |
106 | jc long_mode_supported |
107 | 107 | ||
108 | long_mode_unsupported: |
108 | long_mode_unsupported: |
109 | cli |
109 | cli |
110 | hlt |
110 | hlt |
111 | 111 | ||
112 | long_mode_supported: |
112 | long_mode_supported: |
113 | 113 | ||
114 | # Enable 64-bit page transaltion entries - CR4.PAE = 1. |
114 | # Enable 64-bit page transaltion entries - CR4.PAE = 1. |
115 | # Paging is not enabled until after long mode is enabled |
115 | # Paging is not enabled until after long mode is enabled |
116 | 116 | ||
117 | movl %cr4, %eax |
117 | movl %cr4, %eax |
118 | btsl $5, %eax |
118 | btsl $5, %eax |
119 | movl %eax, %cr4 |
119 | movl %eax, %cr4 |
120 | 120 | ||
121 | # Set up paging tables |
121 | # Set up paging tables |
122 | 122 | ||
123 | leal ptl_0, %eax |
123 | leal ptl_0, %eax |
124 | movl %eax, %cr3 |
124 | movl %eax, %cr3 |
125 | 125 | ||
126 | # Enable long mode |
126 | # Enable long mode |
127 | 127 | ||
128 | movl $EFER_MSR_NUM, %ecx # EFER MSR number |
128 | movl $EFER_MSR_NUM, %ecx # EFER MSR number |
129 | rdmsr # Read EFER |
129 | rdmsr # Read EFER |
130 | btsl $AMD_LME_FLAG, %eax # Set LME=1 |
130 | btsl $AMD_LME_FLAG, %eax # Set LME=1 |
131 | wrmsr # Write EFER |
131 | wrmsr # Write EFER |
132 | 132 | ||
133 | # Enable paging to activate long mode (set CR0.PG=1) |
133 | # Enable paging to activate long mode (set CR0.PG=1) |
134 | 134 | ||
135 | movl %cr0, %eax |
135 | movl %cr0, %eax |
136 | btsl $31, %eax |
136 | btsl $31, %eax |
137 | movl %eax, %cr0 |
137 | movl %eax, %cr0 |
138 | 138 | ||
139 | # At this point we are in compatibility mode |
139 | # At this point we are in compatibility mode |
140 | 140 | ||
141 | jmpl $gdtselector(KTEXT_DES), $start64 |
141 | jmpl $gdtselector(KTEXT_DES), $start64 |
142 | 142 | ||
143 | .code64 |
143 | .code64 |
144 | start64: |
144 | start64: |
145 | movq $(PA2KA(START_STACK)), %rsp |
145 | movq $(PA2KA(START_STACK)), %rsp |
146 | movl grub_eax, %eax |
146 | movl grub_eax, %eax |
147 | movl grub_ebx, %ebx |
147 | movl grub_ebx, %ebx |
148 | 148 | ||
149 | cmpl $MULTIBOOT_LOADER_MAGIC, %eax # compare GRUB signature |
149 | cmpl $MULTIBOOT_LOADER_MAGIC, %eax # compare GRUB signature |
150 | je valid_boot |
150 | je valid_boot |
151 | 151 | ||
152 | xorl %ecx, %ecx # no memory size or map available |
152 | xorl %ecx, %ecx # no memory size or map available |
153 | movl %ecx, e801memorysize |
153 | movl %ecx, e801memorysize |
154 | movl %ecx, e820counter |
154 | movl %ecx, e820counter |
155 | 155 | ||
156 | jmp invalid_boot |
156 | jmp invalid_boot |
157 | 157 | ||
158 | valid_boot: |
158 | valid_boot: |
159 | 159 | ||
160 | movl (%ebx), %eax # ebx = physical address of struct multiboot_info |
160 | movl (%ebx), %eax # ebx = physical address of struct multiboot_info |
161 | 161 | ||
162 | bt $0, %eax # mbi->flags[0] (mem_lower, mem_upper valid) |
162 | bt $0, %eax # mbi->flags[0] (mem_lower, mem_upper valid) |
163 | jc mem_valid |
163 | jc mem_valid |
164 | 164 | ||
165 | xorl %ecx, %ecx |
165 | xorl %ecx, %ecx |
166 | jmp mem_invalid |
166 | jmp mem_invalid |
167 | 167 | ||
168 | mem_valid: |
168 | mem_valid: |
169 | movl 4(%ebx), %ecx # mbi->mem_lower |
169 | movl 4(%ebx), %ecx # mbi->mem_lower |
170 | addl 8(%ebx), %ecx # mbi->mem_upper |
170 | addl 8(%ebx), %ecx # mbi->mem_upper |
171 | 171 | ||
172 | mem_invalid: |
172 | mem_invalid: |
173 | movl %ecx, e801memorysize |
173 | movl %ecx, e801memorysize |
174 | 174 | ||
175 | bt $3, %eax # mbi->flags[3] (mods_count, mods_addr valid) |
175 | bt $3, %eax # mbi->flags[3] (mods_count, mods_addr valid) |
176 | jc mods_valid |
176 | jc mods_valid |
177 | 177 | ||
178 | xorq %rcx, %rcx |
178 | xorq %rcx, %rcx |
179 | movq %rcx, init |
179 | movq %rcx, init |
180 | jmp mods_end |
180 | jmp mods_end |
181 | 181 | ||
182 | mods_valid: |
182 | mods_valid: |
183 | 183 | ||
184 | xorq %rcx, %rcx |
184 | xorq %rcx, %rcx |
185 | movl 20(%ebx), %ecx # mbi->mods_count |
185 | movl 20(%ebx), %ecx # mbi->mods_count |
186 | movq %rcx, init |
186 | movq %rcx, init |
187 | 187 | ||
188 | cmpl $0, %ecx |
188 | cmpl $0, %ecx |
189 | je mods_end |
189 | je mods_end |
190 | 190 | ||
191 | movl 24(%ebx), %esi # mbi->mods_addr |
191 | movl 24(%ebx), %esi # mbi->mods_addr |
192 | movq $init, %rdi |
192 | movq $init, %rdi |
193 | 193 | ||
194 | mods_loop: |
194 | mods_loop: |
195 | 195 | ||
196 | xorq %rdx, %rdx |
196 | xorq %rdx, %rdx |
197 | movl 0(%esi), %edx # mods->mod_start |
197 | movl 0(%esi), %edx # mods->mod_start |
198 | movq $0xffff800000000000, %r10 |
198 | movq $0xffff800000000000, %r10 |
199 | addq %r10, %rdx |
199 | addq %r10, %rdx |
200 | movq %rdx, 8(%rdi) |
200 | movq %rdx, 8(%rdi) |
201 | 201 | ||
202 | xorq %rdx, %rdx |
202 | xorq %rdx, %rdx |
203 | movl 4(%esi), %edx |
203 | movl 4(%esi), %edx |
204 | subl 0(%esi), %edx # mods->mod_end - mods->mod_start |
204 | subl 0(%esi), %edx # mods->mod_end - mods->mod_start |
205 | movq %rdx, 16(%rdi) |
205 | movq %rdx, 16(%rdi) |
206 | 206 | ||
207 | addl $16, %esi |
207 | addl $16, %esi |
208 | addq $16, %rdi |
208 | addq $16, %rdi |
209 | 209 | ||
210 | loop mods_loop |
210 | loop mods_loop |
211 | 211 | ||
212 | mods_end: |
212 | mods_end: |
213 | 213 | ||
214 | bt $6, %eax # mbi->flags[6] (mmap_length, mmap_addr valid) |
214 | bt $6, %eax # mbi->flags[6] (mmap_length, mmap_addr valid) |
215 | jc mmap_valid |
215 | jc mmap_valid |
216 | 216 | ||
217 | xorl %edx, %edx |
217 | xorl %edx, %edx |
218 | jmp mmap_invalid |
218 | jmp mmap_invalid |
219 | 219 | ||
220 | mmap_valid: |
220 | mmap_valid: |
221 | movl 44(%ebx), %ecx # mbi->mmap_length |
221 | movl 44(%ebx), %ecx # mbi->mmap_length |
222 | movl 48(%ebx), %esi # mbi->mmap_addr |
222 | movl 48(%ebx), %esi # mbi->mmap_addr |
223 | movq $e820table, %rdi |
223 | movq $e820table, %rdi |
224 | xorl %edx, %edx |
224 | xorl %edx, %edx |
225 | 225 | ||
226 | mmap_loop: |
226 | mmap_loop: |
227 | cmpl $0, %ecx |
227 | cmpl $0, %ecx |
228 | jle mmap_end |
228 | jle mmap_end |
229 | 229 | ||
230 | movl 4(%esi), %eax # mmap->base_addr_low |
230 | movl 4(%esi), %eax # mmap->base_addr_low |
231 | movl %eax, (%rdi) |
231 | movl %eax, (%rdi) |
232 | 232 | ||
233 | movl 8(%esi), %eax # mmap->base_addr_high |
233 | movl 8(%esi), %eax # mmap->base_addr_high |
234 | movl %eax, 4(%rdi) |
234 | movl %eax, 4(%rdi) |
235 | 235 | ||
236 | movl 12(%esi), %eax # mmap->length_low |
236 | movl 12(%esi), %eax # mmap->length_low |
237 | movl %eax, 8(%rdi) |
237 | movl %eax, 8(%rdi) |
238 | 238 | ||
239 | movl 16(%esi), %eax # mmap->length_high |
239 | movl 16(%esi), %eax # mmap->length_high |
240 | movl %eax, 12(%rdi) |
240 | movl %eax, 12(%rdi) |
241 | 241 | ||
242 | movl 20(%esi), %eax # mmap->type |
242 | movl 20(%esi), %eax # mmap->type |
243 | movl %eax, 16(%rdi) |
243 | movl %eax, 16(%rdi) |
244 | 244 | ||
245 | movl (%esi), %eax # mmap->size |
245 | movl (%esi), %eax # mmap->size |
246 | addl $0x4, %eax |
246 | addl $0x4, %eax |
247 | addl %eax, %esi |
247 | addl %eax, %esi |
248 | subl %eax, %ecx |
248 | subl %eax, %ecx |
249 | addq $MEMMAP_E820_RECORD_SIZE, %rdi |
249 | addq $MEMMAP_E820_RECORD_SIZE, %rdi |
250 | incl %edx |
250 | incl %edx |
251 | jmp mmap_loop |
251 | jmp mmap_loop |
252 | 252 | ||
253 | mmap_end: |
253 | mmap_end: |
254 | 254 | ||
255 | mmap_invalid: |
255 | mmap_invalid: |
256 | movl %edx, e820counter |
256 | movl %edx, e820counter |
257 | 257 | ||
258 | invalid_boot: |
258 | invalid_boot: |
259 | 259 | ||
260 | #ifdef CONFIG_SMP |
260 | #ifdef CONFIG_SMP |
261 | 261 | ||
262 | # copy AP bootstrap routines below 1 MB |
262 | # copy AP bootstrap routines below 1 MB |
263 | 263 | ||
264 | movq $BOOT_OFFSET, %rsi |
264 | movq $BOOT_OFFSET, %rsi |
265 | movq $AP_BOOT_OFFSET, %rdi |
265 | movq $AP_BOOT_OFFSET, %rdi |
266 | movq $_hardcoded_unmapped_size, %rcx |
266 | movq $_hardcoded_unmapped_size, %rcx |
267 | cld |
267 | cld |
268 | rep movsb |
268 | rep movsb |
269 | 269 | ||
270 | #endif |
270 | #endif |
271 | 271 | ||
272 | call main_bsp # never returns |
272 | call main_bsp # never returns |
273 | 273 | ||
274 | cli |
274 | cli |
275 | hlt |
275 | hlt |
276 | 276 | ||
277 | #ifdef CONFIG_FB |
277 | #ifdef CONFIG_FB |
278 | .code32 |
278 | .code32 |
279 | vesa_init: |
279 | vesa_init: |
280 | jmp $gdtselector(VESA_INIT_DES), $vesa_init_real - vesa_init |
280 | jmp $gdtselector(VESA_INIT_DES), $vesa_init_real - vesa_init |
281 | 281 | ||
282 | .code16 |
282 | .code16 |
283 | vesa_init_real: |
283 | vesa_init_real: |
284 | 284 | ||
285 | mov %cr0, %eax |
285 | mov %cr0, %eax |
286 | and $~1, %eax |
286 | and $~1, %eax |
287 | mov %eax, %cr0 |
287 | mov %eax, %cr0 |
288 | 288 | ||
289 | jmp $VESA_INIT_SEGMENT, $vesa_init_real2 - vesa_init |
289 | jmp $VESA_INIT_SEGMENT, $vesa_init_real2 - vesa_init |
290 | 290 | ||
291 | vesa_init_real2: |
291 | vesa_init_real2: |
292 | 292 | ||
293 | mov $VESA_INIT_SEGMENT, %bx |
293 | mov $VESA_INIT_SEGMENT, %bx |
294 | 294 | ||
295 | mov %bx, %es |
295 | mov %bx, %es |
296 | mov %bx, %fs |
296 | mov %bx, %fs |
297 | mov %bx, %gs |
297 | mov %bx, %gs |
298 | mov %bx, %ds |
298 | mov %bx, %ds |
299 | mov %bx, %ss |
299 | mov %bx, %ss |
300 | 300 | ||
301 | movl $0x0000fffc, %esp |
301 | movl $0x0000fffc, %esp |
302 | movl $0x0000fffc, %ebp |
302 | movl $0x0000fffc, %ebp |
303 | 303 | ||
304 | #define VESA_INFO_SIZE 1024 |
304 | #define VESA_INFO_SIZE 1024 |
305 | 305 | ||
306 | #define VESA_MODE_LIST_PTR_OFFSET 14 |
306 | #define VESA_MODE_LIST_PTR_OFFSET 14 |
307 | #define VESA_MODE_WIDTH_OFFSET 18 |
307 | #define VESA_MODE_WIDTH_OFFSET 18 |
308 | #define VESA_MODE_HEIGHT_OFFSET 20 |
308 | #define VESA_MODE_HEIGHT_OFFSET 20 |
309 | #define VESA_MODE_BPP_OFFSET 25 |
309 | #define VESA_MODE_BPP_OFFSET 25 |
310 | #define VESA_MODE_SCANLINE_OFFSET 16 |
310 | #define VESA_MODE_SCANLINE_OFFSET 16 |
311 | #define VESA_MODE_PHADDR_OFFSET 40 |
311 | #define VESA_MODE_PHADDR_OFFSET 40 |
312 | 312 | ||
313 | #define VESA_END_OF_MODES 0xffff |
313 | #define VESA_END_OF_MODES 0xffff |
314 | 314 | ||
315 | #define VESA_OK 0x4f |
315 | #define VESA_OK 0x4f |
316 | 316 | ||
317 | #define VESA_GET_INFO 0x4f00 |
317 | #define VESA_GET_INFO 0x4f00 |
318 | #define VESA_GET_MODE_INFO 0x4f01 |
318 | #define VESA_GET_MODE_INFO 0x4f01 |
319 | #define VESA_SET_MODE 0x4f02 |
319 | #define VESA_SET_MODE 0x4f02 |
320 | 320 | ||
321 | #define CONFIG_VESA_BPP_a 255 |
321 | #define CONFIG_VESA_BPP_a 255 |
322 | 322 | ||
323 | #if CONFIG_VESA_BPP == 24 |
323 | #if CONFIG_VESA_BPP == 24 |
324 | #undef CONFIG_VESA_BPP_a |
324 | #undef CONFIG_VESA_BPP_a |
325 | #define CONFIG_VESA_BPP_a 32 |
325 | #define CONFIG_VESA_BPP_a 32 |
326 | #endif |
326 | #endif |
327 | 327 | ||
328 | mov $VESA_GET_INFO, %ax |
328 | mov $VESA_GET_INFO, %ax |
329 | mov $e_vesa_init - vesa_init, %di |
329 | mov $e_vesa_init - vesa_init, %di |
330 | push %di |
330 | push %di |
331 | int $0x10 |
331 | int $0x10 |
332 | 332 | ||
333 | pop %di |
333 | pop %di |
334 | cmp $VESA_OK, %al |
334 | cmp $VESA_OK, %al |
335 | jnz 0f |
335 | jnz 0f |
336 | 336 | ||
337 | mov 2 + VESA_MODE_LIST_PTR_OFFSET(%di), %si |
337 | mov 2 + VESA_MODE_LIST_PTR_OFFSET(%di), %si |
338 | mov %si, %gs |
338 | mov %si, %gs |
339 | mov VESA_MODE_LIST_PTR_OFFSET(%di), %si |
339 | mov VESA_MODE_LIST_PTR_OFFSET(%di), %si |
340 | 340 | ||
341 | add $VESA_INFO_SIZE, %di |
341 | add $VESA_INFO_SIZE, %di |
342 | 342 | ||
343 | 1:# Try next mode |
343 | 1:# Try next mode |
344 | mov %gs:(%si), %cx |
344 | mov %gs:(%si), %cx |
345 | cmp $VESA_END_OF_MODES, %cx |
345 | cmp $VESA_END_OF_MODES, %cx |
346 | jz 0f |
346 | jz 0f |
347 | 347 | ||
348 | inc %si |
348 | inc %si |
349 | inc %si |
349 | inc %si |
350 | push %cx |
350 | push %cx |
351 | push %di |
351 | push %di |
352 | push %si |
352 | push %si |
353 | mov $VESA_GET_MODE_INFO, %ax |
353 | mov $VESA_GET_MODE_INFO, %ax |
354 | int $0x10 |
354 | int $0x10 |
355 | 355 | ||
356 | pop %si |
356 | pop %si |
357 | pop %di |
357 | pop %di |
358 | pop %cx |
358 | pop %cx |
359 | cmp $VESA_OK, %al |
359 | cmp $VESA_OK, %al |
360 | jnz 0f |
360 | jnz 0f |
361 | 361 | ||
362 | mov $CONFIG_VESA_WIDTH, %ax |
362 | mov $CONFIG_VESA_WIDTH, %ax |
363 | cmp VESA_MODE_WIDTH_OFFSET(%di), %ax |
363 | cmp VESA_MODE_WIDTH_OFFSET(%di), %ax |
364 | jnz 1b |
364 | jnz 1b |
365 | 365 | ||
366 | mov $CONFIG_VESA_HEIGHT, %ax |
366 | mov $CONFIG_VESA_HEIGHT, %ax |
367 | cmp VESA_MODE_HEIGHT_OFFSET(%di), %ax |
367 | cmp VESA_MODE_HEIGHT_OFFSET(%di), %ax |
368 | jnz 1b |
368 | jnz 1b |
369 | 369 | ||
370 | mov $CONFIG_VESA_BPP, %al |
370 | mov $CONFIG_VESA_BPP, %al |
371 | cmp VESA_MODE_BPP_OFFSET(%di), %al |
371 | cmp VESA_MODE_BPP_OFFSET(%di), %al |
372 | jz 2f |
372 | jz 2f |
373 | 373 | ||
374 | mov $CONFIG_VESA_BPP_a, %al |
374 | mov $CONFIG_VESA_BPP_a, %al |
375 | cmp VESA_MODE_BPP_OFFSET(%di), %al |
375 | cmp VESA_MODE_BPP_OFFSET(%di), %al |
376 | jnz 1b |
376 | jnz 1b |
377 | 377 | ||
378 | 2: |
378 | 2: |
379 | 379 | ||
380 | mov %cx, %bx |
380 | mov %cx, %bx |
381 | or $0xc000, %bx |
381 | or $0xc000, %bx |
382 | push %di |
382 | push %di |
383 | mov $VESA_SET_MODE, %ax |
383 | mov $VESA_SET_MODE, %ax |
384 | int $0x10 |
384 | int $0x10 |
385 | 385 | ||
386 | pop %di |
386 | pop %di |
387 | cmp $VESA_OK, %al |
387 | cmp $VESA_OK, %al |
388 | jnz 0f |
388 | jnz 0f |
389 | 389 | ||
390 | mov VESA_MODE_PHADDR_OFFSET(%di), %esi |
390 | mov VESA_MODE_PHADDR_OFFSET(%di), %esi |
391 | mov VESA_MODE_WIDTH_OFFSET(%di), %ax |
391 | mov VESA_MODE_WIDTH_OFFSET(%di), %ax |
392 | shl $16, %eax |
392 | shl $16, %eax |
393 | mov VESA_MODE_HEIGHT_OFFSET(%di), %ax |
393 | mov VESA_MODE_HEIGHT_OFFSET(%di), %ax |
394 | mov VESA_MODE_BPP_OFFSET(%di), %bl |
394 | mov VESA_MODE_BPP_OFFSET(%di), %bl |
395 | xor %bh, %bh |
395 | xor %bh, %bh |
396 | shl $16, %ebx |
396 | shl $16, %ebx |
397 | mov VESA_MODE_SCANLINE_OFFSET(%di), %bx |
397 | mov VESA_MODE_SCANLINE_OFFSET(%di), %bx |
398 | mov %eax, %edi |
398 | mov %eax, %edi |
399 | 399 | ||
400 | 8: |
400 | 8: |
401 | 401 | ||
402 | mov %cr0, %eax |
402 | mov %cr0, %eax |
403 | or $1, %eax |
403 | or $1, %eax |
404 | mov %eax, %cr0 |
404 | mov %eax, %cr0 |
405 | 405 | ||
406 | jmp 9f |
406 | jmp 9f |
407 | 9: |
407 | 9: |
408 | 408 | ||
409 | ljmpl $gdtselector(KTEXT32_DES), $(vesa_init_protect - vesa_init + VESA_INIT_SEGMENT << 4) |
409 | ljmpl $gdtselector(KTEXT32_DES), $(vesa_init_protect - vesa_init + VESA_INIT_SEGMENT << 4) |
410 | 410 | ||
411 | 0:# No prefered mode found |
411 | 0:# No prefered mode found |
412 | mov $0x111, %cx |
412 | mov $0x111, %cx |
413 | push %di |
413 | push %di |
414 | push %cx |
414 | push %cx |
415 | mov $VESA_GET_MODE_INFO, %ax |
415 | mov $VESA_GET_MODE_INFO, %ax |
416 | int $0x10 |
416 | int $0x10 |
417 | 417 | ||
418 | pop %cx |
418 | pop %cx |
419 | pop %di |
419 | pop %di |
420 | cmp $VESA_OK, %al |
420 | cmp $VESA_OK, %al |
421 | jnz 1f |
421 | jnz 1f |
422 | jz 2b # Force relative jump |
422 | jz 2b # Force relative jump |
423 | 423 | ||
424 | 1: |
424 | 1: |
425 | mov $0x0003, %ax |
425 | mov $0x0003, %ax |
426 | int $0x10 |
426 | int $0x10 |
427 | mov $0xffffffff, %edi # EGA text mode used, because of problems with VESA |
427 | mov $0xffffffff, %edi # EGA text mode used, because of problems with VESA |
428 | xor %ax, %ax |
428 | xor %ax, %ax |
429 | jz 8b # Force relative jump |
429 | jz 8b # Force relative jump |
430 | 430 | ||
431 | 431 | ||
432 | .code32 |
432 | .code32 |
433 | vesa_init_protect: |
433 | vesa_init_protect: |
434 | movw $gdtselector(KDATA_DES), %cx |
434 | movw $gdtselector(KDATA_DES), %cx |
435 | movw %cx, %es |
435 | movw %cx, %es |
436 | movw %cx, %ds # kernel data + stack |
436 | movw %cx, %ds # kernel data + stack |
437 | movw %cx, %ss |
437 | movw %cx, %ss |
438 | # Simics seems to remove hidden part of GS on entering user mode |
438 | # Simics seems to remove hidden part of GS on entering user mode |
439 | # when _visible_ part of GS does not point to user-mode segment |
439 | # when _visible_ part of GS does not point to user-mode segment |
440 | movw $gdtselector(UDATA_DES), %cx |
440 | movw $gdtselector(UDATA_DES), %cx |
441 | movw %cx, %fs |
441 | movw %cx, %fs |
442 | movw %cx, %gs |
442 | movw %cx, %gs |
443 | 443 | ||
444 | jmpl $gdtselector(KTEXT32_DES), $vesa_meeting_point |
444 | jmpl $gdtselector(KTEXT32_DES), $vesa_meeting_point |
445 | 445 | ||
446 | .align 4 |
446 | .align 4 |
447 | e_vesa_init: |
447 | e_vesa_init: |
448 | #endif |
448 | #endif |
449 | 449 | ||
450 | .section K_DATA_START, "aw", @progbits |
450 | .section K_DATA_START, "aw", @progbits |
451 | .align 4096 |
451 | .align 4096 |
452 | 452 | ||
453 | # Identical mapping of first 64MB and the same of -2GB -> 0 |
453 | # Identical mapping of first 64MB and the same of -2GB -> 0 |
454 | .global ptl_2 |
454 | .global ptl_2 |
455 | ptl_2: |
455 | ptl_2: |
456 | .quad 0x0 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
456 | .quad 0x0 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
457 | .quad 0x200000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
457 | .quad 0x200000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
458 | .quad 0x400000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
458 | .quad 0x400000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
459 | .quad 0x600000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
459 | .quad 0x600000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
460 | .quad 0x800000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
460 | .quad 0x800000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
461 | .quad 0xa00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
461 | .quad 0xa00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
462 | .quad 0xc00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
462 | .quad 0xc00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
463 | .quad 0xe00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
463 | .quad 0xe00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
464 | .quad 0x1000000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
464 | .quad 0x1000000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
465 | .quad 0x1200000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
465 | .quad 0x1200000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
466 | .quad 0x1400000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
466 | .quad 0x1400000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
467 | .quad 0x1600000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
467 | .quad 0x1600000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
468 | .quad 0x1800000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
468 | .quad 0x1800000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
469 | .quad 0x1a00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
469 | .quad 0x1a00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
470 | .quad 0x1c00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
470 | .quad 0x1c00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
471 | .quad 0x1e00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
471 | .quad 0x1e00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
472 | .quad 0x2000000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
472 | .quad 0x2000000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
473 | .quad 0x2200000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
473 | .quad 0x2200000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
474 | .quad 0x2400000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
474 | .quad 0x2400000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
475 | .quad 0x2600000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
475 | .quad 0x2600000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
476 | .quad 0x2800000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
476 | .quad 0x2800000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
477 | .quad 0x2a00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
477 | .quad 0x2a00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
478 | .quad 0x2c00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
478 | .quad 0x2c00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
479 | .quad 0x2e00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
479 | .quad 0x2e00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
480 | .quad 0x3000000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
480 | .quad 0x3000000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
481 | .quad 0x3200000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
481 | .quad 0x3200000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
482 | .quad 0x3400000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
482 | .quad 0x3400000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
483 | .quad 0x3600000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
483 | .quad 0x3600000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
484 | .quad 0x3800000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
484 | .quad 0x3800000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
485 | .quad 0x3a00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
485 | .quad 0x3a00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
486 | .quad 0x3c00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
486 | .quad 0x3c00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
487 | .quad 0x3e00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
487 | .quad 0x3e00000 | (PTL_WRITABLE | PTL_PRESENT | PTL_2MB_PAGE) |
488 | 488 | ||
489 | .align 4096 |
489 | .align 4096 |
490 | .global ptl_1 |
490 | .global ptl_1 |
491 | ptl_1: |
491 | ptl_1: |
492 | .quad ptl_2 + (PTL_WRITABLE | PTL_PRESENT) |
492 | .quad ptl_2 + (PTL_WRITABLE | PTL_PRESENT) |
493 | .fill 509,8,0 |
493 | .fill 509,8,0 |
494 | .quad ptl_2 + (PTL_WRITABLE | PTL_PRESENT) |
494 | .quad ptl_2 + (PTL_WRITABLE | PTL_PRESENT) |
495 | .fill 1,8,0 |
495 | .fill 1,8,0 |
496 | 496 | ||
497 | .align 4096 |
497 | .align 4096 |
498 | .global ptl_0 |
498 | .global ptl_0 |
499 | ptl_0: |
499 | ptl_0: |
500 | .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT) |
500 | .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT) |
501 | .fill 255,8,0 |
501 | .fill 255,8,0 |
502 | .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT) |
502 | .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT) |
503 | .fill 254,8,0 |
503 | .fill 254,8,0 |
504 | .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT) |
504 | .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT) |
505 | 505 | ||
506 | .global bootstrap_gdtr |
506 | .global bootstrap_gdtr |
507 | bootstrap_gdtr: |
507 | bootstrap_gdtr: |
508 | .word gdtselector(GDT_ITEMS) |
508 | .word gdtselector(GDT_ITEMS) |
509 | .long KA2PA(gdt) |
509 | .long KA2PA(gdt) |
510 | 510 | ||
511 | grub_eax: |
511 | grub_eax: |
512 | .long 0 |
512 | .long 0 |
513 | 513 | ||
514 | grub_ebx: |
514 | grub_ebx: |
515 | .long 0 |
515 | .long 0 |
516 | 516 |