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1 | # |
1 | # |
2 | # Copyright (c) 2001-2004 Jakub Jermar |
2 | # Copyright (c) 2001-2004 Jakub Jermar |
3 | # Copyright (c) 2005-2006 Martin Decky |
3 | # Copyright (c) 2005-2006 Martin Decky |
4 | # All rights reserved. |
4 | # All rights reserved. |
5 | # |
5 | # |
6 | # Redistribution and use in source and binary forms, with or without |
6 | # Redistribution and use in source and binary forms, with or without |
7 | # modification, are permitted provided that the following conditions |
7 | # modification, are permitted provided that the following conditions |
8 | # are met: |
8 | # are met: |
9 | # |
9 | # |
10 | # - Redistributions of source code must retain the above copyright |
10 | # - Redistributions of source code must retain the above copyright |
11 | # notice, this list of conditions and the following disclaimer. |
11 | # notice, this list of conditions and the following disclaimer. |
12 | # - Redistributions in binary form must reproduce the above copyright |
12 | # - Redistributions in binary form must reproduce the above copyright |
13 | # notice, this list of conditions and the following disclaimer in the |
13 | # notice, this list of conditions and the following disclaimer in the |
14 | # documentation and/or other materials provided with the distribution. |
14 | # documentation and/or other materials provided with the distribution. |
15 | # - The name of the author may not be used to endorse or promote products |
15 | # - The name of the author may not be used to endorse or promote products |
16 | # derived from this software without specific prior written permission. |
16 | # derived from this software without specific prior written permission. |
17 | # |
17 | # |
18 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
19 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
20 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
21 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
22 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
23 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
24 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
25 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
26 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
27 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
28 | # |
28 | # |
29 | 29 | ||
30 | #include <arch/boot/boot.h> |
30 | #include <arch/boot/boot.h> |
31 | #include <arch/boot/memmap.h> |
31 | #include <arch/boot/memmap.h> |
32 | #include <arch/mm/page.h> |
32 | #include <arch/mm/page.h> |
33 | #include <arch/pm.h> |
33 | #include <arch/pm.h> |
- | 34 | #include <arch/cpuid.h> |
|
34 | 35 | ||
35 | #define START_STACK (BOOT_OFFSET - BOOT_STACK_SIZE) |
36 | #define START_STACK (BOOT_OFFSET - BOOT_STACK_SIZE) |
36 | 37 | ||
37 | .section K_TEXT_START, "ax" |
38 | .section K_TEXT_START, "ax" |
38 | 39 | ||
39 | .code32 |
40 | .code32 |
40 | .align 4 |
41 | .align 4 |
41 | .global multiboot_image_start |
42 | .global multiboot_image_start |
42 | multiboot_header: |
43 | multiboot_header: |
43 | .long MULTIBOOT_HEADER_MAGIC |
44 | .long MULTIBOOT_HEADER_MAGIC |
44 | .long MULTIBOOT_HEADER_FLAGS |
45 | .long MULTIBOOT_HEADER_FLAGS |
45 | .long -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS) # checksum |
46 | .long -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS) # checksum |
46 | .long multiboot_header |
47 | .long multiboot_header |
47 | .long unmapped_ktext_start |
48 | .long unmapped_ktext_start |
48 | .long 0 |
49 | .long 0 |
49 | .long 0 |
50 | .long 0 |
50 | .long multiboot_image_start |
51 | .long multiboot_image_start |
51 | 52 | ||
52 | multiboot_image_start: |
53 | multiboot_image_start: |
53 | cld |
54 | cld |
54 | movl $START_STACK, %esp # initialize stack pointer |
55 | movl $START_STACK, %esp # initialize stack pointer |
55 | lgdt KA2PA(bootstrap_gdtr) # initialize Global Descriptor Table register |
56 | lgdt KA2PA(bootstrap_gdtr) # initialize Global Descriptor Table register |
56 | 57 | ||
57 | movw $gdtselector(KDATA_DES), %cx |
58 | movw $gdtselector(KDATA_DES), %cx |
58 | movw %cx, %es |
59 | movw %cx, %es |
59 | movw %cx, %fs |
60 | movw %cx, %fs |
60 | movw %cx, %gs |
61 | movw %cx, %gs |
61 | movw %cx, %ds # kernel data + stack |
62 | movw %cx, %ds # kernel data + stack |
62 | movw %cx, %ss |
63 | movw %cx, %ss |
63 | 64 | ||
64 | jmpl $gdtselector(KTEXT_DES), $multiboot_meeting_point |
65 | jmpl $gdtselector(KTEXT_DES), $multiboot_meeting_point |
65 | multiboot_meeting_point: |
66 | multiboot_meeting_point: |
66 | 67 | ||
67 | movl %eax, grub_eax # save parameters from GRUB |
68 | movl %eax, grub_eax # save parameters from GRUB |
68 | movl %ebx, grub_ebx |
69 | movl %ebx, grub_ebx |
69 | 70 | ||
70 | xorl %eax, %eax |
71 | movl $(INTEL_CPUID_LEVEL), %eax |
71 | cpuid |
72 | cpuid |
72 | cmp $0x0, %eax # any function > 0? |
73 | cmp $0x0, %eax # any function > 0? |
73 | jbe pse_unsupported |
74 | jbe pse_unsupported |
- | 75 | ||
74 | movl $0x1, %eax # basic function code 1 |
76 | movl $(INTEL_CPUID_STANDARD), %eax |
75 | cpuid |
77 | cpuid |
76 | bt $3, %edx # test if PSE is supported |
78 | bt $(INTEL_PSE), %edx |
77 | jc pse_supported |
79 | jc pse_supported |
78 | 80 | ||
79 | pse_unsupported: |
81 | pse_unsupported: |
80 | movl $pse_msg, %esi |
82 | movl $pse_msg, %esi |
81 | jmp error_halt |
83 | jmp error_halt |
82 | 84 | ||
83 | pse_supported: |
85 | pse_supported: |
- | 86 | ||
- | 87 | bt $(INTEL_SEP), %edx |
|
- | 88 | jc sep_supported |
|
- | 89 | ||
- | 90 | movl $sep_msg, %esi |
|
- | 91 | jmp error_halt |
|
- | 92 | ||
- | 93 | sep_supported: |
|
84 | 94 | ||
85 | #include "vesa_prot.inc" |
95 | #include "vesa_prot.inc" |
86 | 96 | ||
87 | # map kernel and turn paging on |
97 | # map kernel and turn paging on |
88 | call map_kernel |
98 | call map_kernel |
89 | 99 | ||
90 | # call arch_pre_main(grub_eax, grub_ebx) |
100 | # call arch_pre_main(grub_eax, grub_ebx) |
91 | pushl grub_ebx |
101 | pushl grub_ebx |
92 | pushl grub_eax |
102 | pushl grub_eax |
93 | call arch_pre_main |
103 | call arch_pre_main |
94 | 104 | ||
95 | call main_bsp |
105 | call main_bsp |
96 | 106 | ||
97 | # not reached |
107 | # not reached |
98 | cli |
108 | cli |
99 | hlt0: |
109 | hlt0: |
100 | hlt |
110 | hlt |
101 | jmp hlt0 |
111 | jmp hlt0 |
102 | 112 | ||
103 | .global map_kernel |
113 | .global map_kernel |
104 | map_kernel: |
114 | map_kernel: |
105 | # |
115 | # |
106 | # Here we setup mapping for both the unmapped and mapped sections of the kernel. |
116 | # Here we setup mapping for both the unmapped and mapped sections of the kernel. |
107 | # For simplicity, we map the entire 4G space. |
117 | # For simplicity, we map the entire 4G space. |
108 | # |
118 | # |
109 | movl %cr4, %ecx |
119 | movl %cr4, %ecx |
110 | orl $(1 << 4), %ecx # turn PSE on |
120 | orl $(1 << 4), %ecx # turn PSE on |
111 | andl $(~(1 << 5)), %ecx # turn PAE off |
121 | andl $(~(1 << 5)), %ecx # turn PAE off |
112 | movl %ecx, %cr4 |
122 | movl %ecx, %cr4 |
113 | 123 | ||
114 | movl $(page_directory + 0), %esi |
124 | movl $(page_directory + 0), %esi |
115 | movl $(page_directory + 2048), %edi |
125 | movl $(page_directory + 2048), %edi |
116 | xorl %ecx, %ecx |
126 | xorl %ecx, %ecx |
117 | xorl %ebx, %ebx |
127 | xorl %ebx, %ebx |
118 | 128 | ||
119 | floop: |
129 | floop: |
120 | movl $((1 << 7) | (1 << 1) | (1 << 0)), %eax |
130 | movl $((1 << 7) | (1 << 1) | (1 << 0)), %eax |
121 | orl %ebx, %eax |
131 | orl %ebx, %eax |
122 | movl %eax, (%esi, %ecx, 4) # mapping 0x00000000 + %ecx * 4M => 0x00000000 + %ecx * 4M |
132 | movl %eax, (%esi, %ecx, 4) # mapping 0x00000000 + %ecx * 4M => 0x00000000 + %ecx * 4M |
123 | movl %eax, (%edi, %ecx, 4) # mapping 0x80000000 + %ecx * 4M => 0x00000000 + %ecx * 4M |
133 | movl %eax, (%edi, %ecx, 4) # mapping 0x80000000 + %ecx * 4M => 0x00000000 + %ecx * 4M |
124 | addl $(4 * 1024 * 1024), %ebx |
134 | addl $(4 * 1024 * 1024), %ebx |
125 | 135 | ||
126 | incl %ecx |
136 | incl %ecx |
127 | cmpl $512, %ecx |
137 | cmpl $512, %ecx |
128 | jl floop |
138 | jl floop |
129 | 139 | ||
130 | movl %esi, %cr3 |
140 | movl %esi, %cr3 |
131 | 141 | ||
132 | movl %cr0, %ebx |
142 | movl %cr0, %ebx |
133 | orl $(1 << 31), %ebx # turn paging on |
143 | orl $(1 << 31), %ebx # turn paging on |
134 | movl %ebx, %cr0 |
144 | movl %ebx, %cr0 |
135 | ret |
145 | ret |
136 | 146 | ||
137 | # Print string from %esi to EGA display (in red) and halt |
147 | # Print string from %esi to EGA display (in red) and halt |
138 | error_halt: |
148 | error_halt: |
139 | movl $0xb8000, %edi # base of EGA text mode memory |
149 | movl $0xb8000, %edi # base of EGA text mode memory |
140 | xorl %eax, %eax |
150 | xorl %eax, %eax |
141 | 151 | ||
142 | movw $0x3d4, %dx # read bits 8 - 15 of the cursor address |
152 | movw $0x3d4, %dx # read bits 8 - 15 of the cursor address |
143 | movb $0xe, %al |
153 | movb $0xe, %al |
144 | outb %al, %dx |
154 | outb %al, %dx |
145 | 155 | ||
146 | movw $0x3d5, %dx |
156 | movw $0x3d5, %dx |
147 | inb %dx, %al |
157 | inb %dx, %al |
148 | shl $8, %ax |
158 | shl $8, %ax |
149 | 159 | ||
150 | movw $0x3d4, %dx # read bits 0 - 7 of the cursor address |
160 | movw $0x3d4, %dx # read bits 0 - 7 of the cursor address |
151 | movb $0xf, %al |
161 | movb $0xf, %al |
152 | outb %al, %dx |
162 | outb %al, %dx |
153 | 163 | ||
154 | movw $0x3d5, %dx |
164 | movw $0x3d5, %dx |
155 | inb %dx, %al |
165 | inb %dx, %al |
156 | 166 | ||
157 | cmp $1920, %ax |
167 | cmp $1920, %ax |
158 | jbe cursor_ok |
168 | jbe cursor_ok |
159 | 169 | ||
160 | movw $1920, %ax # sanity check for the cursor on the last line |
170 | movw $1920, %ax # sanity check for the cursor on the last line |
161 | 171 | ||
162 | cursor_ok: |
172 | cursor_ok: |
163 | 173 | ||
164 | movw %ax, %bx |
174 | movw %ax, %bx |
165 | shl $1, %eax |
175 | shl $1, %eax |
166 | addl %eax, %edi |
176 | addl %eax, %edi |
167 | 177 | ||
168 | movw $0x0c00, %ax # black background, light red foreground |
178 | movw $0x0c00, %ax # black background, light red foreground |
169 | 179 | ||
170 | ploop: |
180 | ploop: |
171 | lodsb |
181 | lodsb |
172 | cmp $0, %al |
182 | cmp $0, %al |
173 | je ploop_end |
183 | je ploop_end |
174 | stosw |
184 | stosw |
175 | inc %bx |
185 | inc %bx |
176 | jmp ploop |
186 | jmp ploop |
177 | ploop_end: |
187 | ploop_end: |
178 | 188 | ||
179 | movw $0x3d4, %dx # write bits 8 - 15 of the cursor address |
189 | movw $0x3d4, %dx # write bits 8 - 15 of the cursor address |
180 | movb $0xe, %al |
190 | movb $0xe, %al |
181 | outb %al, %dx |
191 | outb %al, %dx |
182 | 192 | ||
183 | movw $0x3d5, %dx |
193 | movw $0x3d5, %dx |
184 | movb %bh, %al |
194 | movb %bh, %al |
185 | outb %al, %dx |
195 | outb %al, %dx |
186 | 196 | ||
187 | movw $0x3d4, %dx # write bits 0 - 7 of the cursor address |
197 | movw $0x3d4, %dx # write bits 0 - 7 of the cursor address |
188 | movb $0xf, %al |
198 | movb $0xf, %al |
189 | outb %al, %dx |
199 | outb %al, %dx |
190 | 200 | ||
191 | movw $0x3d5, %dx |
201 | movw $0x3d5, %dx |
192 | movb %bl, %al |
202 | movb %bl, %al |
193 | outb %al, %dx |
203 | outb %al, %dx |
194 | 204 | ||
195 | cli |
205 | cli |
196 | hlt1: |
206 | hlt1: |
197 | hlt |
207 | hlt |
198 | jmp hlt1 |
208 | jmp hlt1 |
199 | 209 | ||
200 | #include "vesa_real.inc" |
210 | #include "vesa_real.inc" |
201 | 211 | ||
202 | .section K_DATA_START, "aw", @progbits |
212 | .section K_DATA_START, "aw", @progbits |
203 | 213 | ||
204 | .align 4096 |
214 | .align 4096 |
205 | page_directory: |
215 | page_directory: |
206 | .space 4096, 0 |
216 | .space 4096, 0 |
207 | 217 | ||
208 | grub_eax: |
218 | grub_eax: |
209 | .long 0 |
219 | .long 0 |
210 | 220 | ||
211 | grub_ebx: |
221 | grub_ebx: |
212 | .long 0 |
222 | .long 0 |
213 | 223 | ||
214 | pse_msg: |
224 | pse_msg: |
215 | .asciz "Page Size Extension not supported. System halted." |
225 | .asciz "Page Size Extension not supported. System halted." |
- | 226 | ||
- | 227 | sep_msg: |
|
- | 228 | .asciz "SYSENTER/SYSEXIT not supported. System halted." |
|
216 | 229 |