Rev 859 | Go to most recent revision | Details | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
854 | serge | 1 | |
2 | |||
3 | |||
4 | |||
5 | |||
6 | |||
7 | |||
8 | |||
9 | |||
10 | |||
11 | |||
12 | extrn __os_stack |
||
13 | extrn _boot_mbi |
||
14 | extrn _sys_pdbr |
||
15 | |||
16 | |||
17 | extrn __edata |
||
18 | |||
19 | |||
20 | |||
21 | |||
22 | |||
23 | |||
24 | |||
25 | |||
26 | dd 0x1BADB002 |
||
27 | dd 0x00010003 |
||
28 | dd -(0x1BADB002 + 0x00010003) |
||
29 | dd mboot |
||
30 | dd 0x100000 |
||
31 | dd __edata; - OS_BASE |
||
32 | dd LAST_PAGE |
||
33 | dd __start |
||
34 | |||
35 | |||
36 | __start: |
||
37 | cld |
||
38 | |||
39 | |||
40 | push 0 |
||
41 | popf |
||
42 | |||
43 | |||
44 | mov ecx, sz_invboot |
||
45 | jne .fault |
||
46 | |||
47 | |||
48 | mov ecx, sz_nomods |
||
49 | jnc .fault |
||
50 | |||
51 | |||
52 | mov ecx, sz_nommap |
||
53 | jnc .fault |
||
54 | |||
55 | |||
56 | |||
57 | |||
58 | cpuid |
||
59 | cmp eax, 0 |
||
60 | mov ecx, sz_nopse |
||
61 | jbe .fault |
||
62 | |||
63 | |||
64 | cpuid |
||
65 | bt edx, 3 |
||
66 | mov ecx, sz_nopse |
||
67 | jnc .fault |
||
68 | |||
69 | |||
70 | |||
71 | |||
72 | mov edi, _sys_pdbr+(OS_BASE shr 20)+(0x100000000-OS_BASE) |
||
73 | mov eax, PG_LARGE+PG_SW |
||
74 | @@: |
||
75 | stosd |
||
76 | add eax, 4*1024*1024 |
||
77 | loop @B |
||
78 | |||
79 | |||
80 | mov dword [_sys_pdbr+(0x100000000-OS_BASE)+4], PG_LARGE+PG_SW+4*1024*1024 |
||
81 | mov dword [_sys_pdbr+(0x100000000-OS_BASE)+(page_tabs shr 20)], _sys_pdbr+PG_SW+(0x100000000-OS_BASE) |
||
82 | |||
83 | |||
84 | or ebx, CR4_PSE |
||
85 | and ebx, not CR4_PAE |
||
86 | mov cr4, ebx |
||
87 | |||
88 | |||
89 | mov ebx, cr0 |
||
90 | or ebx,CR0_PG+CR0_WP |
||
91 | |||
92 | |||
93 | mov cr0, ebx |
||
94 | |||
95 | |||
96 | |||
97 | |||
98 | mov esi, [ebx+24] |
||
99 | mov ecx, LAST_PAGE |
||
100 | test edx, edx |
||
101 | jz .no_mods |
||
102 | .scan_mod: |
||
103 | mov ecx, [esi+4] |
||
104 | add esi, 16 |
||
105 | dec edx |
||
106 | jnz .scan_mod |
||
107 | |||
108 | |||
109 | add ecx, 4095 |
||
110 | and ecx, not 4095 |
||
111 | |||
112 | |||
113 | jmp pword 0x08:_high_code |
||
114 | |||
115 | |||
116 | |||
117 | ; push ecx |
||
118 | ; call _lcls |
||
119 | ; call __bprintf |
||
120 | _hlt: |
||
121 | hlt |
||
122 | jmp _hlt |
||
123 | |||
124 | |||
125 | db 'Halted',0 |
||
126 | |||
127 | |||
128 | db 'Halted',0 |
||
129 | |||
130 | |||
131 | db 'Halted',0 |
||
132 | |||
133 | |||
134 | db 'Halted',0 |
||
135 |