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Rev 1507 Rev 1683
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;; Copyright (C) KolibriOS team 2004-2008. All rights reserved. ;;
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;; Copyright (C) KolibriOS team 2004-2008. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License    ;;
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;; Distributed under terms of the GNU General Public License    ;;
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;;                                                              ;;
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;;                                                              ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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$Revision: 1507 $
 8 
$Revision: 1683 $
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 9 
 
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 10 
 
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- 
 
 11 
MEM_WB	   equ 6	       ;write-back memory
- 
 
 12 
MEM_WC	   equ 1	       ;write combined memory
- 
 
 13 
MEM_UC	   equ 0	       ;uncached memory
- 
 
 14 
 
- 
 
 15 
; ======================================================================
- 
 
 16 
align 4
- 
 
 17 
preinit_mem:
- 
 
 18 
 
- 
 
 19 
; clear [0x280000..HEAP_BASE]
- 
 
 20 
	   xor	 eax,eax
- 
 
 21 
	   mov	 edi,0x280000			; 0x280000 = ramdisk FAT ?
- 
 
 22 
	   mov	 ecx,(HEAP_BASE-OS_BASE-0x280000) / 4
- 
 
 23 
	   cld
- 
 
 24 
	   rep	 stosd
- 
 
 25 
 
- 
 
 26 
; clear [0x40000..0x90000]
- 
 
 27 
	   mov	 edi,0x50000			; 0x50000 is somewhere inside kernel code?
- 
 
 28 
	   mov	 ecx,(0x90000-0x50000)/4
- 
 
 29 
	   rep	 stosd
- 
 
 30 
 
- 
 
 31 
; clear undefined kernel globals
- 
 
 32 
	   mov	 edi, endofcode-OS_BASE
- 
 
 33 
	   mov	 ecx, (uglobals_size/4)+4
- 
 
 34 
	   rep	 stosd
- 
 
 35 
 
- 
 
 36 
; save [0..0xffff]
- 
 
 37 
	   xor	 esi, esi
- 
 
 38 
	   mov	 edi,0x2F0000			; low mem storage area
- 
 
 39 
	   mov	 ecx, 0x10000 / 4
- 
 
 40 
	   rep	 movsd
- 
 
 41 
; clear [0x1000..0x0ffff]
- 
 
 42 
	   mov	 edi,0x1000
- 
 
 43 
	   mov	 ecx,0xf000 / 4
- 
 
 44 
	   rep	 stosd
- 
 
 45 
 
- 
 
 46 
; clear  table
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- 
 
 47 
	   mov edi, sys_pgdir-OS_BASE
11 
MEM_WB     equ 6               ;write-back memory
 48 
	   mov ecx, 4096/4
12 
MEM_WC     equ 1               ;write combined memory
 49 
	   rep stosd
13 
MEM_UC     equ 0               ;uncached memory
 - 
 
14 
 
 - 
 
15 
 
 - 
 
- 
 
 50 
	ret
16 
align 4
 51 
 
17 
proc init_mem
 52 
; ======================================================================
18 
; calculate maximum allocatable address and number of allocatable pages
 - 
 
19 
           mov edi, BOOT_VAR-OS_BASE + 0x9104
 - 
 
20 
           mov ecx, [edi-4]
 - 
 
21 
           xor esi, esi ; esi will hold total amount of memory
 - 
 
22 
           xor edx, edx ; edx will hold maximum allocatable address
 - 
 
23 
.calcmax:
 - 
 
24 
; round all to pages
 - 
 
25 
           mov eax, [edi]
 - 
 
26 
           test eax, 0xFFF
 - 
 
27 
           jz @f
 - 
 
28 
           neg eax
 - 
 
29 
           and eax, 0xFFF
 - 
 
30 
           add [edi], eax
 - 
 
31 
           adc dword [edi+4], 0
 - 
 
32 
           sub [edi+8], eax
 - 
 
33 
           sbb dword [edi+12], 0
 - 
 
34 
           jc .unusable
 - 
 
35 
@@:
 - 
 
36 
           and dword [edi+8], not 0xFFF
 - 
 
37 
           jz .unusable
 - 
 
38 
; ignore memory after 4 Gb
 - 
 
39 
           cmp dword [edi+4], 0
 - 
 
40 
           jnz .unusable
 - 
 
41 
           mov eax, [edi]
 - 
 
42 
           cmp dword [edi+12], 0
 - 
 
43 
           jnz .overflow
 - 
 
44 
           add eax, [edi+8]
 - 
 
45 
           jnc @f
 - 
 
46 
.overflow:
 - 
 
47 
           mov eax, 0xFFFFF000
 53 
align 4
48 
@@:
 - 
 
49 
           cmp edx, eax
 - 
 
50 
           jae @f
 - 
 
51 
           mov edx, eax
 - 
 
52 
@@:
 - 
 
53 
           sub eax, [edi]
 - 
 
54 
           mov [edi+8], eax
 - 
 
55 
           add esi, eax
 - 
 
56 
           jmp .usable
 - 
 
57 
.unusable:
 - 
 
58 
           and dword [edi+8], 0
 54 
proc init_mem
59 
.usable:
 55 
 
60 
           add edi, 20
 56 
	   mov esi, (PCIe_CONFIG_SPACE-OS_BASE) 	; esi will hold total amount of memory
61 
           loop .calcmax
 57 
	   mov edx, esi 				; edx will hold maximum allocatable address
Line 62... Line 58...
62 
.calculated:
 58 
 
63 
           mov [MEM_AMOUNT-OS_BASE], esi
 59 
	   mov [MEM_AMOUNT-OS_BASE], esi
64 
           mov [pg_data.mem_amount-OS_BASE], esi
 60 
	   mov [pg_data.mem_amount-OS_BASE], esi
65 
           shr esi, 12
 61 
	   shr esi, 12
66 
           mov [pg_data.pages_count-OS_BASE], esi
 62 
	   mov [pg_data.pages_count-OS_BASE], esi	; max number of PTEs   ?
Line 67... Line 63...
67 
 
 63 
 
68 
           shr edx, 12
 64 
	   shr edx, 12
69 
           add edx, 31
 65 
	   add edx, 31
Line 70... Line -...
70 
           and edx, not 31
 - 
 
71 
           shr edx, 3
 - 
 
72 
           mov [pg_data.pagemap_size-OS_BASE], edx
 - 
 
73 
 
 - 
 
74 
           add edx, (sys_pgmap-OS_BASE)+4095
 - 
 
75 
           and edx, not 4095
 - 
 
76 
           mov [tmp_page_tabs], edx
 - 
 
77 
 
 - 
 
78 
           mov edx, esi
 - 
 
79 
           and edx, -1024
 66 
	   and edx, not 31
80 
           cmp edx, (OS_BASE/4096)
 - 
 
81 
           jbe @F
 67 
	   shr edx, 3
82 
           mov edx, (OS_BASE/4096)
 68 
	   mov [pg_data.pagemap_size-OS_BASE], edx	; size of sys_pgmap structure
83 
           jmp .set
 69 
 
Line 84... Line -...
84 
@@:
 - 
 
85 
           cmp edx, (HEAP_BASE-OS_BASE+HEAP_MIN_SIZE)/4096
 - 
 
86 
           jae .set
 - 
 
87 
           mov edx, (HEAP_BASE-OS_BASE+HEAP_MIN_SIZE)/4096
 - 
 
88 
.set:
 - 
 
89 
           mov [pg_data.kernel_pages-OS_BASE], edx
 - 
 
90 
           shr edx, 10
 70 
	   add edx, (sys_pgmap-OS_BASE)+4095
Line 91... Line 71...
91 
           mov [pg_data.kernel_tables-OS_BASE], edx
 71 
	   and edx, not 4095
92 
 
 72 
	   mov [tmp_page_tabs], edx			; free zone to build PTEs
93 
           xor eax, eax
 73 
 
94 
           mov edi, sys_pgdir-OS_BASE
 74 
	   mov edx, (HEAP_BASE-OS_BASE+HEAP_MIN_SIZE)/4096
95 
           mov ecx, 4096/4
 75 
	   mov [pg_data.kernel_pages -OS_BASE], edx
Line 96... Line 76...
96 
           cld
 76 
	   shr edx, 10
97 
           rep stosd
 77 
	   mov [pg_data.kernel_tables-OS_BASE], edx
Line 98... Line 78...
98 
 
 78 
 
99 
           mov edx, (sys_pgdir-OS_BASE)+ 0x800; (OS_BASE shr 20)
 79 
	   mov edx, (sys_pgdir-OS_BASE)+ 0x800		; (0x800 = OS_BASE shr 20)
100 
 
 - 
 
101 
           mov ebx, cr4
 80 
 
102 
           or ebx, CR4_PSE
 81 
	   mov ebx, cr4
Line 103... Line 82...
103 
           mov eax, PG_LARGE+PG_SW
 82 
	   or  ebx, CR4_PSE
104 
           mov cr4, ebx
 83 
	   mov eax, PG_LARGE+PG_SW
105 
           dec [pg_data.kernel_tables-OS_BASE]
 84 
	   mov cr4, ebx
106 
 
 85 
	   dec [pg_data.kernel_tables-OS_BASE]
Line 107... Line 86...
107 
           mov [edx], eax
 86 
 
108 
           add edx, 4
 87 
	   mov [edx], eax				; map first (physical) 4M bytes
109 
 
 88 
	   add edx, 4
110 
           mov edi, [tmp_page_tabs]
89 
 
111 
           mov ecx, [pg_data.kernel_tables-OS_BASE]
 90 
	   mov edi, [tmp_page_tabs]
Line -... Line 91...
- 
 
 91 
	   mov ecx, [pg_data.kernel_pages -OS_BASE]	; safety cleaning of already-zeroed space
112 
           shl ecx, 10
 92 
	   xor eax, eax
Line 113... Line 93...
113 
           xor eax, eax
 93 
	   rep stosd
114 
           rep stosd
 94 
 
115 
 
 95 
	   mov ecx, [pg_data.kernel_tables-OS_BASE]	; build some PDEs to hold empty PTEs
Line 284... Line 264...
284 
.BIOS32_not_found:
 264 
.BIOS32_not_found:
285 
.end:
 265 
.end:
286 
           ret
266 
	   ret
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287 
 
 267 
 
288 
align 4
 - 
 
289 
proc test_cpu
 - 
 
290 
           locals
 - 
 
291 
              cpu_type   dd ?
 - 
 
292 
              cpu_id     dd ?
 268 
align 4
293 
              cpu_Intel  dd ?
 - 
 
294 
              cpu_AMD    dd ?
 - 
 
Line 295... Line 269...
295 
           endl
 269 
test_cpu:	; only AMD machines supported
296 
 
 - 
 
297 
           xor eax, eax
 270 
 
298 
           mov [cpu_type], eax
 271 
	   xor eax, eax
Line 299... Line 272...
299 
           mov [cpu_caps-OS_BASE], eax
 272 
	   mov [cpu_caps-OS_BASE], eax
300 
           mov [cpu_caps+4-OS_BASE], eax
 273 
	   mov [cpu_caps+4-OS_BASE], eax
Line 306... Line 279...
306 
           push eax
 279 
	   push eax
307 
           popfd
 280 
	   popfd
308 
           pushfd
 281 
	   pushfd
309 
           pop eax
 282 
	   pop eax
310 
           xor eax, ecx
 283 
	   xor eax, ecx
311 
           mov [cpu_type], CPU_386
 - 
 
312 
           jz .end_cpuid
 284 
	   jz $ 		; 386
313 
           push ecx
 285 
	   push ecx
314 
           popfd
 286 
	   popfd
Line 315... Line -...
315 
 
 - 
 
316 
           mov [cpu_type], CPU_486
 287 
 
317 
           mov eax, ecx
 288 
	   mov eax, ecx
318 
           xor eax, 0x200000
 289 
	   xor eax, 0x200000
319 
           push eax
 290 
	   push eax
320 
           popfd
 291 
	   popfd
321 
           pushfd
 292 
	   pushfd
322 
           pop eax
 293 
	   pop eax
323 
           xor eax, ecx
 294 
	   xor eax, ecx
324 
           je .end_cpuid
 - 
 
Line 325... Line 295...
325 
           mov [cpu_id], 1
 295 
	   je $ 		; 486
326 
 
 296 
 
Line 327... Line 297...
327 
           xor eax, eax
 297 
	   xor eax, eax
328 
           cpuid
 298 
	   cpuid
329 
 
 299 
 
330 
           mov [cpu_vendor-OS_BASE], ebx
 - 
 
331 
           mov [cpu_vendor+4-OS_BASE], edx
 - 
 
332 
           mov [cpu_vendor+8-OS_BASE], ecx
 - 
 
333 
           cmp ebx, dword [intel_str-OS_BASE]
 - 
 
334 
           jne .check_AMD
 - 
 
335 
           cmp edx, dword [intel_str+4-OS_BASE]
 - 
 
336 
           jne .check_AMD
 - 
 
337 
           cmp ecx, dword [intel_str+8-OS_BASE]
 - 
 
338 
           jne .check_AMD
 - 
 
339 
           mov [cpu_Intel], 1
 - 
 
340 
           cmp eax, 1
 - 
 
341 
           jl .end_cpuid
 - 
 
342 
           mov eax, 1
 - 
 
343 
           cpuid
 - 
 
344 
           mov [cpu_sign-OS_BASE], eax
 - 
 
345 
           mov [cpu_info-OS_BASE],  ebx
 - 
 
346 
           mov [cpu_caps-OS_BASE],  edx
 - 
 
347 
           mov [cpu_caps+4-OS_BASE],ecx
 - 
 
348 
 
 - 
 
349 
           shr eax, 8
 - 
 
350 
           and eax, 0x0f
 - 
 
351 
           ret
 - 
 
Line 352... Line -...
352 
.end_cpuid:
 - 
 
353 
           mov eax, [cpu_type]
 300 
	   mov [cpu_vendor-OS_BASE],   ebx
354 
           ret
 301 
	   mov [cpu_vendor+4-OS_BASE], edx
355 
 
 302 
	   mov [cpu_vendor+8-OS_BASE], ecx
356 
.check_AMD:
 303 
 
357 
           cmp ebx, dword [AMD_str-OS_BASE]
 304 
	   cmp ebx, dword [AMD_str-OS_BASE]
358 
           jne .unknown
 305 
	   jne $
359 
           cmp edx, dword [AMD_str+4-OS_BASE]
 - 
 
360 
           jne .unknown
 306 
	   cmp edx, dword [AMD_str+4-OS_BASE]
361 
           cmp ecx, dword [AMD_str+8-OS_BASE]
 307 
	   jne $
362 
           jne .unknown
 308 
	   cmp ecx, dword [AMD_str+8-OS_BASE]
363 
           mov [cpu_AMD], 1
 309 
	   jne $
364 
           cmp eax, 1
 310 
	   cmp eax, 1
365 
           jl .unknown
 311 
	   jl $
366 
           mov eax, 1
 312 
	   mov eax, 1
367 
           cpuid
 313 
	   cpuid
368 
           mov [cpu_sign-OS_BASE], eax
 314 
	   mov [cpu_sign-OS_BASE],  eax
369 
           mov [cpu_info-OS_BASE],  ebx
 315 
	   mov [cpu_info-OS_BASE],  ebx
370 
           mov [cpu_caps-OS_BASE],  edx
 316 
	   mov [cpu_caps-OS_BASE],  edx
371 
           mov [cpu_caps+4-OS_BASE],ecx
 - 
 
372 
           shr eax, 8
 - 
 
373 
           and eax, 0x0f
 - 
 
374 
           ret
 - 
 
375 
.unknown:
 - 
 
376 
           mov eax, 1
 - 
 
377 
           cpuid
 - 
 
378 
           mov [cpu_sign-OS_BASE], eax
 - 
 
379 
           mov [cpu_info-OS_BASE],  ebx
 - 
 
380 
           mov [cpu_caps-OS_BASE],  edx
 - 
 
381 
           mov [cpu_caps+4-OS_BASE],ecx
 317 
	   mov [cpu_caps+4-OS_BASE],ecx