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Rev 837 Rev 838
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;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;
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;; Copyright (C) KolibriOS team 2004-2007. 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: 837 $
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$Revision: 838 $
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MEM_WB     equ 6               ;write-back memory
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MEM_WC     equ 1               ;write combined memory
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MEM_UC     equ 0               ;uncached memory
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align 4
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proc mem_test
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           mov eax, cr0
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           and eax, not (CR0_CD+CR0_NW)
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           or eax, CR0_CD         ;disable caching
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           mov cr0, eax
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           wbinvd                 ;invalidate cache
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           xor edi, edi
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           mov ebx, 'TEST'
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@@:
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           add edi, 0x100000
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           xchg ebx, dword [edi]
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           cmp dword [edi], 'TEST'
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           xchg ebx, dword [edi]
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           je @b
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           mov [MEM_AMOUNT-OS_BASE], edi
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           and eax, not (CR0_CD+CR0_NW)  ;enable caching
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           mov cr0, eax
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MEM_WB     equ 6               ;write-back memory
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           mov eax, edi
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MEM_WC     equ 1               ;write combined memory
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           ret
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MEM_UC     equ 0               ;uncached memory
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endp
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align 4
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proc init_mem
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           mov ecx, [0x2F0000 + 0x9100]
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align 4
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           test ecx, ecx
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proc init_mem
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           jz .nosmap
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           mov ecx, [0x2F0000 + 0x9100]
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           xor eax, eax
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           mov esi, 0x2F0000 + 0x9104
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           mov eax, [esi+8]
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           mov eax, [esi+8]
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.next:
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.next:
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           add esi, 20
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           add esi, 20
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           loop @B
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           loop @B
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           mov [MEM_AMOUNT-OS_BASE], eax
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           jmp @F
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.nosmap:
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	   call mem_test
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           and eax, -4096
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           mov eax, [MEM_AMOUNT-OS_BASE]
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@@:
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           mov [MEM_AMOUNT-OS_BASE], eax
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           mov [pg_data.mem_amount-OS_BASE], eax
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           mov [pg_data.mem_amount-OS_BASE], eax
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