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Rev 5565 Rev 5629
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;; Copyright (C) KolibriOS team 2004-2015. All rights reserved. ;;
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;; Copyright (C) KolibriOS team 2004-2015. 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: 5565 $
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$Revision: 5629 $
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acpi_fadt_base    rd 1
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acpi_fadt_base    rd 1
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acpi_dsdt_base    rd 1
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acpi_dsdt_base    rd 1
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acpi_dsdt_size    rd 1
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acpi_dsdt_size    rd 1
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acpi_madt_base    rd 1
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acpi_madt_base    rd 1
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acpi_ioapic_base  rd 1
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acpi_ioapic_base  rd 1
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acpi_hpet_base    rd 1
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hpet_base         rd 1
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hpet_period       rd 1
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cpu_count         rd 1
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cpu_count         rd 1
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smpt              rd 16
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smpt              rd 16
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endg
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endg
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ACPI_HI_RSDP_WINDOW_START  equ 0x000E0000
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ACPI_HI_RSDP_WINDOW_START  equ 0x000E0000
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ACPI_HI_RSDP_WINDOW_END    equ 0x00100000
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ACPI_RSDP_CHECKSUM_LENGTH  equ 20
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ACPI_HI_RSDP_WINDOW_END    equ 0x00100000
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ACPI_RSDP_CHECKSUM_LENGTH  equ 20
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ACPI_HPET_SIGN             equ 0x54455048
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ACPI_MADT_SIGN             equ 0x43495041
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ACPI_MADT_SIGN             equ 0x43495041
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        call    acpi_locate
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        call    acpi_locate
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        test    eax, eax
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        test    eax, eax
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        jz      .done
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        jz      .done
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        mov     ecx, [eax+16]
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        mov     ecx, [eax+16]
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        mov     edx, 0x50434146
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        mov     edx, ACPI_FADT_SIGN
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        mov     [acpi_rsdt_base-OS_BASE], ecx
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        mov     [acpi_rsdt_base-OS_BASE], ecx
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        call    rsdt_find
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        call    rsdt_find
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        mov     [acpi_fadt_base-OS_BASE], eax
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        mov     [acpi_fadt_base-OS_BASE], eax
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        test    eax, eax
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        test    eax, eax
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        jz      @f
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        jz      @f
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        mov     eax, [eax+40]
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        mov     eax, [eax+40]
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        mov     [acpi_dsdt_base-OS_BASE], eax
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        mov     [acpi_dsdt_base-OS_BASE], eax
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        mov     eax, [eax+4]
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        mov     [acpi_dsdt_size-OS_BASE], eax
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@@:
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        mov     edx, ACPI_HPET_SIGN
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        mov     ecx, [acpi_rsdt_base-OS_BASE]
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        call    rsdt_find
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        test    eax, eax
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        jz      @F
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        mov     eax, [eax+4]
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        mov     [acpi_hpet_base-OS_BASE], eax
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        mov     [acpi_dsdt_size-OS_BASE], eax
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        mov     eax, [eax+44]
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        mov     [hpet_base-OS_BASE], eax
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@@:
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@@:
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        mov     edx, ACPI_MADT_SIGN
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        mov     edx, ACPI_MADT_SIGN
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        jne     .next
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        jne     .next
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        mov     eax, [edx+4]
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        mov     eax, [edx+4]
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        mov     [acpi_ioapic_base-OS_BASE], eax
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        mov     [acpi_ioapic_base-OS_BASE], eax
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        jmp     .next
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HPET_PERIOD             equ 0x004
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HPET_CFG_ENABLE         equ     1
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HPET_CFG                equ 0x010
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align 4
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init_hpet:
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        mov     ebx, [hpet_base-OS_BASE]
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        mov     eax, [ebx+HPET_PERIOD]
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        mov     edx, 0x431BDE83
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        mul     edx
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        shr     edx, 18
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        mov     [hpet_period-OS_BASE], edx
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        mov     eax, [ebx+HPET_CFG]
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        and     eax, not HPET_CFG_ENABLE
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        mov     [ebx+HPET_CFG], eax     ;stop main counter
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        xor     ecx, ecx
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        mov     [ebx+0xF0], ecx         ;reset counter
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        mov     [ebx+0xF4], ecx
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        or      eax, HPET_CFG_ENABLE
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        mov     [ebx+HPET_CFG], eax     ;and start again
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        ret
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