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;;                                                              ;;
;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;
;; Distributed under terms of the GNU General Public License    ;;
;;                                                              ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

$Revision$




align 4

init_BIOS32:
           mov edi, 0xE0000
.pcibios_nxt:
           cmp dword[edi], '_32_' ; "magic" word
           je .BIOS32_found
.pcibios_nxt2:
           add edi, 0x10
           cmp edi, 0xFFFF0
           je .BIOS32_not_found
           jmp .pcibios_nxt
.BIOS32_found:			; magic word found, check control summ

           movzx ecx, byte[edi + 9]
           shl ecx, 4
           mov esi, edi
           xor eax, eax
           cld   ; paranoia
@@:	lodsb
           add ah, al
           loop @b
           jnz .pcibios_nxt2 ; control summ must be zero
    ; BIOS32 service found !
           mov ebp, [edi + 4]
           mov [bios32_entry], ebp
    ; check PCI BIOS present
           mov eax, '$PCI'
           xor ebx, ebx
           push cs  ; special for 'ret far' from  BIOS
           call ebp
           test al, al
           jnz .PCI_BIOS32_not_found

 ; здесь создаются дискрипторы для PCI BIOS

           add ebx, OS_BASE
           dec ecx
           mov [(pci_code_32-OS_BASE)], cx    ;limit 0-15
           mov [(pci_data_32-OS_BASE)], cx    ;limit 0-15

           mov [(pci_code_32-OS_BASE)+2], bx  ;base  0-15
           mov [(pci_data_32-OS_BASE)+2], bx  ;base  0-15

           shr ebx, 16
           mov [(pci_code_32-OS_BASE)+4], bl  ;base  16-23
           mov [(pci_data_32-OS_BASE)+4], bl  ;base  16-23

           shr ecx, 16
           and cl, 0x0F
           mov ch, bh
           add cx, D32
           mov [(pci_code_32-OS_BASE)+6], cx  ;lim   16-19 &
           mov [(pci_data_32-OS_BASE)+6], cx  ;base  24-31

           mov [(pci_bios_entry-OS_BASE)], edx
         ; jmp .end
.PCI_BIOS32_not_found:
	; здесь должна заполнятся pci_emu_dat
.BIOS32_not_found:
.end:
           ret

align 4
proc test_cpu
           locals
              cpu_type   dd ?
              cpu_id     dd ?
              cpu_Intel  dd ?
              cpu_AMD    dd ?
           endl

           mov [cpu_type], 0
           xor eax, eax
           mov [cpu_caps-OS_BASE], eax
           mov [cpu_caps+4-OS_BASE], eax

           pushfd
           pop eax
           mov ecx, eax
           xor eax, 0x40000
           push eax
           popfd
           pushfd
           pop eax
           xor eax, ecx
           mov [cpu_type], CPU_386
           jz .end_cpuid
           push ecx
           popfd

           mov [cpu_type], CPU_486
           mov eax, ecx
           xor eax, 0x200000
           push eax
           popfd
           pushfd
           pop eax
           xor eax, ecx
           je .end_cpuid
           mov [cpu_id], 1

           xor eax, eax
           cpuid

           mov [cpu_vendor-OS_BASE], ebx
           mov [cpu_vendor+4-OS_BASE], edx
           mov [cpu_vendor+8-OS_BASE], ecx
           cmp ebx, dword [intel_str-OS_BASE]
           jne .check_AMD
           cmp edx, dword [intel_str+4-OS_BASE]
           jne .check_AMD
           cmp ecx, dword [intel_str+8-OS_BASE]
           jne .check_AMD
           mov [cpu_Intel], 1
           cmp eax, 1
           jl .end_cpuid
           mov eax, 1
           cpuid
           mov [cpu_sign-OS_BASE], eax
           mov [cpu_info-OS_BASE],  ebx
           mov [cpu_caps-OS_BASE],  edx
           mov [cpu_caps+4-OS_BASE],ecx

           shr eax, 8
           and eax, 0x0f
           ret
.end_cpuid:
           mov eax, [cpu_type]
           ret

.check_AMD:
           cmp ebx, dword [AMD_str-OS_BASE]
           jne .unknown
           cmp edx, dword [AMD_str+4-OS_BASE]
           jne .unknown
           cmp ecx, dword [AMD_str+8-OS_BASE]
           jne .unknown
           mov [cpu_AMD], 1
           cmp eax, 1
           jl .unknown
           mov eax, 1
           cpuid
           mov [cpu_sign-OS_BASE], eax
           mov [cpu_info-OS_BASE],  ebx
           mov [cpu_caps-OS_BASE],  edx
           mov [cpu_caps+4-OS_BASE],ecx
           shr eax, 8
           and eax, 0x0f
           ret
.unknown:
           mov eax, 1
           cpuid
           mov [cpu_sign-OS_BASE], eax
           mov [cpu_info-OS_BASE],  ebx
           mov [cpu_caps-OS_BASE],  edx
           mov [cpu_caps+4-OS_BASE],ecx
           shr eax, 8
           and eax, 0x0f
           ret
endp