forked from KolibriOS/kolibrios
326 lines
8.2 KiB
PHP
326 lines
8.2 KiB
PHP
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$Revision$
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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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mov eax, edi
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ret
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endp
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align 4
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proc init_mem
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mov eax, [MEM_AMOUNT-OS_BASE]
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mov [pg_data.mem_amount-OS_BASE], eax
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shr eax, 12
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mov edx, eax
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mov [pg_data.pages_count-OS_BASE], eax
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shr eax, 3
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mov [pg_data.pagemap_size-OS_BASE], eax
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add eax, (sys_pgmap-OS_BASE)+4095
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and eax, not 4095
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mov [tmp_page_tabs], eax
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cmp edx, (OS_BASE/4096)
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jbe @F
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mov edx, (OS_BASE/4096)
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jmp .set
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@@:
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cmp edx, (HEAP_MIN_SIZE/4096)
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jae .set
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mov edx, (HEAP_MIN_SIZE/4096)
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.set:
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mov [pg_data.kernel_pages-OS_BASE], edx
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shr edx, 10
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mov [pg_data.kernel_tables-OS_BASE], edx
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xor eax, eax
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mov edi, sys_pgdir-OS_BASE
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mov ecx, 4096/4
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cld
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rep stosd
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mov edx, (sys_pgdir-OS_BASE)+ 0x800; (OS_BASE shr 20)
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bt [cpu_caps-OS_BASE], CAPS_PSE
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jnc .no_PSE
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mov ebx, cr4
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or ebx, CR4_PSE
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mov eax, PG_LARGE+PG_SW
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mov cr4, ebx
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dec [pg_data.kernel_tables-OS_BASE]
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mov [edx], eax
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add eax, 0x00400000
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add edx, 4
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mov eax, 0x400000+PG_SW
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mov ecx, [tmp_page_tabs]
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sub ecx, 0x400000
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shr ecx, 12 ;ecx/=4096
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jmp .map_low
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.no_PSE:
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mov eax, PG_SW
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mov ecx, [tmp_page_tabs]
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shr ecx, 12
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.map_low:
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mov edi, [tmp_page_tabs]
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@@: ;
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stosd
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add eax, 0x1000
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dec ecx
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jnz @B
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mov ecx, [pg_data.kernel_tables-OS_BASE]
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shl ecx, 10
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xor eax, eax
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rep stosd
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mov ecx, [pg_data.kernel_tables-OS_BASE]
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mov eax, [tmp_page_tabs]
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or eax, PG_SW
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mov edi, edx
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.map_kernel_tabs:
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stosd
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add eax, 0x1000
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dec ecx
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jnz .map_kernel_tabs
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mov dword [sys_pgdir-OS_BASE+(page_tabs shr 20)], sys_pgdir+PG_SW-OS_BASE
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mov edi, (sys_pgdir-OS_BASE)
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lea esi, [edi+(OS_BASE shr 20)]
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movsd
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movsd
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ret
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endp
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align 4
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proc init_page_map
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mov edi, sys_pgmap-OS_BASE
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mov ecx, [pg_data.pagemap_size-OS_BASE]
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shr ecx, 2
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or eax, -1
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cld
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rep stosd
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mov ecx, [tmp_page_tabs]
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mov edx, [pg_data.pages_count-OS_BASE]
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shr ecx, 12
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add ecx, [pg_data.kernel_tables-OS_BASE]
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sub edx, ecx
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mov [pg_data.pages_free-OS_BASE], edx
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mov edi, sys_pgmap-OS_BASE
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mov ebx, ecx
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shr ecx, 5
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xor eax, eax
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rep stosd
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not eax
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mov ecx, ebx
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and ecx, 31
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shl eax, cl
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mov [edi], eax
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add edi, OS_BASE
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mov [page_start-OS_BASE], edi;
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mov ebx, sys_pgmap
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add ebx, [pg_data.pagemap_size-OS_BASE]
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mov [page_end-OS_BASE], ebx
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mov [pg_data.pg_mutex-OS_BASE], 0
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ret
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endp
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align 4
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init_BIOS32:
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mov edi, 0xE0000
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.pcibios_nxt:
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cmp dword[edi], '_32_' ; "magic" word
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je .BIOS32_found
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.pcibios_nxt2:
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add edi, 0x10
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cmp edi, 0xFFFF0
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je .BIOS32_not_found
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jmp .pcibios_nxt
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.BIOS32_found: ; magic word found, check control summ
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movzx ecx, byte[edi + 9]
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shl ecx, 4
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mov esi, edi
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xor eax, eax
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cld ; paranoia
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@@: lodsb
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add ah, al
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loop @b
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jnz .pcibios_nxt2 ; control summ must be zero
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; BIOS32 service found !
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mov ebp, [edi + 4]
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mov [bios32_entry], ebp
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; check PCI BIOS present
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mov eax, '$PCI'
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xor ebx, ebx
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push cs ; special for 'ret far' from BIOS
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call ebp
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test al, al
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jnz .PCI_BIOS32_not_found
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; <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD> PCI BIOS
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add ebx, OS_BASE
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dec ecx
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mov [(pci_code_32-OS_BASE)], cx ;limit 0-15
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mov [(pci_data_32-OS_BASE)], cx ;limit 0-15
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mov [(pci_code_32-OS_BASE)+2], bx ;base 0-15
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mov [(pci_data_32-OS_BASE)+2], bx ;base 0-15
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shr ebx, 16
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mov [(pci_code_32-OS_BASE)+4], bl ;base 16-23
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mov [(pci_data_32-OS_BASE)+4], bl ;base 16-23
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shr ecx, 16
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and cl, 0x0F
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mov ch, bh
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add cx, D32
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mov [(pci_code_32-OS_BASE)+6], cx ;lim 16-19 &
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mov [(pci_data_32-OS_BASE)+6], cx ;base 24-31
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mov [(pci_bios_entry-OS_BASE)], edx
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; jmp .end
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.PCI_BIOS32_not_found:
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; <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> pci_emu_dat
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.BIOS32_not_found:
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.end:
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align 4
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proc test_cpu
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locals
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cpu_type dd ?
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cpu_id dd ?
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cpu_Intel dd ?
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cpu_AMD dd ?
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endl
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mov [cpu_type], 0
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xor eax, eax
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mov [cpu_caps-OS_BASE], eax
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mov [cpu_caps+4-OS_BASE], eax
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pushfd
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pop eax
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mov ecx, eax
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xor eax, 0x40000
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push eax
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popfd
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pushfd
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pop eax
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xor eax, ecx
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mov [cpu_type], CPU_386
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jz .end_cpuid
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push ecx
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popfd
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mov [cpu_type], CPU_486
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mov eax, ecx
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xor eax, 0x200000
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push eax
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popfd
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pushfd
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pop eax
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xor eax, ecx
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je .end_cpuid
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mov [cpu_id], 1
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xor eax, eax
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cpuid
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mov [cpu_vendor-OS_BASE], ebx
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mov [cpu_vendor+4-OS_BASE], edx
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mov [cpu_vendor+8-OS_BASE], ecx
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cmp ebx, dword [intel_str-OS_BASE]
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jne .check_AMD
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cmp edx, dword [intel_str+4-OS_BASE]
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jne .check_AMD
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cmp ecx, dword [intel_str+8-OS_BASE]
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jne .check_AMD
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mov [cpu_Intel], 1
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cmp eax, 1
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jl .end_cpuid
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mov eax, 1
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cpuid
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mov [cpu_sign-OS_BASE], eax
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mov [cpu_info-OS_BASE], ebx
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mov [cpu_caps-OS_BASE], edx
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mov [cpu_caps+4-OS_BASE],ecx
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shr eax, 8
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and eax, 0x0f
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ret
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.end_cpuid:
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mov eax, [cpu_type]
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ret
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.check_AMD:
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cmp ebx, dword [AMD_str-OS_BASE]
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jne .unknown
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cmp edx, dword [AMD_str+4-OS_BASE]
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jne .unknown
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cmp ecx, dword [AMD_str+8-OS_BASE]
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jne .unknown
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mov [cpu_AMD], 1
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cmp eax, 1
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jl .unknown
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mov eax, 1
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cpuid
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mov [cpu_sign-OS_BASE], eax
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mov [cpu_info-OS_BASE], ebx
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mov [cpu_caps-OS_BASE], edx
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mov [cpu_caps+4-OS_BASE],ecx
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shr eax, 8
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and eax, 0x0f
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ret
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.unknown:
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mov eax, 1
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cpuid
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mov [cpu_sign-OS_BASE], eax
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mov [cpu_info-OS_BASE], ebx
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mov [cpu_caps-OS_BASE], edx
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mov [cpu_caps+4-OS_BASE],ecx
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shr eax, 8
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and eax, 0x0f
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ret
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endp
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