forked from KolibriOS/kolibrios
270 lines
6.7 KiB
PHP
270 lines
6.7 KiB
PHP
|
|
MEM_WB equ 6 ;write-back memory
|
|
MEM_WC equ 1 ;write combined memory
|
|
MEM_UC equ 0 ;uncached memory
|
|
|
|
align 4
|
|
proc mem_test
|
|
|
|
mov eax, cr0
|
|
and eax, not (CR0_CD+CR0_NW)
|
|
or eax, CR0_CD ;disable caching
|
|
mov cr0, eax
|
|
wbinvd ;invalidate cache
|
|
|
|
xor edi, edi
|
|
mov ebx, 'TEST'
|
|
@@:
|
|
add edi, 0x100000
|
|
xchg ebx, dword [edi]
|
|
cmp dword [edi], 'TEST'
|
|
xchg ebx, dword [edi]
|
|
je @b
|
|
mov [MEM_AMOUNT-OS_BASE], edi
|
|
|
|
and eax, not (CR0_CD+CR0_NW) ;enable caching
|
|
mov cr0, eax
|
|
mov eax, edi
|
|
ret
|
|
endp
|
|
|
|
align 4
|
|
proc init_mem
|
|
mov eax, [MEM_AMOUNT-OS_BASE]
|
|
mov [pg_data.mem_amount-OS_BASE], eax
|
|
|
|
shr eax, 12
|
|
mov edx, eax
|
|
mov [pg_data.pages_count-OS_BASE], eax
|
|
shr eax, 3
|
|
mov [pg_data.pagemap_size-OS_BASE], eax
|
|
|
|
cmp edx, (OS_BASE/4096)
|
|
jbe @F
|
|
mov edx, (OS_BASE/4096)
|
|
jmp .set
|
|
@@:
|
|
cmp edx, (HEAP_MIN_SIZE/4096)
|
|
jae .set
|
|
mov edx, (HEAP_MIN_SIZE/4096)
|
|
.set:
|
|
mov [pg_data.kernel_pages-OS_BASE], edx
|
|
shr edx, 10
|
|
mov [pg_data.kernel_tables-OS_BASE], edx
|
|
|
|
xor eax, eax
|
|
mov edi, sys_pgdir-OS_BASE
|
|
mov ecx, 4096/4
|
|
cld
|
|
rep stosd
|
|
|
|
mov edx, (sys_pgdir-OS_BASE)+ 0x800; (OS_BASE shr 20)
|
|
bt [cpu_caps-OS_BASE], CAPS_PSE
|
|
jnc .no_PSE
|
|
|
|
mov ebx, cr4
|
|
or ebx, CR4_PSE
|
|
mov eax, PG_LARGE+PG_SW
|
|
|
|
bt [cpu_caps-OS_BASE], CAPS_PGE
|
|
jnc @F
|
|
|
|
or eax, PG_GLOBAL
|
|
or ebx, CR4_PGE
|
|
@@:
|
|
mov cr4, ebx
|
|
sub [pg_data.kernel_tables-OS_BASE], 1
|
|
|
|
mov [edx], eax
|
|
add eax, 0x00400000
|
|
; mov [edx+4], eax
|
|
add edx, 4
|
|
|
|
mov eax, 0x400000+PG_SW
|
|
mov ecx, (tmp_page_tab-0x400000)/4096
|
|
jmp .map_low
|
|
.no_PSE:
|
|
mov eax, PG_SW
|
|
mov ecx, tmp_page_tab/4096
|
|
.map_low:
|
|
mov edi, tmp_page_tab
|
|
@@: ;
|
|
stosd
|
|
add eax, 0x1000
|
|
dec ecx
|
|
jnz @B
|
|
|
|
mov ecx, [pg_data.kernel_tables-OS_BASE]
|
|
shl ecx, 10
|
|
xor eax, eax
|
|
rep stosd
|
|
|
|
mov ecx, [pg_data.kernel_tables-OS_BASE]
|
|
mov eax, tmp_page_tab+PG_SW
|
|
mov edi, edx
|
|
|
|
.map_kernel_tabs:
|
|
|
|
stosd
|
|
add eax, 0x1000
|
|
dec ecx
|
|
jnz .map_kernel_tabs
|
|
|
|
mov dword [sys_pgdir-OS_BASE+(page_tabs shr 20)], sys_pgdir+PG_SW-OS_BASE
|
|
|
|
mov edi, (sys_pgdir-OS_BASE)
|
|
lea esi, [edi+(OS_BASE shr 20)]
|
|
movsd
|
|
movsd
|
|
movsd
|
|
ret
|
|
endp
|
|
|
|
|
|
|
|
align 4
|
|
proc init_page_map
|
|
|
|
mov edi, sys_pgmap-OS_BASE
|
|
mov ecx, ((HEAP_BASE-OS_BASE)/4096)/32 ;384/4
|
|
mov ebx, ecx
|
|
xor eax,eax
|
|
cld
|
|
rep stosd
|
|
|
|
not eax
|
|
mov ecx, [pg_data.pagemap_size-OS_BASE]
|
|
sub ecx, ebx
|
|
shr ecx, 2
|
|
rep stosd
|
|
|
|
lea edi, [sys_pgmap-OS_BASE+ebx*4] ;+384
|
|
mov edx, [pg_data.pages_count-OS_BASE]
|
|
mov ecx, [pg_data.kernel_tables-OS_BASE]
|
|
add ecx, ((HEAP_BASE-OS_BASE)/4096) and 31
|
|
sub edx, (HEAP_BASE-OS_BASE)/4096
|
|
sub edx, ecx
|
|
mov [pg_data.pages_free-OS_BASE], edx
|
|
|
|
xor eax, eax
|
|
mov ebx, ecx
|
|
shr ecx, 5
|
|
rep stosd
|
|
|
|
not eax
|
|
mov ecx, ebx
|
|
and ecx, 31
|
|
shl eax, cl
|
|
mov [edi], eax
|
|
add edi, OS_BASE
|
|
mov [page_start-OS_BASE], edi;
|
|
|
|
mov ebx, sys_pgmap
|
|
add ebx, [pg_data.pagemap_size-OS_BASE]
|
|
mov [page_end-OS_BASE], ebx
|
|
|
|
mov [pg_data.pg_mutex-OS_BASE], 0
|
|
|
|
ret
|
|
endp
|
|
|
|
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
|
|
|