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heuristic for ACPI power off

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git-svn-id: svn://kolibrios.org@1085 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Evgeny Grechnikov (Diamond) 2009-05-26 17:34:06 +00:00
parent 6cec5cc81d
commit 17a996c852
1 changed files with 74 additions and 3 deletions
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77
kernel/trunk/kernel.asm
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@ -5458,7 +5458,7 @@ yes_shutdown_param:
out 0x21, al
out 0xA1, al
if 1
if 0
mov word [OS_BASE+0x467+0],pr_mode_exit
mov word [OS_BASE+0x467+2],0x1000
@ -5471,6 +5471,7 @@ if 1
out 0x64,al
hlt
jmp $-1
else
cmp byte [OS_BASE + 0x9030], 2
@ -5522,6 +5523,72 @@ else
jmp no_acpi_power_off
.fadt_found:
; ebx is linear address of FADT
mov edi, [ebx+40] ; physical address of the DSDT
lea eax, [ebp+4000h]
stdcall map_page, eax, edi, PG_MAP
lea eax, [ebp+5000h]
lea esi, [edi+0x1000]
stdcall map_page, eax, esi, PG_MAP
and esi, 0xFFF
sub edi, esi
cmp dword [esi+ebp+4000h], 'DSDT'
jnz no_acpi_power_off
mov eax, [esi+ebp+4004h] ; DSDT length
sub eax, 36+4
jbe no_acpi_power_off
add esi, 36
.scan_dsdt:
cmp dword [esi+ebp+4000h], '_S5_'
jnz .scan_dsdt_cont
cmp byte [esi+ebp+4000h+4], 12h ; DefPackage opcode
jnz .scan_dsdt_cont
mov dl, [esi+ebp+4000h+6]
cmp dl, 4 ; _S5_ package must contain 4 bytes
; ...in theory; in practice, VirtualBox has 2 bytes
ja .scan_dsdt_cont
cmp dl, 1
jb .scan_dsdt_cont
lea esi, [esi+ebp+4000h+7]
xor ecx, ecx
cmp byte [esi], 0 ; 0 means zero byte, 0Ah xx means byte xx
jz @f
cmp byte [esi], 0xA
jnz no_acpi_power_off
inc esi
mov cl, [esi]
@@:
inc esi
cmp dl, 2
jb @f
cmp byte [esi], 0
jz @f
cmp byte [esi], 0xA
jnz no_acpi_power_off
inc esi
mov ch, [esi]
@@:
jmp do_acpi_power_off
.scan_dsdt_cont:
inc esi
cmp esi, 0x1000
jb @f
sub esi, 0x1000
add edi, 0x1000
push eax
lea eax, [ebp+4000h]
stdcall map_page, eax, edi, PG_MAP
push PG_MAP
lea eax, [edi+1000h]
push eax
lea eax, [ebp+5000h]
push eax
stdcall map_page
pop eax
@@:
dec eax
jnz .scan_dsdt
jmp no_acpi_power_off
do_acpi_power_off:
mov edx, [ebx+48]
test edx, edx
jz .nosmi
@ -5533,17 +5600,20 @@ else
test al, 1
jz @b
.nosmi:
and cx, 0x0707
shl cx, 2
or cx, 0x2020
mov edx, [ebx+64]
in ax, dx
and ax, 203h
or ax, 3C00h
or ah, cl
out dx, ax
mov edx, [ebx+68]
test edx, edx
jz @f
in ax, dx
and ax, 203h
or ax, 3C00h
or ah, ch
out dx, ax
@@:
jmp $
@ -5562,6 +5632,7 @@ no_acpi_power_off:
out 0x64,al
hlt
jmp $-1
scan_rsdp:
add eax, OS_BASE