aabc2/KOS_qrcodes
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don't rely on BIOS for returning to real mode

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git-svn-id: svn://kolibrios.org@5032 a494cfbc-eb01-0410-851d-a64ba20cac60
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CleverMouse
2014-08-15 11:18:27 +00:00
parent 6a10b418b1
commit cd8fe59acc
3 changed files with 72 additions and 33 deletions
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59
kernel/trunk/kernel.asm
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@@ -5452,22 +5452,6 @@ end if
call IRQ_mask_all
if 0
mov word [OS_BASE+0x467+0], pr_mode_exit
mov word [OS_BASE+0x467+2], 0x1000
mov al, 0x0F
out 0x70, al
mov al, 0x05
out 0x71, al
mov al, 0xFE
out 0x64, al
hlt
jmp $-1
else
cmp byte [OS_BASE + 0x9030], 2
jnz no_acpi_power_off
@@ -5613,21 +5597,6 @@ do_acpi_power_off:
jmp $
no_acpi_power_off:
mov word [OS_BASE+0x467+0], pr_mode_exit
mov word [OS_BASE+0x467+2], 0x1000
mov al, 0x0F
out 0x70, al
mov al, 0x05
out 0x71, al
mov al, 0xFE
out 0x64, al
hlt
jmp $-1
scan_rsdp:
add eax, OS_BASE
.s:
@@ -5650,7 +5619,33 @@ scan_rsdp:
stc
.ok:
ret
end if
no_acpi_power_off:
call create_trampoline_pgmap
mov cr3, eax
jmp become_real+0x10000
iglobal
align 4
realmode_gdt:
; selector 0 - not used
dw 23
dd realmode_gdt-OS_BASE
dw 0
; selector 8 - code from 1000:0000 to 1000:FFFF
dw 0FFFFh
dw 0
db 1
db 10011011b
db 00000000b
db 0
; selector 10h - data from 1000:0000 to 1000:FFFF
dw 0FFFFh
dw 0
db 1
db 10010011b
db 00000000b
db 0
endg
if ~ lang eq sp
diff16 "end of .text segment",0,$