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  → /kernel/trunk/boot @ 8092

  → /kernel/trunk/boot @ 8111

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Regard whitespace Rev 8092 → Rev 8111

/kernel/trunk/boot/shutdown.inc
13,33 → 13,12
$Revision$
; ACPI Generic Address Structure
struct GAS
asid db ? ; address space id
bit_width db ?
bit_offset db ?
access_size db ?
address DQ ?
ends
ASID.SYSTEM_MEMORY = 0
ASID.SYSTEM_IO = 1
ASID.PCI_CONFIG = 2
ASID.PCI_EC = 3
ASID.PCI_SMBUS = 4
ACCESS_SIZE.UNDEFINED = 0
ACCESS_SIZE.BYTE = 1
ACCESS_SIZE.WORD = 2
ACCESS_SIZE.DWORD = 3
ACCESS_SIZE.QWORD = 4
align 4
system_shutdown: ; shut down the system
cmp byte [BOOT.shutdown_type], SYSTEM_SHUTDOWN
cmp [BOOT.shutdown_type], SYSTEM_SHUTDOWN
jb @F
cmp byte [BOOT.shutdown_type], SYSTEM_RESTART
cmp [BOOT.shutdown_type], SYSTEM_RESTART
jbe .valid
@@:
ret
83,7 → 62,7
cli
call IRQ_mask_all
mov eax, dword[BOOT.shutdown_type]
movzx eax, [BOOT.shutdown_type]
cmp al, SYSTEM_RESTART
jne @F
98,34 → 77,24
mov ecx, (restart_code_end - restart_code_start)/4
rep movsd
call create_trampoline_pgmap
mov cr3, eax
jmp @F
org $-OS_BASE
@@:
cmp [BOOT.shutdown_type], SYSTEM_SHUTDOWN
jne not_power_off
;disable paging
mov eax, cr0
and eax, 0x7FFFFFFF
mov cr0, eax
mov eax, cr3
mov cr3, eax
cmp byte [BOOT_LO.shutdown_type], SYSTEM_SHUTDOWN
jne no_acpi_power_off
; system_power_off
mov ebx, [acpi_fadt_base-OS_BASE]
cmp dword [ebx], 'FACP'
jne no_acpi_power_off
mov esi, [acpi_dsdt_base-OS_BASE]
cmp dword [esi], 'DSDT'
jne no_acpi_power_off
mov eax, [esi+4] ; DSDT length
mov ebx, [acpi_fadt_base]
test ebx, ebx
jz no_acpi
cmp [ebx+ACPI_TABLE.Signature], 'FACP'
jne no_acpi
mov esi, [acpi_ssdt_base] ; first SSDT is DSDT
test esi, esi
jz no_acpi
cmp [esi+ACPI_TABLE.Signature], 'DSDT'
jne no_acpi
mov eax, [esi+ACPI_TABLE.Length]
sub eax, 36+4
jbe no_acpi_power_off
jbe no_acpi
add esi, 36
.scan_dsdt:
cmp dword [esi], '_S5_'
143,7 → 112,7
cmp byte [esi], 0 ; 0 means zero byte, 0Ah xx means byte xx
jz @f
cmp byte [esi], 0xA
jnz no_acpi_power_off
jnz no_acpi
inc esi
mov cl, [esi]
@@:
153,7 → 122,7
cmp byte [esi], 0
jz @f
cmp byte [esi], 0xA
jnz no_acpi_power_off
jnz no_acpi
inc esi
mov ch, [esi]
@@:
162,14 → 131,14
inc esi
dec eax
jnz .scan_dsdt
jmp no_acpi_power_off
jmp no_acpi
do_acpi_power_off:
mov edx, [ebx+48]
mov edx, [ebx+ACPI_FADT.SMI_CMD]
test edx, edx
jz .nosmi
mov al, [ebx+52]
mov al, [ebx+ACPI_FADT.ACPI_ENABLE]
out dx, al
mov edx, [ebx+64]
mov edx, [ebx+ACPI_FADT.PM1a_CNT_BLK]
@@:
in ax, dx
test al, 1
178,12 → 147,12
and cx, 0x0707
shl cx, 2
or cx, 0x2020
mov edx, [ebx+64]
mov edx, [ebx+ACPI_FADT.PM1a_CNT_BLK]
in ax, dx
and ax, 203h
or ah, cl
out dx, ax
mov edx, [ebx+68]
mov edx, [ebx+ACPI_FADT.PM1b_CNT_BLK]
test edx, edx
jz @f
in ax, dx
191,33 → 160,65
or ah, ch
out dx, ax
@@:
jmp $
jmp no_acpi
no_acpi_power_off:
cmp byte[BOOT_LO.shutdown_type], SYSTEM_REBOOT
jnz no_acpi_reboot
not_power_off:
cmp [BOOT.shutdown_type], SYSTEM_REBOOT
jnz not_reboot
; try to reboot via ACPI fixed features
mov ebx, [acpi_fadt_base-OS_BASE]
cmp dword[ebx], 'FACP'
jne no_acpi_power_off
test dword[ebx+0x70], 1 SHL 10 ; RESET_REG_SUP
jz no_acpi_reboot
cmp [ebx+0x74+GAS.asid], ASID.SYSTEM_IO
jnz no_acpi_reboot
cmp [ebx+0x74+GAS.bit_width], 8
jnz no_acpi_reboot
cmp [ebx+0x74+GAS.bit_offset], 0
jnz no_acpi_reboot
cmp [ebx+0x74+GAS.access_size], ACCESS_SIZE.BYTE
ja no_acpi_reboot
cmp [ebx+0x74+GAS.address.hi], 0
jnz no_acpi_reboot
mov edx, [ebx+0x74+GAS.address.lo]
movzx eax, byte[ebx+0x80]
mov ebx, [acpi_fadt_base]
test ebx, ebx
jz no_acpi
cmp [ebx+ACPI_TABLE.Signature], 'FACP'
jne no_acpi
cmp [ebx+ACPI_FADT.Length], ACPI_FADT.RESET_VALUE
jbe no_acpi
test [ebx+ACPI_FADT.Flags], 1 SHL 10 ; reset_reg_supported
jz no_acpi
cmp [ebx+ACPI_FADT.RESET_REG.ASID], ASID.SYSTEM_IO
jnz no_acpi
cmp [ebx+ACPI_FADT.RESET_REG.BitWidth], 8
jnz no_acpi
cmp [ebx+ACPI_FADT.RESET_REG.BitOffset], 0
jnz no_acpi
cmp [ebx+ACPI_FADT.RESET_REG.AccessSize], ACCESS_SIZE.BYTE
ja no_acpi
cmp [ebx+ACPI_FADT.RESET_REG.Address.hi], 0
jnz no_acpi
; 'enable' ACPI
mov edx, [ebx+ACPI_FADT.SMI_CMD]
test edx, edx
jz .nosmi
mov al, [ebx+ACPI_FADT.ACPI_ENABLE]
out dx, al
jmp $
; unreachable
no_acpi_reboot:
mov edx, [ebx+ACPI_FADT.PM1a_CNT_BLK]
@@:
in ax, dx
test al, 1
jz @b
.nosmi:
mov edx, [ebx+ACPI_FADT.RESET_REG.Address.lo]
movzx eax, [ebx+ACPI_FADT.RESET_VALUE]
out dx, al
jmp no_acpi
not_reboot:
no_acpi:
call create_trampoline_pgmap
mov cr3, eax
jmp @F
org $-OS_BASE
@@:
;disable paging
mov eax, cr0
and eax, 0x7FFFFFFF
mov cr0, eax
mov eax, cr3
mov cr3, eax
jmp 0x50000
align 4
224,7 → 225,7
restart_code_start:
org 0x50000
cmp byte [BOOT_LO.shutdown_type], SYSTEM_RESTART
cmp [BOOT_LO.shutdown_type], SYSTEM_RESTART
jne @F
mov esi, _CLEAN_ZONE-OS_BASE