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|
// APM BIOS support for the Bochs BIOS
// Copyright (C) 2004 Fabrice Bellard
//
// Debugging extensions, 16-bit interface and extended power options
// Copyright (C) 2005 Struan Bartlett
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#if defined(APM_REAL)
#define APMSYM(s) apmreal_ ## s
#elif defined(APM_PROT16)
#define APMSYM(s) apm16_ ## s
#elif defined(APM_PROT32)
#define APMSYM(s) apm32_ ## s
#else
#error unsupported APM mode
#endif
APMSYM(out_str):
push eax
push ebx
mov ebx, eax
APMSYM(out_str1):
SEG CS
mov al, byte ptr [bx]
cmp al, #0
je APMSYM(out_str2)
outb dx, al
inc ebx
jmp APMSYM(out_str1)
APMSYM(out_str2):
pop ebx
pop eax
ret
APMSYM(07_poweroff_str):
.ascii "Shutdown"
db 0
APMSYM(07_suspend_str):
.ascii "Suspend"
db 0
APMSYM(07_standby_str):
.ascii "Standby"
db 0
#if DEBUG_APM
APMSYM(put_str):
push edx
mov dx, #INFO_PORT
call APMSYM(out_str)
pop edx
ret
; print the hex number in eax
APMSYM(put_num):
push eax
push ebx
push ecx
push edx
mov ecx, eax
mov bx, #8
mov dx, #INFO_PORT
APMSYM(put_num1):
mov eax, ecx
shr eax, #28
add al, #0x30
cmp al, #0x39
jbe APMSYM(put_num2)
add al, #0x27
APMSYM(put_num2):
outb dx, al
shl ecx, #4
dec bx
jne APMSYM(put_num1)
pop edx
pop ecx
pop ebx
pop eax
ret
APMSYM(put_reg):
outb dx, al
shr eax, #8
outb dx, al
shr eax, #8
outb dx, al
shr eax, #8
outb dx, al
mov eax,ebx
call APMSYM(put_num)
mov al, #0x3b
outb dx,al
mov al, #0x20
outb dx,al
ret
APMSYM(put_regs):
push eax
push edx
push ebx
mov dx, #INFO_PORT
mov ebx, eax
mov eax, #0x3d584145 // 'EAX='
call APMSYM(put_reg)
pop ebx
push ebx
mov eax, #0x3d584245 // 'EBX='
call APMSYM(put_reg)
mov ebx, ecx
mov eax, #0x3d584345 // 'ECX='
call APMSYM(put_reg)
mov ebx, edx
mov eax, #0x3d584445 // 'EDX='
call APMSYM(put_reg)
mov ebx, esi
mov eax, #0x3d495345 // 'ESI='
call APMSYM(put_reg)
mov ebx, edi
mov eax, #0x3d494445 // 'EDI='
call APMSYM(put_reg)
mov al, #0x0a
outb dx, al
pop ebx
pop edx
pop eax
ret
#endif
#if defined(APM_PROT32)
_apm32_entry:
#endif
#if defined(APM_PROT16)
_apm16_entry:
#endif
pushf
#if defined(APM_REAL)
_apmreal_entry:
#endif
#if DEBUG_APM
call APMSYM(put_regs)
#endif
#if defined(APM_REAL)
;-----------------
; APM installation check
APMSYM(00):
cmp al, #0x00
jne APMSYM(01)
mov ah, #1 // APM major version
mov al, #2 // APM minor version
mov bh, #0x50 // 'P'
mov bl, #0x4d // 'M'
// bit 0 : 16 bit interface supported
// bit 1 : 32 bit interface supported
mov cx, #0x3
jmp APMSYM(ok)
;-----------------
; APM real mode interface connect
APMSYM(01):
cmp al, #0x01
jne APMSYM(02)
jmp APMSYM(ok)
;-----------------
; APM 16 bit protected mode interface connect
APMSYM(02):
cmp al, #0x02
jne APMSYM(03)
mov bx, #_apm16_entry
mov ax, #0xf000 // 16 bit code segment base
mov si, #0xfff0 // 16 bit code segment size
mov cx, #0xf000 // data segment address
mov di, #0xfff0 // data segment length
jmp APMSYM(ok)
;-----------------
; APM 32 bit protected mode interface connect
APMSYM(03):
cmp al, #0x03
jne APMSYM(04)
mov ax, #0xf000 // 32 bit code segment base
mov ebx, #_apm32_entry
mov cx, #0xf000 // 16 bit code segment base
// 32 bit code segment size (low 16 bits)
// 16 bit code segment size (high 16 bits)
mov esi, #0xfff0fff0
mov dx, #0xf000 // data segment address
mov di, #0xfff0 // data segment length
jmp APMSYM(ok)
#endif
;-----------------
; APM interface disconnect
APMSYM(04):
cmp al, #0x04
jne APMSYM(05)
jmp APMSYM(ok)
;-----------------
; APM cpu idle
APMSYM(05):
cmp al, #0x05
jne APMSYM(07)
pushf ; XEN
sti ; XEN: OS calls us with ints disabled -- better re-enable here!
hlt
popf ; XEN
jmp APMSYM(ok)
;-----------------
; APM Set Power State
APMSYM(07):
cmp al, #0x07
jne APMSYM(08)
cmp bx, #1
jne APMSYM(ok)
cmp cx, #3
je APMSYM(07_poweroff)
cmp cx, #2
je APMSYM(07_suspend)
cmp cx, #1
je APMSYM(07_standby)
jne APMSYM(ok)
APMSYM(07_poweroff):
// send power off event to emulator
cli
mov dx, #0x8900
mov ax, #APMSYM(07_poweroff_str)
call APMSYM(out_str)
APMSYM(07_1):
hlt
jmp APMSYM(07_1)
APMSYM(07_suspend):
push edx
mov dx, #0x8900
mov ax, #APMSYM(07_suspend_str)
call APMSYM(out_str)
pop edx
jmp APMSYM(ok)
APMSYM(07_standby):
push edx
mov dx, #0x8900
mov ax, #APMSYM(07_standby_str)
call APMSYM(out_str)
pop edx
jmp APMSYM(ok)
;-----------------
; APM Enable / Disable
APMSYM(08):
cmp al, #0x08
jne APMSYM(0a)
jmp APMSYM(ok)
;-----------------
; Get Power Status
APMSYM(0a):
cmp al, #0x0a
jne APMSYM(0b)
mov bh, #0x01 // on line
// mov bh, #0x02 // battery
mov bl, #0xff // unknown battery status
// mov bl, #0x03 // charging
mov ch, #0x80 // no system battery
// mov ch, #0x8 // charging
mov cl, #0xff // unknown remaining time
// mov cl, #50
mov dx, #0xffff // unknown remaining time
mov si, #0 // zero battery
// mov si, #1 // one battery
jmp APMSYM(ok)
;-----------------
; Get PM Event
APMSYM(0b):
cmp al, #0x0b
jne APMSYM(0e)
mov ah, #0x80 // no event pending
jmp APMSYM(error)
;-----------------
; APM Driver Version
APMSYM(0e):
cmp al, #0x0e
jne APMSYM(0f)
mov ah, #1
mov al, #2
jmp APMSYM(ok)
;-----------------
; APM Engage / Disengage
APMSYM(0f):
cmp al, #0x0f
jne APMSYM(10)
jmp APMSYM(ok)
;-----------------
; APM Get Capabilities
APMSYM(10):
cmp al, #0x10
jne APMSYM(unimplemented)
mov bl, #0
mov cx, #0
jmp APMSYM(ok)
;-----------------
APMSYM(ok):
popf
clc
#if defined(APM_REAL)
jmp iret_modify_cf
#else
retf
#endif
APMSYM(unimplemented):
APMSYM(error):
popf
stc
#if defined(APM_REAL)
jmp iret_modify_cf
#else
retf
#endif
#undef APM_PROT32
#undef APM_PROT16
#undef APM_REAL
#undef APMSYM
|
