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/*-
* Copyright (c) 2005 Rink Springer
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#include <machine/asmacros.h>
.text
/*
* send a command to the PIC16L
*
* void pic16l_setbyte (int addr, int reg, int data)
*
*/
ENTRY(pic16l_setbyte)
push %ebp
mov %esp,%ebp
push %ebx
movw $0xc000,%dx
1: xor %eax,%eax
inw %dx,%ax
shr $0x0b,%eax
and $0x01,%eax
test %eax,%eax
jne 1b
mov $50,%ecx
2: movw $0xc004,%dx
movl 0x8(%ebp),%eax
outb %al,%dx
movw $0xc008,%dx
movl 0xc(%ebp),%eax
outb %al,%dx
movw $0xc006,%dx
movl 0x10(%ebp),%eax
outw %ax,%dx
movw $0xc000,%dx
inw %dx,%ax
outw %ax,%dx
movw $0xc002,%dx
movb $0x1a,%al
outb %al,%dx
movw $0xc000,%dx
3:
inb %dx,%al
movb %al,%bl
orb $0x36,%al
jz 3b
orb $0x10,%bl
jnz 5f
4:
push %ecx
xor %ecx,%ecx
l: loop l
pop %ecx
dec %ecx
jz 5f
jmp 2b
5:
pop %ebx
leave
ret
/*
* instructs the pic16l to reboot the xbox
*
* void pic16l_reboot();
*
*/
ENTRY(pic16l_reboot)
pushl $0x01
pushl $0x02
pushl $0x20
call pic16l_setbyte
addl $12,%esp
ret
/*
* instructs the pic16l to power-off the xbox
*
* void pic16l_poweroff();
*
*/
ENTRY(pic16l_poweroff)
pushl $0x80
pushl $0x02
pushl $0x20
call pic16l_setbyte
addl $12,%esp
ret
pic16l_ledhlp:
movw $0xc000,%dx
1: xor %eax,%eax
inw %dx,%ax
shr $0x0b,%eax
and $0x01,%eax
test %eax,%eax
jne 1b
mov $400,%ecx
2:
movw $0xc004,%dx
movb $0x20,%al
outb %al,%dx
movw $0xc008,%dx
movb %bh,%al
outb %al,%dx
movw $0xc006,%dx
movb %bl,%al
outb %al,%dx
movw $0xc000,%dx
inw %dx,%ax
outw %ax,%dx
movw $0xc002,%dx
movb $0x1a,%al
outb %al,%dx
movw $0xc000,%dx
3:
inb %dx,%al
movb %al,%bl
orb $0x36,%al
jz 3b
orb $0x10,%bl
jz 4f
ret
4:
push %ecx
xor %ecx,%ecx
l2: loop l2
pop %ecx
dec %ecx
jz 5f
jmp 2b
5:
ret
/*
* changes the front led
*
* void pic16l_setled (int val);
*/
ENTRY(pic16l_setled)
push %ebp
mov %esp,%ebp
push %ebx
movl 0x8(%ebp),%ebx
orl $0x800,%ebx
call pic16l_ledhlp
movl $0x701,%ebx
call pic16l_ledhlp
pop %ebx
leave
ret
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