/*
* $NetBSD: start.s,v 1.8 2011/02/01 20:19:31 chuck Exp $
*
* Copyright (c) 1995 Charles D. Cranor
* 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.
*
* 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.
*/
/*
* start: at address 0x4000, load at 0xa000 (so put stack at 0x9ff0)
*/
#include <m68k/asm.h>
.text
ASENTRY_NOPROFILE(_start)
ASENTRY_NOPROFILE(start)
movb #0,_C_LABEL(reboot)
jra Ldoit
restart:
movb #1,_C_LABEL(reboot) | fall through
Ldoit:
movl #0x00006ff0,%sp
jsr _C_LABEL(sboot)
Lname:
.ascii "sboot\0"
ENTRY_NOPROFILE(go)
clrl %d0 | dev lun
clrl %d1 | ctrl lun
movl #0x2c, %d4 | flags for IPL
movl #0xfffe1800, %a0 | address of "disk" ctrl
movl %sp@(4), %a1 | entry point of loaded program
movl %d0, %a2 | media config block (NULL)
movl %sp@(8), %a3 | nb args (start)
movl %sp@(12), %a4 | nb end args
movl #Lname, %a5 | args
movl #Lname+5, %a6 | end args
| SRT0 will set stack
jmp %a1@ | GO!
