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/*-
* Copyright (c) 2003 Peter Wemm <peter@FreeBSD.org>
* 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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>
#include <machine/psl.h>
#include <machine/pmap.h>
#include <machine/specialreg.h>
#include "assym.s"
/*
* Compiled KERNBASE location
*/
.globl kernbase,loc_PTmap,loc_PDmap,loc_PDPmap,loc_PML4map,loc_PML4pml4e,dmapbase,dmapend
.set kernbase,KERNBASE
.set loc_PTmap,addr_PTmap
.set loc_PDmap,addr_PDmap
.set loc_PDPmap,addr_PDPmap
.set loc_PML4map,addr_PML4map
.set loc_PML4pml4e,addr_PML4pml4e
.set dmapbase,DMAP_MIN_ADDRESS
.set dmapend,DMAP_MAX_ADDRESS
.text
/**********************************************************************
*
* This is where the loader trampoline start us, set the ball rolling...
*
* We are called with the stack looking like this:
* 0(%rsp) = 32 bit return address (cannot be used)
* 4(%rsp) = 32 bit modulep
* 8(%rsp) = 32 bit kernend
*
* We are already in long mode, on a 64 bit %cs and running at KERNBASE.
*/
NON_GPROF_ENTRY(btext)
/* Tell the bios to warmboot next time */
movw $0x1234,0x472
/* Don't trust what the loader gives for rflags. */
pushq $PSL_KERNEL
popfq
/* Find the metadata pointers before we lose them */
movq %rsp, %rbp
movl 4(%rbp),%edi /* modulep (arg 1) */
movl 8(%rbp),%esi /* kernend (arg 2) */
/* Get onto a stack that we can trust - there is no going back now. */
movq $bootstack,%rsp
xorl %ebp, %ebp
call hammer_time /* set up cpu for unix operation */
movq %rax,%rsp /* set up kstack for mi_startup() */
call mi_startup /* autoconfiguration, mountroot etc */
0: hlt
jmp 0b
.bss
ALIGN_DATA /* just to be sure */
.globl bootstack
.space 0x1000 /* space for bootstack - temporary stack */
bootstack:
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