mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-27 11:55:06 +00:00
69 lines
2.1 KiB
ArmAsm
69 lines
2.1 KiB
ArmAsm
/*-
|
|
* Copyright (c) 2010 RMI Technologies Ltd.
|
|
* 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/asm.h>
|
|
#include <machine/cpu.h>
|
|
#include <machine/cpuregs.h>
|
|
|
|
#include "assym.s"
|
|
|
|
.text
|
|
.set noat
|
|
.set noreorder
|
|
|
|
/*
|
|
* On XLR the slave processors and threads will be executing boot
|
|
* loader code on startup. We need to make them run our code before
|
|
* blowing away boot loader memory.
|
|
*/
|
|
LEAF(mpwait)
|
|
PTR_LA gp, _C_LABEL(_gp)
|
|
PTR_LA t1, _C_LABEL(xlr_ap_release)
|
|
mfc0 t2, $15, 1
|
|
andi t2, 0x1f
|
|
sll t2, t2, 2
|
|
add t1, t2
|
|
|
|
1: lw t0, 0(t1)
|
|
bnez t0, 2f
|
|
nop /* We should not busy wait in core0 threads */
|
|
nop /* on bootup, this will slow the cpu0 thread */
|
|
nop /* down - TODO - wait with IPI based wakeup */
|
|
nop
|
|
nop
|
|
nop
|
|
nop
|
|
nop
|
|
j 1b
|
|
nop
|
|
2:
|
|
PTR_LA t1, _C_LABEL(mpentry)
|
|
jr t1
|
|
nop
|
|
END(mpwait)
|