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/*-
* Copyright (c) 2010 Neelkanth Natu
* 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: release/9.1.0/sys/mips/mips/mpboot.S 211218 2010-08-12 11:00:45Z jchandra $
*/
#include <machine/asm.h>
#include <machine/cpu.h>
#include <machine/cpuregs.h>
#include "assym.s"
.text
.set noat
.set noreorder
/* XXX move this to a header file */
#if defined(CPU_CNMIPS)
#define CLEAR_STATUS \
mfc0 a0, MIPS_COP_0_STATUS ;\
li a2, (MIPS_SR_KX | MIPS_SR_SX | MIPS_SR_UX) ; \
or a0, a0, a2 ; \
li a2, ~(MIPS_SR_INT_IE | MIPS_SR_EXL | SR_KSU_USER | MIPS_SR_BEV) ; \
and a0, a0, a2 ; \
mtc0 a0, MIPS_COP_0_STATUS
#elif defined(__mips_n64)
#define CLEAR_STATUS \
li a0, (MIPS_SR_KX | MIPS_SR_UX) ; \
mtc0 a0, MIPS_COP_0_STATUS
#else
#define CLEAR_STATUS \
mtc0 zero, MIPS_COP_0_STATUS
#endif
GLOBAL(mpentry)
CLEAR_STATUS /* disable interrupts */
mtc0 zero, MIPS_COP_0_CAUSE /* clear soft interrupts */
li t0, MIPS_CCA_CACHED /* make sure kseg0 is cached */
mtc0 t0, MIPS_COP_0_CONFIG
COP0_SYNC
jal platform_processor_id /* get the processor number */
nop
move s0, v0
/*
* Initialize stack and call machine startup
*/
PTR_LA sp, _C_LABEL(pcpu_space)
addiu sp, (PAGE_SIZE * 2) - CALLFRAME_SIZ
sll t0, s0, PAGE_SHIFT + 1
addu sp, sp, t0
/* Zero out old ra and old fp for debugger */
sw zero, CALLFRAME_SIZ - 4(sp)
sw zero, CALLFRAME_SIZ - 8(sp)
PTR_LA gp, _C_LABEL(_gp)
jal platform_init_ap
move a0, s0
jal smp_init_secondary
move a0, s0
PANIC("AP startup failed!")