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/*
* Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights
* reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the NetLogic
* license below:
*
* 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 NETLOGIC ``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 NETLOGIC 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.
*/
#include <linux/init.h>
#include <asm/asm.h>
#include <asm/asm-offsets.h>
#include <asm/regdef.h>
#include <asm/mipsregs.h>
#include <asm/stackframe.h>
#include <asm/asmmacro.h>
#include <asm/addrspace.h>
#include <asm/netlogic/common.h>
#include <asm/netlogic/xlp-hal/iomap.h>
#include <asm/netlogic/xlp-hal/xlp.h>
#include <asm/netlogic/xlp-hal/sys.h>
#include <asm/netlogic/xlp-hal/cpucontrol.h>
#define CP0_EBASE $15
.set noreorder
.set noat
.set arch=xlr /* for mfcr/mtcr, XLR is sufficient */
FEXPORT(xlp_boot_core0_siblings) /* "Master" cpu starts from here */
dmtc0 sp, $4, 2 /* SP saved in UserLocal */
SAVE_ALL
sync
/* find the location to which nlm_boot_siblings was relocated */
li t0, CKSEG1ADDR(RESET_VEC_PHYS)
dla t1, nlm_reset_entry
dla t2, nlm_boot_siblings
dsubu t2, t1
daddu t2, t0
/* call it */
jr t2
nop
/* not reached */
NESTED(nlm_boot_secondary_cpus, 16, sp)
/* Initialize CP0 Status */
move t1, zero
#ifdef CONFIG_64BIT
ori t1, ST0_KX
#endif
mtc0 t1, CP0_STATUS
PTR_LA t1, nlm_next_sp
PTR_L sp, 0(t1)
PTR_LA t1, nlm_next_gp
PTR_L gp, 0(t1)
/* a0 has the processor id */
mfc0 a0, CP0_EBASE, 1
andi a0, 0x3ff /* a0 <- node/core */
PTR_LA t0, nlm_early_init_secondary
jalr t0
nop
PTR_LA t0, smp_bootstrap
jr t0
nop
END(nlm_boot_secondary_cpus)
/*
* In case of RMIboot bootloader which is used on XLR boards, the CPUs
* be already woken up and waiting in bootloader code.
* This will get them out of the bootloader code and into linux. Needed
* because the bootloader area will be taken and initialized by linux.
*/
NESTED(nlm_rmiboot_preboot, 16, sp)
mfc0 t0, $15, 1 /* read ebase */
andi t0, 0x1f /* t0 has the processor_id() */
andi t2, t0, 0x3 /* thread num */
sll t0, 2 /* offset in cpu array */
li t3, CKSEG1ADDR(RESET_DATA_PHYS)
ADDIU t1, t3, BOOT_CPU_READY
ADDU t1, t0
li t3, 1
sw t3, 0(t1)
bnez t2, 1f /* skip thread programming */
nop /* for thread id != 0 */
/*
* XLR MMU setup only for first thread in core
*/
li t0, 0x400
mfcr t1, t0
li t2, 6 /* XLR thread mode mask */
nor t3, t2, zero
and t2, t1, t2 /* t2 - current thread mode */
li v0, CKSEG1ADDR(RESET_DATA_PHYS)
lw v1, BOOT_THREAD_MODE(v0) /* v1 - new thread mode */
sll v1, 1
beq v1, t2, 1f /* same as request value */
nop /* nothing to do */
and t2, t1, t3 /* mask out old thread mode */
or t1, t2, v1 /* put in new value */
mtcr t1, t0 /* update core control */
/* wait for NMI to hit */
1: wait
b 1b
nop
END(nlm_rmiboot_preboot)
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