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kernel add
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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/delay.h>
#include <linux/threads.h>
#include <asm/asm.h>
#include <asm/asm-offsets.h>
#include <asm/mipsregs.h>
#include <asm/addrspace.h>
#include <asm/string.h>
#include <asm/netlogic/haldefs.h>
#include <asm/netlogic/common.h>
#include <asm/netlogic/mips-extns.h>
#include <asm/netlogic/xlr/iomap.h>
#include <asm/netlogic/xlr/pic.h>
int xlr_wakeup_secondary_cpus(void)
{
struct nlm_soc_info *nodep;
unsigned int i, j, boot_cpu;
volatile u32 *cpu_ready = nlm_get_boot_data(BOOT_CPU_READY);
/*
* In case of RMI boot, hit with NMI to get the cores
* from bootloader to linux code.
*/
nodep = nlm_get_node(0);
boot_cpu = hard_smp_processor_id();
nlm_set_nmi_handler(nlm_rmiboot_preboot);
for (i = 0; i < NR_CPUS; i++) {
if (i == boot_cpu || !cpumask_test_cpu(i, &nlm_cpumask))
continue;
nlm_pic_send_ipi(nodep->picbase, i, 1, 1); /* send NMI */
}
/* Fill up the coremask early */
nodep->coremask = 1;
for (i = 1; i < nlm_cores_per_node(); i++) {
for (j = 1000000; j > 0; j--) {
if (cpu_ready[i * NLM_THREADS_PER_CORE])
break;
udelay(10);
}
if (j != 0)
nodep->coremask |= (1u << i);
else
pr_err("Failed to wakeup core %d
", i);
}
return 0;
}
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