1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights
3*4882a593Smuzhiyun * reserved.
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * This software is available to you under a choice of one of two
6*4882a593Smuzhiyun * licenses. You may choose to be licensed under the terms of the GNU
7*4882a593Smuzhiyun * General Public License (GPL) Version 2, available from the file
8*4882a593Smuzhiyun * COPYING in the main directory of this source tree, or the NetLogic
9*4882a593Smuzhiyun * license below:
10*4882a593Smuzhiyun *
11*4882a593Smuzhiyun * Redistribution and use in source and binary forms, with or without
12*4882a593Smuzhiyun * modification, are permitted provided that the following conditions
13*4882a593Smuzhiyun * are met:
14*4882a593Smuzhiyun *
15*4882a593Smuzhiyun * 1. Redistributions of source code must retain the above copyright
16*4882a593Smuzhiyun * notice, this list of conditions and the following disclaimer.
17*4882a593Smuzhiyun * 2. Redistributions in binary form must reproduce the above copyright
18*4882a593Smuzhiyun * notice, this list of conditions and the following disclaimer in
19*4882a593Smuzhiyun * the documentation and/or other materials provided with the
20*4882a593Smuzhiyun * distribution.
21*4882a593Smuzhiyun *
22*4882a593Smuzhiyun * THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR
23*4882a593Smuzhiyun * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
24*4882a593Smuzhiyun * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25*4882a593Smuzhiyun * ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE
26*4882a593Smuzhiyun * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27*4882a593Smuzhiyun * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28*4882a593Smuzhiyun * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
29*4882a593Smuzhiyun * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
30*4882a593Smuzhiyun * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
31*4882a593Smuzhiyun * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
32*4882a593Smuzhiyun * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33*4882a593Smuzhiyun */
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun #include <linux/delay.h>
36*4882a593Smuzhiyun #include <linux/threads.h>
37*4882a593Smuzhiyun
38*4882a593Smuzhiyun #include <asm/asm.h>
39*4882a593Smuzhiyun #include <asm/asm-offsets.h>
40*4882a593Smuzhiyun #include <asm/mipsregs.h>
41*4882a593Smuzhiyun #include <asm/addrspace.h>
42*4882a593Smuzhiyun #include <asm/string.h>
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun #include <asm/netlogic/haldefs.h>
45*4882a593Smuzhiyun #include <asm/netlogic/common.h>
46*4882a593Smuzhiyun #include <asm/netlogic/mips-extns.h>
47*4882a593Smuzhiyun
48*4882a593Smuzhiyun #include <asm/netlogic/xlr/iomap.h>
49*4882a593Smuzhiyun #include <asm/netlogic/xlr/pic.h>
50*4882a593Smuzhiyun
xlr_wakeup_secondary_cpus(void)51*4882a593Smuzhiyun int xlr_wakeup_secondary_cpus(void)
52*4882a593Smuzhiyun {
53*4882a593Smuzhiyun struct nlm_soc_info *nodep;
54*4882a593Smuzhiyun unsigned int i, j, boot_cpu;
55*4882a593Smuzhiyun volatile u32 *cpu_ready = nlm_get_boot_data(BOOT_CPU_READY);
56*4882a593Smuzhiyun
57*4882a593Smuzhiyun /*
58*4882a593Smuzhiyun * In case of RMI boot, hit with NMI to get the cores
59*4882a593Smuzhiyun * from bootloader to linux code.
60*4882a593Smuzhiyun */
61*4882a593Smuzhiyun nodep = nlm_get_node(0);
62*4882a593Smuzhiyun boot_cpu = hard_smp_processor_id();
63*4882a593Smuzhiyun nlm_set_nmi_handler(nlm_rmiboot_preboot);
64*4882a593Smuzhiyun for (i = 0; i < NR_CPUS; i++) {
65*4882a593Smuzhiyun if (i == boot_cpu || !cpumask_test_cpu(i, &nlm_cpumask))
66*4882a593Smuzhiyun continue;
67*4882a593Smuzhiyun nlm_pic_send_ipi(nodep->picbase, i, 1, 1); /* send NMI */
68*4882a593Smuzhiyun }
69*4882a593Smuzhiyun
70*4882a593Smuzhiyun /* Fill up the coremask early */
71*4882a593Smuzhiyun nodep->coremask = 1;
72*4882a593Smuzhiyun for (i = 1; i < nlm_cores_per_node(); i++) {
73*4882a593Smuzhiyun for (j = 1000000; j > 0; j--) {
74*4882a593Smuzhiyun if (cpu_ready[i * NLM_THREADS_PER_CORE])
75*4882a593Smuzhiyun break;
76*4882a593Smuzhiyun udelay(10);
77*4882a593Smuzhiyun }
78*4882a593Smuzhiyun if (j != 0)
79*4882a593Smuzhiyun nodep->coremask |= (1u << i);
80*4882a593Smuzhiyun else
81*4882a593Smuzhiyun pr_err("Failed to wakeup core %d\n", i);
82*4882a593Smuzhiyun }
83*4882a593Smuzhiyun
84*4882a593Smuzhiyun return 0;
85*4882a593Smuzhiyun }
86