| /* |
| * 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> |
| |
| /* |
| * Early code for secondary CPUs. This will get them out of the bootloader |
| * code and into linux. Needed because the bootloader area will be taken |
| * and initialized by linux. |
| */ |
| __CPUINIT |
| NESTED(prom_pre_boot_secondary_cpus, 16, sp) |
| .set mips64 |
| mfc0 t0, $15, 1 # read ebase |
| andi t0, 0x1f # t0 has the processor_id() |
| sll t0, 2 # offset in cpu array |
| |
| PTR_LA t1, nlm_cpu_ready # mark CPU ready |
| PTR_ADDU t1, t0 |
| li t2, 1 |
| sw t2, 0(t1) |
| |
| PTR_LA t1, nlm_cpu_unblock |
| PTR_ADDU t1, t0 |
| 1: lw t2, 0(t1) # wait till unblocked |
| beqz t2, 1b |
| nop |
| |
| PTR_LA t1, nlm_next_sp |
| PTR_L sp, 0(t1) |
| PTR_LA t1, nlm_next_gp |
| PTR_L gp, 0(t1) |
| |
| PTR_LA t0, nlm_early_init_secondary |
| jalr t0 |
| nop |
| |
| PTR_LA t0, smp_bootstrap |
| jr t0 |
| nop |
| END(prom_pre_boot_secondary_cpus) |
| __FINIT |
| |
| /* |
| * NMI code, used for CPU wakeup, copied to reset entry |
| */ |
| NESTED(nlm_boot_smp_nmi, 0, sp) |
| .set push |
| .set noat |
| .set mips64 |
| .set noreorder |
| |
| /* Clear the NMI and BEV bits */ |
| MFC0 k0, CP0_STATUS |
| li k1, 0xffb7ffff |
| and k0, k0, k1 |
| MTC0 k0, CP0_STATUS |
| |
| PTR_LA k1, secondary_entry_point |
| PTR_L k0, 0(k1) |
| jr k0 |
| nop |
| .set pop |
| END(nlm_boot_smp_nmi) |
