projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 5c642506 J |
1 | /* |
| 2 | * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights | |
| 3 | * reserved. | |
| 4 | * | |
| 5 | * This software is available to you under a choice of one of two | |
| 6 | * licenses. You may choose to be licensed under the terms of the GNU | |
| 7 | * General Public License (GPL) Version 2, available from the file | |
| 8 | * COPYING in the main directory of this source tree, or the NetLogic | |
| 9 | * license below: | |
| 10 | * | |
| 11 | * Redistribution and use in source and binary forms, with or without | |
| 12 | * modification, are permitted provided that the following conditions | |
| 13 | * are met: | |
| 14 | * | |
| 15 | * 1. Redistributions of source code must retain the above copyright | |
| 16 | * notice, this list of conditions and the following disclaimer. | |
| 17 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 18 | * notice, this list of conditions and the following disclaimer in | |
| 19 | * the documentation and/or other materials provided with the | |
| 20 | * distribution. | |
| 21 | * | |
| 22 | * THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR | |
| 23 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
| 24 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 25 | * ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE | |
| 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| 27 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| 28 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
| 29 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, | |
| 30 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE | |
| 31 | * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN | |
| 32 | * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 33 | */ | |
| 34 | ||
| a74e3353 J |
35 | #include <linux/init.h> |
| 36 | ||
| 5c642506 J |
37 | #include <asm/asm.h> |
| 38 | #include <asm/asm-offsets.h> | |
| 39 | #include <asm/regdef.h> | |
| 40 | #include <asm/mipsregs.h> | |
| 41 | ||
| a74e3353 J |
42 | /* |
| 43 | * Early code for secondary CPUs. This will get them out of the bootloader | |
| 44 | * code and into linux. Needed because the bootloader area will be taken | |
| 45 | * and initialized by linux. | |
| 5c642506 | 46 | */ |
| a74e3353 | 47 | __CPUINIT |
| 5c642506 J |
48 | NESTED(prom_pre_boot_secondary_cpus, 16, sp) |
| 49 | .set mips64 | |
| 50 | mfc0 t0, $15, 1 # read ebase | |
| 51 | andi t0, 0x1f # t0 has the processor_id() | |
| 52 | sll t0, 2 # offset in cpu array | |
| 53 | ||
| 54 | PTR_LA t1, nlm_cpu_ready # mark CPU ready | |
| 55 | PTR_ADDU t1, t0 | |
| 56 | li t2, 1 | |
| 57 | sw t2, 0(t1) | |
| 58 | ||
| 59 | PTR_LA t1, nlm_cpu_unblock | |
| 60 | PTR_ADDU t1, t0 | |
| 61 | 1: lw t2, 0(t1) # wait till unblocked | |
| 62 | beqz t2, 1b | |
| 63 | nop | |
| 64 | ||
| 65 | PTR_LA t1, nlm_next_sp | |
| 66 | PTR_L sp, 0(t1) | |
| 67 | PTR_LA t1, nlm_next_gp | |
| 68 | PTR_L gp, 0(t1) | |
| 69 | ||
| 70 | PTR_LA t0, nlm_early_init_secondary | |
| 71 | jalr t0 | |
| 72 | nop | |
| 73 | ||
| 74 | PTR_LA t0, smp_bootstrap | |
| 75 | jr t0 | |
| 76 | nop | |
| 77 | END(prom_pre_boot_secondary_cpus) | |
| 78 | ||
| a74e3353 J |
79 | /* |
| 80 | * NMI code, used for CPU wakeup, copied to reset entry | |
| 81 | */ | |
| 0c965407 | 82 | EXPORT(nlm_reset_entry) |
| 5c642506 J |
83 | .set push |
| 84 | .set noat | |
| 85 | .set mips64 | |
| 86 | .set noreorder | |
| 87 | ||
| 88 | /* Clear the NMI and BEV bits */ | |
| 89 | MFC0 k0, CP0_STATUS | |
| 90 | li k1, 0xffb7ffff | |
| 91 | and k0, k0, k1 | |
| 92 | MTC0 k0, CP0_STATUS | |
| 93 | ||
| 94 | PTR_LA k1, secondary_entry_point | |
| 95 | PTR_L k0, 0(k1) | |
| 96 | jr k0 | |
| 97 | nop | |
| 98 | .set pop | |
| 0c965407 J |
99 | EXPORT(nlm_reset_entry_end) |
| 100 | __FINIT |