| Achin Gupta | 4f6ad66 | 2013-10-25 09:08:21 +0100 | [diff] [blame] | 1 | /* |
| Dan Handley | e83b0ca | 2014-01-14 18:17:09 +0000 | [diff] [blame] | 2 | * Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved. |
| Achin Gupta | 4f6ad66 | 2013-10-25 09:08:21 +0100 | [diff] [blame] | 3 | * |
| 4 | * Redistribution and use in source and binary forms, with or without |
| 5 | * modification, are permitted provided that the following conditions are met: |
| 6 | * |
| 7 | * Redistributions of source code must retain the above copyright notice, this |
| 8 | * list of conditions and the following disclaimer. |
| 9 | * |
| 10 | * Redistributions in binary form must reproduce the above copyright notice, |
| 11 | * this list of conditions and the following disclaimer in the documentation |
| 12 | * and/or other materials provided with the distribution. |
| 13 | * |
| 14 | * Neither the name of ARM nor the names of its contributors may be used |
| 15 | * to endorse or promote products derived from this software without specific |
| 16 | * prior written permission. |
| 17 | * |
| 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 19 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 21 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| 22 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 23 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 24 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 25 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 26 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 27 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 28 | * POSSIBILITY OF SUCH DAMAGE. |
| 29 | */ |
| 30 | |
| 31 | #include <arch.h> |
| Andrew Thoelke | 38bde41 | 2014-03-18 13:46:55 +0000 | [diff] [blame] | 32 | #include <asm_macros.S> |
| Achin Gupta | 4f6ad66 | 2013-10-25 09:08:21 +0100 | [diff] [blame] | 33 | |
| 34 | .weak cpu_reset_handler |
| 35 | |
| 36 | |
| Andrew Thoelke | 38bde41 | 2014-03-18 13:46:55 +0000 | [diff] [blame] | 37 | func cpu_reset_handler |
| Achin Gupta | 4f6ad66 | 2013-10-25 09:08:21 +0100 | [diff] [blame] | 38 | /* --------------------------------------------- |
| Sandrine Bailleux | c10bd2c | 2013-11-12 16:41:16 +0000 | [diff] [blame] | 39 | * As a bare minimal enable the SMP bit. |
| Achin Gupta | 4f6ad66 | 2013-10-25 09:08:21 +0100 | [diff] [blame] | 40 | * --------------------------------------------- |
| 41 | */ |
| Andrew Thoelke | f977ed8 | 2014-04-28 12:32:02 +0100 | [diff] [blame] | 42 | mrs x0, midr_el1 |
| Achin Gupta | 4f6ad66 | 2013-10-25 09:08:21 +0100 | [diff] [blame] | 43 | lsr x0, x0, #MIDR_PN_SHIFT |
| 44 | and x0, x0, #MIDR_PN_MASK |
| 45 | cmp x0, #MIDR_PN_A57 |
| 46 | b.eq smp_setup_begin |
| 47 | cmp x0, #MIDR_PN_A53 |
| 48 | b.ne smp_setup_end |
| 49 | smp_setup_begin: |
| Andrew Thoelke | f977ed8 | 2014-04-28 12:32:02 +0100 | [diff] [blame] | 50 | mrs x0, CPUECTLR_EL1 |
| Achin Gupta | 4f6ad66 | 2013-10-25 09:08:21 +0100 | [diff] [blame] | 51 | orr x0, x0, #CPUECTLR_SMP_BIT |
| Andrew Thoelke | f977ed8 | 2014-04-28 12:32:02 +0100 | [diff] [blame] | 52 | msr CPUECTLR_EL1, x0 |
| Andrew Thoelke | 42e75a7 | 2014-04-28 12:28:39 +0100 | [diff] [blame] | 53 | isb |
| Achin Gupta | 4f6ad66 | 2013-10-25 09:08:21 +0100 | [diff] [blame] | 54 | smp_setup_end: |
| Andrew Thoelke | f977ed8 | 2014-04-28 12:32:02 +0100 | [diff] [blame] | 55 | ret |