| Soby Mathew | 748be1d | 2016-05-05 14:10:46 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved. |
| 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 <asm_macros.S> |
| 32 | #include <cpu_data.h> |
| 33 | |
| 34 | .globl _cpu_data |
| 35 | .globl _cpu_data_by_index |
| 36 | |
| 37 | /* ----------------------------------------------------------------- |
| 38 | * cpu_data_t *_cpu_data(void) |
| 39 | * |
| 40 | * Return the cpu_data structure for the current CPU. |
| 41 | * ----------------------------------------------------------------- |
| 42 | */ |
| 43 | func _cpu_data |
| Soby Mathew | adb7027 | 2016-12-06 12:10:51 +0000 | [diff] [blame] | 44 | /* r12 is pushed to meet the 8 byte stack alignment requirement */ |
| 45 | push {r12, lr} |
| Soby Mathew | 748be1d | 2016-05-05 14:10:46 +0100 | [diff] [blame] | 46 | bl plat_my_core_pos |
| Soby Mathew | adb7027 | 2016-12-06 12:10:51 +0000 | [diff] [blame] | 47 | pop {r12, lr} |
| Soby Mathew | 748be1d | 2016-05-05 14:10:46 +0100 | [diff] [blame] | 48 | b _cpu_data_by_index |
| 49 | endfunc _cpu_data |
| 50 | |
| 51 | /* ----------------------------------------------------------------- |
| 52 | * cpu_data_t *_cpu_data_by_index(uint32_t cpu_index) |
| 53 | * |
| 54 | * Return the cpu_data structure for the CPU with given linear index |
| 55 | * |
| 56 | * This can be called without a valid stack. |
| 57 | * clobbers: r0, r1 |
| 58 | * ----------------------------------------------------------------- |
| 59 | */ |
| 60 | func _cpu_data_by_index |
| 61 | ldr r1, =percpu_data |
| 62 | add r0, r1, r0, LSL #CPU_DATA_LOG2SIZE |
| 63 | bx lr |
| 64 | endfunc _cpu_data_by_index |