| /* |
| * Copyright (c) 2014-2015, ARM Limited and Contributors. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * Redistributions of source code must retain the above copyright notice, this |
| * list of conditions and the following disclaimer. |
| * |
| * 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. |
| * |
| * Neither the name of ARM nor the names of its contributors may be used |
| * to endorse or promote products derived from this software without specific |
| * prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 THE COPYRIGHT HOLDER 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 <asm_macros.S> |
| #include <cpu_data.h> |
| |
| .globl init_cpu_data_ptr |
| .globl _cpu_data_by_index |
| |
| /* ----------------------------------------------------------------- |
| * void init_cpu_data_ptr(void) |
| * |
| * Initialise the TPIDR_EL3 register to refer to the cpu_data_t |
| * for the calling CPU. This must be called before cm_get_cpu_data() |
| * |
| * This can be called without a valid stack. It assumes that |
| * plat_my_core_pos() does not clobber register x10. |
| * clobbers: x0, x1, x10 |
| * ----------------------------------------------------------------- |
| */ |
| func init_cpu_data_ptr |
| mov x10, x30 |
| bl plat_my_core_pos |
| bl _cpu_data_by_index |
| msr tpidr_el3, x0 |
| ret x10 |
| endfunc init_cpu_data_ptr |
| |
| /* ----------------------------------------------------------------- |
| * cpu_data_t *_cpu_data_by_index(uint32_t cpu_index) |
| * |
| * Return the cpu_data structure for the CPU with given linear index |
| * |
| * This can be called without a valid stack. |
| * clobbers: x0, x1 |
| * ----------------------------------------------------------------- |
| */ |
| func _cpu_data_by_index |
| adr x1, percpu_data |
| add x0, x1, x0, LSL #CPU_DATA_LOG2SIZE |
| ret |
| endfunc _cpu_data_by_index |