| /* |
| * Copyright (c) 2021, ARM Limited and Contributors. All rights reserved. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| #include <arch.h> |
| #include <asm_macros.S> |
| #include <platform_def.h> |
| |
| .globl plat_is_my_cpu_primary |
| .globl plat_my_core_pos |
| .globl plat_mediatek_calc_core_pos |
| |
| func plat_is_my_cpu_primary |
| mrs x0, mpidr_el1 |
| and x0, x0, #(MPIDR_CLUSTER_MASK | MPIDR_CPU_MASK) |
| cmp x0, #PLAT_PRIMARY_CPU |
| cset x0, eq |
| ret |
| endfunc plat_is_my_cpu_primary |
| |
| /* ----------------------------------------------------- |
| * unsigned int plat_my_core_pos(void) |
| * This function uses the plat_mediatek_calc_core_pos() |
| * definition to get the index of the calling CPU. |
| * ----------------------------------------------------- |
| */ |
| func plat_my_core_pos |
| mrs x0, mpidr_el1 |
| b plat_mediatek_calc_core_pos |
| endfunc plat_my_core_pos |
| |
| /* ----------------------------------------------------- |
| * unsigned int plat_mediatek_calc_core_pos(u_register_t mpidr); |
| * |
| * With this function: CorePos = CoreID (AFF1) |
| * we do it with x0 = (x0 >> 8) & 0xff |
| * ----------------------------------------------------- |
| */ |
| func plat_mediatek_calc_core_pos |
| mov x1, #MPIDR_AFFLVL_MASK |
| and x0, x1, x0, lsr #MPIDR_AFF1_SHIFT |
| ret |
| endfunc plat_mediatek_calc_core_pos |