1/* 2 * Copyright (c) 2024, ARM Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7#include <arch.h> 8#include <asm_macros.S> 9#include <platform_def.h> 10#include <cpu_macros.S> 11 12#define TC_HANDLER(rev) plat_reset_handler_tc##rev 13#define PLAT_RESET_HANDLER(rev) TC_HANDLER(rev) 14 15 .globl plat_arm_calc_core_pos 16 .globl plat_reset_handler 17 18 /* --------------------------------------------------------------------- 19 * unsigned int plat_arm_calc_core_pos(u_register_t mpidr) 20 * 21 * Function to calculate the core position on TC. 22 * 23 * (ClusterId * PLAT_MAX_CPUS_PER_CLUSTER * PLAT_MAX_PE_PER_CPU) + 24 * (CPUId * PLAT_MAX_PE_PER_CPU) + 25 * ThreadId 26 * 27 * which can be simplified as: 28 * 29 * ((ClusterId * PLAT_MAX_CPUS_PER_CLUSTER + CPUId) * PLAT_MAX_PE_PER_CPU) 30 * + ThreadId 31 * --------------------------------------------------------------------- 32 */ 33func plat_arm_calc_core_pos 34 /* 35 * Check for MT bit in MPIDR. If not set, shift MPIDR to left to make it 36 * look as if in a multi-threaded implementation. 37 */ 38 tst x0, #MPIDR_MT_MASK 39 lsl x3, x0, #MPIDR_AFFINITY_BITS 40 csel x3, x3, x0, eq 41 42 /* Extract individual affinity fields from MPIDR */ 43 ubfx x0, x3, #MPIDR_AFF0_SHIFT, #MPIDR_AFFINITY_BITS 44 ubfx x1, x3, #MPIDR_AFF1_SHIFT, #MPIDR_AFFINITY_BITS 45 ubfx x2, x3, #MPIDR_AFF2_SHIFT, #MPIDR_AFFINITY_BITS 46 47 /* Compute linear position */ 48 mov x4, #PLAT_MAX_CPUS_PER_CLUSTER 49 madd x1, x2, x4, x1 50 mov x5, #PLAT_MAX_PE_PER_CPU 51 madd x0, x1, x5, x0 52 ret 53endfunc plat_arm_calc_core_pos 54 55func enable_dsu_pmu_el1_access 56 sysreg_bit_set actlr_el2, CPUACTLR_CLUSTERPMUEN 57 sysreg_bit_set actlr_el3, CPUACTLR_CLUSTERPMUEN 58 ret 59endfunc enable_dsu_pmu_el1_access 60 61func TC_HANDLER(2) 62 ret 63endfunc TC_HANDLER(2) 64 65func TC_HANDLER(3) 66 mov x9, lr 67 bl enable_dsu_pmu_el1_access 68 mov lr, x9 69 ret 70endfunc TC_HANDLER(3) 71 72 /* ----------------------------------------------------- 73 * void plat_reset_handler(void); 74 * ----------------------------------------------------- 75 */ 76func plat_reset_handler 77 mov x8, lr 78 bl PLAT_RESET_HANDLER(TARGET_PLATFORM) 79 mov lr, x8 80 ret 81endfunc plat_reset_handler 82