1*877cf3ffSSoby Mathew/* 2*877cf3ffSSoby Mathew * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved. 3*877cf3ffSSoby Mathew * 4*877cf3ffSSoby Mathew * Redistribution and use in source and binary forms, with or without 5*877cf3ffSSoby Mathew * modification, are permitted provided that the following conditions are met: 6*877cf3ffSSoby Mathew * 7*877cf3ffSSoby Mathew * Redistributions of source code must retain the above copyright notice, this 8*877cf3ffSSoby Mathew * list of conditions and the following disclaimer. 9*877cf3ffSSoby Mathew * 10*877cf3ffSSoby Mathew * Redistributions in binary form must reproduce the above copyright notice, 11*877cf3ffSSoby Mathew * this list of conditions and the following disclaimer in the documentation 12*877cf3ffSSoby Mathew * and/or other materials provided with the distribution. 13*877cf3ffSSoby Mathew * 14*877cf3ffSSoby Mathew * Neither the name of ARM nor the names of its contributors may be used 15*877cf3ffSSoby Mathew * to endorse or promote products derived from this software without specific 16*877cf3ffSSoby Mathew * prior written permission. 17*877cf3ffSSoby Mathew * 18*877cf3ffSSoby Mathew * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 19*877cf3ffSSoby Mathew * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20*877cf3ffSSoby Mathew * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21*877cf3ffSSoby Mathew * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 22*877cf3ffSSoby Mathew * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23*877cf3ffSSoby Mathew * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24*877cf3ffSSoby Mathew * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25*877cf3ffSSoby Mathew * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26*877cf3ffSSoby Mathew * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27*877cf3ffSSoby Mathew * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28*877cf3ffSSoby Mathew * POSSIBILITY OF SUCH DAMAGE. 29*877cf3ffSSoby Mathew */ 30*877cf3ffSSoby Mathew#include <asm_macros.S> 31*877cf3ffSSoby Mathew#include <platform_def.h> 32*877cf3ffSSoby Mathew 33*877cf3ffSSoby Mathew .weak plat_arm_calc_core_pos 34*877cf3ffSSoby Mathew .weak plat_my_core_pos 35*877cf3ffSSoby Mathew 36*877cf3ffSSoby Mathew /* ----------------------------------------------------- 37*877cf3ffSSoby Mathew * unsigned int plat_my_core_pos(void) 38*877cf3ffSSoby Mathew * This function uses the plat_arm_calc_core_pos() 39*877cf3ffSSoby Mathew * definition to get the index of the calling CPU. 40*877cf3ffSSoby Mathew * ----------------------------------------------------- 41*877cf3ffSSoby Mathew */ 42*877cf3ffSSoby Mathewfunc plat_my_core_pos 43*877cf3ffSSoby Mathew ldcopr r0, MPIDR 44*877cf3ffSSoby Mathew b plat_arm_calc_core_pos 45*877cf3ffSSoby Mathewendfunc plat_my_core_pos 46*877cf3ffSSoby Mathew 47*877cf3ffSSoby Mathew /* ----------------------------------------------------- 48*877cf3ffSSoby Mathew * unsigned int plat_arm_calc_core_pos(uint64_t mpidr) 49*877cf3ffSSoby Mathew * Helper function to calculate the core position. 50*877cf3ffSSoby Mathew * With this function: CorePos = (ClusterId * 4) + 51*877cf3ffSSoby Mathew * CoreId 52*877cf3ffSSoby Mathew * ----------------------------------------------------- 53*877cf3ffSSoby Mathew */ 54*877cf3ffSSoby Mathewfunc plat_arm_calc_core_pos 55*877cf3ffSSoby Mathew and r1, r0, #MPIDR_CPU_MASK 56*877cf3ffSSoby Mathew and r0, r0, #MPIDR_CLUSTER_MASK 57*877cf3ffSSoby Mathew add r0, r1, r0, LSR #6 58*877cf3ffSSoby Mathew bx lr 59*877cf3ffSSoby Mathewendfunc plat_arm_calc_core_pos 60