14f6ad66aSAchin Gupta/* 2e83b0cadSDan Handley * Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved. 34f6ad66aSAchin Gupta * 44f6ad66aSAchin Gupta * Redistribution and use in source and binary forms, with or without 54f6ad66aSAchin Gupta * modification, are permitted provided that the following conditions are met: 64f6ad66aSAchin Gupta * 74f6ad66aSAchin Gupta * Redistributions of source code must retain the above copyright notice, this 84f6ad66aSAchin Gupta * list of conditions and the following disclaimer. 94f6ad66aSAchin Gupta * 104f6ad66aSAchin Gupta * Redistributions in binary form must reproduce the above copyright notice, 114f6ad66aSAchin Gupta * this list of conditions and the following disclaimer in the documentation 124f6ad66aSAchin Gupta * and/or other materials provided with the distribution. 134f6ad66aSAchin Gupta * 144f6ad66aSAchin Gupta * Neither the name of ARM nor the names of its contributors may be used 154f6ad66aSAchin Gupta * to endorse or promote products derived from this software without specific 164f6ad66aSAchin Gupta * prior written permission. 174f6ad66aSAchin Gupta * 184f6ad66aSAchin Gupta * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 194f6ad66aSAchin Gupta * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 204f6ad66aSAchin Gupta * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 214f6ad66aSAchin Gupta * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 224f6ad66aSAchin Gupta * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 234f6ad66aSAchin Gupta * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 244f6ad66aSAchin Gupta * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 254f6ad66aSAchin Gupta * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 264f6ad66aSAchin Gupta * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 274f6ad66aSAchin Gupta * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 284f6ad66aSAchin Gupta * POSSIBILITY OF SUCH DAMAGE. 294f6ad66aSAchin Gupta */ 304f6ad66aSAchin Gupta 314f6ad66aSAchin Gupta#include <arch.h> 320a30cf54SAndrew Thoelke#include <asm_macros.S> 33*5f0cdb05SDan Handley#include <platform_def.h> 344f6ad66aSAchin Gupta 354f6ad66aSAchin Gupta 364f6ad66aSAchin Gupta .weak platform_get_core_pos 374f6ad66aSAchin Gupta .weak platform_is_primary_cpu 384f6ad66aSAchin Gupta .weak platform_check_mpidr 394f6ad66aSAchin Gupta .weak plat_report_exception 404f6ad66aSAchin Gupta 414f6ad66aSAchin Gupta /* ----------------------------------------------------- 424f6ad66aSAchin Gupta * int platform_get_core_pos(int mpidr); 434f6ad66aSAchin Gupta * With this function: CorePos = (ClusterId * 4) + 444f6ad66aSAchin Gupta * CoreId 454f6ad66aSAchin Gupta * ----------------------------------------------------- 464f6ad66aSAchin Gupta */ 470a30cf54SAndrew Thoelkefunc platform_get_core_pos 484f6ad66aSAchin Gupta and x1, x0, #MPIDR_CPU_MASK 494f6ad66aSAchin Gupta and x0, x0, #MPIDR_CLUSTER_MASK 504f6ad66aSAchin Gupta add x0, x1, x0, LSR #6 514f6ad66aSAchin Gupta ret 524f6ad66aSAchin Gupta 534f6ad66aSAchin Gupta /* ----------------------------------------------------- 544f6ad66aSAchin Gupta * void platform_is_primary_cpu (unsigned int mpid); 554f6ad66aSAchin Gupta * 564f6ad66aSAchin Gupta * Given the mpidr say whether this cpu is the primary 574f6ad66aSAchin Gupta * cpu (applicable ony after a cold boot) 584f6ad66aSAchin Gupta * ----------------------------------------------------- 594f6ad66aSAchin Gupta */ 600a30cf54SAndrew Thoelkefunc platform_is_primary_cpu 614f6ad66aSAchin Gupta and x0, x0, #(MPIDR_CLUSTER_MASK | MPIDR_CPU_MASK) 624f6ad66aSAchin Gupta cmp x0, #PRIMARY_CPU 634f6ad66aSAchin Gupta cset x0, eq 644f6ad66aSAchin Gupta ret 654f6ad66aSAchin Gupta 664f6ad66aSAchin Gupta /* ----------------------------------------------------- 674f6ad66aSAchin Gupta * Placeholder function which should be redefined by 684f6ad66aSAchin Gupta * each platform. 694f6ad66aSAchin Gupta * ----------------------------------------------------- 704f6ad66aSAchin Gupta */ 710a30cf54SAndrew Thoelkefunc platform_check_mpidr 724f6ad66aSAchin Gupta mov x0, xzr 734f6ad66aSAchin Gupta ret 744f6ad66aSAchin Gupta 754f6ad66aSAchin Gupta /* ----------------------------------------------------- 764f6ad66aSAchin Gupta * Placeholder function which should be redefined by 774f6ad66aSAchin Gupta * each platform. 784f6ad66aSAchin Gupta * ----------------------------------------------------- 794f6ad66aSAchin Gupta */ 800a30cf54SAndrew Thoelkefunc plat_report_exception 814f6ad66aSAchin Gupta ret 82