1 /* 2 * Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are met: 6 * 7 * Redistributions of source code must retain the above copyright notice, this 8 * list of conditions and the following disclaimer. 9 * 10 * Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 14 * Neither the name of ARM nor the names of its contributors may be used 15 * to endorse or promote products derived from this software without specific 16 * prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include <arch.h> 32 #include <asm_macros.S> 33 #include <platform_def.h> 34 35 36 .weak platform_get_core_pos 37 .weak platform_check_mpidr 38 .weak plat_report_exception 39 .weak plat_crash_console_init 40 .weak plat_crash_console_putc 41 .weak plat_reset_handler 42 .weak plat_disable_acp 43 44 /* ----------------------------------------------------- 45 * int platform_get_core_pos(int mpidr); 46 * With this function: CorePos = (ClusterId * 4) + 47 * CoreId 48 * ----------------------------------------------------- 49 */ 50 func platform_get_core_pos 51 and x1, x0, #MPIDR_CPU_MASK 52 and x0, x0, #MPIDR_CLUSTER_MASK 53 add x0, x1, x0, LSR #6 54 ret 55 56 /* ----------------------------------------------------- 57 * Placeholder function which should be redefined by 58 * each platform. 59 * ----------------------------------------------------- 60 */ 61 func platform_check_mpidr 62 mov x0, xzr 63 ret 64 65 /* ----------------------------------------------------- 66 * Placeholder function which should be redefined by 67 * each platform. 68 * ----------------------------------------------------- 69 */ 70 func plat_report_exception 71 ret 72 73 /* ----------------------------------------------------- 74 * Placeholder function which should be redefined by 75 * each platform. 76 * ----------------------------------------------------- 77 */ 78 func plat_crash_console_init 79 mov x0, #0 80 ret 81 82 /* ----------------------------------------------------- 83 * Placeholder function which should be redefined by 84 * each platform. 85 * ----------------------------------------------------- 86 */ 87 func plat_crash_console_putc 88 ret 89 90 /* ----------------------------------------------------- 91 * Placeholder function which should be redefined by 92 * each platform. This function should preserve x10. 93 * ----------------------------------------------------- 94 */ 95 func plat_reset_handler 96 ret 97 98 /* ----------------------------------------------------- 99 * Placeholder function which should be redefined by 100 * each platform. This function is allowed to use 101 * registers x0 - x17. 102 * ----------------------------------------------------- 103 */ 104 func plat_disable_acp 105 ret 106
