1/* 2 * Copyright (c) 2015, 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#include <asm_macros.S> 31#include <platform_def.h> 32 33 .weak plat_arm_calc_core_pos 34 .weak plat_my_core_pos 35 .globl plat_crash_console_init 36 .globl plat_crash_console_putc 37 38 39 /* ----------------------------------------------------- 40 * unsigned int plat_my_core_pos(void) 41 * This function uses the plat_arm_calc_core_pos() 42 * definition to get the index of the calling CPU. 43 * ----------------------------------------------------- 44 */ 45func plat_my_core_pos 46 mrs x0, mpidr_el1 47 b plat_arm_calc_core_pos 48endfunc plat_my_core_pos 49 50 /* ----------------------------------------------------- 51 * unsigned int plat_arm_calc_core_pos(uint64_t mpidr) 52 * Helper function to calculate the core position. 53 * With this function: CorePos = (ClusterId * 4) + 54 * CoreId 55 * ----------------------------------------------------- 56 */ 57func plat_arm_calc_core_pos 58 and x1, x0, #MPIDR_CPU_MASK 59 and x0, x0, #MPIDR_CLUSTER_MASK 60 add x0, x1, x0, LSR #6 61 ret 62endfunc plat_arm_calc_core_pos 63 64 /* --------------------------------------------- 65 * int plat_crash_console_init(void) 66 * Function to initialize the crash console 67 * without a C Runtime to print crash report. 68 * Clobber list : x0, x1, x2 69 * --------------------------------------------- 70 */ 71func plat_crash_console_init 72 mov_imm x0, PLAT_ARM_CRASH_UART_BASE 73 mov_imm x1, PLAT_ARM_CRASH_UART_CLK_IN_HZ 74 mov_imm x2, ARM_CONSOLE_BAUDRATE 75 b console_core_init 76endfunc plat_crash_console_init 77 78 /* --------------------------------------------- 79 * int plat_crash_console_putc(int c) 80 * Function to print a character on the crash 81 * console without a C Runtime. 82 * Clobber list : x1, x2 83 * --------------------------------------------- 84 */ 85func plat_crash_console_putc 86 mov_imm x1, PLAT_ARM_CRASH_UART_BASE 87 b console_core_putc 88endfunc plat_crash_console_putc 89