1/* 2 * Copyright (c) 2016, 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_crash_console_init 35 .weak plat_crash_console_putc 36 .weak plat_my_core_pos 37 38 /* ----------------------------------------------------- 39 * unsigned int plat_my_core_pos(void) 40 * This function uses the plat_arm_calc_core_pos() 41 * definition to get the index of the calling CPU. 42 * ----------------------------------------------------- 43 */ 44func plat_my_core_pos 45 ldcopr r0, MPIDR 46 b plat_arm_calc_core_pos 47endfunc plat_my_core_pos 48 49 /* ----------------------------------------------------- 50 * unsigned int plat_arm_calc_core_pos(uint64_t mpidr) 51 * Helper function to calculate the core position. 52 * With this function: CorePos = (ClusterId * 4) + 53 * CoreId 54 * ----------------------------------------------------- 55 */ 56func plat_arm_calc_core_pos 57 and r1, r0, #MPIDR_CPU_MASK 58 and r0, r0, #MPIDR_CLUSTER_MASK 59 add r0, r1, r0, LSR #6 60 bx lr 61endfunc plat_arm_calc_core_pos 62 63 /* --------------------------------------------- 64 * int plat_crash_console_init(void) 65 * Function to initialize the crash console 66 * without a C Runtime to print crash report. 67 * Clobber list : r0 - r3 68 * --------------------------------------------- 69 */ 70func plat_crash_console_init 71 ldr r0, =PLAT_ARM_CRASH_UART_BASE 72 ldr r1, =PLAT_ARM_CRASH_UART_CLK_IN_HZ 73 ldr r2, =ARM_CONSOLE_BAUDRATE 74 b console_core_init 75endfunc plat_crash_console_init 76 77 /* --------------------------------------------- 78 * int plat_crash_console_putc(int c) 79 * Function to print a character on the crash 80 * console without a C Runtime. 81 * Clobber list : r1 - r2 82 * --------------------------------------------- 83 */ 84func plat_crash_console_putc 85 ldr r1, =PLAT_ARM_CRASH_UART_BASE 86 b console_core_putc 87endfunc plat_crash_console_putc 88