1b4315306SDan Handley/* 2b4315306SDan Handley * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved. 3b4315306SDan Handley * 4b4315306SDan Handley * Redistribution and use in source and binary forms, with or without 5b4315306SDan Handley * modification, are permitted provided that the following conditions are met: 6b4315306SDan Handley * 7b4315306SDan Handley * Redistributions of source code must retain the above copyright notice, this 8b4315306SDan Handley * list of conditions and the following disclaimer. 9b4315306SDan Handley * 10b4315306SDan Handley * Redistributions in binary form must reproduce the above copyright notice, 11b4315306SDan Handley * this list of conditions and the following disclaimer in the documentation 12b4315306SDan Handley * and/or other materials provided with the distribution. 13b4315306SDan Handley * 14b4315306SDan Handley * Neither the name of ARM nor the names of its contributors may be used 15b4315306SDan Handley * to endorse or promote products derived from this software without specific 16b4315306SDan Handley * prior written permission. 17b4315306SDan Handley * 18b4315306SDan Handley * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 19b4315306SDan Handley * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20b4315306SDan Handley * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21b4315306SDan Handley * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 22b4315306SDan Handley * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23b4315306SDan Handley * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24b4315306SDan Handley * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25b4315306SDan Handley * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26b4315306SDan Handley * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27b4315306SDan Handley * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28b4315306SDan Handley * POSSIBILITY OF SUCH DAMAGE. 29b4315306SDan Handley */ 30b4315306SDan Handley#include <asm_macros.S> 31b4315306SDan Handley#include <platform_def.h> 32b4315306SDan Handley 33*38dce70fSSoby Mathew .weak plat_arm_calc_core_pos 34*38dce70fSSoby Mathew .weak plat_my_core_pos 35b4315306SDan Handley .globl plat_crash_console_init 36b4315306SDan Handley .globl plat_crash_console_putc 37b4315306SDan Handley 38b4315306SDan Handley 39*38dce70fSSoby Mathew /* ----------------------------------------------------- 40*38dce70fSSoby Mathew * unsigned int plat_my_core_pos(void) 41*38dce70fSSoby Mathew * This function uses the plat_arm_calc_core_pos() 42*38dce70fSSoby Mathew * definition to get the index of the calling CPU. 43*38dce70fSSoby Mathew * ----------------------------------------------------- 44*38dce70fSSoby Mathew */ 45*38dce70fSSoby Mathewfunc plat_my_core_pos 46*38dce70fSSoby Mathew mrs x0, mpidr_el1 47*38dce70fSSoby Mathew b plat_arm_calc_core_pos 48*38dce70fSSoby Mathewendfunc plat_my_core_pos 49*38dce70fSSoby Mathew 50*38dce70fSSoby Mathew /* ----------------------------------------------------- 51*38dce70fSSoby Mathew * unsigned int plat_arm_calc_core_pos(uint64_t mpidr) 52*38dce70fSSoby Mathew * Helper function to calculate the core position. 53*38dce70fSSoby Mathew * With this function: CorePos = (ClusterId * 4) + 54*38dce70fSSoby Mathew * CoreId 55*38dce70fSSoby Mathew * ----------------------------------------------------- 56*38dce70fSSoby Mathew */ 57*38dce70fSSoby Mathewfunc plat_arm_calc_core_pos 58*38dce70fSSoby Mathew and x1, x0, #MPIDR_CPU_MASK 59*38dce70fSSoby Mathew and x0, x0, #MPIDR_CLUSTER_MASK 60*38dce70fSSoby Mathew add x0, x1, x0, LSR #6 61*38dce70fSSoby Mathew ret 62*38dce70fSSoby Mathewendfunc plat_arm_calc_core_pos 63*38dce70fSSoby Mathew 64b4315306SDan Handley /* --------------------------------------------- 65b4315306SDan Handley * int plat_crash_console_init(void) 66b4315306SDan Handley * Function to initialize the crash console 67b4315306SDan Handley * without a C Runtime to print crash report. 68b4315306SDan Handley * Clobber list : x0, x1, x2 69b4315306SDan Handley * --------------------------------------------- 70b4315306SDan Handley */ 71b4315306SDan Handleyfunc plat_crash_console_init 72b4315306SDan Handley mov_imm x0, PLAT_ARM_CRASH_UART_BASE 73b4315306SDan Handley mov_imm x1, PLAT_ARM_CRASH_UART_CLK_IN_HZ 74b4315306SDan Handley mov_imm x2, ARM_CONSOLE_BAUDRATE 75b4315306SDan Handley b console_core_init 76b4315306SDan Handleyendfunc plat_crash_console_init 77b4315306SDan Handley 78b4315306SDan Handley /* --------------------------------------------- 79b4315306SDan Handley * int plat_crash_console_putc(int c) 80b4315306SDan Handley * Function to print a character on the crash 81b4315306SDan Handley * console without a C Runtime. 82b4315306SDan Handley * Clobber list : x1, x2 83b4315306SDan Handley * --------------------------------------------- 84b4315306SDan Handley */ 85b4315306SDan Handleyfunc plat_crash_console_putc 86b4315306SDan Handley mov_imm x1, PLAT_ARM_CRASH_UART_BASE 87b4315306SDan Handley b console_core_putc 88b4315306SDan Handleyendfunc plat_crash_console_putc 89