| /* |
| * Copyright (c) 2015-2020, ARM Limited and Contributors. All rights reserved. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| #include <asm_macros.S> |
| #include <platform_def.h> |
| |
| .weak plat_arm_calc_core_pos |
| .weak plat_my_core_pos |
| .globl plat_crash_console_init |
| .globl plat_crash_console_putc |
| .globl plat_crash_console_flush |
| .globl platform_mem_init |
| |
| |
| /* ----------------------------------------------------- |
| * unsigned int plat_my_core_pos(void) |
| * This function uses the plat_arm_calc_core_pos() |
| * definition to get the index of the calling CPU. |
| * ----------------------------------------------------- |
| */ |
| func plat_my_core_pos |
| mrs x0, mpidr_el1 |
| b plat_arm_calc_core_pos |
| endfunc plat_my_core_pos |
| |
| /* ----------------------------------------------------- |
| * unsigned int plat_arm_calc_core_pos(u_register_t mpidr) |
| * Helper function to calculate the core position. |
| * With this function: CorePos = (ClusterId * 4) + |
| * CoreId |
| * ----------------------------------------------------- |
| */ |
| func plat_arm_calc_core_pos |
| and x1, x0, #MPIDR_CPU_MASK |
| and x0, x0, #MPIDR_CLUSTER_MASK |
| add x0, x1, x0, LSR #6 |
| ret |
| endfunc plat_arm_calc_core_pos |
| |
| /* --------------------------------------------- |
| * int plat_crash_console_init(void) |
| * Function to initialize the crash console |
| * without a C Runtime to print crash report. |
| * Clobber list : x0 - x4 |
| * --------------------------------------------- |
| */ |
| func plat_crash_console_init |
| mov_imm x0, PLAT_ARM_CRASH_UART_BASE |
| mov_imm x1, PLAT_ARM_CRASH_UART_CLK_IN_HZ |
| mov_imm x2, ARM_CONSOLE_BAUDRATE |
| b console_pl011_core_init |
| endfunc plat_crash_console_init |
| |
| /* --------------------------------------------- |
| * int plat_crash_console_putc(int c) |
| * Function to print a character on the crash |
| * console without a C Runtime. |
| * Clobber list : x1, x2 |
| * --------------------------------------------- |
| */ |
| func plat_crash_console_putc |
| mov_imm x1, PLAT_ARM_CRASH_UART_BASE |
| b console_pl011_core_putc |
| endfunc plat_crash_console_putc |
| |
| /* --------------------------------------------- |
| * void plat_crash_console_flush() |
| * Function to force a write of all buffered |
| * data that hasn't been output. |
| * Out : void. |
| * Clobber list : r0 |
| * --------------------------------------------- |
| */ |
| func plat_crash_console_flush |
| mov_imm x0, PLAT_ARM_CRASH_UART_BASE |
| b console_pl011_core_flush |
| endfunc plat_crash_console_flush |
| |
| /* --------------------------------------------------------------------- |
| * We don't need to carry out any memory initialization on ARM |
| * platforms. The Secure RAM is accessible straight away. |
| * --------------------------------------------------------------------- |
| */ |
| func platform_mem_init |
| ret |
| endfunc platform_mem_init |