1 /* 2 * Copyright (c) 2021, Arm Limited. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #include <stdbool.h> 8 9 #include <arch.h> 10 #include <arch_helpers.h> 11 #include <lib/extensions/trf.h> 12 13 void trf_enable(void) 14 { 15 uint32_t val; 16 17 /* 18 * Allow access of trace filter control registers from 19 * non-monitor mode 20 */ 21 val = read_sdcr(); 22 val &= ~SDCR_TTRF_BIT; 23 write_sdcr(val); 24 } 25