arm-trusted-firmware/lib/extensions/trf/aarch32/trf.c
Boyan Karatotev 60d330dc4d refactor(cpufeat): separate the EL2 and EL3 enablement code
Combining the EL2 and EL3 enablement code necessitates that it must be
called at el3_exit, which is the only place with enough context to make
the decision of what needs to be set.
Decouple them to allow them to be called from elsewhere.

Signed-off-by: Boyan Karatotev <boyan.karatotev@arm.com>
Change-Id: I147764c42771e7d4100699ec8fae98dac0a505c0
2023-07-04 14:57:46 +01:00

24 lines
405 B
C

/*
* Copyright (c) 2021-2023, Arm Limited. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <stdbool.h>
#include <arch.h>
#include <arch_helpers.h>
#include <lib/extensions/trf.h>
void trf_init_el3(void)
{
uint32_t val;
/*
* Allow access of trace filter control registers from
* non-monitor mode
*/
val = read_sdcr();
val &= ~SDCR_TTRF_BIT;
write_sdcr(val);
}