drivers: generic_delay_timer: Assert presence of Generic Timer
The Generic Timer is an optional extension to an ARMv7-A implementation.
The generic delay timer can be used from any architecture supported by
the Trusted Firmware. In ARMv7 it is needed to check that this feature
is present. In ARMv8 it is always present.
Change-Id: Ib7e8ec13ffbb2f64445d4ee48ed00f26e34b79b7
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
diff --git a/drivers/delay_timer/generic_delay_timer.c b/drivers/delay_timer/generic_delay_timer.c
index 4b67ed0..3d0a11f 100644
--- a/drivers/delay_timer/generic_delay_timer.c
+++ b/drivers/delay_timer/generic_delay_timer.c
@@ -1,11 +1,12 @@
/*
- * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2016-2019, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <assert.h>
+#include <arch_features.h>
#include <arch_helpers.h>
#include <common/bl_common.h>
#include <common/debug.h>
@@ -43,6 +44,8 @@
void generic_delay_timer_init(void)
{
+ assert(is_armv7_gentimer_present());
+
/* Value in ticks */
unsigned int mult = MHZ_TICKS_PER_SEC;