fix(msm8916): flush dcache after writing msm8916_entry_point
msm8916_entry_point is read with caches off (and even from two
different physical addresses when read through the "boot remapper"),
so it should be flushed to RAM after writing it.
Change-Id: I5c8193954bb28043b0a46fb2038f629bd8796c74
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
diff --git a/plat/qti/msm8916/msm8916_pm.c b/plat/qti/msm8916/msm8916_pm.c
index 6891e38..792a096 100644
--- a/plat/qti/msm8916/msm8916_pm.c
+++ b/plat/qti/msm8916/msm8916_pm.c
@@ -1,10 +1,11 @@
/*
- * Copyright (c) 2021, Stephan Gerhold <stephan@gerhold.net>
+ * Copyright (c) 2021-2022, Stephan Gerhold <stephan@gerhold.net>
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <arch.h>
+#include <arch_helpers.h>
#include <common/debug.h>
#include <drivers/arm/gicv2.h>
#include <drivers/delay_timer.h>
@@ -53,7 +54,14 @@
int plat_setup_psci_ops(uintptr_t sec_entrypoint,
const plat_psci_ops_t **psci_ops)
{
+ /*
+ * The entry point is read with caches off (and even from two different
+ * physical addresses when read through the "boot remapper"), so make
+ * sure it is flushed to memory.
+ */
msm8916_entry_point = sec_entrypoint;
+ flush_dcache_range((uintptr_t)&msm8916_entry_point, sizeof(uintptr_t));
+
*psci_ops = &msm8916_psci_ops;
return 0;
}