Flush `psci_plat_pm_ops` after initialization
The `psci_plat_pm_ops` global pointer is initialized during cold boot by the
primary CPU and will be accessed by the secondary CPUs before enabling data
cache during warm boot. This patch adds a missing data cache flush of
`psci_plat_psci_ops` after initialization during psci_setup() so that
secondaries can see the updated `psci_plat_psci_ops` pointer.
Fixes ARM-software/tf-issues#424
Change-Id: Id4554800b5646302b944115a33be69507d53cedb
diff --git a/lib/psci/psci_setup.c b/lib/psci/psci_setup.c
index 20d0635..aa2ed51 100644
--- a/lib/psci/psci_setup.c
+++ b/lib/psci/psci_setup.c
@@ -238,6 +238,13 @@
plat_setup_psci_ops(mailbox_ep, &psci_plat_pm_ops);
assert(psci_plat_pm_ops);
+ /*
+ * Flush `psci_plat_pm_ops` as it will be accessed by secondary CPUs
+ * during warm boot before data cache is enabled.
+ */
+ flush_dcache_range((uintptr_t)&psci_plat_pm_ops,
+ sizeof(psci_plat_pm_ops));
+
/* Initialize the psci capability */
psci_caps = PSCI_GENERIC_CAP;