Add support for SMCCC_VERSION in PSCI features
On some platforms it may be necessary to discover the SMCCC version
via a PSCI features call.
Change-Id: I95281ac2263ca9aefda1809eb03464fbdb8ac24d
Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>
diff --git a/lib/psci/psci_main.c b/lib/psci/psci_main.c
index 8e41cf0..88cf5cb 100644
--- a/lib/psci/psci_main.c
+++ b/lib/psci/psci_main.c
@@ -1,11 +1,12 @@
/*
- * Copyright (c) 2013-2017, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <arch.h>
#include <arch_helpers.h>
+#include <arm_arch_svc.h>
#include <assert.h>
#include <debug.h>
#include <platform.h>
@@ -322,6 +323,9 @@
{
unsigned int local_caps = psci_caps;
+ if (psci_fid == SMCCC_VERSION)
+ return PSCI_E_SUCCESS;
+
/* Check if it is a 64 bit function */
if (((psci_fid >> FUNCID_CC_SHIFT) & FUNCID_CC_MASK) == SMC_64)
local_caps &= PSCI_CAP_64BIT_MASK;