diff options
| author | Dimitris Papastamos <dimitris.papastamos@arm.com> | 2018-01-22 12:58:52 +0000 |
|---|---|---|
| committer | Dimitris Papastamos <dimitris.papastamos@arm.com> | 2018-01-29 09:58:57 +0000 |
| commit | 6eabbb07d7ee2aac3a8e8e734649c8eaa8385af6 (patch) | |
| tree | f9909f23ff70224e2de6f234b387e3b5ba3bf957 /lib | |
| parent | 3a1b0676c72989d75276da7f11e89d00933eccdd (diff) | |
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>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/psci/psci_main.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/lib/psci/psci_main.c b/lib/psci/psci_main.c index 8e41cf02..88cf5cbe 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 @@ int psci_features(unsigned int psci_fid) { 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; |