feat(psa): interface with RSS for NV counters
Adding AP/RSS interface for retrieving and incrementing non-volatile
counters.
The read interface implements the psa_call:
psa_call(RSS_PLATFORM_SERVICE_HANDLE,
RSS_PLATFORM_API_ID_NV_READ,
in_vec, 1, out_vec, 1);
where the in_vec indicates which of the 3 counters we want, and the
out_vec stores the counter value we get back from RSS.
The increment interface implements the psa_call:
psa_call(RSS_PLATFORM_SERVICE_HANDLE,
RSS_PLATFORM_API_ID_NV_INCREMENT,
in_vec, 1, (psa_outvec *)NULL, 0);
where, again, in_vec indicates the counter to increment, and we don't
get any output parameter from RSS.
Through this service, we will be able to get/increment any of the 3 NV
counters used on a CCA platform:
- NV counter for CCA firmware (BL2, BL31, RMM).
- NV counter for secure firmware.
- NV counter for non-secure firmware.
Signed-off-by: Lauren Wehrmeister <lauren.wehrmeister@arm.com>
Signed-off-by: Raef Coles <raef.coles@arm.com>
Change-Id: I4c1c7f4837ebff30de16bb0ce7ecd416b70b1f62
diff --git a/include/lib/psa/psa_manifest/sid.h b/include/lib/psa/psa_manifest/sid.h
index 0bdeed4..be78bae 100644
--- a/include/lib/psa/psa_manifest/sid.h
+++ b/include/lib/psa/psa_manifest/sid.h
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2019-2022, Arm Limited. All rights reserved.
+ * Copyright (c) 2019-2023, Arm Limited. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*
@@ -8,6 +8,9 @@
#ifndef PSA_MANIFEST_SID_H
#define PSA_MANIFEST_SID_H
+/******** RSS_SP_PLATFORM ********/
+#define RSS_PLATFORM_SERVICE_HANDLE (0x40000105U)
+
/******** PSA_SP_MEASURED_BOOT ********/
#define RSS_MEASURED_BOOT_HANDLE (0x40000110U)