feat(spmc): add FF-A secure partition manager core
This patch introduces the core support for enabling an SPMC in EL3
as per the FF-A spec.
The current implemented functionality is targeted to enable
initialization of the SPMC itself and initial support for
bringing up a single S-EL1 SP.
This includes initialization of the SPMC's internal state,
parsing of an SP's manifest, preparing the cpu contexts and
appropriate system registers for the Secure Partition.
The spmc_smc_handler is the main handler for all incoming SMCs
to the SPMC, FF-A ABI handlers and functionality will
be implemented in subsequent patches.
Signed-off-by: Marc Bonnici <marc.bonnici@arm.com>
Change-Id: Ib33c240b91e54cbd018a69fec880d02adfbe12b9
diff --git a/include/services/ffa_svc.h b/include/services/ffa_svc.h
index 9a7c489..ff1e04a 100644
--- a/include/services/ffa_svc.h
+++ b/include/services/ffa_svc.h
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2020-2021, Arm Limited. All rights reserved.
+ * Copyright (c) 2020-2022, Arm Limited. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -7,6 +7,8 @@
#ifndef FFA_SVC_H
#define FFA_SVC_H
+#include <stdbool.h>
+
#include <lib/smccc.h>
#include <lib/utils_def.h>
#include <tools_share/uuid.h>
@@ -176,6 +178,15 @@
#define FFA_ENDPOINT_ID_MAX U(1 << 16)
/*
+ * Reserve endpoint id for the SPMD.
+ */
+#define SPMD_DIRECT_MSG_ENDPOINT_ID U(FFA_ENDPOINT_ID_MAX - 1)
+
+/* Mask and shift to check valid secure FF-A Endpoint ID. */
+#define SPMC_SECURE_ID_MASK U(1)
+#define SPMC_SECURE_ID_SHIFT U(15)
+
+/*
* Mask for source and destination endpoint id in
* a direct message request/response.
*/
@@ -209,4 +220,24 @@
FFA_DIRECT_MSG_ENDPOINT_ID_MASK;
}
+/******************************************************************************
+ * FF-A helper functions to determine partition ID world.
+ *****************************************************************************/
+
+/*
+ * Determine if provided ID is in the secure world.
+ */
+static inline bool ffa_is_secure_world_id(uint16_t id)
+{
+ return ((id >> SPMC_SECURE_ID_SHIFT) & SPMC_SECURE_ID_MASK) == 1;
+}
+
+/*
+ * Determine if provided ID is in the normal world.
+ */
+static inline bool ffa_is_normal_world_id(uint16_t id)
+{
+ return !ffa_is_secure_world_id(id);
+}
+
#endif /* FFA_SVC_H */