feat(hikey960): add a FF-A logical partition

Required to compile with SPMC_AT_EL3=1
Copied from FVP, sample code for platforms

Change-Id: I7d8a4d8846a328b05cf45a5044802ea3e2f7fb67
Signed-off-by: Lukas Hanel <lukas.hanel@trustonic.com>

diff --git a/plat/hisilicon/hikey960/hikey960_el3_spmc_logical_sp.c b/plat/hisilicon/hikey960/hikey960_el3_spmc_logical_sp.c
new file mode 100644 (file)
index 0000000..b9e4f86
--- /dev/null
+++ b/plat/hisilicon/hikey960/hikey960_el3_spmc_logical_sp.c
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2022, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <common/debug.h>
+#include <services/el3_spmc_logical_sp.h>
+#include <services/ffa_svc.h>
+#include <smccc_helpers.h>
+
+#define LP_PARTITION_ID 0xC001
+#define LP_UUID {0x47a3bf57, 0xe98e43ad, 0xb7db524f, 0x1588f4e3}
+
+/* Our Logical SP currently only supports receipt of direct messaging. */
+#define PARTITION_PROPERTIES FFA_PARTITION_DIRECT_REQ_RECV
+
+static int32_t sp_init(void)
+{
+       INFO("LSP: Init function called.\n");
+       return 0;
+}
+
+static uint64_t handle_ffa_direct_request(uint32_t smc_fid,  bool secure_origin,
+                                         uint64_t x1, uint64_t x2, uint64_t x3,
+                                         uint64_t x4, void *cookie,
+                                         void *handle, uint64_t flags)
+{
+       uint64_t ret;
+
+       /* Determine if we have a 64 or 32 direct request. */
+       if (smc_fid == FFA_MSG_SEND_DIRECT_REQ_SMC32) {
+               ret = FFA_MSG_SEND_DIRECT_RESP_SMC32;
+       } else if (smc_fid == FFA_MSG_SEND_DIRECT_REQ_SMC64) {
+               ret = FFA_MSG_SEND_DIRECT_RESP_SMC64;
+       } else {
+               panic(); /* Unknown SMC. */
+       }
+       /*
+        * Handle the incoming request. For testing purposes we echo the
+        * incoming message.
+        */
+       INFO("Logical Partition: Received Direct Request from %s world!\n",
+            secure_origin ? "Secure" : "Normal");
+
+       /*
+        * Logical SP's must always send a direct response so we can populate
+        * our response directly.
+        */
+       SMC_RET8(handle, ret, 0, 0, x4, 0, 0, 0, 0);
+}
+
+/* Register logical partition  */
+DECLARE_LOGICAL_PARTITION(
+       my_logical_partition,
+       sp_init,                        /* Init Function */
+       LP_PARTITION_ID,                /* FF-A Partition ID */
+       LP_UUID,                        /* UUID */
+       PARTITION_PROPERTIES,           /* Partition Properties. */
+       handle_ffa_direct_request       /* Callback for direct requests. */
+);