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diff --git a/services/spd/tspd/tspd_main.c b/services/spd/tspd/tspd_main.c
new file mode 100644
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+++ b/services/spd/tspd/tspd_main.c
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+/*
+ * Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+/*******************************************************************************
+ * This is the Secure Payload Dispatcher (SPD). The dispatcher is meant to be a
+ * plug-in component to the Secure Monitor, registered as a runtime service. The
+ * SPD is expected to be a functional extension of the Secure Payload (SP) that
+ * executes in Secure EL1. The Secure Monitor will delegate all SMCs targeting
+ * the Trusted OS/Applications range to the dispatcher. The SPD will either
+ * handle the request locally or delegate it to the Secure Payload. It is also
+ * responsible for initialising and maintaining communication with the SP.
+ ******************************************************************************/
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+#include <arch_helpers.h>
+#include <console.h>
+#include <platform.h>
+#include <psci_private.h>
+#include <context_mgmt.h>
+#include <runtime_svc.h>
+#include <bl31.h>
+#include <tsp.h>
+#include <psci.h>
+#include <tspd_private.h>
+#include <debug.h>
+
+/*******************************************************************************
+ * Single structure to hold information about the various entry points into the
+ * Secure Payload. It is initialised once on the primary core after a cold boot.
+ ******************************************************************************/
+entry_info *tsp_entry_info;
+
+/*******************************************************************************
+ * Array to keep track of per-cpu Secure Payload state
+ ******************************************************************************/
+tsp_context tspd_sp_context[TSPD_CORE_COUNT];
+
+/*******************************************************************************
+ * Secure Payload Dispatcher setup. The SPD finds out the SP entrypoint and type
+ * (aarch32/aarch64) if not already known and initialises the context for entry
+ * into the SP for its initialisation.
+ ******************************************************************************/
+int32_t tspd_setup(void)
+{
+	el_change_info *image_info;
+	int32_t rc;
+	uint64_t mpidr = read_mpidr();
+	uint32_t linear_id;
+
+	linear_id = platform_get_core_pos(mpidr);
+
+	/*
+	 * Get information about the Secure Payload (BL32) image. Its
+	 * absence is a critical failure.  TODO: Add support to
+	 * conditionally include the SPD service
+	 */
+	image_info = bl31_get_next_image_info(SECURE);
+	assert(image_info);
+
+	/*
+	 * We could inspect the SP image and determine it's execution
+	 * state i.e whether AArch32 or AArch64. Assuming it's AArch64
+	 * for the time being.
+	 */
+	rc = tspd_init_secure_context(image_info->entrypoint,
+				     TSP_AARCH64,
+				     mpidr,
+				     &tspd_sp_context[linear_id]);
+	assert(rc == 0);
+
+	return rc;
+}
+
+/*******************************************************************************
+ * This function passes control to the Secure Payload image (BL32) for the first
+ * time on the primary cpu after a cold boot. It assumes that a valid secure
+ * context has already been created by tspd_setup() which can be directly used.
+ * It also assumes that a valid non-secure context has been initialised by PSCI
+ * so it does not need to save and restore any non-secure state. This function
+ * performs a synchronous entry into the Secure payload. The SP passes control
+ * back to this routine through a SMC. It also passes the extents of memory made
+ * available to BL32 by BL31.
+ ******************************************************************************/
+int32_t bl32_init(meminfo *bl32_meminfo)
+{
+	uint64_t mpidr = read_mpidr();
+	uint32_t linear_id = platform_get_core_pos(mpidr);
+	uint64_t rc;
+	tsp_context *tsp_ctx = &tspd_sp_context[linear_id];
+
+	/*
+	 * Arrange for passing a pointer to the meminfo structure
+	 * describing the memory extents available to the secure
+	 * payload.
+	 * TODO: We are passing a pointer to BL31 internal memory
+	 * whereas this structure should be copied to a communication
+	 * buffer between the SP and SPD.
+	 */
+	write_ctx_reg(get_gpregs_ctx(&tsp_ctx->cpu_ctx),
+		      CTX_GPREG_X0,
+		      (uint64_t) bl32_meminfo);
+
+	/* Arrange for an entry into the secure payload */
+	rc = tspd_synchronous_sp_entry(tsp_ctx);
+	assert(rc != 0);
+	if (rc)
+		tsp_ctx->state = TSP_STATE_ON;
+
+	return rc;
+}
+
+/*******************************************************************************
+ * This function is responsible for handling all SMCs in the Trusted OS/App
+ * range from the non-secure state as defined in the SMC Calling Convention
+ * Document. It is also responsible for communicating with the Secure payload
+ * to delegate work and return results back to the non-secure state. Lastly it
+ * will also return any information that the secure payload needs to do the
+ * work assigned to it.
+ ******************************************************************************/
+uint64_t tspd_smc_handler(uint32_t smc_fid,
+			 uint64_t x1,
+			 uint64_t x2,
+			 uint64_t x3,
+			 uint64_t x4,
+			 void *cookie,
+			 void *handle,
+			 uint64_t flags)
+{
+	unsigned long mpidr = read_mpidr();
+	uint32_t linear_id = platform_get_core_pos(mpidr), ns;
+
+	/* Determine which security state this SMC originated from */
+	ns = is_caller_non_secure(flags);
+
+	switch (smc_fid) {
+
+	/*
+	 * This function ID is used only by the SP to indicate it has
+	 * finished initialising itself after a cold boot
+	 */
+	case TSP_ENTRY_DONE:
+		if (ns)
+			SMC_RET1(handle, SMC_UNK);
+
+		/*
+		 * Stash the SP entry points information. This is done
+		 * only once on the primary cpu
+		 */
+		assert(tsp_entry_info == NULL);
+		tsp_entry_info = (entry_info *) x1;
+
+		/*
+		 * SP reports completion. The SPD must have initiated
+		 * the original request through a synchronous entry
+		 * into the SP. Jump back to the original C runtime
+		 * context.
+		 */
+		tspd_synchronous_sp_exit(&tspd_sp_context[linear_id], x1);
+
+		/* Should never reach here */
+		assert(0);
+
+	default:
+		panic();
+	}
+
+	SMC_RET1(handle, 0);
+}
+
+/* Define a SPD runtime service descriptor */
+DECLARE_RT_SVC(
+	spd,
+
+	OEN_TOS_START,
+	OEN_TOS_END,
+	SMC_TYPE_FAST,
+	tspd_setup,
+	tspd_smc_handler
+);