ARMv8 Trusted Firmware release v0.2
diff --git a/common/psci/psci_main.c b/common/psci/psci_main.c
new file mode 100644
index 0000000..eca2dec
--- /dev/null
+++ b/common/psci/psci_main.c
@@ -0,0 +1,190 @@
+/*
+ * Copyright (c) 2013, ARM Limited. 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.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+#include <arch_helpers.h>
+#include <console.h>
+#include <platform.h>
+#include <psci_private.h>
+
+/*******************************************************************************
+ * PSCI frontend api for servicing SMCs. Described in the PSCI spec.
+ ******************************************************************************/
+int psci_cpu_on(unsigned long target_cpu,
+ unsigned long entrypoint,
+ unsigned long context_id)
+
+{
+ int rc;
+ unsigned int start_afflvl, target_afflvl;
+
+ /* Determine if the cpu exists of not */
+ rc = psci_validate_mpidr(target_cpu, MPIDR_AFFLVL0);
+ if (rc != PSCI_E_SUCCESS) {
+ goto exit;
+ }
+
+ start_afflvl = get_max_afflvl();
+ target_afflvl = MPIDR_AFFLVL0;
+ rc = psci_afflvl_on(target_cpu,
+ entrypoint,
+ context_id,
+ start_afflvl,
+ target_afflvl);
+
+exit:
+ return rc;
+}
+
+unsigned int psci_version(void)
+{
+ return PSCI_MAJOR_VER | PSCI_MINOR_VER;
+}
+
+int psci_cpu_suspend(unsigned int power_state,
+ unsigned long entrypoint,
+ unsigned long context_id)
+{
+ int rc;
+ unsigned long mpidr;
+ unsigned int tgt_afflvl, pstate_type;
+
+ /* TODO: Standby states are not supported at the moment */
+ pstate_type = psci_get_pstate_type(power_state);
+ if (pstate_type == 0) {
+ rc = PSCI_E_INVALID_PARAMS;
+ goto exit;
+ }
+
+ /* Sanity check the requested state */
+ tgt_afflvl = psci_get_pstate_afflvl(power_state);
+ if (tgt_afflvl > MPIDR_MAX_AFFLVL) {
+ rc = PSCI_E_INVALID_PARAMS;
+ goto exit;
+ }
+
+ mpidr = read_mpidr();
+ rc = psci_afflvl_suspend(mpidr,
+ entrypoint,
+ context_id,
+ power_state,
+ tgt_afflvl,
+ MPIDR_AFFLVL0);
+
+exit:
+ if (rc != PSCI_E_SUCCESS)
+ assert(rc == PSCI_E_INVALID_PARAMS);
+ return rc;
+}
+
+int psci_cpu_off(void)
+{
+ int rc;
+ unsigned long mpidr;
+ int target_afflvl = get_max_afflvl();
+
+ mpidr = read_mpidr();
+
+ /*
+ * Traverse from the highest to the lowest affinity level. When the
+ * lowest affinity level is hit, all the locks are acquired. State
+ * management is done immediately followed by cpu, cluster ...
+ * ..target_afflvl specific actions as this function unwinds back.
+ */
+ rc = psci_afflvl_off(mpidr, target_afflvl, MPIDR_AFFLVL0);
+
+ if (rc != PSCI_E_SUCCESS) {
+ assert(rc == PSCI_E_DENIED);
+ }
+
+ return rc;
+}
+
+int psci_affinity_info(unsigned long target_affinity,
+ unsigned int lowest_affinity_level)
+{
+ int rc = PSCI_E_INVALID_PARAMS;
+ unsigned int aff_state;
+ aff_map_node *node;
+
+ if (lowest_affinity_level > get_max_afflvl()) {
+ goto exit;
+ }
+
+ node = psci_get_aff_map_node(target_affinity, lowest_affinity_level);
+ if (node && (node->state & PSCI_AFF_PRESENT)) {
+ aff_state = psci_get_state(node->state);
+
+ /* A suspended cpu is available & on for the OS */
+ if (aff_state == PSCI_STATE_SUSPEND) {
+ aff_state = PSCI_STATE_ON;
+ }
+
+ rc = aff_state;
+ }
+exit:
+ return rc;
+}
+
+/* Unimplemented */
+int psci_migrate(unsigned int target_cpu)
+{
+ return PSCI_E_NOT_SUPPORTED;
+}
+
+/* Unimplemented */
+unsigned int psci_migrate_info_type(void)
+{
+ return PSCI_TOS_NOT_PRESENT;
+}
+
+unsigned long psci_migrate_info_up_cpu(void)
+{
+ /*
+ * Return value of this currently unsupported call depends upon
+ * what psci_migrate_info_type() returns.
+ */
+ return PSCI_E_SUCCESS;
+}
+
+/* Unimplemented */
+void psci_system_off(void)
+{
+ assert(0);
+}
+
+/* Unimplemented */
+void psci_system_reset(void)
+{
+ assert(0);
+}
+