aboutsummaryrefslogtreecommitdiff
path: root/lib/pmf/pmf_smc.c
diff options
context:
space:
mode:
Diffstat (limited to 'lib/pmf/pmf_smc.c')
-rw-r--r--lib/pmf/pmf_smc.c91
1 files changed, 91 insertions, 0 deletions
diff --git a/lib/pmf/pmf_smc.c b/lib/pmf/pmf_smc.c
new file mode 100644
index 0000000000..14190b774d
--- /dev/null
+++ b/lib/pmf/pmf_smc.c
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2016, 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.
+ */
+#include <assert.h>
+#include <debug.h>
+#include <platform.h>
+#include <pmf.h>
+#include <smcc_helpers.h>
+
+/*
+ * This function is responsible for handling all PMF SMC calls.
+ */
+uintptr_t pmf_smc_handler(unsigned int smc_fid,
+ u_register_t x1,
+ u_register_t x2,
+ u_register_t x3,
+ u_register_t x4,
+ void *cookie,
+ void *handle,
+ u_register_t flags)
+{
+ int rc;
+ unsigned long long ts_value;
+
+ if (((smc_fid >> FUNCID_CC_SHIFT) & FUNCID_CC_MASK) == SMC_32) {
+
+ x1 = (uint32_t)x1;
+ x2 = (uint32_t)x2;
+ x3 = (uint32_t)x3;
+
+ switch (smc_fid) {
+ case PMF_SMC_GET_TIMESTAMP_32:
+ /*
+ * Return error code and the captured
+ * time-stamp to the caller.
+ * x0 --> error code.
+ * x1 - x2 --> time-stamp value.
+ */
+ rc = pmf_get_timestamp_smc(x1, x2, x3, &ts_value);
+ SMC_RET3(handle, rc, (uint32_t)ts_value,
+ (uint32_t)(ts_value >> 32));
+
+ default:
+ break;
+ }
+ } else {
+ switch (smc_fid) {
+ case PMF_SMC_GET_TIMESTAMP_64:
+ /*
+ * Return error code and the captured
+ * time-stamp to the caller.
+ * x0 --> error code.
+ * x1 --> time-stamp value.
+ */
+ rc = pmf_get_timestamp_smc(x1, x2, x3, &ts_value);
+ SMC_RET2(handle, rc, ts_value);
+
+ default:
+ break;
+ }
+ }
+
+ WARN("Unimplemented PMF Call: 0x%x \n", smc_fid);
+ SMC_RET1(handle, SMC_UNK);
+}