zephyr: Add simple benchmark support to Zephyr
This adds a Kconfig feature CONFIG_BOOT_USE_BENCH, which when enabled
will print the simple benchmarking output as log messages.
Signed-off-by: David Brown <david.brown@linaro.org>
diff --git a/boot/zephyr/include/platform-bench.h b/boot/zephyr/include/platform-bench.h
new file mode 100644
index 0000000..ed74612
--- /dev/null
+++ b/boot/zephyr/include/platform-bench.h
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2019 Linaro Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef H_ZEPHYR_BENCH_H__
+#define H_ZEPHYR_BENCH_H__
+
+#include <inttypes.h>
+#include <stdint.h>
+#include "zephyr.h"
+#include "bootutil/bootutil_log.h"
+
+/* TODO: Unclear if this can be here (redundantly). */
+MCUBOOT_LOG_MODULE_DECLARE(mcuboot);
+
+typedef uint32_t bench_state_t;
+
+#define plat_bench_start(_s) do { \
+ BOOT_LOG_ERR("start benchmark"); \
+ *(_s) = k_cycle_get_32(); \
+} while (0)
+
+#define plat_bench_stop(_s) do { \
+ uint32_t _stop_time = k_cycle_get_32(); \
+ BOOT_LOG_ERR("bench: %" PRId32 " cycles", _stop_time - *(_s)); \
+} while (0)
+
+#endif /* not H_ZEPHYR_BENCH_H__ */