1 files changed, 104 insertions, 0 deletions
diff --git a/source/hal/source/hal.c b/source/hal/source/hal.c
new file mode 100644
index 0000000..2715a17
--- /dev/null
+++ b/source/hal/source/hal.c
@@ -0,0 +1,104 @@
+/*
+ * Copyright (c) 2022 Arm Limited. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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.
+ */
+#include "hal.h"                /* API */
+
+#include "platform_drivers.h"   /* Platform drivers */
+#include "log_macros.h"         /* Logging macros */
+
+#include <stdio.h>
+#include <assert.h>
+#include <string.h>
+
+int hal_init(hal_platform* platform, data_acq_module* data_acq,
+    data_psn_module* data_psn, platform_timer* timer)
+{
+    assert(platform && data_acq && data_psn);
+
+    platform->data_acq  = data_acq;
+    platform->data_psn  = data_psn;
+    platform->timer     = timer;
+    platform->platform_init     = platform_init;
+    platform->platform_release  = platform_release;
+    platform_name(platform->plat_name, sizeof(platform->plat_name));
+
+    return 0;
+}
+
+/**
+ * @brief  Local helper function to clean the slate for current platform.
+ **/
+static void hal_platform_clear(hal_platform* platform)
+{
+    assert(platform);
+    platform->inited = 0;
+}
+
+int hal_platform_init(hal_platform* platform)
+{
+    int state;
+    assert(platform && platform->platform_init);
+    hal_platform_clear(platform);
+
+    /* Initialise platform */
+    if (0 != (state = platform->platform_init())) {
+        printf_err("Failed to initialise platform %s\n", platform->plat_name);
+        return state;
+    }
+
+    /* Initialise the data acquisition module */
+    if (0 != (state = data_acq_channel_init(platform->data_acq))) {
+        if (!platform->data_acq->inited) {
+            printf_err("Failed to initialise data acq module: %s\n",
+                platform->data_acq->system_name);
+        }
+        hal_platform_release(platform);
+        return state;
+    }
+
+    /* Initialise the presentation module */
+    if (0 != (state = data_psn_system_init(platform->data_psn))) {
+        printf_err("Failed to initialise data psn module: %s\n",
+            platform->data_psn->system_name);
+        data_acq_channel_release(platform->data_acq);
+        hal_platform_release(platform);
+        return state;
+    }
+
+    /* Followed by the timer module */
+    init_timer(platform->timer);
+
+    info("%s platform initialised\n", platform->plat_name);
+    debug("Using %s module for data acquisition\n",
+            platform->data_acq->system_name);
+    debug("Using %s module for data presentation\n",
+        platform->data_psn->system_name);
+
+    platform->inited = !state;
+
+    return state;
+}
+
+void hal_platform_release(hal_platform *platform)
+{
+    assert(platform && platform->platform_release);
+    data_acq_channel_release(platform->data_acq);
+    data_psn_system_release(platform->data_psn);
+
+    hal_platform_clear(platform);
+    info("Releasing platform %s\n", platform->plat_name);
+    platform->platform_release();
+}