Initial commit

Initial commit.

bootloader/mcuboot/boot/zephyr/include/io/io.h

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+/*
+ * Copyright (c) 2012-2014 Wind River Systems, Inc.
+ * Copyright (c) 2020 Arm Limited
+ * Copyright (c) 2021-2023 Nordic Semiconductor ASA
+ *
+ * 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_IO_
+#define H_IO_
+
+#include <stddef.h>
+
+#ifdef CONFIG_SOC_FAMILY_NORDIC_NRF
+#include <helpers/nrfx_reset_reason.h>
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Initialises the configured LED.
+ */
+void io_led_init(void);
+
+/*
+ * Sets value of the configured LED.
+ */
+void io_led_set(int value);
+
+/*
+ * Checks if GPIO is set in the required way to remain in serial recovery mode
+ *
+ * @retval	false for normal boot, true for serial recovery boot
+ */
+bool io_detect_pin(void);
+
+/*
+ * Checks if board was reset using reset pin and if device should stay in
+ * serial recovery mode
+ *
+ * @retval	false for normal boot, true for serial recovery boot
+ */
+bool io_detect_pin_reset(void);
+
+/*
+ * Checks board boot mode via retention subsystem and if device should stay in
+ * serial recovery mode
+ *
+ * @retval	false for normal boot, true for serial recovery boot
+ */
+bool io_detect_boot_mode(void);
+
+#ifdef CONFIG_SOC_FAMILY_NORDIC_NRF
+static inline bool io_boot_skip_serial_recovery()
+{
+    uint32_t rr = nrfx_reset_reason_get();
+
+    return !(rr == 0 || (rr & NRFX_RESET_REASON_RESETPIN_MASK));
+}
+#else
+static inline bool io_boot_skip_serial_recovery()
+{
+    return false;
+}
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif