zephyr: Bring in the Zephyr build
Add support for building mcuboot as a Zephyr application. This is
copied from the iotboot repo with some minor reorganization to work with
the mcuboot directory layout.
diff --git a/zephyr/include/hal/hal_bsp.h b/zephyr/include/hal/hal_bsp.h
new file mode 100644
index 0000000..8b52f27
--- /dev/null
+++ b/zephyr/include/hal/hal_bsp.h
@@ -0,0 +1,79 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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 __HAL_BSP_H_
+#define __HAL_BSP_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <inttypes.h>
+
+/*
+ * Initializes BSP; registers flash_map with the system.
+ */
+void hal_bsp_init(void);
+
+/*
+ * Return pointer to flash device structure, given BSP specific
+ * flash id.
+ */
+struct hal_flash;
+const struct hal_flash *hal_bsp_flash_dev(uint8_t flash_id);
+
+/*
+ * Grows heap by given amount. XXX giving space back not implemented.
+ */
+void *_sbrk(int incr);
+
+/*
+ * Report which memory areas should be included inside a coredump.
+ */
+struct hal_bsp_mem_dump {
+ void *hbmd_start;
+ uint32_t hbmd_size;
+};
+
+const struct hal_bsp_mem_dump *hal_bsp_core_dump(int *area_cnt);
+
+/*
+ * Get unique HW identifier/serial number for platform.
+ * Returns the number of bytes filled in.
+ */
+#define HAL_BSP_MAX_ID_LEN 32
+int hal_bsp_hw_id(uint8_t *id, int max_len);
+
+#define HAL_BSP_POWER_ON (1)
+#define HAL_BSP_POWER_WFI (2)
+#define HAL_BSP_POWER_SLEEP (3)
+#define HAL_BSP_POWER_DEEP_SLEEP (4)
+#define HAL_BSP_POWER_OFF (5)
+#define HAL_BSP_POWER_PERUSER (128)
+
+int hal_bsp_power_state(int state);
+
+/* Returns priority of given interrupt number */
+uint32_t hal_bsp_get_nvic_priority(int irq_num, uint32_t pri);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif