Make common_arm to hardware abstraction layer.

common_arm/flash_code/flash_code_apis.h

@@ -0,0 +1,42 @@
+//
+// Created by dxl on 2026/5/25.
+//
+
+#ifndef FLASH_CODE_APIS_H
+#define FLASH_CODE_APIS_H
+
+#include "common.h"
+
+
+/**
+ * Write code flash minimum unit. The implementation of this function is very specific to different platforms.
+ * The minimum flash rewriting unit varies from platform to platform,
+ * so the data length must strictly comply with the length returned by FlashCodeGetEWMinUnit.
+ *
+ * @param flash_address The flash address to write to. Must be aligned to 4 bytes.
+ * @param data The data to write. u32 only.
+ * @param flash_start The flash start address of firmware code.
+ * @param status The pointer to store the platform specific status code of flash erase/write.
+ * @return Whether the operation is successful. If it fails, you can refer to the status.
+ */
+bool FlashCodeEWriteMinUnit(uint32_t flash_address, const uint32_t *data, uint32_t *flash_start, uint32_t *status);
+
+/**
+ * Minimum unit for Flash erase/write.
+ * @return Minimum number of bytes per erase/write.
+ */
+STATIC_FORCE_INLINE uint16_t FlashCodeGetEWMinUnit(void);
+
+/**
+ * Initialize the FLASH that stores firmware/code.
+ * Configure the clock speed of FLASH, for example.
+ */
+STATIC_FORCE_INLINE void FlashCodeInit(void);
+
+#ifdef PM5
+#include "flash_code_hw_at32.h"
+#else
+#include "flash_code_hw_at91.h"
+#endif
+
+#endif //FLASH_CODE_APIS_H