feat: H7 support (#5738)

Co-authored-by: Richard Li <richard.li@ces.hk>
Co-authored-by: philmoz <phil.a.mitchell@gmail.com>
Co-authored-by: raphaelcoeffic <1050031+raphaelcoeffic@users.noreply.github.com>

radio/src/hal/flash_driver.cpp

@@ -0,0 +1,48 @@
+#include "hal/flash_driver.h"
+
+typedef struct {
+  const etx_flash_driver_t* drv; 
+  uint32_t                  start_addr;
+  uint32_t                  end_addr;
+} flash_media_t;
+
+static flash_media_t _flash_media[2] = {{nullptr, 0, 0}};
+
+void flashRegisterDriver(uint32_t start_addr, uint32_t length,
+                         const etx_flash_driver_t* drv)
+{
+  for (int i = 0; i < 2; i++) {
+    flash_media_t& fm = _flash_media[i];
+    if (fm.drv) continue;
+    fm = {
+      .drv = drv,
+      .start_addr = start_addr,
+      .end_addr = start_addr + length - 1,
+    };
+    return;
+  }
+}
+
+const etx_flash_driver_t* flashFindDriver(uint32_t addr)
+{
+  for (int i = 0; i < 2; i++) {
+    const flash_media_t& fm = _flash_media[i];
+    if (!fm.drv) continue;
+    if (fm.start_addr <= addr && fm.end_addr >= addr)
+      return fm.drv;
+  }
+
+  return nullptr;
+}
+
+uint32_t flashGetSize(uint32_t addr)
+{
+  for (int i = 0; i < 2; i++) {
+    const flash_media_t& fm = _flash_media[i];
+    if (!fm.drv) continue;
+    if (fm.start_addr <= addr && fm.end_addr >= addr)
+      return fm.end_addr - fm.start_addr + 1;
+  }
+
+  return 0;
+}