create wdt device discovery

discuss: per wrv32em status, consider moving custom wdt format to dtb or
pci device discovery (potentially both: we have the framework for pci.ko
extension after using dtb to discover memory and pci devices)

1 files changed, 18 insertions, 0 deletions

diff --git a/include/wdt.h b/include/wdt.h
new file mode 100644
index 0000000..31739ab
--- /dev/null
+++ b/include/wdt.h
@@ -0,0 +1,18 @@
+#pragma once
+#include <types.h>
+
+#define WDT_MAGIC 0x67674141
+
+struct wdt_device {
+    uint32_t type;
+    uint32_t driver_id;
+    uint32_t start;
+    uint32_t size;
+};
+
+struct wdt_root {
+    uint32_t magic;
+    uint32_t count;
+    struct wdt_device devices[];
+};
+