hw2 done

include/dtb.h

@@ -0,0 +1,52 @@
+#pragma once
+
+#include <stddef.h>
+#include <vector.h>
+
+typedef struct {
+  uint32_t magic;
+  uint32_t totalsize;
+  uint32_t off_dt_struct;
+  uint32_t off_dt_strings;
+  uint32_t off_mem_rsvmap;
+  uint32_t version;
+  uint32_t last_comp_version;
+  uint32_t boot_cpuid_phys;
+  uint32_t size_dt_strings;
+  uint32_t size_dt_struct;
+}__attribute__((packed)) fdt_header_t;
+
+typedef struct {
+  uint64_t address;
+  uint64_t size;
+}__attribute__((packed)) fdt_reserve_entry_t;
+
+typedef struct {
+  uint32_t len;
+  uint32_t nameoff;
+}__attribute__((packed)) fdt_prop_header_t;
+
+typedef struct {
+  uint32_t len;
+  const char *name;
+  void *value;
+} fdt_prop_t;
+
+#define FDT_BEGIN_NODE 0x00000001
+#define FDT_END_NODE   0x00000002
+#define FDT_PROP       0x00000003
+#define FDT_NOP        0x00000004
+#define FDT_END        0x00000009
+
+#define FDT_PATH_BUFFER_LEN 0x10
+
+typedef void (*fdt_callback_func_t)(const vector_t *props);
+typedef struct {
+  const char *name;
+  const fdt_callback_func_t func;
+} fdt_callback_t;
+
+void fdt_callback(const char *path, const vector_t *cbs, const vector_t *props);
+void fdt_traverse(const vector_t *cbs);
+
+extern void *dtb_addr;