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#include <stdint.h>
#include <endian.h>
#include <printf.h>
#ifndef _FDT_H
#define _FDT_H
#define FDT_HEADER_MAGIC 0xd00dfeed
static inline uint32_t
fdt_uint32(uint32_t x)
{
#if BYTE_ORDER == LITTLE_ENDIAN
return __bswap32(x);
#else
return x;
#endif
}
struct fdt_header {
uint32_t magic; /* FDT_HEADER_MAGIC */
uint32_t totalsize; /* size of the whole device tree, in bytes */
uint32_t off_dt_struct; /* offset to structure block */
uint32_t off_dt_strings; /* offset to strings block */
uint32_t off_mem_rsvmap; /* offset to memory reservation block */
uint32_t version; /* dt spec version */
uint32_t last_comp_version; /* last compatible version. spec says this needs to be 16 */
uint32_t boot_cpuid_phys; /* physical id of the systems boot cpu */
uint32_t size_dt_strings; /* size of strings block */
uint32_t size_dt_struct; /* size of structure block */
};
struct fdt_reserve_entry {
uint64_t address;
uint64_t size;
};
struct fdt_node_header {
uint32_t tag;
char name[];
};
void walk_fdt(struct fdt_header *header);
#define FDT_MAGIC 0xd00dfeed /* 4: version, 4: total size */
#define FDT_TAGSIZE sizeof(fdt32_t)
#define FDT_BEGIN_NODE 0x1 /* Start node: full name */
#define FDT_END_NODE 0x2 /* End node */
#define FDT_PROP 0x3 /* Property: name off,
size, content */
#define FDT_NOP 0x4 /* nop */
#define FDT_END 0x9
#endif /* _FDT_H */
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