u-boot/include/ft_build.h

/*
 * OF Flat tree builder
 *
 */

#ifndef FT_BUILD_H
#define FT_BUILD_H

#include <linux/types.h>
#include <asm/u-boot.h>

/* Definitions used by the flattened device tree */
#define OF_DT_HEADER		0xd00dfeed	/* marker */
#define OF_DT_BEGIN_NODE	0x1	/* Start of node, full name */
#define OF_DT_END_NODE		0x2	/* End node */
#define OF_DT_PROP		0x3	/* Property: name off, size,
					 * content */
#define OF_DT_NOP		0x4	/* nop */
#define OF_DT_END		0x9

#define OF_DT_VERSION		0x10

struct boot_param_header {
	u32 magic;		/* magic word OF_DT_HEADER */
	u32 totalsize;		/* total size of DT block */
	u32 off_dt_struct;	/* offset to structure */
	u32 off_dt_strings;	/* offset to strings */
	u32 off_mem_rsvmap;	/* offset to memory reserve map */
	u32 version;		/* format version */
	u32 last_comp_version;	/* last compatible version */
	/* version 2 fields below */
	u32 boot_cpuid_phys;	/* Physical CPU id we're booting on */
	/* version 3 fields below */
	u32 dt_strings_size;	/* size of the DT strings block */
};

struct ft_cxt {
	struct boot_param_header *bph;
	u8 *p_rsvmap;
	u8 *p_start;  /* pointer to beginning of dt_struct */
	u8 *p_end; /* pointer to end of dt_strings */
	u8 *p; /* pointer to end of dt_struct and beginning of dt_strings */
};

void ft_begin_node(struct ft_cxt *cxt, const char *name);
void ft_init_cxt(struct ft_cxt *cxt, void *blob);
void ft_end_node(struct ft_cxt *cxt);

void ft_end_tree(struct ft_cxt *cxt);
void ft_finalize_tree(struct ft_cxt *cxt);

void ft_nop(struct ft_cxt *cxt);
void ft_prop(struct ft_cxt *cxt, const char *name, const void *data, int sz);
void ft_prop_str(struct ft_cxt *cxt, const char *name, const char *str);
void ft_prop_int(struct ft_cxt *cxt, const char *name, int val);
void ft_begin(struct ft_cxt *cxt, void *blob, int max_size);
void ft_add_rsvmap(struct ft_cxt *cxt, u64 physaddr, u64 size);

void ft_setup(void *blob, bd_t * bd, ulong initrd_start, ulong initrd_end);

void ft_dump_blob(const void *bphp);
void ft_merge_blob(struct ft_cxt *cxt, void *blob);
void *ft_get_prop(void *bphp, const char *propname, int *szp);

#ifdef CONFIG_OF_BOARD_SETUP
void ft_board_setup(void *blob, bd_t *bd);
void ft_cpu_setup(void *blob, bd_t *bd);
void ft_pci_setup(void *blob, bd_t *bd);
#endif

#endif