Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

/*

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

 */

#ifndef FLATDEVTREE_H

#define FLATDEVTREE_H

#include "flatdevtree_env.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_reserve {

        u64 start;

        u64 len;

};

struct ft_region {

        char *start;

        unsigned long size;

};

enum ft_rgn_id {

        FT_RSVMAP,

        FT_STRUCT,

        FT_STRINGS,

        FT_N_REGION

};

#define FT_MAX_DEPTH    50

struct ft_cxt {

        struct boot_param_header *bph;

        int max_size;           /* maximum size of tree */

        int isordered;          /* everything in standard order */

        void *(*realloc)(void *, unsigned long);

        char *str_anchor;

        char *p;                /* current insertion point in structs */

        struct ft_region rgn[FT_N_REGION];

        void *genealogy[FT_MAX_DEPTH+1];

        char **node_tbl;

        unsigned int node_max;

        unsigned int nodes_used;

};

char *ft_begin_node(struct ft_cxt *cxt, const char *name);

void ft_end_node(struct ft_cxt *cxt);

void ft_begin_tree(struct ft_cxt *cxt);

void ft_end_tree(struct ft_cxt *cxt);

void ft_nop(struct ft_cxt *cxt);

int ft_prop(struct ft_cxt *cxt, const char *name,

            const void *data, unsigned int sz);

int ft_prop_str(struct ft_cxt *cxt, const char *name, const char *str);

int ft_prop_int(struct ft_cxt *cxt, const char *name, unsigned int val);

void ft_begin(struct ft_cxt *cxt, void *blob, unsigned int max_size,

              void *(*realloc_fn)(void *, unsigned long));

int ft_open(struct ft_cxt *cxt, void *blob, unsigned int max_size,

                unsigned int max_find_device,

                void *(*realloc_fn)(void *, unsigned long));

int ft_add_rsvmap(struct ft_cxt *cxt, u64 physaddr, u64 size);

void ft_dump_blob(const void *bphp);

void ft_merge_blob(struct ft_cxt *cxt, void *blob);

void *ft_find_device(struct ft_cxt *cxt, const void *top,

                     const char *srch_path);

void *ft_find_descendent(struct ft_cxt *cxt, void *top, const char *srch_path);

int ft_get_prop(struct ft_cxt *cxt, const void *phandle, const char *propname,

                void *buf, const unsigned int buflen);

int ft_set_prop(struct ft_cxt *cxt, const void *phandle, const char *propname,

                const void *buf, const unsigned int buflen);

void *ft_get_parent(struct ft_cxt *cxt, const void *phandle);

void *ft_find_node_by_prop_value(struct ft_cxt *cxt, const void *prev,

                                 const char *propname, const char *propval,

                                 int proplen);

void *ft_create_node(struct ft_cxt *cxt, const void *parent, const char *name);

char *ft_get_path(struct ft_cxt *cxt, const void *phandle, char *buf, int len);

#endif /* FLATDEVTREE_H */