Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 6fb4efc6 authored by Mark A. Greer's avatar Mark A. Greer Committed by Paul Mackerras
Browse files

[POWERPC] Add flatdevtree source 



Add the latest version of the flatdevtree code and corresponding glue.

A phandle table now tracks values returned by ft_find_device().
The value returned by ft_find_device() is a phandle which is really
an index into the phandle table.  The phandle table contains the address
of the corresponding node.  When the flat dt is edited/moved, the node
pointers in the phandle table are updated accordingly so no phandles kept
by the caller become stale.

Signed-off-by: default avatarMark A. Greer <mgreer@mvista.com>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent c888554b

arch/powerpc/boot/Makefile

+2 −1
Original line number Diff line number Diff line
@@ -40,7 +40,8 @@ zliblinuxheader := zlib.h zconf.h zutil.h 
$(addprefix $(obj)/,$(zlib) main.o): $(addprefix $(obj)/,$(zliblinuxheader)) \

		$(addprefix $(obj)/,$(zlibheader))



src-wlib := string.S stdio.c main.c div64.S $(zlib)

src-wlib := string.S stdio.c main.c flatdevtree.c flatdevtree_misc.c div64.S \

		$(zlib)

src-plat := of.c

src-boot := crt0.S $(src-wlib) $(src-plat) empty.c

arch/powerpc/boot/flatdevtree.c

0 → 100644
+880 −0

File added.

Preview size limit exceeded, changes collapsed.

arch/powerpc/boot/flatdevtree.h

+61 −1
Original line number Diff line number Diff line
@@ -17,7 +17,7 @@ 
#ifndef FLATDEVTREE_H

#define FLATDEVTREE_H



#include "types.h"

#include "flatdevtree_env.h"



/* Definitions used by the flattened device tree */

#define OF_DT_HEADER            0xd00dfeed      /* marker */
@@ -43,4 +43,64 @@ struct boot_param_header { 
	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;

};



int 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 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);



#endif /* FLATDEVTREE_H */

arch/powerpc/boot/flatdevtree_env.h

0 → 100644
+47 −0

File added.

Preview size limit exceeded, changes collapsed.

arch/powerpc/boot/flatdevtree_misc.c

0 → 100644
+56 −0

File added.

Preview size limit exceeded, changes collapsed.