linux/arch/powerpc/boot/flatdevtree_misc.c
Mark A. Greer 6fb4efc68f [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: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-10-23 12:49:18 +10:00

56 lines
1.4 KiB
C

/*
* This file does the necessary interface mapping between the bootwrapper
* device tree operations and the interface provided by shared source
* files flatdevicetree.[ch].
*
* Author: Mark A. Greer <mgreer@mvista.com>
*
* 2006 (c) MontaVista Software, Inc. This file is licensed under
* the terms of the GNU General Public License version 2. This program
* is licensed "as is" without any warranty of any kind, whether express
* or implied.
*/
#include <stddef.h>
#include "flatdevtree.h"
#include "ops.h"
static struct ft_cxt cxt;
static void *ft_finddevice(const char *name)
{
return ft_find_device(&cxt, name);
}
static int ft_getprop(const void *phandle, const char *propname, void *buf,
const int buflen)
{
return ft_get_prop(&cxt, phandle, propname, buf, buflen);
}
static int ft_setprop(const void *phandle, const char *propname,
const void *buf, const int buflen)
{
return ft_set_prop(&cxt, phandle, propname, buf, buflen);
}
static void ft_pack(void)
{
ft_end_tree(&cxt);
}
static unsigned long ft_addr(void)
{
return (unsigned long)cxt.bph;
}
int ft_init(void *dt_blob, unsigned int max_size, unsigned int max_find_device)
{
dt_ops.finddevice = ft_finddevice;
dt_ops.getprop = ft_getprop;
dt_ops.setprop = ft_setprop;
dt_ops.ft_pack = ft_pack;
dt_ops.ft_addr = ft_addr;
return ft_open(&cxt, dt_blob, max_size, max_find_device,
platform_ops.realloc);
}