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/*
* barebox.c
*
* Copyright (c) 2013 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* 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.
*
*/
#include <common.h>
#include <init.h>
#include <io.h>
#include <of.h>
#include <malloc.h>
#include <partition.h>
#include <envfs.h>
#include <linux/mtd/mtd.h>
struct of_partition {
struct list_head list;
char *nodepath;
struct device_d *dev;
struct device_node *of_partitions;
};
static LIST_HEAD(of_partition_list);
static int environment_probe(struct device_d *dev)
{
char *path;
int ret;
ret = of_find_path(dev->device_node, "device-path", &path);
if (ret)
return ret;
/*
* The environment support is not bad block aware, hence we
* have to use the .bb device. Test if we have a nand device
* and if yes, append .bb to the filename.
*/
if (!strncmp(path, "/dev/", 5)) {
struct cdev *cdev;
char *cdevname;
cdevname = path + 5;
cdev = cdev_by_name(cdevname);
if (cdev && cdev->mtd && mtd_can_have_bb(cdev->mtd)) {
char *bbpath = asprintf("%s.bb", path);
free(path);
path = bbpath;
}
}
dev_info(dev, "setting default environment path to %s\n", path);
default_environment_path_set(path);
return 0;
}
static struct of_device_id environment_dt_ids[] = {
{
.compatible = "barebox,environment",
}, {
/* sentinel */
}
};
static struct driver_d environment_driver = {
.name = "barebox-environment",
.probe = environment_probe,
.of_compatible = environment_dt_ids,
};
static int barebox_of_driver_init(void)
{
struct device_node *node;
node = of_get_root_node();
if (!node)
return 0;
node = of_find_node_by_path("/chosen");
if (!node)
return 0;
of_platform_populate(node, of_default_bus_match_table, NULL);
platform_driver_register(&environment_driver);
return 0;
}
late_initcall(barebox_of_driver_init);
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