105 lines
2.2 KiB
C
105 lines
2.2 KiB
C
/*
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* barebox.c
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*
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* Copyright (c) 2013 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <common.h>
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#include <init.h>
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#include <io.h>
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#include <of.h>
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#include <malloc.h>
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#include <partition.h>
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#include <envfs.h>
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#include <linux/mtd/mtd.h>
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struct of_partition {
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struct list_head list;
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char *nodepath;
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struct device_d *dev;
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struct device_node *of_partitions;
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};
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static LIST_HEAD(of_partition_list);
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static int environment_probe(struct device_d *dev)
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{
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char *path;
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int ret;
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ret = of_find_path(dev->device_node, "device-path", &path);
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if (ret)
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return ret;
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/*
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* The environment support is not bad block aware, hence we
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* have to use the .bb device. Test if we have a nand device
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* and if yes, append .bb to the filename.
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*/
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if (!strncmp(path, "/dev/", 5)) {
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struct cdev *cdev;
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char *cdevname;
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cdevname = path + 5;
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cdev = cdev_by_name(cdevname);
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if (cdev && cdev->mtd && mtd_can_have_bb(cdev->mtd)) {
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char *bbpath = asprintf("%s.bb", path);
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free(path);
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path = bbpath;
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}
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}
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dev_info(dev, "setting default environment path to %s\n", path);
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default_environment_path_set(path);
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return 0;
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}
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static struct of_device_id environment_dt_ids[] = {
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{
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.compatible = "barebox,environment",
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}, {
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/* sentinel */
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}
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};
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static struct driver_d environment_driver = {
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.name = "barebox-environment",
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.probe = environment_probe,
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.of_compatible = environment_dt_ids,
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};
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static int barebox_of_driver_init(void)
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{
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struct device_node *node;
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node = of_get_root_node();
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if (!node)
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return 0;
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node = of_find_node_by_path("/chosen");
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if (!node)
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return 0;
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of_platform_populate(node, of_default_bus_match_table, NULL);
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platform_driver_register(&environment_driver);
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return 0;
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}
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late_initcall(barebox_of_driver_init);
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