84 lines
1.9 KiB
C
84 lines
1.9 KiB
C
/*
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* partition.c - devicetree partition parsing
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*
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* Copyright (c) 2012 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
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*
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* based on Linux devicetree support
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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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#include <common.h>
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#include <of.h>
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#include <malloc.h>
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#include <linux/mtd/mtd.h>
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#include <nand.h>
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struct cdev *of_parse_partition(struct cdev *cdev, struct device_node *node)
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{
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const char *partname;
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char *filename;
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struct cdev *new;
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const __be32 *reg;
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unsigned long offset, size;
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const char *name;
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int len;
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unsigned long flags = 0;
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if (!node)
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return NULL;
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reg = of_get_property(node, "reg", &len);
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if (!reg)
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return NULL;
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offset = be32_to_cpu(reg[0]);
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size = be32_to_cpu(reg[1]);
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partname = of_get_property(node, "label", &len);
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if (!partname)
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partname = of_get_property(node, "name", &len);
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if (!partname)
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return NULL;
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name = (char *)partname;
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debug("add partition: %s.%s 0x%08lx 0x%08lx\n", cdev->name, partname, offset, size);
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if (of_get_property(node, "read-only", &len))
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flags = DEVFS_PARTITION_READONLY;
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filename = asprintf("%s.%s", cdev->name, partname);
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new = devfs_add_partition(cdev->name, offset, size, flags, filename);
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if (new && new->dev)
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new->dev->device_node = node;
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free(filename);
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return new;
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}
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int of_parse_partitions(struct cdev *cdev, struct device_node *node)
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{
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struct device_node *n;
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if (!node)
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return -EINVAL;
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for_each_child_of_node(node, n) {
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of_parse_partition(cdev, n);
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}
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return 0;
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}
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