From 17c7b6c3fdc48301e50d22cc6138ede16bd1be24 Mon Sep 17 00:00:00 2001
From: nbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Thu, 6 Sep 2007 16:27:37 +0000
Subject: strip the kernel version suffix from target directories, except for
 brcm-2.4 (the -2.4 will be included in the board name here).
 CONFIG_LINUX_<ver>_<board> becomes CONFIG_TARGET_<board>, same for profiles.

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@8653 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
 target/linux/ar7/files/drivers/mtd/ar7part.c | 140 +++++++++++++++++++++++++++
 1 file changed, 140 insertions(+)
 create mode 100644 target/linux/ar7/files/drivers/mtd/ar7part.c

(limited to 'target/linux/ar7/files/drivers/mtd/ar7part.c')

diff --git a/target/linux/ar7/files/drivers/mtd/ar7part.c b/target/linux/ar7/files/drivers/mtd/ar7part.c
new file mode 100644
index 000000000..587bb31bb
--- /dev/null
+++ b/target/linux/ar7/files/drivers/mtd/ar7part.c
@@ -0,0 +1,140 @@
+/*
+ * $Id$
+ * 
+ * Copyright (C) 2007 OpenWrt.org
+ * 
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * 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.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * TI AR7 flash partition table.
+ * Based on ar7 map by Felix Fietkau.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/bootmem.h>
+#include <linux/squashfs_fs.h>
+
+struct ar7_bin_rec {
+	unsigned int checksum;
+	unsigned int length;
+	unsigned int address;
+};
+
+static struct mtd_partition ar7_parts[5];
+
+static int create_mtd_partitions(struct mtd_info *master, 
+				 struct mtd_partition **pparts, 
+				 unsigned long origin)
+{
+	struct ar7_bin_rec header;
+	unsigned int offset, len;
+	unsigned int pre_size = master->erasesize, post_size = 0,
+		root_offset = 0xe0000;
+	int retries = 10;
+
+	printk("Parsing AR7 partition map...\n");
+
+	ar7_parts[0].name = "loader";
+	ar7_parts[0].offset = 0;
+	ar7_parts[0].size = master->erasesize;
+	ar7_parts[0].mask_flags = MTD_WRITEABLE;
+
+	ar7_parts[1].name = "config";
+	ar7_parts[1].offset = 0;
+	ar7_parts[1].size = master->erasesize;
+	ar7_parts[1].mask_flags = 0;
+
+	do {
+		offset = pre_size;
+		master->read(master, offset, sizeof(header), &len, (u_char *)&header);
+		if (!strncmp((char *)&header, "TIENV0.8", 8))
+			ar7_parts[1].offset = pre_size;
+		if (header.checksum == 0xfeedfa42)
+			break;
+		if (header.checksum == 0xfeed1281)
+			break;
+		pre_size += master->erasesize;
+	} while (retries--);
+
+	pre_size = offset;
+
+	if (!ar7_parts[1].offset) {
+		ar7_parts[1].offset = master->size - master->erasesize;
+		post_size = master->erasesize;
+	}
+
+	switch (header.checksum) {
+	case 0xfeedfa42:
+		while (header.length) {
+			offset += sizeof(header) + header.length;
+			master->read(master, offset, sizeof(header),
+				     &len, (u_char *)&header); 
+		}
+		root_offset = offset + sizeof(header) + 4;
+		break;
+	case 0xfeed1281:
+		while (header.length) {
+			offset += sizeof(header) + header.length;
+			master->read(master, offset, sizeof(header),
+				     &len, (u_char *)&header); 
+		}
+		root_offset = offset + sizeof(header) + 4 + 0xff;
+		root_offset &= ~(u32)0xff;
+		break;
+	default:
+		printk("Unknown magic: %08x\n", header.checksum);
+		break;
+	}
+
+	master->read(master, root_offset, sizeof(header), &len, (u_char *)&header);
+	if (header.checksum != SQUASHFS_MAGIC) {
+		root_offset += master->erasesize - 1;
+		root_offset &= ~(master->erasesize - 1);
+	}
+
+	ar7_parts[2].name = "linux";
+	ar7_parts[2].offset = pre_size;
+	ar7_parts[2].size = master->size - pre_size - post_size;
+	ar7_parts[2].mask_flags = 0;
+
+	ar7_parts[3].name = "rootfs";
+	ar7_parts[3].offset = root_offset;
+	ar7_parts[3].size = master->size - root_offset - post_size;
+	ar7_parts[3].mask_flags = 0;
+
+	*pparts = ar7_parts;
+	return 4;
+}
+
+static struct mtd_part_parser ar7_parser = {
+	.owner = THIS_MODULE,
+	.parse_fn = create_mtd_partitions,
+	.name = "ar7part",
+};
+
+static int __init ar7_parser_init(void)
+{
+	return register_mtd_parser(&ar7_parser);
+}
+
+module_init(ar7_parser_init);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Felix Fietkau, Eugene Konev");
+MODULE_DESCRIPTION("MTD partitioning for TI AR7");
-- 
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