branch Attitude Adjustment

git-svn-id: svn://svn.openwrt.org/openwrt/branches/attitude_adjustment@33625 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 205 insertions, 0 deletions

diff --git a/target/linux/ar71xx/files/drivers/mtd/wrt160nl_part.c b/target/linux/ar71xx/files/drivers/mtd/wrt160nl_part.c
new file mode 100644
index 000000000..72927f6f2
--- /dev/null
+++ b/target/linux/ar71xx/files/drivers/mtd/wrt160nl_part.c
@@ -0,0 +1,205 @@
+/*
+ * Copyright (C) 2009 Christian Daniel <cd@maintech.de>
+ * Copyright (C) 2009 Gabor Juhos <juhosg@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
+ *
+ * TRX flash partition table.
+ * Based on ar7 map by Felix Fietkau <nbd@openwrt.org>
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+
+struct cybertan_header {
+	char	magic[4];
+	u8	res1[4];
+	char	fw_date[3];
+	char	fw_ver[3];
+	char	id[4];
+	char	hw_ver;
+	char	unused;
+	u8	flags[2];
+	u8	res2[10];
+};
+
+#define TRX_PARTS	6
+#define TRX_MAGIC	0x30524448
+#define TRX_MAX_OFFSET	3
+
+struct trx_header {
+	uint32_t magic;           /* "HDR0" */
+	uint32_t len;             /* Length of file including header */
+	uint32_t crc32;           /* 32-bit CRC from flag_version to end of file */
+	uint32_t flag_version;    /* 0:15 flags, 16:31 version */
+	uint32_t offsets[TRX_MAX_OFFSET]; /* Offsets of partitions from start of header */
+};
+
+#define IH_MAGIC	0x27051956	/* Image Magic Number */
+#define IH_NMLEN	32		/* Image Name Length */
+
+struct uimage_header {
+	uint32_t	ih_magic;	/* Image Header Magic Number */
+	uint32_t	ih_hcrc;	/* Image Header CRC Checksum */
+	uint32_t	ih_time;	/* Image Creation Timestamp */
+	uint32_t	ih_size;	/* Image Data Size */
+	uint32_t	ih_load;	/* Data» Load  Address */
+	uint32_t	ih_ep;		/* Entry Point Address */
+	uint32_t	ih_dcrc;	/* Image Data CRC Checksum */
+	uint8_t		ih_os;		/* Operating System */
+	uint8_t		ih_arch;	/* CPU architecture */
+	uint8_t		ih_type;	/* Image Type */
+	uint8_t		ih_comp;	/* Compression Type */
+	uint8_t		ih_name[IH_NMLEN];	/* Image Name */
+};
+
+struct wrt160nl_header {
+	struct cybertan_header	cybertan;
+	struct trx_header	trx;
+	struct uimage_header	uimage;
+} __attribute__ ((packed));
+
+#define WRT160NL_UBOOT_LEN	0x40000
+#define WRT160NL_ART_LEN	0x10000
+#define WRT160NL_NVRAM_LEN	0x10000
+
+static int wrt160nl_parse_partitions(struct mtd_info *master,
+				     struct mtd_partition **pparts,
+				     struct mtd_part_parser_data *data)
+{
+	struct wrt160nl_header *header;
+	struct trx_header *theader;
+	struct uimage_header *uheader;
+	struct mtd_partition *trx_parts;
+	size_t retlen;
+	unsigned int kernel_len;
+	unsigned int uboot_len;
+	unsigned int nvram_len;
+	unsigned int art_len;
+	int ret;
+
+	uboot_len = max_t(unsigned int, master->erasesize, WRT160NL_UBOOT_LEN);
+	nvram_len = max_t(unsigned int, master->erasesize, WRT160NL_NVRAM_LEN);
+	art_len = max_t(unsigned int, master->erasesize, WRT160NL_ART_LEN);
+
+	trx_parts = kzalloc(TRX_PARTS * sizeof(struct mtd_partition),
+			    GFP_KERNEL);
+	if (!trx_parts) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	header = vmalloc(sizeof(*header));
+	if (!header) {
+		return -ENOMEM;
+		goto free_parts;
+	}
+
+	ret = master->read(master, uboot_len, sizeof(*header),
+			   &retlen, (void *) header);
+	if (ret)
+		goto free_hdr;
+
+	if (retlen != sizeof(*header)) {
+		ret = -EIO;
+		goto free_hdr;
+	}
+
+	if (strncmp(header->cybertan.magic, "NL16", 4) != 0) {
+		printk(KERN_NOTICE "%s: no WRT160NL signature found\n",
+			master->name);
+		goto free_hdr;
+	}
+
+	theader = &header->trx;
+	if (le32_to_cpu(theader->magic) != TRX_MAGIC) {
+		printk(KERN_NOTICE "%s: no TRX header found\n", master->name);
+		goto free_hdr;
+	}
+
+	uheader = &header->uimage;
+	if (uheader->ih_magic != IH_MAGIC) {
+		printk(KERN_NOTICE "%s: no uImage found\n", master->name);
+		goto free_hdr;
+	}
+
+	kernel_len = le32_to_cpu(theader->offsets[1]) +
+		sizeof(struct cybertan_header);
+
+	trx_parts[0].name = "u-boot";
+	trx_parts[0].offset = 0;
+	trx_parts[0].size = uboot_len;
+	trx_parts[0].mask_flags = MTD_WRITEABLE;
+
+	trx_parts[1].name = "kernel";
+	trx_parts[1].offset = trx_parts[0].offset + trx_parts[0].size;
+	trx_parts[1].size = kernel_len;
+	trx_parts[1].mask_flags = 0;
+
+	trx_parts[2].name = "rootfs";
+	trx_parts[2].offset = trx_parts[1].offset + trx_parts[1].size;
+	trx_parts[2].size = master->size - uboot_len - nvram_len - art_len -
+		trx_parts[1].size;
+	trx_parts[2].mask_flags = 0;
+
+	trx_parts[3].name = "nvram";
+	trx_parts[3].offset = master->size - nvram_len - art_len;
+	trx_parts[3].size = nvram_len;
+	trx_parts[3].mask_flags = MTD_WRITEABLE;
+
+	trx_parts[4].name = "art";
+	trx_parts[4].offset = master->size - art_len;
+	trx_parts[4].size = art_len;
+	trx_parts[4].mask_flags = MTD_WRITEABLE;
+
+	trx_parts[5].name = "firmware";
+	trx_parts[5].offset = uboot_len;
+	trx_parts[5].size = master->size - uboot_len - nvram_len - art_len;
+	trx_parts[5].mask_flags = 0;
+
+	vfree(header);
+
+	*pparts = trx_parts;
+	return TRX_PARTS;
+
+free_hdr:
+	vfree(header);
+free_parts:
+	kfree(trx_parts);
+out:
+	return ret;
+}
+
+static struct mtd_part_parser wrt160nl_parser = {
+	.owner		= THIS_MODULE,
+	.parse_fn	= wrt160nl_parse_partitions,
+	.name		= "wrt160nl",
+};
+
+static int __init wrt160nl_parser_init(void)
+{
+	return register_mtd_parser(&wrt160nl_parser);
+}
+
+module_init(wrt160nl_parser_init);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Christian Daniel <cd@maintech.de>");