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@@ -1,25 +1,244 @@
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---- a/drivers/mtd/Kconfig
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-+++ b/drivers/mtd/Kconfig
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-@@ -46,6 +46,12 @@ menu "Partition parsers"
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- source "drivers/mtd/parsers/Kconfig"
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- endmenu
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+--- a/drivers/mtd/parsers/Kconfig
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++++ b/drivers/mtd/parsers/Kconfig
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+@@ -184,3 +184,9 @@ config MTD_MYLOADER_PARTS
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+ You will still need the parsing functions to be called by the driver
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+ for your particular device. It won't happen automatically.
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++
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+config MTD_TPLINK_PARTS
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+ tristate "TP-Link AR7XXX/AR9XXX partitioning support"
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+ depends on ATH79
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+ ---help---
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+ TBD.
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+--- a/drivers/mtd/parsers/Makefile
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++++ b/drivers/mtd/parsers/Makefile
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+@@ -11,3 +11,4 @@ obj-$(CONFIG_MTD_PARSER_TRX) += parser_
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+ obj-$(CONFIG_MTD_SHARPSL_PARTS) += sharpslpart.o
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+ obj-$(CONFIG_MTD_REDBOOT_PARTS) += redboot.o
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+ obj-$(CONFIG_MTD_MYLOADER_PARTS) += myloader.o
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++obj-$(CONFIG_MTD_TPLINK_PARTS) += tplinkpart.o
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+--- /dev/null
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++++ b/drivers/mtd/parsers/tplinkpart.c
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+@@ -0,0 +1,222 @@
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++/*
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++ * Copyright (C) 2011 Gabor Juhos <[email protected]>
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++ *
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++ * This program is free software; you can redistribute it and/or modify it
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++ * under the terms of the GNU General Public License version 2 as published
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++ * by the Free Software Foundation.
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++ */
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+
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- comment "User Modules And Translation Layers"
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-
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- #
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---- a/drivers/mtd/Makefile
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-+++ b/drivers/mtd/Makefile
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-@@ -8,6 +8,7 @@ obj-$(CONFIG_MTD) += mtd.o
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- mtd-y := mtdcore.o mtdsuper.o mtdconcat.o mtdpart.o mtdchar.o
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-
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- obj-y += parsers/
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-+obj-$(CONFIG_MTD_TPLINK_PARTS) += tplinkpart.o
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-
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- obj-$(CONFIG_MTD_SPLIT) += mtdsplit/
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-
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++#include <linux/kernel.h>
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++#include <linux/module.h>
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++#include <linux/slab.h>
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++#include <linux/vmalloc.h>
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++#include <linux/magic.h>
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++
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++#include <linux/mtd/mtd.h>
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++#include <linux/mtd/partitions.h>
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++#include <linux/version.h>
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++
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++#define TPLINK_NUM_PARTS 5
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++#define TPLINK_HEADER_V1 0x01000000
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++#define TPLINK_HEADER_V2 0x02000000
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++#define MD5SUM_LEN 16
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++
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++#define TPLINK_ART_LEN 0x10000
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++#define TPLINK_KERNEL_OFFS 0x20000
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++#define TPLINK_64K_KERNEL_OFFS 0x10000
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++
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++struct tplink_fw_header {
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++ uint32_t version; /* header version */
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++ char vendor_name[24];
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++ char fw_version[36];
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++ uint32_t hw_id; /* hardware id */
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++ uint32_t hw_rev; /* hardware revision */
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++ uint32_t unk1;
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++ uint8_t md5sum1[MD5SUM_LEN];
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++ uint32_t unk2;
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++ uint8_t md5sum2[MD5SUM_LEN];
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++ uint32_t unk3;
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++ uint32_t kernel_la; /* kernel load address */
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++ uint32_t kernel_ep; /* kernel entry point */
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++ uint32_t fw_length; /* total length of the firmware */
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++ uint32_t kernel_ofs; /* kernel data offset */
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++ uint32_t kernel_len; /* kernel data length */
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++ uint32_t rootfs_ofs; /* rootfs data offset */
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++ uint32_t rootfs_len; /* rootfs data length */
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++ uint32_t boot_ofs; /* bootloader data offset */
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++ uint32_t boot_len; /* bootloader data length */
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++ uint8_t pad[360];
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++} __attribute__ ((packed));
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++
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++static struct tplink_fw_header *
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++tplink_read_header(struct mtd_info *mtd, size_t offset)
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++{
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++ struct tplink_fw_header *header;
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++ size_t header_len;
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++ size_t retlen;
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++ int ret;
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++ u32 t;
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++
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++ header = vmalloc(sizeof(*header));
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++ if (!header)
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++ goto err;
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++
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++ header_len = sizeof(struct tplink_fw_header);
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++ ret = mtd_read(mtd, offset, header_len, &retlen,
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++ (unsigned char *) header);
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++ if (ret)
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++ goto err_free_header;
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++
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++ if (retlen != header_len)
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++ goto err_free_header;
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++
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++ /* sanity checks */
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++ t = be32_to_cpu(header->version);
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++ if ((t != TPLINK_HEADER_V1) && (t != TPLINK_HEADER_V2))
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++ goto err_free_header;
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++
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++ t = be32_to_cpu(header->kernel_ofs);
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++ if (t != header_len)
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++ goto err_free_header;
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++
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++ return header;
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++
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++err_free_header:
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++ vfree(header);
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++err:
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++ return NULL;
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++}
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++
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++static int tplink_check_rootfs_magic(struct mtd_info *mtd, size_t offset)
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++{
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++ u32 magic;
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++ size_t retlen;
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++ int ret;
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++
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++ ret = mtd_read(mtd, offset, sizeof(magic), &retlen,
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++ (unsigned char *) &magic);
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++ if (ret)
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++ return ret;
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++
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++ if (retlen != sizeof(magic))
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++ return -EIO;
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++
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++ if (le32_to_cpu(magic) != SQUASHFS_MAGIC &&
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++ magic != 0x19852003)
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++ return -EINVAL;
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++
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++ return 0;
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++}
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++
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++static int tplink_parse_partitions_offset(struct mtd_info *master,
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++ const struct mtd_partition **pparts,
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++ struct mtd_part_parser_data *data,
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++ size_t offset)
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++{
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++ struct mtd_partition *parts;
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++ struct tplink_fw_header *header;
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++ int nr_parts;
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++ size_t art_offset;
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++ size_t rootfs_offset;
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++ size_t squashfs_offset;
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++ int ret;
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++
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++ nr_parts = TPLINK_NUM_PARTS;
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++ parts = kzalloc(nr_parts * sizeof(struct mtd_partition), GFP_KERNEL);
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++ if (!parts) {
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++ ret = -ENOMEM;
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++ goto err;
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++ }
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++
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++ header = tplink_read_header(master, offset);
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++ if (!header) {
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++ pr_notice("%s: no TP-Link header found\n", master->name);
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++ ret = -ENODEV;
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++ goto err_free_parts;
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++ }
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++
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++ squashfs_offset = offset + sizeof(struct tplink_fw_header) +
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++ be32_to_cpu(header->kernel_len);
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++
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++ ret = tplink_check_rootfs_magic(master, squashfs_offset);
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++ if (ret == 0)
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++ rootfs_offset = squashfs_offset;
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++ else
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++ rootfs_offset = offset + be32_to_cpu(header->rootfs_ofs);
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++
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++ art_offset = master->size - TPLINK_ART_LEN;
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++
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++ parts[0].name = "u-boot";
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++ parts[0].offset = 0;
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++ parts[0].size = offset;
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++ parts[0].mask_flags = MTD_WRITEABLE;
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++
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++ parts[1].name = "kernel";
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++ parts[1].offset = offset;
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++ parts[1].size = rootfs_offset - offset;
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++
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++ parts[2].name = "rootfs";
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++ parts[2].offset = rootfs_offset;
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++ parts[2].size = art_offset - rootfs_offset;
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++
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++ parts[3].name = "art";
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++ parts[3].offset = art_offset;
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++ parts[3].size = TPLINK_ART_LEN;
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++ parts[3].mask_flags = MTD_WRITEABLE;
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++
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++ parts[4].name = "firmware";
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++ parts[4].offset = offset;
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++ parts[4].size = art_offset - offset;
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++
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++ vfree(header);
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++
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++ *pparts = parts;
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++ return nr_parts;
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++
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++err_free_parts:
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++ kfree(parts);
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++err:
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++ *pparts = NULL;
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++ return ret;
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++}
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++
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++static int tplink_parse_partitions(struct mtd_info *master,
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++ const struct mtd_partition **pparts,
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++ struct mtd_part_parser_data *data)
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++{
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++ return tplink_parse_partitions_offset(master, pparts, data,
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++ TPLINK_KERNEL_OFFS);
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++}
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++
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++static int tplink_parse_64k_partitions(struct mtd_info *master,
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++ const struct mtd_partition **pparts,
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++ struct mtd_part_parser_data *data)
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++{
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++ return tplink_parse_partitions_offset(master, pparts, data,
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++ TPLINK_64K_KERNEL_OFFS);
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++}
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++
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++static struct mtd_part_parser tplink_parser = {
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++ .owner = THIS_MODULE,
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++ .parse_fn = tplink_parse_partitions,
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++ .name = "tp-link",
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++};
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++
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++static struct mtd_part_parser tplink_64k_parser = {
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++ .owner = THIS_MODULE,
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++ .parse_fn = tplink_parse_64k_partitions,
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++ .name = "tp-link-64k",
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++};
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++
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++static int __init tplink_parser_init(void)
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++{
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++ register_mtd_parser(&tplink_parser);
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++ register_mtd_parser(&tplink_64k_parser);
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++
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++ return 0;
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++}
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++
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++module_init(tplink_parser_init);
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++
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++MODULE_LICENSE("GPL v2");
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++MODULE_AUTHOR("Gabor Juhos <[email protected]>");
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Adrian Schmutzler