+++ /dev/null
---- a/drivers/mtd/Kconfig
-+++ b/drivers/mtd/Kconfig
-@@ -172,6 +172,13 @@ config MTD_MYLOADER_PARTS
- You will still need the parsing functions to be called by the driver
- for your particular device. It won't happen automatically.
-
-+config MTD_BCM47XX_PARTS
-+ tristate "BCM47XX partitioning support"
-+ default y
-+ depends on BCM47XX
-+ ---help---
-+ bcm47XX partitioning support
-+
- comment "User Modules And Translation Layers"
-
- config MTD_CHAR
---- a/drivers/mtd/Makefile
-+++ b/drivers/mtd/Makefile
-@@ -13,6 +13,7 @@ obj-$(CONFIG_MTD_AFS_PARTS) += afs.o
- obj-$(CONFIG_MTD_AR7_PARTS) += ar7part.o
- obj-$(CONFIG_MTD_BCM63XX_PARTS) += bcm63xxpart.o
- obj-$(CONFIG_MTD_MYLOADER_PARTS) += myloader.o
-+obj-$(CONFIG_MTD_BCM47XX_PARTS) += bcm47xxpart.o
-
- # 'Users' - code which presents functionality to userspace.
- obj-$(CONFIG_MTD_CHAR) += mtdchar.o
---- /dev/null
-+++ b/drivers/mtd/bcm47xxpart.c
-@@ -0,0 +1,504 @@
-+/*
-+ * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
-+ * Copyright (C) 2005 Waldemar Brodkorb <wbx@openwrt.org>
-+ * Copyright (C) 2004 Florian Schirmer (jolt@tuxbox.org)
-+ *
-+ * original functions for finding root filesystem from Mike Baker
-+ *
-+ * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
-+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
-+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
-+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
-+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
-+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
-+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
-+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
-+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-+ *
-+ * 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.,
-+ * 675 Mass Ave, Cambridge, MA 02139, USA.
-+ *
-+ * Copyright 2001-2003, Broadcom Corporation
-+ * All Rights Reserved.
-+ *
-+ * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
-+ * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
-+ * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
-+ * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
-+ *
-+ * Flash mapping for BCM947XX boards
-+ */
-+
-+#define pr_fmt(fmt) "bcm47xx_part: " fmt
-+#include <linux/init.h>
-+#include <linux/module.h>
-+#include <linux/types.h>
-+#include <linux/kernel.h>
-+#include <linux/sched.h>
-+#include <linux/wait.h>
-+#include <linux/mtd/mtd.h>
-+#include <linux/mtd/partitions.h>
-+#include <linux/crc32.h>
-+#include <linux/io.h>
-+#include <bcm47xx_nvram.h>
-+#include <bcm47xx.h>
-+#include <asm/fw/cfe/cfe_api.h>
-+#include <bcm47xx_board.h>
-+
-+
-+#define TRX_MAGIC 0x30524448 /* "HDR0" */
-+#define TRX_VERSION 1
-+#define TRX_MAX_LEN 0x3A0000
-+#define TRX_NO_HEADER 1 /* Do not write TRX header */
-+#define TRX_GZ_FILES 0x2 /* Contains up to TRX_MAX_OFFSET individual gzip files */
-+#define TRX_MAX_OFFSET 3
-+
-+struct trx_header {
-+ u32 magic; /* "HDR0" */
-+ u32 len; /* Length of file including header */
-+ u32 crc32; /* 32-bit CRC from flag_version to end of file */
-+ u32 flag_version; /* 0:15 flags, 16:31 version */
-+ u32 offsets[TRX_MAX_OFFSET]; /* Offsets of partitions from start of header */
-+};
-+
-+/* for Edimax Print servers which use an additional header
-+ * then the firmware on flash looks like :
-+ * EDIMAX HEADER | TRX HEADER
-+ * As this header is 12 bytes long we have to handle it
-+ * and skip it to find the TRX header
-+ */
-+#define EDIMAX_PS_HEADER_MAGIC 0x36315350 /* "PS16" */
-+#define EDIMAX_PS_HEADER_LEN 0xc /* 12 bytes long for edimax header */
-+
-+#define NVRAM_SPACE 0x8000
-+
-+static int
-+find_cfe_size(struct mtd_info *mtd)
-+{
-+ struct trx_header *trx;
-+ unsigned char buf[512];
-+ int off;
-+ size_t len;
-+ int blocksize;
-+
-+ trx = (struct trx_header *) buf;
-+
-+ blocksize = mtd->erasesize;
-+ if (blocksize < 0x10000)
-+ blocksize = 0x10000;
-+
-+ for (off = (128*1024); off < mtd->size; off += blocksize) {
-+ memset(buf, 0xe5, sizeof(buf));
-+
-+ /*
-+ * Read into buffer
-+ */
-+ if (mtd_read(mtd, off, sizeof(buf), &len, buf) ||
-+ len != sizeof(buf))
-+ continue;
-+
-+ if (le32_to_cpu(trx->magic) == EDIMAX_PS_HEADER_MAGIC) {
-+ if (mtd_read(mtd, off + EDIMAX_PS_HEADER_LEN,
-+ sizeof(buf), &len, buf) || len != sizeof(buf)) {
-+ continue;
-+ } else {
-+ pr_notice("Found edimax header\n");
-+ }
-+ }
-+
-+ /* found a TRX header */
-+ if (le32_to_cpu(trx->magic) == TRX_MAGIC)
-+ goto found;
-+ }
-+
-+ pr_notice("%s: Couldn't find bootloader size\n", mtd->name);
-+ return -1;
-+
-+ found:
-+ pr_notice("bootloader size: %d\n", off);
-+ return off;
-+
-+}
-+
-+/*
-+ * Copied from mtdblock.c
-+ *
-+ * Cache stuff...
-+ *
-+ * Since typical flash erasable sectors are much larger than what Linux's
-+ * buffer cache can handle, we must implement read-modify-write on flash
-+ * sectors for each block write requests. To avoid over-erasing flash sectors
-+ * and to speed things up, we locally cache a whole flash sector while it is
-+ * being written to until a different sector is required.
-+ */
-+
-+static void erase_callback(struct erase_info *done)
-+{
-+ wait_queue_head_t *wait_q = (wait_queue_head_t *)done->priv;
-+ wake_up(wait_q);
-+}
-+
-+static int erase_write(struct mtd_info *mtd, unsigned long pos,
-+ int len, const char *buf)
-+{
-+ struct erase_info erase;
-+ DECLARE_WAITQUEUE(wait, current);
-+ wait_queue_head_t wait_q;
-+ size_t retlen;
-+ int ret;
-+
-+ /*
-+ * First, let's erase the flash block.
-+ */
-+
-+ init_waitqueue_head(&wait_q);
-+ erase.mtd = mtd;
-+ erase.callback = erase_callback;
-+ erase.addr = pos;
-+ erase.len = len;
-+ erase.priv = (u_long)&wait_q;
-+
-+ set_current_state(TASK_INTERRUPTIBLE);
-+ add_wait_queue(&wait_q, &wait);
-+
-+ ret = mtd_erase(mtd, &erase);
-+ if (ret) {
-+ set_current_state(TASK_RUNNING);
-+ remove_wait_queue(&wait_q, &wait);
-+ pr_warn("erase of region [0x%lx, 0x%x] on \"%s\" failed\n",
-+ pos, len, mtd->name);
-+ return ret;
-+ }
-+
-+ schedule(); /* Wait for erase to finish. */
-+ remove_wait_queue(&wait_q, &wait);
-+
-+ /*
-+ * Next, write data to flash.
-+ */
-+
-+ ret = mtd_write(mtd, pos, len, &retlen, buf);
-+ if (ret)
-+ return ret;
-+ if (retlen != len)
-+ return -EIO;
-+ return 0;
-+}
-+
-+
-+static int
-+find_dual_image_off(struct mtd_info *mtd)
-+{
-+ struct trx_header trx;
-+ int off, blocksize;
-+ size_t len;
-+
-+ blocksize = mtd->erasesize;
-+ if (blocksize < 0x10000)
-+ blocksize = 0x10000;
-+
-+ for (off = (128*1024); off < mtd->size; off += blocksize) {
-+ memset(&trx, 0xe5, sizeof(trx));
-+ /*
-+ * Read into buffer
-+ */
-+ if (mtd_read(mtd, off, sizeof(trx), &len, (char *) &trx) ||
-+ len != sizeof(trx))
-+ continue;
-+ /* found last TRX header */
-+ if (le32_to_cpu(trx.magic) == TRX_MAGIC) {
-+ if (le32_to_cpu(trx.flag_version >> 16) == 2) {
-+ pr_notice("dual image TRX header found\n");
-+ return mtd->size / 2;
-+ } else {
-+ return 0;
-+ }
-+ }
-+ }
-+ return 0;
-+}
-+
-+
-+static int
-+find_root(struct mtd_info *mtd, struct mtd_partition *part)
-+{
-+ struct trx_header trx, *trx2;
-+ unsigned char buf[512], *block;
-+ int off, blocksize, trxoff = 0;
-+ u32 i, crc = ~0;
-+ size_t len;
-+ bool edimax = false;
-+
-+ blocksize = mtd->erasesize;
-+ if (blocksize < 0x10000)
-+ blocksize = 0x10000;
-+
-+ for (off = (128*1024); off < mtd->size; off += blocksize) {
-+ memset(&trx, 0xe5, sizeof(trx));
-+
-+ /*
-+ * Read into buffer
-+ */
-+ if (mtd_read(mtd, off, sizeof(trx), &len, (char *) &trx) ||
-+ len != sizeof(trx))
-+ continue;
-+
-+ /* found an edimax header */
-+ if (le32_to_cpu(trx.magic) == EDIMAX_PS_HEADER_MAGIC) {
-+ /* read the correct trx header */
-+ if (mtd_read(mtd, off + EDIMAX_PS_HEADER_LEN,
-+ sizeof(trx), &len, (char *) &trx) ||
-+ len != sizeof(trx)) {
-+ continue;
-+ } else {
-+ pr_notice("Found an edimax ps header\n");
-+ edimax = true;
-+ }
-+ }
-+
-+ /* found a TRX header */
-+ if (le32_to_cpu(trx.magic) == TRX_MAGIC) {
-+ part->offset = le32_to_cpu(trx.offsets[2]) ? :
-+ le32_to_cpu(trx.offsets[1]);
-+ part->size = le32_to_cpu(trx.len);
-+
-+ part->size -= part->offset;
-+ part->offset += off;
-+ if (edimax) {
-+ off += EDIMAX_PS_HEADER_LEN;
-+ trxoff = EDIMAX_PS_HEADER_LEN;
-+ }
-+
-+ goto found;
-+ }
-+ }
-+
-+ pr_warn("%s: Couldn't find root filesystem\n",
-+ mtd->name);
-+ return -1;
-+
-+ found:
-+ pr_notice("TRX offset : %x\n", trxoff);
-+ if (part->size == 0)
-+ return 0;
-+
-+ if (mtd_read(mtd, part->offset, sizeof(buf), &len, buf) || len != sizeof(buf))
-+ return 0;
-+
-+ /* Move the fs outside of the trx */
-+ part->size = 0;
-+
-+ if (trx.len != part->offset + part->size - off) {
-+ /* Update the trx offsets and length */
-+ trx.len = part->offset + part->size - off;
-+
-+ /* Update the trx crc32 */
-+ for (i = (u32) &(((struct trx_header *)NULL)->flag_version); i <= trx.len; i += sizeof(buf)) {
-+ if (mtd_read(mtd, off + i, sizeof(buf), &len, buf) || len != sizeof(buf))
-+ return 0;
-+ crc = crc32_le(crc, buf, min(sizeof(buf), trx.len - i));
-+ }
-+ trx.crc32 = crc;
-+
-+ /* read first eraseblock from the trx */
-+ block = kmalloc(mtd->erasesize, GFP_KERNEL);
-+ trx2 = (struct trx_header *) block;
-+ if (mtd_read(mtd, off - trxoff, mtd->erasesize, &len, block) || len != mtd->erasesize) {
-+ pr_err("Error accessing the first trx eraseblock\n");
-+ return 0;
-+ }
-+
-+ pr_notice("Updating TRX offsets and length:\n");
-+ pr_notice("old trx = [0x%08x, 0x%08x, 0x%08x], len=0x%08x crc32=0x%08x\n", trx2->offsets[0], trx2->offsets[1], trx2->offsets[2], trx2->len, trx2->crc32);
-+ pr_notice("new trx = [0x%08x, 0x%08x, 0x%08x], len=0x%08x crc32=0x%08x\n", trx.offsets[0], trx.offsets[1], trx.offsets[2], trx.len, trx.crc32);
-+
-+ /* Write updated trx header to the flash */
-+ memcpy(block + trxoff, &trx, sizeof(trx));
-+ if (mtd->_unlock)
-+ mtd->_unlock(mtd, off - trxoff, mtd->erasesize);
-+ erase_write(mtd, off - trxoff, mtd->erasesize, block);
-+ mtd_sync(mtd);
-+ kfree(block);
-+ pr_notice("Done\n");
-+ }
-+
-+ return part->size;
-+}
-+
-+static bool is_simpletech_simpleshare(void)
-+{
-+ char buf[20];
-+ u16 boardtype = 0;
-+ u16 boardrev = 0;
-+ u32 boardflags = 0;
-+ u16 strev = 0;
-+
-+ if (bcm47xx_nvram_getenv("boardtype", buf, sizeof(buf)) >= 0)
-+ boardtype = simple_strtoul(buf, NULL, 0);
-+ if (bcm47xx_nvram_getenv("boardrev", buf, sizeof(buf)) >= 0)
-+ boardrev = simple_strtoul(buf, NULL, 0);
-+ if (bcm47xx_nvram_getenv("boardflags", buf, sizeof(buf)) >= 0)
-+ boardflags = simple_strtoul(buf, NULL, 0);
-+ if (bcm47xx_nvram_getenv("st_rev", buf, sizeof(buf)) >= 0)
-+ strev = simple_strtoul(buf, NULL, 0);
-+
-+ if (boardtype == 0x042f
-+ && boardrev == 0x10
-+ && boardflags == 0
-+ && strev == 0x11) {
-+ /* Simpletech Simpleshare */
-+ return true;
-+ }
-+
-+ return false;
-+}
-+
-+static int parse_bcm47xx_partitions(struct mtd_info *mtd,
-+ struct mtd_partition **pparts,
-+ struct mtd_part_parser_data *data)
-+{
-+ int cfe_size;
-+ int dual_image_offset = 0;
-+ /* e.g Netgear 0x003e0000-0x003f0000 : "board_data", we exclude this
-+ * part from our mapping to prevent overwriting len/checksum on e.g.
-+ * Netgear WGR614v8/L/WW
-+ */
-+ int custom_data_size = 0;
-+ struct mtd_partition *bcm47xx_parts;
-+
-+ cfe_size = find_cfe_size(mtd);
-+ if (cfe_size < 0)
-+ return 0;
-+
-+ bcm47xx_parts = kzalloc(sizeof(struct mtd_partition) * 6, GFP_KERNEL);
-+
-+ bcm47xx_parts[0].name = "cfe";
-+ bcm47xx_parts[1].name = "linux";
-+ bcm47xx_parts[2].name = "rootfs";
-+ bcm47xx_parts[3].name = "nvram";
-+
-+ /* boot loader */
-+ bcm47xx_parts[0].mask_flags = MTD_WRITEABLE;
-+ bcm47xx_parts[0].offset = 0;
-+ bcm47xx_parts[0].size = cfe_size;
-+
-+ /* nvram */
-+ if (cfe_size != 384 * 1024) {
-+
-+ switch (bcm47xx_board_get()) {
-+ case BCM47XX_BOARD_NETGEAR_WGR614V8:
-+ case BCM47XX_BOARD_NETGEAR_WGR614V9:
-+ case BCM47XX_BOARD_NETGEAR_WNDR3300:
-+ case BCM47XX_BOARD_NETGEAR_WNDR3400V1:
-+ case BCM47XX_BOARD_NETGEAR_WNDR3400V2:
-+ case BCM47XX_BOARD_NETGEAR_WNDR3400VCNA:
-+ case BCM47XX_BOARD_NETGEAR_WNDR3700V3:
-+ case BCM47XX_BOARD_NETGEAR_WNDR4000:
-+ case BCM47XX_BOARD_NETGEAR_WNDR4500:
-+ case BCM47XX_BOARD_NETGEAR_WNR2000:
-+ case BCM47XX_BOARD_NETGEAR_WNR3500L:
-+ case BCM47XX_BOARD_NETGEAR_WNR3500U:
-+ case BCM47XX_BOARD_NETGEAR_WNR3500V2:
-+ case BCM47XX_BOARD_NETGEAR_WNR3500V2VC:
-+ case BCM47XX_BOARD_NETGEAR_WNR834BV2:
-+ /* Netgear: checksum is @ 0x003AFFF8 for 4M flash or checksum
-+ * is @ 0x007AFFF8 for 8M flash
-+ */
-+ custom_data_size = mtd->erasesize;
-+
-+ bcm47xx_parts[3].offset = mtd->size - roundup(NVRAM_SPACE, mtd->erasesize);
-+ bcm47xx_parts[3].size = roundup(NVRAM_SPACE, mtd->erasesize);
-+
-+ /* Place CFE board_data into a partition */
-+ bcm47xx_parts[4].name = "board_data";
-+ bcm47xx_parts[4].offset = bcm47xx_parts[3].offset - custom_data_size;
-+ bcm47xx_parts[4].size = custom_data_size;
-+ break;
-+
-+ default:
-+ if (is_simpletech_simpleshare()) {
-+ /* Fixup Simpletech Simple share nvram */
-+
-+ pr_notice("Setting up simpletech nvram\n");
-+ custom_data_size = mtd->erasesize;
-+
-+ bcm47xx_parts[3].offset = mtd->size - roundup(NVRAM_SPACE, mtd->erasesize) * 2;
-+ bcm47xx_parts[3].size = roundup(NVRAM_SPACE, mtd->erasesize);
-+
-+ /* Place backup nvram into a partition */
-+ bcm47xx_parts[4].name = "nvram_copy";
-+ bcm47xx_parts[4].offset = mtd->size - roundup(NVRAM_SPACE, mtd->erasesize);
-+ bcm47xx_parts[4].size = roundup(NVRAM_SPACE, mtd->erasesize);
-+ } else {
-+ bcm47xx_parts[3].offset = mtd->size - roundup(NVRAM_SPACE, mtd->erasesize);
-+ bcm47xx_parts[3].size = roundup(NVRAM_SPACE, mtd->erasesize);
-+ }
-+ }
-+
-+ } else {
-+ /* nvram (old 128kb config partition on netgear wgt634u) */
-+ bcm47xx_parts[3].offset = bcm47xx_parts[0].size;
-+ bcm47xx_parts[3].size = roundup(NVRAM_SPACE, mtd->erasesize);
-+ }
-+
-+ /* dual image offset*/
-+ pr_notice("Looking for dual image\n");
-+ dual_image_offset = find_dual_image_off(mtd);
-+ /* linux (kernel and rootfs) */
-+ if (cfe_size != 384 * 1024) {
-+ if (is_simpletech_simpleshare()) {
-+ bcm47xx_parts[1].offset = bcm47xx_parts[0].size;
-+ bcm47xx_parts[1].size = bcm47xx_parts[4].offset - dual_image_offset -
-+ bcm47xx_parts[1].offset - custom_data_size;
-+ } else {
-+ bcm47xx_parts[1].offset = bcm47xx_parts[0].size;
-+ bcm47xx_parts[1].size = bcm47xx_parts[3].offset - dual_image_offset -
-+ bcm47xx_parts[1].offset - custom_data_size;
-+ }
-+ } else {
-+ /* do not count the elf loader, which is on one block */
-+ bcm47xx_parts[1].offset = bcm47xx_parts[0].size +
-+ bcm47xx_parts[3].size + mtd->erasesize;
-+ bcm47xx_parts[1].size = mtd->size -
-+ bcm47xx_parts[0].size -
-+ (2*bcm47xx_parts[3].size) -
-+ mtd->erasesize - custom_data_size;
-+ }
-+
-+ /* find and size rootfs */
-+ find_root(mtd, &bcm47xx_parts[2]);
-+ bcm47xx_parts[2].size = mtd->size - dual_image_offset -
-+ bcm47xx_parts[2].offset -
-+ bcm47xx_parts[3].size - custom_data_size;
-+ *pparts = bcm47xx_parts;
-+ return bcm47xx_parts[4].name == NULL ? 4 : 5;
-+}
-+
-+static struct mtd_part_parser bcm47xx_parser = {
-+ .owner = THIS_MODULE,
-+ .parse_fn = parse_bcm47xx_partitions,
-+ .name = "bcm47xx",
-+};
-+
-+static int __init bcm47xx_parser_init(void)
-+{
-+ return register_mtd_parser(&bcm47xx_parser);
-+}
-+
-+static void __exit bcm47xx_parser_exit(void)
-+{
-+ deregister_mtd_parser(&bcm47xx_parser);
-+}
-+
-+module_init(bcm47xx_parser_init);
-+module_exit(bcm47xx_parser_exit);
-+
-+MODULE_LICENSE("GPL");
-+MODULE_DESCRIPTION("Parsing code for flash partitions on bcm47xx SoCs");
projects / openwrt / svn-archive / archive.git / blobdiff