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-rw-r--r--target/linux/brcm47xx/patches-3.0/0014-mtd-bcm47xx-add-bcm47xx-part-parser.patch579
1 files changed, 579 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-3.0/0014-mtd-bcm47xx-add-bcm47xx-part-parser.patch b/target/linux/brcm47xx/patches-3.0/0014-mtd-bcm47xx-add-bcm47xx-part-parser.patch
new file mode 100644
index 0000000..98b1a44
--- /dev/null
+++ b/target/linux/brcm47xx/patches-3.0/0014-mtd-bcm47xx-add-bcm47xx-part-parser.patch
@@ -0,0 +1,579 @@
+From 4b449ce15d74e5973cde18381c2a3fa0616b2b3d Mon Sep 17 00:00:00 2001
+From: Hauke Mehrtens <hauke@hauke-m.de>
+Date: Sun, 17 Jul 2011 14:54:11 +0200
+Subject: [PATCH 14/18] mtd: bcm47xx: add bcm47xx part parser
+
+
+Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+---
+ drivers/mtd/Kconfig | 7 +
+ drivers/mtd/Makefile | 1 +
+ drivers/mtd/bcm47xxpart.c | 536 +++++++++++++++++++++++++++++++++++++++++++++
+ 3 files changed, 544 insertions(+), 0 deletions(-)
+ create mode 100644 drivers/mtd/bcm47xxpart.c
+
+--- a/drivers/mtd/Kconfig
++++ b/drivers/mtd/Kconfig
+@@ -173,6 +173,13 @@ 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
+@@ -12,6 +12,7 @@ obj-$(CONFIG_MTD_CMDLINE_PARTS) += cmdli
+ obj-$(CONFIG_MTD_AFS_PARTS) += afs.o
+ obj-$(CONFIG_MTD_AR7_PARTS) += ar7part.o
+ obj-$(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 +1,536 @@
++/*
++ * 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 <asm/io.h>
++#include <asm/mach-bcm47xx/nvram.h>
++#include <asm/mach-bcm47xx/bcm47xx.h>
++#include <asm/fw/cfe/cfe_api.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
++
++#define ROUTER_NETGEAR_WGR614L 1
++#define ROUTER_NETGEAR_WNR834B 2
++#define ROUTER_NETGEAR_WNDR3300 3
++#define ROUTER_NETGEAR_WNR3500L 4
++#define ROUTER_SIMPLETECH_SIMPLESHARE 5
++
++static struct mtd_partition bcm47xx_parts[] = {
++ { name: "cfe", offset: 0, size: 0, mask_flags: MTD_WRITEABLE, },
++ { name: "linux", offset: 0, size: 0, },
++ { name: "rootfs", offset: 0, size: 0, },
++ { name: "nvram", offset: 0, size: 0, },
++ { name: NULL, }, /* Used to create custom partitons with the function get_router() */
++ { name: NULL, },
++};
++
++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);
++ if (mtd->sync)
++ mtd->sync(mtd);
++ kfree(block);
++ pr_notice("Done\n");
++ }
++
++ return part->size;
++}
++
++static int get_router(void)
++{
++ char buf[20];
++ u32 boardnum = 0;
++ u16 boardtype = 0;
++ u16 boardrev = 0;
++ u32 boardflags = 0;
++ u16 sdram_init = 0;
++ u16 cardbus = 0;
++ u16 strev = 0;
++
++ if (nvram_getenv("boardnum", buf, sizeof(buf)) >= 0)
++ boardnum = simple_strtoul(buf, NULL, 0);
++ if (nvram_getenv("boardtype", buf, sizeof(buf)) >= 0)
++ boardtype = simple_strtoul(buf, NULL, 0);
++ if (nvram_getenv("boardrev", buf, sizeof(buf)) >= 0)
++ boardrev = simple_strtoul(buf, NULL, 0);
++ if (nvram_getenv("boardflags", buf, sizeof(buf)) >= 0)
++ boardflags = simple_strtoul(buf, NULL, 0);
++ if (nvram_getenv("sdram_init", buf, sizeof(buf)) >= 0)
++ sdram_init = simple_strtoul(buf, NULL, 0);
++ if (nvram_getenv("cardbus", buf, sizeof(buf)) >= 0)
++ cardbus = simple_strtoul(buf, NULL, 0);
++ if (nvram_getenv("st_rev", buf, sizeof(buf)) >= 0)
++ strev = simple_strtoul(buf, NULL, 0);
++
++ if ((boardnum == 8 || boardnum == 01)
++ && boardtype == 0x0472 && cardbus == 1) {
++ /* Netgear WNR834B, Netgear WNR834Bv2 */
++ return ROUTER_NETGEAR_WNR834B;
++ }
++
++ if (boardnum == 01 && boardtype == 0x0472 && boardrev == 0x23) {
++ /* Netgear WNDR-3300 */
++ return ROUTER_NETGEAR_WNDR3300;
++ }
++
++ if ((boardnum == 83258 || boardnum == 01)
++ && boardtype == 0x048e
++ && (boardrev == 0x11 || boardrev == 0x10)
++ && boardflags == 0x750
++ && sdram_init == 0x000A) {
++ /* Netgear WGR614v8/L/WW 16MB ram, cfe v1.3 or v1.5 */
++ return ROUTER_NETGEAR_WGR614L;
++ }
++
++ if ((boardnum == 1 || boardnum == 3500)
++ && boardtype == 0x04CF
++ && (boardrev == 0x1213 || boardrev == 02)) {
++ /* Netgear WNR3500v2/U/L */
++ return ROUTER_NETGEAR_WNR3500L;
++ }
++
++ if (boardtype == 0x042f
++ && boardrev == 0x10
++ && boardflags == 0
++ && strev == 0x11) {
++ /* Simpletech Simpleshare */
++ return ROUTER_SIMPLETECH_SIMPLESHARE;
++ }
++
++ return 0;
++}
++
++static int parse_bcm47xx_partitions(struct mtd_info *mtd,
++ struct mtd_partition **pparts,
++// struct mtd_part_parser_data *data)
++ unsigned long 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;
++
++ if ((cfe_size = find_cfe_size(mtd)) < 0)
++ return 0;
++
++ /* boot loader */
++ bcm47xx_parts[0].offset = 0;
++ bcm47xx_parts[0].size = cfe_size;
++
++ /* nvram */
++ if (cfe_size != 384 * 1024) {
++
++ switch (get_router()) {
++ case ROUTER_NETGEAR_WGR614L:
++ case ROUTER_NETGEAR_WNR834B:
++ case ROUTER_NETGEAR_WNDR3300:
++ case ROUTER_NETGEAR_WNR3500L:
++ /* 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;
++
++ case ROUTER_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);
++ break;
++
++ default:
++ 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 (get_router() == ROUTER_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");