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author | Hauke Mehrtens <hauke@hauke-m.de> | 2011-08-04 20:04:54 +0000 |
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committer | Hauke Mehrtens <hauke@hauke-m.de> | 2011-08-04 20:04:54 +0000 |
commit | 8428ebd8e84d4adef3267fc66c5d94105f79db15 (patch) | |
tree | 4c80f88d2fc88cb7f3c7e365eb58e8ad293dc3e3 /target/linux/brcm47xx/patches-3.0/0017-mtd-bcm47xx-add-bcm47xx-part-parser.patch | |
parent | 85b858fae67e4659cb990601b13ccc2078c1dffd (diff) | |
download | mtk-20170518-8428ebd8e84d4adef3267fc66c5d94105f79db15.zip mtk-20170518-8428ebd8e84d4adef3267fc66c5d94105f79db15.tar.gz mtk-20170518-8428ebd8e84d4adef3267fc66c5d94105f79db15.tar.bz2 |
brcm47xx: update patches
* this adds sflash support for ssb devices
* the flash is now a platform device
* minor updates
SVN-Revision: 27902
Diffstat (limited to 'target/linux/brcm47xx/patches-3.0/0017-mtd-bcm47xx-add-bcm47xx-part-parser.patch')
-rw-r--r-- | target/linux/brcm47xx/patches-3.0/0017-mtd-bcm47xx-add-bcm47xx-part-parser.patch | 579 |
1 files changed, 579 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-3.0/0017-mtd-bcm47xx-add-bcm47xx-part-parser.patch b/target/linux/brcm47xx/patches-3.0/0017-mtd-bcm47xx-add-bcm47xx-part-parser.patch new file mode 100644 index 0000000..284b83a --- /dev/null +++ b/target/linux/brcm47xx/patches-3.0/0017-mtd-bcm47xx-add-bcm47xx-part-parser.patch @@ -0,0 +1,579 @@ +From 1934b89b42976a083c2ad8d8fdc526ab5b05c5e4 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 17/26] 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 <linux/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; ++ ++ cfe_size = find_cfe_size(mtd); ++ if (cfe_size < 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"); |