mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-08-22 03:47:08 +03:00
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@31573 3c298f89-4303-0410-b956-a3cf2f4a3e73
572 lines
17 KiB
Diff
572 lines
17 KiB
Diff
--- 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 +1,542 @@
|
|
+/*
|
|
+ * 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
|
|
+#define ROUTER_NETGEAR_WNDR3400 6
|
|
+
|
|
+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 (boardnum == 1 && boardtype == 0xb4cf && boardrev == 0x1100) {
|
|
+ /* Netgear WNDR3400 */
|
|
+ return ROUTER_NETGEAR_WNDR3400;
|
|
+ }
|
|
+
|
|
+ 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)
|
|
+{
|
|
+ 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 (get_router()) {
|
|
+ case ROUTER_NETGEAR_WGR614L:
|
|
+ case ROUTER_NETGEAR_WNR834B:
|
|
+ case ROUTER_NETGEAR_WNDR3300:
|
|
+ case ROUTER_NETGEAR_WNR3500L:
|
|
+ case ROUTER_NETGEAR_WNDR3400:
|
|
+ /* 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");
|