From 2c5bea6134b3f2a601323b48c4d6c58ced2cf727 Mon Sep 17 00:00:00 2001 From: hauke Date: Sun, 5 Dec 2010 18:34:58 +0000 Subject: brcm47xx: use on common files dir git-svn-id: svn://svn.openwrt.org/openwrt/trunk@24264 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- .../files-2.6.34/drivers/mtd/maps/bcm47xx-flash.c | 596 --------------------- .../files-2.6.36/drivers/mtd/maps/bcm47xx-flash.c | 596 --------------------- .../files-2.6.37/drivers/mtd/maps/bcm47xx-flash.c | 596 --------------------- .../files/drivers/mtd/maps/bcm47xx-flash.c | 596 +++++++++++++++++++++ 4 files changed, 596 insertions(+), 1788 deletions(-) delete mode 100644 target/linux/brcm47xx/files-2.6.34/drivers/mtd/maps/bcm47xx-flash.c delete mode 100644 target/linux/brcm47xx/files-2.6.36/drivers/mtd/maps/bcm47xx-flash.c delete mode 100644 target/linux/brcm47xx/files-2.6.37/drivers/mtd/maps/bcm47xx-flash.c create mode 100644 target/linux/brcm47xx/files/drivers/mtd/maps/bcm47xx-flash.c (limited to 'target/linux/brcm47xx') diff --git a/target/linux/brcm47xx/files-2.6.34/drivers/mtd/maps/bcm47xx-flash.c b/target/linux/brcm47xx/files-2.6.34/drivers/mtd/maps/bcm47xx-flash.c deleted file mode 100644 index 4585c4f9e..000000000 --- a/target/linux/brcm47xx/files-2.6.34/drivers/mtd/maps/bcm47xx-flash.c +++ /dev/null @@ -1,596 +0,0 @@ -/* - * Copyright (C) 2006 Felix Fietkau - * Copyright (C) 2005 Waldemar Brodkorb - * 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 - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#ifdef CONFIG_MTD_PARTITIONS -#include -#endif -#include -#ifdef CONFIG_SSB -#include -#endif -#include -#include -#include - - -#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 ROUNDUP(x, y) ((((x)+((y)-1))/(y))*(y)) -#define NVRAM_SPACE 0x8000 -#define WINDOW_ADDR 0x1fc00000 -#define WINDOW_SIZE 0x400000 -#define BUSWIDTH 2 - -#define ROUTER_NETGEAR_WGR614L 1 -#define ROUTER_NETGEAR_WNR834B 2 -#define ROUTER_NETGEAR_WNDR3300 3 -#define ROUTER_NETGEAR_WNR3500L 4 - -#ifdef CONFIG_SSB -extern struct ssb_bus ssb_bcm47xx; -#endif -static struct mtd_info *bcm47xx_mtd; - -static void bcm47xx_map_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len) -{ - if (len==1) { - memcpy_fromio(to, map->virt + from, len); - } else { - int i; - u16 *dest = (u16 *) to; - u16 *src = (u16 *) (map->virt + from); - for (i = 0; i < (len / 2); i++) { - dest[i] = src[i]; - } - if (len & 1) - *((u8 *)dest+len-1) = src[i] & 0xff; - } -} - -static struct map_info bcm47xx_map = { - name: "Physically mapped flash", - size: WINDOW_SIZE, - bankwidth: BUSWIDTH, - phys: WINDOW_ADDR, -}; - -#ifdef CONFIG_MTD_PARTITIONS - -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, }, -}; - -static int __init -find_cfe_size(struct mtd_info *mtd, size_t size) -{ - 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 < 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 { - printk(KERN_NOTICE"Found edimax header\n"); - } - } - - /* found a TRX header */ - if (le32_to_cpu(trx->magic) == TRX_MAGIC) { - goto found; - } - } - - printk(KERN_NOTICE - "%s: Couldn't find bootloader size\n", - mtd->name); - return -1; - - found: - printk(KERN_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); - printk (KERN_WARNING "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 __init -find_dual_image_off (struct mtd_info *mtd, size_t size) -{ - struct trx_header trx; - int off, blocksize; - size_t len; - - blocksize = mtd->erasesize; - if (blocksize < 0x10000) - blocksize = 0x10000; - - for (off = (128*1024); off < 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){ - printk("dual image TRX header found\n"); - return size/2; - } else { - return 0; - } - } - } - return 0; -} - - -static int __init -find_root(struct mtd_info *mtd, size_t size, 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 < 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 { - printk(KERN_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; - } - } - - printk(KERN_NOTICE - "%s: Couldn't find root filesystem\n", - mtd->name); - return -1; - - found: - printk(KERN_NOTICE"TRX offset : %lx\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) { - printk("Error accessing the first trx eraseblock\n"); - return 0; - } - - printk("Updating TRX offsets and length:\n"); - printk("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); - printk("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); - printk("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; - - if (nvram_getenv("boardnum", buf, sizeof(buf)) >= 0 || - cfe_getenv("boardnum", buf, sizeof(buf)) >= 0) - boardnum = simple_strtoul(buf, NULL, 0); - if (nvram_getenv("boardtype", buf, sizeof(buf)) >= 0 || - cfe_getenv("boardtype", buf, sizeof(buf)) >= 0) - boardtype = simple_strtoul(buf, NULL, 0); - if (nvram_getenv("boardrev", buf, sizeof(buf)) >= 0 || - cfe_getenv("boardrev", buf, sizeof(buf)) >= 0) - boardrev = simple_strtoul(buf, NULL, 0); - if (nvram_getenv("boardflags", buf, sizeof(buf)) >= 0 || - cfe_getenv("boardflags", buf, sizeof(buf)) >= 0) - boardflags = simple_strtoul(buf, NULL, 0); - if (nvram_getenv("sdram_init", buf, sizeof(buf)) >= 0 || - cfe_getenv("sdram_init", buf, sizeof(buf)) >= 0) - sdram_init = simple_strtoul(buf, NULL, 0); - if (nvram_getenv("cardbus", buf, sizeof(buf)) >= 0 || - cfe_getenv("cardbus", buf, sizeof(buf)) >= 0) - cardbus = 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; - } - - return 0; -} - -struct mtd_partition * __init -init_mtd_partitions(struct mtd_info *mtd, size_t size) -{ - 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 board_data_size = 0; - - 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 - */ - board_data_size = 4 * mtd->erasesize; - break; - } - - if ((cfe_size = find_cfe_size(mtd,size)) < 0) - return NULL; - - /* boot loader */ - bcm47xx_parts[0].offset = 0; - bcm47xx_parts[0].size = cfe_size; - - /* nvram */ - if (cfe_size != 384 * 1024) { - bcm47xx_parts[3].offset = 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*/ - printk("Looking for dual image\n"); - dual_image_offset=find_dual_image_off(mtd,size); - /* linux (kernel and rootfs) */ - if (cfe_size != 384 * 1024) { - bcm47xx_parts[1].offset = bcm47xx_parts[0].size; - bcm47xx_parts[1].size = bcm47xx_parts[3].offset - dual_image_offset - - bcm47xx_parts[1].offset - board_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 = size - - bcm47xx_parts[0].size - - (2*bcm47xx_parts[3].size) - - mtd->erasesize - board_data_size; - } - - /* find and size rootfs */ - find_root(mtd,size,&bcm47xx_parts[2]); - bcm47xx_parts[2].size = size - dual_image_offset - - bcm47xx_parts[2].offset - - bcm47xx_parts[3].size - board_data_size; - - return bcm47xx_parts; -} -#endif - -int __init init_bcm47xx_map(void) -{ -#ifdef CONFIG_SSB - struct ssb_mipscore *mcore = &ssb_bcm47xx.mipscore; -#endif - size_t size; - int ret = 0; -#ifdef CONFIG_MTD_PARTITIONS - struct mtd_partition *parts; - int i; -#endif - -#ifdef CONFIG_SSB - u32 window = mcore->flash_window; - u32 window_size = mcore->flash_window_size; - - printk("flash init: 0x%08x 0x%08x\n", window, window_size); - bcm47xx_map.phys = window; - bcm47xx_map.size = window_size; - bcm47xx_map.bankwidth = mcore->flash_buswidth; - bcm47xx_map.virt = ioremap_nocache(window, window_size); -#else - printk("flash init: 0x%08x 0x%08x\n", WINDOW_ADDR, WINDOW_SIZE); - bcm47xx_map.virt = ioremap_nocache(WINDOW_ADDR, WINDOW_SIZE); -#endif - - if (!bcm47xx_map.virt) { - printk("Failed to ioremap\n"); - return -EIO; - } - - simple_map_init(&bcm47xx_map); - - if (!(bcm47xx_mtd = do_map_probe("cfi_probe", &bcm47xx_map))) { - printk("Failed to do_map_probe\n"); - iounmap((void *)bcm47xx_map.virt); - return -ENXIO; - } - - /* override copy_from routine */ - bcm47xx_map.copy_from = bcm47xx_map_copy_from; - - bcm47xx_mtd->owner = THIS_MODULE; - - size = bcm47xx_mtd->size; - - printk(KERN_NOTICE "Flash device: 0x%x at 0x%x\n", size, WINDOW_ADDR); - -#ifdef CONFIG_MTD_PARTITIONS - parts = init_mtd_partitions(bcm47xx_mtd, size); - for (i = 0; parts[i].name; i++); - ret = add_mtd_partitions(bcm47xx_mtd, parts, i); - if (ret) { - printk(KERN_ERR "Flash: add_mtd_partitions failed\n"); - goto fail; - } -#endif - return 0; - - fail: - if (bcm47xx_mtd) - map_destroy(bcm47xx_mtd); - if (bcm47xx_map.virt) - iounmap((void *)bcm47xx_map.virt); - bcm47xx_map.virt = 0; - return ret; -} - -void __exit cleanup_bcm47xx_map(void) -{ -#ifdef CONFIG_MTD_PARTITIONS - del_mtd_partitions(bcm47xx_mtd); -#endif - map_destroy(bcm47xx_mtd); - iounmap((void *)bcm47xx_map.virt); -} - -module_init(init_bcm47xx_map); -module_exit(cleanup_bcm47xx_map); diff --git a/target/linux/brcm47xx/files-2.6.36/drivers/mtd/maps/bcm47xx-flash.c b/target/linux/brcm47xx/files-2.6.36/drivers/mtd/maps/bcm47xx-flash.c deleted file mode 100644 index 4585c4f9e..000000000 --- a/target/linux/brcm47xx/files-2.6.36/drivers/mtd/maps/bcm47xx-flash.c +++ /dev/null @@ -1,596 +0,0 @@ -/* - * Copyright (C) 2006 Felix Fietkau - * Copyright (C) 2005 Waldemar Brodkorb - * 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 - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#ifdef CONFIG_MTD_PARTITIONS -#include -#endif -#include -#ifdef CONFIG_SSB -#include -#endif -#include -#include -#include - - -#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 ROUNDUP(x, y) ((((x)+((y)-1))/(y))*(y)) -#define NVRAM_SPACE 0x8000 -#define WINDOW_ADDR 0x1fc00000 -#define WINDOW_SIZE 0x400000 -#define BUSWIDTH 2 - -#define ROUTER_NETGEAR_WGR614L 1 -#define ROUTER_NETGEAR_WNR834B 2 -#define ROUTER_NETGEAR_WNDR3300 3 -#define ROUTER_NETGEAR_WNR3500L 4 - -#ifdef CONFIG_SSB -extern struct ssb_bus ssb_bcm47xx; -#endif -static struct mtd_info *bcm47xx_mtd; - -static void bcm47xx_map_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len) -{ - if (len==1) { - memcpy_fromio(to, map->virt + from, len); - } else { - int i; - u16 *dest = (u16 *) to; - u16 *src = (u16 *) (map->virt + from); - for (i = 0; i < (len / 2); i++) { - dest[i] = src[i]; - } - if (len & 1) - *((u8 *)dest+len-1) = src[i] & 0xff; - } -} - -static struct map_info bcm47xx_map = { - name: "Physically mapped flash", - size: WINDOW_SIZE, - bankwidth: BUSWIDTH, - phys: WINDOW_ADDR, -}; - -#ifdef CONFIG_MTD_PARTITIONS - -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, }, -}; - -static int __init -find_cfe_size(struct mtd_info *mtd, size_t size) -{ - 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 < 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 { - printk(KERN_NOTICE"Found edimax header\n"); - } - } - - /* found a TRX header */ - if (le32_to_cpu(trx->magic) == TRX_MAGIC) { - goto found; - } - } - - printk(KERN_NOTICE - "%s: Couldn't find bootloader size\n", - mtd->name); - return -1; - - found: - printk(KERN_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); - printk (KERN_WARNING "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 __init -find_dual_image_off (struct mtd_info *mtd, size_t size) -{ - struct trx_header trx; - int off, blocksize; - size_t len; - - blocksize = mtd->erasesize; - if (blocksize < 0x10000) - blocksize = 0x10000; - - for (off = (128*1024); off < 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){ - printk("dual image TRX header found\n"); - return size/2; - } else { - return 0; - } - } - } - return 0; -} - - -static int __init -find_root(struct mtd_info *mtd, size_t size, 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 < 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 { - printk(KERN_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; - } - } - - printk(KERN_NOTICE - "%s: Couldn't find root filesystem\n", - mtd->name); - return -1; - - found: - printk(KERN_NOTICE"TRX offset : %lx\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) { - printk("Error accessing the first trx eraseblock\n"); - return 0; - } - - printk("Updating TRX offsets and length:\n"); - printk("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); - printk("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); - printk("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; - - if (nvram_getenv("boardnum", buf, sizeof(buf)) >= 0 || - cfe_getenv("boardnum", buf, sizeof(buf)) >= 0) - boardnum = simple_strtoul(buf, NULL, 0); - if (nvram_getenv("boardtype", buf, sizeof(buf)) >= 0 || - cfe_getenv("boardtype", buf, sizeof(buf)) >= 0) - boardtype = simple_strtoul(buf, NULL, 0); - if (nvram_getenv("boardrev", buf, sizeof(buf)) >= 0 || - cfe_getenv("boardrev", buf, sizeof(buf)) >= 0) - boardrev = simple_strtoul(buf, NULL, 0); - if (nvram_getenv("boardflags", buf, sizeof(buf)) >= 0 || - cfe_getenv("boardflags", buf, sizeof(buf)) >= 0) - boardflags = simple_strtoul(buf, NULL, 0); - if (nvram_getenv("sdram_init", buf, sizeof(buf)) >= 0 || - cfe_getenv("sdram_init", buf, sizeof(buf)) >= 0) - sdram_init = simple_strtoul(buf, NULL, 0); - if (nvram_getenv("cardbus", buf, sizeof(buf)) >= 0 || - cfe_getenv("cardbus", buf, sizeof(buf)) >= 0) - cardbus = 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; - } - - return 0; -} - -struct mtd_partition * __init -init_mtd_partitions(struct mtd_info *mtd, size_t size) -{ - 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 board_data_size = 0; - - 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 - */ - board_data_size = 4 * mtd->erasesize; - break; - } - - if ((cfe_size = find_cfe_size(mtd,size)) < 0) - return NULL; - - /* boot loader */ - bcm47xx_parts[0].offset = 0; - bcm47xx_parts[0].size = cfe_size; - - /* nvram */ - if (cfe_size != 384 * 1024) { - bcm47xx_parts[3].offset = 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*/ - printk("Looking for dual image\n"); - dual_image_offset=find_dual_image_off(mtd,size); - /* linux (kernel and rootfs) */ - if (cfe_size != 384 * 1024) { - bcm47xx_parts[1].offset = bcm47xx_parts[0].size; - bcm47xx_parts[1].size = bcm47xx_parts[3].offset - dual_image_offset - - bcm47xx_parts[1].offset - board_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 = size - - bcm47xx_parts[0].size - - (2*bcm47xx_parts[3].size) - - mtd->erasesize - board_data_size; - } - - /* find and size rootfs */ - find_root(mtd,size,&bcm47xx_parts[2]); - bcm47xx_parts[2].size = size - dual_image_offset - - bcm47xx_parts[2].offset - - bcm47xx_parts[3].size - board_data_size; - - return bcm47xx_parts; -} -#endif - -int __init init_bcm47xx_map(void) -{ -#ifdef CONFIG_SSB - struct ssb_mipscore *mcore = &ssb_bcm47xx.mipscore; -#endif - size_t size; - int ret = 0; -#ifdef CONFIG_MTD_PARTITIONS - struct mtd_partition *parts; - int i; -#endif - -#ifdef CONFIG_SSB - u32 window = mcore->flash_window; - u32 window_size = mcore->flash_window_size; - - printk("flash init: 0x%08x 0x%08x\n", window, window_size); - bcm47xx_map.phys = window; - bcm47xx_map.size = window_size; - bcm47xx_map.bankwidth = mcore->flash_buswidth; - bcm47xx_map.virt = ioremap_nocache(window, window_size); -#else - printk("flash init: 0x%08x 0x%08x\n", WINDOW_ADDR, WINDOW_SIZE); - bcm47xx_map.virt = ioremap_nocache(WINDOW_ADDR, WINDOW_SIZE); -#endif - - if (!bcm47xx_map.virt) { - printk("Failed to ioremap\n"); - return -EIO; - } - - simple_map_init(&bcm47xx_map); - - if (!(bcm47xx_mtd = do_map_probe("cfi_probe", &bcm47xx_map))) { - printk("Failed to do_map_probe\n"); - iounmap((void *)bcm47xx_map.virt); - return -ENXIO; - } - - /* override copy_from routine */ - bcm47xx_map.copy_from = bcm47xx_map_copy_from; - - bcm47xx_mtd->owner = THIS_MODULE; - - size = bcm47xx_mtd->size; - - printk(KERN_NOTICE "Flash device: 0x%x at 0x%x\n", size, WINDOW_ADDR); - -#ifdef CONFIG_MTD_PARTITIONS - parts = init_mtd_partitions(bcm47xx_mtd, size); - for (i = 0; parts[i].name; i++); - ret = add_mtd_partitions(bcm47xx_mtd, parts, i); - if (ret) { - printk(KERN_ERR "Flash: add_mtd_partitions failed\n"); - goto fail; - } -#endif - return 0; - - fail: - if (bcm47xx_mtd) - map_destroy(bcm47xx_mtd); - if (bcm47xx_map.virt) - iounmap((void *)bcm47xx_map.virt); - bcm47xx_map.virt = 0; - return ret; -} - -void __exit cleanup_bcm47xx_map(void) -{ -#ifdef CONFIG_MTD_PARTITIONS - del_mtd_partitions(bcm47xx_mtd); -#endif - map_destroy(bcm47xx_mtd); - iounmap((void *)bcm47xx_map.virt); -} - -module_init(init_bcm47xx_map); -module_exit(cleanup_bcm47xx_map); diff --git a/target/linux/brcm47xx/files-2.6.37/drivers/mtd/maps/bcm47xx-flash.c b/target/linux/brcm47xx/files-2.6.37/drivers/mtd/maps/bcm47xx-flash.c deleted file mode 100644 index 4585c4f9e..000000000 --- a/target/linux/brcm47xx/files-2.6.37/drivers/mtd/maps/bcm47xx-flash.c +++ /dev/null @@ -1,596 +0,0 @@ -/* - * Copyright (C) 2006 Felix Fietkau - * Copyright (C) 2005 Waldemar Brodkorb - * 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 - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#ifdef CONFIG_MTD_PARTITIONS -#include -#endif -#include -#ifdef CONFIG_SSB -#include -#endif -#include -#include -#include - - -#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 ROUNDUP(x, y) ((((x)+((y)-1))/(y))*(y)) -#define NVRAM_SPACE 0x8000 -#define WINDOW_ADDR 0x1fc00000 -#define WINDOW_SIZE 0x400000 -#define BUSWIDTH 2 - -#define ROUTER_NETGEAR_WGR614L 1 -#define ROUTER_NETGEAR_WNR834B 2 -#define ROUTER_NETGEAR_WNDR3300 3 -#define ROUTER_NETGEAR_WNR3500L 4 - -#ifdef CONFIG_SSB -extern struct ssb_bus ssb_bcm47xx; -#endif -static struct mtd_info *bcm47xx_mtd; - -static void bcm47xx_map_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len) -{ - if (len==1) { - memcpy_fromio(to, map->virt + from, len); - } else { - int i; - u16 *dest = (u16 *) to; - u16 *src = (u16 *) (map->virt + from); - for (i = 0; i < (len / 2); i++) { - dest[i] = src[i]; - } - if (len & 1) - *((u8 *)dest+len-1) = src[i] & 0xff; - } -} - -static struct map_info bcm47xx_map = { - name: "Physically mapped flash", - size: WINDOW_SIZE, - bankwidth: BUSWIDTH, - phys: WINDOW_ADDR, -}; - -#ifdef CONFIG_MTD_PARTITIONS - -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, }, -}; - -static int __init -find_cfe_size(struct mtd_info *mtd, size_t size) -{ - 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 < 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 { - printk(KERN_NOTICE"Found edimax header\n"); - } - } - - /* found a TRX header */ - if (le32_to_cpu(trx->magic) == TRX_MAGIC) { - goto found; - } - } - - printk(KERN_NOTICE - "%s: Couldn't find bootloader size\n", - mtd->name); - return -1; - - found: - printk(KERN_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); - printk (KERN_WARNING "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 __init -find_dual_image_off (struct mtd_info *mtd, size_t size) -{ - struct trx_header trx; - int off, blocksize; - size_t len; - - blocksize = mtd->erasesize; - if (blocksize < 0x10000) - blocksize = 0x10000; - - for (off = (128*1024); off < 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){ - printk("dual image TRX header found\n"); - return size/2; - } else { - return 0; - } - } - } - return 0; -} - - -static int __init -find_root(struct mtd_info *mtd, size_t size, 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 < 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 { - printk(KERN_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; - } - } - - printk(KERN_NOTICE - "%s: Couldn't find root filesystem\n", - mtd->name); - return -1; - - found: - printk(KERN_NOTICE"TRX offset : %lx\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) { - printk("Error accessing the first trx eraseblock\n"); - return 0; - } - - printk("Updating TRX offsets and length:\n"); - printk("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); - printk("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); - printk("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; - - if (nvram_getenv("boardnum", buf, sizeof(buf)) >= 0 || - cfe_getenv("boardnum", buf, sizeof(buf)) >= 0) - boardnum = simple_strtoul(buf, NULL, 0); - if (nvram_getenv("boardtype", buf, sizeof(buf)) >= 0 || - cfe_getenv("boardtype", buf, sizeof(buf)) >= 0) - boardtype = simple_strtoul(buf, NULL, 0); - if (nvram_getenv("boardrev", buf, sizeof(buf)) >= 0 || - cfe_getenv("boardrev", buf, sizeof(buf)) >= 0) - boardrev = simple_strtoul(buf, NULL, 0); - if (nvram_getenv("boardflags", buf, sizeof(buf)) >= 0 || - cfe_getenv("boardflags", buf, sizeof(buf)) >= 0) - boardflags = simple_strtoul(buf, NULL, 0); - if (nvram_getenv("sdram_init", buf, sizeof(buf)) >= 0 || - cfe_getenv("sdram_init", buf, sizeof(buf)) >= 0) - sdram_init = simple_strtoul(buf, NULL, 0); - if (nvram_getenv("cardbus", buf, sizeof(buf)) >= 0 || - cfe_getenv("cardbus", buf, sizeof(buf)) >= 0) - cardbus = 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; - } - - return 0; -} - -struct mtd_partition * __init -init_mtd_partitions(struct mtd_info *mtd, size_t size) -{ - 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 board_data_size = 0; - - 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 - */ - board_data_size = 4 * mtd->erasesize; - break; - } - - if ((cfe_size = find_cfe_size(mtd,size)) < 0) - return NULL; - - /* boot loader */ - bcm47xx_parts[0].offset = 0; - bcm47xx_parts[0].size = cfe_size; - - /* nvram */ - if (cfe_size != 384 * 1024) { - bcm47xx_parts[3].offset = 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*/ - printk("Looking for dual image\n"); - dual_image_offset=find_dual_image_off(mtd,size); - /* linux (kernel and rootfs) */ - if (cfe_size != 384 * 1024) { - bcm47xx_parts[1].offset = bcm47xx_parts[0].size; - bcm47xx_parts[1].size = bcm47xx_parts[3].offset - dual_image_offset - - bcm47xx_parts[1].offset - board_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 = size - - bcm47xx_parts[0].size - - (2*bcm47xx_parts[3].size) - - mtd->erasesize - board_data_size; - } - - /* find and size rootfs */ - find_root(mtd,size,&bcm47xx_parts[2]); - bcm47xx_parts[2].size = size - dual_image_offset - - bcm47xx_parts[2].offset - - bcm47xx_parts[3].size - board_data_size; - - return bcm47xx_parts; -} -#endif - -int __init init_bcm47xx_map(void) -{ -#ifdef CONFIG_SSB - struct ssb_mipscore *mcore = &ssb_bcm47xx.mipscore; -#endif - size_t size; - int ret = 0; -#ifdef CONFIG_MTD_PARTITIONS - struct mtd_partition *parts; - int i; -#endif - -#ifdef CONFIG_SSB - u32 window = mcore->flash_window; - u32 window_size = mcore->flash_window_size; - - printk("flash init: 0x%08x 0x%08x\n", window, window_size); - bcm47xx_map.phys = window; - bcm47xx_map.size = window_size; - bcm47xx_map.bankwidth = mcore->flash_buswidth; - bcm47xx_map.virt = ioremap_nocache(window, window_size); -#else - printk("flash init: 0x%08x 0x%08x\n", WINDOW_ADDR, WINDOW_SIZE); - bcm47xx_map.virt = ioremap_nocache(WINDOW_ADDR, WINDOW_SIZE); -#endif - - if (!bcm47xx_map.virt) { - printk("Failed to ioremap\n"); - return -EIO; - } - - simple_map_init(&bcm47xx_map); - - if (!(bcm47xx_mtd = do_map_probe("cfi_probe", &bcm47xx_map))) { - printk("Failed to do_map_probe\n"); - iounmap((void *)bcm47xx_map.virt); - return -ENXIO; - } - - /* override copy_from routine */ - bcm47xx_map.copy_from = bcm47xx_map_copy_from; - - bcm47xx_mtd->owner = THIS_MODULE; - - size = bcm47xx_mtd->size; - - printk(KERN_NOTICE "Flash device: 0x%x at 0x%x\n", size, WINDOW_ADDR); - -#ifdef CONFIG_MTD_PARTITIONS - parts = init_mtd_partitions(bcm47xx_mtd, size); - for (i = 0; parts[i].name; i++); - ret = add_mtd_partitions(bcm47xx_mtd, parts, i); - if (ret) { - printk(KERN_ERR "Flash: add_mtd_partitions failed\n"); - goto fail; - } -#endif - return 0; - - fail: - if (bcm47xx_mtd) - map_destroy(bcm47xx_mtd); - if (bcm47xx_map.virt) - iounmap((void *)bcm47xx_map.virt); - bcm47xx_map.virt = 0; - return ret; -} - -void __exit cleanup_bcm47xx_map(void) -{ -#ifdef CONFIG_MTD_PARTITIONS - del_mtd_partitions(bcm47xx_mtd); -#endif - map_destroy(bcm47xx_mtd); - iounmap((void *)bcm47xx_map.virt); -} - -module_init(init_bcm47xx_map); -module_exit(cleanup_bcm47xx_map); diff --git a/target/linux/brcm47xx/files/drivers/mtd/maps/bcm47xx-flash.c b/target/linux/brcm47xx/files/drivers/mtd/maps/bcm47xx-flash.c new file mode 100644 index 000000000..4585c4f9e --- /dev/null +++ b/target/linux/brcm47xx/files/drivers/mtd/maps/bcm47xx-flash.c @@ -0,0 +1,596 @@ +/* + * Copyright (C) 2006 Felix Fietkau + * Copyright (C) 2005 Waldemar Brodkorb + * 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 + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#ifdef CONFIG_MTD_PARTITIONS +#include +#endif +#include +#ifdef CONFIG_SSB +#include +#endif +#include +#include +#include + + +#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 ROUNDUP(x, y) ((((x)+((y)-1))/(y))*(y)) +#define NVRAM_SPACE 0x8000 +#define WINDOW_ADDR 0x1fc00000 +#define WINDOW_SIZE 0x400000 +#define BUSWIDTH 2 + +#define ROUTER_NETGEAR_WGR614L 1 +#define ROUTER_NETGEAR_WNR834B 2 +#define ROUTER_NETGEAR_WNDR3300 3 +#define ROUTER_NETGEAR_WNR3500L 4 + +#ifdef CONFIG_SSB +extern struct ssb_bus ssb_bcm47xx; +#endif +static struct mtd_info *bcm47xx_mtd; + +static void bcm47xx_map_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len) +{ + if (len==1) { + memcpy_fromio(to, map->virt + from, len); + } else { + int i; + u16 *dest = (u16 *) to; + u16 *src = (u16 *) (map->virt + from); + for (i = 0; i < (len / 2); i++) { + dest[i] = src[i]; + } + if (len & 1) + *((u8 *)dest+len-1) = src[i] & 0xff; + } +} + +static struct map_info bcm47xx_map = { + name: "Physically mapped flash", + size: WINDOW_SIZE, + bankwidth: BUSWIDTH, + phys: WINDOW_ADDR, +}; + +#ifdef CONFIG_MTD_PARTITIONS + +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, }, +}; + +static int __init +find_cfe_size(struct mtd_info *mtd, size_t size) +{ + 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 < 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 { + printk(KERN_NOTICE"Found edimax header\n"); + } + } + + /* found a TRX header */ + if (le32_to_cpu(trx->magic) == TRX_MAGIC) { + goto found; + } + } + + printk(KERN_NOTICE + "%s: Couldn't find bootloader size\n", + mtd->name); + return -1; + + found: + printk(KERN_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); + printk (KERN_WARNING "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 __init +find_dual_image_off (struct mtd_info *mtd, size_t size) +{ + struct trx_header trx; + int off, blocksize; + size_t len; + + blocksize = mtd->erasesize; + if (blocksize < 0x10000) + blocksize = 0x10000; + + for (off = (128*1024); off < 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){ + printk("dual image TRX header found\n"); + return size/2; + } else { + return 0; + } + } + } + return 0; +} + + +static int __init +find_root(struct mtd_info *mtd, size_t size, 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 < 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 { + printk(KERN_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; + } + } + + printk(KERN_NOTICE + "%s: Couldn't find root filesystem\n", + mtd->name); + return -1; + + found: + printk(KERN_NOTICE"TRX offset : %lx\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) { + printk("Error accessing the first trx eraseblock\n"); + return 0; + } + + printk("Updating TRX offsets and length:\n"); + printk("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); + printk("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); + printk("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; + + if (nvram_getenv("boardnum", buf, sizeof(buf)) >= 0 || + cfe_getenv("boardnum", buf, sizeof(buf)) >= 0) + boardnum = simple_strtoul(buf, NULL, 0); + if (nvram_getenv("boardtype", buf, sizeof(buf)) >= 0 || + cfe_getenv("boardtype", buf, sizeof(buf)) >= 0) + boardtype = simple_strtoul(buf, NULL, 0); + if (nvram_getenv("boardrev", buf, sizeof(buf)) >= 0 || + cfe_getenv("boardrev", buf, sizeof(buf)) >= 0) + boardrev = simple_strtoul(buf, NULL, 0); + if (nvram_getenv("boardflags", buf, sizeof(buf)) >= 0 || + cfe_getenv("boardflags", buf, sizeof(buf)) >= 0) + boardflags = simple_strtoul(buf, NULL, 0); + if (nvram_getenv("sdram_init", buf, sizeof(buf)) >= 0 || + cfe_getenv("sdram_init", buf, sizeof(buf)) >= 0) + sdram_init = simple_strtoul(buf, NULL, 0); + if (nvram_getenv("cardbus", buf, sizeof(buf)) >= 0 || + cfe_getenv("cardbus", buf, sizeof(buf)) >= 0) + cardbus = 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; + } + + return 0; +} + +struct mtd_partition * __init +init_mtd_partitions(struct mtd_info *mtd, size_t size) +{ + 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 board_data_size = 0; + + 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 + */ + board_data_size = 4 * mtd->erasesize; + break; + } + + if ((cfe_size = find_cfe_size(mtd,size)) < 0) + return NULL; + + /* boot loader */ + bcm47xx_parts[0].offset = 0; + bcm47xx_parts[0].size = cfe_size; + + /* nvram */ + if (cfe_size != 384 * 1024) { + bcm47xx_parts[3].offset = 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*/ + printk("Looking for dual image\n"); + dual_image_offset=find_dual_image_off(mtd,size); + /* linux (kernel and rootfs) */ + if (cfe_size != 384 * 1024) { + bcm47xx_parts[1].offset = bcm47xx_parts[0].size; + bcm47xx_parts[1].size = bcm47xx_parts[3].offset - dual_image_offset - + bcm47xx_parts[1].offset - board_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 = size - + bcm47xx_parts[0].size - + (2*bcm47xx_parts[3].size) - + mtd->erasesize - board_data_size; + } + + /* find and size rootfs */ + find_root(mtd,size,&bcm47xx_parts[2]); + bcm47xx_parts[2].size = size - dual_image_offset - + bcm47xx_parts[2].offset - + bcm47xx_parts[3].size - board_data_size; + + return bcm47xx_parts; +} +#endif + +int __init init_bcm47xx_map(void) +{ +#ifdef CONFIG_SSB + struct ssb_mipscore *mcore = &ssb_bcm47xx.mipscore; +#endif + size_t size; + int ret = 0; +#ifdef CONFIG_MTD_PARTITIONS + struct mtd_partition *parts; + int i; +#endif + +#ifdef CONFIG_SSB + u32 window = mcore->flash_window; + u32 window_size = mcore->flash_window_size; + + printk("flash init: 0x%08x 0x%08x\n", window, window_size); + bcm47xx_map.phys = window; + bcm47xx_map.size = window_size; + bcm47xx_map.bankwidth = mcore->flash_buswidth; + bcm47xx_map.virt = ioremap_nocache(window, window_size); +#else + printk("flash init: 0x%08x 0x%08x\n", WINDOW_ADDR, WINDOW_SIZE); + bcm47xx_map.virt = ioremap_nocache(WINDOW_ADDR, WINDOW_SIZE); +#endif + + if (!bcm47xx_map.virt) { + printk("Failed to ioremap\n"); + return -EIO; + } + + simple_map_init(&bcm47xx_map); + + if (!(bcm47xx_mtd = do_map_probe("cfi_probe", &bcm47xx_map))) { + printk("Failed to do_map_probe\n"); + iounmap((void *)bcm47xx_map.virt); + return -ENXIO; + } + + /* override copy_from routine */ + bcm47xx_map.copy_from = bcm47xx_map_copy_from; + + bcm47xx_mtd->owner = THIS_MODULE; + + size = bcm47xx_mtd->size; + + printk(KERN_NOTICE "Flash device: 0x%x at 0x%x\n", size, WINDOW_ADDR); + +#ifdef CONFIG_MTD_PARTITIONS + parts = init_mtd_partitions(bcm47xx_mtd, size); + for (i = 0; parts[i].name; i++); + ret = add_mtd_partitions(bcm47xx_mtd, parts, i); + if (ret) { + printk(KERN_ERR "Flash: add_mtd_partitions failed\n"); + goto fail; + } +#endif + return 0; + + fail: + if (bcm47xx_mtd) + map_destroy(bcm47xx_mtd); + if (bcm47xx_map.virt) + iounmap((void *)bcm47xx_map.virt); + bcm47xx_map.virt = 0; + return ret; +} + +void __exit cleanup_bcm47xx_map(void) +{ +#ifdef CONFIG_MTD_PARTITIONS + del_mtd_partitions(bcm47xx_mtd); +#endif + map_destroy(bcm47xx_mtd); + iounmap((void *)bcm47xx_map.virt); +} + +module_init(init_bcm47xx_map); +module_exit(cleanup_bcm47xx_map); -- cgit v1.2.3