parent
25fc88fe41
commit
dc23692cac
@ -1,474 +1,277 @@ |
||||
/*
|
||||
* Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org> |
||||
* Copyright (C) 2005 Waldemar Brodkorb <wbx@openwrt.org> |
||||
* Copyright (C) 2004 Florian Schirmer (jolt@tuxbox.org) |
||||
* $Id$ |
||||
* Copyright (C) 2006 Florian Fainelli <florian@openwrt.org> |
||||
* Mike Albon <malbon@openwrt.org> |
||||
* Copyright (C) $Date$ $Author$ |
||||
* |
||||
* 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 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 program is distributed in the hope that it will be useful, |
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
* GNU General Public License for more details. |
||||
* |
||||
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
||||
*/ |
||||
|
||||
/* This is the BCM963xx flash map driver, in its actual state it only supports BCM96348 devices
|
||||
* this driver is able to manage both bootloader we found on these boards : CFE and RedBoot |
||||
* |
||||
* RedBoot : |
||||
* - this bootloader allows us to parse partitions and therefore deduce the MTD partition table |
||||
* |
||||
* 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. |
||||
* CFE : |
||||
* - CFE partitionning can be detected as for BCM947xx devices
|
||||
* |
||||
* Flash mapping for BCM963XX boards |
||||
*/ |
||||
|
||||
#include <asm/io.h> |
||||
#include <linux/init.h> |
||||
#include <linux/module.h> |
||||
#include <linux/types.h> |
||||
#include <linux/kernel.h> |
||||
#include <linux/wait.h> |
||||
#include <linux/mtd/mtd.h> |
||||
#include <linux/mtd/map.h> |
||||
#ifdef CONFIG_MTD_PARTITIONS |
||||
#include <linux/mtd/mtd.h> |
||||
#include <linux/mtd/partitions.h> |
||||
#endif |
||||
#include <linux/squashfs_fs.h> |
||||
#include <linux/jffs2.h> |
||||
#include <linux/crc32.h> |
||||
#include <asm/io.h> |
||||
#include <linux/vmalloc.h> |
||||
#include <board.h> |
||||
|
||||
#include <asm/mach-bcm963xx/bootloaders.h> |
||||
#define WINDOW_ADDR 0x1FC00000 /* Real address of the flash */ |
||||
#define WINDOW_SIZE 0x400000 /* Size of flash */ |
||||
#define BUSWIDTH 2 /* Buswidth */ |
||||
#define EXTENDED_SIZE 0xBFC00000 /* Extended flash address */ |
||||
#define IMAGE_LEN 10 /* Length of Length Field */ |
||||
#define ADDRESS_LEN 12 /* Length of Address field */ |
||||
#define ROUNDUP(x, y) ((((x)+((y)-1))/(y))*(y)) |
||||
|
||||
extern int boot_loader_type; |
||||
extern int boot_loader_type; /* For RedBoot / CFE detection */ |
||||
extern int parse_redboot_partitions(struct mtd_info *master, struct mtd_partition **pparts, unsigned long fis_origin); |
||||
static struct mtd_partition *parsed_parts; |
||||
|
||||
static void __exit bcm963xx_mtd_cleanup(void); |
||||
|
||||
#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 |
||||
static struct mtd_info *bcm963xx_mtd_info; |
||||
|
||||
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 */ |
||||
static struct map_info bcm963xx_map = { |
||||
.name = "bcm963xx", |
||||
.size = WINDOW_SIZE, |
||||
.bankwidth = BUSWIDTH, |
||||
.phys = WINDOW_ADDR, |
||||
}; |
||||
|
||||
#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 EXTENDED_SIZE 0xBFC00000 /* Extended flash address */ |
||||
|
||||
static struct mtd_info *bcm963xx_mtd; |
||||
|
||||
static struct map_info bcm963xx_map = { |
||||
.name = "Physically mapped flash", |
||||
.size = WINDOW_SIZE, |
||||
.bankwidth = BUSWIDTH, |
||||
.phys = WINDOW_ADDR, |
||||
int parse_cfe_partitions( struct mtd_info *master, struct mtd_partition **pparts) |
||||
{ |
||||
int nrparts = 2, curpart = 0; // CFE and NVRAM always present.
|
||||
struct bcm963xx_cfe_map { |
||||
unsigned char tagVersion[4]; // Version of the image tag
|
||||
unsigned char sig_1[20]; // Company Line 1
|
||||
unsigned char sig_2[14]; // Company Line 2
|
||||
unsigned char chipid[6]; // Chip this image is for
|
||||
unsigned char boardid[16]; // Board name
|
||||
unsigned char bigEndian[2]; // Map endianness -- 1 BE 0 LE
|
||||
unsigned char totalLength[IMAGE_LEN]; //Total length of image
|
||||
unsigned char cfeAddress[ADDRESS_LEN]; // Address in memory of CFE
|
||||
unsigned char cfeLength[IMAGE_LEN]; // Size of CFE
|
||||
unsigned char rootAddress[ADDRESS_LEN]; // Address in memory of rootfs
|
||||
unsigned char rootLength[IMAGE_LEN]; // Size of rootfs
|
||||
unsigned char kernelAddress[ADDRESS_LEN]; // Address in memory of kernel
|
||||
unsigned char kernelLength[IMAGE_LEN]; // Size of kernel
|
||||
unsigned char dualImage[2]; // Unused at present
|
||||
unsigned char inactiveFlag[2]; // Unused at present
|
||||
unsigned char reserved1[74]; // Reserved area not in use
|
||||
unsigned char imageCRC[4]; // CRC32 of images
|
||||
unsigned char reserved2[16]; // Unused at present
|
||||
unsigned char headerCRC[4]; // CRC32 of header excluding tagVersion
|
||||
unsigned char reserved3[16]; // Unused at present
|
||||
} *buf; |
||||
struct mtd_partition *parts; |
||||
int ret; |
||||
size_t retlen; |
||||
unsigned int rootfsaddr, kerneladdr, spareaddr; |
||||
unsigned int rootfslen, kernellen, sparelen, totallen; |
||||
int namelen = 0; |
||||
int i; |
||||
// Allocate memory for buffer
|
||||
buf = vmalloc(sizeof(struct bcm963xx_cfe_map)); |
||||
|
||||
if (!buf) |
||||
return -ENOMEM; |
||||
|
||||
// Get the tag
|
||||
ret = master->read(master,master->erasesize,sizeof(struct bcm963xx_cfe_map), &retlen, (void *)buf); |
||||
if (retlen != sizeof(struct bcm963xx_cfe_map)){ |
||||
vfree(buf); |
||||
return -EIO; |
||||
}; |
||||
printk("bcm963xx: CFE boot tag found with version %s and board type %s.\n",buf->tagVersion,buf->boardid); |
||||
// Get the values and calculate
|
||||
sscanf(buf->rootAddress,"%u", &rootfsaddr); |
||||
rootfsaddr = rootfsaddr - EXTENDED_SIZE; |
||||
sscanf(buf->rootLength, "%u", &rootfslen); |
||||
sscanf(buf->kernelAddress, "%u", &kerneladdr); |
||||
kerneladdr = kerneladdr - EXTENDED_SIZE; |
||||
sscanf(buf->kernelLength, "%u", &kernellen); |
||||
sscanf(buf->totalLength, "%u", &totallen); |
||||
spareaddr = ROUNDUP(totallen,master->erasesize) + master->erasesize; |
||||
sparelen = master->size - spareaddr - master->erasesize; |
||||
// Determine number of partitions
|
||||
namelen = 8; |
||||
if (rootfslen > 0){ |
||||
nrparts++; |
||||
namelen =+ 6; |
||||
}; |
||||
if (kernellen > 0){ |
||||
nrparts++; |
||||
namelen =+ 6; |
||||
}; |
||||
if (sparelen > 0){ |
||||
nrparts++; |
||||
namelen =+ 6; |
||||
}; |
||||
// Ask kernel for more memory.
|
||||
parts = kmalloc(sizeof(*parts)*nrparts+10*nrparts, GFP_KERNEL); |
||||
if (!parts){ |
||||
vfree(buf); |
||||
return -ENOMEM; |
||||
}; |
||||
memset(parts,0,sizeof(*parts)*nrparts+10*nrparts); |
||||
// Start building partition list
|
||||
parts[curpart].name = "CFE"; |
||||
parts[curpart].offset = 0; |
||||
parts[curpart].size = master->erasesize; |
||||
curpart++; |
||||
if (kernellen > 0){ |
||||
parts[curpart].name = "Kernel"; |
||||
parts[curpart].offset = kerneladdr; |
||||
parts[curpart].size = kernellen; |
||||
curpart++; |
||||
}; |
||||
if (rootfslen > 0){ |
||||
parts[curpart].name = "Rootfs"; |
||||
parts[curpart].offset = rootfsaddr; |
||||
parts[curpart].size = rootfslen; |
||||
curpart++; |
||||
}; |
||||
if (sparelen > 0){ |
||||
parts[curpart].name = "OpenWrt"; |
||||
parts[curpart].offset = spareaddr; |
||||
parts[curpart].size = sparelen; |
||||
curpart++; |
||||
}; |
||||
parts[curpart].name = "NVRAM"; |
||||
parts[curpart].offset = master->size - master->erasesize; |
||||
parts[curpart].size = master->erasesize; |
||||
for (i = 0; i < nrparts; i++) { |
||||
printk("bcm963xx: Partition %d is %s offset %x and length %x\n", i, parts[i].name, parts[i].offset, parts[i].size); |
||||
} |
||||
*pparts = parts; |
||||
vfree(buf); |
||||
return nrparts; |
||||
}; |
||||
|
||||
#ifdef CONFIG_MTD_PARTITIONS |
||||
|
||||
static struct mtd_partition bcm963xx_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: "OpenWrt", offset: 0, size: 0, }, |
||||
{ name: NULL, }, |
||||
{ name: "bootloader", size: 0, offset: 0, mask_flags: MTD_WRITEABLE }, |
||||
{ name: "rootfs", size: 0, offset: 0}, |
||||
{ name: "jffs2", size: 5 * 0x10000, offset: 57*0x10000} |
||||
}; |
||||
|
||||
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; |
||||
static int bcm963xx_parts_size = sizeof(bcm963xx_parts) / sizeof(bcm963xx_parts[0]); |
||||
|
||||
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; |
||||
|
||||
/* 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) |
||||
static int bcm963xx_detect_cfe(struct mtd_info *master) |
||||
{ |
||||
wait_queue_head_t *wait_q = (wait_queue_head_t *)done->priv; |
||||
wake_up(wait_q); |
||||
int idoffset = 0x4e0; |
||||
static char idstring[8] = "CFE1CFE1"; |
||||
char buf[8]; |
||||
int ret; |
||||
size_t retlen; |
||||
|
||||
ret = master->read(master, idoffset, 8, &retlen, (void *)buf); |
||||
printk("bcm963xx: Read Signature value of %s\n", buf); |
||||
return strcmp(idstring,buf); |
||||
} |
||||
|
||||
static int erase_write (struct mtd_info *mtd, unsigned long pos,
|
||||
int len, const char *buf) |
||||
static int __init bcm963xx_mtd_init(void) |
||||
{ |
||||
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, writhe 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_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; |
||||
u32 i, crc = ~0; |
||||
size_t len; |
||||
struct squashfs_super_block *sb = (struct squashfs_super_block *) buf; |
||||
|
||||
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 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; |
||||
|
||||
goto found; |
||||
} |
||||
} |
||||
|
||||
printk(KERN_NOTICE |
||||
"%s: Couldn't find root filesystem\n", |
||||
mtd->name); |
||||
return -1; |
||||
|
||||
found: |
||||
if (part->size == 0) |
||||
return 0; |
||||
|
||||
if (mtd->read(mtd, part->offset, sizeof(buf), &len, buf) || len != sizeof(buf)) |
||||
return 0; |
||||
|
||||
if (*((__u32 *) buf) == SQUASHFS_MAGIC) { |
||||
printk(KERN_INFO "%s: Filesystem type: squashfs, size=0x%x\n", mtd->name, (u32) sb->bytes_used); |
||||
|
||||
/* Update the squashfs partition size based on the superblock info */ |
||||
part->size = sb->bytes_used; |
||||
len = part->offset + part->size; |
||||
len += (mtd->erasesize - 1); |
||||
len &= ~(mtd->erasesize - 1); |
||||
part->size = len - part->offset; |
||||
} else if (*((__u16 *) buf) == JFFS2_MAGIC_BITMASK) { |
||||
printk(KERN_INFO "%s: Filesystem type: jffs2\n", mtd->name); |
||||
|
||||
/* Move the squashfs outside of the trx */ |
||||
part->size = 0; |
||||
} else { |
||||
printk(KERN_INFO "%s: Filesystem type: unknown\n", mtd->name); |
||||
return 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, 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, &trx, sizeof(trx)); |
||||
if (mtd->unlock) |
||||
mtd->unlock(mtd, off, mtd->erasesize); |
||||
erase_write(mtd, off, mtd->erasesize, block); |
||||
if (mtd->sync) |
||||
mtd->sync(mtd); |
||||
kfree(block); |
||||
printk("Done\n"); |
||||
} |
||||
|
||||
return part->size; |
||||
} |
||||
|
||||
struct mtd_partition * __init |
||||
init_mtd_partitions(struct mtd_info *mtd, size_t size) |
||||
{ |
||||
int cfe_size; |
||||
|
||||
if ((cfe_size = find_cfe_size(mtd,size)) < 0) |
||||
return NULL; |
||||
|
||||
/* boot loader */ |
||||
bcm963xx_parts[0].offset = 0; |
||||
bcm963xx_parts[0].size = cfe_size; |
||||
|
||||
/* nvram */ |
||||
if (cfe_size != 384 * 1024) { |
||||
bcm963xx_parts[3].offset = size - ROUNDUP(NVRAM_SPACE, mtd->erasesize); |
||||
bcm963xx_parts[3].size = ROUNDUP(NVRAM_SPACE, mtd->erasesize); |
||||
} else { |
||||
/* nvram (old 128kb config partition on netgear wgt634u) */ |
||||
bcm963xx_parts[3].offset = bcm963xx_parts[0].size; |
||||
bcm963xx_parts[3].size = ROUNDUP(NVRAM_SPACE, mtd->erasesize); |
||||
} |
||||
|
||||
/* linux (kernel and rootfs) */ |
||||
if (cfe_size != 384 * 1024) { |
||||
bcm963xx_parts[1].offset = bcm963xx_parts[0].size; |
||||
bcm963xx_parts[1].size = bcm963xx_parts[3].offset -
|
||||
bcm963xx_parts[1].offset; |
||||
} else { |
||||
/* do not count the elf loader, which is on one block */ |
||||
bcm963xx_parts[1].offset = bcm963xx_parts[0].size +
|
||||
bcm963xx_parts[3].size + mtd->erasesize; |
||||
bcm963xx_parts[1].size = size -
|
||||
bcm963xx_parts[0].size -
|
||||
(2*bcm963xx_parts[3].size) -
|
||||
mtd->erasesize; |
||||
} |
||||
|
||||
/* find and size rootfs */ |
||||
if (find_root(mtd,size,&bcm963xx_parts[2])==0) { |
||||
/* entirely jffs2 */ |
||||
bcm963xx_parts[4].name = NULL; |
||||
bcm963xx_parts[2].size = size - bcm963xx_parts[2].offset -
|
||||
bcm963xx_parts[3].size; |
||||
} else { |
||||
/* legacy setup */ |
||||
/* calculate leftover flash, and assign it to the jffs2 partition */ |
||||
if (cfe_size != 384 * 1024) { |
||||
bcm963xx_parts[4].offset = bcm963xx_parts[2].offset +
|
||||
bcm963xx_parts[2].size; |
||||
if ((bcm963xx_parts[4].offset % mtd->erasesize) > 0) { |
||||
bcm963xx_parts[4].offset += mtd->erasesize -
|
||||
(bcm963xx_parts[4].offset % mtd->erasesize); |
||||
} |
||||
bcm963xx_parts[4].size = bcm963xx_parts[3].offset -
|
||||
bcm963xx_parts[4].offset; |
||||
} else { |
||||
bcm963xx_parts[4].offset = bcm963xx_parts[2].offset +
|
||||
bcm963xx_parts[2].size; |
||||
if ((bcm963xx_parts[4].offset % mtd->erasesize) > 0) { |
||||
bcm963xx_parts[4].offset += mtd->erasesize -
|
||||
(bcm963xx_parts[4].offset % mtd->erasesize); |
||||
} |
||||
bcm963xx_parts[4].size = size - bcm963xx_parts[3].size -
|
||||
bcm963xx_parts[4].offset; |
||||
} |
||||
} |
||||
|
||||
return bcm963xx_parts; |
||||
} |
||||
#endif |
||||
|
||||
int __init init_bcm963xx_map(void) |
||||
{ |
||||
size_t size; |
||||
int ret = 0; |
||||
#ifdef CONFIG_MTD_PARTITIONS |
||||
struct mtd_partition *parts; |
||||
int i; |
||||
#endif |
||||
|
||||
printk("BCM963xx flash init: 0x%08x 0x%08x\n", WINDOW_ADDR, WINDOW_SIZE); |
||||
bcm963xx_map.virt = ioremap_nocache(WINDOW_ADDR, WINDOW_SIZE); |
||||
|
||||
if (!bcm963xx_map.virt) { |
||||
printk("Failed to ioremap\n"); |
||||
return -EIO; |
||||
} |
||||
simple_map_init(&bcm963xx_map); |
||||
|
||||
if (!(bcm963xx_mtd = do_map_probe("cfi_probe", &bcm963xx_map))) { |
||||
printk("Failed to do_map_probe\n"); |
||||
iounmap((void *)bcm963xx_map.virt); |
||||
return -ENXIO; |
||||
} |
||||
|
||||
bcm963xx_mtd->owner = THIS_MODULE; |
||||
|
||||
size = bcm963xx_mtd->size; |
||||
|
||||
printk(KERN_NOTICE "Flash device: 0x%x at 0x%x\n", size, WINDOW_ADDR); |
||||
|
||||
#ifdef CONFIG_MTD_PARTITIONS |
||||
if (boot_loader_type == BOOT_LOADER_CFE) { |
||||
parts = init_mtd_partitions(bcm963xx_mtd, size); |
||||
for (i = 0; parts[i].name; i++); |
||||
ret = add_mtd_partitions(bcm963xx_mtd, parts, i); |
||||
if (ret) { |
||||
printk(KERN_ERR "Flash: add_mtd_partitions failed\n"); |
||||
goto fail; |
||||
} |
||||
} |
||||
else { |
||||
int parsed_nr_parts = 0; |
||||
char * part_type; |
||||
|
||||
if (bcm963xx_mtd->size > 0x00400000) { |
||||
printk("Support for extended flash memory size : 0x%08X ; ONLY 64MBIT SUPPORT\n", bcm963xx_mtd->size); |
||||
bcm963xx_map.virt = (unsigned long)EXTENDED_SIZE; |
||||
} |
||||
printk("bcm963xx: 0x%08x at 0x%08x\n", WINDOW_SIZE, WINDOW_ADDR); |
||||
bcm963xx_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE); |
||||
|
||||
if (!bcm963xx_map.virt) { |
||||
printk("bcm963xx: Failed to ioremap\n"); |
||||
return -EIO; |
||||
} |
||||
|
||||
simple_map_init(&bcm963xx_map); |
||||
|
||||
bcm963xx_mtd_info = do_map_probe("cfi_probe", &bcm963xx_map); |
||||
|
||||
if (bcm963xx_mtd_info) { |
||||
bcm963xx_mtd_info->owner = THIS_MODULE; |
||||
|
||||
//if (boot_loader_type == BOOT_CFE)
|
||||
if (bcm963xx_detect_cfe(bcm963xx_mtd_info) == 0) |
||||
{ |
||||
int parsed_nr_parts = 0; |
||||
char * part_type; |
||||
printk("bcm963xx: CFE bootloader detected\n"); |
||||
//add_mtd_device(bcm963xx_mtd_info);
|
||||
//add_mtd_partitions(bcm963xx_mtd_info, bcm963xx_parts, bcm963xx_parts_size);
|
||||
if (parsed_nr_parts == 0) { |
||||
int ret = parse_cfe_partitions(bcm963xx_mtd_info, &parsed_parts); |
||||
if (ret > 0) { |
||||
part_type = "CFE"; |
||||
parsed_nr_parts = ret; |
||||
} |
||||
} |
||||
add_mtd_partitions(bcm963xx_mtd_info, parsed_parts, parsed_nr_parts); |
||||
return 0; |
||||
} |
||||
else |
||||
{ |
||||
int parsed_nr_parts = 0; |
||||
char * part_type; |
||||
|
||||
if (bcm963xx_mtd_info->size > 0x00400000) { |
||||
printk("Support for extended flash memory size : 0x%08X ; ONLY 64MBIT SUPPORT\n", bcm963xx_mtd_info->size); |
||||
bcm963xx_map.virt = (unsigned long)(EXTENDED_SIZE); |
||||
} |
||||
|
||||
#ifdef CONFIG_MTD_REDBOOT_PARTS |
||||
if (parsed_nr_parts == 0) { |
||||
int ret = parse_redboot_partitions(bcm963xx_mtd, &parsed_parts, 0); |
||||
if (ret > 0) { |
||||
part_type = "RedBoot"; |
||||
parsed_nr_parts = ret; |
||||
} |
||||
} |
||||
#endif |
||||
add_mtd_partitions(bcm963xx_mtd, parsed_parts, parsed_nr_parts);
|
||||
if (parsed_nr_parts == 0) { |
||||
int ret = parse_redboot_partitions(bcm963xx_mtd_info, &parsed_parts, 0); |
||||
if (ret > 0) { |
||||
part_type = "RedBoot"; |
||||
parsed_nr_parts = ret; |
||||
} |
||||
} |
||||
#endif |
||||
} |
||||
return 0; |
||||
add_mtd_partitions(bcm963xx_mtd_info, parsed_parts, parsed_nr_parts); |
||||
|
||||
fail: |
||||
if (bcm963xx_mtd) |
||||
map_destroy(bcm963xx_mtd); |
||||
if (bcm963xx_map.virt) |
||||
iounmap((void *)bcm963xx_map.virt); |
||||
bcm963xx_map.virt = 0; |
||||
return ret; |
||||
return 0; |
||||
} |
||||
} |
||||
iounmap(bcm963xx_map.virt); |
||||
return -ENXIO; |
||||
} |
||||
|
||||
void __exit cleanup_bcm963xx_map(void) |
||||
static void __exit bcm963xx_mtd_cleanup(void) |
||||
{ |
||||
#ifdef CONFIG_MTD_PARTITIONS |
||||
del_mtd_partitions(bcm963xx_mtd); |
||||
#endif |
||||
map_destroy(bcm963xx_mtd); |
||||
iounmap((void *)bcm963xx_map.virt); |
||||
if (bcm963xx_mtd_info) { |
||||
del_mtd_partitions(bcm963xx_mtd_info); |
||||
map_destroy(bcm963xx_mtd_info); |
||||
} |
||||
|
||||
if (bcm963xx_map.virt) { |
||||
iounmap(bcm963xx_map.virt); |
||||
bcm963xx_map.virt = 0; |
||||
} |
||||
} |
||||
|
||||
module_init(init_bcm963xx_map); |
||||
module_exit(cleanup_bcm963xx_map); |
||||
module_init(bcm963xx_mtd_init); |
||||
module_exit(bcm963xx_mtd_cleanup); |
||||
|
||||
MODULE_LICENSE("GPL"); |
||||
MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org> Mike Albon <malbon@openwrt.org>"); |
||||
|
Loading…
Reference in new issue