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brcm47xx: prepare brcm47xx patches for sending to mainline.

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@22296 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
hauke
2010-07-19 20:25:20 +00:00
parent 03685da10d
commit 9fe2a2d554
57 changed files with 4172 additions and 1658 deletions
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229
target/linux/brcm47xx/files/arch/mips/bcm47xx/cfe_env.c
View File

@@ -1,229 +0,0 @@
/*
* CFE environment variable access
*
* Copyright 2001-2003, Broadcom Corporation
* Copyright 2006, Felix Fietkau <nbd@openwrt.org>
*
* 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.
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#define NVRAM_SIZE (0x1ff0)
static char _nvdata[NVRAM_SIZE];
static char _valuestr[256];
/*
* TLV types. These codes are used in the "type-length-value"
* encoding of the items stored in the NVRAM device (flash or EEPROM)
*
* The layout of the flash/nvram is as follows:
*
* <type> <length> <data ...> <type> <length> <data ...> <type_end>
*
* The type code of "ENV_TLV_TYPE_END" marks the end of the list.
* The "length" field marks the length of the data section, not
* including the type and length fields.
*
* Environment variables are stored as follows:
*
* <type_env> <length> <flags> <name> = <value>
*
* If bit 0 (low bit) is set, the length is an 8-bit value.
* If bit 0 (low bit) is clear, the length is a 16-bit value
*
* Bit 7 set indicates "user" TLVs. In this case, bit 0 still
* indicates the size of the length field.
*
* Flags are from the constants below:
*
*/
#define ENV_LENGTH_16BITS 0x00 /* for low bit */
#define ENV_LENGTH_8BITS 0x01
#define ENV_TYPE_USER 0x80
#define ENV_CODE_SYS(n,l) (((n)<<1)|(l))
#define ENV_CODE_USER(n,l) ((((n)<<1)|(l)) | ENV_TYPE_USER)
/*
* The actual TLV types we support
*/
#define ENV_TLV_TYPE_END 0x00
#define ENV_TLV_TYPE_ENV ENV_CODE_SYS(0,ENV_LENGTH_8BITS)
/*
* Environment variable flags
*/
#define ENV_FLG_NORMAL 0x00 /* normal read/write */
#define ENV_FLG_BUILTIN 0x01 /* builtin - not stored in flash */
#define ENV_FLG_READONLY 0x02 /* read-only - cannot be changed */
#define ENV_FLG_MASK 0xFF /* mask of attributes we keep */
#define ENV_FLG_ADMIN 0x100 /* lets us internally override permissions */
/* *********************************************************************
* _nvram_read(buffer,offset,length)
*
* Read data from the NVRAM device
*
* Input parameters:
* buffer - destination buffer
* offset - offset of data to read
* length - number of bytes to read
*
* Return value:
* number of bytes read, or <0 if error occured
********************************************************************* */
static int
_nvram_read(unsigned char *nv_buf, unsigned char *buffer, int offset, int length)
{
int i;
if (offset > NVRAM_SIZE)
return -1;
for ( i = 0; i < length; i++) {
buffer[i] = ((volatile unsigned char*)nv_buf)[offset + i];
}
return length;
}
static char*
_strnchr(const char *dest,int c,size_t cnt)
{
while (*dest && (cnt > 0)) {
if (*dest == c) return (char *) dest;
dest++;
cnt--;
}
return NULL;
}
/*
* Core support API: Externally visible.
*/
/*
* Get the value of an NVRAM variable
* @param name name of variable to get
* @return value of variable or NULL if undefined
*/
char*
cfe_env_get(unsigned char *nv_buf, char* name)
{
int size;
unsigned char *buffer;
unsigned char *ptr;
unsigned char *envval;
unsigned int reclen;
unsigned int rectype;
int offset;
int flg;
if (!strcmp(name, "nvram_type"))
return "cfe";
size = NVRAM_SIZE;
buffer = &_nvdata[0];
ptr = buffer;
offset = 0;
/* Read the record type and length */
if (_nvram_read(nv_buf, ptr,offset,1) != 1) {
goto error;
}
while ((*ptr != ENV_TLV_TYPE_END) && (size > 1)) {
/* Adjust pointer for TLV type */
rectype = *(ptr);
offset++;
size--;
/*
* Read the length. It can be either 1 or 2 bytes
* depending on the code
*/
if (rectype & ENV_LENGTH_8BITS) {
/* Read the record type and length - 8 bits */
if (_nvram_read(nv_buf, ptr,offset,1) != 1) {
goto error;
}
reclen = *(ptr);
size--;
offset++;
}
else {
/* Read the record type and length - 16 bits, MSB first */
if (_nvram_read(nv_buf, ptr,offset,2) != 2) {
goto error;
}
reclen = (((unsigned int) *(ptr)) << 8) + (unsigned int) *(ptr+1);
size -= 2;
offset += 2;
}
if (reclen > size)
break; /* should not happen, bad NVRAM */
switch (rectype) {
case ENV_TLV_TYPE_ENV:
/* Read the TLV data */
if (_nvram_read(nv_buf, ptr,offset,reclen) != reclen)
goto error;
flg = *ptr++;
envval = (unsigned char *) _strnchr(ptr,'=',(reclen-1));
if (envval) {
*envval++ = '\0';
memcpy(_valuestr,envval,(reclen-1)-(envval-ptr));
_valuestr[(reclen-1)-(envval-ptr)] = '\0';
#if 0
printk(KERN_INFO "NVRAM:%s=%s\n", ptr, _valuestr);
#endif
if(!strcmp(ptr, name)){
return _valuestr;
}
if((strlen(ptr) > 1) && !strcmp(&ptr[1], name))
return _valuestr;
}
break;
default:
/* Unknown TLV type, skip it. */
break;
}
/*
* Advance to next TLV
*/
size -= (int)reclen;
offset += reclen;
/* Read the next record type */
ptr = buffer;
if (_nvram_read(nv_buf, ptr,offset,1) != 1)
goto error;
}
error:
return NULL;
}

37
target/linux/brcm47xx/files/arch/mips/bcm47xx/include/nvram.h
View File

@@ -1,37 +0,0 @@
/*
* Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
*
* 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.
*/
#ifndef __NVRAM_H
#define __NVRAM_H
struct nvram_header {
u32 magic;
u32 len;
u32 crc_ver_init; /* 0:7 crc, 8:15 ver, 16:31 sdram_init */
u32 config_refresh; /* 0:15 sdram_config, 16:31 sdram_refresh */
u32 config_ncdl; /* ncdl values for memc */
};
struct nvram_tuple {
char *name;
char *value;
struct nvram_tuple *next;
};
#define NVRAM_HEADER 0x48534C46 /* 'FLSH' */
#define NVRAM_VERSION 1
#define NVRAM_HEADER_SIZE 20
#define NVRAM_SPACE 0x8000
#define NVRAM_MAX_VALUE_LEN 255
#define NVRAM_MAX_PARAM_LEN 64
char *nvram_get(const char *name);
#endif

125
target/linux/brcm47xx/files/arch/mips/bcm47xx/nvram.c
View File

@@ -1,125 +0,0 @@
/*
* BCM947xx nvram variable access
*
* Copyright 2005, Broadcom Corporation
* Copyright 2006, Felix Fietkau <nbd@openwrt.org>
*
* 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.
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/ssb/ssb.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/interrupt.h>
#include <linux/spinlock.h>
#include <linux/slab.h>
#include <asm/byteorder.h>
#include <asm/bootinfo.h>
#include <asm/addrspace.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <nvram.h>
#define MB * 1048576
extern struct ssb_bus ssb;
static char nvram_buf[NVRAM_SPACE];
static int cfe_env;
extern char *cfe_env_get(char *nv_buf, const char *name);
/* Probe for NVRAM header */
static void __init early_nvram_init(void)
{
struct ssb_mipscore *mcore = &ssb.mipscore;
struct nvram_header *header;
int i;
u32 base, lim, off;
u32 *src, *dst;
base = mcore->flash_window;
lim = mcore->flash_window_size;
cfe_env = 0;
/* XXX: hack for supporting the CFE environment stuff on WGT634U */
if (lim >= 8 MB) {
src = (u32 *) KSEG1ADDR(base + 8 MB - 0x2000);
dst = (u32 *) nvram_buf;
if ((*src & 0xff00ff) == 0x000001) {
printk("early_nvram_init: WGT634U NVRAM found.\n");
for (i = 0; i < 0x1ff0; i++) {
if (*src == 0xFFFFFFFF)
break;
*dst++ = *src++;
}
cfe_env = 1;
return;
}
}
off = 0x20000;
while (off <= lim) {
/* Windowed flash access */
header = (struct nvram_header *) KSEG1ADDR(base + off - NVRAM_SPACE);
if (header->magic == NVRAM_HEADER)
goto found;
off <<= 1;
}
/* Try embedded NVRAM at 4 KB and 1 KB as last resorts */
header = (struct nvram_header *) KSEG1ADDR(base + 4096);
if (header->magic == NVRAM_HEADER)
goto found;
header = (struct nvram_header *) KSEG1ADDR(base + 1024);
if (header->magic == NVRAM_HEADER)
goto found;
return;
found:
src = (u32 *) header;
dst = (u32 *) nvram_buf;
for (i = 0; i < sizeof(struct nvram_header); i += 4)
*dst++ = *src++;
for (; i < header->len && i < NVRAM_SPACE; i += 4)
*dst++ = le32_to_cpu(*src++);
}
char *nvram_get(const char *name)
{
char *var, *value, *end, *eq;
if (!name)
return NULL;
if (!nvram_buf[0])
early_nvram_init();
if (cfe_env)
return cfe_env_get(nvram_buf, name);
/* Look for name=value and return value */
var = &nvram_buf[sizeof(struct nvram_header)];
end = nvram_buf + sizeof(nvram_buf) - 2;
end[0] = end[1] = '\0';
for (; *var; var = value + strlen(value) + 1) {
if (!(eq = strchr(var, '=')))
break;
value = eq + 1;
if ((eq - var) == strlen(name) && strncmp(var, name, (eq - var)) == 0)
return value;
}
return NULL;
}
EXPORT_SYMBOL(nvram_get);

26
target/linux/brcm47xx/files/arch/mips/include/asm/mach-bcm47xx/kernel-entry-init.h
View File

@@ -1,26 +0,0 @@
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2005 Embedded Alley Solutions, Inc
* Copyright (C) 2005 Ralf Baechle (ralf@linux-mips.org)
* Copyright (C) 2006 Michael Buesch
*/
#ifndef __ASM_MACH_GENERIC_KERNEL_ENTRY_H
#define __ASM_MACH_GENERIC_KERNEL_ENTRY_H
/* Intentionally empty macro, used in head.S. Override in
* arch/mips/mach-xxx/kernel-entry-init.h when necessary.
*/
.macro kernel_entry_setup
.endm
/*
* Do SMP slave processor setup necessary before we can savely execute C code.
*/
.macro smp_slave_setup
.endm
#endif /* __ASM_MACH_GENERIC_KERNEL_ENTRY_H */

474
target/linux/brcm47xx/files/drivers/mtd/maps/bcm47xx-flash.c
View File

@@ -1,474 +0,0 @@
/*
* Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
* Copyright (C) 2005 Waldemar Brodkorb <wbx@openwrt.org>
* Copyright (C) 2004 Florian Schirmer (jolt@tuxbox.org)
*
* original functions for finding root filesystem from Mike Baker
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*
* Copyright 2001-2003, Broadcom Corporation
* All Rights Reserved.
*
* THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
* KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
* SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
*
* Flash mapping for BCM947XX boards
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/wait.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/map.h>
#ifdef CONFIG_MTD_PARTITIONS
#include <linux/mtd/partitions.h>
#endif
#include <linux/crc32.h>
#ifdef CONFIG_SSB
#include <linux/ssb/ssb.h>
#endif
#include <asm/io.h>
#define TRX_MAGIC 0x30524448 /* "HDR0" */
#define TRX_VERSION 1
#define TRX_MAX_LEN 0x3A0000
#define TRX_NO_HEADER 1 /* Do not write TRX header */
#define TRX_GZ_FILES 0x2 /* Contains up to TRX_MAX_OFFSET individual gzip files */
#define TRX_MAX_OFFSET 3
struct trx_header {
u32 magic; /* "HDR0" */
u32 len; /* Length of file including header */
u32 crc32; /* 32-bit CRC from flag_version to end of file */
u32 flag_version; /* 0:15 flags, 16:31 version */
u32 offsets[TRX_MAX_OFFSET]; /* Offsets of partitions from start of header */
};
#define ROUNDUP(x, y) ((((x)+((y)-1))/(y))*(y))
#define NVRAM_SPACE 0x8000
#define WINDOW_ADDR 0x1fc00000
#define WINDOW_SIZE 0x400000
#define BUSWIDTH 2
#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;
/* 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, 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_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;
u32 i, crc = ~0;
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 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;
/* 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, 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;
int dual_image_offset = 0;
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;
} 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;
}
/* 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;
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);