Use the bcm947xx mtd driver instead
SVN-Revision: 6624
This commit is contained in:
Florian Fainelli
parent
6726055df0
commit
4b8150a056
1 changed files with 431 additions and 203 deletions
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@ -1,234 +1,462 @@
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/*
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* Flash device on the ADM5120 board
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* Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
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* Copyright (C) 2005 Waldemar Brodkorb <wbx@openwrt.org>
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* Copyright (C) 2004 Florian Schirmer (jolt@tuxbox.org)
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*
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* Copyright Florian Fainelli <florian@openwrt.org>
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*
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* original functions for finding root filesystem from Mike Baker
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version
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* 2 as published by the Free Software Foundation.
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* Copyright 2001-2003, Broadcom Corporation
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* All Rights Reserved.
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*
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* THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
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* KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
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* SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
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*
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* Flash mapping for ADM5120 boards
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*/
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#include <linux/autoconf.h>
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/wait.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/map.h>
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#ifdef CONFIG_MTD_PARTITIONS
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#include <linux/mtd/partitions.h>
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#include <linux/vmalloc.h>
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#define FLASH_PHYS_ADDR 0x1FC00000
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#define FLASH_SIZE 0x400000
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#define IMAGE_LEN 10 /* Length of Length Field */
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#define ADDRESS_LEN 12 /* Length of Address field */
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#define EXTENDED_SIZE 0xBFC00000 /* Extended flash address */
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#define ROUNDUP(x, y) ((((x)+((y)-1))/(y))*(y))
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static struct mtd_info *adm5120_mtd;
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static struct mtd_partition *parsed_parts;
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static struct map_info adm5120_mtd_map = {
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.name = "adm5120",
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.size = FLASH_SIZE,
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.bankwidth = 2,
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.phys = FLASH_PHYS_ADDR,
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};
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static int parse_cfe_partitions( struct mtd_info *master, struct mtd_partition **pparts)
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{
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int nrparts = 2, curpart = 0; // CFE and NVRAM always present.
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struct adm5120_cfe_map {
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unsigned char tagVersion[4]; // Version of the image tag
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unsigned char sig_1[20]; // Company Line 1
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unsigned char sig_2[14]; // Company Line 2
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unsigned char chipid[6]; // Chip this image is for
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unsigned char boardid[16]; // Board name
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unsigned char bigEndian[2]; // Map endianness -- 1 BE 0 LE
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unsigned char totalLength[IMAGE_LEN]; //Total length of image
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unsigned char cfeAddress[ADDRESS_LEN]; // Address in memory of CFE
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unsigned char cfeLength[IMAGE_LEN]; // Size of CFE
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unsigned char rootAddress[ADDRESS_LEN]; // Address in memory of rootfs
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unsigned char rootLength[IMAGE_LEN]; // Size of rootfs
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unsigned char kernelAddress[ADDRESS_LEN]; // Address in memory of kernel
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unsigned char kernelLength[IMAGE_LEN]; // Size of kernel
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unsigned char dualImage[2]; // Unused at present
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unsigned char inactiveFlag[2]; // Unused at present
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unsigned char reserved1[74]; // Reserved area not in use
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unsigned char imageCRC[4]; // CRC32 of images
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unsigned char reserved2[16]; // Unused at present
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unsigned char headerCRC[4]; // CRC32 of header excluding tagVersion
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unsigned char reserved3[16]; // Unused at present
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} *buf;
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struct mtd_partition *parts;
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int ret;
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size_t retlen;
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unsigned int rootfsaddr, kerneladdr, spareaddr;
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unsigned int rootfslen, kernellen, sparelen, totallen;
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int namelen = 0;
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int i;
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// Allocate memory for buffer
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buf = vmalloc(sizeof(struct adm5120_cfe_map));
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if (!buf)
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return -ENOMEM;
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// Get the tag
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ret = master->read(master,master->erasesize,sizeof(struct adm5120_cfe_map), &retlen, (void *)buf);
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if (retlen != sizeof(struct adm5120_cfe_map)){
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vfree(buf);
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return -EIO;
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};
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printk("adm5120: CFE boot tag found with version %s and board type %s.\n",buf->tagVersion,buf->boardid);
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// Get the values and calculate
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sscanf(buf->rootAddress,"%u", &rootfsaddr);
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rootfsaddr = rootfsaddr - EXTENDED_SIZE;
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sscanf(buf->rootLength, "%u", &rootfslen);
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sscanf(buf->kernelAddress, "%u", &kerneladdr);
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kerneladdr = kerneladdr - EXTENDED_SIZE;
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sscanf(buf->kernelLength, "%u", &kernellen);
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sscanf(buf->totalLength, "%u", &totallen);
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spareaddr = ROUNDUP(totallen,master->erasesize) + master->erasesize;
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sparelen = master->size - spareaddr - master->erasesize;
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// Determine number of partitions
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namelen = 8;
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if (rootfslen > 0){
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nrparts++;
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namelen =+ 6;
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};
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if (kernellen > 0){
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nrparts++;
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namelen =+ 6;
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};
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if (sparelen > 0){
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nrparts++;
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namelen =+ 6;
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};
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// Ask kernel for more memory.
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parts = kmalloc(sizeof(*parts)*nrparts+10*nrparts, GFP_KERNEL);
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if (!parts){
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vfree(buf);
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return -ENOMEM;
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};
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memset(parts,0,sizeof(*parts)*nrparts+10*nrparts);
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// Start building partition list
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parts[curpart].name = "CFE";
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parts[curpart].offset = 0;
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parts[curpart].size = master->erasesize;
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curpart++;
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if (kernellen > 0) {
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parts[curpart].name = "Kernel";
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parts[curpart].offset = kerneladdr;
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parts[curpart].size = kernellen;
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curpart++;
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};
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if (rootfslen > 0) {
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parts[curpart].name = "Rootfs";
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parts[curpart].offset = rootfsaddr;
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parts[curpart].size = rootfslen;
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curpart++;
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};
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if (sparelen > 0){
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parts[curpart].name = "OpenWrt";
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parts[curpart].offset = spareaddr;
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parts[curpart].size = sparelen;
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curpart++;
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};
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parts[curpart].name = "NVRAM";
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parts[curpart].offset = master->size - master->erasesize;
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parts[curpart].size = master->erasesize;
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for (i = 0; i < nrparts; i++) {
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printk("adm5120: Partition %d is %s offset %x and length %x\n", i, parts[i].name, parts[i].offset, parts[i].size);
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}
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*pparts = parts;
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vfree(buf);
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return nrparts;
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};
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static int adm5120_detect_cfe(struct mtd_info *master)
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{
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int idoffset = 0x4e0;
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#ifdef CONFIG_CPU_BIG_ENDIAN
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static char idstring[8] = "CFE1CFE1";
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#else
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static char idstring[8] = "1EFC1EFC";
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#endif
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char buf[8];
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int ret;
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size_t retlen;
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#include <linux/squashfs_fs.h>
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#include <linux/jffs2.h>
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#include <linux/crc32.h>
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#ifdef CONFIG_SSB
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#include <linux/ssb/ssb.h>
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#endif
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#include <asm/io.h>
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#define TRX_MAGIC 0x30524448 /* "HDR0" */
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#define TRX_VERSION 1
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#define TRX_MAX_LEN 0x3A0000
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#define TRX_NO_HEADER 1 /* Do not write TRX header */
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#define TRX_GZ_FILES 0x2 /* Contains up to TRX_MAX_OFFSET individual gzip files */
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#define TRX_MAX_OFFSET 3
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struct trx_header {
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u32 magic; /* "HDR0" */
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u32 len; /* Length of file including header */
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u32 crc32; /* 32-bit CRC from flag_version to end of file */
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u32 flag_version; /* 0:15 flags, 16:31 version */
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u32 offsets[TRX_MAX_OFFSET]; /* Offsets of partitions from start of header */
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};
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#define ROUNDUP(x, y) ((((x)+((y)-1))/(y))*(y))
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#define NVRAM_SPACE 0x8000
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#define WINDOW_ADDR 0x1fc00000
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#define WINDOW_SIZE 0x400000
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#define BUSWIDTH 2
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#ifdef CONFIG_SSB
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extern struct ssb_bus ssb;
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#endif
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static struct mtd_info *adm5120_mtd;
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static struct map_info adm5120_map = {
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name: "adm5120 physically mapped flash",
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size: WINDOW_SIZE,
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bankwidth: BUSWIDTH,
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phys: WINDOW_ADDR,
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};
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#ifdef CONFIG_MTD_PARTITIONS
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static struct mtd_partition adm5120_parts[] = {
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{ name: "cfe", offset: 0, size: 0, mask_flags: MTD_WRITEABLE, },
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{ name: "linux", offset: 0, size: 0, },
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{ name: "rootfs", offset: 0, size: 0, },
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{ name: "nvram", offset: 0, size: 0, },
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{ name: "OpenWrt", offset: 0, size: 0, },
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{ name: NULL, },
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};
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static int __init
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find_cfe_size(struct mtd_info *mtd, size_t size)
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{
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struct trx_header *trx;
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unsigned char buf[512];
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int off;
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size_t len;
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int blocksize;
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trx = (struct trx_header *) buf;
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blocksize = mtd->erasesize;
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if (blocksize < 0x10000)
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blocksize = 0x10000;
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for (off = (128*1024); off < size; off += blocksize) {
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memset(buf, 0xe5, sizeof(buf));
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/*
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* Read into buffer
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*/
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if (mtd->read(mtd, off, sizeof(buf), &len, buf) ||
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len != sizeof(buf))
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continue;
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/* found a TRX header */
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if (le32_to_cpu(trx->magic) == TRX_MAGIC) {
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goto found;
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}
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}
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printk(KERN_NOTICE
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"%s: Couldn't find bootloader size\n",
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mtd->name);
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return -1;
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found:
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printk(KERN_NOTICE "bootloader size: %d\n", off);
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return off;
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ret = master->read(master, idoffset, 8, &retlen, (void *)buf);
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printk("adm5120: Read Signature value of %s\n", buf);
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return strcmp(idstring,buf);
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}
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static int __init adm5120_mtd_init(void)
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/*
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* Copied from mtdblock.c
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*
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* Cache stuff...
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*
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* Since typical flash erasable sectors are much larger than what Linux's
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* buffer cache can handle, we must implement read-modify-write on flash
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* sectors for each block write requests. To avoid over-erasing flash sectors
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* and to speed things up, we locally cache a whole flash sector while it is
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* being written to until a different sector is required.
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*/
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static void erase_callback(struct erase_info *done)
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{
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printk(KERN_INFO "ADM5120 board flash (0x%08x at 0x%08x)\n", FLASH_SIZE,
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FLASH_PHYS_ADDR);
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wait_queue_head_t *wait_q = (wait_queue_head_t *)done->priv;
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wake_up(wait_q);
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}
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adm5120_mtd_map.virt = ioremap(FLASH_PHYS_ADDR, FLASH_SIZE);
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static int erase_write (struct mtd_info *mtd, unsigned long pos,
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int len, const char *buf)
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{
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struct erase_info erase;
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DECLARE_WAITQUEUE(wait, current);
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wait_queue_head_t wait_q;
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size_t retlen;
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int ret;
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if (!adm5120_mtd_map.virt) {
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printk("ADM5120: failed to ioremap\n");
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return -EIO;
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/*
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* First, let's erase the flash block.
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*/
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init_waitqueue_head(&wait_q);
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erase.mtd = mtd;
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erase.callback = erase_callback;
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erase.addr = pos;
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erase.len = len;
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erase.priv = (u_long)&wait_q;
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set_current_state(TASK_INTERRUPTIBLE);
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add_wait_queue(&wait_q, &wait);
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ret = mtd->erase(mtd, &erase);
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if (ret) {
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set_current_state(TASK_RUNNING);
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remove_wait_queue(&wait_q, &wait);
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printk (KERN_WARNING "erase of region [0x%lx, 0x%x] "
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"on \"%s\" failed\n",
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pos, len, mtd->name);
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return ret;
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}
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simple_map_init(&adm5120_mtd_map);
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adm5120_mtd = do_map_probe("cfi_probe", &adm5120_mtd_map);
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schedule(); /* Wait for erase to finish. */
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remove_wait_queue(&wait_q, &wait);
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if (adm5120_mtd) {
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adm5120_mtd->owner = THIS_MODULE;
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if (adm5120_detect_cfe(adm5120_mtd) == 0)
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{
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int parsed_nr_parts = 0;
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char * part_type;
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/*
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* Next, writhe data to flash.
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*/
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printk("adm5120: CFE bootloader detected\n");
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if (parsed_nr_parts == 0) {
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int ret = parse_cfe_partitions(adm5120_mtd, &parsed_parts);
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if (ret > 0) {
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part_type = "CFE";
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parsed_nr_parts = ret;
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}
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}
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add_mtd_partitions(adm5120_mtd, parsed_parts, parsed_nr_parts);
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return 0;
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} else {
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add_mtd_device(adm5120_mtd);
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ret = mtd->write (mtd, pos, len, &retlen, buf);
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if (ret)
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return ret;
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if (retlen != len)
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return -EIO;
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return 0;
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}
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static int __init
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find_root(struct mtd_info *mtd, size_t size, struct mtd_partition *part)
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{
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struct trx_header trx, *trx2;
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unsigned char buf[512], *block;
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int off, blocksize;
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u32 i, crc = ~0;
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size_t len;
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struct squashfs_super_block *sb = (struct squashfs_super_block *) buf;
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blocksize = mtd->erasesize;
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if (blocksize < 0x10000)
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blocksize = 0x10000;
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for (off = (128*1024); off < size; off += blocksize) {
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memset(&trx, 0xe5, sizeof(trx));
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/*
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* Read into buffer
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*/
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if (mtd->read(mtd, off, sizeof(trx), &len, (char *) &trx) ||
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len != sizeof(trx))
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continue;
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/* found a TRX header */
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if (le32_to_cpu(trx.magic) == TRX_MAGIC) {
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part->offset = le32_to_cpu(trx.offsets[2]) ? :
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le32_to_cpu(trx.offsets[1]);
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part->size = le32_to_cpu(trx.len);
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part->size -= part->offset;
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part->offset += off;
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goto found;
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}
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}
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printk(KERN_NOTICE
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"%s: Couldn't find root filesystem\n",
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mtd->name);
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return -1;
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found:
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if (part->size == 0)
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return 0;
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if (mtd->read(mtd, part->offset, sizeof(buf), &len, buf) || len != sizeof(buf))
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return 0;
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if (*((__u32 *) buf) == SQUASHFS_MAGIC) {
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printk(KERN_INFO "%s: Filesystem type: squashfs, size=0x%x\n", mtd->name, (u32) sb->bytes_used);
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/* Update the squashfs partition size based on the superblock info */
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part->size = sb->bytes_used;
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len = part->offset + part->size;
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len += (mtd->erasesize - 1);
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len &= ~(mtd->erasesize - 1);
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part->size = len - part->offset;
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} 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;
|
||||
}
|
||||
iounmap(adm5120_mtd);
|
||||
return -ENXIO;
|
||||
}
|
||||
|
||||
static void __exit adm5120_mtd_exit(void)
|
||||
{
|
||||
if (adm5120_mtd) {
|
||||
del_mtd_device(adm5120_mtd);
|
||||
map_destroy(adm5120_mtd);
|
||||
}
|
||||
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;
|
||||
|
||||
if (adm5120_mtd_map.virt) {
|
||||
iounmap(adm5120_mtd_map.virt);
|
||||
adm5120_mtd_map.virt = 0;
|
||||
/* 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;
|
||||
}
|
||||
|
||||
module_init(adm5120_mtd_init);
|
||||
module_exit(adm5120_mtd_exit);
|
||||
struct mtd_partition * __init
|
||||
init_mtd_partitions(struct mtd_info *mtd, size_t size)
|
||||
{
|
||||
int cfe_size;
|
||||
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
|
||||
MODULE_DESCRIPTION("MTD map driver for ADM5120 boards");
|
||||
if ((cfe_size = find_cfe_size(mtd,size)) < 0)
|
||||
return NULL;
|
||||
|
||||
/* boot loader */
|
||||
adm5120_parts[0].offset = 0;
|
||||
adm5120_parts[0].size = cfe_size;
|
||||
|
||||
/* nvram */
|
||||
if (cfe_size != 384 * 1024) {
|
||||
adm5120_parts[3].offset = size - ROUNDUP(NVRAM_SPACE, mtd->erasesize);
|
||||
adm5120_parts[3].size = ROUNDUP(NVRAM_SPACE, mtd->erasesize);
|
||||
} else {
|
||||
/* nvram (old 128kb config partition on netgear wgt634u) */
|
||||
adm5120_parts[3].offset = adm5120_parts[0].size;
|
||||
adm5120_parts[3].size = ROUNDUP(NVRAM_SPACE, mtd->erasesize);
|
||||
}
|
||||
|
||||
/* linux (kernel and rootfs) */
|
||||
if (cfe_size != 384 * 1024) {
|
||||
adm5120_parts[1].offset = adm5120_parts[0].size;
|
||||
adm5120_parts[1].size = adm5120_parts[3].offset -
|
||||
adm5120_parts[1].offset;
|
||||
} else {
|
||||
/* do not count the elf loader, which is on one block */
|
||||
adm5120_parts[1].offset = adm5120_parts[0].size +
|
||||
adm5120_parts[3].size + mtd->erasesize;
|
||||
adm5120_parts[1].size = size -
|
||||
adm5120_parts[0].size -
|
||||
(2*adm5120_parts[3].size) -
|
||||
mtd->erasesize;
|
||||
}
|
||||
|
||||
/* find and size rootfs */
|
||||
if (find_root(mtd,size,&adm5120_parts[2])==0) {
|
||||
/* entirely jffs2 */
|
||||
adm5120_parts[4].name = NULL;
|
||||
adm5120_parts[2].size = size - adm5120_parts[2].offset -
|
||||
adm5120_parts[3].size;
|
||||
} else {
|
||||
/* legacy setup */
|
||||
/* calculate leftover flash, and assign it to the jffs2 partition */
|
||||
if (cfe_size != 384 * 1024) {
|
||||
adm5120_parts[4].offset = adm5120_parts[2].offset +
|
||||
adm5120_parts[2].size;
|
||||
if ((adm5120_parts[4].offset % mtd->erasesize) > 0) {
|
||||
adm5120_parts[4].offset += mtd->erasesize -
|
||||
(adm5120_parts[4].offset % mtd->erasesize);
|
||||
}
|
||||
adm5120_parts[4].size = adm5120_parts[3].offset -
|
||||
adm5120_parts[4].offset;
|
||||
} else {
|
||||
adm5120_parts[4].offset = adm5120_parts[2].offset +
|
||||
adm5120_parts[2].size;
|
||||
if ((adm5120_parts[4].offset % mtd->erasesize) > 0) {
|
||||
adm5120_parts[4].offset += mtd->erasesize -
|
||||
(adm5120_parts[4].offset % mtd->erasesize);
|
||||
}
|
||||
adm5120_parts[4].size = size - adm5120_parts[3].size -
|
||||
adm5120_parts[4].offset;
|
||||
}
|
||||
}
|
||||
|
||||
return adm5120_parts;
|
||||
}
|
||||
#endif
|
||||
|
||||
int __init init_adm5120_map(void)
|
||||
{
|
||||
#ifdef CONFIG_SSB
|
||||
struct ssb_mipscore *mcore = &ssb.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("adm5120 : flash init: 0x%08x 0x%08x\n", window, window_size);
|
||||
adm5120_map.phys = window;
|
||||
adm5120_map.size = window_size;
|
||||
adm5120_map.virt = ioremap_nocache(window, window_size);
|
||||
#else
|
||||
printk("adm5120 : flash init : 0x%08x 0x%08x\n", WINDOW_ADDR, WINDOW_SIZE);
|
||||
adm5120_map.virt = ioremap_nocache(WINDOW_ADDR, WINDOW_SIZE);
|
||||
#endif
|
||||
|
||||
if (!adm5120_map.virt) {
|
||||
printk("Failed to ioremap\n");
|
||||
return -EIO;
|
||||
}
|
||||
simple_map_init(&adm5120_map);
|
||||
|
||||
if (!(adm5120_mtd = do_map_probe("cfi_probe", &adm5120_map))) {
|
||||
printk("Failed to do_map_probe\n");
|
||||
iounmap((void *)adm5120_map.virt);
|
||||
return -ENXIO;
|
||||
}
|
||||
|
||||
adm5120_mtd->owner = THIS_MODULE;
|
||||
|
||||
size = adm5120_mtd->size;
|
||||
|
||||
printk(KERN_NOTICE "Flash device: 0x%x at 0x%x\n", size, WINDOW_ADDR);
|
||||
|
||||
#ifdef CONFIG_MTD_PARTITIONS
|
||||
parts = init_mtd_partitions(adm5120_mtd, size);
|
||||
for (i = 0; parts[i].name; i++);
|
||||
ret = add_mtd_partitions(adm5120_mtd, parts, i);
|
||||
if (ret) {
|
||||
printk(KERN_ERR "Flash: add_mtd_partitions failed\n");
|
||||
goto fail;
|
||||
}
|
||||
#endif
|
||||
return 0;
|
||||
|
||||
fail:
|
||||
if (adm5120_mtd)
|
||||
map_destroy(adm5120_mtd);
|
||||
if (adm5120_map.virt)
|
||||
iounmap((void *)adm5120_map.virt);
|
||||
adm5120_map.virt = 0;
|
||||
return ret;
|
||||
}
|
||||
|
||||
void __exit cleanup_adm5120_map(void)
|
||||
{
|
||||
#ifdef CONFIG_MTD_PARTITIONS
|
||||
del_mtd_partitions(adm5120_mtd);
|
||||
#endif
|
||||
map_destroy(adm5120_mtd);
|
||||
iounmap((void *)adm5120_map.virt);
|
||||
}
|
||||
|
||||
module_init(init_adm5120_map);
|
||||
module_exit(cleanup_adm5120_map);
|
||||
|
|
|
|||
Loading…
Reference in a new issue