replace the custom mtd driver with a partition parser
Signed-off-by: Florian Fainelli <florian@openwrt.org> SVN-Revision: 34554
This commit is contained in:
Florian Fainelli
parent
b516c8d89d
commit
1232f91efb
4 changed files with 164 additions and 207 deletions
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@ -60,7 +60,8 @@ CONFIG_MIPS=y
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CONFIG_MIPS_L1_CACHE_SHIFT=5
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# CONFIG_MIPS_MACHINE is not set
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CONFIG_MIPS_MT_DISABLED=y
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CONFIG_MTD_ADM8668_NOR=y
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CONFIG_MTD_ADM8668_PARTS=y
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CONFIG_MTD_PHYSMAP=y
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CONFIG_NEED_DMA_MAP_STATE=y
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CONFIG_NEED_PER_CPU_KM=y
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CONFIG_NO_EXCEPT_FILL=y
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@ -1,4 +1,6 @@
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/*
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* Infineon/ADMTek 8668 (WildPass) platform devices support
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*
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* Copyright (C) 2010 Scott Nicholas <neutronscott@scottn.us>
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* Copyright (C) 2012 Florian Fainelli <florian@openwrt.org>
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*
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@ -11,6 +13,7 @@
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#include <linux/kernel.h>
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#include <linux/platform_device.h>
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#include <linux/mtd/physmap.h>
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#include <linux/mtd/partitions.h>
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#include <linux/pci.h>
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#include <linux/slab.h>
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#include <linux/ioport.h>
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@ -89,9 +92,33 @@ static struct platform_device adm8668_eth1_device = {
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.num_resources = ARRAY_SIZE(eth1_resources),
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};
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static const char *nor_probe_types[] = { "adm8668part", NULL };
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static struct physmap_flash_data nor_flash_data = {
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.width = 2,
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.part_probe_types = nor_probe_types,
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};
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static struct resource nor_resources[] = {
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{
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.start = ADM8668_SMEM1_BASE,
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.end = ADM8668_SMEM1_BASE + 0x800000 - 1,
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.flags = IORESOURCE_MEM,
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},
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};
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static struct platform_device adm8668_nor_device = {
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.name = "physmap-flash",
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.id = -1,
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.resource = nor_resources,
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.num_resources = ARRAY_SIZE(nor_resources),
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.dev.platform_data = &nor_flash_data,
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};
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static struct platform_device *adm8668_devs[] = {
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&adm8668_eth0_device,
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&adm8668_eth1_device,
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&adm8668_nor_device,
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};
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int __devinit adm8668_devs_register(void)
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@ -1,30 +1,30 @@
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/*
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* Copyright (C) 2010 Scott Nicholas <neutronscott@scottn.us>
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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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* Infineon/ADMTek ADM8668 (WildPass) partition parser support
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*
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* original functions for finding root filesystem from Mike Baker
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* Copyright (C) 2010 Scott Nicholas <neutronscott@scottn.us>
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* Copyright (C) 2012 Florian Fainelli <florian@openwrt.org>
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*
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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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* original functions for finding root filesystem from Mike Baker
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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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* 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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* 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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* 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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*
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* Copyright 2004, Broadcom Corporation
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@ -34,9 +34,6 @@
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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 adm8668 boards
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*
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*/
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#include <linux/module.h>
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@ -45,16 +42,13 @@
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#include <linux/sched.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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#include <linux/slab.h>
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#include <linux/mtd/partitions.h>
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#include <linux/vmalloc.h>
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#include <linux/slab.h>
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#include <linux/crc32.h>
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#include <linux/magic.h>
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#include <asm/io.h>
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#define WINDOW_ADDR 0x10000000
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#define WINDOW_SIZE 0x800000
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#define BANKWIDTH 2
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#define PFX "adm8668-part: "
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/* first a little bit about the headers i need.. */
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@ -81,176 +75,122 @@ struct uboot_header {
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char ih_name[32]; /* image name */
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};
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/************************************************/
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static struct mtd_info *adm8668_mtd;
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struct map_info adm8668_map = {
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name: "adm8668-nor",
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size: WINDOW_SIZE,
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phys: WINDOW_ADDR,
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bankwidth: BANKWIDTH,
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};
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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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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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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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/*
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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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schedule(); /* Wait for erase to finish. */
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remove_wait_queue(&wait_q, &wait);
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/*
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* Next, write data to flash.
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*/
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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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/* decent defaults in case... shrug */
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static struct mtd_partition adm8668_parts[] = {
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{ name: "linux", offset: 0x40000, size: WINDOW_SIZE-0x40000, },
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{ name: "rootfs", offset: 0xe0000, size: 0x140000, },
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{ name: "uboot_env", offset: 0x20000, size: 0x20000, },
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{ name: NULL, },
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};
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/* in case i wanna change stuff later, and to clarify the math section... */
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#define PART_LINUX 0
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#define PART_ROOTFS 1
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#define PART_UBOOT_ENV 2
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#define NR_PARTS 3
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static int __init
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init_mtd_partitions(struct mtd_info *mtd, size_t size)
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static int adm8668_parse_partitions(struct mtd_info *master,
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struct mtd_partition **pparts,
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struct mtd_part_parser_data *data)
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{
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int ret;
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struct uboot_header uhdr;
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int off, blocksize;
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size_t len, linux_len;
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struct squashfs_super_block shdr;
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struct erase_info erase_info;
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struct mtd_partition *adm8668_parts;
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memset(&erase_info, 0, sizeof(erase_info));
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blocksize = master->erasesize;
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blocksize = mtd->erasesize;
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if (blocksize < 0x10000)
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blocksize = 0x10000;
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adm8668_parts = kzalloc(sizeof(*adm8668_parts) * NR_PARTS, GFP_KERNEL);
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if (!adm8668_parts)
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return -ENOMEM;
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adm8668_parts[PART_LINUX].name = kstrdup("linux", GFP_KERNEL);
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adm8668_parts[PART_LINUX].offset = 0x40000;
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adm8668_parts[PART_LINUX].size = master->size - 0x40000;
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adm8668_parts[PART_ROOTFS].name = kstrdup("rootfs", GFP_KERNEL);
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adm8668_parts[PART_ROOTFS].offset = 0xe0000;
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adm8668_parts[PART_ROOTFS].size = 0x140000;
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adm8668_parts[PART_UBOOT_ENV].name = kstrdup("uboot_env", GFP_KERNEL);
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adm8668_parts[PART_UBOOT_ENV].offset = 0x20000;
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adm8668_parts[PART_UBOOT_ENV].size = 0x20000;
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/* now find squashfs */
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memset(&shdr, 0xe5, sizeof(shdr));
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for (off = adm8668_parts[PART_LINUX].offset; off < size; off += blocksize) {
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for (off = 0x40000; off < master->size; off += blocksize) {
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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(shdr), &len, (char *)&shdr) ||
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if (mtd_read(master, off, sizeof(shdr), &len, (char *)&shdr) ||
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len != sizeof(shdr))
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continue;
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if (shdr.s_magic == SQUASHFS_MAGIC) {
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uint32_t fs_size = (uint32_t)shdr.bytes_used;
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printk(KERN_INFO "%s: Filesystem type: squashfs, size=%dkB\n",
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mtd->name, fs_size>>10);
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pr_info(PFX "filesystem type: squashfs, size=%dkB\n",
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fs_size >> 10);
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/* Update rootfs based on the superblock info, and
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* stretch to end of MTD. rootfs_split will split it */
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/*
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* Update rootfs based on the superblock info, and
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* stretch to end of MTD. rootfs_split will split it
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*/
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adm8668_parts[PART_ROOTFS].offset = off;
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adm8668_parts[PART_ROOTFS].size = mtd->size -
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adm8668_parts[PART_ROOTFS].size = master->size -
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adm8668_parts[PART_ROOTFS].offset;
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/* kernel ends where rootfs starts
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* but we'll keep it full-length for upgrades */
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linux_len = adm8668_parts[PART_LINUX+1].offset -
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/*
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* kernel ends where rootfs starts
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* but we'll keep it full-length for upgrades
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*/
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linux_len = adm8668_parts[PART_LINUX + 1].offset -
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adm8668_parts[PART_LINUX].offset;
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#if 1
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adm8668_parts[PART_LINUX].size = mtd->size -
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adm8668_parts[PART_LINUX].size = master->size -
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adm8668_parts[PART_LINUX].offset;
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#else
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adm8668_parts[PART_LINUX].size = linux_len;
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#endif
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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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pr_err(PFX "could't find root filesystem\n");
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return NR_PARTS;
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found:
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if (mtd->read(mtd, adm8668_parts[PART_LINUX].offset, sizeof(uhdr), &len, (char *)&uhdr) ||
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len != sizeof(uhdr))
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found:
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if (mtd_read(master, adm8668_parts[PART_LINUX].offset, sizeof(uhdr), &len, (char *)&uhdr) ||
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len != sizeof(uhdr)) {
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pr_err(PFX "failed to read u-boot header\n");
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return NR_PARTS;
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}
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/* that's odd. how'd ya boot it then */
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if (uhdr.ih_magic != IH_MAGIC)
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if (uhdr.ih_magic != IH_MAGIC) {
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pr_info(PFX "invalid u-boot magic detected?!?!\n");
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return NR_PARTS;
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}
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if (be32_to_cpu(uhdr.ih_size) != (linux_len - sizeof(uhdr))) {
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unsigned char *block, *data;
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u32 data;
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size_t data_len = 0;
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unsigned char *block;
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unsigned int offset;
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offset = adm8668_parts[PART_LINUX].offset +
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sizeof(struct uboot_header);
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data = (unsigned char *)(WINDOW_ADDR | 0xA0000000 | offset);
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printk(KERN_NOTICE "Updating U-boot image:\n");
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printk(KERN_NOTICE " old: [size: %8d crc32: 0x%08x]\n",
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pr_info(PFX "Updating U-boot image:\n");
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pr_info(PFX " old: [size: %8d crc32: 0x%08x]\n",
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be32_to_cpu(uhdr.ih_size), be32_to_cpu(uhdr.ih_dcrc));
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if (mtd_read(master, offset, sizeof(data), &data_len, (char *)&data)) {
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pr_err(PFX "failed to read data\n");
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goto out;
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}
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/* Update the data length & crc32 */
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uhdr.ih_size = cpu_to_be32(linux_len - sizeof(uhdr));
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uhdr.ih_dcrc = crc32_le(~0, data, linux_len - sizeof(uhdr)) ^ (~0);
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uhdr.ih_dcrc = crc32_le(~0, (char *)&data, linux_len - sizeof(uhdr)) ^ (~0);
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uhdr.ih_dcrc = cpu_to_be32(uhdr.ih_dcrc);
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printk(KERN_NOTICE " new: [size: %8d crc32: 0x%08x]\n",
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pr_info(PFX " new: [size: %8d crc32: 0x%08x]\n",
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be32_to_cpu(uhdr.ih_size), be32_to_cpu(uhdr.ih_dcrc));
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/* update header's crc... */
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@ -260,75 +200,64 @@ init_mtd_partitions(struct mtd_info *mtd, size_t size)
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uhdr.ih_hcrc = cpu_to_be32(uhdr.ih_hcrc);
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/* read first eraseblock from the image */
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block = kmalloc(mtd->erasesize, GFP_KERNEL);
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if (mtd->read(mtd, adm8668_parts[PART_LINUX].offset, mtd->erasesize, &len, block) || len != mtd->erasesize) {
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printk("Error copying first eraseblock\n");
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block = vmalloc(master->erasesize);
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if (!block)
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return -ENOMEM;
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if (mtd_read(master, adm8668_parts[PART_LINUX].offset, master->erasesize, &len, block)
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|| len != master->erasesize) {
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pr_err(PFX "error copying first eraseblock\n");
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return 0;
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}
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/* Write updated header to the flash */
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memcpy(block, &uhdr, sizeof(uhdr));
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if (mtd->unlock)
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mtd->unlock(mtd, off, mtd->erasesize);
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erase_write(mtd, adm8668_parts[PART_LINUX].offset, mtd->erasesize, block);
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if (mtd->sync)
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mtd->sync(mtd);
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kfree(block);
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printk(KERN_NOTICE "Done\n");
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if (master->unlock)
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master->unlock(master, off, master->erasesize);
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erase_info.mtd = master;
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erase_info.addr = (uint64_t)adm8668_parts[PART_LINUX].offset;
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erase_info.len = master->erasesize;
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ret = mtd_erase(master, &erase_info);
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if (!ret) {
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if (mtd_write(master, adm8668_parts[PART_LINUX].offset, master->erasesize,
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&len, block))
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pr_err(PFX "write failed");
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} else
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pr_err(PFX "erase failed");
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||||
|
||||
mtd_sync(master);
|
||||
out:
|
||||
if (block)
|
||||
vfree(block);
|
||||
pr_info(PFX "done\n");
|
||||
}
|
||||
|
||||
*pparts = adm8668_parts;
|
||||
|
||||
return NR_PARTS;
|
||||
}
|
||||
|
||||
int __init init_adm8668_map(void)
|
||||
static struct mtd_part_parser adm8668_parser = {
|
||||
.owner = THIS_MODULE,
|
||||
.parse_fn = adm8668_parse_partitions,
|
||||
.name = "adm8668part",
|
||||
};
|
||||
|
||||
static int __init adm8668_parser_init(void)
|
||||
{
|
||||
int nr_parts, ret;
|
||||
|
||||
adm8668_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE);
|
||||
|
||||
if (!adm8668_map.virt) {
|
||||
printk(KERN_ERR "Failed to ioremap\n");
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
simple_map_init(&adm8668_map);
|
||||
if (!(adm8668_mtd = do_map_probe("cfi_probe", &adm8668_map))) {
|
||||
printk(KERN_ERR "cfi_probe failed\n");
|
||||
iounmap((void *)adm8668_map.virt);
|
||||
return -ENXIO;
|
||||
}
|
||||
|
||||
adm8668_mtd->owner = THIS_MODULE;
|
||||
|
||||
nr_parts = init_mtd_partitions(adm8668_mtd, adm8668_mtd->size);
|
||||
ret = mtd_device_register(adm8668_mtd, adm8668_parts, nr_parts);
|
||||
if (ret) {
|
||||
printk(KERN_ERR "Flash: mtd_device_register failed\n");
|
||||
goto fail;
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
fail:
|
||||
if (adm8668_mtd)
|
||||
map_destroy(adm8668_mtd);
|
||||
if (adm8668_map.virt)
|
||||
iounmap((void *) adm8668_map.virt);
|
||||
adm8668_map.virt = 0;
|
||||
return ret;
|
||||
return register_mtd_parser(&adm8668_parser);
|
||||
}
|
||||
|
||||
void __exit cleanup_adm8668_map(void)
|
||||
static void __exit adm8668_parser_exit(void)
|
||||
{
|
||||
mtd_device_unregister(adm8668_mtd);
|
||||
map_destroy(adm8668_mtd);
|
||||
iounmap((void *) adm8668_map.virt);
|
||||
adm8668_map.virt = 0;
|
||||
deregister_mtd_parser(&adm8668_parser);
|
||||
}
|
||||
|
||||
module_init(init_adm8668_map);
|
||||
module_exit(cleanup_adm8668_map);
|
||||
module_init(adm8668_parser_init);
|
||||
module_exit(adm8668_parser_exit);
|
||||
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_AUTHOR("Scott Nicholas <neutronscott@scottn.us>");
|
||||
MODULE_DESCRIPTION("MTD map driver for ADM8668 NOR Flash");
|
||||
MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
|
||||
MODULE_DESCRIPTION("MTD partition parser for ADM8668");
|
||||
|
|
|
|||
|
|
@ -4,11 +4,11 @@
|
|||
default "0x02000000"
|
||||
depends on MSP_FLASH_MAP_LIMIT_32M
|
||||
|
||||
+config MTD_ADM8668_NOR
|
||||
+ tristate "ADM8668 NOR mapping"
|
||||
+ depends on ADM8668 && MTD_CFI
|
||||
+config MTD_ADM8668_PARTS
|
||||
+ tristate "ADM8668 partition parser"
|
||||
+ depends on ADM8668
|
||||
+ help
|
||||
+ mapping driver for ADM8668 NOR
|
||||
+ Partition parser for the Infineon/ADMTek ADM8668 (WildPass).
|
||||
+
|
||||
config MTD_SUN_UFLASH
|
||||
tristate "Sun Microsystems userflash support"
|
||||
|
|
@ -19,7 +19,7 @@
|
|||
endif
|
||||
|
||||
# Chip mappings
|
||||
+obj-$(CONFIG_MTD_ADM8668_NOR) += adm8668.o
|
||||
+obj-$(CONFIG_MTD_ADM8668_PARTS) += adm8668.o
|
||||
obj-$(CONFIG_MTD_CDB89712) += cdb89712.o
|
||||
obj-$(CONFIG_MTD_CFI_FLAGADM) += cfi_flagadm.o
|
||||
obj-$(CONFIG_MTD_DC21285) += dc21285.o
|
||||
|
|
|
|||
Loading…
Reference in a new issue