1. Configure ubi and ubifsIn. configConfig_mtd_ubi = yConfig_ubifs_fs = yConfig_crypto_algapi = y config_crypto_deflate = y config_crypto_lzo = y config_crc16 = y config_lzo_compress = y config_lzo_decompress = yNote::If it is configured as a module (=M), You can manually Load
2. Manual attach/detach UBI to MTD./Ubiattach/Dev/Ubi_ctrl-MMtdnumber./Ubidetaach/Dev/Ubi_ctrl-MMtdnumber
3. Manual create
Introduction
==================
Ubifs file-system stands for ubi file system. ubi stands for "unsorted
Block images ". ubifs is a flash file system, which means it is designed
To work with Flash devices. It is important to understand, that ubifs
Is completely different to any traditional file-system in Linux, like
Ext2, XFS, JFS, etc. ubifs represents a separate class of file-Systems
Which work with MTD de
How to mount the ubi File SystemAddress: http://blog.sina.com.cn/s/blog_5d9051c00100ejvj.htmlMtd and ubi interfaces in Linux:(1) cat/proc/mtd: You can see the mtd of the current system,(2) cat/proc/partitions: partition information, similar to the preceding(3) cat/sys/class/ubi/ubi0/*: ubi of the current system(4) ls/d
Before linux-2.6.27, talking about flash file system, we often think of cramfs, jffs2, yaffs2 and other file systems. They are also based on the file system + MTD + flash device architecture. After the linux-2.6.27, the kernel added a new type of FLASH file system ubi (unsorted block images ). Here we will briefly introduce the reasons for adding the ubi file system and how to use it. I have just got in tou
Address: http://blog.csdn.net/yuanlulu/archive/2010/08/31/5853676.aspx
Recently, U-boot needs to support UBI to easily download the ubi root file system.
Refer to online articles.
Software Version:Linux Kernel: 2.6.27.8U-boot: 201006Lzo: LZO-2.03Zlib: zlib-1.2.5MTD-utils: mtd-utils-20090606
I'm using the smartarm3250 Development Board, first porting the u-boot-1.3.3 provided by the development board to the
Problem areasFlash storage device has the following features:
There is a bad block
Short service life
Storage medium is unstable
Slow read and write speed
Random access not supported (NAND)
Can only be changed by erasing 0 to 1
Minimum read or write unit is page or sub-page
Cheap
For the characteristics of flash equipment, the core functional requirements and quality requirements of the Flash file system should include the following aspects:
Wri
pebs:0Ubi:total number of reserved pebs:1295Ubi:number of PEBs reserved for bad PEB handling:12Ubi:max/mean Erase counter:2/0Ubi:image sequence number:936292432Ubi:background thread "ubi_bgt0d" started, PID 471------------------------------------------------------------------------------Ubifs:recovery neededUbifs:recovery completedubifs:mounted UBI device 0, Volume 0, name "Rootfs"Ubifs:file system size:163602432 Bytes (159768 KiB, 156 MiB, 1268 Lebs
On the host, you need mkfs. ubifs and ubinize tools to make the deployed root file system into an ubi image, which can be obtained by cross-compiling the mtd-utils-1.3.0 and later versions. Currently, the latest version is 1.4.2.tar.bz2.The following process is performed on Fedora Core 9 and may vary with other releases. Compiling MTD-utils requires the support of zlib and lzo, so you need to download and compile them. Download package: wget http://ww
Devices and volumes
The device is the concept of abstraction on MTD, which first needs to be formatted as a UBI device on the MTD partition
Uboot Cmd:ubi Part
Volumes are concepts on UBI devices, and multiple volumes can be created on UBI devices
Uboot Cmd:ubi Create
Mirrors made of mkfs.ubifs are UBI format.
Need to u
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Due to writing a book, blog posts are updated slowly and we are considerate. Today, we will give a detailed explanation of the problem of animation implementation in the group;
This chapter is suitable for those who have not developed games!
When learning about game
Write the configuration file. The advantage is that multiple. IMG files are merged into one. IMG and then burned together. A single. IMG can be used with mkfs. ubifs.The content of the configuration file ubinize. cfg is: (the configuration file can
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