Difference between revisions of "UBIFS"
From ArmadeusWiki
m (→Additional informations) |
(update procedure according to the latest armadeus software for both apf9328 and apf27) |
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This is a preliminary page dealing with the installation of UBIFS on the APF boards. | This is a preliminary page dealing with the installation of UBIFS on the APF boards. | ||
| − | UBIFS will replace JFFS2 file system on NAND based board because JFFS2 induces a big overhead when parsing, reading and writing | + | UBIFS will replace JFFS2 file system on NAND (and NOR as well) based board because JFFS2 induces a big overhead when parsing, reading and writing large devices [http://www.linux-mtd.infradead.org/doc/ubifs.html#L_scalability UBISFS scalability] |
| + | For the time being, this procedure can only be used with the apf27 board. Volunteers a welcome to investigate solutions to use UBIFS on the apf9328. | ||
== Introduction == | == Introduction == | ||
[http://www.linux-mtd.infradead.org/doc/ubifs.html UBIFS website] | [http://www.linux-mtd.infradead.org/doc/ubifs.html UBIFS website] | ||
| + | |||
== Setting up == | == Setting up == | ||
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sudo apt-get install uuid-dev | sudo apt-get install uuid-dev | ||
| − | * buildroot: target filesystem -> ubifs root filesystem (0x1F800, 0x800, 2047) | + | * buildroot: target filesystem -> ubifs root filesystem (PEB=0x20000, LEB=0x1F800, minIO=0x800, SUBPAGESIZE=512, MAXLEB=2047) and for apf9328 should be PEB=0x20000, LEB=0x1FF80, minIO=0x1, SUBPAGESIZE=0, MAXLEB=255) |
* linux: file systems -> Miscellanous -> ubifs support and disable debugging !! | * linux: file systems -> Miscellanous -> ubifs support and disable debugging !! | ||
* linux: device driver -> mtd -> ubi unsorted block image -> Enable UBI (4096) and disable debugging !! | * linux: device driver -> mtd -> ubi unsorted block image -> Enable UBI (4096) and disable debugging !! | ||
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== Additional informations == | == Additional informations == | ||
| − | A new file 'ubinize.cfg' defining the ubi volumes is located in ''buildroot/target/ | + | A new file 'ubinize.cfg' defining the ubi volumes is located in ''buildroot/target/ubifs/'' this file contains the different UBI volumes of the UBI image: |
<pre> | <pre> | ||
[ubifs] | [ubifs] | ||
Revision as of 23:34, 4 October 2009
Page under construction...
Informations on this page are not guaranteed !!
This is a preliminary page dealing with the installation of UBIFS on the APF boards. UBIFS will replace JFFS2 file system on NAND (and NOR as well) based board because JFFS2 induces a big overhead when parsing, reading and writing large devices UBISFS scalability For the time being, this procedure can only be used with the apf27 board. Volunteers a welcome to investigate solutions to use UBIFS on the apf9328.
Introduction
Setting up
- host system: add uuid-dev packages (should be already installed as required to build the HEAD of Armadeus repository) :
sudo apt-get install uuid-dev
- buildroot: target filesystem -> ubifs root filesystem (PEB=0x20000, LEB=0x1F800, minIO=0x800, SUBPAGESIZE=512, MAXLEB=2047) and for apf9328 should be PEB=0x20000, LEB=0x1FF80, minIO=0x1, SUBPAGESIZE=0, MAXLEB=255)
- linux: file systems -> Miscellanous -> ubifs support and disable debugging !!
- linux: device driver -> mtd -> ubi unsorted block image -> Enable UBI (4096) and disable debugging !!
- uboot: setenv bootcmd run ubifsboot
- uboot: setenv download_rootfs tftpboot ${loadaddr} ${serverpath}${board_name}-rootfs.arm.ubifs
Additional informations
A new file 'ubinize.cfg' defining the ubi volumes is located in buildroot/target/ubifs/ this file contains the different UBI volumes of the UBI image:
[ubifs] mode=ubi vol_id=0 vol_type=dynamic vol_name=rootfs vol_alignment=1 vol_flags=autoresize
This file is processed by the ubinize utility after mkfs.ubifs.
