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U-Boot中ubi和ubifs命令的使用

发布时间：2020-12-15 07:08:12 所属栏目：百科来源：网络整理

导读：（1）查看MTD分区表 [cpp] view plain copy print ? U-Boot$?mtdparts?? mtdparts?variable?not?set,?see? 'help?mtdparts' ?? no?partitions?defined?? ?? defaults:?? mtdids?:?nand0=nandflash0?? mtdparts:?mtdparts=nandflash0:1536k(bootloder),512k(p

（1）查看MTD分区表

[cpp] view plain copy print ?

U-Boot$?mtdparts??

mtdparts?variable?not?set,?see?'help?mtdparts'??

no?partitions?defined??

??

defaults:??

mtdids?:?nand0=nandflash0??

mtdparts:?mtdparts=nandflash0:1536k(bootloder),512k(params),4m(kernel),16m(safefs),-(rootfs)??

U-Boot$ mtdparts mtdparts variable not set,see 'help mtdparts' no partitions defined defaults: mtdids : nand0=nandflash0 mtdparts: mtdparts=nandflash0:1536k(bootloder),-(rootfs)

?

（2）载入默认分区表

?U-Boot$ mtdparts default

（3）激活分区

U-Boot$ ubi part safefs

[cpp] view plain copy print ?

Creating?1?MTD?partitions?on?"nand0":??
0x000000600000-0x000001600000?:?"mtd=3"??
device_name0:mtd=3??
UBI:?attaching?mtd1?to?ubi0??
UBI:?physical?eraseblock?size:?131072?bytes?(128?KiB)??
UBI:?logical?eraseblock?size:?129024?bytes??
UBI:?smallest?flash?I/O?unit:?2048??
UBI:?sub-page?size:?512??
UBI:?VID?header?offset:?512?(aligned?512)??
UBI:?data?offset:?2048??
scanning?error?0??
UBI:?attached?mtd1?to?ubi0??
UBI:?MTD?device?name:?"mtd=3"??
UBI:?MTD?device?size:?16?MiB??
UBI:?number?of?good?PEBs:?127??
UBI:?number?of?bad?PEBs:?1??
UBI:?max.?allowed?volumes:?128??
UBI:?wear-leveling?threshold:?4096??
UBI:?number?of?internal?volumes:?1??
UBI:?number?of?user?volumes:?1??
UBI:?available?PEBs:?0??
UBI:?total?number?of?reserved?PEBs:?127??
UBI:?number?of?PEBs?reserved?for?bad?PEB?handling:?2??
UBI:?max/mean?erase?counter:?4/1??

??

?

查看当前激活的分区： U-Boot$ ubi part

[cpp] view plain copy print ?

Device?0:?nand0,?partition?safefs??

（4）挂载分区

U-Boot$ ubifsmount safefs

[cpp] view plain copy print ?

UBIFS:?recovery?needed??
UBIFS:?recovery?deferred??
UBIFS:?mounted?UBI?device?0,?volume?0,?name?"safefs"??
UBIFS:?mounted?read-only??
UBIFS:?file?system?size:?14192640?bytes?(13860?KiB,?13?MiB,?110?LEBs)??
UBIFS:?journal?size:?9033728?bytes?(8822?KiB,?8?MiB,?71?LEBs)??
UBIFS:?media?format:?w4/r0?(latest?is?w4/r0)??
UBIFS:?default?compressor:?LZO??
UBIFS:?reserved?for?root:?0?bytes?(0?KiB)??

（5）查看分区的内容

U-Boot$ ubifsls

[cpp] view plain copy print ?

<DIR>?3840?Tue?Apr?20?07:42:09?2010?bin??
<DIR>?480?Fri?Aug?28?02:32:54?2009?dev??
<DIR>?2416?Thu?Jan?01?00:18:47?1970?etc??
<DIR>?5464?Tue?Apr?20?07:54:28?2010?lib??
<DIR>?480?Tue?Apr?20?07:42:01?2010?mnt??
<DIR>?160?Fri?Aug?28?01:37:57?2009?opt??
<DIR>?224?Tue?Apr?20?09:19:29?2010?tmp??
<DIR>?160?Fri?Aug?28?01:37:57?2009?sys??
<DIR>?736?Thu?Feb?26?07:25:19?2009?var??
<DIR>?608?Fri?Aug?28?02:32:54?2009?usr??
<DIR>?296?Fri?Aug?28?01:37:57?2009?boot??
<DIR>?224?Tue?Apr?20?07:42:01?2010?home??
<DIR>?160?Fri?Aug?28?01:37:57?2009?proc??
<DIR>?2528?Tue?Sep?14?08:50:07?2010?sbin??
<DIR>?160?Fri?Aug?28?01:37:57?2009?root??
<LNK>?11?Tue?Sep?14?08:24:07?2010?linuxrc??
??????????????706?Wed?Sep?15?08:47:30?2010?burn.usb??
???????????????52?Wed?Jun?30?06:30:21?2010?readme??
??????????????697?Wed?Sep?15?08:47:43?2010?burn.cf??
??????????????664?Wed?Sep?15?08:47:17?2010?burn.sd??

（6）查看某个文件

?

U-Boot$ ubifsload 80008000 readme

[cpp] view plain copy print ?

Loading?file?'readme'?to?addr?0x80008000?with?size?52?(0x00000034)...??
Done??

?

U-Boot$ md 80008000

[cpp] view plain copy print ?

80008000:?65666173?66207366?6120726f?4c206c6c?safefs?for?all?L??
80008010:?32334350?42203035?6472616f?200a2e73?PC3250?Boards..??
80008020:?20202020?32202020?2d303130?302d3730?2010-07-0??
80008030:?0a0a0a31?00000000?00000000?00000000?1...............??

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