howto update uboot parameters partition in linux?

Wonder Won

Hi, everyone,

for ipnc368, I can read and update(write) mtd2/mtdblock2 partition(linux kernel) or mtd 3 partion(linux root fs) normally. Now, I want to change uboot parmameters with telnet remotely. So I think I can update the mtd1 partition. I read the mtd1to a binary image file from a tested ok camera, but I found its' content is all 0xFF. I write the abnormal bin file to another camera's mtd1 partion, I found the write action seems no effect. I have try dd /dev/mtd1, cp /dev/mtdlock1, the result are same.

any suggestion are appreciated!

thanks!

over 14 years ago

0 Forest Wang over 13 years ago

Intellectual 315 points

Hi Wonder,

my way is to generate a binary image composed all the firmwire( ubl uboot kernel paras kernel and filesys).

0 Wonder Won over 13 years ago in reply to Forest Wang

Intellectual 995 points

Thanks Wang. I need remotely(hundres of kilometers) change uboot boot params vIa Internet

0 Jason Davis over 13 years ago in reply to Wonder Won

Prodigy 140 points

There is a set of utilities fw_printenv and fw_setenv that exist in under the tools subdirectory of the u-boot source. Copy those executables to the target (I believe one is just a symlink to the other).

0 Wonder Won over 12 years ago in reply to Jason Davis

Intellectual 995 points

fw_printenv can work correctly, but fw_setenv would get some garbled charactars in uboot printenv command, this cause uboot boot linux fail

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howto update uboot parameters partition in linux?