Hi, All
Each time JFFS2 initialized, uboot need to scan the whole flash. This is fairly time consuming.
So EBS(erase block summary) is used to JFFS2 to reduce mounting time. And I believe this can also be used to UBOOT to reduce booting time.
Does UBOOT support this feature? or does any other solution in uboot to reduce JFFS2 scaning time?
Don't think EBS is going to buy you much. The main problem is that the scanning of JFFS2 in u-boot is inefficient. u-boot could take a hint from the kernel impl. of JFFS2 to reduce scanning. The biggest ones are: - do no scan the whole EB when it is empty. - impl. a better crc32(use the one from linux) - Don't scan more than you have to, that is, ls/read /some/file should only scan and keep records to do the ls/read of that particular file.
There were some patches floating around quite some time ago to improve scanning but I don't think they made it into the u-boot repo.
Jocke