Dear Lukasz, In message <20140515154334.626923b4@amdc2363> you wrote: > > > This reinforces my speculation that you are actually addressing the > > wrong problem. Instead of adding new code and environment variables > > and making the system even more complex, we should just leave > > everything as is, > > During working on this patch I've replaced the crc32() method with the > call to hash_method(), which IMHO is welcome.
Yes, indeed this is highly welcome. Thanks a lot for that! > I also don't personally like the crc32, hence I like the choice which > this patch gives me to use other algorithm (for which I've got HW > support on my platform - e.g. MD5). Well, is this really useful? dfu-utils provides only CRC caculation, so where would you get the reference value for any other checksum metod from? > > and you should try to find out why the CRC > > calculation is so low for you. Checking if caches are enabled is > > probably among the things that should be done first. > > L1 is enabled. L2 has been disabled on purpose (power consumption > reduction). This certainly contributes to slow code execution. > Please note that the last revision of DFU is from 2004. I've contacted > Greg KH (one of the original authors) and he replied that no new attempt > to revise the standard was made. This may just mean that users were just happy with the current situation. It's definitely better than if changed had been proposed but rejected. > The best however, would be to revise the standard to include such > functionality to it. In the same time I'm fully aware that this is > very unlikely to happen. Why do you think it is unlikely? Of course, it would require that someone comes up with such a proposal in the first place. But you sound as if you were certain a proposal had no chance for being considered. I may be naive, but should we not at least try before giving up? Best regards, Wolfgang Denk -- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de God may be subtle, but He isn't plain mean. - Albert Einstein _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
