On Tue, 2010-05-04 at 21:16 +0600, Dmitry Vinokurov wrote: > Hello, > > Is there any way to cancel compression stage of kernel build and get > uncompressed uImage using OE? I've measured uncompressing time (using > stopwatch actually, so it could be +-0.1-0.2 seconds or even more) -- it's > about 0.8-0.9 seconds, and boot time is much more critical for my system > than image size, so even 0.5 seconds is really important. Bootloader is > Uboot, board is ARM9 Phytec lpc3250. > > Also I've read http://elinux.org/About_Compression and it states about > decompress time about 50ms, so looks like either I should measure boot time > using more precise tools (like from inside of Uboot) or my board is not so > fast as those which used by authors. Perhaps anybody could share their > experience in this issue, is it worth at all to try to build uncompressed > kernel?
Since we don't use the kernel's uImage rule, do_uboot_mkimage in kernel.bbclass could be extended easily enough to check for a NO_KERNEL_COMPRESSION variable or whatever and do or not do the gzip (and pass the right arg to mkimage). -- Tom Rini <[email protected]> Mentor Graphics Corporation _______________________________________________ Openembedded-devel mailing list [email protected] http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-devel
