In message <20050401071559.69834.qmail@xxxxxxxxxxxxxxxxxxxxxxxxxxx> you wrote: > > Don't re-invent the wheel. Consider using (porting) > > U-Boot. > > BTW, do you know how big is U-Boot ? Sure :-) This depends on which features you have on your board and configure into U-Boot. Typical image sizes are 150...200 kB with most features enabled (network support including TFTP, DHCP, NFS; hush shell with the capability to run shell scripts; support for IDE, CompactFlash cards, USB (memory sticks), NAND flash; support for DOS, ext2 and JFFS2 filesystems; graphical display on LCD/VGA, splash screen etc. etc.). The biggest configuration I am aware of at the moment is 280kB; small configurations can be fit in 128 kB; if you really throw out everything you can get rid of you may even make it fit into 64kB. As mentioned before: this depends on architecture and hardware features that have to be supported. And referring to the original question: of course U-Boot supports booting of compressed images (kernel, ramdisk, other) uzing gzip or gzip2 compression. Best regards, Wolfgang Denk -- Software Engineering: Embedded and Realtime Systems, Embedded Linux Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@xxxxxxx Respect is a rational process -- McCoy, "The Galileo Seven", stardate 2822.3
