On Fri, Aug 08, 2008 at 09:42:41AM -0700, Fundu wrote: > First off i have a ppc based board. > and i'm trying to load a kernel image with ramdisk rootfs. Why? You can also boot your root fs for example directly from a flash partition. > i have build the kernel. it spit uImage,zImage and vmlinux.gz That depends on your build system ... > my question are. > 1) what are all the different image types ? > i know the uImage is just the kernel, what are the rest (zImage & vmlinux.gz)? An uImage can contain a kernel but also other things. Please check the U-Boot documentation for more details. zImage and vmlinux.gz are kernel images. You usually need only one of them, but the details do surely depend also on your build system. > 2) i'm using u-boot as the bootldr. so i download the uImage (cause > zImage and vmlinux.gz aren't bootlable) from tftp server and then do > bootm <address> the kernel only load partially. How does the kernel > know where/how to load the rootfs ? In U-Boot you can add a kernel command line by setting the bootargs environment variable. It's probably a good idea to start reading the U-Boot documentation, or whatever came with your board support package. rsc -- Dipl.-Ing. Robert Schwebel | http://www.pengutronix.de Pengutronix - Linux Solutions for Science and Industry Handelsregister: Amtsgericht Hildesheim, HRA 2686 Hannoversche Str. 2, 31134 Hildesheim, Germany Phone: +49-5121-206917-0 | Fax: +49-5121-206917-9 -- To unsubscribe from this list: send the line "unsubscribe linux-embedded" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
