From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mirco Fuchs Date: Mon, 25 Jul 2005 14:54:03 +0200 Subject: [U-Boot-Users] Problem with bootm command Message-ID: <2824371@web.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de I have a problem getting started a 2.6.12 kernel with initrd on my csb637 board using u-boot 1.1.3 as bootloader. I allready searched the mailing list archive but i did not find a solution for this problem. I placed an initrd- u-boot image to 0x10160000 and an u-boot kernel image to 0x10040000. My kernel parameters are as follows: mem=64M console=ttyS0,115200 initrd=0x21200000,0x001b06b6 root=/dev/ram rw The kernel is compiled with initrd support. When using the u-boot 'bootm 0x10040000 0x10160000' command, the kernel is decompressed and starts but is not able to mount the initrd as it's root file system. If I change the kernel command line to mem=64M console=ttyS0,115200 initrd=0x21200040,0x001b06b6 root=/dev/ram rw, the kernel boots correctly with initrd as it's root fs. The images were created with the mkimage tool delivered with u-boot. For creating the initrd image i used the following command: mkimage -n 'rootfs' -A arm -O linux -T ramdisk -C gzip -a 0x21200000 -e 0x21200000 initrd.bin initrd.img I think the problem occures because of the added file-header to the initrd binary file. I compared the original binary file with the u-boot initrd image and found out, that a header with the size of 0x40 bytes is appended at the beginning of the original binary file. Maybe i only have to change the Entry Point to 0x21200040, but normally i do not know the size of the appended header information. I thought that when using the bootm command u-boot copies the initrd image to it's designated sdram location without the header information (-- but obviously it does not), am i wrong? Maybe there's another mistake. Best Regards Mirco _________________________________________________________________________ Mit der Gruppen-SMS von WEB.DE FreeMail k?nnen Sie eine SMS an alle Freunde gleichzeitig schicken: http://freemail.web.de/features/?mc=021179