-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Wed, 14 Mar 2012 15:06:04 -0400 (EDT) Matthew Galgoci <mgalgoci@xxxxxxxxxx> wrote: > > Date: Wed, 14 Mar 2012 19:49:18 +0100 > > From: Niels de Vos <devos@xxxxxxxxxxxxxxxxx> > > To: Matthew Galgoci <mgalgoci@xxxxxxxxxx> > > Cc: arm@xxxxxxxxxxxxxxxxxxxxxxx > > Subject: Re: changing kernel w/ uboot > > > > On 14 Mar 2012 14:02, "Matthew Galgoci" <mgalgoci@xxxxxxxxxx> wrote: > > > > > > > > > How does one change the kernel that uboot loads from mtdflash and > > > instead boots a kernel from an ext filesystem on an attached > > > (uboot supported) usb flash drive? Furthermore, is there a way to > > > get uboot to also load an initial ram file (disk or fs)? The > > > hardware in question is a guru plug and I've got the jtag and > > > console adapter. > > > > http://fedoraproject.org/wiki/Architectures/ARM/GuruPlug should > > probably be your starting point. > > That was an ok starting point, and actually one of the first > documents I had looked at. The problem with that guide is it doesn't > actually change the kernel, just the rootfs. > > Additionally, I've learned that the uboot that ships with the guruplug > is somewhat older and doesn't support reading files from ext > filesystems, just fat. > > This is similar to what I experienced: > > http://plugcomputer.org/plugforum/index.php?topic=1642.10;wap2 > > I was able to get uboot to see the partitions and filesystems on a usb > stick (though not the micro sd card in the onboard slot). Perhaps it > has something to do with the sd card being a 16G card. > > The issue I am at now is as follows: > > Marvell>> fatls usb 1:1 > 134819692 initrd-pae.img > 4134432 vmlinuz-pae > grub/ > 11049080 initramfs-3.3.0-0.rc4.git3.1.fc17.armv5tel.img > 3630488 vmlinuz-3.3.0-0.rc4.git3.1.fc17.armv5tel > > 4 file(s), 1 dir(s) > > Marvell>> fatload usb 1:1 0x6400000 > Marvell>> vmlinuz-3.3.0-0.rc4.git3.1.fc17.armv5tel 368 > reading vmlinuz-3.3.0-0.rc4.git3.1.fc17.armv5tel > ................................................................................ > > 3630488 bytes read > Marvell>> bootm 0x6400000 > Wrong Image Format for bootm command > ERROR: can't get kernel image! > Marvell>> > > > Obviously the -PAE i686 kernels don't apply, I am not trying to load > one of those. > > Does anyone see anything patently wrong with what I did above? > > I suppose I could try using the stock uboot to load a newer uboot. > > Thanks, > > Matt > you have to run mkimage on the vmlinuz image for uboot to recognise it Dennis -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.18 (GNU/Linux) iEYEARECAAYFAk9g8YgACgkQkSxm47BaWfcRJACfXSPMNN4ZtcaiyjDPXeHlBd3P vzEAniDZG9TdYErIFLlhNZAa6TEAERWT =bA9O -----END PGP SIGNATURE----- _______________________________________________ arm mailing list arm@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/arm
