Booting PhyTec PCM043/IMX35 from USB/SD-Card
s.hauer at pengutronix.de
Thu May 31 14:27:24 EDT 2012
On Fri, May 25, 2012 at 11:35:36AM +0200, Peter Kuennemann at Crane-Soft wrote:
> To have kernel in flash and rootfs on MMC i tried bootargs as:
> ... root=/dev/mmcblk0p1 rootfstype=ext2 rootflags=noatime rw noinitrd rootwait ..
> and it boots the kernel properly from flash up to:
> mmcblk0: mmc0:a95c SD01G 968 MiB <== Recognized the sd card
> mmcblk0: p1 <== and partion 1
> 1f00 256 mtdblock0 (driver?)
> 1f01 128 mtdblock1 (driver?)
> 1f02 2048 mtdblock2 (driver?)
> 1f03 30336 mtdblock3 (driver?)
> 1f04 1048576 mtdblock4 (driver?)
> b300 992000 mmcblk0 driver: mmcblk
> b301 991585 mmcblk0p1 <=== Something missing here?
> No filesystem could mount root, tried: ext2 <===
> Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(179,1) <===
> The mmc does contain a ext2 filesystem with the proper rootfs copied from
> the jffs2.image that I mounted under Ubuntu as loop device. The kernel has ext2 fs
> support compiled in.
> The rootfs on the mmc is properly accessible when booting kernel and flash footfs
> on the very same platform.
Has this been solved in the mean time? The above looks correct, I have
no idea what's wrong.
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