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Re: uboot-envtools parameter file for Marvel OpenRD "ultimate"

On Sun, 2012-08-12 at 15:29 -0700, Rick Thomas wrote: 
> On Aug 12, 2012, at 12:22 AM, shawn wrote:
> > On Sat, 2012-08-11 at 23:47 -0700, Rick Thomas wrote: 
> >> The "examples" directory for the uboot-envtools contains sample  
> >> fw_env.config files for several machine types, but not one that seems  
> >> to relate to my Marvell OpenRD "ultimate" box.  Does anybody on this  
> >> list have one?
> >> 
> >> Given the popularity of Debian on the Marvell "plug" machines, does  
> >> anybody know why they and the OpenRD boxes aren't represented there?
> >> 
> >> Should I submit a "wishlist" bug?
> > 
> > This works for my sheevaplug, however I had to change by root cmd
> > partitioning to have a partition for the start of the NAND:
> > 
> > /dev/mtd0       0xa0000 0x020000        0x20000
> > 
> > 
> > #my commandline:
> > # cat /proc/cmdline 
> > console=ttyS0,115200 ubi.mtd=2 root=ubi0:rootfs rootfstype=ubifs rw
> > mtdparts=orion_nand:0x100000@0x0(u-boot),0x400000@0x100000(uImage),0x1fb00000@0x500000(rootfs) rw
> Thanks, Shawn!  I'm not much up on the mtd stuff (read: while I understand all of the words and most of the syntax, the "cmdline" part of your reply is still greek to me).  Is there a good reference I could read on how it works and interacts between Uboot and Linux?  Failing that, could you give me an explanation of what your cmdline stuff does and why it's needed?
> Thanks!
> Rick

man proc -> type "//proc/cmdline" -> hit [enter]

              Arguments passed to the Linux kernel at boot time.  Often
done  via  a  boot
              manager such as lilo(8) or grub(8).
the mtdparts= is how you specify the partitioning of NAND flash via the
kernel command line.
-Shawn Landden

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