[U-Boot-Users] Cannot boot from a uImage on the lite5200

[Grant Likely]

On 4/19/05, Wolfgang Denk <wd at denx.de> wrote:
> In message <528646bc0504190945638591fc at mail.gmail.com> you wrote:
> > I'm having problems getting u-boot to boot linux from a uImage on my
> > lite5200 eval board.  I can load a zImage into ram (@ 0x200000) and
> > use the go command to boot it with no problems.  When I load a uImage
> 
> This means that your kernel is probably ok in general...
> 
> > I get the bootup debug banners from the linux kernel and then the
> > board resets before the "Linux version ..." banner (and then my
> 
> ...and this means  that  most  preobably  it  is  not  ported  and/or
> configured for booting with U-Boot.

What specifically needs to be done to configure a kernel for use with
u-boot?  From the documentation I could only find references to using
mkimage to prepare an image (which I've done).

The kernel I was using contains the mpc5200 patches from Sylvain, so
it should be "u-boot ready".  I've since moved up to stock linux
kernel 2.6.12rc2 which includes the lastest patches for the mpc5200,
but it made no difference.  I could not find anything in the kernel
config file related to u-boot for this port.  The file
Documentation/powerpc/mpc52xx.txt in the kernel tree states that a
'make uImage' should build an image bootable by u-boot.  (The Makefile
simply calls mkimage for the uImage target)

I've also updated to CVS u-boot, but again no change (but solved my
FEC problems nicely)

BTW, I do get some output from the kernel.  The pre-boot debug
messages (from "id mach(): done" to "arch: exit") from
arch/ppc/kernel/setup.c get displayed just like with the zImage.  So
the jump into inital setup code seems to be working.

Thanks in advance,
g.