booting RHEL6

Tony Breeds tony at
Wed Jul 13 10:58:53 EST 2011

On Mon, Jun 27, 2011 at 07:30:39AM -0700, Tai Pan wrote:
> Hello all,
> I'm having some issues booting rhel6 with yaboot.
> 1) In order to boot the rhel6 kernel i had to increase LOAD_BUFFER_SIZE to
> 0x2600000 in fs_of.c, as the ramdisk is simply too large and it would not get
> all downloaded over tftp.

Which source did you use?

RHEL? Upstream?
If you have time can you rebuild with DEBUG=1 and set the linux,yaboot-debug
environment variable.  This will help us workout if you can even make it work.
> 2) After i got rhel6 to work, i tried the rhel6.1 kernel and this one fails.
> The following is the copy paste of what i see:


> ramdisk loaded at 05700000, size: 32546 Kbytes
> OF stdout device is: /vdevice/vty at 30000000
> Preparing to boot Linux version 2.6.32-131.0.15.el6.ppc64 (mockbuild at (gcc version 4.4.4 20100726 (Red Hat 4.4.4-13) (GCC) ) #1 SMP Tue May 10 15:44:09 EDT 2011
> Max number of cores passed to firmware: 0x0000000000000200
> Calling ibm,client-architecture-support... not implemented
> command line: ks=nfs: br= 
> memory layout at init:
>   memory_limit : 0000000000000000 (16 MB aligned)
>   alloc_bottom : 00000000076d0000
>   alloc_top    : 0000000008000000
>   alloc_top_hi : 0000000077000000
>   rmo_top      : 0000000008000000
>   ram_top      : 0000000077000000
> RTAS allocation failed !

Here's the problem.  Without RTAS The kernel is more or less useless.

Also it looks like  you're trying to install RHEL6 on a power5, you know this
isn't supported by RedHat right?  RHEL is for power6 and newer.

Yours Tony

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