[U-Boot-Users] RFC: Booting the Linux/ppc64 kernel without Open Firmware HOWTO

Marius Groeger
2005-05-18T08:12:21Z

Ben,

On Wed, 18 May 2005, Benjamin Herrenschmidt wrote:

> Here's the very first draft of my HOWTO about booting the linux/ppc64
> kernel without open firmware. It's still incomplete, the main chapter
^^^^^^^^^^^^^^^^^^^^^
One could argue whether the full-blown emulation of an OF device tree
may really be called this.... ;-)

> b) Direct entry with a flattened device-tree block. This entry
> point is called by a) after the OF trampoline and can also be
> called directly by a bootloader that does not support the Open
> Firmware client interface. It is also used by "kexec" to

For OF based systems, what you outline definitely makes an awful lot of
sense.

For others I wonder what the costs of this are in terms of the memory
footprint (both RAM and ROM). Are there reference implementations in
existence?

Regards,
Marius

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