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

Benjamin Herrenschmidt benh at kernel.crashing.org
Thu May 19 20:22:24 EST 2005


> Without knowing the size of the code required for this, it would still 
> mean an increase by a couple of hundred percent for the boot 
> information.

Well, if you build the device-tree blob at bootloader build time (you
can then embed it in your bootloader or maybe just put it somewhere in
flash), there is little code involved, basically passing a pointer to it
to the kernel. Now, if you mean the kernel code, oh well, have you seen
how big a ppc64 kernel is anyway ? :)

I would expect something like uboot to be a bit more smart though and
provide optionally some functions to add nodes/properties, but heh,
we'll see. I'll try to provide example code after I'm done with the spec
part.

Ben.





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