[PATCH v3 02/31] arm64: Kernel booting and initialisation
catalin.marinas at arm.com
Mon Sep 10 08:51:37 EDT 2012
On Mon, Sep 10, 2012 at 06:53:39AM +0100, Jean-Christophe PLAGNIOL-VILLARD wrote:
> On 19:29 Sun 09 Sep , Nicolas Pitre wrote:
> > On Sun, 9 Sep 2012, Jean-Christophe PLAGNIOL-VILLARD wrote:
> > > On 17:26 Fri 07 Sep , Catalin Marinas wrote:
> > > > +The image must be placed at the specified offset (currently 0x80000)
> > > > +from the start of the system RAM and called there. The start of the
> > > > +system RAM must be aligned to 2MB.
> > > can we drop this
> > Drop what?
> > And why?
> This contrain the must be loadable at any address
You can't easily load the kernel image at any address, unless it can
relocate itself and you have a way to specify PHYS_OFFSET. We don't want
a compile-time PHYS_OFFSET, the kernel detects it at boot time based on
the load address.
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