[PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

Russell King - ARM Linux linux at arm.linux.org.uk
Fri Nov 27 11:51:48 PST 2015

On Fri, Nov 27, 2015 at 01:27:23PM +0000, Russell King - ARM Linux wrote:
> It is possible to redirect any program to open any other file.  You can
> do it via a LD preload, and intercepting the open(), and possibly the
> read() calls if you want to do something more fancy.  The down-side is
> that you have to arrange for the preloaded object to be used by the
> linker, and the additional overhead it places on the intercepted
> functions.

Another idea if people don't like the preload idea.

We could create a zero-sized /proc/atags, and then use a bind mount in
userspace to bind some other file containing the required information
on top.  That could even be the atag blob from /sys/firmware/whatever.
The N700 (or whatever platform needs it) could be responsible for
creating the zero-sized /proc/atags so that we don't have it everywhere.

FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up
according to speedtest.net.

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