tree 2803bad4839969cfa68a8ca75a3912d9783a5596
parent 88077280c48ba4e0f3b9a305ffb748b1bba8380a
author Stephen Warren <swarren@wwwdotorg.org> 1359477457 +0000
committer Albert ARIBAUD <albert.u.boot@aribaud.net> 1363789769 +0100

ARM: rpi_b: use bcm2835 mbox driver to get memory size

The firmware running on the bcm2835 SoC's VideoCore CPU determines how
much of the system RAM is available for use by the ARM CPU. Previously,
U-Boot assumed that only 128MB was available, since this was the
smallest value configured by any public firmware. However, we can now
query the actual value at run-time from the firmware using the mbox
property protocol.

Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>