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2013-03-20ARM: rpi_b: use bcm2835 mbox driver to get memory sizeStephen Warren
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>
2012-09-01ARM: add Raspberry Pi model B board, using BCM2835 SoCStephen Warren
The Raspberry Pi model B uses the BCM2835 SoC, has 256MB of RAM, contains an SMSC 9512 USB LAN/Hub chip, and various IO connectors. For more details, see http://www.raspberrypi.org/. Various portions (cache enable, MACH_TYPE setup, RAM size limit, stack relocation to top of RAM) extracted from work by: Oleksandr Tymoshenko <gonzo@bluezbox.com>. GPIO driver enablement by Vikram Narayanan <vikram186@gmail.com>. Signed-off-by: Stephen Warren <swarren@wwwdotorg.org> Acked-by: Tom Rini <trini@ti.com>