tree 2d7dcee46c64ae1abd75b87973e99985aa39e191
parent 6b1ca8f35802fddc530e1a5f2be7b82ddbab6917
author David Wang <david.wang@arm.com> 1457319777 +0800
committer David Wang <david.wang@arm.com> 1459390441 +0800

Add support to load BL31 in DRAM

This patch adds an option to the ARM common platforms to load BL31 in the
TZC secured DRAM instead of the default secure SRAM.

To enable this feature, set `ARM_BL31_IN_DRAM` to 1 in build options.
If TSP is present, then setting this option also sets the TSP location
to DRAM and ignores the `ARM_TSP_RAM_LOCATION` build flag.

To use this feature, BL2 platform code must map in the DRAM used by
BL31. The macro ARM_MAP_BL31_SEC_DRAM is provided for this purpose.
Currently, only the FVP BL2 platform code maps in this DRAM.

Change-Id: If5f7cc9deb569cfe68353a174d4caa48acd78d67