tree 51cfa41c09a5b609816d5e85230f86286e5a2b45
parent 0b42916a66d78603315dc56e41e592ad46f98fe3
author Ard Biesheuvel <ard.biesheuvel@linaro.org> 1546765644 +0100
committer Ard Biesheuvel <ard.biesheuvel@linaro.org> 1547571083 +0100

spm: permit platform to override the VMA placement of the vector table

On some systems, it may be preferred to place the secure EL1/0 vector
table outside of the static placement of the BL31 image itself, for
instance when the latter is located in non-shareable SRAM which does
not tolerate inner shareable WBWA mappings (as is the case on SynQuacer)

So permit the platform to #define SPM_SHIM_EXCEPTIONS_VMA in its
supplementary linker script, in which case it will be used as the
VMA region for the vector table. Note that the LMA does not change,
and it is up to the platform to copy the contents to the right place
at init time.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>