feat(morello): add Morello capability enablement changes
This patch adds a build macro ENABLE_FEAT_MORELLO which when set will
compile BL31 firmware with changes required to boot capability
aware software.
It also adds helper function in c and assmbly to check if morello
hardware is present and if morello capability is enabled or not.
CE field, bits [23:20] in ID_AA64PFR1_EL1 defines whether morello
architecture is present or not, 0b0000 indicates that it is absent
and 0b0001 indicates that it is present. While whether capabilities
are enabled or not is decided at runtime with ENABLE_FEAT_MORELLO build
option.
Reference: https://developer.arm.com/documentation/ddi0606/latest/
Signed-off-by: Manoj Kumar <manoj.kumar3@arm.com>
Signed-off-by: Varshit Pandya <varshit.pandya@arm.com>
Change-Id: Ib16877acbfcb72c4bd8c08e97e44edc0a3e46089
12 files changed