tree 080413b69e49f71f946ffcfd3d8736583a1fbb38
parent 9af54e114789e2765a71a770af2b507ed823b454
author Stephan Gerhold <stephan@gerhold.net> 1678788905 +0100
committer Stephan Gerhold <stephan@gerhold.net> 1691157779 +0200

fix(bl32): always include arm_arch_svc in SP_MIN

The PSCI_FEATURES call implementation in TF-A always indicates support
for SMCCC_VERSION, but only BL31 ensures that the corresponding Arm
Architecture Service (arm_arch_svc) is really included in the build.
For SP_MIN only stm32mp1 currently includes it in the platform-specific
make file.

This means that it is easily possible to build configurations that
violate the PSCI/SMCCC specification. On Linux this leads to incorrect
detection of the SMC Calling Convention when using SP_MIN:

  [    0.000000] psci: SMC Calling Convention v65535.65535

Fix this by always including the Arm Architecture Service in SP_MIN
builds. This allows Linux to detect the convention correctly:

  [    0.000000] psci: SMC Calling Convention v1.4

Change-Id: Iaa3076c162b7a55633ec1e27eb5c44d22f8eb2a1
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>