f74cb0be8a
The HAFGRTR_EL2 register is UNDEFINED unless the CPU supports both FEAT_FGT and FEAT_AMUv1. FEAT_FGT is mandatory for v8.6-A and upwards, but FEAT_AMUv1 is optional (from v8.4-A upwards), and as such any 8.6-A cores today without support for FEAT_AMUv1 will trigger an undefined instruction exception on accessing this register. Currently ARM_ARCH_AT_LEAST macro has been used to associate with an architecture extension allowing to access HAFGRTR_EL2 register. This condition should be replaced with macros specific to individual features. This patch adds a new set of macros "ENABLE_FEAT_FGT, ENABLE_FEAT_AMUv1, ENABLE_FEAT_ECV" under build options to provide controlled access to the HAFGRTR_EL2 register. Further to ensure that the the build options passed comply with the given hardware implementation, a feature detection mechanism, checking whether build options match with the architecture is required at bootime. This will be implemented and pushed later in a separate patch. Signed-off-by: Jayanth Dodderi Chidanand <jayanthdodderi.chidanand@arm.com> Change-Id: Ie390f4babe233b8b09455290277edbddecd33ead |
||
|---|---|---|
| .. | ||
| arch | ||
| bl1 | ||
| bl2 | ||
| bl2u | ||
| bl31 | ||
| bl32 | ||
| common | ||
| drivers | ||
| dt-bindings | ||
| export | ||
| lib | ||
| plat | ||
| services | ||
| tools_share | ||