refactor(cpufeat): decouple FGT feature detection and build flags
Split the feature check for FEAT_FGT into two parts:
- A boolean function that just evaluates whether the feature is usable.
This takes build time flags into account, and only evaluates the CPU
feature ID registers when the flexible FEAT_STATE_CHECK method is
used.
- A "raw" function that returns the unfiltered CPU feature ID register.
Change the callers where needed, to give them the version they actually
want.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Change-Id: I9a041132d280451f5d9f653a62904f603b2a916d
diff --git a/lib/el3_runtime/aarch64/context_mgmt.c b/lib/el3_runtime/aarch64/context_mgmt.c
index 866ac41..93d817f 100644
--- a/lib/el3_runtime/aarch64/context_mgmt.c
+++ b/lib/el3_runtime/aarch64/context_mgmt.c
@@ -359,7 +359,7 @@
&& (GET_M32(ep->spsr) == MODE32_hyp))) {
scr_el3 |= SCR_HCE_BIT;
- if (is_armv8_6_fgt_present()) {
+ if (is_feat_fgt_supported()) {
scr_el3 |= SCR_FGTEN_BIT;
}