PPC: Bring EPR support closer to reality
We already used to support the external proxy facility of FSL MPICs,
but only implemented it halfway correctly.
This patch adds support for
* dynamic enablement of the EPR facility
* interrupt acknowledgement only when the interrupt is delivered
This way the implementation now is closer to real hardware.
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/target-ppc/excp_helper.c b/target-ppc/excp_helper.c
index 41037a7..0a1ac86 100644
--- a/target-ppc/excp_helper.c
+++ b/target-ppc/excp_helper.c
@@ -178,6 +178,10 @@
if (lpes0 == 1) {
new_msr |= (target_ulong)MSR_HVB;
}
+ if (env->mpic_proxy) {
+ /* IACK the IRQ on delivery */
+ env->spr[SPR_BOOKE_EPR] = ldl_phys(env->mpic_iack);
+ }
goto store_next;
case POWERPC_EXCP_ALIGN: /* Alignment exception */
if (lpes1 == 0) {
