openpic: export e500 epr enable into a ppc.c function

Enabling and disabling the EPR capability (mpic_proxy) is a system
wide operation. As such, it belongs into the ppc.c file, since that's
where PPC specific machine wide logic happens.
Signed-off-by: NAlexander Graf <agraf@suse.de>

hw/openpic.c

@@ -40,6 +40,7 @@
 #include "sysbus.h"
 #include "pci/msi.h"
 #include "qemu/bitops.h"
+#include "ppc.h"
 
 //#define DEBUG_OPENPIC
 
@@ -646,8 +647,7 @@ static inline void write_IRQreg_ivpr(OpenPICState *opp, int n_IRQ, uint32_t val)
 
 static void openpic_gcr_write(OpenPICState *opp, uint64_t val)
 {
-    CPUArchState *env;
-    int mpic_proxy = 0;
+    bool mpic_proxy = false;
 
     if (val & GCR_RESET) {
         openpic_reset(&opp->busdev.qdev);
@@ -659,11 +659,10 @@ static void openpic_gcr_write(OpenPICState *opp, uint64_t val)
 
     /* Set external proxy mode */
     if ((val & opp->mpic_mode_mask) == GCR_MODE_PROXY) {
-        mpic_proxy = 1;
-    }
-    for (env = first_cpu; env != NULL; env = env->next_cpu) {
-        env->mpic_proxy = mpic_proxy;
+        mpic_proxy = true;
     }
+
+    ppce500_set_mpic_proxy(mpic_proxy);
 }
 
 static void openpic_gbl_write(void *opaque, hwaddr addr, uint64_t val,

hw/ppc.c

@@ -428,6 +428,17 @@ void ppce500_irq_init(CPUPPCState *env)
     env->irq_inputs = (void **)qemu_allocate_irqs(&ppce500_set_irq,
                                                   cpu, PPCE500_INPUT_NB);
 }
+
+/* Enable or Disable the E500 EPR capability */
+void ppce500_set_mpic_proxy(bool enabled)
+{
+    CPUPPCState *env;
+
+    for (env = first_cpu; env != NULL; env = env->next_cpu) {
+        env->mpic_proxy = enabled;
+    }
+}
+
 /*****************************************************************************/
 /* PowerPC time base and decrementer emulation */
 

hw/ppc.h

@@ -73,6 +73,8 @@ void ppc6xx_irq_init (CPUPPCState *env);
 void ppc970_irq_init (CPUPPCState *env);
 void ppcPOWER7_irq_init (CPUPPCState *env);
 
+void ppce500_set_mpic_proxy(bool enabled);
+
 /* PPC machines for OpenBIOS */
 enum {
     ARCH_PREP = 0,