target/openrisc: Add VR2 and AVR special processor registers

Update the CPUCFG bits to arch v1.3.
Include support for AVRP for cpu "any".

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/openrisc/cpu.c

@@ -126,9 +126,13 @@ static void openrisc_any_initfn(Object *obj)
 {
     OpenRISCCPU *cpu = OPENRISC_CPU(obj);
 
-    cpu->env.vr = 0x13000000;
+    cpu->env.vr = 0x13000040;   /* Obsolete VER + UVRP for new SPRs */
+    cpu->env.vr2 = 0;           /* No version specific id */
+    cpu->env.avr = 0x01010000;  /* Architecture v1.1 */
+
     cpu->env.upr = UPR_UP | UPR_DMP | UPR_IMP | UPR_PICP | UPR_TTP | UPR_PMP;
-    cpu->env.cpucfgr = CPUCFGR_NSGF | CPUCFGR_OB32S | CPUCFGR_EVBARP;
+    cpu->env.cpucfgr = CPUCFGR_NSGF | CPUCFGR_OB32S |
+                       CPUCFGR_AVRP | CPUCFGR_EVBARP;
 
     /* 1Way, TLB_SIZE entries.  */
     cpu->env.dmmucfgr = (DMMUCFGR_NTW & (0 << 2))

target/openrisc/cpu.h

@@ -96,11 +96,12 @@ enum {
     CPUCFGR_OF32S = (1 << 7),
     CPUCFGR_OF64S = (1 << 8),
     CPUCFGR_OV64S = (1 << 9),
-    /* CPUCFGR_ND = (1 << 10), */
-    /* CPUCFGR_AVRP = (1 << 11), */
+    CPUCFGR_ND = (1 << 10),
+    CPUCFGR_AVRP = (1 << 11),
     CPUCFGR_EVBARP = (1 << 12),
-    /* CPUCFGR_ISRP = (1 << 13), */
-    /* CPUCFGR_AECSRP = (1 << 14), */
+    CPUCFGR_ISRP = (1 << 13),
+    CPUCFGR_AECSRP = (1 << 14),
+    CPUCFGR_OF64A32S = (1 << 15),
 };
 
 /* DMMU configure register */
@@ -280,6 +281,8 @@ typedef struct CPUOpenRISCState {
 
     /* Fields from here on are preserved across CPU reset. */
     uint32_t vr;              /* Version register */
+    uint32_t vr2;             /* Version register 2 */
+    uint32_t avr;             /* Architecture version register */
     uint32_t upr;             /* Unit presence register */
     uint32_t cpucfgr;         /* CPU configure register */
     uint32_t dmmucfgr;        /* DMMU configure register */

target/openrisc/sys_helper.c

@@ -210,6 +210,12 @@ target_ulong HELPER(mfspr)(CPUOpenRISCState *env, target_ulong rd,
     case TO_SPR(0, 4): /* IMMUCFGR */
         return env->immucfgr;
 
+    case TO_SPR(0, 9): /* VR2 */
+        return env->vr2;
+
+    case TO_SPR(0, 10): /* AVR */
+        return env->avr;
+
     case TO_SPR(0, 11): /* EVBAR */
         return env->evbar;