[Qemu-devel] [PATCH] ppc/pnv: add dummy XSCOM registers for PRD initialization

[Cédric Le Goater]

PRD (Processor recovery diagnostics) is a service available on
OpenPower systems. The opal-prd daemon initializes the PowerPC
Processor through the XSCOM bus and then waits for hardware diagnostic
events.

Signed-off-by: Cédric Le Goater <address@hidden>
---
 hw/ppc/pnv_xscom.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/hw/ppc/pnv_xscom.c b/hw/ppc/pnv_xscom.c
index c285ef514e88..f53a6d7a9457 100644
--- a/hw/ppc/pnv_xscom.c
+++ b/hw/ppc/pnv_xscom.c
@@ -29,6 +29,12 @@
 
 #include <libfdt.h>
 
+/* PRD registers */
+#define PRD_P8_IPOLL_REG_MASK           0x01020013
+#define PRD_P8_IPOLL_REG_STATUS         0x01020014
+#define PRD_P9_IPOLL_REG_MASK           0x000F0033
+#define PRD_P9_IPOLL_REG_STATUS         0x000F0034
+
 static void xscom_complete(CPUState *cs, uint64_t hmer_bits)
 {
     /*
@@ -70,6 +76,12 @@ static uint64_t xscom_read_default(PnvChip *chip, uint32_t 
pcba)
     case 0x1010c00:     /* PIBAM FIR */
     case 0x1010c03:     /* PIBAM FIR MASK */
 
+        /* PRD registers */
+    case PRD_P8_IPOLL_REG_MASK:
+    case PRD_P8_IPOLL_REG_STATUS:
+    case PRD_P9_IPOLL_REG_MASK:
+    case PRD_P9_IPOLL_REG_STATUS:
+
         /* P9 xscom reset */
     case 0x0090018:     /* Receive status reg */
     case 0x0090012:     /* log register */
@@ -124,6 +136,12 @@ static bool xscom_write_default(PnvChip *chip, uint32_t 
pcba, uint64_t val)
     case 0x201302a:     /* CAPP stuff */
     case 0x2013801:     /* CAPP stuff */
     case 0x2013802:     /* CAPP stuff */
+
+        /* P8 PRD registers */
+    case PRD_P8_IPOLL_REG_MASK:
+    case PRD_P8_IPOLL_REG_STATUS:
+    case PRD_P9_IPOLL_REG_MASK:
+    case PRD_P9_IPOLL_REG_STATUS:
         return true;
     default:
         return false;
-- 
2.21.0