[PATCH 4/4] ppc/pnv: Return zero for core thread state xscom

[Joel Stanley]

Firmware now warns if booting in LPAR per core mode (PPC bit 62). So
this warning doesn't trigger report the core thread state is 0.

Signed-off-by: Joel Stanley <joel@jms.id.au>
---
 hw/ppc/pnv_core.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/hw/ppc/pnv_core.c b/hw/ppc/pnv_core.c
index 7fff2fd9e298..98356d7f6538 100644
--- a/hw/ppc/pnv_core.c
+++ b/hw/ppc/pnv_core.c
@@ -116,6 +116,8 @@ static const MemoryRegionOps pnv_core_power8_xscom_ops = {
 #define PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_HYP 0xf010d
 #define PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_OTR 0xf010a
 
+#define PNV9_XSCOM_EC_CORE_THREAD_STATE    0x10ab3
+
 static uint64_t pnv_core_power9_xscom_read(void *opaque, hwaddr addr,
                                            unsigned int width)
 {
@@ -134,6 +136,9 @@ static uint64_t pnv_core_power9_xscom_read(void *opaque, 
hwaddr addr,
     case PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_OTR:
         val = 0x0;
         break;
+    case PNV9_XSCOM_EC_CORE_THREAD_STATE:
+        val = 0;
+        break;
     default:
         qemu_log_mask(LOG_UNIMP, "Warning: reading reg=0x%" HWADDR_PRIx "\n",
                   addr);
@@ -408,6 +413,8 @@ static const MemoryRegionOps pnv_quad_power9_xscom_ops = {
  * POWER10 Quads
  */
 
+#define PNV10_XSCOM_EC_PC_PMC_CORE_THREAD_STATE 0x28412
+
 static uint64_t pnv_quad_power10_xscom_read(void *opaque, hwaddr addr,
                                             unsigned int width)
 {
@@ -415,6 +422,9 @@ static uint64_t pnv_quad_power10_xscom_read(void *opaque, 
hwaddr addr,
     uint64_t val = -1;
 
     switch (offset) {
+    case PNV10_XSCOM_EC_PC_PMC_CORE_THREAD_STATE:
+        val = 0;
+        break;
     default:
         qemu_log_mask(LOG_UNIMP, "%s: writing @0x%08x\n", __func__,
                       offset);
-- 
2.40.1