[edk2-devel] [PATCH v2 8/8] ArmPkg: show stage2 granule support on Neoverse-N1

[Marcin Juszkiewicz]

N1 uses '0000' values which mean:

Support for 4KB granule at stage 2 is identified in the
ID_AA64MMFR0_EL1.TGran{4,16,64} field.

Signed-off-by: Marcin Juszkiewicz <marcin.juszkiewicz at linaro.org>
---
 ArmPkg/Application/ArmCpuInfo/ArmCpuInfo.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/ArmPkg/Application/ArmCpuInfo/ArmCpuInfo.c b/ArmPkg/Application/ArmCpuInfo/ArmCpuInfo.c
index caaab4ec4313..a97236f59352 100644
--- a/ArmPkg/Application/ArmCpuInfo/ArmCpuInfo.c
+++ b/ArmPkg/Application/ArmCpuInfo/ArmCpuInfo.c
@@ -1210,6 +1210,13 @@ HandleAa64Mmfr0 (
   Bits  = "43:40";
   Value = (Aa64Mmfr0 >> 40) & 0xf;
   switch (Value) {
+    case b0000:
+      if (((Aa64Mmfr0 >> 28) & 0xf) == b0000) {
+	Description = " 4KB granule supported at stage 2.";
+      } else {
+	Description = "unknown";
+      }
+      break;
     case b0001:
       Description = " 4KB granule not supported at stage 2.";
       break;
@@ -1248,6 +1255,13 @@ HandleAa64Mmfr0 (
   Bits  = "35:32";
   Value = (Aa64Mmfr0 >> 32) & 0xf;
   switch (Value) {
+    case b0000:
+      if (((Aa64Mmfr0 >> 20) & 0xf) == b0001) {
+	Description = "16KB granule supported at stage 2.";
+      } else {
+	Description = "unknown";
+      }
+      break;
     case b0001:
       Description = "16KB granule not supported at stage 2.";
       break;
@@ -1283,6 +1297,13 @@ HandleAa64Mmfr0 (
   Bits  = "39:36";
   Value = (Aa64Mmfr0 >> 36) & 0xf;
   switch (Value) {
+    case b0000:
+      if (((Aa64Mmfr0 >> 24) & 0xf) == b0000) {
+	Description = "64KB granule supported at stage 2.";
+      } else {
+	Description = "unknown";
+      }
+      break;
     case b0001:
       Description = "64KB granule not supported at stage 2.";
       break;
-- 
2.40.1



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