diff options
| -rw-r--r-- | ArmPkg/Include/Library/ArmLib.h | 8 | ||||
| -rw-r--r-- | ArmPkg/Library/ArmMmuLib/AArch64/ArmMmuLibCore.c | 4 |
2 files changed, 12 insertions, 0 deletions
diff --git a/ArmPkg/Include/Library/ArmLib.h b/ArmPkg/Include/Library/ArmLib.h index 24ffe9f1aa..24e84c7a19 100644 --- a/ArmPkg/Include/Library/ArmLib.h +++ b/ArmPkg/Include/Library/ArmLib.h @@ -41,6 +41,14 @@ typedef enum { ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_UNCACHED_UNBUFFERED,
ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK,
ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_WRITE_BACK,
+
+ // On some platforms, memory mapped flash region is designed as not supporting
+ // shareable attribute, so WRITE_BACK_NONSHAREABLE is added for such special
+ // need.
+ // Do NOT use below two attributes if you are not sure.
+ ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK_NONSHAREABLE,
+ ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_WRITE_BACK_NONSHAREABLE,
+
ARM_MEMORY_REGION_ATTRIBUTE_WRITE_THROUGH,
ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_WRITE_THROUGH,
ARM_MEMORY_REGION_ATTRIBUTE_DEVICE,
diff --git a/ArmPkg/Library/ArmMmuLib/AArch64/ArmMmuLibCore.c b/ArmPkg/Library/ArmMmuLib/AArch64/ArmMmuLibCore.c index 8bd1c6fad9..4b62ecb6a4 100644 --- a/ArmPkg/Library/ArmMmuLib/AArch64/ArmMmuLibCore.c +++ b/ArmPkg/Library/ArmMmuLib/AArch64/ArmMmuLibCore.c @@ -35,6 +35,10 @@ ArmMemoryAttributeToPageAttribute ( )
{
switch (Attributes) {
+ case ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK_NONSHAREABLE:
+ case ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_WRITE_BACK_NONSHAREABLE:
+ return TT_ATTR_INDX_MEMORY_WRITE_BACK;
+
case ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK:
case ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_WRITE_BACK:
return TT_ATTR_INDX_MEMORY_WRITE_BACK | TT_SH_INNER_SHAREABLE;
|