ArmPkg/ArmLib: add support for reading the max physical address space size

[mirror_edk2.git] / ArmPkg / Include / Library / ArmLib.h

diff --git a/ArmPkg/Include/Library/ArmLib.h b/ArmPkg/Include/Library/ArmLib.h
index 19501efa991f5da6f2fbfb85271c5c74388bb99e..9a804c15fdb6f168528d7383db7688fccc01dc7d 100644 (file)
--- a/ArmPkg/Include/Library/ArmLib.h
+++ b/ArmPkg/Include/Library/ArmLib.h
@@ -26,6 +26,10 @@
  #error "Unknown chipset."\r
 #endif\r
 \r
+#define EFI_MEMORY_CACHETYPE_MASK   (EFI_MEMORY_UC | EFI_MEMORY_WC | \\r
+                                     EFI_MEMORY_WT | EFI_MEMORY_WB | \\r
+                                     EFI_MEMORY_UCE)\r
+\r
 /**\r
  * The UEFI firmware must not use the ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_* attributes.\r
  *\r
@@ -37,6 +41,14 @@ typedef enum {
   ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_UNCACHED_UNBUFFERED,\r
   ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK,\r
   ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_WRITE_BACK,\r
+\r
+  // On some platforms, memory mapped flash region is designed as not supporting\r
+  // shareable attribute, so WRITE_BACK_NONSHAREABLE is added for such special\r
+  // need.\r
+  // Do NOT use below two attributes if you are not sure.\r
+  ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK_NONSHAREABLE,\r
+  ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_WRITE_BACK_NONSHAREABLE,\r
+\r
   ARM_MEMORY_REGION_ATTRIBUTE_WRITE_THROUGH,\r
   ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_WRITE_THROUGH,\r
   ARM_MEMORY_REGION_ATTRIBUTE_DEVICE,\r
@@ -546,6 +558,12 @@ ArmReadSctlr (
   VOID\r
   );\r
 \r
+VOID\r
+EFIAPI\r
+ArmWriteSctlr (\r
+  IN  UINT32   Value\r
+  );\r
+\r
 UINTN\r
 EFIAPI\r
 ArmReadHVBar (\r
@@ -715,4 +733,10 @@ ArmWriteCntvOff (
   UINT64   Val\r
   );\r
 \r
+UINTN\r
+EFIAPI\r
+ArmGetPhysicalAddressBits (\r
+  VOID\r
+  );\r
+\r
 #endif // __ARM_LIB__\r