MdePkg/ProcessorBind.h AARCH64: limit MAX_ADDRESS to 48 bits

AArch64 supports the use of more than 48 bits for physical and/or
virtual addressing, but only if the page size is set to 64 KB,
which is not supported by UEFI. So redefine MAX_ADDRESS to cover
only 48 address bits.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
Reviewed-by: Liming Gao <liming.gao@intel.com>

diff --git a/MdePkg/Include/AArch64/ProcessorBind.h b/MdePkg/Include/AArch64/ProcessorBind.h
index 968c18f915ae2762a5a645e39a3246fbb1513a1b..dad75df1c5796a458a945780c7a090830afc1e37 100644 (file)
--- a/MdePkg/Include/AArch64/ProcessorBind.h
+++ b/MdePkg/Include/AArch64/ProcessorBind.h
@@ -138,9 +138,9 @@ typedef INT64   INTN;
 #define MAX_2_BITS  0xC000000000000000ULL\r
 \r
 ///\r
 #define MAX_2_BITS  0xC000000000000000ULL\r
 \r
 ///\r

-/// Maximum legal AARCH64  address\r
+/// Maximum legal AARCH64  address (48 bits for 4 KB page size)\r

 ///\r
 ///\r

-#define MAX_ADDRESS   0xFFFFFFFFFFFFFFFFULL\r
+#define MAX_ADDRESS   0xFFFFFFFFFFFFULL\r

 \r
 ///\r
 /// Maximum legal AArch64 INTN and UINTN values.\r
 \r
 ///\r
 /// Maximum legal AArch64 INTN and UINTN values.\r