ArmPkg/ArmV7Lib: add support for reading the ID_MMFR0 system register

[mirror_edk2.git] / ArmPkg / Library / ArmLib / ArmV7 / ArmV7Support.asm

diff --git a/ArmPkg/Library/ArmLib/ArmV7/ArmV7Support.asm b/ArmPkg/Library/ArmLib/ArmV7/ArmV7Support.asm
index d6f249038a053314079d1ab8f37b78f1a5a9cde3..78a12e1629b476918ad82400517707a4f5563dfb 100644 (file)
--- a/ArmPkg/Library/ArmLib/ArmV7/ArmV7Support.asm
+++ b/ArmPkg/Library/ArmLib/ArmV7/ArmV7Support.asm
@@ -48,6 +48,7 @@
     EXPORT  ArmWriteTpidrurw\r
     EXPORT  ArmIsArchTimerImplemented\r
     EXPORT  ArmReadIdPfr1\r
+    EXPORT  ArmReadIdMmfr0\r
 \r
     AREA    ArmV7Support, CODE, READONLY\r
     PRESERVE8\r
@@ -320,4 +321,8 @@ ArmReadIdPfr1
   mrc    p15, 0, r0, c0, c1, 1     ; Read ID_PFR1 Register\r
   bx     lr\r
 \r
+ArmReadIdMmfr0\r
+  mrc    p15, 0, r0, c0, c1, 4     ; Read ID_MMFR0 Register\r
+  bx     lr\r
+\r
  END\r