MIPS 32/64 R2 config option.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 31 insertions, 0 deletions

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 68c30288849a..749fa871e8e7 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -1055,6 +1055,21 @@ config CPU_MIPS32_R1
         select CPU_SUPPORTS_32BIT_KERNEL
         select CPU_HAS_PREFETCH
         help
+          Choose this option to build a kernel for release 2 or later of the
+          MIPS32 architecture.  Most modern embedded systems with a 32-bit
+          MIPS processor are based on a MIPS32 processor.  If you know the
+          specific type of processor in your system, choose those that one
+          otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
+          Release 2 of the MIPS32 architecture is available since several
+          years so chances are you even have a MIPS32 Release 2 processor
+          in which case you should choose CPU_MIPS32_R2 instead for better
+          performance.
+
+config CPU_MIPS32_R2
+        bool "MIPS32 Release 2"
+        select CPU_SUPPORTS_32BIT_KERNEL
+        select CPU_HAS_PREFETCH
+        help
           Choose this option to build a kernel for release 1 or later of the
           MIPS32 architecture.  Most modern embedded systems with a 32-bit
           MIPS processor are based on a MIPS32 processor.  If you know the
@@ -1072,6 +1087,22 @@ config CPU_MIPS64_R1
           MIPS processor are based on a MIPS64 processor.  If you know the
           specific type of processor in your system, choose those that one
           otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
+          Release 2 of the MIPS64 architecture is available since several
+          years so chances are you even have a MIPS64 Release 2 processor
+          in which case you should choose CPU_MIPS64_R2 instead for better
+          performance.
+
+config CPU_MIPS64_R2
+        bool "MIPS64 Release 2"
+        select CPU_SUPPORTS_32BIT_KERNEL
+        select CPU_SUPPORTS_64BIT_KERNEL
+        select CPU_HAS_PREFETCH
+        help
+          Choose this option to build a kernel for release 2 or later of the
+          MIPS64 architecture.  Many modern embedded systems with a 64-bit
+          MIPS processor are based on a MIPS64 processor.  If you know the
+          specific type of processor in your system, choose those that one
+          otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
 
 config CPU_R3000
         bool "R3000"