MIPS 32/64 R2 config option.

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

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 68c30288849a49263d8c9258a7a666eab4e6d67e..749fa871e8e7c67b22800a94e4e044198032f231 100644 (file)
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -1054,6 +1054,21 @@ config CPU_MIPS32_R1
        bool "MIPS32 Release 1"
        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
@@ -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"