MIPS: Loongson: Add CPU_LOONGSON2F_WORKAROUNDS

[mv-sheeva.git] / arch / mips / Kconfig

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 38fd1b9bda71ea9fea0d71a6e42712108bd7c6ee..7e6fd1cbd3f893ca3d50132bc6ffb0fcbc80966c 100644 (file)
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -1307,6 +1307,33 @@ config CPU_CAVIUM_OCTEON
 
 endchoice
 
+if CPU_LOONGSON2F
+config CPU_NOP_WORKAROUNDS
+       bool
+
+config CPU_JUMP_WORKAROUNDS
+       bool
+
+config CPU_LOONGSON2F_WORKAROUNDS
+       bool "Loongson 2F Workarounds"
+       default y
+       select CPU_NOP_WORKAROUNDS
+       select CPU_JUMP_WORKAROUNDS
+       help
+         Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
+         require workarounds.  Without workarounds the system may hang
+         unexpectedly.  For more information please refer to the gas
+         -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
+
+         Loongson 2F03 and later have fixed these issues and no workarounds
+         are needed.  The workarounds have no significant side effect on them
+         but may decrease the performance of the system so this option should
+         be disabled unless the kernel is intended to be run on 2F01 or 2F02
+         systems.
+
+         If unsure, please say Y.
+endif # CPU_LOONGSON2F
+
 config SYS_SUPPORTS_ZBOOT
        bool
        select HAVE_KERNEL_GZIP