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-rw-r--r--arch/nds32/Kconfig.cpu41
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/nds32/Kconfig.cpu b/arch/nds32/Kconfig.cpu
index b8c8984d1456..f16edf0582b4 100644
--- a/arch/nds32/Kconfig.cpu
+++ b/arch/nds32/Kconfig.cpu
@@ -7,6 +7,40 @@ config CPU_LITTLE_ENDIAN
bool "Little endian"
default y
+config FPU
+ bool "FPU support"
+ default n
+ help
+ If FPU ISA is used in user space, this configuration shall be Y to
+ enable required support in kerenl such as fpu context switch and
+ fpu exception handler.
+
+ If no FPU ISA is used in user space, say N.
+
+config LAZY_FPU
+ bool "lazy FPU support"
+ depends on FPU
+ default y
+ help
+ Say Y here to enable the lazy FPU scheme. The lazy FPU scheme can
+ enhance system performance by reducing the context switch
+ frequency of the FPU register.
+
+ For nomal case, say Y.
+
+config SUPPORT_DENORMAL_ARITHMETIC
+ bool "Denormal arithmetic support"
+ depends on FPU
+ default n
+ help
+ Say Y here to enable arithmetic of denormalized number. Enabling
+ this feature can enhance the precision for tininess number.
+ However, performance loss in float pointe calculations is
+ possibly significant due to additional FPU exception.
+
+ If the calculated tolerance for tininess number is not critical,
+ say N to prevent performance loss.
+
config HWZOL
bool "hardware zero overhead loop support"
depends on CPU_D10 || CPU_D15
@@ -143,6 +177,13 @@ config CACHE_L2
Say Y here to enable L2 cache if your SoC are integrated with L2CC.
If unsure, say N.
+config HW_PRE
+ bool "Enable hardware prefetcher"
+ default y
+ help
+ Say Y here to enable hardware prefetcher feature.
+ Only when CPU_VER.REV >= 0x09 can support.
+
menu "Memory configuration"
choice
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