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-rw-r--r--arch/powerpc/Kconfig17
1 files changed, 5 insertions, 12 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 508e3fe..1022e7b 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -298,7 +298,7 @@ config HUGETLB_PAGE_SIZE_VARIABLE
config MATH_EMULATION
bool "Math emulation"
- depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
+ depends on 4xx || 8xx || PPC_MPC832x || BOOKE
---help---
Some PowerPC chips designed for embedded applications do not have
a floating-point unit and therefore do not implement the
@@ -307,6 +307,10 @@ config MATH_EMULATION
unit, which will allow programs that use floating-point
instructions to run.
+ This is also useful to emulate missing (optional) instructions
+ such as fsqrt on cores that do have an FPU but do not implement
+ them (such as Freescale BookE).
+
config PPC_TRANSACTIONAL_MEM
bool "Transactional Memory support for POWERPC"
depends on PPC_BOOK3S_64
@@ -315,17 +319,6 @@ config PPC_TRANSACTIONAL_MEM
---help---
Support user-mode Transactional Memory on POWERPC.
-config 8XX_MINIMAL_FPEMU
- bool "Minimal math emulation for 8xx"
- depends on 8xx && !MATH_EMULATION
- help
- Older arch/ppc kernels still emulated a few floating point
- instructions such as load and store, even when full math
- emulation is disabled. Say "Y" here if you want to preserve
- this behavior.
-
- It is recommended that you build a soft-float userspace instead.
-
config IOMMU_HELPER
def_bool PPC64
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