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powerpc/85xx: Enable the math emulation for the corenet64_smp_defconfig 

I got the following error on my t4240qds board.
  ntpd[2713]: unhandled signal 4 at 0fd5b448 nip 0fd5b448 lr 0fd5b424 code 30001

The root cause is that the float point instruction 'fsqrt' is used.
But this instruction is not implemented on e6500 core. Even this
does seem a gcc bug, I would like to enable the math emulation
in the kernel to workaround this kind of issue.

Signed-off-by: Kevin Hao <haokexin@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Kevin Hao 2013-07-10 09:49:52 +08:00 committed by Benjamin Herrenschmidt
parent 39cee08b28
commit 195c4940f7
1 changed files with 1 additions and 0 deletions
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arch/powerpc/configs/corenet64_smp_defconfig
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@ -27,6 +27,7 @@ CONFIG_P5040_DS=y
CONFIG_T4240_QDS=y
# CONFIG_PPC_OF_BOOT_TRAMPOLINE is not set
CONFIG_BINFMT_MISC=m
CONFIG_MATH_EMULATION=y
CONFIG_FSL_IFC=y
CONFIG_PCIEPORTBUS=y
CONFIG_PCI_MSI=y