440EP FPU support missing
mporter at kernel.crashing.org
Wed Nov 9 09:30:36 EST 2005
On Tue, Nov 08, 2005 at 06:38:11PM +0100, Stefan Roese wrote:
> In the current linux version, Bamboo (440EP) won't compile anymore, because of
> missing fpu support:
> make uImage
> LD init/built-in.o
> LD .tmp_vmlinux1
> arch/ppc/kernel/head_44x.o(.text+0x868): In function `_start':
> : undefined reference to `KernelFP'
> make: *** [.tmp_vmlinux1] Error 1
> Somehow arch/ppc/kernel/fpu.S has disappeared. :-( I assume, this happened in
> the ppc/ppc64 -> powerpc merge. Any thoughts, why this file disappeared and
> how to solve this problem (just restore the original file)?
arch/powerpc/kernel/fpu.S is being used now which doesn't have KernelFP.
I don't know why the 44x fpu support wasn't using
kernel_fp_unavailable_exception() before but I must have missed that
Try this patch.
diff --git a/arch/ppc/kernel/head_booke.h b/arch/ppc/kernel/head_booke.h
index aeb349b..f3d274c 100644
@@ -358,6 +358,6 @@ label:
bne load_up_fpu; /* if from user, just load it up */ \
addi r3,r1,STACK_FRAME_OVERHEAD; \
- EXC_XFER_EE_LITE(0x800, KernelFP)
+ EXC_XFER_EE_LITE(0x800, kernel_fp_unavailable_exception)
#endif /* __HEAD_BOOKE_H__ */
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