[U-Boot] [PATCH] MPC85xx crashes on SPE instruction (misalignment?), workaround tested to work

[Kumar Gala]

On Oct 26, 2009, at 4:03 AM, Leon Woestenberg wrote:

> Hello,
>
> my MPC85xx U-Boot crashed on the last instruction:
> openembedded/tmp/cross/ppce500v2/bin/powerpc-angstrom-linux-gnuspe- 
> objdump
> -M e500x2 -S u-boot | less
>
> int parse_stream_outer(struct in_str *inp, int flag)
> {
> effa4784:       94 21 ff 38     stwu    r1,-200(r1)
> effa4788:       7c 08 02 a6     mflr    r0
> effa478c:       42 9f 00 05     bcl-    20,4*cr7+so,effa4790
> <parse_stream_outer+0xc>
> effa4790:       7d 80 00 26     mfcr    r12
> effa4794:       13 c1 b3 21     evstdd  r30,176(r1)
>
> ...which is a  SPE instruction, although -mno-spe was used.
>
> tmp/cross/ppce500v2/bin/powerpc-angstrom-linux-gnuspe-gcc --version
> powerpc-angstrom-linux-gnuspe-gcc (GCC) 4.3.3
>
> Seems to be a known issue (since 2008-04?!)
>
> Googled some, turns out this patch/workaround works for me on  
> MPC8536DS.
>
> Signed-off-by: Leon Woestenberg <leon at sidebranch.com>

applied to 85xx

- k