[meta-freescale] [oe-core][PATCH] tune-ppce500mc.inc: pass -mcpu=e500mc for ppce500mc kernel compile

[Zhenhua Luo]

The patch should be sent to oe-core maillist, ignore it. 


Best Regards,

Zhenhua

> -----Original Message-----
> From: Zhenhua Luo [mailto:zhenhua.luo at nxp.com]
> Sent: Tuesday, June 28, 2016 3:24 PM
> To: meta-freescale at yoctoproject.org
> Cc: Zhenhua Luo <zhenhua.luo at nxp.com>
> Subject: [oe-core][PATCH] tune-ppce500mc.inc: pass -mcpu=e500mc for
> ppce500mc kernel compile
> 
> Currently the -mcpu parameter is not passed to cross gcc when assembling
> kernel .S file, the implicit -mcpu option that defaults to the latest server cpu
> might casuse incorrect assembling.
> 
> A existent case is that wait instruction of ppce500mc is incorrectly assembled to
> power9 version with default -mcpu setting, accordingly kernel boot calltrace
> happend when wait instruction is executed on ppce500mc targets.
> 
> Signed-off-by: Zhenhua Luo <zhenhua.luo at nxp.com>
> ---
>  meta/conf/machine/include/tune-ppce500mc.inc | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/meta/conf/machine/include/tune-ppce500mc.inc
> b/meta/conf/machine/include/tune-ppce500mc.inc
> index a1ca9be..bc26a0f 100644
> --- a/meta/conf/machine/include/tune-ppce500mc.inc
> +++ b/meta/conf/machine/include/tune-ppce500mc.inc
> @@ -12,3 +12,6 @@ PACKAGE_EXTRA_ARCHS_tune-ppce500mc =
> "${PACKAGE_EXTRA_ARCHS_tune-powerpc} ppce50
> 
>  # glibc configure options to get e500mc specific library (for sqrt)
> GLIBC_EXTRA_OECONF += "${@bb.utils.contains('TUNE_FEATURES',
> 'ppce500mc', '-with-cpu=e500mc', '', d)}"
> +
> +# pass -mcpu=e500mc for ppce500mc kernel cross compile
> +TARGET_CC_KERNEL_ARCH = "-mcpu=e500mc"
> --
> 2.4.11