[Skiboot] [PATCH] hdata: Update MPIPL support IPL parameter

[Oliver O'Halloran]

On Wed, Jan 29, 2020 at 2:55 AM Vasant Hegde
<hegdevasant at linux.vnet.ibm.com> wrote:
>
> We used bit 4 of `sys_attributes` attribute for MPIPL supported flag.
> Unfortunately we forgot to update HDAT spec. Now bit 4 is used for
> different purpose. Hence use bit 5 for MPIPL.

...

What is bit 4 and can any currently released firmware set it? If it
can then we should backport this to stable.

> Fortunately we don't have any released firmware with MPIPL supported yet.
> Hence its safe to make this change.
>
> Signed-off-by: Vasant Hegde <hegdevasant at linux.vnet.ibm.com>
> ---
>  hdata/spira.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/hdata/spira.h b/hdata/spira.h
> index 2c2872260..8744d0a59 100644
> --- a/hdata/spira.h
> +++ b/hdata/spira.h
> @@ -352,7 +352,7 @@ struct iplparams_sysparams {
>         __be32          sys_eco_mode;
>  #define SYS_ATTR_MULTIPLE_TPM PPC_BIT32(0)
>  #define SYS_ATTR_RISK_LEVEL PPC_BIT32(3)
> -#define SYS_ATTR_MPIPL_SUPPORTED PPC_BIT32(4)
> +#define SYS_ATTR_MPIPL_SUPPORTED PPC_BIT32(5)
>         __be32          sys_attributes;
>         __be32          mem_scrubbing;
>         __be16          cur_spl_value;
> --
> 2.21.0
>