lkml.org 
[lkml]   [2019]   [Dec]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH] powerpc/mpc85xx: also write addr_h to spin table for 64bit boot entry
On Mon, 2019-11-25 at 23:15 +0800, yingjie_bai@126.com wrote:
> From: Bai Yingjie <byj.tea@gmail.com>
>
> CPU like P4080 has 36bit physical address, its DDR physical
> start address can be configured above 4G by LAW registers.
>
> For such systems in which their physical memory start address was
> configured higher than 4G, we need also to write addr_h into the spin
> table of the target secondary CPU, so that addr_h and addr_l together
> represent a 64bit physical address.
> Otherwise the secondary core can not get correct entry to start from.
>
> This should do no harm for normal case where addr_h is all 0.
>
> Signed-off-by: Bai Yingjie <byj.tea@gmail.com>
> ---
> arch/powerpc/platforms/85xx/smp.c | 8 ++++++++
> 1 file changed, 8 insertions(+)

Acked-by: Scott Wood <oss@buserror.net>

-Scott


\
 
 \ /
  Last update: 2019-12-20 00:56    [W:0.101 / U:1.232 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site