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Re: [Qemu-devel] [PATCH] e500 ATMU register reads broken
From: |
Alexander Graf |
Subject: |
Re: [Qemu-devel] [PATCH] e500 ATMU register reads broken |
Date: |
Wed, 26 Aug 2015 11:15:41 +0200 |
User-agent: |
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:38.0) Gecko/20100101 Thunderbird/38.1.0 |
On 21.08.15 14:33, Rudolf Marek wrote:
> Hi all,
>
> Ping?
>
> Thanks
> Rudolf
>
> Dne 14.8.2015 v 13:49 Rudolf Marek napsal(a):
>> Hi all,
>>
>> I noticed that ATMU register reads on E500 are broken. Due to the
>> wrong mask,
>> some registers cannot be read and instead some other registers are
>> read. Please
>> see attached patch which fixes the problem.
Sorry for the long delay. Please CC address@hidden on the next
submission, so that more PPC people have the chance to review the patch ;).
Thanks, applied to ppc-next.
>>
>> I also noticed that if there was an intention to have 1:1 PCI/CPU
>> space mapping
>> for 0xC000_0000 for MPC8544DS without programming ATMUs - it does not
>> work,
>> unless ATMUs are programmed.
I've received a report about this on IRC as well. It works fine with
U-Boot because that writes the ATMUs, but not with direct -kernel boot.
Would you mind to follow up with a patch to the mpc8544ds machine file
that programs the ATMUs on init?
Thanks a lot!
Alex