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Re: [Qemu-devel] [PATCH 04/21] ppc/pnv: enable only one LPC bus
From: |
Cédric Le Goater |
Subject: |
Re: [Qemu-devel] [PATCH 04/21] ppc/pnv: enable only one LPC bus |
Date: |
Thu, 6 Apr 2017 14:35:57 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 |
On 04/06/2017 02:01 PM, Benjamin Herrenschmidt wrote:
> On Thu, 2017-04-06 at 13:50 +0200, Cédric Le Goater wrote:
>>
>> So, looking at hostboot, the lower level firmware, I think the
>> initial
>> patch is more in sync with it :
>>
>> https://github.com/open-power/hostboot/blob/master-p8/src/usr/devt
>> ree/bld_devtree.C#L1038
>>
>> David, can we keep it as it is ? I will change the commit log which
>> is a bit fuzzy.
>
> Note that OPAL should be happy to have multiple LPCs in the DT as long
> as one of them has the "primary" property in the node to tell it that's
> where the UART etc... are.
yes, that works also :
[ 0.024439731,5] LPC: LPC[000]: Initialized, access via XSCOM @0xb0020
[ 0.024499074,5] LPC: LPC[001]: Initialized, access via XSCOM @0xb0020
[ 0.024517962,5] LPC: LPC: Default bus on chip 0x0
but real HW (2 sockets OpenPOWER systems, garrison and firestone) does
not expose the LPC bus on the second chip, should we do so in qemu ?
Thanks,
C.
- Re: [Qemu-devel] [PATCH 03/21] ppc/pnv: Add support for POWER8+ LPC Controller, (continued)
[Qemu-devel] [PATCH 04/21] ppc/pnv: enable only one LPC bus, Cédric Le Goater, 2017/04/05
- Re: [Qemu-devel] [PATCH 04/21] ppc/pnv: enable only one LPC bus, David Gibson, 2017/04/06
- Re: [Qemu-devel] [PATCH 04/21] ppc/pnv: enable only one LPC bus, Cédric Le Goater, 2017/04/06
- Re: [Qemu-devel] [PATCH 04/21] ppc/pnv: enable only one LPC bus, Benjamin Herrenschmidt, 2017/04/06
- Re: [Qemu-devel] [PATCH 04/21] ppc/pnv: enable only one LPC bus, Cédric Le Goater, 2017/04/06
- Re: [Qemu-devel] [PATCH 04/21] ppc/pnv: enable only one LPC bus, Benjamin Herrenschmidt, 2017/04/06
- Re: [Qemu-devel] [PATCH 04/21] ppc/pnv: enable only one LPC bus,
Cédric Le Goater <=
- Re: [Qemu-devel] [PATCH 04/21] ppc/pnv: enable only one LPC bus, Benjamin Herrenschmidt, 2017/04/06
- Re: [Qemu-devel] [PATCH 04/21] ppc/pnv: enable only one LPC bus, Cédric Le Goater, 2017/04/07
- Re: [Qemu-devel] [PATCH 04/21] ppc/pnv: enable only one LPC bus, David Gibson, 2017/04/08
[Qemu-devel] [PATCH 05/21] ppc: add IPMI support, Cédric Le Goater, 2017/04/05
[Qemu-devel] [PATCH 06/21] ipmi: use a file to load SDRs, Cédric Le Goater, 2017/04/05
[Qemu-devel] [PATCH 07/21] ipmi: provide support for FRUs, Cédric Le Goater, 2017/04/05
[Qemu-devel] [PATCH 08/21] ipmi: introduce an ipmi_bmc_sdr_find() API, Cédric Le Goater, 2017/04/05