[PATCH 0/3] powerpc/fsl: PCI refactoring and QEMU paravirt platform
galak at kernel.crashing.org
Sat Jun 30 01:57:41 EST 2012
On Jun 28, 2012, at 9:36 PM, Jia Hongtao-B38951 wrote:
>> -----Original Message-----
>> From: Wood Scott-B07421
>> Sent: Friday, June 29, 2012 12:31 AM
>> To: Jia Hongtao-B38951
>> Cc: Wood Scott-B07421; galak at kernel.crashing.org; Li Yang-R58472;
>> agraf at suse.de; linuxppc-dev at lists.ozlabs.org
>> Subject: Re: [PATCH 0/3] powerpc/fsl: PCI refactoring and QEMU paravirt
>> On 06/27/2012 11:06 PM, Jia Hongtao-B38951 wrote:
>>>> -----Original Message-----
>>>> From: Wood Scott-B07421
>>>> Sent: Thursday, June 28, 2012 7:49 AM
>>>> To: galak at kernel.crashing.org
>>>> Cc: agraf at suse.de; linuxppc-dev at lists.ozlabs.org; Jia Hongtao-B38951
>>>> Subject: [PATCH 0/3] powerpc/fsl: PCI refactoring and QEMU paravirt
>>>> The QEMU stuff is related to the PCI refactoring because currently
>>>> we have a hard time selecting a primary bus under QEMU, and also
>>>> the generic qemu e500 platform wants a full list of FSL PCI
>>>> to check.
>>> It seems that not all primary bus has "isa" node like 8541 and 8555.
>> Do those boards (it's the boards that matter, not chips...) have legacy
>> ISA? If they do, and it's not in the device tree, then we should fix
>> the device tree for consistency, but also retain some sort of hack to
>> remain compatible with old device trees.
>> A board can refrain from using the new common infrastructure if it has a
>> good reason to.
> I'm not sure that MPC8541CDS (or 8555) has legacy ISA. I just checked in
> kernel and dts which implies the board has primary bus and no "isa" node.
> I will find out the facts later.
Pretty sure the boards have ISA, if you see the .dts has references to 'ISA bridge' & 'i8259' PIC.
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