[U-Boot] [PATCH v2 07/12] x86: fsp: Call fsp_init_phase_pci() in pci_uclass_post_probe()

Simon Glass sjg at chromium.org
Sun Aug 23 23:21:35 CEST 2015


Hi Bin,

On 22 August 2015 at 03:05, Bin Meng <bmeng.cn at gmail.com> wrote:
> Hi Simon,
>
> On Sat, Aug 22, 2015 at 7:27 AM, Simon Glass <sjg at chromium.org> wrote:
>> Hi Bin,
>>
>> On 20 August 2015 at 07:40, Bin Meng <bmeng.cn at gmail.com> wrote:
>>> Per Intel FSP specification, we should call FSP notify API to
>>> inform FSP that PCI enumeration has been done so that FSP will
>>> do any necessary initialization as required by the chipset's
>>> BIOS Writer's Guide (BWG).
>>>
>>> Unfortunately we have to put this call here as with driver model,
>>> the enumeration is all done on a lazy basis as needed, so until
>>> something is touched on PCI it won't happen.
>>>
>>> Note we only call this after U-Boot is relocated and root bus has
>>> finished probing.
>>>
>>> Signed-off-by: Bin Meng <bmeng.cn at gmail.com>
>>> ---
>>>
>>> Changes in v2: None
>>>
>>>  drivers/pci/pci-uclass.c | 21 +++++++++++++++++++++
>>>  1 file changed, 21 insertions(+)
>>>
>>
>> Acked-by: Simon Glass <sjg at chromium.org>
>>
>> Please see below.
>>
>>> diff --git a/drivers/pci/pci-uclass.c b/drivers/pci/pci-uclass.c
>>> index 4160274..c90e7ac 100644
>>> --- a/drivers/pci/pci-uclass.c
>>> +++ b/drivers/pci/pci-uclass.c
>>> @@ -14,6 +14,9 @@
>>>  #include <dm/lists.h>
>>>  #include <dm/root.h>
>>>  #include <dm/device-internal.h>
>>> +#if defined(CONFIG_X86) && defined(CONFIG_HAVE_FSP)
>>
>> Do we need CONFIG_X86 here? Do you think it is better to have it to be clearer?
>
> Technically it is not needed as CONFIG_HAVE_FSP is dependent on
> CONFIG_X86 which is defined by Kconfig dependency. However I
> intentionally put it here, as I thought this is a common driver code
> for all architectures, and someone who is not familiar with x86 may
> wonder what CONFIG_HAVE_FSP is, so I put CONFIG_X86 at first to
> indicate this is x86-specific thing. What do you think?

Yes I thought that might be it. I agree.

Applied to u-boot-x86, thanks!

[snip]

Regards,
Simon


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