Re: [coreboot] [baytrail_FSP] question about lpss device with ACPI mode in win8

[cheng yichen]

Hi Zoran

Intel coreboot code + FSP + seabios1.91 in win8.1: All device is workable
and no yellow mark in device manager.

All lpss device is workable and no yellow mark in AMI UEFI BIOS.

coreboot4.4 + FSP+seabios1.91 in win8.1: lpss device is shown yellow mark
in device manager.

Thank you

2016-05-20 15:49 GMT+08:00 Zoran Stojsavljevic <
[e-mail]>:
> Hello Chang,
>
> Just replace these info in my latest email (regarding BYT FSP and
> Coreboot). The later use case and questions remain the same.
>
> Thank you,
> Zoran
>
> On Fri, May 20, 2016 at 9:16 AM, cheng yichen 
> wrote:
> > Hi Zoran
> >
> > Sorry for the information is not clear. The MR5 that I mean is intel
> > release coreboot source code and FSP in intel web side. In the debug
> > message I find the version is coreboot4.0.
> >
> > in my previous mail, the MR5 is included intel coreboot source code and
> > FSP package.
> >
> > Thank you
> >
> > 2016-05-17 11:36 GMT+08:00 Zoran Stojsavljevic <
> > [e-mail]>:
> > > Hello Cheng,
> > >
> > > I am afraid, I have no ideas anymore what could be wrong. But I have for
> > > you one suggestion (path to resolution, maybe).
> > >
> > > No idea what you are using. In the sense BYT-FSP (MR5) -> Coreboot ->
> > > (payload???). You either use SeaBIOS (CSM ON), or Tiano Core/EK2 (CSM OFF).
> > >
> > > I would suggest the following: since it depends what payload you use
> > > because you would like to reuse your old HDD with WIN 8.1, to make test
> > > very short (no need to install other HDD with WIN 8.1).
> > >
> > > Please, take real UEFI BIOS (for BYT-M N2807 it is Client Group 64bit
> > > A093.R42 or later), and install it on some INTEL CRB (BayleyBay or
> > > BakerSport) where you already have N2807. Then, in relations what payload
> > > you are using, you need to set CSM ON or CSM OFF, to make work/reuse your
> > > original HDD with WIN 8.1.
> > >
> > > Please, after you are able to bring your INTEL BYT-M CRB to WIN 8.1,
> > > reboot, and again enter BIOS CMOS. There, under system setup/advanced
> > > settings, you should be able to find southbridge setup, where one of the
> > > options is LPSS.
> > >
> > > Please, experiment, with settings within LPSS mode (PCI and ACPI), and,
> > > please, report here do you have the same as with BYT-FSP MR5 settings as
> > > you use "pcdlpsssioenablepcimode" to "LPSS_PCI_MODE_DISABLE" and
> > > "ENABLE/DEFAULT" (do you see the same behavior in WIN 8.1 device manager)?
> > >
> > > Thank you,
> > > Zoran
> > >
> > > On Mon, May 16, 2016 at 2:06 PM, cheng yichen 
> > > wrote:
> > > > Hi  Zoran
> > > >
> > > > Base on the version Baytrail_coreboot_MR5_Dec-21-2015(coreboot) that is
> > > > released by Intel.
> > > > In the coreboot(Intel released and defautle is acpi mode) I can install
> > > > driver and device is workable in win8.
> > > > I can see hs-uart controller in device manage and no yellow mark.
> > > >
> > > > In last coreboot source code. after I modify "pcdlpsssioenablepcimode"
> > > > to "LPSS_PCI_MODE_DISABLE". Then the lpss device will be confgured to ACPI
> > > > mode.
> > > > but the hs-uart controller and I2C controller will shown yellow mark in
> > > > win8 device manager.
> > > > Because the main controller is not workable in win8. I don't check the
> > > > sub-device device.
> > > >
> > > > 2016-05-16 17:16 GMT+08:00 Zoran Stojsavljevic <
> > > > [e-mail]>:
> > > > > Hello Cheng,
> > > > >
> > > > > Again, I'll repeat my questions:
> > > > > [1] Are you talking about BIOS, where you are enabling in LPSS ACPI
> > > > > (disabling automatically PCI) mode?
> > > > > [2] I need better explanation of your use case... Are you using BYT
> > > > > MR4, then MR5, or instead MR4 BIOS, or...?
> > > > > [3] For WIN8.1 you need to have the following:
> > > > >       For BIOS to work (and get rid off these yellow triangles with
> > > > > question marks):
> > > > >       [A] ACPI mode in BIOS: South Cluster Configuration -> LPSS & SCC
> > > > > Configuration -> LPSS LPSS & SCC
> > > > >            Devices Mode -> Select "ACPI Mode";
> > > > >       [B] The GPIO controller driver is/should be prerequisite for
> > > > > HS-UART driver. There is a document named:
> > > > >             Intel_Processor_Win8_IO_Drivers_Gold_MR1. You should ask
> > > > > for it from INTEL support. If installed
> > > > >             correctly, you should see HS-UART Controller device under
> > > > > System Devices in Device Manager. Also
> > > > >             new unknown devices should appear: ACPI\BCM2E1A and
> > > > > ACPI\BCM4752. These devices are for
> > > > >             HS-UART Sub Device Driver;
> > > > >       [C] You should compile the UART Sub Device Driver (by 1.2.1 of
> > > > > Intel Atom E3800 Win8.1 HS-UART Sub
> > > > >             Device Driver Sample Code Guide_1.0), and install after
> > > > > building them. After that you should see Ports in
> > > > >             Device Manager.
> > > > >
> > > > > Zoran
> > > > >
> > > > > On Fri, May 13, 2016 at 5:43 AM, cheng yichen 
> > > > > wrote:
> > > > > > HI all
> > > > > >
> > > > > > I try to enable Lpss device(i2c hs-uart) with ACPI mdoe.
> > > > > > i2c and hs-uart will show yellow mark in device manager with win8.1.
> > > > > > but I can't find the same issue in intel coreboot(versrion MR5).
> > > > > > Do you have any idea for the issue? Thank you