csm on edk2-platform

csm on edk2-platform

[tommaso.mazzoni]

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Dear all,

Dear David Woodhouse,

I'm trying to add Csm packages to my edk2-platform (based on 
devel-IntelAtomProcessorE3900 branch). I customized the repository to 
fit a custom module based on Apollo Lake CPU.

edk2 is the UDK2018 branch.

I generated Csm16.bin with David Woodhouse SeaBios 
(git://git.infradead.org/users/dwmw2/seabios.git).

Then I updated LegacyBbs.c in LegacyBiosDxe.inf because edk2-UDK2018 
version supports only Floppy and IDE HDD. I used LegacyBbs.c from 
edk2-master to scan also removable devices.

Now I can scan removable devices and Boot Manager populate the boot list 
with Legacy options, even it calls all options "Harddisk".

So I can try to boot it but the boot procedure stacks when it try to 
disconnect EFI devices (in PciShadowRoms function of LegacyPci.c). 
Function starts to disconnect from VGA, at that point boot stacks.

My dsc file contains the following includes:

    MdeModulePkg/Universal/BdsDxe/BdsDxe.inf {
         <LibraryClasses>
    !ifdef $(CSM_ENABLE)
           NULL|OvmfPkg/Csm/CsmSupportLib/CsmSupportLib.inf
    NULL|IntelFrameworkModulePkg/Library/LegacyBootManagerLib/LegacyBootManagerLib.inf
    !endif
       }
    MdeModulePkg/Application/BootManagerMenuApp/BootManagerMenuApp.inf {
         <LibraryClasses>
    DebugLib|MdePkg/Library/BaseDebugLibNull/BaseDebugLibNull.inf
         }
       MdeModulePkg/Application/UiApp/UiApp.inf {
         <LibraryClasses>
    NULL|MdeModulePkg/Library/DeviceManagerUiLib/DeviceManagerUiLib.inf
    NULL|MdeModulePkg/Library/BootManagerUiLib/BootManagerUiLib.inf
    NULL|MdeModulePkg/Library/BootMaintenanceManagerUiLib/BootMaintenanceManagerUiLib.inf
    !ifdef $(CSM_ENABLE)
    NULL|IntelFrameworkModulePkg/Library/LegacyBootManagerLib/LegacyBootManagerLib.inf
    NULL|IntelFrameworkModulePkg/Library/LegacyBootMaintUiLib/LegacyBootMaintUiLib.inf
    !endif
       }

and:

    !ifdef $(CSM_ENABLE)

    IntelFrameworkModulePkg/Csm/BiosThunk/KeyboardDxe/KeyboardDxe.inf

    IntelFrameworkModulePkg/Csm/BiosThunk/VideoDxe/VideoDxe.inf

    IntelFrameworkModulePkg/Csm/BiosThunk/BlockIoDxe/BlockIoDxe.inf

    IntelFrameworkModulePkg/Csm/BiosThunk/Snp16Dxe/Snp16Dxe.inf

    IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBiosDxe.inf

    OvmfPkg/Csm/Csm16/Csm16.inf

    !endif

I try to replicate what Laszlo suggest in 
https://ml01.01.org/hyperkitty/list/edk2-devel@lists.01.org/thread/AT7EWPIOJ3GUPBAHIDZLR5V5ZK5S442K/

Do you have any suggestions? Do you understand what is happening?

Thank you.

Best regards,


-- 
Tommaso Mazzoni
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Re: [edk2-devel] csm on edk2-platform

[Laszlo Ersek]

Hi David,

could you please look into this briefly?

Tommaso: please provide David with a more complete description of the
symptom that you see. Can you tell what line exactly in edk2 triggers
the problem?

Thanks
Laszlo

On 11/06/19 17:17, Tommaso Mazzoni wrote:
> Dear all,
> 
> Dear David Woodhouse,
> 
> I'm trying to add Csm packages to my edk2-platform (based on
> devel-IntelAtomProcessorE3900 branch). I customized the repository to
> fit a custom module based on Apollo Lake CPU.
> 
> edk2 is the UDK2018 branch.
> 
> I generated Csm16.bin with David Woodhouse SeaBios
> (git://git.infradead.org/users/dwmw2/seabios.git).
> 
> Then I updated LegacyBbs.c in LegacyBiosDxe.inf because edk2-UDK2018
> version supports only Floppy and IDE HDD. I used LegacyBbs.c from
> edk2-master to scan also removable devices.
> 
> Now I can scan removable devices and Boot Manager populate the boot list
> with Legacy options, even it calls all options "Harddisk".
> 
> So I can try to boot it but the boot procedure stacks when it try to
> disconnect EFI devices (in PciShadowRoms function of LegacyPci.c).
> Function starts to disconnect from VGA, at that point boot stacks.
> 
> My dsc file contains the following includes:
> 
>    MdeModulePkg/Universal/BdsDxe/BdsDxe.inf {
>         <LibraryClasses>
>    !ifdef $(CSM_ENABLE)
>           NULL|OvmfPkg/Csm/CsmSupportLib/CsmSupportLib.inf
>   
> NULL|IntelFrameworkModulePkg/Library/LegacyBootManagerLib/LegacyBootManagerLib.inf
> 
>    !endif
>       }
>    MdeModulePkg/Application/BootManagerMenuApp/BootManagerMenuApp.inf {
>         <LibraryClasses>
>    DebugLib|MdePkg/Library/BaseDebugLibNull/BaseDebugLibNull.inf
>         }
>       MdeModulePkg/Application/UiApp/UiApp.inf {
>         <LibraryClasses>
>    NULL|MdeModulePkg/Library/DeviceManagerUiLib/DeviceManagerUiLib.inf
>    NULL|MdeModulePkg/Library/BootManagerUiLib/BootManagerUiLib.inf
>   
> NULL|MdeModulePkg/Library/BootMaintenanceManagerUiLib/BootMaintenanceManagerUiLib.inf
> 
>    !ifdef $(CSM_ENABLE)
>   
> NULL|IntelFrameworkModulePkg/Library/LegacyBootManagerLib/LegacyBootManagerLib.inf
> 
>   
> NULL|IntelFrameworkModulePkg/Library/LegacyBootMaintUiLib/LegacyBootMaintUiLib.inf
> 
>    !endif
>       }
> 
> and:
> 
>    !ifdef $(CSM_ENABLE)
> 
>    IntelFrameworkModulePkg/Csm/BiosThunk/KeyboardDxe/KeyboardDxe.inf
> 
>    IntelFrameworkModulePkg/Csm/BiosThunk/VideoDxe/VideoDxe.inf
> 
>    IntelFrameworkModulePkg/Csm/BiosThunk/BlockIoDxe/BlockIoDxe.inf
> 
>    IntelFrameworkModulePkg/Csm/BiosThunk/Snp16Dxe/Snp16Dxe.inf
> 
>    IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBiosDxe.inf
> 
>    OvmfPkg/Csm/Csm16/Csm16.inf
> 
>    !endif
> 
> I try to replicate what Laszlo suggest in
> https://ml01.01.org/hyperkitty/list/edk2-devel@lists.01.org/thread/AT7EWPIOJ3GUPBAHIDZLR5V5ZK5S442K/
> 
> 
> Do you have any suggestions? Do you understand what is happening?
> 
> Thank you.
> 
> Best regards,
> 
>