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-de...@lists.01.org/thread/AT7EWPIOJ3GUPBAHIDZLR5V5ZK5S442K/
>
>
> Do you have any suggestions? Do you understand what is happening?
>
> Thank you.
>
> Best regards,
>
>
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