Ben,
Add my comments below.
Thanks,
Eric
From: Ben Schroeder [mailto:[email protected]]
Sent: Monday, September 24, 2012 5:53 PM
To: [email protected]
Subject: [edk2] HII development
Hii all,
I have 2 questions:
1. The uefi screen that shows up in qemu, which I got from the edk2
website, has:
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Boot Manager
Device Manager
Boot Maintenance Manager
When I develop a driver with HII support, I can view my forms and
configurations in the Device Manager.
However, when I boot from different systems, like vmware that have made their
own uefi support, the screen does not contain the Device Manager option. So it
doesn't seem I can even browse my HII forms there.
How then can I browse my forms in this situation?
[[Eric]] Where to show your HII forms is decided by the vmware UI logic.
2. I see this code in DriverSampleDxe from edk2:
Status = gBS->InstallMultipleProtocolInterfaces (
&DriverHandle,
&gEfiDevicePathProtocolGuid,
&mHiiVendorDevicePath0,
&gEfiHiiConfigAccessProtocolGuid,
&PrivateData->ConfigAccess,
NULL
);
I am wondering what the EfiDevicePathProtocol is used for?
I tried commenting out the lines for it (&gEfiDevicePathProtocolGuid &
&mHiiVendorDevicePath0)
It compiles fine and runs fine, but when I try to browse the forms (using the
device manager option from the uefi in qemu) it will freeze and not load the
forms.
Why is this Device Path Protocol needed in order for the HII forms to load?
[[Eric]] The device path is used to generate the ConfigHdr info used by Config
Access protocol, if not install the device path protocol, it failed to generate
the ConfigHdr info and the DriverSampleDxe will hang.
Thanks, Ben S.
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