Thanks Andrew. That makes sense.
I'm running out of time. So I may not perhaps spend any time debugging the
StartImage() problem further. Therefore, I'm trying something different now.
I'm changing my shim so that instead of doing these three steps:
1. Download bootmgfw.efi via TFTP.
2. Load it with LoadImage()
3. Start it with StartImage()
it simply trigger PXE Discover and that's all. I'm doing this because I
know that bootmgfw.efi runs okay if the client directly does a PXE discover
for it. So I'm hoping that if my shim triggers a discover it will cause
bootmgfw.efi to run as well.
I've written some code for it but am facing some difficulties. I'll ask
about that in a separate email, however.
Thanks a lot Andrew for your help so far. I know I'm a little annoying with
my frantic emails, but I'm just a under a little pressure to get this thing
working soon.
-Gurinder
On Fri, Jul 4, 2014 at 9:44 PM, Andrew Fish <af...@apple.com> wrote:
>
> On Jul 4, 2014, at 7:37 AM, Gurinder Singh <frederick.the.f...@gmail.com>
> wrote:
>
> >
> > Oh wait. Please Ignore my last email. I just found the command to load
> an application in Nt32Pkg. Type only the name of the application. "load"
> is not required.
> >
> > Now I have managed to load x86 version of boogmgfw.efi in Nt32Pkg shell.
> It seems to start okay. An exception "0xC0000096: Privileged instruction"
> occurs at the following line in CoreStartImage():
> >
> > Image->Status = Image->EntryPoint (ImageHandle,
> Image->Info.SystemTable);
> >
> > But I think that's expected because this exception is coming from inside
> the image itself and, being a bootloader, this image is calling some
> privileged instruction which SecMain.exe cannot support.
> >
> > Could this be the cause of the failure inside my shim? May be
> bootmgfw.efi needs some more privileges or something and my puny shim
> doesn't have them? Could that be a reason why StartImage() is returning
> EFI_INVALID_PARAMETER?
> >
>
> The Nt32Pkg (EmulatorPkg) run as an OS application, so it runs
> deprivileged. Real EFI runs as ring 0, so that would not be an issue.
>
> Thanks,
>
> Andrew Fish
>
> > -Gurinder
> >
> >
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> Quickly connect people, data, and systems into organized workflows
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------------------------------------------------------------------------------
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Turn processes into business applications with Bonita BPM Community Edition
Quickly connect people, data, and systems into organized workflows
Winner of BOSSIE, CODIE, OW2 and Gartner awards
http://p.sf.net/sfu/Bonitasoft
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