Thank you for your replies.
On Tue, Jul 23, 2013 at 1:07 AM, Andrew Fish <af...@apple.com> wrote:
> There is a way to associate a hot key with an application, but no way to
> lock the boot order (other than Secure Boot).
>
> In general EFI is designed to move policy into the Platform as the
> platform, and its user most likely know best. An application can be loaded
> on a Phone, an ATM machine or a PC. The default platform policies might
> need to be different on these different systems. So EFI defers to the
> platform designer, and/or the platform owner, to make policy decisions.
>
> Thanks,
>
> Andrew Fish
>
>
> On Jul 22, 2013, at 8:20 PM, "Tian, Feng" <feng.t...@intel.com> wrote:
>
> I have no good idea on this. Let’s wait for others input.****
>
> *From:* André Dantas [mailto:andre.dan...@lsbd.ufc.br]
> *Sent:* Tuesday, July 23, 2013 02:07
> *To:* Tian, Feng
> *Cc:* Felipe Martins; edk2-devel@lists.sourceforge.net
> *Subject:* Re: [edk2] UEFI drivers dependency and ExitBootServices()
> event limitations****
> ** **
> Hi Feng, ****
> ** **
> Thank you for your reply. I believe that this solution works fine.
> However, I have a doubt. Your suggestion does not guarantee that my
> application will run always, because another callback function can modify
> BootOrder variable and remove my Boot option from it. Is there another way
> to do this without having to add a new boot option?****
>
> ** **
> On Mon, Jul 22, 2013 at 3:40 AM, Tian, Feng <feng.t...@intel.com> wrote:**
> **
> One way I can think is:****
> ****
>
> - Invokes EfiCreateEventReadyToBootEx() to register a platform
> callback function which is used to update “BootCurrent” and “BootOrder”
> variables to point to your application.****
> ****
> *From:* André Dantas [mailto:andre.dan...@lsbd.ufc.br]
> *Sent:* Saturday, July 20, 2013 02:52
> *To:* Felipe Martins
> *Cc:* edk2-devel@lists.sourceforge.net
> *Subject:* Re: [edk2] UEFI drivers dependency and ExitBootServices()
> event limitations****
> ****
> Hi everyone, ****
> ****
> Is there a way to define that an uefi application is called immediately
> before end of the boot with priority level TPL_APPLICATION?****
> ****
> Thanks,****
>
> ****
> On Thu, Jul 18, 2013 at 4:09 PM, Felipe Martins <ffm...@gmail.com> wrote:*
> ***
> Thank you so much, that's exactly what we needed! :D****
>
> ****
> 2013/7/18 Andrew Fish <af...@apple.com>****
> It is possible to use gBS->CreateEventEx() to register for an
> EFI_EVENT_GROUP_READY_TO_BOOT to know that the system is about to attempt
> to boot. This is generally used to complete tables needed for the OS
> handoff. ****
> ****
> It is possible to gBS->RegisterProtocolNotify() for
> EFI_LOADED_IMAGE_PROTOCOL to know when an image is loaded.****
> ****
> Thanks,****
> ****
> Andrew Fish****
> ****
> ****
> On Jul 18, 2013, at 11:28 AM, Felipe Martins <ffm...@gmail.com> wrote:****
> ****
>
> Hello everyone,****
>
> My team needs to implement an UEFI driver(A service driver, to be precise)
> that exports a few functions and consumes the protocols from a third-party
> UEFI driver to execute a relatively complex routine. This latter routine
> should preferably be executed after all the other UEFI images are loaded
> during the boot(I can't detail why this is so). Given these constraints,
> We've come to the following points:****
> ****
>
> - We could execute the routine in the driver entry point: however,
> there are no guarantees that the third-party driver protocol will be
> available when our driver is loaded(since it's not possible to specify
> dependencies among UEFI drivers);****
> - We could register the routine as a notification function for an *
> EVT_SIGNAL_EXIT_BOOT_SERVICES* event: this would guarantee that our
> driver is loaded after the third-party one and would address the preference
> mentioned in the previous paragraph, but it imposes the serious limitation
> of not being able to use Memory Allocation services in this routine, which
> makes it impossible to be implemented, in practice. As far as I understood
> from the specs, there are also no guarantees that the third-party driver
> will still be in memory when the routine is called.****
>
> So, here comes my doubt: is it possible to, somehow, specify a dependency
> among UEFI drivers(i.e, to guarantee that one driver is loaded before the
> other)? Also, are there any workarounds to the issues raised about using
> the *EVT_SIGNAL_EXIT_BOOT_SERVICES* event?****
> ****
>
> Thanks in advance,****
>
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> ****
> ****
>
>
>
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>
> ****
> ****
> --****
>
> <image001.jpg> <http://www.lsbd.ufc.br/>****
> *André Dantas*****
>
> Developer****
>
> GTalk: andre.dan...@lsbd.ufc.br <rodrigo.fe...@lsbd.ufc.br>****
>
> Skype: andre.hp.dantas****
>
>
> ****
> ** **
> ** **
>
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>
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*
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