Re: [edk2] What Bios data is sent to the Bootloader/OS ?

2017-08-16 Thread Rafael Machado
Hi Igor Nice catch. Thanks for this idea! Rafael Machado On seg, 14 de ago de 2017 17:49 Igor Skochinsky wrote: > > Hi Rafael, > > It's certainly possible although not trivial. > One possible approach is DUET which can emulate UEFI environment on top of > the legacy BIOS. So you could have you

Re: [edk2] What Bios data is sent to the Bootloader/OS ?

2017-08-14 Thread Igor Skochinsky
Hi Rafael, It's certainly possible although not trivial. One possible approach is DUET which can emulate UEFI environment on top of the legacy BIOS. So you could have your legacy bootloader load DUET, which would in turn load and boot the UEFI-compatible OS. This page may be of use: http://www.rod

Re: [edk2] What Bios data is sent to the Bootloader/OS ?

2017-08-14 Thread Rafael Machado
Hi Andrew. Thanks a lot for the guidance!! Rafael R. Machado Em dom, 13 de ago de 2017 às 15:08, Andrew Fish escreveu: > On Aug 13, 2017, at 6:07 AM, Rafael Machado < > rafaelrodrigues.mach...@gmail.com> wrote: > > Thanks a lot Andrew and Rod. Your comments clarified a lot. > > Just onde last q

Re: [edk2] What Bios data is sent to the Bootloader/OS ?

2017-08-13 Thread Andrew Fish
> On Aug 13, 2017, at 6:07 AM, Rafael Machado > wrote: > > Thanks a lot Andrew and Rod. Your comments clarified a lot. > > Just onde last question. > In case of int15/e820 and uefi getMemoryMap. Do you know If this > information os used by the bootloaders? Yes it is, this is how the OS discov

Re: [edk2] What Bios data is sent to the Bootloader/OS ?

2017-08-13 Thread Rafael Machado
Thanks a lot Andrew and Rod. Your comments clarified a lot. Just onde last question. In case of int15/e820 and uefi getMemoryMap. Do you know If this information os used by the bootloaders? And do you know the format on these calls outputs? (For the getMemoryMap the uefi Spec os clear, but didn't

Re: [edk2] What Bios data is sent to the Bootloader/OS ?

2017-08-11 Thread Rod Smith
On Aug 11, 2017, at 6:00 AM, Rafael Machado wrote: >> >> Hi everyone >> >> I have a question that probably some guys here can help. >> The scenario I have, is that I need to create a OS image that must be able >> to boot at a UEFI system (with no csm module), and at a legacy bios system. >> My fis

Re: [edk2] What Bios data is sent to the Bootloader/OS ?

2017-08-11 Thread Andrew Fish
> On Aug 11, 2017, at 6:00 AM, Rafael Machado > wrote: > > Hi everyone > > I have a question that probably some guys here can help. > The scenario I have, is that I need to create a OS image that must be able > to boot at a UEFI system (with no csm module), and at a legacy bios system. > My fi

[edk2] What Bios data is sent to the Bootloader/OS ?

2017-08-11 Thread Rafael Machado
Hi everyone I have a question that probably some guys here can help. The scenario I have, is that I need to create a OS image that must be able to boot at a UEFI system (with no csm module), and at a legacy bios system. My fist thought is that this is not possible. The first thing I see that is d