I guess I am confused. I don't have the files handy but I thought the
entire fv would be loaded at the top of memory. I'll post more detail
tomorrow morning.
On Feb 11, 2014 6:06 PM, "Andrew Fish" <[email protected]> wrote:
>
> On Feb 11, 2014, at 4:34 PM, John Davis <[email protected]> wrote:
>
> > Hello
> >
> > Can you use the emulator to dump memory associated with roms?
> >
>
> The “emulator” is not a VM. If you want to assume magic addresses and
> hardware exist you need to run the OVFM, as it runs in a VM.
>
> The “emulator” is an OS application where there are drivers that abstract
> POSIX/Win32 APIs as hardware devices. For example on a Mac a 64-bit
> application can not map any memory < 4G (hard to have a pointer bug you
> don’t notice porting from 32-bit).
>
> If you run a memmap command in the Shell you can generally find the ROM as
> it will have a MemMapIO type and the upper bit of the attribute will be set.
>
> Thanks,
>
> Andrew Fish
>
> PS The EFI memory map is not used to tell the OS about MMIO, it is just
> used to get virtual MMIO mapping for EFI runtime services. So at a minimum
> the variable services need an virtual mapping to make the EFI Variable
> services to work. Note there is no requirement that the EFI Variables are
> in the same device as the Firmware code, but it is a common implementation.
>
> > For instance, dmem fff3c9e8 is a region where I believe I have a rom
> mapped, but that command will crash the emulator.
> >
> > --
> > John F. Davis
> > 6 Kandes Court
> > Durham, NC 27713
> > 919-888-8358
> >
> > 独树一帜
> >
> >
> >
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