Re: [Qemu-devel] [PATCH] piix: do not reset APIC base address (0x80) on piix4_reset.

[Paolo Bonzini]

Il 18/12/2013 23:10, Laszlo Ersek ha scritto:
> 
> So, if PEI must do something after S3 resume that is independent of any
> DXE drivers, it can simply do it. The boot script is only necessary when
> the S3 resume PEI actions (in step 6) need to depend on earlier actions
> during DXE (step 3).

In SeaBIOS, PEI is really almost nothing (it's just the contents of
src/resume.c), so all the setup needs to be placed in the "boot script".

For example I suspect that using INT 13h for disk I/O does not work
after S3.

Paolo